Sewage Treatment Plant - Sewage Treatment Plant Manufacturer

July 19, 2022
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According to the CPCB‘s legislative regulations, numerous infrastructures such as apartments, commercial construction projects, educational institutions, townships, and area development projects that meet specified conditions must include sewage treatment plants. To ensure effective and safe operation of the machinery, the guideline regulations address factors such as STP site, STP technology to adopt, STP functioning, and STP maintenance.

Treated Sewage Standards by STP

The treated sewage by a sewage treatment plant should meet the following standards.

S. No. Parameter Required Standards
1 pH 6.5-8.5
2 BOD(5th day) <10mg/l
3 COD <50mg/l
4 Suspended Solids <10mg/l
5 Ammoniacal Nitrogen <5mg/l
6 Total Nitrogen <5mg/l
7 Fecal Coliform <100 MPN/100 ml

CPCB New Norms for Treated Sewage Standards by STP

Which are the Indian standards for sewage disposal?

Sensor installation guidelines

Sensors for monitoring sewage parameters such as BOD, COD, TSS, flow, and pH are required. The following are the CPCB’s suggested sensor types and communication protocols.

Parameter Measurement Type Sensor Type Communication protocol
pH Inline Ion Selective Glass Electrodes RS 485 Communication with Modbus
TSS Inline Turbidity to TSS correlation with
Nephelometric technique
RS 485 Communication with Modbus
BOD Inline UV-Vis Spectrophotometry
& combustion(Double beam
with entire spectrum scanning
RS 485 Communication with Modbus
COD Inline UV-Vis Spectrophotometry
& combustion(Double beam
with entire spectrum scanning
RS 485 Communication with Modbus
Flow Inline Electromagnetic Flow Measurement RS 485 Communication with Modbus

Sewage Treatment Plant Manufacturer

The Technology of STP

The approved STP technologies to go with are-

A. Activated Sludge Process(ASP) (only when above 500 KLD sewage is generated).

B. Membrane Bio Reactor(MBR)

C. Moving Bed Bio Reactor(MBBR)

You Can call or message  us any time as we one of the leading sewage treatment plant manufacturer in India having world class technology of wastewater treatment. Call now: 09605608473

Commercial RO Plant Range 50 LPH-2000 lph price 35000


July 15, 2022
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Have you ever taken the concern of treating Sewage water and using it for various purposes such as in agriculture and industries? We are pretty sure you must have. With a lot of technological advancements in the era, this doesn’t surprise that the water that earlier wasn’t considered to be of any use can now be considered for alternative purposes.

Do you know what it indicates? It is a clear cut indication of our planet’s people becoming environmentally conscious. Instead of using fresh water in agriculture and industries, they use treated Sewage water, hence saving the highest percentage of fresh water for drinking purposes.

But what if we tell you that treated Sewage water can also be used for drinking? Yes, you heard it right! Treated Sewage water after recycling can be used for drinking purposes. Most people consider the treated Sewage water cleaner than the available drinking water.

Before we move forward, you need to know about the cleaning process of Sewage water. Let us understand:

  • The first and the foremost thing that you should understand is that it is possible to clean the Sewage water. The water so treated can be used not only for agricultural or industrial purposes but also for drinking purposes.
  • Depending on the purpose, there are different degrees of purification. For example, if the goal is agriculture and industrial, then the first degree of treatment will suffice, and if the purpose is drinking, then the second degree of treatment must be given.
  • In the first degree, the water will be converted into reclaimed water and used for the purposes mentioned above. But the reclaimed water will not be suitable for drinking purposes. It has to undergo second-degree treatment. In this step, the water will be termed recycled water, and it is highly qualified for drinking purposes.

Having understood the essential points, let us look briefly at the working of a Sewage treatment plant. The Sewage treatment plant works usually works in three stages:

  • Primary stage: In this stage, the large-sized solid particles are removed from the liquid solution. Primary stage mainly focuses on removing the big-sized particles so that it does not damage the filters in next phase.
  • Secondary stage: Secondary stage usually focuses on removing the organic wastes such as bacteria, viruses etc. The microorganisms at this stage are given the primary importance for removal because they consume sludge within the Wastewater. At this stage, the water is made free from contaminants. This water becomes reclaimed water and hence is suitable for agriculture and industrial purposes.
  • Tertiary stage: At this stage, the water is almost clean. But it contains micro contaminants that are generally toxic and hazardous. So, the primary purpose of tertiary treatment remains is to purify the suitable water for drinking. In other words, it converts the reclaimed water into recycled water. The instruments used in this process are UV-based purification and clinical treatment.

So, we hope that you are now clear whether Sewage water is fit for drinking or not. It is suitable for drinking if properly treated but unfit if it’s directly discharged from factories untreated.

If you are looking for the best Sewage treatment plant manufacturer, then you are at the right place. At Netsol, we provide the best professional services and ensure that you do not face problems when using a Sewage treatment plant.

Netsol  Water is the leading and top-most manufacturer in the STP plant. We help our customers fulfill their aim of treating Wastewater. Being environmentally conscious, we incorporate the latest technology that conforms to the predefined industrial standards and quality.

Therefore you don’t have to worry about the quality and services. We are one of the most cost-effective companies committed to preserve water and serve you the best. We deal in the best Sewage Treatment plants but are not limited to them only.

Contact us to discuss your requirements. We can be reached at 9650608473, or feel free to leave your query at enquiry@netsolwater.com.

We would be happy to assist you!


July 6, 2022
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What is sewage treatment plant?

Sewage Treatment Plant (STP Plant) is a combination of machines, biologicals and chemicals. Which is used to treat human waste and wastewater waste generated from residential, institutional, commercial and industrial establishments. A sewage treatment plant operates by circulating air to encourage the growth of bacteria to break down sewage. The goal is to deliver much cleaner, more environmentally friendly effluent. It involves a similar process to a typical septic tank but has some key differences.

What Are The Stages of Sewage Treatment?

The general construction of a sewage treatment manufacturer doesn’t differ too drastically from that of a septic tank. Just as with a septic tank, sewage flows from the property being serviced into the first chamber of the sewage treatment factory. Then, the water sits until grease, oil painting and proletariat have floated to the top and solids have settled on the bottom of the tank.
Once the process of separation has taken place, the liquid peregrination into a alternate chamber which is where sewage treatment shops differ from septic tanks. This chamber is fitted with an air pump that circulates air around the chamber to encourage the growth of aerobic bacteria. This bacteria helps to break down the pollutants in the water, effectively drawing it.

The final stage of a sewage treatment plant is one last agreement tank. This final tank allows the veritably last solids that may remain to Gomorrah to the bottom of the tank before the effluent is discharged into a soakaway or watercourse.
Once the treatment process has been completed and the wastewater has been treated as completely as possible, it can be discharged into the terrain. This is another crucial area where sewage treatment shops differ from sewage treatment shops. Whereas you must discharge effluent from a septic tank into a soakaway for farther treatment in the ground, subject to an Environment Agency Consent to Discharge, you can discharge your effluent into original water sources straight from your treatment factory. This is because of the extensively bettered effluent quality that the treatment process produces.

Why Are Sewage Treatment plants needed?

The first study for anyone planning a new development should be getting connected to mains seamsters. They’re generally the most cost-effective and dependable system of dealing with your wastewater. still, getting a mains semester connection is n’t always possible. In some scripts, the distance from the nearest seamster or the layout of the land can make it insolvable to have your property serviced by a mains seamster. That’s where sewage treatment plants and other druthers come by. The operation of a sewage treatment factory means that you can have one installed nearly anywhere, as long as you have an electrical connection.

Do Sewage Treatment Plant Still Need evacuating?

The purpose of a sewage treatment plants is to treat the wastewater as completely as virtually possible – and, indeed though similar shops can frequently deal with further waste than a septic tank, they will still need evacuating from time to time. Over time, sludge can also make up in the system, so it’s important that a treatment factory is regularly maintained at least formerly a time or as you’re advised by the installer.

Advantages of a Sewage Treatment plant

  1. Reliable and doubtful to encounter problems with only regular conservation
  2. Can be installed indeed on grueling or compact spots
  3. Cost-effective over time, with only installation, power and conservation to pay for.

Sewage Treatment Plant Manufacturer - 9650608473

Disadvantages of a Sewage Treatment Plants

  1. The factory needs a constant force of electricity to run
  2. Will bear professional conservation annually, and in the doubtful event of problems
  3. Design and installation of the system needs to be accepted professionally
    As you can see, the biggest disadvantage of having a sewage treatment plant is that you’re counting heavily on conservation from a professional company. This means that you ’ll have to stay for any problems, still doubtful they are, to be resolved, and also makes choosing the supplier of the service absolutely pivotal.

Then at Netsol Water, we’re not only ready and staying to take your call and bandy your options and queries, but we ’re also devoted to icing that your sewage treatment is dependable at all times. To learn further about the installation or conservation of a sewage treatment system on your point, give us a call moment on +919650608473
We’re adviser of water & wastewater treatment factory. We can suggest you the stylish technologies for treatment of wastewater to meet parameters that are set by State Pollution Control Board( SPCB) or public position authority like Central Pollution Control Board( CPCB) of India. With ever adding volumes of waste, its treatment and disposal is of penultimate significance. The most elegant result to this extremity is sewage treatment factory. Kelvin not only excels in manufacturing, but it also provides the most effective consultancy which solves customer’s problem in utmost elegant way. Gone are the days of the age-old system of septic tanks and soak recesses, with Kelvin, find the new age results.

STP installed by us in various Industries

bettery_manufacturing Battery Manufacturing
institution_hospitals Institutions & Hospitals
iron_steel Iron & Steel Industries
electric_power Electric Power Plants
organic_chemical Organic Chemical Manufacturing
nuclear_industry Nuclear Industry
mines_quarries Mines & Quarries
petroleum Petroleum Refining & Petrochemicals
pulp_image Pulp & Paper Industry
textile_image Textile Dyeing

Parameters Set by Pollution Control Board before Discharging Effluent

After treatment of wastewater, before discharging it must meet all the parameters. The prescribed limit or acceptable level of concentration of impurities or pollutants is laid down by the local authorities such as municipality or State Pollution Control Board (SPCB) or Central Pollution Control Board of India. The final discharge of wastewater will normally be either into the body of water or onto the land. The receiving bodies of water may be streams, lakes, ponds, canal, rivers, seas, estuaries, etc.

Ministry of Environment & Forest Recommendations

SN Parameters Effluent
1 Ph 5.5-9.0
2 BOD ≤ 20 mg/l
3 COD ≤ 250 mg/l
4 Oil & Grease ≤ 5 mg/l
5 Total Suspended Solids ≤ 30 mg/l
6 Nitrogen ≤ 5 mg/l
7 Ammonia Nitrogen ≤ 50 mg/l
8 Phosphorous ≤ 5 mg/l
9 Total Coliform 1000 no./100 ml

Services in Sewage Treatment Plant

With the help of highly skilled professionals Netsol, delivers highly efficient sewage treatment plants services, thus ensuring ultimate customer satisfaction. The firm specializes in providing planned services and timely maintenance which are delivered at affordable cost.

We provide a range of services, which include: Consultancy, Plant designing, commissioning, installation and maintenance. All this is done by leveraging latest tools and techniques of the field. Write Us: info@netsolwater.com.


June 29, 2022
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Basically, a sewage treatment plant operates by circulating air to encourage the growth of bacteria to break down sewage. The thing is to deliver important cleanser, more environmentally friendly effluent. It involves a analogous process to a typical septic tank but has some crucial differences. Sewage treatment plants, depending on their size, can treat the waste of marketable properties or a number of domestic residences.

What Are The Stages of Sewage Treatment?

The general stages of sewage treatment plant doesn’t differ too drastically from that of a septic tank. Just as with a septic tank, sewage flows from the property being serviced into the first chamber of the sewage treatment plant. Then, the water sits until grease, oil painting and proletariat have floated to the top and solids have settled on the bottom of the tank.

Once the process of separation has taken place, the liquid peregrination into a alternate chamber which is where sewage treatment plants differ from septic tanks. This chamber is fitted with an air pump that circulates air around the chamber to encourage the growth of aerobic bacteria. This bacteria helps to break down the pollutants in the water, effectively drawing it.
The final stage of a sewage treatment plant is one last agreement tank. This final tank allows the veritably last solids that may remain to Gomorrah to the bottom of the tank before the effluent is discharged into a soakaway or watercourse.
Once the treatment process has been completed and the wastewater has been treated as completely as possible, it can be discharged into the terrain. This is another crucial area where sewage treatment plants differ from sewage treatment plants. Whereas you must discharge effluent from a septic tank into a soakaway for farther treatment in the ground, subject to an Environment Agency Consent to Discharge, you can discharge your effluent into original water sources straight from your treatment plant. This is because of the extensively bettered effluent quality that the treatment process produces.

Why Are Sewage Treatment Plants Required?

The first study for anyone planning a new development should be getting connected to mains seamsters. They’re generally the most cost-effective and dependable system of dealing with your wastewater. still, getting a mains semester connection isn’t always possible. In some scripts, the distance from the nearest seamster or the layout of the land can make it insolvable to have your property serviced by a mains seamster. That’s where sewage treatment plants and other druthers come by. The operation of a sewage treatment plant means that you can have one installed nearly anywhere, as long as you have an electrical connection.

Do Sewage Treatment Plants Still Need Emptying?

The purpose of a sewage treatment plant is to treat the wastewater as completely as virtually possible – and, indeed though similar plants can frequently deal with further waste than a septic tank, they will still need evacuating from time to time. Over time, sludge can also make up in the system, so it’s important that a treatment plant is regularly maintained at least formerly a time or as you’re advised by the installer.

Advantages of a Sewage Treatment Plants

  • Reliable and unlikely to encounter problems with only regular maintenance
  • Can be installed even on challenging or compact sites
  • Cost-effective over time, with only installation, power and maintenance to pay for

Disadvantages of a Sewage Treatment Plants

  • The plant needs a constant supply of electricity to run
  • Will require professional maintenance annually, and in the unlikely event of problems
  • Design and installation of the system needs to be undertaken professionally

As you can see, the biggest disadvantage of having a sewage treatment plant is that you’re counting heavily on conservation from a professional company. This means that you ’ll have to stay for any problems, still doubtful they are, to be resolved, and also makes choosing the supplier of the service absolutely pivotal.

Then at Netsol Water, we ’re not only ready and staying to take your call and discuss your options and queries, but we ’re also devoted to ensuring that your sewage treatment is dependable at all times. To learn further about the installation or conservation of a sewage treatment system on your site, give us a call today on +91-9650608473.


June 24, 2022
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We are going to discuss some of the generally used sewage treatment plants in India. Every group or community produces liquid and solid waste. The water supplied becomes polluted after being used by colorful druggies. These druggies or the so- called sewage source could be institutes, diligence, domestic areas, marketable establishments, etc. undressed wastewater mustn’t be accumulated. They correspond of numerous perished mothers. It consists of putrefying organic matter.

However, they can produce an enormous quantum of foul- smelling feasts that can be dangerous to the terrain, If we keep these accoutrements for a while. also, it can also contain other poisonous composites that may be dangerous if expose to the terrain for a long time. thus, it’s essential to remove and clean the wastewater from its source.

Water is veritably precious; numerous people around the world aren’t getting enough water. So, due to the failure of water, exercise is an excellent option.

SOME TYPES OF SEWAGE TREATMENT Plants

There are different types of sewage treatment plants in India. The significant difference in them is the process or the way they treat the wastewater

  1. Rotating Slice System
    It’s a natural treatment process for treating wastewater after primary treatment. They remove grains and other solids through a webbing process followed by a settling period. The RBC system involves allowing wastewater to come into contact with a natural medium. We do this in order to exclude pollutants in wastewater before the discharge of treated wastewater into the terrain. It consists of a series of nearly spaced, resembling discs mounted on a rotating shaft, supported just above the wastewater face.
  2. Actuated Sludge Factory( ASF)
    This is a traditional sanitarium wastewater treatment procedure. We treat wastewater in an open tank( aeration tank) in this process. We supply air either by a fixed/ floating face aerator or by an air cracker
    to give oxygen to the aerobic microbes. roughly 12- 15 hours of hydraulic retention time is there for the treatment of wastewater. Microorganisms use oxygen in the air to convert organic matter into stabilized, low- energy composites similar as NO3, SO4, and CO3. also, they also synthesize new bacterial cells.
  3. Suspended Media Pollutants( SMF)
    These are designed to prize suspended solids from water and fluid systems. We separate these solids to a position of 5 microns using advanced endless media. When we withdraw these solids, the pressure drop through the media increases. The machine automatically-washes to tone-clean the media on the base of pressure drop or time. The SMF uses four layers of sludge media. These include crushed limestone, determinedness, anthracite, and refractory beach, which have advanced inflow rates and longer service life. These are descent- mounted in order to reduce conservation and space conditions. Some exemplifications of SMF are Allerton Drainage, Valance VES 1- 4, Clearwater Filter clear, Titan, Entec, Klargester Biotec( and Tailwind), Biodigester(pre-1997).
  4. Submerged Aerated Sludge( SAF)
    The submerged aerated sludge ( SAF) has a seal tank to explain the solids that are to get relieve out of the sludge rather of using backwashing. The factory has a depth of 1- 4 m of sludge media on which to grow biomass. The cracker
    sends air to the bottom of the bed to give the biomass with oxygen to grease the oxidation process. The air sluice encourages the acceptable mixing of the effluent and the disturbance of any residual solids from the sludge medium. There are numerous SAF variants, and some are the combination system, the circle reactor system, the compartmentalized system,etc.
  5. NON-ELECTRIC Sludge
    Non-electric water cleansers are generally compact, making them a perfect choice when you need to travel regularly. In addition to power and cost considerations, these water cleansers are veritably easy to maintain. They’re veritably easy to install. However, which substantially have low situations of TDS, also these types of water cleansers are useful, If you get water from sources like external water force. They’re ideal in circumstances where there’s a deficit of energy or where you don’t want to use a lot of electricity. When you have filled the water in anon-electric water cleaner, it goes through these filtration stages on its own as a result of graveness. And, hence stores the clean water in the bottom of the water cleaner.
  6. TRICKLING Sludge
    A trickling sludge also called as the trickling biofilter, biofilter, natural sludge, and natural trickling sludge. It’s a fixed- bed, natural reactor operating under( substantially) aerobic conditions. Pre-installed wastewater is continuously tricked or scattered over the filter. However, the biofilm covering the sludge material degrades organic matter aerobically, If the water moves through the pores of the sludge. The benefit of all these styles is that they’re featherlight and that they exclude organic matter effectively. still, they’re high- tech and generally need professional construction and functional workers. Trickling pollutants are secondary treatment to the primary setting phase.
  7. SEQUENCING BATCH REACTOR( SBR)
    Sequencing batch reactors STP ( SBRs) or successional batch reactors are marketable wastewater treatment budgets. SBR reactors process wastewater, similar as sewage or anaerobic digester affair, or batch mechanical natural treatment shops. Oxygen is will be washing from wastewater to minimize biochemical oxygen demand( duck) and the demand for chemical oxygen( COD). It’s to make it suitable for discharge into semesters or for use on land. Although there are multiple SBR configurations, the primary medium is identical. Treatment consists of a five- stage cycle fill, reply, settle, draw and goof . SBRs are ideal for lower overflows since we get the size of each tank by the quantum of wastewater that gets to collect in the other tank during the treatment process.
  8. MOVING BED BIOFILM REACTOR( MBBR)
    With the Moving Bed Bioreactor STP ( MBBR), an provident option for wastewater treatment. It’s a good option only if the bulk of the impurity cargo has to get relieve of or if the applicable discharge regulations aren’t strict. The MBBR system consists of an actuated sludge aeration system, where the sludge is attained from recycled plastic carriers. These carriers have a large internal face for optimum commerce with water, air, and bacteria. For a number of different operations, the MBBR process may for producing the asked results. We achieve this on the base of the thickness of the wastewater and the discharge legislation.
  9. MEMBRANE BIOREACTOR( MBR)
    Membrane Bioreactor (MBR) is generally to describe wastewater treatment processes where a perm- picky membrane is combined with a natural process, specifically a suspended growth bioreactor. We consider MBR system to be a complete and completely integrating membrane unit with specific factors needed to enable the process to operate as asked . The advantages of MBR include a reduced footmark, generally 30- 50 percent lower than the similar traditional active sludge installation with secondary interpretations and tertiary media filtration.Conclusion

Sewage treatment plants in India have gained enormous fissionability. We all know the significance of pollution control and the saving of water. But, now technology has grown up, and numerous new ways came up to break this problem. Water recycling processes not only help to exercise water but also to keep the ecosystem safe and balanced. moment, we’ve a range of means and means to fix these problems. Water treatment processes not only help to conserve the water but also to keep the ecosystem safe and healthy. We at Netsol Water are having such a platoon of experts that can design one for your conditions and we’re confident to meet and over pass your demands. We’re delivering the same with new technology and quality that you can bear upon.

Do you have any queries regarding sewage treatment plants in India (STP Plant) or about the composition? also contact or email us. We’re happy to hear from you. Please browse our website to find further about us and our services. However, also please do check out our further blogs.


June 24, 2022
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From design to delivery of Sewage Treatment Plant components to a site, through assembly, construction and then testing, start-up, operator training and final testing until all systems are “go”, is a rigorous engineering process that must be completed faithfully through to the end of proof of performance testing.

This is called “commissioning” – bringing something has been newly made into working order. The whole design, construction, installation, commissioning, start-up and testing process can take 5-6 months or even longer depending on the complexity of the treatment plant, but having it done properly is essential for the reliable future operation of a plant.

A plant that is well designed, built, commissioned and well-maintained can be expected to give 25+ years good, reliable service. At a cost that can be many millions for even a small plant serving a community of only a few hundred people, this is a significant infrastructure investment and one worth protecting. Not getting it right can halve the lifetime of a treatment plant.

If you divide the up-front investment by cost per year of ownership, it is very easy to see the business case for protecting that investment. 

The provision of good, clean water and well managed water, wastewater and sewage treatment services to even the most remote community location is an essential requirement for basic quality of life. Getting it that way isn’t a simple process!

A project team is usually involved in the commissioning of a plant. This includes construction firms, process design engineers, water and wastewater specialists, OEM equipment suppliers and their representatives.

Breaking down the commissioning project – what steps are involved?

This commissioning process is responsible for the integrated application of a set of engineering techniques and procedures to check, inspect and test every component of a water treatment plant.

Everything is checked from the functionality of individual instruments to whole systems, covering all activities from construction, assembly, processes to the final handover of a plant to a fully trained or qualified operations team.

Factory Acceptance Testing (FAT)

The process begins with checking that all equipment shipped from the factory is working as expected and no damage has occurred enroute, and that all the mechanical equipment together is a working system.

Site Acceptance Testing (SAT)

Then comes wet testing: pipe flushing, leak and pressure testing, rotational testing of shafts and bearings, airflows, heating and cooling functions, extensive electrical testing, etc. Extensive testing is carried out on every component, and then, the whole system.

Once successfully commissioned, the plant can be turned ‘live’ and receive sewage. When this occurs, great care needs to be taken as it is a finely tuned process. 

Settings need to be optimized to support biomass or sludge growth, which will need to be adapted over the start-up process as the population grows.

If you’re near a town you might be able to seed the process from donor sludge taken from an operational plant. If not, you need to grow your own biomass, which is a process that can take several weeks and needs careful attention. If you don’t get the plant started right, future operations will be difficult at best, with the potential for the plant to fail.

Proof of performance testing (PoPT)

Proof of performance testing involves rigorous testing for the new treatment plant and is conducted after everyone is confident that the plant is operating well and is hitting it’s targets. This can be anywhere from a 2 week test, with tests every day, to 4 weeks with test every few days, to 12 weeks or even longer. It all depends on the client but 2-4 weeks is a typical timeframe.

Start-up and PoPT also provide opportunity for the commissioning engineer to help train up the local operators, through a transfer of knowledge and skills that will be invaluable in future operation of the plant.

While rigorous commissioning and testing sets the plant up to excel, good operators are needed to keep it going. 

The whole job from design to commissioning a new plant can take 18-24 months, depending on the complexity of the plant. Whilst good design and planning and the ability to carry out rigorous processes to the letter is critical, all this needs to be balanced with weather, equipment reliability, internal politics and skills, and the location of the plant.

Challenges for remote locations

Remote plants, like those located on remote islands can suffer delays due to shipping, simple logistics errors or even just poor timing on deliveries. The time it can take to bring new equipment in the case of failure, or extra assistance in the case of natural events that might occur during the commissioning process can be significant, and good planning will help minimize the impact of any issues that may be faced.

The importance of a good commissioning plan

A detailed commissioning plan should be created to methodically check every piece of equipment, instrument, control and interlock. Knowing you have the right plan, and following it, significantly reduces the potential of future problems, because you can be confident that your equipment works the way it is supposed to work (i.e. as per the Functional Description).

A recent case study

Most recently, Simmonds & Bristow delivered design, commissioning, and proof of performance testing for a new $9m sewage treatment plant manufacturer to a remote tropical community of 300-400 people.

The plant “went live” in November 2021 and the team are currently finishing proof of performance testing after several months of tuning, commissioning, optimization and testing. While good planning and commissioning have helped make the process reasonably painless, heavy rain posed a challenge to the project. The treatment plant coped well due to the fact that it had been well designed and constructed.

The plant has been designed for 400 people, or a flow of about 137,000 L/day, year-round. Flows varied at start up and were quite high initially, although much of the extra flow appears to have been caused by seawater ingress through pump-station over-flows. These were repaired by the local council operators, which helped significantly with excess flow. Flows, without rain, have generally stabilized at around 100,000 L/day, providing some capacity for growth in the community.

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(Image: Design, troubleshooting and maintenance of remote area water and wastewater treatment plants is Simmonds & Bristow’s specialty).

The new plant replaced the previous treatment plant which had started to fail earlier than expected due to poor operational management over its lifetime. In a remote area like this it is hard to maintain continuity of skill and experience in the operating staff, who tend to come and go. A plant like this could last 25 years or more if the equipment is maintained correctly throughout its life. However without continuity of good operations, the lifespan of a plant can be as short as 10 years (or however long it takes a bearing to seize). Engaging a turnkey operations and maintenance arrangement with water management professionals would have gone a long way to assist in extending the usefulness of the plant.

The importance of live startup

Many OEMs (whose primary concern is equipment function) can install a plant like this, turn it on and walk away. Sadly, commissioning is not always done properly, or if commissioning is done correctly, often start-up (biological testing and optimization) is not. Plants may simply be turned on to their full capacity without consideration of how the biomass should be ramped up or grown. This specialized knowledge is not always part of an OEM’s skillset.

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Biological commissioning, start-up and operator training are where Simmonds & Bristow can really add value. We can act as a subcontractor to an OEM, or a representative of the client themselves – not just in ensuring the commissioning and proof of performance testing is done properly (including biological testing) but in offering maintenance oversight, support and continuity of operations intelligence through the life of a plant.

This will ensure the life of the plant can better reflect the (usually) very high initial investment.  

Published by

Terrence Allen
Process Engineer at Simmonds & Bristow

June 14, 2021
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Sewage Treatment Plant

Sewage Treatment Plant is a machinery process to treat the waste and wastewater generated from households, offices, restaurants, hotels, factories, municipals corporations, and so on. In other words Sewage treatment plants are generally used for the treatment of wastewater in order that they are often made fit use within the fulfillment of other purposes, even the wastewater beginning of varied manufacturing and supplying units isn’t fit to be released within the environment or within the water bodies.

What are the types of sewage treatment plant?

The major question is that what are the types of sewage treatment plants? STP Plant is differentiated by the process by which they treat the wastewater. So we can state the following Types of Sewage Treatment Plant

  • Suspended Media Filters (SMF)
  • Activated sludge plant (ASP)
  • Rotating disc system.
  • Submerged aerated filter (SAF)
  • Sequencing batch reactor (SBR)
  • Non-electric filter.
  • Trickling filter.

Activated sludge plant (ASP)

ASP systems usually need servicing on a six-monthly basis, counting on the manufacturer and population equivalent size. The Vortex plant is officially classed as a complicated ASP (AASP) because it features a sludge return mechanism incorporated into the planning. In each case, these plants require maintenance by a suitably qualified engineer. we have an outsized understanding and knowledge of those sorts of sewage treatment plants as we’ve maintained such wastewater systems for our customers for several, a few years. Certain parts and fittings (depending on the manufacturer) on these plants can break over time either through stress or mechanical fatigue. so as for ASP’s to function properly, maintenance is important.

Rotating disc system

Rotating Disc Systems (Rotating Biological Contactors – RBC’s) include:

Klargester Biodisc
Tuke and Bell
Clearwater Rotoclear
Depending on size and manufacturer’s specifications, RDC systems require servicing on either a twelve-monthly, six-monthly, or quarterly basis. The Clearwater Rotoclear is not any longer in production. Regular maintenance by a suitably qualified engineer is important to make sure the interior moving and mechanical parts are kept in good, working condition. we’ve much experience in servicing these sorts of sewage treatment plants, however, we only maintain these quiet plants as long as they’re within a 35-mile radius of our offices. this is often because any emergencies which will arise with these plants got to be addressed immediately. due to their heavy reliance on the interior moving parts, maintenance on these particular plants is important.

Suspended Media Filters (SMF)

Examples of Suspended Media Filters (SMF’s) include:

Allerton Drainage
Valance VES 1-4
Clearwater Filter clear
Titan
Entec
Klargester Biotec (and Airflow)
Biodigester (pre-1997)

Submerged aerated filter

SAF systems require servicing on either a twelve-monthly, six-monthly, or quarterly basis counting on size and manufacturer’s specifications. There are many SAF plants that are not any longer in production; if you’ve got an obsolete SAF plant, please call us as we still maintain many SAF plants that are not any longer produced. Again, regular maintenance is extremely important so as to take care of optimum efficiency, suit the terms of your Permit to Discharge and avoid your plant from becoming an environmental pollution hazard. Moreover, there are many parts that are perishable (depending on the make and model) on SAF units that need replacing; renewing these parts is important so as to stay these plants operating properly. we have an excellent deal of experience servicing this type of sewage treatment plant and currently, maintain SAF’s produced by an outsized number of various manufacturers.

Examples of Submerged Aerated Filters (SAF’s) include:

Conder SAF
Valance VES 5 and above
Falcon
Jewel
Acorn
Clearwater Aeroclear
Travel
Marsh Ensign
Matrix


Greater Noida

Headquarters

We are the leading Sewage Treatment Plant (STP) Manufacturer & Supplier, in the Delhi-Noida, India.
+ 91-9650608473

www.netsolwater.com

info@sewagetreatmentpalnts.in

LOCATIONS

We Are Everywhere in India & Overseas.




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