Sewage Treatment Plant

June 14, 2021

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
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
Clearwater Aeroclear
Marsh Ensign

May 13, 2021

Are you or your organization is planning for STP Plant, and stuck with the best technology of sewage treatment plant. No worries!! You are in right place, in this article we are going to discuss the best technology of STP its advantages, and every minor to major information that you want to know before buying a Wastewater treatment plant.

In recent times there is a number of new waste and wastewater treatment technology that have come into practice. The following are some better known and best Sewage Treatment Plant Technology

  1. Membrane Bio-Reactor (MBR)

MBR is the best technology of STP, wherein water treated by biological process. After the biological process treated water passed through Membrane Bio-Reactor Module.


Advantages of Membrane Bio-Reactor

  • High-quality effluent for reuse without separate nutrient removal and fine filtration
  • A compact system reduces plant footprint by 25-40% compared to a conventional STP.
  • These membranes are stated to be durable to ensure reliability and long membrane life, and low membrane replacement frequency.
  • The modular system is expandable
  • Higher stability to organic shocks /upsets due to higher MLSS concentration.
  • The process operates under low suction, the ideal filtration method for small to large-scale membrane facilities, hence low power consumption.
  • An automated system makes the process operations easier to operate.

Disadvantages of Membrane Bio-Reactor

  •  Each vendor advocates his own criteria for the membranes and their types which makes it difficult to bring about common and validated design criteria.
  • It is not possible to cannibalize the system between different manufacturers.
  • High reliance on energy input in the absence of biomethanation.
  • Patented process technology and decanters defying local cannibalization.
  •  Detailed evaluation of existing plants required either by IITs, CPCB, or NEERI.
  1. Moving Bed Bio Reactor (MBBR) / Fluidized Aerobic Bioreactor (FAB)


MBBR can also be considered as the optimum technology to treat wastewater, as the cost of MBBR is cheaper and consumable cost is economic in comparison to MBR Technology.

Advantages of MBBR

  •  There are no limitations of height as long as compressors can be suitably used
  •  Circular structures can be used to economize on construction costs & time
  •  The structures can be easily covered for indoor air quality when needed.
  •  Requires lower footprints compared to conventional activated sludge.
  •  Easy to operate and maintain

Disadvantages of MBBR

  • The area per unit volume of the media offered by various vendors are different and also each vendor advocates his own criteria for the relative ratio of the volume of media to volume of aeration tank, which makes it difficult to bring about common and validated standard design criteria. The quality of plastic media varies.
  • The verification of whether the media is moving about the entire volume of the tank or merely clumping at the top layers and if so the method of mixing it up through the tank volume without shearing of the biomass on it are issues of infirmity and which may need gentle movers of the media through the volume of the tank.
  • Furthermore, the media is a patented product.
  •  Higher energy input if used without biomethanation
  1. Sequencing Batch Reactor (SBR)

SBR Does not require separate secondary clarifiers and major return sludge pumping stations, good use of common walls, Simple Square, rectangular or circular structures, can reduce the footprint compared to 5 conventional activated sludge processes.

Advantages of Sequencing Batch Reactor

  • Can remove N and P concurrent with BOD
  •   Absence of odor and corrosive gases
  •   Improved aesthetics
  •  Capability to manage and treat variable loading conditions; such as normal, diurnal, dilute monsoon and shock loads.
  • Less manpower due to automatic control and easy to operate and to maintain.
  •  High-quality effluent for reuse without separate nutrient removal and fine filtration.
  • Can be expanded as a modular system.
  • Can also be used with primary clarifiers and conventional F/M ratio for bio-methanation and energy recovery.
  • The system can generate a stabilized sludge.

 Disadvantages of Sequencing Batch Reactor 

  •   No provision for sludge management
  •   No provision of primary treatment to moderate pollution load variations
  •   Higher energy input if used without bio-methanation
  •   Requires at least semi-skilled manpower
  •   Patented process technology and decanters defying local cannibalization

Why Choose MBR Technology to Optimize Your Sewage Treatment Process

  1. One of the easiest and most effective ways to optimize existing biological systems is integrating a moving bed reactor process (MBR). These systems take aspects of two other treatment systems to utilize their advantages without their disadvantages.
  2. This technology does not require recirculation lines.
  3. This is one of the benefits of MBR fixed film systems. Recirculation requires extra piping and additional pumps and energy, therefore, there are no extra costs associated with these additional recirculation processes.
  4. Processes that require recirculation also typically produce more sludge in the clarifying step, more sludge that will need to be disposed of. This also means that the overall efficiency of the reactor is not dependent on how well the effluent settles. There is also the possibility of improving the efficiency of sludge recycling processes.
  5. MBR systems improve the characteristics of sludge settling in the clarifier and the sludge settles better as well.
  6. The moving bed technology also has improved retention times when compared to other biological sewage treatment processes.

Now reading this blog you will get an idea that which technology of sewage treatment plant is the best fit for your requirement.

If you are going with the author of this blog Netsol Water Solutions, MBR is the best Sewage Treatment Plant Technology. Netsol is India’s biggest Sewage Treatment Plant Manufacturer, Effluent Treatment Plant Manufacturer, Commercial RO Plant, and Industrial RO Plant in Noida – Delhi. We have our own manufacturing unit in Greater Noida. Call or Whatsapp on 9650608473 for more details.

March 18, 2021

TSS stands for Total Suspended Solids. TSS is that suspended particles (Dry-weight) in water that is not dissolved, can be trapped by a filter by using a filtration system in a sample of water. It is also a major water quality parameter used to access the specimen by any type of water or waterbody, for example, ocean water or wastewater after the treatment in the wastewater treatment plant.

Total Dissolved solid acquired through separate analysis to determine water quality. In previous, TSS is also known as a non-Filterable residue (NFR), changed due to a nonproper understanding of other scientific disciplines.

How Does TSS Affect the Water Quality?

When you are talking about water quality, due to the high level of total suspended solids the temperature of the water is dramatically increased and the total dissolved oxygen level decreases. This all happens just because the suspended particles absorb extra heat from solar radiation than the normal water molecules do.

How TSS Is Measure in water or wastewater treatment

The most accurate and common method of measuring the TSS is by weight. A water sample is filtered, dried, and weighed. This method is most accurate in all other techniques of measuring Total Suspended Solids. Sometimes it is also difficult and takes more time for perfect results.

What is the Total Suspended Solids calculation Formula (mg/L)?

TSS in water or wastewater treatment plant calculated in milligram per litter as per the following given equation:

(Dry weight of residue and filter – the dry weight of filter alone, in grams) / ml of samples * 10,00,000

How to lower your Total suspended solids in Wastewater Treatment?

The most important measure in the Wastewater treatment plant is TSS. Total suspended solids level must have adhered to state environmental regulation. Because high TSS levels can harm wildlife and dangerous to human health. Your wastewater treatment equipment also can be damaged by elevated TSS.  By following some of the given effective ways to keep your TSS under Control.

  • Focuses on removing first TSS from wastewater
  • Used a properly sized EQ Tank (Equalizer Tank). This will help to maintain the flow and loading rate.
  • Control over the pH of the wastewater. It is the basic and most important to manage the pH Level. To know more read: What is ph in wastewater?
  • Use modern stainless steel or plastic make plate pack DAF.
  • Use of the regenerative air dissolution turbine pump uses minimal electricity to dissolve air into water. This may lead to producing 20-30 micron air bubbles.
  • Use high rated modern DAF which cleans by you to avoid facing clogging, solids separation problems, higher TSS, and high chemical feed rate.
  • Use performance-tested liquid chemistry which allows for full automation to lower the cost, and eliminates the wetting issue.
  • Locate properly chemical injection points and always test them.

By reading the above point you are able to know that how to control TSS, which is a crucial part of your wastewater treatment plant.

If you are looking for the best quality Sewage Treatment Plant in India (Any part of the Country), Kindly make us a call at +91-9650608473 or write your requirement on

Netsol Water is a top-rated sewage treatment plant manufacturer, effluent treatment plant manufacturer, Commercial RO Plant manufacturer in Delhi | Noida | Ghaziabad | Faridabad | Greater Noida | Mumbai | Chennai | Goa | Lucknow | Bihar | Patna | Uttrakhand | Himachal Pradesh.

February 13, 2021

Wastewater Treatment Plant

A Wastewater Treatment Plant is a process or you can say the combination of different processes (Biological, Physical, Chemical) that are used to treat and remove the contaminants from industrial wastewater or sewage to convert it for reusability purposes or to return it into the water cycle with acceptable impact on the environment.

Treated water is safe enough to release it into the environment or reusability (for eg. Gardening, Farming, Cleaning, Toilets, etc.).

Where is the largest wastewater treatment plant?

The largest wastewater Treatment Plants can be categorized on the basis of different terms like- Capacity, Size, Work efficiency during Dry and wet weather, etc.  In terms of capacity and work during both dry and wet weather, is Jean-R. Marcotte Wastewater Treatment Plant in Montreal, Canada opened in the Year 1984.

The Capacity of plants in dry weather is 2780000 m3 per day and during wet weather, it is 7600000 m3 per day. secondary treatment of effluents would be the Deer Island Waste Water Treatment Plant of Boston.

List 5 Largest Sewage Treatment Plant in World

Below listed Top 5 Largest STP Plant, till now it is the largest STP in the world on behalf of their capacity and other major terms. Here you can get the plant name and located City and country name with capacity.

Plant nameCityCountryOpeningYearDry-weathercapacity (m³ per day)Wet-weathercapacity (m³ per day)Area(km²)
Jean-R.-Marcotte Wastewater Treatment PlantMontreal Canada19842780 0007600 0000.67
Detroit Wastewater Treatment PlantDetroit USA19402460 0006435 0000.53
Stickney Water Reclamation PlantChicago USA19302665 0005450 0001.67
Deer Island Waste Water Treatment PlantBoston USA19681438 0004542 0000.6
Blue Plains Advanced Wastewater Treatment PlantWashington D.C. USA19371450 0004073 0000.62

Largest STP Plant in India

India's Largest Sewage Treatment Plant | Netsol water Solutions

The Delhi Jal Board (DJB) approved the setting up of a new sewage treatment plant (STP) at Okhla which, it claimed, will be India’s largest stp plant.

This blog post is written by Netsol Water Solution, which is a leader in

the wastewater treatment industry of India. For More Info or Requiremntment of Sewage Treatment Plant, Effluent Treatment Plant, Commercial RO Plant in Delhi, Industrial RO Plant in India, Call At- 9650608473 or wite

February 11, 2021

Ever wondered Where Does the Wastewater goes after an easy Flush?

It goes to the sewage treatment plant and if it didn’t tons of things would occur like as an example the groundwater wouldn’t be reusable, the lakes will become contaminated and there would be heaps and tons of solid waste all across town if there was no Sewage Treatment Plant in place.

Your Sewage Should be Treated and here’s Why!

The importance of sewage treatment plant design is to withhold all the solids the maximum amount as possible and before the leaving water called an effluent is discharged to the environment. The solid matter decays it uses oxygen that’s needed by the water plants and animals.

Water Recycle

With the continued water scarcity in cities and towns the sole way ahead to treat the sewage water by sewage treatment plant in order that the non-hazardous water is often reused to extend the surface water or recharge the bottom table water.

Different ways of Sewage Treatment Plants work

As discussed earlier, there are 2 distinct sorts of treatment that are employed in modern treatment plants. We’ll describe these as “fixed biology” and “active sludge.”

Fixed Biology

Fixed biology treatment plants grow bacteria on some filter material. The filter material will often be many small plastic balls with grooves cut in to permit an outsized area. The massive area is vital because it allows much room for bacteria to colonize. With this sort of sewage treatment, water flows through the filter material, therefore the “food” involves the bacteria.

Active Sludge

Active sludge treatment plants (or activated sludge) don’t have filter material, instead, bacteria are inspired to grow freely within the water. Waste is introduced to the chamber and gets mixed with the bacteria. The bacteria bind to the food and start feeding upon it. Samples of Active sludge treatment plants is the Grand NSSTS

Pros and Cons of Active Sludge and Fixed Biology Treatment:

Both styles work all right within the treatment of wastewater.

Determining which is true for you isn’t the most consideration you ought to be making, strength of the tank, guarantees, noise levels, and aesthetics are belongings you should consider first.

However, active sludge systems have less of a capability to the dam if items like wet wipes get through the system, and there’s some suggestion that bacteria can last slightly longer with no food when growing on the filter material.

Netsol Water Solutions is the author of the blog, who is one of the best and leader of Sewage Treatment Plant Manufacturer, ZLD Plant Manufacturer, Effluent Treatment Plant, Commercial RO Plant, and Industrial RO Plant Manufacturer. If you have any inquiries or questions call on +91-9650608473 or write

February 9, 2021

The basic function of wastewater treatment is to speed up the natural processes by which water is purified. There are two basic stages in the treatment of wastes, primary and secondary, which are outlined here. In the primary stage, solids are allowed to settle and removed from wastewater. The secondary stage uses biological processes to further purify wastewater. Sometimes, these stages are combined into one operation.

What is a wastewater treatment system?


A wastewater treatment plant is a Combination of systems made up of several individual technologies that used for your specific wastewater treatment needs.

Sewage Treatment is rarely a static process, and a wastewater treatment system that is engineered to accommodate fluctuations in treatment needs will go a long way in avoiding costly replacements/upgrades down the line.

An efficient and well-designed wastewater treatment system should be able to handle:

  • process variations in contamination and flow
  • variations in water chemistry needs and required chemical volumes adjustments
  • possible changes in water effluent requirements

For a detailed information stage and flow diagram of sewage treatment plant/wastewater treatment plant, you can watch the complete video.

Call: +91-9650608473 or for any query of recquirement.

February 2, 2021

January 28, 2021

MBBR Full Form in STP

MBBR is commonly known as the Moving Bed Biofilm Reactor, is a type of wastewater treatment process that was first invented by Prof. Hallvard Ødegaard at the Norwegian University of Science and Technology in the late 1980s.

Moving bed Bioreactor (MBBR) an economically solution for wastewater treatment if the “bulk” of the pollution load must be disposed of (as means of cost reduction) or if applicable discharge regulations aren’t as strict.

With this application, we provide advanced wastewater treatment solutions for the economic and municipal markets. These solutions significantly increase the capacity and efficiency of existing wastewater treatment plants, while minimizing the dimensions of latest plant deployments.

the blog is associated with Netsol Water Solutions, which is into manufacturing Effluent Treatment Plant, Sewage Treatment Plant, Water Treatment Plants, and Industrial RO Plant.

December 28, 2020

100% of the wastewater, greywater, and sewage is recycled using the Advanced Sequencing Batch Reactor (SBR) from Netsol Water, India. The treated water is employed for flushing and gardening resulting in enormous water savings. The system operates fully automated and requires very low periodic maintenance also. The kitchen water is skilled a grease trap and an anaerobic digester – to scale back the oil, fats, and grease getting into the SBR. The treated water from the SBR is filtered employing a pressure sand filter and an activated charcoal filter and at the delivery point, it passes through the UV filter also to scale back the suspended impurities and control the microbial growth.

Samples of Treated waste water by netsol -9650608473

The recycled water which features a high level of micro-nutrients is extremely good for gardening and caters to the entire gardening and flushing needs of the power.

For detailed result and best wastewater treatment machine contact Netsol Water Solutions for Best Sewage Treatment Plant.

Greater Noida


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


We Are Everywhere in India & Overseas.


Follow Our Activity

TO get an update about our daily activity just follow us and Join the Hands to Save Mother-Earth