What are the Standard Parameters of STP Plant?

Water treatment plants process millions of gallons of wastewater daily to ensure clean water for human life. The treatment success depends on tracking specific standard parameters of sewage treatment plants that control the treatment process to meet environmental standards. Plant operators need to understand these parameters to optimize operations and make data-driven decisions. By monitoring these parameters treatment plants produce water that meets safety standards and protects the environment.

Standard Parameters of Sewage Treatment Plant

The standard parameters of Sewage Treatment Plants are:

Physical Parameters

Plant operators start by measuring physical parameters to understand wastewater characteristics and monitor treatment progress. These measurements provide the base data needed to adjust treatment processes.

Temperature: Biological treatment processes speed up or slow down based on temperature. Operators maintain temperatures between 20 to 35 degrees Celsius. When temperatures rise treatment reactions accelerate but oxygen levels drop. Cold temperatures make treatment processes take longer.

Total Suspended Solids (TSS): Plant operators measure TSS to track floating particles in wastewater. The treatment must bring TSS below 30 mg/L before discharge. High TSS blocks sunlight from reaching aquatic life and damages ecosystems.

Colour and Odor: Different contaminants create distinct water colours. Successfully treated water appears clear. Foul smells indicate high organic content or poor aeration. Properly treated water has no odour.

Turbidity: Water clarity shows up in turbidity measurements. Treatment improves as turbidity decreases. Operators aim to achieve turbidity below 5 NTU (Nephelometric Turbidity Units) in treated water.

Chemical Parameters

Chemical parameters reveal the substances present in wastewater. These measurements guide operators to select appropriate treatment methods.

pH Level: Bacterial growth and chemical reactions respond to pH levels. Operators maintain pH between 6.5 to 8.5. Continuous pH monitoring creates optimal conditions for treatment processes.

Biochemical Oxygen Demand (BOD): Bacteria consume oxygen to break down organic matter which BOD measures. Treatment must reduce BOD below 30 mg/L. When BOD stays high it signals treatment problems.

Chemical Oxygen Demand (COD): COD measurements show how much oxygen chemical reactions need to break down organic matter. Treated water should maintain COD below 250 mg/L. Operators use the COD/BOD ratio to evaluate how well bacteria can decompose the wastewater.

Dissolved Oxygen (DO): Aerobic bacteria need DO to function. Operators keep DO above 2 mg/L in aeration tanks. More DO supports increased biological treatment activity.

Total Dissolved Solids (TDS): TDS measurements track dissolved substances in water. Treatment processes must keep TDS under 2000 mg/L. Excessive TDS damages equipment and reduces water quality.

Biological Parameters

The biological treatment success depends on healthy microorganisms. These parameters help operators maintain optimal conditions for beneficial bacteria.

Mixed Liquor Suspended Solids (MLSS): Operators measure MLSS to track microorganism populations in aeration tanks. They maintain MLSS between 2000 to 4000 mg/L. This measurement controls the biological treatment intensity.

Food to Microorganism Ratio (F/M): The F/M ratio balances available organic matter with bacterial populations. Operators target F/M ratios between 0.2 to 0.5. This balance maximizes organic waste breakdown.

Sludge Volume Index (SVI): SVI tells operators how well sludge settles. Well-settling sludge shows SVI below 150 mL/g. This measurement helps optimize clarifier operations.

Microscopic Examination: Operators examine bacteria under microscopes to check population health. Diverse microorganism communities show effective treatment conditions. These observations guide parameter adjustments.

Fecal Coliform: Testing for fecal coliform confirms disinfection effectiveness. Treated water must show less than 1000 MPN/100mL. This measurement safeguards public health.

Conclusion:

Do you want to optimize your Sewage Treatment Plant parameters? Our experts will help you understand and improve your treatment process. Contact us now to discuss your plant’s specific needs and get personalized recommendations. Set up a consultation to start enhancing your treatment efficiency today.

Contact Netsol Water at:

Phone: +91-965-060-8473, Email: enquiry@netsolwater.com