Sewage Treatment Plant (STP)

Sewage Treatment Plant (STP)

Sewage Treatment Plant (STP) became a statutory requirement of all the State Pollution Control Boards, everybody, whether Hotelier or Industrialist were looking for economical, easy to install and operate compact type Sewage Treatment Plant. Sewage Treatment (STP) Plants that are precision designed to receive waste from domestic, commercial as well as industrial sources and effectively remove materials damaging water quality and can harm the health of the humans consuming it. With the systems based on the principal working objective of allowing effluents to be safely disposed of without endangering human health or the surrounding natural environment, the STP Plant Manufacturer are well appreciated for their high-quality standards. We provide complete solutions for STP Plant Manufacturer which includes biological, physical, and chemical treatment which are based on the latest technologies.

Capacities of Sewage Treatment Plant (STP)

Sewage Treatment Plants are designed to handle different volumes of wastewater depending on the requirement of residential, commercial, and industrial sectors. Common STP capacities include:

Standard Treatment Capacities

  • 5 KLD to 500 KLD
  • 1 MLD to 50 MLD

Available Capacity Range

10 KLD, 15 KLD, 20 KLD, 25 KLD, 30 KLD, 40 KLD, 50 KLD, 65 KLD, 75 KLD, 80 KLD, 100 KLD, 150 KLD, 175 KLD, 200 KLD, 250 KLD, 300 KLD, 350 KLD, 400 KLD, 450 KLD.

Capacity Classification

Small Scale STPs:

  • Suitable for residential buildings, villas, hotels, and small communities.
  • Capacity: 5 KLD to 50 KLD

​Medium Scale STPs:

  • Ideal for large residential societies, commercial complexes, and small industries.
  • Capacity: 50 KLD to 500 KLD

Large Scale STPs:

  • Used in industrial facilities, municipal corporations, large institutions, and townships.
  • Capacity: Above 500 KLD to several MLD

Applications of Sewage Treatment Plants (STP)

• Used Oil / Mining Industry: For treating wastewater containing oils, grease, sediments, and contaminants.

• Hospitals & Healthcare: Treating wastewater containing pathogens, chemicals, disinfectants, and pharmaceuticals.

• Dairy & Beverage Industry: Managing wastewater with high organic load, fats, oils, and sugars.

• Petrochemical Industry: Treating wastewater with hydrocarbons, chemicals, and processing effluents.

Technologies Used in Sewage Treatment Plants

Sequencing Batch Reactors (SBR) – SBR is an advanced wastewater treatment technology that operates in batches instead of continuous flow. It works on the activated sludge principle but in a fill-and-draw sequence, including phases such as filling, aeration, settling, and decanting. This process ensures efficient removal of organic pollutants and is ideal for varying wastewater loads.

Membrane Bioreactors (MBR) – MBR technology combines biological wastewater treatment with membrane filtration to deliver superior effluent quality. The biological process breaks down contaminants, while the membrane filters separate solids from treated water. MBR systems produce high-purity, reusable water, making them suitable for industries needing stringent discharge standards, though they involve higher installation and operational costs.

Moving Bed Biofilm Reactors (MBBR) – MBBR treatment uses biofilm carriers in aeration tanks to promote microbial growth. As these carriers move freely in the tank, bacteria degrade organic pollutants efficiently. MBBR systems are compact, energy-efficient, and require low maintenance, making them more effective than traditional activated sludge processes.

Frequently Asked Questions

An STP, also known as a wastewater treatment plant, is a facility that cleans wastewater from toilets, sinks, and tubs.

A sewage treatment plant works by holding back large solids and debris from the wastewater within the primary settlement tank. The wastewater then goes through the biological zone where bacteria and microorganisms break down and consume the organic matter. 

It is important to have a sewage treatment plant to prevent environmental pollution, protect public health and promote sustainable water use. 

Sewage treatment plants collect, treat, and discharge wastewater, providing a service essential to environmental and public health. 


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