• In Bangalore it is now mandatory for all complexes with 20 or more flats to set up STP within 3 months
  • Big Relief to Bangalore Apartment Owners- MoEF dilutes Discharge standards on 13-10-2017 to make it easy for STP owners
  • Micro STPs for 20 to 30 Apartments- Faster delivery- Prices start at 5.0 lakhs
  • BBMP issues guidelines on setting up STP in apartments in Bangalore. Details in this website
  • Indus launches 'Zero Discharge Sewage Treatment Plants' & Instant Sewage Treatment Plants 'e-STP'
  • Effluent Treatment Plants for Restaurant, Car Wash & Diary Industry
  • We have launched 'Zero Discharge Sewage Treatment Plant' for 100% recycle of Sewage
  • Channel Associates wanted in All State Capitals

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Home -  How It Works

    How it works?

    1. The first compartment is a SEDIMENTATION chamber wherein the raw wastewater settles into distinct sludge and scum layers under anaerobic conditions. The relatively clear effluent flows through twin baffles into the next chamber. 

    2.    This second chamber is the largest in the unit, providing residence time for the slow process of ANAEROBIC biodegradation. In contrast to a standard septic tank, the anaerobic treatment process in the EasySTP is enhanced with the use of filter media. Retained in the bottom half of the chamber, these media are designed to provide surface area optimised for biofilm development. The result is a biologically rich elevated sludge blanket through which the water flows and is treated. The water is baffled again as it flows into a third chamber.

     3.    The third chamber is the site of AEROBIC treatment. Air, supplied by a centrifugal air compressor, travels through a perforated piping system and escapes into a column of smaller propylene media. These media are also designed for optimal biofilm formation. The action of the air constantly circulates the media in the top two-thirds of the chamber, creating a fluidised bed. This section of the process is Moving Bed Bio Reactor (MBBR).
    Aerobic bacteria thrive in this rich, oxygenated environment, resulting in a high degree of treatment. Media in the chamber’s lower third remain stationary and filter suspended solids. The programmable compressor automatically backwashes the whole column of media for 5 or 10 minutes, one or two times each day and transfers residual solids back to the head of the system for further digestion.

     4.    The fourth chamber stores the treated water awaiting discharge. In addition, an air-lift pump (powered by the compressor) recirculates a specific amount of treated water into the head of the system for denitrification and flow equalisation.

     5.    Finally, the treated water is disinfected as it flows past a tablet chlorinator, before being discharged to a storm sewer or a nearby body of water or recycled for irrigation.