AAF - Odour Free STP Emission Solution at a Residential Township

Client Requirement
Karnataka State Pollution Control Board (KSPCB) released guidelines for the design, location and use of sewage treatment plants (STPs) and made it mandatory for apartments and commercial complexes to install STPs. STP treats the water that goes down drains before releasing it back into the environment. 

Most of the new sewage treatment plants (STP) are built in Building Basement area. The whole facility is enclosed in a single building. When the STPs are built in the basement of the building, as per the rules of pollution control boards (in India), it is compulsory to provide exhaust from the STP room. The exhaust air from this STP generates smell/odour as it contains chlorine used for treatment and H2S, NH3 generated during waste processing, these gases are harmful to human health. To counter these issues builders usually makes a duct to release the gases from the terrace or at the basement level. Either way it leads to occupants’ discomfort and breathing issues.

So, the client had to upgrade their existing STP with efficient gaseous contaminants filtration for its new residential township to ensure safe & healthy outdoor environment of the residents.

The AAF International Solution
Being a dominant leader in filtration industry and having served hundreds of satisfied clients, AAF always has an upper hand when it comes to having information on upcoming & ongoing project in relevant sectors due to its past performance and customer service. AAF representatives reached out to the client’s project manager hence the requirement of the STP upgradation came directly from the client.

AAF representative along with the technical expert visited the township and conducted an audit to have an idea on the current situation on the STP performance.

Odour control is essential where wastewater treatment plants release sulphur compounds, ammonia, and volatile organic compounds (VOCs).

Based on the survey report and AAF expertise, the representative suggested a 3-pass chemical filtration system – First stage containing – SAAF Carb MA, second stage – SAAF Carb MB and third stage – SAAF Blend GP with MD cassette arrangement to ensure the desired result.

AAF representative proposed customised SAH (Side Access Housing) for 24000 CFM for 2 STPs.

Filter & Equipment’s Recommendations
Proposed media were SAAF Carb MA, SAAF Carb MB and SAAD Blend GP with SAAF MD Cassette arrangement.

This odour control method treats the air to remove odorous gasses. This is done by forcing the odorous air displaced from the wet well across a 3 pass MD cassettes which absorbs, adsorbs & chemisorbs most of the gases which causes health problems & adds pollution to the atmosphere.