Decentralised Waste Water Treatment | Centre for Science and Environment

Decentralised Waste Water Treatment


Frequently Asked Questions

1. What is Decentralised wastewater treatment system?
Decentralised wastewater tretment system (DWWTS) is an approach consisting of different technologies to provide wastewater treatment solutions for small, individual or cluster type facilities. It is a sustainable method to treat domestic wastewater which is generated from the office campuses, residential societies and institutional premises.

2. Why should I adopt this method?

Cost estimation for planning and designing of decentralised wastewater treatment system

Decentralised wastewater treatment plant is a site-specific system. The different components of the system  settler , anaerobic baffled reactor , planted filter and polishing pond are planned and designed according to the treatment requirement of the wastewater generated. Average water consumption for domestic usage in India is 135 Lpcd.  80% of the water which is used or consumed for domestic purposes comes out as a wastewater. An on-site wastewater treatment plant like DWWT can be installed to treat and recycle this wastewater in order to close the loop.

Decentralised Wastewater Treatment Training Programs: Alumni

Training programmes focus on rendering improved capacities and understanding about decentralised approaches to municipalities under Centre of Excellence Programme of Ministry of Urban Development in order to establish decentralised wastewater treatment plants , particularly in un-sewered areas that would facilitate recycling and reuse of wastewater and also to general practising professionals of India and South Asia.

Policy Paper on Septage Management in India

CSE has developed a "Policy Paper on Septage Management in India" as deliverable of Centre of Excellence in the area of sustainable water management under the Ministry of Urban Development. This document on septage management aims to assist the Government of India towards preparation of national level septage management policies and guidelines. Access to improved sanitation in urban India has risen but the management of onsite sanitation systems such as septic tanks remains a neglected component of urban sanitation and wastewater management. Septage, which is a fluid mixture of untreated and partially treated sewage solids, liquids and sludge of human or domestic origin, flows out of septic tanks and enters waterways or is generally disposed into nearest water body or low lying areas. This leads to serious health and environmental implications. This situation demands a well- defined regulation, guidelines and management strategy for septage in the country. The septage management approach, discussed in this report, is an effort to assure that septage can be managed in a responsible, safe, and consistent manner across the states.

Download Report

The policy paper can also be viewed at the website of Ministry of Urban Development under National Urban Sanitation Policy

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