Decentralized Wastewater Treatment System

About DEWATS

DEWATS is a domestic decentralized low maintenance sewer waste water treatment system developed by Bremen Overseas Research and Development Association (BORDA), Germany specifically for developing countries. It is promoted by CDD (Consortium of DEWATs Dissemination), Bengaluru and its partners in India.

Our DEWATS Projects

• Installation of DEWATs system (15000 litres cap.) for Kadi Municipality, Gujarat with financial support of World Bank, India.
• Design for 40000 Litre per day treatment of wastewater from sanitation block in Samarpan Ashram, Dandi
• Design of 48000 litre capacity wastewater treatment system at Parvatinandan residential complex, Sarkhej, Ahmedabad
• Design of DEWATS system for IIM, Udaipur. (330000 litres/day)

Services for DEWATS

• Design & Planning, Turnkey Services
• Service contracts for O & M for urban local bodies and institutions.

The Process

Settler Tank
* Sedimentation tank stabilizing settled sludge by anaerobic digestion
* Dissolved and suspended matter leave tank untreated
* Removal of COD 20-25%, BOD 15-20%, TSS 50-55%

DEWATS Service Packages

• Treatment Systems
• Community Based Sanitation
• School Based Sanitation
• Sanitation for Hospitals & Hotels
• Wastewater Treatment for Agro-Industry
• Emergency Sanitation
• Sanitation for Prisons
• Sanitation for Real Estates
• Sanitation Mapping
• Municipal Sludge Treatment Plant
• Health Impact Assessment & Hygiene Education
• Capacity Development
• Standardisation
• Research & Development

Advantages

• Decentralized system – useful in areas with space constraint
• Low operation and maintenance cost
• Does not require skilled human resources for operation.
• Re-use of treated water
• Low/Nil post installation management burden

Development/Environmental Impact

• Reduction in water body pollution - direct impact on community health
• Improved air quality and reduction in green house gases

Salient Features

• Simple, Flexible, Decentralized
• Only physical and biological system. Works without technical energy
• Suitable for household, institutional level, village/city level
• Treatment from 1,000 - 500,000 litres
• Space Required: 8-12 sq mt per 1000 litre
• Low operation and maintenance cost
• Operates without skilled manpower
• Possible use of water after treatment: agriculture, building construction, ground water recharge, fish pond, domestic use like flushing
• Side product like generation of bio gas
• Tested in Indian environment