Decentralized Wastewater Treatment Systems (DEWATS)
BORDA
A Decentralised Wastewater System (DEWATS) refers to a decentralized, community-level wastewater treatment technology.
DEWATS is a technical approach to decentralized wastewater treatment in developing communities. The passive design uses physical and biological treatment mechanisms such as sedimentation, floatation, aerobic and anaerobic treatment to treat both domestic and industrial wastewater sources. DEWATS is designed to be affordable, low maintenance, use local materials, and meet environmental laws and regulations. DEWATS has service packages available for the sanitation needs of small and medium-sized enterprises including communities, schools, municipalities, agro-industry, emergency settlements, hospitals, hotels, and prisons.
This is a considered and implemented solution in developing countries including: Afghanistan, Bangladesh, Bhutan, Cambodia, Cuba, Ecuador, Haiti, India, Indonesia, Iraq, Lao People’s Democratic Republic, Lesotho, Mali, Mexico, Myanmar, Nepal, Nicaragua, Philippines, South Africa, Tanzania, Viet Nam, Zambia
This solution is implemented by Bremen Overseas Research & Development Association (BORDA)
Pricing varies depending on project size. Emergency sanitation costs are approximately 18 USD per user, while the total construction cost of DEWATS for Hospitals is approximately 67,000 USD. Community sized DEWATS has been found to range from 150-300 USD per user.
Competitors include the Biofil Digester and Biopipe
Goal 6: Clean water and sanitation
Users seeking improved waste disposal, users with no sewer network or municipal treatment plant, users seeking passive wastewater treatment made from local materials
