Hyderabad: Coming to the rescue of the polluted Neknampur Lake, an NGO, Dhruvansh, has constructed a wastewater wetland treatment plant to improve the water quality in the water body and to support the ecosystem for plants and other animals.
The wastewater wetland treatment plant is said to be based on an effective, low-cost technology to improve the water quality by filtering harmful nutrients and chemicals from municipal waste dumped in the lake.
“It is a low-cost, low-tech approach to filter out sewage from the water body. The treatment plant has five chambers and in these chambers, the physical, chemical, and biological processes combine to remove contaminants from wastewater. All the chambers have been tested,” Madhulika Choudary of Dhruvansh said.
This constructed wetland, which is about 1,000 square feet, is a type of sustainable wastewater treatment system that is designed to look and function as a natural wetland does. “The water is rotated from one side, passing through all the chambers and then sent back to lake. The construction is carefully planned to integrate into the natural surrounding landscape and is built using natural materials like native plants, trees, soil, sand and stones,” Madhulika said.
Wetlands play a vital role in the water cycle where they can control both flooding and low flow in certain areas and they can also help improve wastewater quality by filtering and removing high levels of toxic waste.
Considering the benefits of wastewater wetland treatment plants, the NGO has appealed to the government to develop lakes on the wetland model rather than the mini tank bund model.
Benefits of Wastewater Wetland Treatment Plants
•Very low running and maintenance costs
•Supports diverse ecosystems for plants and animals
•Improves water quality of streams and rivers in surrounding areas
•Sustainable water management tool which enhances local environment
•Can be used as educational and recreational centre for local communities