Aim and Objectives of Wastewater Treatment Plant (WWTP)
- Provide treatment to incoming wastewater
- To provide maximum opportunity to reuse of treated water for horticulture or secondary purposes
- To provide clean water to percolate into ground water tables
- To create decentralised systems that will not put an extra load on centralised infrastructure.
Methodology of Designing a WWTP
Pond Reconnaissance and Identification → Pond Profiling → Pre-Study (Population study/ Water Tests/ Soil Tests/ Contour Maps/Demarcation of Private and Government Land) → Project Feasibility (based on the results of pre-studies, using a decision matrix of the land available, budget available, quality of wastewater, required operations and maintenance required → Best fit WWTP is decided) → Detailed Project Report → Administrative/Financial Approvals (Resolutions from authorities/ Funds acquired and sanctioned) → Civil Construction → Commissioning of WWTP.
|Moving Bed Biofilm Reactor – This reactor contains filter material that is stored within a tank. Aeration is provided, that allows the biofilm to develop as the wastewater trickles through the filter media.
|The water is treated by passing through filters made of biological materials, and to allow prolonged disinfection of the water, passes through an ozonation tank.
|Maujabad/ Daula/ Chandla Dungarwas/ Tajnagar/ Hariahera/ Palasoli/
|Biological treatment of water, as the wastewater passes through a bed of specialised plants, where treatment takes place by filtration through the layers of the soil strata, and biological treatment takes place at the root of the plants and the various microrganisms present in the soil
|This system is based on anaerobic treatment of incoming domestic wastewater. The technology requires no major operations and maintenance, apart from the maintenance of plants in the constructed wetland. The treatment process is a multi-barrier system that allows for physical, biological and chemical treatment of wastewater
|Advanced Eco-Reactor – The plant is based on the basic principle of trickiling filter, where the wastewater is sprayed over a bed of numerous layers of gravels, bio-filters such as coconut husks that are also initiated with enzymes that treat the water, that provide both physical and biological filtration.
|This technology is based on using both a biological consortia for treatment of wastewater, by passing through a tank containing carrier materials to increase the surface area in contact with the wastewater. Then the treated wastewater is passed through a root zone system containing aquatic plants as a polishing step to remove colour and odour from the wastewater.
|A CONSTRUCTED wetland is a shallow basin filled with some sort of filter material (substrate), usually sand or gravel, and planted with vegetation tolerant of saturated conditions. Wastewater is introduced into the basin and flows over the surface or through the substrate, and is discharged out of the basin through a structure which controls the depth of the wastewater in the wetland.