Through a new network of main trunk sewers and secondary lines, the proposed system will manage the collection of sewage from residential areas for transmission to a sewage treatment plant in the Southeast side of the village.
Here the sewage will be treated and used for irrigation purposes on land earmarked for cultivation.
The network has been designed with the following considerations:
- Achieve self-cleansing velocities to avoid silt deposition and clogging of sewers
- Provide effective ventilation
- Avoidance of back surcharging
- Minimised infiltration
- Structural safety
Additional considerations were also given to developing a system that does not require huge capital investment and high operating costs. It will also need to be operated, monitored and maintained by local people who can manage the system with little external help. For these reasons, a Decentralised Wastewater Treatment System (DEWATS) which uses minimal energy consumption is being proposed at Khintla village.
- Improved water supply has led to the subsequent problem of drainage, since the village does not have drainage and sewerage system
- Prior to water supply villagers had to walk a minimum of 2.5km each way to collect water
- Sanitation facilities are limited to a makeshift bathing space in each household
- Few households have toilets
- The village has no paved roads and storm water drainage
- Village streets act as drains, and as such carry storm water.
The Proposed System Layout
A graphical representation of the proposed system layout for the Khintla village sewerage network and sewage treatment plant.