As we know that treated greywater is rich in nutrients like nitrogen and phosphorus which are essential for vegetation growth, opting for hydroponic gardening would utilize the greywater to its best potential, thus bringing down not only the costs pertaining to gardening but also the freshwater demand for soil gardening.
How is Wastewater Treatment used for Hydroponics?
1 Wastewater from the kitchen is collected in a Settler Tank.
2 From Settler Tank, it then passes through a baffled reactor where anaerobic reaction takes place. This reaction brings down the BOD level from 350 to 50 approximately.
3 After anaerobic treatment, the water is pumped up in an overhead storage tank.
4 From Overhead storage tank water would flow by gravity to the hydroponic plantations.
5 Hydroponics would remove the nitrates and potash present in the water, at the same time helping the plants to grow.
For every wastewater treatment plant to be completely effective it is very vital to incorporate a system which re-uses the treated water. Nowadays, Hydroponics is proving to be a breakthrough concept that not only increases the growth rate in plants in a safe manner but also re-utilizes the waste water.