As part of our topic on water management we explored the local water treatment works.
Photos and article by M
First the waste water travels down the main pipe line and then enters the waste water treatment works.
Then it enters the screening process where the large objects are separated from the waste water.
After that, the waste water enters the Grit and Sand channels where sand and grit settles at the bottom.
Next comes the sediment tanks where other solid particles in the waste water settle at the bottom of the tank and form a thick sludge.
Soon after, the waste water arrives at the Biological filters which is where the water is sprinkled on to a large circular bed about two metres deep. The beds are filled with small rocks covered in bacteria that literally eat the harmful waste.
Finally the waste ends up in the final settling tank where small particles settle leaving the cleaned water to flow down to rivers or streams.
