315mm Underground Drainage Non Return Valve Single Flap-Lockable
160mm Vision 600 chamber, outlet adaptor to 160mm UPVC – Socket
250mm Vision 600 chamber, outlet adaptor to 250mm UPVC – Socket
160mm Vision 600 chamber, outlet adaptor to 150/172mm TW – Socket
250mm Vision 600 chamber, outlet adaptor to 150/172mm TW – Socket
250mm Vision 600 chamber, outlet adaptor to 225mm TW – Socket
315mm Vision 600 chamber, outlet adaptor to 150/172mm TW – Socket
315mm Vision 600 chamber, outlet adaptor to 225mm TW – Socket (Level Invert)
315mm Vision 600 chamber, outlet adaptor to 300mm TW – Socket
What is the difference between a septic tank and a sewage treatment system?
Septic tanks have for many years been the only option for properties with no connection to a mains sewer. The septic tank collects solids and oils in the sewage and discharges the untreated water content into a soakaway. As the water seeps through the ground, bacteria in the water is filtered out so that, in theory, by the time the water reaches a watercourse it presents no environmental or health hazard.
However, environmental concerns are resulting in stricter legislation and sewage treatment systems are becoming more popular.
In a sewage treatment system, wastewater and sewage are fed into a primary tank where the solids settle and the remaining liquor flows into a secondary biozone chamber. Here, a pump aerating the liquor encourages bacterial digestion of organic matter, which breaks it down and purifies it.
By the time the effluent water leave the third humus chamber it is 95% clean and suitable for discharge into a watercourse, ditch or land drain, subject to Environment Agency consent.
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