Friday, September 16, 2011

How Cesspools Work

By Jason Restall


Some people inquire, what is the difference between a cesspool and a septic tank? The straightforward answer is that cesspools do not have an outlet pipe, like the septic tanks that will attach to an soak away. Therefore the cesspool is a sealed unit, for this reason the cesspool need to be emptied more frequently. Depending on the usage it may have to be emptied anywhere from every two to twelve weeks. Unlike the septic tank of course there isn t any treatment for the sewage. The cesspool is just a large underground tank that is connected to all waste water outlet pipes from the given accommodation.

There are only two types of cesspools that are used in the uk, domestic and non domestic. The domestic cesspool are generally only used as a final measure, where a sewage treatment plant or septic tank cannot be established. This is normally the case if there cannot be a soak away installed, often this happens when the property does not have enough land, or the ground is not suitable i.e when the ground is mainly clay. The new procedure, brought out by the Environment Agency and the building regulations state that the minimum size for a cesspool has become 18,000 liters (4 1000 gallons), this size cesspool would only cater for a one bed room accommodation. Some property often connect the rainfall downpipes to there septic tanks, however this is not recommended for cesspools as it just fill the tanks up more rapidly and then require more regular emptying. The non domestic cesspools are used only for temporary settlements, such as camp sites, caravan parks, buildingbuilding sites e.c.t

Occasionally there can be a horrendous smell that is emitted for the cesspool, the smell normally goes out through the vent or through the pipework. If you are facing this issue, please do not enter the cesspool to check out the issue. This would be tremendously dangerous as the toxic gases are very powerful and can overcome you in a short time, it has been know to kill individuals!

This situation is normally caused by the bacteria in the cesspool dying, this can happen due to modern cleaning products like bleach and different powders. The best thing to do is to simply add bacteria. The bacteria is often sold depending on the size of your house. The majority of bacteria is simply flushed down the lavatory one time each day over a 3 to 4 day period and typically last for three years taking into account the application of modern cleaning products.

The other question many people ask is what size cesspool do I need for my property. The rules and regulations from British Water state that the capacity should be based on allowing 180 liters of waste water per person per day and that the cesspool should be able to hold that waste for 40-50 days before it requires an emptying. So based on those calculations a 18,000 liters cesspool would be acceptable for two adults living in a one bedroom property, and for every person added you need a cesspool that increases by a minimum of 6800 litres.




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