Treatment Plants
Sewage Treatment Plants
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Keens have installed many sewage treatment plants from large stately home and estates to well known celebrity’s houses and hotels to small town and country properties.
There are many different types of Sewage Treatment Plants on the market today; we will suggest some guide lines before you decide on your plant.
Before you purchase a plant ensure that it has an Environmental Certificate EN 12566-3 2005 this is required by the Environmental Agency when stating the make of plant on application for Consent to Discharge. It is preferable to ask for the EN test results which should show that the plant as reducing BOD to less that 93% – Suspended solids less than 88% and Ammonical Nitrogen to less than 50%
Questions to ask
What size of sewage treatment plant do I require?
This should be based on the potential occupancy of the property and not the present occupancy
Does it require electricity?
Some plants use more that others as they require pumps to run all the time whilst others only run on demand. There are plants that do not require electricity.
How often should it be emptied?
It is normal for most plants to be emptied annually but this depends on use and the design of the plant.
Does it have a primary settlement tank?
These plants sometimes can expel some odour as gasses can escape through the unit lid, especially when a volume of water is emptied.
Does it rely on internal moving parts?
Sewage is very corrosive and can affect internal moving parts which are expensive to replace.
How thick is the structure of the tank?
Obviously the thicker the stronger and better. You get what you pay for.
What can you see when the sewage treatment plant is installed?
Some plants can be very obtrusive with several lids which show well above ground level, and some have boxes with compressors or timers etc.
How clean is the effluent?
They vary but all we install meet the Environmental Agency requirements. There are many who treat the sewage to a much higher standard. You get what you pay for.
What are the servicing costs?
The servicing period varies depending on the complexity of the plant. Generally it is annually but some can be more often.
What warranty is on the plant?
Damage to a properly installed tank is very rare, but should there be a problem it will probably occur in the first two to three years of installation. Therefore any warranty should cover this period and more.
Can the sewage treatment plant discharge into a ditch or will I need a soakaway?
All plants that have the EN certificate should be suitable to discharge into a ditch or watercourse, Subject to the Environmental Agency Permit to Discharge. Not all plants conform. Septic Tanks must have a soakaway and can not be allowed to discharge into a ditch.
Call us today to discuss your requirements on
01202 82 80 81
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