Sewage Treatment - Fast Sewage Treatment Plants

The ‘FAST’ sewage treatment system provides an unrivalled combination of access, electrical protection, low audible/visual impact, and high performance, at a competitive price.

The design is based on the established principles of primary settlement, biological oxidation and secondary settlement to produce an effluent to comply with Environment Agency requirements for discharge to a watercourse.

‘Biological oxidation’ takes place in a submerged filter bed, with distribution and aeration being achieved by the use of patented venturis and a small submersible pump - which is the only moving part in the whole system.

Speculative reductions in load are ignored and ‘worst case’ figures adopted to produce a plant fully capable of achieving the required standard. The depth below inlet invert has also been kept to a minimum to reduce the likelihood of encountering difficult ground conditions during installation.

The smallest ‘FAST’ plants are designed to serve one or two houses and are extremely compact. Larger plants can be supplied as single structure units with or without primary settlement capacity, which provides the option of installing a complete treatment plant, or using a filter/secondary settlement unit only to improve the discharge from an existing septic tank.

The plant is installed completely below ground, leaving only the inspection cover(s) visible at the surface. It is virtually silent in operation and with no kiosk or housing remains totally unobtrusive.

'FAST' Sewage Treatment Plant - Operation

Once commissioned the ‘FAST’ plant operates completely automatically; no further adjustments are necessary and the equipment will re-start on its own after interruption of the power supply.

The plant will accept domestic use of detergents, bleach etc. without detriment. However, excessive amounts of oil and grease can cause problems and chip pans/deep fat fryers should not be emptied down the sink. In common with other systems, such items as cotton buds, disposable nappies and sanitary products can cause blockages, and should also be disposed of elsewhere.

'FAST' Sewage Treatment Plant - Maintenance

In keeping with the general design concept, service and maintenance requirements are minimal - de-sludging of the primary and secondary settlement tanks being the only essential task.

Floating material should be removed first, and the tanker hose then lowered to the bottom of the tank and moved around the floor area to remove as much sludge as possible.

Whilst it is quite feasible to de-sludge a tank without completely emptying it, in practice doing so is the only way to ensure that it has been done properly.

De-sludging should be carried out every 3-6 months, depending on the size of the unit, loading and operational experience.

The only moving parts in the entire system are the submersible aeration and secondary sludge return pumps. The venturis have no moving parts at all. Whilst neither require lubrication or routine adjustment, we recommend that they are removed every six months for inspection and cleaning, as necessary.

All control panels incorporate either continuous status indicators, or an alarm, and should be positioned so that they will be seen every day. However, alarms themselves are not infallible and there is no substitute for regular inspection.

We also offer a comprehensive range of service contracts and should be happy to discuss your precise requirements.