Sewage Treatment Plants

At Mantair, we are experienced and accredited sewage treatment plant installers. As we’re not tied to any single manufacturer, we provide honest, expert advice to ensure you receive the most suitable solution for your specific site and requirements.

Sewage treatment plants are used in areas of the UK where mains drainage is inaccessible. They provide a modern alternative to septic tank systems. Acting as an independent wastewater treatment system, sewage treatment plants are designed to promote the growth of Aerobic Microorganisms. These Microorganisms degrade the receiving wastewater, producing a treated effluent suitable for discharge to a natural watercourse.

There are various types of sewage treatment plants available in the UK, but these all work on the same principle of developing Aerobic Micro-organisms, which reduce the polluting load in the effluent, followed by settlement to remove any fine solids from the treated effluent. 

This treatment principle for wastewater is the same as the principle used at main sewage treatment works for towns and cities, but on a reduced scale. In most instances, the level of treatment will enable the effluent to be discharged to a ditch, stream or river after approval from the Environment Agency is sought for England and Wales, or SEPA in Scotland.

Sewage treatment plants have been available throughout the UK since the early 1980s. Over the last ten years, there have been substantial advances in the design and manufacture of small sewage treatment plants. This, together with more stringent regulations, has resulted in sewage treatment plants being the preferred option over septic tanks and cesspools for the disposal of wastewater for rural locations.

Sewage treatment plants are typically in the form of ‘single tank’ systems, with the majority of the tank structure being installed below ground with only access covers visible on the surface. The majority of sewage treatment plants operate using an air compressor (air blower). These air compressors are usually housed within a small housing located remotely from the sewage treatment tank.