Domestic Sewage Treatment
Sewage treatment is the process of removing contaminants from wastewater by physical, chemical, and biological processes. Its objective is to produce a treated effluent and a solid waste suitable for discharge or reuse back into the environment.
Domestic Dwellings
For Domestic Dwellings without mains drainage there is a cost effective, low maintenance solution. The VSM (versatile submerged media) submerged-aeration sewage treatment plant offers straightforward installation with high quality treatment.
The VSM plant is installed completely below-ground with one 450mm lockable manhole cover, flush with the ground, present for access. There are no mechanical or electrical parts inside the plant and a quiet, all-weather, reliable, low consumption air blower supplies oxygen into the plant from above-ground.
The VSM Process
The VSM plant comprises three integral chambers:
1. A primary chamber which simulates the work of a septic tank allowing solids to settle and scum to float
2. A treatment zone where random plastic media supports colonies of bacteria which are provided with air and `breakdown` the sewage effluent
3. A final settlement chamber that clarifies the treated effluent before it is discharged to a watercourse or soakaway as specified by the Environment Agency Consent to Discharge (link) documentation.
Larger Applications
Over the last two and a half decades, WCI has designed many waste water treatment schemes, addressing multiple dwelling, and industrial waste water applications such as golf and country clubs, racecourses, housing developments, office complexes and hotels.
All systems are bespoke and as we design and manufacture our own plants, unusual or difficult applications can be easily accommodated. Each system is designed for our individual clients needs and can include reed bed (link) treatment for secondary or tertiary applications.
Below are a couple of case studies:
> Midlands UK
An International Company employing 800, including a busy canteen, discharging to a watercourse with a consent of 10 mg/l Ammonia as N. Magistrates had fined the Company £28,000 for breaching their treatment quality. WCI installed pre-treatment, aeration and extended Ammonia-stripping facilities. The maintenance staff are fully involved in understanding both the design and monitoring. Daily monitoring of the treated effluent has now moved to weekly testing and at no stage has the Ammonia reached 2 mg/l as N. WCI are addressing Phase 2 in 2008.
> South East UK
A Large hotel with over 80 bedrooms and 50 support staff, with an existing pumped application to a main sewer. After taking levels throughout a 3 km heath land, and discussions with Natural England, WCI installed a gravity pipe line under an SSSI. The seed bank was saved, and a 40 year problematic pumping situation was instead served by gravity. Grease traps were installed along with a water harvesting system.
Contact WCI now on 01984 623404 to discuss your private sewage treatment system options and arrange a site visit (free for those situated within 50 miles of Wiveliscombe, otherwise there will be a charge for mileage only).