When would a sewage treatment plant be necessary

If no mains sewer is available to effectively treat waste,then a sewage treatment plant offers the ideal solution. Here at BKP, we are able to offer a comprehensive household waste management service, which includes the servicing of sewage treatment plants.

Designed to separate solid waste from liquid, and then treatthe liquid so the quality is good enough for it to be discharged into afree-flowing watercourse, ditch or soak-away – a sewage treatment plant isgenerally used by homeowners, in place of a septic tank or a cesspool.

What Are SewageTreatment Plants? How Do They Work?

A sewage treatment plant is a system that generallycomprises of a one-piece vessel that has three main functions. These functionsare a primary settlement tank, biozone chamber and a humus chamber:

The Primary Settlement Tank is very similar in its function to a septic tank; namely, it allows solids and liquids to separate, as the liquid discharges into a chamber – in this case, the liquid is released into the Biozone chamber. It should be noted that any existing septic tanks can be used alongside a biozone and a humus chamber to cut down on installation costs.


TheBiozone Chamber provides the perfect environment for the ‘goodbacteria’ (that naturally occurs and breaks down the waste) to populate and goabout its job. The chamber is packed with specialised materials that give thebacteria a good surface area to stick and grow. As the chamber is filled withthe settled liquors given by the settlement tank, the good bacteria (oftenknown as biomass) will digest organicmatter, purifying the water to a high standard before draining. The biomassneeds two things in order to survive and grow; air and food. In order toensure that they are able to have both of these, there are three main ways inwhich you can ensure this:

  • 1. Submergethe biomass in the settled liquids and ventilate the liquid by using pumps.
  • 2. Pumpthe liquid up and over the material of the chamber’s interiors (of which thebiomass is stuck to).
  • 3. Makeuse of rotating discs that are half-submerged in the liquid (to provide thebiomass with food) with the other half being up in the air for the oxygen. Thismethod is known as RBCs – rotating biological contactors.·

The Humus Chamber accepts the treated sewage, allowingfor any existing solids to settle out before discharge. This chamber is verystill and has sloped walls that are specially designed to allow solids to slidedown to the bottom to dissipate.

It’s vitally important tonote that The Environment Agency are the only governing body that is legallyable to grant consent for waste materials to be discharged and this permissionhas to be sought in writing. Consent todischarge applications can take up to three months to be approved and underno circumstances should a new system be installed until permission is granted.

Servicing and Maintaining Your Waste Treatment Plant

Servicing and Maintaining Your Waste Treatment Plant.

We would recommend that atthe very least, any waste treatment plants should be checked, serviced andcleaned twice a year. Common issues that may arise from apoor-functioning waste treatment plant, include:

  • · Trippedpumps that cause the biomass to die from lack of air. This lead to a poor(non-existent) breakdown of the waste matter inside of the tank, potentiallyleading to pollution.
  • · Achemical overdose that similarly, kills off the biomass.
  • · Anoverloading of the plant, which is caused by too much flow entering the system.
  • · Thesystem not reaching its consent, caused by the strength of the waste matter(that enters the system) being stronger than what the plant was originallydesigned for.

It’s important to note thatdue to the effects that a malfunctioning sewage plant has on the environment,under no circumstances should any tanks be emptied or cleaned without thepresence of a waste management professional /service engineer. As a result ofthe environmental effects caused by malfunctioning sewage treatment plants, the client could face prosecution.

Choose BKP For Sewage Tank Maintenance.

As part of ourall-encompassing waste management service, we at BKP are able to offer ahigh-quality maintenance service for any sewagetreatment plants you may have. Being a versatile and high-skilled wastemanagement company with over half-a-century of industry experience, we haveattained an unbeatable insight into the changing technologies, trends andlegislations, enabling us to be in a position to offer our customers the mostwidespread service available.

Our service is fullyaccredited by the InternationalOrganisation for Standardisation (ISO), as we hold certifications inenvironmental control and quality managements; underlining our skills andcommitment to waste management. We also regularly review and update our wastemanagement strategies, which provide all our clients – be they a homeowner orlarge business – with a complete, custom service that is designed to suit theirneeds and expectations that they may have. If you would like to find out moreon what our clients have to say about our service, please feel free to visit our testimonials page.

As part of our commitment toprovide a client-focused service, we constantly look to improve the measureswith which we can improve the overall experience for our customers. This is whywe have recently introduced a forwarddiary system that allows you to automatically book your sewage treatmentplant service – cutting down on the time it will take out of your day in usingour service.

A Complete Waste Management Service From BKP.

If you require any furtherinformation on our maintenance and servicing of sewage treatment plants, or in fact, on any of our waste managementservices – please don’t hesitate to get in touch with us today. You can give usa call on 0800 376 5004 or you cansend an e-mail enquiry to sales@bkpgroup.com.