Sewage Treatment Plants

When would a sewage treatment plant be necessary?

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 treat the liquid so the quality is good enough for it to be discharged into a free-flowing watercourse, ditch or soak-away – a sewage treatment plant is generally used by homeowners, in place of a septic tank or a cesspool.

What are sewage treatment plants, why are they necessary?

A sewage treatment plant is a system that generally comprises of a one-piece vessel that has three main functions. These functions are a primary settlement tankbiozone 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.

The biozone chamber provides the perfect environment for the 'good bacteria' (that naturally occurs and breaks down the waste) to populate and go about its job. The chamber is packed with specialised materials that give the bacteria a good surface area to stick and grow. As the chamber is filled with the settled liquors given by the settlement tank, the good bacteria (often known as biomass) will digest organic matter, purifying the water to a high standard before draining. The biomass needs two things in order to survive and grow; air and food. In order to ensure that they are able to have both of these, there are three main ways in which you can ensure this:

  • Submerge the biomass in the settled liquids and ventilate the liquid by using pumps.
  • Pump the liquid up and over the material of the chamber's interiors (of which the biomass is stuck to).
  • Make use of rotating discs that are half-submerged in the liquid (to provide the biomass with food) with the other half being up in the air for the oxygen. This method is known as RBCs – rotating biological contractors.·

The humus chamber accepts the treated sewage, allowing for any existing solids to settle out before discharge. This chamber is very still and has sloped walls that are specially designed to allow solids to slide down to the bottom to dissipate.

It's vitally important to note that The Environment Agency are the only governing body that is legally able to grant consent for waste materials to be discharged and this permission has to be sought in writing. Consent to discharge applications can take up to three months to be approved and under no circumstances should a new system be installed until permission is granted.

Servicing & maintaining your waste treatment plant

We would recommend that at the very least, any waste treatment plants should be checked, serviced and cleaned twice a year. Common issues that may arise from a poor-functioning waste treatment plant, include:

  • Tripped pumps 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, potentially leading to pollution.
  • A chemical overdose that similarly, kills off the biomass.
  • An overloading of the plant, which is caused by too much flow entering the system.
  • The system not reaching its consent, caused by the strength of the waste matter(that enters the system) being stronger than what the plant was originally designed for.

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

Choose BKP for sewage tank maintenance

As part of our all-encompassing waste management service, we at BKP are able to offer a high-quality maintenance service for any sewage treatment plants you may have. Being a versatile and high-skilled waste management company with over half-a-century of industry experience, we have attained an unbeatable insight into the changing technologies, trends and legislations, enabling us to be in a position to offer our customers the most widespread service available.

Our service is fully accredited by the International Organisation for Standardisation (ISO), as we hold certifications in environmental control and quality managements; underlining our skills and commitment to waste management. We also regularly review and update our waste management strategies, which provide all our clients – be they a homeowner or large business – with a complete, custom service that is designed to suit their needs and expectations that they may have. If you would like to find out more on what our clients have to say about our service, please feel free to visit our testimonials page.

As part of our commitment to provide a client-focused service, we constantly look to improve the measures with which we can improve the overall experience for our customers. This is why we have recently introduced a forward diary system that allows you to automatically book your sewage treatment plant service – cutting down on the time it will take out of your day in using our service.