Wastewater Treatment Plant & Septic Tanks in Shrewsbury
Septic Tanks Installation in Shrewsbury and surrounding areas? J&F Drainage has it covered
When it comes to wastewater treatment plants or septic tank installation, J&F Drains are the only company to call.
Septic Tank & Sewage Treatment Plant Services
Our team of sewage tank experts can design, source and install a septic tank system that both meets the needs of your home or business and is compliant with UK regulations.
Under the Environment Agency General Binding Rules, Boreholes and soakaways are not acceptable. Soakaway Creates and Tunnels are also not allowed for septic tanks or any sewage effluent, only for rainwater. All septic tanks whose effluent finds its way into ditches or streams, either directly, or by mistake, have to be replaced with sewage treatment plants as they violate regulations.
Septic Tank Maintenance
All septic tanks require emptying once a year, as a minimum. It may need emptying more, depending on the size of the household or company, or the size of the tank. Septic systems typically only hold 12 months’ sludge storage and if sludge starts to empty into the soakaway soil, it very quickly blocks the air spaces (porosity) in the soil, the effluent cannot soak away, you suffer a soakaway failure and the septic tank fills up, backing up the system.
Regular septic tank maintenance and cleaning reduce the risk of a backed-up system or a soakaway failure.
Wastewater Treatment Explained
Raw sewage is very polluting and all wastewater must be treated in order for it to be environmentally safe.
The three main parameters used to define sewage both as it arrives at a treatment plant (influent) and when it leaves a sewage treatment plant (effluent), are BOD, Suspended Solids and Ammoniacal Nitrogen. Sometimes, Phosphorous is also considered, particularly if the discharge is to a sensitive watercourse or lake, but this is not usually a requirement in the UK.
BOD
One of the main pollutants to consider is BOD, or Biochemical Oxygen Demand.
This measures the amount of oxygen, in Mg/L, required by microorganisms in the sewage to break down its organic matter content. Sewage with a high BOD has high pollution potential if discharged into a watercourse because it causes severe depletion of the oxygen in the water. This kills fish and other aquatic animals which need oxygen to breathe.
Normal domestic sewage generally has a BOD of between 250 and 400 mg/l. This is much too high and sewage treatment must reduce it to a maximum of 20mg/L in the UK to minimize pollution potential. The Environment Agency may require sensitive sites to achieve even lower levels.
A sewage treatment plant cleans and removes contaminants from domestic sewage, using a combination of physical, chemical and biological processes. Typical applications for a water treatment plant include single dwellings, small communities or developments, refurbishments and rural barn conversions. Sewage treatment plants can be placed above or below the ground depending on the type of installation you require.
Septic Tanks – Frequently Asked Questions
How long does septic tank installation take?
The length of time it takes to install a septic tank can vary depending on factors such as the weather and access to the site. The majority of septic tank installations can be completed within a week, but our experts will advise you of a more accurate timeframe once we know more about your requirements.
Will I have to move out during installation?
Not usually. Where possible we install the septic tank with as little disruption to you as possible.
What regulations affect septic tank installation?
There are a number of regulations that will impact the installation of a septic tank and compliance with these regulations is paramount. You can find out more about these regulations on the Government website.
For help with Septic Tanks Installation in Shrewsbury and surrounding areas, contact us!
