Frequently Asked Questions
How does a sewage treatment plant work?
The way a sewage treatment plant works is relatively straightforward. Wastewater and sewage enter a large settlement tank, where solids sink to the bottom and form ‘sludge’ and liquids flow through to a chamber. A pump airs the waste and promotes friendly bacteria to condense the organic matter, breaking it down and purifying the water. When the water leaves the final chamber, it’s more than 95% clean – meaning it can be safely dispersed into local ditches or soakaway systems, providing consent has been given from the environmental agency.
Which size sewage treatment plant is best?
Sewage treatment plants come in a variety of sizes – ranging from 5,950 Litres to 184,000 Litres. The size you need often depends on the size of your property, how many bedrooms you have and the number of people that will use the treated water (both now and in the future). For example, a single dwelling with up to 12 people will benefit from a smaller sewage treatment than a group of houses with 13 occupants or more between them. If you’re unsure, our team at Cotterill Civils are always on hand to help and will happily guide and advise you in making the right choice. Simply give us a call on 0121 351 3230.
Are sewage treatment plants worth the investment?
Though we might be biased, we believe sewage treatment plants are a worthwhile investment for anyone not connected to the main drainage network. Whilst they work similarly to septic tanks, they use a mechanical system to pump oxygen to the microorganisms. This allows them to treat effluent more effectively, so it can be discharged directly into flowing water. Sewage treatment plants are a moderate investment, but they generally work out cheaper to run, long term. Unlike other sewage systems, they don’t need to be emptied as frequently, helping to save money on maintenance. To find out more about sewage treatment plants and how they can benefit you, get in touch with our team at Cotterill Civils.
How often should a sewage treatment plant be emptied?
In most cases, a sewage treatment plant will only need emptying once a year to ensure it’s functioning correctly. This is great for keeping your maintenance costs to an absolute minimum. However, if your system is larger and used frequently, it may need desludging more often to ensure you don’t run into any technical issues. If you’re unsure how much maintenance your sewage treatment plant needs, don’t hesitate to talk to the team. We’re always on hand and will gladly advise you. We can even provide tips to help prolong the lifespan of sewage treatment plants.