A Guide to Domestic Sewage Treatment Plants

While the majority of the UK population depends on the main sewage system to dispose of waste, approximately 5% of households rely on off-mains solutions due to their rural locations. For these situations, there are various options available, including septic tanks, cesspools, or domestic sewage treatment plants. However, the latter is often considered the most practical and preferred choice. Even though domestic sewage treatment plants are highly effective, there are several factors to consider before installation. This article provides an overview of how they work and the key decisions you'll need to make before proceeding. Key Takeaways: - Domestic sewage treatment plants are commonly chosen for rural properties not connected to main sewage systems. - These plants treat sewage waste through sedimentation, aeration, and decontamination processes. - All UK waste water treatment plants must comply with EN 12566-3 2005 certification standards, and planning permission may be required. - Regular maintenance is crucial to ensure proper functioning and compliance with environmental regulations. One of the primary reasons domestic sewage treatment plants are favored is their cost-effectiveness in the long run, despite higher initial costs. They produce cleaner effluent compared to septic tanks, which typically need more frequent emptying. Treatment plants also contribute to a more eco-friendly environment by reducing ammonia emissions and producing nearly 95% clean effluent. How Treatment Plants Operate: Domestic sewage treatment plants operate in three stages. Initially, sedimentation separates solid waste from liquid waste using gravity. The remaining sludge is stored until professional servicing takes place, while the liquid waste moves to the aeration chambers. Here, compressed air increases oxygen levels, promoting bacteria growth that helps disinfect the waste. After decontamination, the bacteria settles and is removed, leaving treated water ready for discharge. Regulations and Permits: Before installing any sewage treatment facility, it's essential to be aware of relevant regulations. In the UK, all treatment plants must meet EN 12566-3 2005 standards. Additionally, planning permission might be necessary, especially if discharging into natural water sources. Contacting your local authority is advisable to confirm any necessary permits. Proper Sizing: Selecting the correct size for your sewage treatment system is vital. Consider the number of people and the size of the property generating waste. For residential properties, assume a minimum of five people per house with up to three bedrooms, adding one person for each additional bedroom. For larger groups or commercial settings, adjust calculations accordingly, always consulting with suppliers or manufacturers for tailored advice. Location Selection: After determining the appropriate size, plan the location carefully. Ensure the plant is at least seven meters from property foundations and ten meters from watercourses. Accessibility for maintenance is also crucial, and positioning the plant downhill can enhance treatment efficiency. Equipment Requirements: Assess the number of pump stations, outfall requirements, and depth of underground pipes. An electricity source must also be available. Installation: Professional installation is critical due to potential risks to residents, properties, and the environment. Steps include soil testing, calculating pipework needs, connecting to a power supply, and excavating for installation. Nutrient Neutrality: Achieving nutrient neutrality ensures developments do not increase phosphate and nitrate levels, protecting aquatic life. Adhering to installation guidelines prevents environmental damage. Ongoing Maintenance: Regular maintenance ensures continued functionality. Typically, servicing is recommended annually, involving waste removal and checking microbial presence. Protecting systems from rainwater and avoiding harmful chemicals is equally important. Market-Leading Products: EasyMerchant offers high-quality sewage treatment plants from trusted brands like Harlequin, whose HydroClear plant removes over 96% of pollutants. Our selection includes septic tank systems and treatments with natural enzymes. If you're unsure about the best solution, our customer service team is here to assist. For more information about our products, feel free to reach out. Shop Sewage Treatments: Our product range includes various sewage treatment plants, distribution boxes, vent filters, cesspools, and acoustic vibration reduction units. Each product comes with detailed specifications and pricing options.

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