Sewage treatment program and measures

Legal analysis: by analyzing the quality of sewage and wastewater, the sewage entering the wastewater treatment plant mainly includes suspended SS, organic dyes CODCR, inorganic nutrients N/P and so on. Activated sludge method is the most economical and effective method for urban wastewater treatment. Wastewater treatment plants widely use the traditional activated sludge treatment process, which can effectively treat BOD, COD and SS. But this process has technical limitations for the removal of nitrogen and phosphorus from wastewater. For the removal process of nitrogen and phosphorus, the main sewage treatment method using sewage denitrification and phosphorus removal process.

In the sewage nitrogen and phosphorus removal process treatment, there are usually biological treatment method and physicochemical method of two processes. Physicochemical method mainly exists in the consumption of large amounts of drugs, sludge production, sewage treatment operating costs are relatively high shortcomings. The traditional activated sludge method of pollutant removal is mainly through microbial culture and biological adsorption for decomposition and metabolism, to achieve the effect of sewage treatment.

Legal basis: "urban drainage and sewage treatment regulations" Article 6 The State encourages the adoption of franchising, government purchase of services and other forms to attract social capital to participate in the investment, construction and operation of urban drainage and sewage treatment facilities. People's governments at or above the county level to encourage and support scientific and technological research on urban drainage and sewage treatment, promote the application of advanced and applicable technologies, processes, equipment and materials, and promote the recycling of sewage and the resourceful use of sludge and rainwater, and improve the capacity of urban drainage and sewage treatment.