Society, environmental protection and sustainable development have become the key issues of global concern. As one of the important resources for human survival and development, the protection and rational utilization of water resources is particularly important. With the acceleration of urbanization and the expansion of industrial production, the sewage discharge is increasing day by day, which brings great pressure to natural water bodies. In order to effectively meet this challenge, scientific and reasonable sewage treatment facilities and their supporting environmental protection measures came into being.

I. Selection of Sewage Treatment Process

Sewage treatment plant is the core link to realize water purification, and its technical route is directly related to the treatment effect and environmental impact. Common treatment methods include physical methods (such as grid and sedimentation), chemical methods (coagulation and disinfection) and biological methods (activated sludge and MBR membrane). According to the characteristics of influent water quality and the requirements of effluent standards, reasonable selection and optimal combination of these technical means can achieve the purpose of efficient removal of pollutants. At the same time, attention should also be paid to reducing energy consumption, reducing operating costs and ensuring easy operation.

Second, measures to save energy and reduce consumption

1. Using solar photovoltaic panels to supply power to pumping stations can not only save electricity expenses, but also help to save energy and reduce emissions.

2. Control the growth rate of microorganisms by adjusting the air supply in the aeration tank, thus saving power consumption.

3. The organic matter in the residual sludge is recycled for anaerobic digestion to generate biogas, which can be used as a heat source or raw material for power generation.

4. Strengthen daily maintenance management, timely replace damaged equipment to keep it in good condition and avoid unnecessary energy waste.

Third, secondary pollution prevention and control

1. Wastewater containing toxic and harmful substances such as heavy metals must be specially pretreated before entering the main process.

2. Flocculants are added in the process of sludge dewatering to improve the efficiency of solid-liquid separation and prevent fine particles from losing with water flow and causing environmental pollution.

3. Establish and improve the emergency plan system, in case of leakage accident, quickly take action to curb the expansion of the situation.

4. Regularly carry out environmental monitoring, evaluate the quality of surrounding soil and groundwater, and immediately rectify the problems found.

Fourth, the construction of public participation mechanism

Relevant government departments should encourage all sectors of society to actively participate in sewage treatment projects to enhance transparency and credibility. For example, holding an open day to invite the public to visit and understand the sewage treatment process; Set up a suggestion box to collect feedback from people's suggestions; Set up a volunteer team to help publicize the concept of water saving and river protection. In addition, real-time data can be released through the Internet platform, so that everyone can monitor the sewage treatment effect and jointly protect the beautiful home.

To sum up, perfect sewage treatment facilities not only need advanced technology and equipment support, but also need careful and meticulous environmental protection considerations. Only by combining economic benefits with social benefits can we truly realize the goal of sustainable utilization of water resources.