What are the problems in rural sewage treatment?

With the rapid growth of China's economy, the acceleration of urbanization, the continuous improvement of rural living standards and the development of rural livestock and poultry breeding, aquaculture and agricultural and sideline products processing industry, the amount of domestic sewage and wastewater in towns and villages has increased sharply. Data show that more than 8 billion m3 of domestic sewage is produced in rural areas of China every year, but 96% of villages have no drainage channels and sewage treatment systems, and domestic sewage is discharged at will. However, most of these sewage are directly discharged into rivers and lakes without any treatment, which makes the water pollution more and more serious, and the public's voice for strengthening control and governance is getting higher and higher.

Jia Wei Environmental Protection has found that rural sewage generally has the following characteristics by summarizing the construction experience of rural water treatment projects for many years:

● Water treatment facilities are in a state of lack, and with the increase of water consumption, sewage discharge is increasing;

● Sewage comes from kitchen waste water, washing waste water, bathing waste water and toilet waste water, with wide sources, low pollutant concentration and great changes;

● Rural residents live in scattered areas, and it is difficult to treat sewage uniformly.

According to the characteristics of rural sewage, environmental protection in Jia Wei follows the following principles in engineering design:

● Comply with national technical specifications and policy requirements;

● According to local conditions, step by step and classified guidance;

● Reduction, recycling and harmlessness;

● The combination of decentralized control and centralized control, the combination of pollution control in towns and surrounding rural areas, and the combination of rural domestic pollution control and agricultural production;

Low investment cost, low maintenance cost, low operation cost, wide radiation area and simple operation;

● Make full use of the pollution control facilities that have been built, and do not engage in redundant construction.

Environmental protection in Jia Wei has realized that rural sewage has a wide range of sources, and the environmental pollution caused by it is systematic. The treatment of sewage or the comprehensive treatment of rural environment needs systematic thinking, and the subsystem should be integrated into the overall environmental treatment for engineering design. In many years of engineering practice, Jia Wei Environmental Protection has formed a relatively systematic and comprehensive environmental management system, which has produced a good reputation in engineering practice.