Domestic Sewage Treatment In Rural Areas Xiangjie Five Technical Analysis (chart)

Domestic Sewage Treatment In Rural Areas Xiangjie Five Technical Analysis (chart)

Large volume of water discharged, most of which without treatment directly into rivers and lakes, some lakes are polluted to varying degrees, nearly 60% of the city without sewage treatment plants, rural areas, largely untreated sewage on direct emissions, sewage treatment in rural areas has affected the construction of modern new countryside. Therefore, more and more people in rural environmental pollution concerns. Aiming at the actual situation of domestic sewage in rural areas, introduced a number of rural sewage treatment technologies and measures, expectations for our analysis of sewage treatment in rural areas provide a useful reference.

Papers Keywords: Countryside Life Sewage ; Sewage treatment; filtration purification system; anaerobic biological treatment systems

According to statistics, China's annual waste (sewage) water discharge volume has reached 62 billion tons, most of which without treatment directly into rivers and lakes, nearly a quarter of the lakes are different levels of pollution, there are nearly 60% of the city without sewage treatment plants, rural areas, largely untreated sewage directly discharged, rural domestic sewage treatment in rural areas has affected the modern new building. China is a large agricultural country, large population, shortage of water resources, water resources in China is only 2,200 cubic meters, per capita consumption of the world's 1 / 4, and was listed as one of 13 water-poor countries. 2030 China's per capita possession of water resources from the current 2,200 cubic meters fell from 1700 to 1800 cubic meters, water demand close to water resources development and utilization of capacity, lack of Water Q Problem will become more prominent. Currently, the county in developing a new socialist countryside construction, sewage treatment long way to go.

Domestic sewage treatment in rural areas of the five technology Xiangjie

A rural water Environment Status and characteristics of pollution

(A) The current water pollution in rural areas

Rural water environment is found in the vast rural areas of rivers, lakes, ditches, ponds, reservoirs and other surface water, soil and groundwater bodies collectively. A total of 45,412 towns in China, 739,980 village committees, village 236 927 000 households, rural population of 91,960 people. Dispersed rural population, population and more, there is no sewage collection and treatment facilities, which makes pollution of rural life to become an important factor affecting the water environment. It is estimated that rural domestic sewage generated each year more than 80 million tons, seriously polluting the living environment in rural areas, most rural areas rivers, lakes and other water pollution in general, security is a serious threat to drinking water quality, directly endangering the health of farmers, serious impact on rural areas, sanitation, easily lead to a number of epidemic diseases and the spread. It is estimated that each of rural environmental problems caused by Economy Has more than 100 billion yuan loss, China's rural environment and ecological situation is worrisome.

Decades of reform and opening up, China's agricultural production capacity and achieve an improved greatly. Increasing livestock and poultry rearing families, a large number of livestock and poultry manure did not address the direct discharge of fecal pollution increasing year on year. Data showed that a pig breeding wastewater generated by a person 7 times, while breeding a cow is 22 times. These organisms are untreated, into the ground or into surface water, the water environment, nitrate, hardness, and exceeded the total number of bacteria, a serious threat to the residents of safe drinking water.

(B) the characteristics of rural water

Characteristics of domestic sewage in rural areas: the kitchen cooking water, bathing, washing water and toilet flushing water, the water dispersed in rural areas have no facilities for collection, with the rain erosion, with the surface into rivers, lakes, ditches, ponds , reservoirs and other surface water, soil and groundwater, including a large organic matter content is the main feature.

1. Quality characteristics. (1) rural towns have small populations, are widely dispersed, most have no sewage pipe network; (2) low concentration of domestic sewage in rural areas, changes in large; (3) the majority of the rural nature of domestic sewage or less the same, basic water do not contain heavy metals and toxic substances (but with the improvement of living standard, some sewage may contain harmful heavy metals and toxic substances), with a certain amount of nitrogen, phosphorus, water quality and volatile biodegradability strong; (4 ) different periods of different water quality; (5) poor quality of sewage discharge toilet, but can be used as a fertilizer into the septic tank.

2. Water features. (1) The general volume of domestic sewage in rural areas are relatively small, with the exception of small towns, the rural population living in scattered, relatively small amount of water, sewage generated by a corresponding amount is also small; (2) change coefficient is large, living Law Similar, leading to emission of domestic sewage in rural areas than during the day sooner or later, large, small discharge night, or even stop, the water changed significantly, that is, the state water discharge was discontinuous, with large variations in the characteristics; (3) in the morning, noon, pm has a peak.

3. Disposal system characteristics. Rural areas generally showed extensive sewage discharge. Many rural areas there is no proper sewage disposal system, sewage discharge along the road ditches or road to the nearest body of water. A small number of regions have a sewage disposal system.

Rural domestic wastewater with high organic content, N, P content increased. People unconscious emissions and rain erosion, so a lot of organic matter and N, P and other substances into the lake water, if not dealt with the use, often lead to eutrophication, to the health of people adversely affected.

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