Integrated domestic sewage treatment system applicable to villages and treatment method thereof

Abstract

The invention discloses an integrated domestic sewage treatment system applicable to villages. The integrated domestic sewage treatment system comprises a solid-liquid feed separation unit, wherein afeed inlet is formed in the solid-liquid feed separation unit; the solid-liquid feed separation unit is connected with a sewage inlet pipeline; an anaerobic treatment unit is arranged at a corresponding position of the lower part of one side of the solid-liquid feed separation unit; a water inlet end of the anaerobic treatment unit is connected with a water outlet end of the solid-liquid feed separation unit; a vertical subsurface flow type constructed wetland and a horizontal subsurface flow type constructed wetland are arranged right above the anaerobic treatment unit; a water outlet end ofthe anaerobic treatment unit is connected with a water inlet end of the vertical subsurface flow type constructed wetland through a pipeline and a suction device arranged on the pipeline; and the water outlet end of the vertical subsurface flow type constructed wetland is connected with a water inlet end of the horizontal subsurface flow type constructed wetland. The invention also discloses a domestic sewage treatment method applicable to villages. The system and the method provided by the invention have the advantage that sewage treatment quality can be improved.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment in the technical field of environmental protection, and in particular relates to an integrated domestic sewage treatment system and a treatment method suitable for villages. Background technique [0002] With the development of economy and society and the improvement of people's living standards, my country's urbanization process continues to accelerate, but the number of rural populations is large, the water consumption in rural areas is also increasing, and the total discharge is large. According to reports, it is estimated that by 2020, my country's rural sewage will be discharged The total amount can reach nearly 30 billion tons. The population in urban areas is concentrated, and sewage can be collected and transported to sewage treatment plants for treatment. However, this method involves a large number of collection pipe networks and is not suitable for rural areas where the populati...

AI Technical Summary

Problems solved by technology

② Large coefficient of variation

③It is more difficult to collect

The discharge of domestic sewage in rural areas is relatively scattered, and most of them have no drainage pipe network, making it difficult to collect

④ The technical and economic foundation in rural areas is weak, lacking funds and professional technical personnel, and it is difficult to guarantee the daily operation and maintenance of sewage treatment facilities

[0005] Chinese patent application (CN105481203A) discloses a domestic sewage treatment system. In the technical solution disclosed in the patent application, the position corresponding to the outlet end of the sewage collection pipe on the pre-sedimentation tank and the overflow pipe on the pre-settling tank are adopted. A grid is set at the corresponding position of the inlet end for solid-liquid separation. This solid-liquid separation structure cannot separate solid-liquid well, and the separated solid part will still carry a large amount of liquid components, which greatly reduces the sewage treatment. ability

Chinese patent (CN204939208U) discloses a circulating domestic sewage purification system. In this patented technology, pipes are used to evenly distribute the anaerobically treated sewage at the bottom of the constructed wetland. The structure is relatively complicated and the distribution of sewage is not uniform enough, resulting in Can not play a good role in purifying sewage

Moreover, in the above-mentioned technologies, after anaerobic treatment, the sewage is sent to the constructed wetland for treatment in an anaerobic or anaerobic state. At this time, the constructed wetland cannot efficiently and thoroughly treat the sewage (adsorption, redox, microbial decomposition, nutrient absorption, etc. )deal with

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