Constructed wetland treatment system for treating rural domestic sewage

Abstract

The invention discloses a constructed wetland treatment system for treating rural domestic sewage, and belongs to the technical field of rural domestic sewage treatment. The constructed wetland treatment system comprises a water reservoir, a water channel, plant ponds, a filter tank and an ultraviolet disinfection zone; the rural domestic sewage is collected into the water reservoir, then floatingobjects in water are removed by grilles in the water channel, nitrogen, phosphorus and heavy metal components are absorbed by the plant ponds and phosphorus and ammonia nitrogen are removed by the filter tank, finally poisonous pathogenic bacteria in the water are killed by the ultraviolet disinfection zone, and then the rural domestic sewage flows out. Through arrangement of the water reservoir,the water channel and multiple ecological plant ponds, the domestic sewage sequentially passes through different plant ponds, so that the absorbing and degrading roles and the like of aquatic animalsand plants are fully played to reduce the nitrogen and the phosphorus, the chemical oxygen demand and the like in the sewage, and thus the water purifying efficiency is effectively improved.

Description

technical field [0001] The invention belongs to the technical field of rural domestic sewage treatment, and in particular relates to an artificial wetland treatment system for treating rural domestic sewage. Background technique [0002] With the continuous development of our country's social economy, environmental problems have become increasingly prominent. At present, my country's urban sewage collection mode and treatment technology are relatively mature, but the treatment of rural domestic sewage has just started, and its treatment mode and technology are still in the exploratory stage. There are many differences between rural decentralized sewage treatment and centralized treatment of urban sewage treatment plants. If conventional urban sewage treatment processes, biological turntable processes, anaerobic and aerobic processes, and membrane bioreactor processes are used in rural areas, it is not only economically unaffordable, but also Moreover, it is difficult to rea...

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Problems solved by technology

[0005] The types of plants selected in the above patents are only reeds and wild rice grass, which are single species and difficult to guarantee survival rate, and have low economic value and landscape value, and are easily affected by climate, low efficiency, easy to block, and affected by plant types and growth cycles Larger etc.

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