Method for purifying domestic sewage by using biological membrane band aerator pipe plant filtering frame wetland

Abstract

The invention discloses a method for purifying domestic sewage by using biological membrane band aerator pipe plant filtering frame wetland. A biological membrane band aerator pipe plant filtering frame wetland purifying pond consists of a wetland pond body, a biological membrane band, a micropore aeration mechanism and a plant filtering frame. The domestic sewage enters into the wetland pond body and is attached with the biological membrane band in aerobic environment to form micro-biosphere; oxygen is supplied evenly in water in the pond by the micropore aeration mechanism to recover the ecological balance of the water body and fully bring the degradation of natural living creatures into play, thereby purifying and improving the water quality. The plant filtering framework can further strengthen the sewage purifying function of a system. Filter materials in the plant filtering frame has the physical filtering action on the suspended materials in the domestic sewage and can biochemically degrade pollutant as the growth carrier of microorganism. The root system of wetland plants has very good absorption to substances in the sewage, such as nitrogen, phosphorus, heavy metals, and the like; as the growth carrier of microorganism, the wetland plants also have the landscape action on a sewage disposal system.

Description

technical field [0001] The invention relates to a method for purifying domestic sewage in an artificial wetland, in particular to a method for purifying domestic sewage by using a plant filter frame wetland with biofilm and an aeration tube. Background technique [0002] The general method of traditional constructed wetlands to purify domestic sewage is: use gravel, gravel, soil, etc. as substrates, plant wetland plants in them to form constructed wetlands, and purify domestic sewage through substrate adsorption, microbial degradation and plant absorption. The disadvantages of the above-mentioned methods are that the purification and treatment efficiency of domestic sewage is low, the constructed wetland occupies a large area, and the system management is complex and requires a large amount of management. Moreover, because the suspended solids in the wetland domestic sewage are not effectively removed, the purification load of the wetland domestic sewage is too large, and th...

AI Technical Summary

Problems solved by technology

The disadvantages of the above methods are the low efficiency of purification and treatment of domestic sewage, the artificial wetland covers a large area, and the system management is complicated and the amount of management is large.

Moreover, because the suspended solids in the wetland domestic sewage are not effectively removed, the purification load of the wetland domestic sewage is too large, and the circulating pump is easy to block.

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