Method for the collection and ecologic treatment of domestic sewage of villages and towns in plain water network region

Abstract

A method for the collection and ecologic treatment of domestic sewage of villages and towns in plain water network region comprises the following steps: constructing ecologic concrete wall along creeks or shores of lakes and ponds so as to form ecologic regulation ditches with the shores, and enabling peasant households living along the shores to drain domestic sewage into the ecologic regulationditches taking the village or town as a unit; leading part of the sewage to pass ecologic concrete wall with filtration entrapment and biological degradation functions for filtration entrapment and biological degradation, so as to remove pollutants; planting calamus, thalia dealbata and other natural aquatic plants in the ecologic regulation ditches, so that part of the sewage is degraded by the ecologic regulation ditches with an automatic oxygenation function to purify water; and ensuring that outlet water enters into the creeks or rectangular purification floating islands of the lakes and ponds, as well as landscape floating islands planted with canna, eichhornia, rush, calamus, cyperus alternifolius, loosestrife, arundo donax var, versicolor, and other aquatic plants in clusters for deep purification. The invention can treat the domestic sewage of scattered villages and towns under the premise that a sewage collection pipe network and a sewage collection system are not constructed, and has the characteristics of sound effect, low running cost, maintenance convenience, remarkable ecologic benefits.

Description

technical field [0001] The invention belongs to the technical field of domestic sewage treatment in villages and towns, and in particular relates to the collection and ecological treatment of domestic sewage in plain water network areas. Background technique [0002] Villages and towns in plain water network areas generally live scattered along the banks of rivers or around lakes and ponds. Domestic sewage is discharged into nearby rivers or lakes, causing serious pollution of rivers and lakes. Some rivers and lakes have lost their original functions. , becoming a pollution-receiving pool, and the eutrophication of the water body is serious. The main characteristics of domestic sewage in villages and towns in plain water network areas are as follows: (1) For thousands of years, rural households have lived scattered and scattered sewage nearby, resulting in difficulties in the construction of sewage collection pipe networks and sewage collection systems in the process of rura...

AI Technical Summary

Problems solved by technology

The main characteristics of domestic sewage in villages and towns in plain water network areas are as follows: (1) For thousands of years, rural households have lived scattered and scattered sewage nearby, resulting in difficulties in the construction of sewage collection pipe networks and sewage collection systems in the process of rural environmental consolidation; (2) Sewage The composition is complex, containing high human and animal feces and urine, high nitrogen and phosphorus content, generally no toxic substances, and contains a large number of bacteria, viruses and parasite eggs; (3) The sewage discharge is small, intermittent discharge, and the coefficient of variation is large (4) The concentration of pollutants is low, the sewage is highly biochemical, and the water quality is turbid, dark in color and has a foul smell

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