Sewage in-situ purification system using drainage ditch

Abstract

The invention relates to a sewage in-situ purification system using a drainage ditch. The drainage ditch is divided into a treating ditch and a diverting ditch which are parallel to each other along the longitudinal direction; the front ends of the treating ditch and the diverting ditch are provided with diverting grooves; the front end of the treating ditch is provided with a grit chamber, and the tail end is provided with a sedimentation basin; a contact oxidation pond and an artificial wetland pond are arranged between the grit chamber and the sedimentation basin; and the grit chamber, thecontact oxidation pond, the artificial wetland pond and the sedimentation basin are spaced by a transverse partition wall. The invention can effectively carry out in-situ purification treatment to sewage by using ditch space, realize the continuous treatment and the purification to the sewage and enable the ditches to become a landscape harmonious with surrounding environment. The sewage in-situ purification system can carry out hydraulic drop oxygenation to the sewage by sufficiently using height difference variations inside the drainage ditch, reduce the cost of sewage treatment, does not generate secondary pollution and affect the flood discharge of the drainage ditch and can effectively intercept and remove high-concentration pollutants caused by the flush effect of initial rain.

Description

technical field [0001] The invention relates to a sewage treatment system, in particular to a sewage purification system transformed from existing drainage ditches, and belongs to the field of environmental protection water treatment. Background technique [0002] In the past 20 years, with the continuous improvement of the level of urbanization and the acceleration of urbanization in my country, the population of cities and towns has continued to increase, and the amount of sewage discharge has also increased at a rate of more than 5% per year. At present, the centralized treatment rate of urban sewage in my country is about 50%, but there are still nearly 200 cities, and about 80% of the towns have not built sewage treatment plants, and the problem in the western region is more prominent. The random discharge of domestic sewage seriously pollutes the water bodies near the towns and threatens the daily life and health of residents. [0003] In my country's water pollution ...

AI Technical Summary

Problems solved by technology

However, the single contact oxidation method has a short contact time with sewage, does not make full use of the space of drainage ditches, and requires artificial aeration devices, so it is subject to more restrictions in practical applications.

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