Sewage treatment system for artificial wetland primarily

Abstract

The invention relates to a sewage treatment system for an artificial wetland primarily, which comprises a bar screen, a water-collecting tank, a flocculation drug mixing tank, a sedimentation tank, an aeration tank and the artificial wetland connected in turn, wherein the base material of the artificial wetland comprises one or more of sand soil mixture, crushed stone, zeolite, limestone, coal slag, steel slag, blast furnace slag, crushed stone, porcelain granules, melon seed piece and pebble; the water outlet of the sedimentation tank is provided with an overflow weir for yielding water; and a stirring paddle is arranged in the flocculation drug mixing tank. The sewage treatment system greatly reduces the concentration of pollutants entering the sewage in the artificial wetland, and certain pollutants difficult to perform biochemical treatment can also be taken out in a mode of flocculation sedimentation, thus the content of the pollutants entering the sewage in the artificial wetland is reduced so as to reduce the area of the artificial wetland, reduce the sedimentation of the pollutants in the artificial wetland, and avoid the generation of the problems of blockage and the like. The sewage treatment system is mainly adapted to domestic sewage and other similar organic sewage.

Description

technical field [0001] The invention relates to a sewage treatment system, in particular to a synthetic wetland-based comprehensive sewage treatment system combined with various treatment methods, which belongs to the field of environmental protection. Background technique [0002] Since 1804, the British first used sedimentation and filtration technology as a centralized water treatment plant. In 1884, the Americans invented the coagulation, sedimentation, filtration, and chlorine disinfection technology, which has been used for 120 years. There are new discoveries and improvements in treatment, but the treatment process of domestic water basically remains the same, essentially no update and breakthrough. However, the water source to be treated has undergone great changes: the water source a hundred years ago was not polluted due to the underdevelopment of industry and agriculture. Over the past few decades, the development of modern industry, especially the sudden and rap...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a sewage treatment system based on constructed wetlands. The system requires a small footprint, is not prone to problems such as blockage, and can treat sewage with relatively high concentration.

Images