Reclaimed water wetland ecological purification system

Abstract

The invention belongs to the technical field of sewage treatment and relates to a wetland ecological purification system of reclaimed water. A reclaimed water pipeline is connected with a water inlet of a filtering fish ecological pond, a water outlet of the filtering fish ecological pond is connected with the water inlet of a horizontal subsurface flow constructed wetland, the water outlet of the horizontal subsurface flow constructed wetland is connected with the water inlet of a vertical subsurface flow constructed wetland, the water outlet of the vertical subsurface flow constructed wetland is connected with the water inlet of a physical absorption zone, and the water outlet of the physical absorption zone goes to a river; submerged plants are planted at the bottom of the filtering fish ecological pond, filtering fishes are bred in the filtering fish ecological pond, and emergent aquatic plants are respectively planted in the horizontal subsurface flow constructed wetland and the vertical subsurface flow constructed wetland; the wetland ecological purification system of reclaimed water can be used for effectively lowering the content of pollutants in sewage effluent, is an effective ecological combined reclaimed water replenishment river deep treatment technology, realizes ecologicalization and reclamation of reclaimed water with low cost, and has great practical application value and promotional value.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a reclaimed water wetland ecological purification system for treating tail water of sewage treatment plants. Background technique [0002] At present, a considerable number of cities are short of water resources, and the scope of water shortage in cities continues to expand, and the degree of water shortage is becoming more and more serious. Measures such as water conservation, protection of water resources, and development of new water sources must be taken to alleviate the water resource crisis. Use urban sewage as the water source, and after proper treatment, it can be reused for industrial water, agricultural water, urban miscellaneous water, environmental water, and supplementary source water, including reuse of recycled water in buildings and building communities. This reclaimed water reuse method is one of the more effective measures to develop non-tra...

AI Technical Summary

Problems solved by technology

[0003] At present, there have been many engineering cases at home and abroad using the combined process of constructed wetlands to treat sewage treatment plant effluent and recharge river channels. The operation of constructed wetlands is prone to matrix clogging over time, mainly caused by some nutrients, microbial metabolites, sewage Suspended solids and plant rotting roots clog the filler pores

In order to reduce the sewage load of constructed wetlands and improve the overall water purification effect of the constructed wetland combination process, there are many cases of combination with stabilization ponds, ecological ponds and other units. Substrate clogging problem

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