Purification treatment system for tail water of sewage plant and construction method of purification treatment system

Abstract

The invention discloses a purification treatment system for tail water of a sewage plant and a construction method of the purification treatment system, which belong to the technical field of comprehensive treatment of water environments, and solve the problems of high investment and operation cost, secondary pollution and unsatisfactory purification in the existing tail water treatment mode. The system comprises a water distribution well and a constructed wetland; an aeration device and a submersible sewage pump are arranged in the water distribution well; the output end of the submersible sewage pump is connected with a first water distribution pipe; the first water distribution pipe leads to the constructed wetland; a floral pipe is arranged at the bottom of the constructed wetland and communicated with a water collecting well; the upper portion of the water collecting well is connected with a water outlet pipe; a control valve is arranged on the water outlet pipe;water quality detection equipment is arranged at the front end of the control valve on the water outlet pipe; a submersible pump is arranged in the water collecting well; the output end of the submersible pump is connected with a second water distribution pipe; a nozzle is arranged above the constructed wetland and connected with the second water distribution pipe; and the control valve and the submersible pump are respectively connected with the water quality detection equipment. The system has the advantages of good purification effect, low investment and operation cost, no secondary pollution and high automation degree.

Description

technical field [0001] The invention belongs to the technical field of water environment comprehensive treatment, and in particular relates to a purification treatment system for tail water of a sewage plant and a construction method thereof. Background technique [0002] As my country's urbanization process continues to intensify, a large number of rural populations are pouring into cities, and the environmental pressure brought about by the population problem is also increasing, and the shortage of fresh water resources has become increasingly prominent. At present, the tail water of most sewage treatment plants in my country is discharged to natural receiving water bodies such as rivers, lakes and reservoirs through surface runoff or special drainage channels. Although the effluent standard of the sewage plant has reached the first-class A or first-class B discharge indicators stipulated in the "GB18919-2002 Pollutant Discharge Standard for Urban Wastewater Treatment Plan...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a tail water purification treatment system of a sewage plant to solve the problems of high investment and operation cost, secondary pollution, and unsatisfactory purification in the existing tail water treatment methods

Images