Combined multi-level ecological unit system for deeply treating secondary effluent of sewage plant

A technology of secondary effluent and advanced treatment, applied in the field of energy and environmental engineering, can solve the problems of complex management, high treatment costs, high operation and maintenance costs, and achieve the effect of improving purification efficiency and reducing operating energy consumption.

Inactive Publication Date: 2016-08-17
无锡城建发展集团有限公司 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the commonly used tail water advanced treatment methods mainly include activated carbon adsorption method, membrane separation method and advanced oxidation method. High disad

Method used

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  • Combined multi-level ecological unit system for deeply treating secondary effluent of sewage plant

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The tail water COD concentration of a sewage treatment plant is 25-35mg / L, the TN concentration is 10-15mg / L, the ammonia nitrogen concentration is 0.5-2.5mg / L, and the TP concentration is 0.2-0.5mg / L, and the system of the present invention is used for treatment :

[0037] The sewage is collected through the water distribution tank and enters the ecological pond. The ecological pond is 1.5m long * 0.7m wide * 1.5m high. There are three ecological floating islands on the water surface of the ecological pond, and 25 strings of three-dimensional elastic fillers are suspended under each ecological floating island , each string of three-dimensional elastic fillers contains 10 fillers, and the length of each string of three-dimensional elastic fillers is 1.0m. There are also two baffles in the ecological pond. The setting of the two baffles can deflect sewage and increase the contact between microorganisms and water bodies area, strengthen the decomposition of organic matter...

Embodiment 2

[0040] The tail water COD concentration of a sewage treatment plant is 25-35mg / L, the TN concentration is 10-15mg / L, the ammonia nitrogen concentration is 0.5-2.5mg / L, and the TP concentration is 0.2-0.5mg / L, and the system of the present invention is used for treatment :

[0041] The sewage is collected through the water distribution tank and enters the ecological pond. The ecological pond is 1.5m long * 0.7m wide * 1.5m high. There are three ecological floating islands on the water surface of the ecological pond, and 25 strings of three-dimensional elastic fillers are suspended under each ecological floating island , each string of three-dimensional elastic fillers contains 10 fillers, and the length of each string of three-dimensional elastic fillers is 1.0m. There are also two baffles in the ecological pond. The setting of the two baffles can deflect sewage and increase the contact between microorganisms and water bodies area, strengthen the decomposition of organic matter...

Embodiment 3

[0044] The tail water COD concentration of a sewage treatment plant is 25-35mg / L, the TN concentration is 10-15mg / L, the ammonia nitrogen concentration is 0.5-2.5mg / L, and the TP concentration is 0.2-0.5mg / L, and the system of the present invention is used for treatment :

[0045] The sewage is collected through the water distribution tank and enters the ecological pond. The ecological pond is 1.5m long * 0.7m wide * 1.5m high. There are three ecological floating islands on the water surface of the ecological pond, and 25 strings of three-dimensional elastic fillers are suspended under each ecological floating island , each string of three-dimensional elastic fillers contains 10 fillers, and the length of each string of three-dimensional elastic fillers is 1.0m. There are also two baffles in the ecological pond. The setting of the two baffles can deflect sewage and increase the contact between microorganisms and water bodies Area, strengthen the decomposition of organic matter...

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Abstract

The invention discloses a combined multi-level ecological unit system for deeply treating secondary effluent of a sewage plant. The system sequentially consists of a water distribution tank, an ecological pond, a secondary constructed wetland and a submerged plant pond. When the system runs, tail water of a sewage treatment plant sequentially passes through the ecological pond, a subsurface flow wetland, a surface flow wetland and the submerged plant pond, and is purified under the joint action of a filler-microorganism-plant system, and effluent is high in water quality and stable. The system has the advantages of capability of efficiently removing nitrogen and phosphorus, low capital construction cost, no power consumption, convenience for subsequent maintenance and operation and the like, and has a landscaping value, and the aim of deeply treating the effluent can be fulfilled.

Description

technical field [0001] The invention relates to a multi-stage ecological unit combination system for advanced treatment of secondary effluent of a sewage plant, belonging to the technical field of energy and environmental engineering. Background technique [0002] In recent years, with the continuous improvement of the centralized treatment rate of urban sewage and wastewater, the adjustment of industrial structure and the development of industrial intensification, the shortage of water resources and the problems of water environment have become increasingly prominent. In order to curb the deteriorating trend of the water environment, the state and government departments at all levels continue to increase investment in sewage treatment facilities. By the end of 2011, my country had built and put into operation 3153 sewage treatment plants, with a sewage treatment capacity of 1.36×10 8 m 3 / d, but my country's water resource scarcity and water pollution problems are still se...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F101/16
CPCC02F9/00C02F3/32C02F2003/001C02F2101/105C02F2101/16C02F2203/006C02F2301/08
Inventor 朱光灿张伟李海妮黄晓峰刘晋
Owner 无锡城建发展集团有限公司
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