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Biological autotrophic nitrogen removal integrated constructed wetland system

A constructed wetland system and autotrophic denitrification technology, applied in the field of ecological environment protection, can solve the problems of low sewage treatment efficiency and the like

Inactive Publication Date: 2020-12-01
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the deficiencies in the prior art above, the purpose of the present invention is to provide a bioautotrophic denitrification integrated constructed wetland system, aiming to solve the existing problem of low sewage treatment efficiency under high salinity conditions

Method used

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Embodiment Construction

[0022] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terminology used herein in the description of the present invention is only for the purpose of describing specific embodiments, and is not intended to limit the present invention.

[0024] Pollutants produced in the process of mariculture mainly include excrement of b...

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Abstract

The invention provides a biological autotrophic nitrogen removal integrated constructed wetland system which comprises a sulfur autotrophic denitrification wetland subsystem which comprises a first filler and sulfur autotrophic denitrification bacteria; and an autotrophic nitrification wetland subsystem which comprises a second filler and autotrophic nitrifying bacteria, wherein the sulfur autotrophic denitrification wetland subsystem is communicated with the autotrophic nitrification wetland subsystem, and sewage flows in from the bottom of the sulfur autotrophic denitrification wetland subsystem, circulates between the sulfur autotrophic denitrification wetland subsystem and the autotrophic nitrification wetland subsystem, and is discharged until the water quality of the sewage meets a preset standard. Microorganisms on which the system depends are salt-tolerant (or halophilic) microorganisms existing in the mangrove forest wetland system, nitrogen pollutants and organic pollutants in the mariculture sewage can be effectively removed after operation and debugging, and the decontamination efficiency of the wetland is improved.

Description

technical field [0001] The invention relates to the technical field of ecological environment protection, in particular to an integrated constructed wetland system for biological autotrophic denitrification. Background technique [0002] Mariculture wastewater is rich in nitrogen and phosphorus, which is an important reason for the eutrophication of water bodies. Taking Guangdong Province of my country as an example, in 2008, the amount of nitrogen discharged from aquaculture in the coastal waters of Guangdong Province was as high as 170kt, the discharge of phosphorus was as high as 30kt, and the discharge of COD (Chemical oxygen demand) was as high as 360kt. The contribution rate of non-point source pollution from marine aquaculture has reached 25%. , and there is a clear correlation between the breeding area and the offshore polluted area. [0003] Due to the differences in the breeding environment, methods and forms of sewage discharge, the sewage treatment methods are co...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C02F3/32C02F3/30
CPCC02F3/34C02F3/345C02F3/32C02F3/302C02F2203/006C02F2209/22C02F2301/046C02F2209/08C02F2209/14C02F2209/15
Inventor 付贵萍赵林胡章立
Owner SHENZHEN UNIV
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