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Device for restoring eutrophic water

A eutrophication and water body technology, applied in the field of water pollution control, can solve the problems of short survival time of microorganisms, high cost of use, and difficulty in marketing, and achieve low production raw materials, long service life, good economic benefits and social benefits. benefit effect

Active Publication Date: 2015-06-03
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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Problems solved by technology

[0003] The use of ecological-biological restoration technology is a new technology for in-situ treatment of eutrophic water bodies. It uses plant absorption or microbial life activities to realize the transfer, transformation and degradation of pollutants in water, mainly including biofilm methods, aquatic plant systems, However, these methods have problems such as difficulty in marketing, short survival time of microorganisms in water, and high cost of use.

Method used

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  • Device for restoring eutrophic water

Examples

Experimental program
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Effect test

Embodiment 1

[0054] Example 1: In-situ restoration test of static eutrophic pond (Yixing, Jiangsu)

[0055] The experimental site is located in a chemical industry zone in Yixing City, Jiangsu Province, with a pond area of ​​approximately 1000m 2 , The source of sewage is domestic sewage in the living area.

[0056] Firstly, use sweet potato wastewater to ferment 500L of Rhodococcus on a large scale to make the number of viable bacteria reach 1.0×10 9 CFU / ml or more, put it into the shower tank, open the sprayer in the 100,000-class clean room, spray the rhodococcus fermentation liquid on the soft microbial filler about 80cm long, and spray until the adsorption capacity of the filler is saturated (the lower end is dripping Appropriate). It is sent to a vacuum drying chamber through a closed conveying device, and the temperature of the drying chamber is 38° C., and continuous drying is performed for 10 hours to prepare a rhodococcus carrier.

[0057] Then, the Rhodococcus carrier is connected to ...

Embodiment 2

[0059] Example 2: In-situ restoration test of eutrophication river (Beijing Liangshui River)

[0060] The experiment is located in the upper reaches of the Xiaohongmen Sewage Treatment Plant of Liangshui River. The demonstration area is about 200 meters long and the river is 40-50 meters wide. The water quality of the river is inferior to five categories.

[0061] First, fix two nylon ropes with a length of 50 m below the water surface 5 cm in parallel and keep parallel tensioned; then, fix the device for repairing eutrophic water every 5 m along the direction of the nylon rope. Finally, the device for repairing the eutrophic water body is installed every 10m along the river length.

[0062] The experiment began in July 2014, and the concentration of pollutants in the river water body was COD=80-100mg / L, TN=9-15mg / L, and ammonia nitrogen=5-10mg / L. After 3 months, the concentration of pollutants in the water body drops to COD=40-50mg / L, TN=5-10mg / L, and ammonia nitrogen=3-7mg / L. The ...

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Abstract

The invention discloses a device for restoring eutrophic water. The device comprises two circular support skeletons and a plurality of fixed strips which are connected in series with rhodococcus carriers, wherein the heads and the tails of the fixed strips are fixedly connected with the two circular support skeletons respectively, a plurality of division strips are arranged on one circular support skeleton to enable the circular support skeleton to be divided into a plurality of square grids, and an aquatic plant is planted in each square grid; a buoy is also fixed to the circular support skeleton with the division strips. The device for restoring the eutrophic water is capable of fully exerting respective advantages of microorganism and plant restoration, constructing a composite plant-microorganism restoration system which takes a microorganism system as a core (an underwater part) and is assisted with the plant restoration system (a water surface part), utilizing the stereoscopic structure of the water with full load and efficiently purifying the eutrophic water.

Description

Technical field [0001] The present invention relates to the technical field of water pollution control, and in particular to a device for repairing eutrophic water bodies by using plant-microbes. Background technique [0002] At present, the eutrophication of water bodies in my country is relatively serious, especially in lakes, rivers and wetland systems with small water flow. The main reasons are ammonia nitrogen, phosphorus, hydrogen sulfide, chemical oxygen demand (COD), and biochemical oxygen demand (BOD). ) Excessive pollutants. Compared with conventional biological treatment units (centralized treatment sewage plants), systems such as lakes, rivers, and wetlands have the characteristics of large water volume, long residence time in the water, and wide scattered areas. It is urgent to develop low-cost bioremediation technologies to achieve in-situ Reduction of pollutants and restoration of ecological functions of water bodies. [0003] The use of ecological-bioremediation te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32C02F3/34C12N1/20C12N11/08C12R1/01
Inventor 庄绪亮徐圣君庄国强白志辉孙海曙
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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