Combined method for restoring eutrophicated water body on basis of SMFC (sediment microbial fuel cell) and filamentous green algae

A large-scale filiform, joint restoration technology, applied in chemical instruments and methods, biochemical fuel cells, biological water/sewage treatment, etc., to achieve the effect of strengthening the sense of inhibition, benefiting the efficiency of electricity production, and preventing secondary pollution

Inactive Publication Date: 2015-12-16
TIANJIN UNIV
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Problems solved by technology

At the same time, in the future, it may replace the role of chlorine pre-oxidation and deactivation of algae cells in sewage treatment plants

Method used

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  • Combined method for restoring eutrophicated water body on basis of SMFC (sediment microbial fuel cell) and filamentous green algae
  • Combined method for restoring eutrophicated water body on basis of SMFC (sediment microbial fuel cell) and filamentous green algae
  • Combined method for restoring eutrophicated water body on basis of SMFC (sediment microbial fuel cell) and filamentous green algae

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Embodiment

[0024] Example: For the construction of rural ecological ditches or river courses, or the improvement of the water quality of eutrophic water bodies in rural ditches or river courses, experimental facilities were built. like figure 1 As shown, the anode 7 is buried in the sediment 8 of the ditch or the river, and the depth from the mud-water interface is about 3cm. The material of the anode 7 can be: graphite, carbon felt, carbon cloth and other materials. The cathode 2 is attached to the inner slope 5 of the ditch or the channel and is completely immersed in the water body 6. The cathode 2 can be made of graphite, carbon felt and carbon cloth, etc. In addition, the cathode 2 is preferably coated with a platinum carbon catalyst. An in-situ water quality monitoring instrument is selected as the smallest power consumer 1, and the in-situ water quality monitoring instrument 1 is connected in series between the cathode 2 and the anode 7 through the wire 3. The large filamentous g...

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Abstract

The invention discloses a combined method for restoring a eutrophicated water body on the basis of SMFC (sediment microbial fuel cell) and filamentous green algae. The method comprises the following steps: adopting a carbon material as an anode and a cathode; burying the anode into a deposit of a ditch or river course, and attaching the cathode to the inner slope surface of the ditch or river course; connecting a low-power current consumer between the cathode and anode; and finally, inoculating filamentous green algae on the cathode surface. The system can generate electric energy on the basis of the SMFC while decomposing organic pollutants in the deposit by using microbes, and the inorganic carbon generated by organic matter decomposition is used for growing the filamentous green algae. The filamentous green algae have high removal effects on nitrogen and phosphorus in water, and have very high allelopathy inhibiting actions on microalgae capable of forming water bloom. The filamentous green algae are subjected to photosynthesis to generate abundant oxygen, thereby being beneficial to the electricity generation efficiency of the SMFC and increasing the dissolved oxygen of the water body. Besides, the filamentous green algae can be immobilized, separated and recovered more easily than the microalgae, and can not easily generate secondary pollution.

Description

technical field [0001] The invention relates to restoration of an ecological river course of a water conservancy project, in particular to restoration of a eutrophic water body of a ditch or a river course. Background technique [0002] my country produces a large amount of domestic and industrial sewage every year, and many sewages are discharged into lakes and rivers to make them eutrophic. The eutrophication of rivers and lakes will cause algal blooms to break out in the water body, and it will stink, which will seriously deteriorate the water body. The restoration of eutrophic water body is a problem that has not been solved for a long time in the field of water pollution prevention and control. At the same time, the inhibition of the growth of microalgae in river and lake water bodies has not been effectively solved, resulting in the increasing frequency of surface water blooms in my country. [0003] Sediment Microbial Fuel Cell (SMFC, Sediment Microbial Fuel Cell) is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C02F3/32H01M8/16
CPCY02E60/50Y02P70/50
Inventor 翟洪艳季民刘伯约陈鑫露汪绍波
Owner TIANJIN UNIV
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