Microbial fuel cell for nitrogen and phosphorus removal of sewage treatment plant and sewage treatment method

Abstract

The invention discloses a microbial fuel cell for nitrogen and phosphorus removal of a sewage treatment plant and a sewage treatment method. The microbial fuel cell comprises a nitrogen and phosphorus removal pool, the nitrogen and phosphorus removal pool is provided with a water inlet and a water outlet, and a nitrogen and phosphorus removal unit is arranged in the nitrogen and phosphorus removal pool; the nitrogen and phosphorus removal unit comprises an iron pole plate and a carbon felt which are sequentially arranged along the water flow direction in the nitrogen and phosphorus removal tank, a denitrification biological membrane is attached to the carbon felt, a collecting hopper and a sludge hopper are respectively arranged below the iron pole plate and the carbon felt in the nitrogen and phosphorus removal tank, and the iron pole plate is electrically connected with the carbon felt through a wire; and a resistor is connected in series on a lead connected between the iron polar plate and the carbon felt. According to the invention, nitrogen and phosphorus in the wastewater can be removed, the blue iron ore can be recycled, and the treatment target of combining wastewater treatment and resource recycling is achieved.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment and fuel cells, and in particular relates to a microbial fuel cell and a sewage treatment method for nitrogen and phosphorus removal in sewage treatment plants. Background technique [0002] In recent years, although the sewage treatment rate has continued to increase, the eutrophication problem caused by nitrogen and phosphorus pollution has not only not been resolved, but has become increasingly serious. The eutrophication of water body is very harmful and far-reaching. It not only causes economic losses, but also endangers human health. Urban waters are seriously polluted, and the eutrophication of lakes and reservoirs also seriously affects their water quality. At present, the degree of wastewater treatment is still low, and the control of nitrogen and phosphorus is not in place. Therefore, it is urgent to find a suitable process for nitrogen and phosphorus removal. [0003] With th...

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Problems solved by technology

[0004] At present, the traditional nitrogen and phosphorus removal technology needs to add additional organic matter and flocculant, which increases the cost of wastewater treatment, and it is easy to cause secondary pollution due to excessive addition

Facing the dual pressure of environmental pollution and resource shortage, the traditional wastewater treatment technology with high energy consumption, high investment, low output or even no output can no longer meet the requirements of sustainable development. How to combine wastewater pollution control with resource reuse and establish New water treatment technology has become the current trend

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