New method for efficiently treating garbage leachate
A technology of landfill leachate and a new method, which is applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of high cost of physical and chemical treatment, large amount of sludge, etc., and achieve production and The effect of low operating cost, saving loss and strong stability
Inactive Publication Date: 2012-07-18
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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Problems solved by technology
Among them, the cost of physical and chemical treatment is high, and although biological treatment can efficiently remove organic pollutants in leachate, it will produce a large amount of sludge and release a large amount of gas that can pollute the environment
In addition, the research on landfill leachate treatment in my country is still in its infancy, and the treatment process, design and operating parameters of leachate treatment have yet to be further explored. At present, there is no relatively complete process suitable for various landfill leachate, high treatment efficiency and process. Simple leachate treatment method
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Embodiment 1
[0019] A new method for efficient treatment of landfill leachate, the method uses microbial fuel cells such as figure 1 As shown, it is mainly composed of an anode chamber, an anode electrode, an anode microorganism, a cathode electrode and an external circuit. The cathode electrode is directly hot-pressed with a cation exchange membrane and a carbon cloth as the cathode electrode, and air is used as the cathode; its working principle is as follows: : (1) The organic pollutants in the wastewater are oxidized in the anode chamber under the action of microorganisms to produce electrons, protons and metabolites; (2) The generated electrons are transferred from the microbial cells to the surface of the anode to reduce the electrode; (3) The electrons (4) The generated protons diffuse from the anode chamber to the cathode surface; (5) At the cathode electrode, the oxygen in the air and the protons and electrons transferred from the anode undergo a reduction reaction on the cathode s...
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The invention discloses a new method for efficiently treating garbage leachate. The method comprises the following steps of: starting a microbiological fuel cell: starting the microbiological fuel cell by taking activated sludge as an inoculation solution, or starting the microbiological fuel cell by culturing anode electrogenesis strains, wherein the microbiological fuel cell is a single-chamber microbiological fuel cell, a cation exchange membrane and a carbon cloth are directly hot-pressed together to serve as a cathode electrode, and air is used as a cathode; acclimatizing the microbiological fuel cell: after the microbiological fuel cell is successfully started, replacing the activated sludge for the garbage leachate fractionally and gradually, and performing acclimatization and culture on the anode electrogenesis microbes until the anode electrogenesis microbes are acclimatized completely; and running the microbiological fuel cell: after the strains are acclimatized completely, loading the garbage leachate into the microbiological fuel cell in an intermittent or continuous flow mode so that garbage leachate is treated by the microbiological fuel cell, and monitoring the change of an output voltage and the change of the organic substance concentration in the cell. By the new method, the treatment efficiency is high, the operation is simple and stable, and the adaptability is strong.
Description
technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a new method for treating landfill leachate with high organic pollution by using a low-cost, stable, high-efficiency and pollution-free microbial fuel cell. technical background [0002] With the development of the economy and the continuous improvement of people's living standards, urban garbage is increasing year by year, and garbage disposal has become an urgent problem to be solved. At present, sanitary landfill, high-temperature composting, pyrolysis, incineration, etc. are widely used garbage disposal methods at home and abroad, but no matter what kind of disposal method, a large amount of landfill leachate will be lost in the later stage of disposal or during the treatment process. Leachate is a kind of high-concentration organic wastewater with large changes in water quality and quantity, imbalanced nutrient ratio, high ammonia nitrogen conten...
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Inventor 袁浩然邓丽芳熊祖鸿郭华芳陈勇
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI