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Method for degrading organic wastewater through electrolytic stimulation of mineralized refuse supported microorganisms

A technology of microbial electrolysis and mineralization of garbage, which is applied in the field of environmental pollution control, can solve the problem of a single current range of bacteria, and achieve the effect of enhancing the treatment effect, strong treatment capacity, and increasing the electrolysis current

Active Publication Date: 2013-01-09
江阴智产汇知识产权运营有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: to overcome the shortcomings of single bacterial population and narrow current range that can be tolerated in the microbial electrolytic stimulation technology in the prior art, and to provide a method for degrading organic wastewater by microbial electrolytic stimulation loaded with mineralized garbage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Add Dye Orange II wastewater with a concentration of 35mg / L into the electrolytic cell, and then add mineralized waste that has been landfilled for 15 years after crushing through a 100-mesh sieve. The solid-liquid mass ratio of the mineralized waste and waste water is 1:500. The electrode materials of the two electrodes are all graphite electrodes. When the current of the electrolytic cell is connected, the current between the two electrodes is 40mA. After 2 hours, the organic matter in the wastewater is oxidized and degraded, precipitated and separated, and the concentration of pollutants in the wastewater is analyzed, and the removal rate reaches 82.2%.

[0019] For the same wastewater, under the same conditions, but no mineralized waste was added, the pollutant removal rate was 30.1% in the same treatment time.

[0020] For the same wastewater, only mineralized waste is added without electricity, and the pollutant removal rate is only 5.7% in the same treatment time....

Embodiment 2

[0022] Add methylene blue wastewater with a concentration of 35mg / L into the electrolytic cell, and then add mineralized waste that has been landfilled for 8 years after crushing through a 50-mesh sieve. The solid-liquid mass ratio of the mineralized waste and waste water is 1:1000. The materials are all graphite electrodes, and the current of the electrolytic cell is connected, and the current between the two electrodes is 5mA. After 5 hours, the organic matter in the wastewater is oxidized and degraded, precipitated and separated, and the concentration of pollutants in the wastewater is analyzed, and the removal rate reaches 82.2%. After precipitation and separation, the solid was left, and then the same waste water was added, and the reaction was continued under the same conditions. After 5 hours, the removal rate was 84.5%.

[0023] For the same wastewater, under the same conditions, but no mineralized waste was added, the pollutant removal rate was 33.2% in the same treatm...

Embodiment 3

[0026] Continuously feed phenol waste water with a concentration of 10mg / L into the electrolytic cell with inlet and outlet, and then add the mineralized waste that has been landfilled for 8 years crushed through a 50-mesh sieve, the solid-liquid solid-liquid of the mineralized waste and the wastewater in the electrolytic cell The mass ratio is 1:500, the electrode materials of the two electrodes of the electrolytic cell are graphite electrodes, the current of the electrolytic cell is connected, the current between the two electrodes is 30mA, the residence time of the wastewater is 3h, and the solid and liquid are separated through the overflow outlet, and the pollutants in the water are analyzed Concentration, after a long time of operation, the removal rate is between 83.7% and 89.5%.

[0027] For the same wastewater, under the same conditions, but no mineralized waste was added, the pollutant removal rate was between 21.7 and 37.4% in the same treatment time.

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Abstract

The invention provides a method for degrading organic wastewater through the electrolytic stimulation of mineralized refuse supported microorganisms. The method comprises the following steps: adding organic wastewater in an electrolytic cell and then adding the mineralized refuse, wherein the solid-to-liquid ratio of the mineralized refuse to the wastewater is 1:(500-1000) and the electrode materials of the two poles of the electrolytic cell are graphite; and connecting the current of the electrolytic cell, wherein the current between the two poles is 5-40mA; oxidizing and degrading the organic matter in the wastewater after 2-5 hours; and separating out precipitates so that the wastewater can reach the standard to be discharged. By utilizing the adaptability and strong treatment capability of the various floras carried by the mineralized refuse on organic polluted wastewater, the treatment effect can be enhanced; and as the microorganisms attach to the insides of the holes of the mineralized refuse and the impact on the active oxidation groups on electrode surfaces is low, the electrolytic current can be increased, the impact of the outside on the living environment in the holes is low, pollutants are adsorbed near the holes and the pollutants can be easily degraded.

Description

technical field [0001] The invention relates to the technical field of environmental pollution control, in particular to a method for stimulating and degrading organic waste water by electrolysis of microorganisms loaded with mineralized garbage. Background technique [0002] After more than 8 years of landfilling, municipal solid waste has undergone changes under the action of physics, chemistry and biology, from raw waste emitting malodorous gas to stale waste with earthy smell, which is called "mineralization". Rubbish". [0003] There are dozens of sanitary and quasi-sanitary urban domestic waste landfills and general storage yards in China, and tens of millions of tons of garbage have been filled or piled up. Some of the garbage has basically reached a stable state after 8-10 years of degradation. In Shanghai, there are at least 40 million tons of this kind of mineralized waste (20 million tons in the Laogang landfill, nearly 20 million tons in urban and suburban stor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34
Inventor 马建锋邹静姚超李定龙
Owner 江阴智产汇知识产权运营有限公司
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