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Method for treating organic pollutants by using biological carrier technology

A technology of organic pollutants and biological carriers, applied in the field of solid waste recycling, can solve the problems of low treatment efficiency, achieve the effects of increasing contact area, fast and efficient treatment, and increasing specific surface area

Active Publication Date: 2020-10-13
WUHAN INSTITUTE OF TECHNOLOGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In terms of new suspended fillers, the LINPOR fillers of the German LINDE company and the CAPTOR fillers of the British SIMONHARLIEY company are relatively mature. These two fillers are made of polyurethane foam and have a high specific surface area (5000-35000m 2 / m 3 ), the mass concentration of fixed microorganisms in the system can reach 10-18kg / m 3 and 7~10kg / m 3 , suitable for the treatment of high-concentration industrial wastewater, but this technology belongs to liquid fermentation reaction, the general treatment residence time is about 10 days, and the treatment efficiency is very low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The treatment method of kitchen waste filtrate is as follows:

[0034] first at 1m 3 A 20PPI porous polyurethane sponge with a porosity of 97% is loaded with 20L of a superabsorbent resin with a particle size of 40 meshes, and the water absorption rate is about 600. 50g of strains (1 part of bacillus, 2 parts of saccharomyces and 3 parts of Trichoderma mixture) are mixed, then the mixed material is put into the fermentation chamber, and the hot air system device is turned on for blasting to carry out solid-state fermentation. After 24 hours, the actual loss of the mixed material was 450kg, and the pipeline laid at the bottom of the fermentation chamber produced 20kg of oil. It can be seen that the system can process 450kg of filtrate per day. After that, the food waste filtrate is continuously transported as a nutrient solution to the fermentation bin to continue fermentation.

Embodiment 2

[0036] The leachate treatment method of the garbage transfer station is as follows:

[0037] first at 2m 3 The 30PPI porous ceramic with a porosity of 85% is loaded with 60L superabsorbent resin with a particle size of 100 mesh, and the water absorption rate is about 1000, and then mixed with 1200kg of leachate from the garbage transfer station, 30g of bacteria (2 parts of Bacillus subtilis, 2 parts of nitrosative Bacteria and 3 parts of yeast mixture), 5kg of starch are mixed, then the mixed material is put into the fermentation bin, and the hot air system device is turned on for blasting to carry out solid-state fermentation. After 24 hours, the actual loss of the mixed material was 1180kg, and 1kg of oil was discharged from the pipeline. It can be seen that the system can process 1180kg of filtrate per day. After that, the leachate from the garbage transfer station is continuously transported as a nutrient solution to the fermentation bin to continue fermentation.

Embodiment 3

[0039] Vegetable waste is handled as follows:

[0040] first at 3m 3 Load 100L of superabsorbent resin with a particle size of 60 mesh on the loofah pulp with a porosity of 85%, and the water absorption rate is about 800. After crushing 2000kg of vegetable waste into vegetable juice, add 500g of bacteria (1 part of Bacillus subtilis, 1 1 part of photosynthetic bacteria and 2 parts of Trichoderma), mixed with the carrier, and then the mixed material is put into the fermentation bin, and the hot air system device is turned on for blasting to carry out solid-state fermentation. After 24 hours, the actual loss of the mixed material is 1850kg, and then it is separated by a vibrating sieve. The material on the sieve is the loofah pulp carrier, and the material on the sieve is organic matter. The carrier is reused, and the organic matter continues to ferment to become organic fertilizer.

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Abstract

The invention discloses a method for treating organic pollutants by using a biological carrier technology. According to the method, organic pollutants are treated by a biological carrier or a water-absorbent resin-loaded biological carrier, so that solid fermentation can be performed. The method comprises the following specific steps of: mixing biological carrier with organic pollutants, putting the mixture into a fermentation bin, setting the temperature in the fermentation bin to be 80-90 DEG C to accelerate moisture volatilization, accumulating solid organic matters on the biological carrier, and then performing cooling to carry out solid fermentation; or loading granular water-absorbent resin into pore channels of the biological carrier to obtain the water-absorbent resin loaded biological carrier, mixing the water-absorbent resin loaded biological carrier with the organic pollutants, putting the mixture into the fermentation bin, and starting a hot air system to carry out solid-state fermentation on the organic pollutants. According to the method of the invention, the solid-state fermentation process of the organic pollutants is realized by utilizing the biological carrier technology, and therefore, the treatment speed is remarkably increased, the treatment efficiency is high, zero discharge of wastewater in a separation process is realized, secondary pollution is avoided,the operation cost is low. The method has huge market requirements and a wide application prospect.

Description

technical field [0001] The invention relates to the technical field of solid waste recycling, in particular to a method for treating organic pollutants using biological carrier technology. Background technique [0002] A biocarrier is a material that provides a fixed surface for biofilms to attach and grow on, also known as a biofiller. As early as the 1820s and 1930s, some people in the UK used gravel and pebbles as fillers to build biofilters to treat domestic sewage. At the end of the nineteenth century and the beginning of this century, Waring, Ditter and others successively carried out experiments on the biological contact oxidation method with gravel and slag as fillers. Later, Weigand in Germany invented the rotary biological contactor with sintered slag as filler. In the 1920s, Bach in Germany and Buswell in the United States carried out applied tests on the biological contact oxidation method. In 1929, Boothwell and others used grid plywood as the biological carr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30C02F1/28C05F15/00C05F11/00C05F11/08C05F17/20C05F17/10C05G3/00C02F101/30C02F103/06C02F103/20
CPCB01J20/26B01J20/24B01J20/20C02F1/285C05F11/00C05F17/20C05F7/00C05F5/002C05F17/10C05G3/00C02F2103/06C02F2103/20C02F2101/30C05F11/08Y02W30/40Y02W10/10
Inventor 袁军王存文汪铁林程健贾丽慧张富青李先福
Owner WUHAN INSTITUTE OF TECHNOLOGY
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