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Waste pyrolysis sewage treatment system and treatment method

A sewage treatment system, sewage technology, applied in the direction of water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. It can be used as a sewage treatment technology in the solution process, and no one has proposed it. problems, to achieve the effect of saving coke quenching water, reducing equipment investment, and simplifying the process

Inactive Publication Date: 2017-11-14
BEIJING SHENYUAN ENVIRONMENTAL PROTECTION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the physicochemical treatment adsorption method, activated carbon is generally used as the adsorption carrier to treat sewage. No one has proposed the technology of recycling the waste product pyrolysis carbon into the pyrolysis process as sewage treatment.

Method used

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  • Waste pyrolysis sewage treatment system and treatment method
  • Waste pyrolysis sewage treatment system and treatment method
  • Waste pyrolysis sewage treatment system and treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] See figure 1 with figure 2 , a waste pyrolysis sewage treatment system, comprising a raw material warehouse 1, a raw material pretreatment device 2, a pyrolysis furnace 3, an oil-water separation device 4, a water collection tank 5, a pyrolytic carbon cooling device 6, a sewage primary purification device 7, and a comprehensive sewage Processing system 8, pyrolytic carbon collection device 9;

[0039] The raw material bin 1 is connected to the raw material pretreatment device 2 through the pipeline, and the raw material pretreatment device 2 is connected to the pyrolysis furnace 3 through the pipeline; the raw material bin 1 is connected to the sump 5 through the landfill leachate pipeline 10;

[0040] The upper part of the pyrolysis furnace 3 is provided with an oil and gas outlet, which is connected to the oil-water separation device 4 through the liquid oil-water pipeline 11; the sewage outlet of the oil-water separation device 4 is connected to the sump 5; Charco...

Embodiment 2

[0044] Use the device of embodiment 1 to carry out garbage pyrolysis sewage treatment, comprising steps:

[0045] 1) Raw material pretreatment: Household waste is weighed and stored in the raw material warehouse for 3 days, so that the moisture content of the waste is reduced by 10%; the landfill leachate generated by the accumulation is discharged into the sump; after accumulation, the inorganic impurities are separated from the waste for landfill ; Separation of metals for export and sales; separation of organic matter and combustibles and crushing, and pyrolysis in a pyrolysis furnace; after crushing, the particle size is 5mm-10mm;

[0046] 2) The crushed material enters through the feed port of the pyrolysis furnace, and is pyrolyzed in an environment where the built-in radiant tube of the pyrolysis furnace is isolated from oxygen. The material is pyrolyzed in an environment isolated from oxygen by a built-in radiant tube. The pyrolysis temperature is 600°C-700°C, and the ...

Embodiment 3

[0057] The system and process used are the same as in Example 2. The pyrolysis treatment parameters in this embodiment are: the treatment capacity is 20t / d, the pyrolysis charcoal is 8t / d, and the sewage is 10t / d. The pyrolytic carbon stays in the sewage primary purification device for 4 hours, and the ratio of waste pyrolytic carbon to sewage is 0.3:1 (w / w). The specific surface area of ​​the pyrolytic charcoal obtained by pyrolysis is 270m 2 / g.

[0058] The temperature of pyrolyzed sewage and landfill leachate in the sump is 25°C.

[0059] Table 2 Comparison of influent and effluent water quality of primary sewage purification device

[0060]

[0061] As can be seen from Table 2, COD removal rate: 60%; BOD 5 The removal rate: 46%.

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Abstract

The present invention proposes a garbage pyrolysis sewage treatment system, including a raw material warehouse, a raw material pretreatment device, a pyrolysis furnace, an oil-water separation device, a water collection pool, a pyrolysis carbon cooling device, a sewage primary purification device, and a comprehensive sewage treatment system. Charcoal collection device; the raw material warehouse is connected to the raw material pretreatment device, and the raw material pretreatment device is connected to the pyrolysis furnace through pipelines; the raw material warehouse is connected to the sump through pipelines; the pyrolysis furnace is connected to the oil-water separation device, and the sewage outlet of the oil-water separation device connected to the sump; the pyrolysis furnace is connected to the pyrolytic carbon cooling device through the discharge port; the pyrolytic carbon outlet is connected to the sewage primary purification device. The method proposed by the invention not only reduces the investment in sewage equipment, simplifies the technological process, but also saves coke quenching water. Rediscover the adsorption function of garbage pyrolytic carbon to treat pyrolysis sewage without causing secondary pollution, and achieve the purpose of "treating waste with waste". It is an effective method for treating pyrolysis sewage that is green and environmentally friendly.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and in particular relates to a treatment system and a treatment method for sewage produced by domestic garbage pyrolysis. Background technique [0002] Garbage treatment technologies include pyrolysis and incineration. Most of the waste treatment now uses high-temperature incinerators. The temperature in the furnace is heated to 850°C for incineration, which is higher than the temperature required by pyrolysis furnaces, and many harmful substances are likely to be produced during the incineration process. , especially highly toxic carcinogenic pollutants dioxins. The garbage pyrolysis method is to decompose domestic garbage under anaerobic conditions to generate gas, fuel oil, and solid carbon for reuse. It avoids the problem of dioxin pollution from the mechanism, and is completely in line with the harmlessness of garbage. The principle and purpose of recycling and reducing the amount of treatme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10B53/00C10B57/00B09B3/00C10B39/04C02F9/02
CPCC10B39/04C10B53/00C10B57/00C02F9/00C02F1/283B09B3/40
Inventor 巴玉鑫吴小飞吴道洪肖磊
Owner BEIJING SHENYUAN ENVIRONMENTAL PROTECTION CO LTD
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