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Household garbage incineration slag cleaning wastewater source pollutant treatment method

A domestic waste incineration and pollutant treatment technology, which is applied in the direction of water pollutants, water/sewage treatment, water/sewage multi-stage treatment, etc., can solve the problem of plastic additives not being reported, so as to facilitate biological treatment and reduce plastic additives content, toxicity reduction effect

Active Publication Date: 2021-07-23
广东绿富域资源再生科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the application of semiconductor photocatalytic materials in plastic additives in slag cleaning wastewater has not been reported

Method used

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  • Household garbage incineration slag cleaning wastewater source pollutant treatment method

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Experimental program
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Effect test

Embodiment 1

[0038] The embodiment of the present invention also proposes a Bi 2 WO 6 Composite lanthanum manganese and iron semiconductor photocatalyst nano material preparation method, at first 3.00g bismuth nitrate pentahydrate, 2.50g sodium tungstate dihydrate, 0.26g manganese nitrate hexahydrate, 0.30g lanthanum nitrate hexahydrate and 0.24g nine Ferric nitrate water is mixed in 60mL of ethylene glycol, and fully stirred until it is completely dissolved, then add 0.50g of oxalic acid, and continue to stir until it becomes gelatinous, then put the gelatinous mixture in an oven and dry it at 120°C to form dry gel. After the reaction is finished, the sample is ground to obtain a powdered bismuth tungstate nanomaterial with a doping amount of about 15% of lanthanum manganese and iron.

[0039] In addition, the doping amount of manganese lanthanum and iron is 10% bismuth tungstate nanomaterial, which is prepared by adjusting the quality of manganese nitrate hexahydrate and lanthanum nitr...

Embodiment 2

[0041] Adopt the Bi of above-mentioned embodiment 1 2 WO 6 The preparation method of the semiconducting photocatalyst nanometer material of composite lanthanum manganese and iron, the prepared Bi of different lanthanum manganese and iron doping amount 2 WO 6 Semiconductor photocatalyst nanomaterials compounded with lanthanum manganese and iron, and then photocatalyzed separately to degrade the matrix solution of slag cleaning wastewater containing microplastic particles. Among them, the light source power is 400W, the visible light illumination time is 120min, Bi 2 WO 6 The concentration of semiconductor photocatalyst nanomaterials composited with lanthanum, manganese and iron is 2.5g / L. The target water body to be treated is prepared by dispersing 10mg of microplastic particles in a 10mg / L slag cleaning wastewater matrix solution using a stirrer. Different lanthanum, manganese and iron The doping amount makes the data table of different samples, as follows:

[0042] ...

Embodiment 3

[0046] This embodiment utilizes Bi with lanthanum manganese and iron doping amount as 10% 2 WO 6 Cyclic experiment of photocatalytic degradation of plastic additive pollutants in microplastic particles by semiconductor photocatalyst nanomaterials composited with lanthanum manganese and iron. The light source power is 400W, Bi 2 WO 6 The concentration of semiconductor photocatalyst nanomaterials composited with lanthanum, manganese and iron is 5g / L, and the target water body is to disperse 10mg of microplastic particles in a 10mg / L slag cleaning wastewater matrix solution using a stirrer, and the light time for each photocatalytic degradation is 80min, then Bi 2 WO 6 Extraction of semiconductor photocatalyst nanomaterials composited with lanthanum manganese and iron. After 5 cycles of experiments, the bismuth tungstate material doped with 10% of lanthanum, manganese and iron is still effective in degrading the plastic additive solution in microplastic particles, only from ...

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Abstract

The invention discloses a household garbage incineration slag cleaning wastewater source pollutant treatment method. The method comprises the following steps of firstly, spraying a semiconductor photocatalyst solution to garbage to be subjected to combustion treatment, then melting the micro plastic particles in the garbage through combustion reaction in the hearth, and enabling the melted micro plastic particles to capture the semiconductor photocatalyst to be attached to the surfaces of the micro plastic particles and / or enter the micro plastic particles, after the incineration slag is cleaned, enabling the micro plastic particle conjugate to enter the cleaning wastewater, illuminating the wastewater by visible light, and accelerating photocatalytic degradation of the micro plastic particle conjugate by a semiconductor photocatalyst, and along with further decomposition of the plastic additive, reducing the stability of the micro plastic particle conjugate, and cracking and breaking the micro plastic particle conjugate, and then separating the magnetic semiconductor photocatalyst from the water body and recycling in a magnetic mode. Compared with the prior art, the technical scheme has the advantages of high efficiency, convenience and the like, and the plastic additive in the household garbage incineration slag cleaning wastewater can be effectively decomposed and removed.

Description

technical field [0001] The invention relates to the technical field of incinerator slag treatment, in particular to a method for treating source pollutants of domestic garbage incinerator slag cleaning wastewater. Background technique [0002] With the development of social economy and the continuous improvement of people's living standards, people's material life has been greatly satisfied. Plastic products are an indispensable part of production and life. The production and use of plastic products have spread all over the world. Correspondingly, plastics in domestic waste also increased. [0003] In order to realize the resource utilization of a large amount of domestic waste and other mixtures and eliminate the toxic and harmful substances in domestic waste, high-temperature incineration treatment is a popular trend at present and even in the future. High-temperature incineration can remove excessive moisture inside the waste and decompose the waste inside. The harmful s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/12F23G5/44F23J1/08C02F101/30
CPCC02F1/30C02F1/36C02F1/481F23G5/444F23J1/08C02F2101/30F23G2201/701F23J2700/003
Inventor 陈光毅叶富城罗健明周锦潮阮伟涛陆钢张新科
Owner 广东绿富域资源再生科技有限公司
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