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Method for pretreatment of waste incineration plant percolate nanofiltration intake water

A technology of waste incineration and leachate, which is applied in the treatment of polluted groundwater/leachate, water/sewage treatment, neutralized water/sewage treatment, etc. and other problems, to achieve the effect of saving treatment costs, alleviating membrane fouling, and reducing the concentration of organic matter

Inactive Publication Date: 2019-12-31
SHANGHAI SUS ENVIRONMENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A large amount of landfill leachate will be produced in the composting process before incineration. Its composition is complex, it is easy to produce stench, and it contains many toxic and harmful substances. If it is not treated in time, it may pollute surface water and groundwater, thereby causing harm to the environment and human health. harm

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  • Method for pretreatment of waste incineration plant percolate nanofiltration intake water

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Embodiment

[0018] An example of using the method of the present invention to pretreat leachate nanofiltration influent in a waste incineration plant.

[0019] The nanofiltration influent contains a large amount of humic organic matter, its COD is 272mg / L, and its pH is 6.9. Follow the steps below:

[0020] (1) Add a small amount of 10g / L polyaluminum chloride (PAC) to the leachate nanofiltration influent of the waste incineration plant, and control the concentration of PAC after adding to 100mg / L;

[0021] (2) Add 20% (mass ratio) HCl, adjust the pH of the water sample to 5, and stir at a speed of 200 rpm (rev / min) for 2 min;

[0022] (3) Add 10g / L polyacrylamide (PAM910), control the concentration of polyacrylamide after adding to 4mg / L, stir at a speed of 80rpm (rev / min) for 18min, settle for 30min, and obtain pretreated garbage The incineration plant leachate feeds into nanofiltration and directly enters the membrane treatment system for membrane filtration treatment.

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Abstract

The invention provides a method for pretreatment of waste incineration plant percolate nanofiltration intake water. The method is characterized by including the steps of: 1. adding poly aluminium chloride (PAC) into waste incineration plant percolate nanofiltration intake water, and controlling the concentration of the PAC at 90-110mg / L after adding; 2. adding hydrochloric acid, adjusting the pH value of the water sample to 4.5-5.5, and performing stirring; 3. adding polyacrylamide (PAM910) is added, controlling the concentration of the polyacrylamide at 3.5-4.5mg / L after adding, and performing stirring and settling to obtain pretreated waste incineration plant percolate nanofiltration intake water. The method provided by the invention has the advantages of high removal rate, low cost andstable effect, and can effectively remove humus organic matters from ultrafiltration effluent water (nanofiltration intake water).

Description

technical field [0001] The invention relates to a method for pretreatment of leachate nanofiltration influent in a garbage incineration plant, which reduces and removes organic matter in nanofiltration influent through coagulation technology, relieves nanofiltration membrane pollution, and improves membrane flux. Background technique [0002] The main disposal methods of MSW are landfill, incineration and composting. Compared with other treatment methods, incineration has the advantages of small footprint, high capacity reduction rate, fast treatment speed, complete harmlessness, and waste heat can be used for power generation or heating. A large amount of landfill leachate will be produced in the composting process before incineration. Its composition is complex, it is easy to produce stench, and it contains many toxic and harmful substances. If it is not treated in time, it may pollute surface water and groundwater, thereby causing harm to the environment and human health....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F101/30C02F103/06
CPCC02F1/5236C02F1/56C02F1/66C02F2001/007C02F2101/30C02F2103/06
Inventor 王罗春白力何昌伟宗海峰王友东王溜占周振阮大年
Owner SHANGHAI SUS ENVIRONMENT