Treatment method of wastewater containing high-concentration polyethylene glycol
A polyethylene glycol and treatment method technology, applied in the direction of water/sewage multi-stage treatment, heating water/sewage treatment, water/sludge/sewage treatment, etc., can solve the main body of NOx, SOx, HF, H, incineration High requirements on equipment materials, strong corrosiveness of fluorine and chloride ions, etc., to achieve the effect of improving effluent water quality, less personnel investment, and reducing treatment costs
Inactive Publication Date: 2018-08-21
SUZHOU KETE ENVIRONMENTAL PROTECTION CO LTD
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Problems solved by technology
[0007] With the method (2), due to the high salt content in the waste water, the strong corrosiveness of fluorine and chloride ions, the requirements for the material of the main incineration equipment are high, and the N, S, F, CI, etc. in the waste water may produce NOx and SOx after incineration , HF, HCl and other pollutants, strict exhaust gas emission requirements, the investment in supporting exhaust gas treatment equipment may be 100% to 150% of the investment in the main incineration equipment, making the investment in the entire treatment system high
And the whole system has a lot of equipment, and the operation and management costs are high
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[0022] The above solution will be further described below in conjunction with specific embodiments. It should be understood that these examples are used to illustrate the present invention and not to limit the scope of the present invention. The implementation conditions used in the examples can be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not indicated are usually the conditions in routine experiments.
[0023] A treatment method containing high-concentration polyethylene glycol wastewater, comprising the following steps:
[0024] (1) Place polyethylene glycol wastewater in a high-temperature and high-pressure reaction device to react for a period of time, the reaction temperature is 220-340°C, the reaction pressure is 12.0-18.0MPa, the reaction time is 0.5-1.0h, and the preferred reaction temperature is 280 ℃, the reaction pressure is 15.3MPa, and the reaction time is 1h;
[0025] (2) Pass the residual liquid ...
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The invention discloses a treatment method of wastewater containing high-concentration polyethylene glycol. The treatment method comprises the following steps: (1) placing polyethylene glycol wastewater in a high-temperature high-pressure reaction device for reaction for a period of time; (2) mixing the residual liquid obtained in the step (1) with low-concentration wastewater, carrying out dilution, and introducing the mixture into an anaerobic biological reaction device for carrying out anaerobic biological treatment; and (3) mixing the residual liquid obtained in the step (2) with low-concentration wastewater, carrying out dilution, and introducing the mixture into an aerobic biological treatment device for carrying out aerobic biological treatment. The treatment method of wastewater containing high-concentration polyethylene glycol provided by the invention has the advantages of simple process and good sewage treatment effect.
Description
technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a treatment method for wastewater containing high-concentration polyethylene glycol. Background technique [0002] Polyethylene glycol is often used as raw material in the production process of pharmaceutical and chemical industries. The polyethylene glycol content of wastewater discharged from some industries can reach 25-30%, the COD concentration of wastewater can be as high as 400,000-500,000 mg / L, and the salt content ( Fluorine, chlorine, etc.) 10-12%, polyethylene glycol COD value 1.6-1.8g / g, BOD value 0-0.02g / g, B / C≈0, almost non-biodegradable. Directly discharged into water bodies (surface water COD10~25mg / L), will cause great environmental pollution. [0003] Domestic research on polyethylene glycol mainly focuses on its application, and there are few reports on its treatment. At present, there are two main treatment processes for this wastewater: [000...
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Patent Timeline
Login to View More IPC IPC(8): C02F9/14C02F101/34
CPCC02F1/02C02F3/30C02F9/00C02F2101/34
Inventor 马三剑杨海亮胡洋
Owner SUZHOU KETE ENVIRONMENTAL PROTECTION CO LTD