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Treatment method for alcohol-containing wastewater

A treatment method and technology for alcohol wastewater, which is applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, flocculation/sedimentation water/sewage treatment, etc. It can solve the problems of long wastewater flocculation and sedimentation time, and undisclosed inorganic high Problems such as molecular flocculants and organic polymer flocculants can reduce the difficulty, improve the efficiency of use, and reduce the probability of membrane clogging

Active Publication Date: 2015-11-18
成都民航六维航化有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the flocculant does not produce secondary pollution, the flocculation and sedimentation time of the wastewater is too long, and acid and alkali need to be added before adding the flocculant to adjust the pH value of the wastewater
[0007] Although CN204265568U discloses the use of inorganic macromolecule flocculant and organic macromolecule flocculant as the flocculant of airport deicing alcohol-containing wastewater, it does not disclose the inorganic macromolecule flocculant and organic polymer flocculant specifically suitable for airport deicing alcohol-containing wastewater flocculant

Method used

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  • Treatment method for alcohol-containing wastewater
  • Treatment method for alcohol-containing wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The composition of flocculant 1 is as follows:

[0037] The inorganic polymer flocculant whose aqueous solution is acidic is: polyaluminum sulfate;

[0038] The organic polymer flocculant whose aqueous solution is alkaline is: sodium carboxymethyl cellulose;

[0039] The weight ratio of polyaluminum sulfate and cationic polyacrylamide is 4:1;

[0040] The total amount of flocculant added is 200mg / L.

Embodiment 2

[0042] The composition of flocculant 2 is as follows:

[0043] The inorganic polymer flocculant whose aqueous solution is acidic is: polyferric sulfate;

[0044] The organic polymer flocculant whose aqueous solution is alkaline is chitosan;

[0045] The weight ratio of polyferric sulfate and chitosan is 1:5;

[0046] The total amount of flocculant added is 200mg / L.

Embodiment 3

[0048] The composition of flocculant 3 is as follows:

[0049] The inorganic polymer flocculant whose aqueous solution is acidic is: polyaluminum iron silicate;

[0050] The organic polymer flocculant whose aqueous solution is alkaline is: sodium carboxymethyl cellulose;

[0051] The weight ratio of polyaluminum iron silicate to cationic polyacrylamide is 10:1;

[0052] The total amount of flocculant added is 200mg / L.

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Abstract

The present invention relates to a treatment method for alcohol-containing wastewater, in particular to a treatment method for alcohol-containing wastewater produced after deicing of an airport by a deicing fluid. Before a film is adopted to carry out separation treatment on the alcohol-containing wastewater, a flocculant is used to carry out flocculation and precipitation pretreatment on the alcohol-containing wastewater, wherein the flocculant is composed of an inorganic polymeric flocculant, an aqueous solution of which is acidic, and an organic polymeric flocculant, an aqueous solution of which is alkaline. According to the treatment method for the alcohol-containing wastewater, impurity contamination caused by pH value adjustment in an alcohol-containing wastewater flocculation treatment process is reduced; the flocculation effect is good; film separation equipment is maintained to operate stably at a high utilization rate, and the flocculant can be recycled.

Description

technical field [0001] The invention belongs to the field of environmental protection, and relates to a method for treating alcohol-containing wastewater, in particular to a method for treating alcohol-containing wastewater generated after deicing an airport by a deicing fluid. Background technique [0002] In order to maintain the flight safety of aircraft in winter, airports need to use deicing fluid to de-ice aircraft and runways. It is estimated that the deicing of a large commercial aircraft requires about 2-4 cubic meters of deicing fluid, while the annual consumption of deicing fluid for a medium-sized international airport is between 1000 and 2500 tons. These deicing fluids are related to ice and snow After mixing, a large amount of alcohol-containing wastewater will be produced. Alcohol-containing wastewater contains alcohol, water-soluble polymers, surfactants, phosphates, corrosion inhibitors and other substances, with large pH fluctuations, and its chemical oxyg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F1/52C02F1/56
Inventor 刘雪奇梅拥军罗晓韦勇强王航罗淑文
Owner 成都民航六维航化有限责任公司
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