Industrial oily wastewater treatment method

A treatment method and technology for oily sewage, applied in water/sewage treatment, water/sludge/sewage treatment, flocculation/sedimentation water/sewage treatment, etc., can solve problems affecting the survival of aquatic organisms, hindering the growth of crops, and blocking soil voids, etc. problem, to achieve the effect of facilitating subsequent oil separation, good demulsification and degreasing effect, and improving flocculation and bridging effect

Inactive Publication Date: 2015-10-21
李平兰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] If the oily wastewater is not recycled, it will cause waste; if it is discharged into rivers, lakes or bays, it will pollute the water body and affect the survival of aquatic organisms; if it is used for agricultural irrigation, it will block the soil gap and hinder the growth of crops

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] An industrial oily sewage treatment agent, which is composed of demulsifier, flocculant, surfactant and solvent; the mass parts of each component are 25-35 parts of demulsifier, 5-10 parts of flocculant, and 5-10 parts of surfactant part, 50-80 parts of solvent;

[0040] Wherein, the demulsifier is made from the following raw materials in parts by weight:

[0041] Allyl polyoxyalkylene epoxy ether 10

[0042] Etherified starch 1

[0043] Fatty alcohol polyoxyethylene ether 15

[0044] Polyoxypropylene diol 2

[0045] Wherein, flocculant is made from the raw material of following parts by weight:

[0046] Diacetone Acrylamide 8

[0047] Polyoxyethylene alkylamine 5

[0048] Polyacrylamide 10

[0049] Wherein, surfactant is made from the raw material of following parts by weight:

[0050] Sodium m-nitrobenzenesulfonate 3

[0051] Polyoxypropylene diol 4

[0052] Tetradecyldimethylbenzylammonium chloride 5

[0053] Dimethylphenylbenzyl ammonium chloride disulfon...

Embodiment 2

[0056] An industrial oily sewage treatment agent, which is composed of demulsifier, flocculant, surfactant and solvent; the mass parts of each component are 25-35 parts of demulsifier, 5-10 parts of flocculant, and 5-10 parts of surfactant part, 50-80 parts of solvent;

[0057] Wherein, the demulsifier is made from the following raw materials in parts by weight:

[0058] Allyl polyoxyalkylene epoxy ether 20

[0059] Etherified starch 5

[0060] Fatty alcohol polyoxyethylene ether 20

[0061] Polyoxypropylene diol 8

[0062] Wherein, flocculant is made from the raw material of following parts by weight:

[0063] Diacetone Acrylamide 15

[0064] Polyoxyethylene alkylamine 10

[0065] Polyacrylamide 16

[0066] Wherein, surfactant is made from the raw material of following parts by weight:

[0067] Sodium m-nitrobenzenesulfonate 6

[0068] Polyoxypropylene diol 10

[0069] Tetradecyldimethylbenzylammonium chloride 10

[0070] Dimethylphenylbenzylammonium chloride disulfo...

Embodiment 3

[0073] An oily sewage treatment agent, consisting of a demulsifier, a flocculant, a surfactant and a solvent; the parts by mass of each component are 25-35 parts of a demulsifier, 5-10 parts of a flocculant, and 5-10 parts of a surfactant , 50-80 parts of solvent;

[0074] Wherein, the demulsifier is made from the following raw materials in parts by weight:

[0075] Allyl polyoxyalkylene epoxy ether 15

[0076] Etherified starch 2

[0077] Fatty alcohol polyoxyethylene ether 18

[0078] Polyoxypropylene diol 6

[0079] Wherein, flocculant is made from the raw material of following parts by weight:

[0080] Diacetone Acrylamide 12

[0081] Polyoxyethylene alkylamine 8

[0082] Polyacrylamide 13

[0083] Wherein, surfactant is made from the raw material of following parts by weight:

[0084] Sodium m-nitrobenzenesulfonate 4

[0085] Polyoxypropylene diol 8

[0086] Tetradecyldimethylbenzylammonium chloride 8

[0087] Dimethylphenylbenzyl ammonium chloride disulfonate ...

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PUM

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Abstract

The present invention relates to an industrial oily wastewater treatment method. The method comprises: adding an oily wastewater treatment agent to wastewater in which the oil content is 700-1200 mg/L, wherein the added volume is 10 mg/L; and after stirring the mixture for 20-40 minutes, performing separation by standing, wherein the oily wastewater treatment agent consists of a demulsifier, a flocculant and a surfactant and a solvent; and components in parts by mass are: 25-35 parts of the demulsifier, 5-10 parts of the flocculant, 5-10 parts of the surfactant, and 50-80 parts of the solvent. The oily wastewater treatment agent can simultaneously have effects of demulsification, flocculation, bridging and bubbling. According to the treatment method of the present invention, the composite oily wastewater treatment agent has high efficiency in removing oil with small dosage, and is particularly applicable to treatment of wastewater that contains high concentration of oil.

Description

technical field [0001] The invention relates to a treatment method for industrial oily sewage and belongs to the field of water treatment. Background technique [0002] Oily substances contained in oily wastewater include natural petroleum, petroleum products, tar and its fractions, and edible animal and vegetable oils and fats. In terms of pollution to water bodies, it is mainly oil and tar. Due to the great difference in the oil concentration in the wastewater discharged from different industrial sectors, such as the wastewater generated in the oil refining process, the oil content is about 150-1000mg / L, the tar content in the coking wastewater is about 500-800mg / L, and the wastewater discharged from the gas generation station The tar content can reach 2000-3000mg / L. Therefore, the treatment of oily wastewater should first use the grease trap to recover slick oil or heavy oil, the treatment efficiency is 60% to 80%, and the oil content in the effluent is about 100 to 200...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/00C02F1/54C02F1/56
Inventor 李平兰
Owner 李平兰
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