Method for removing methanol, n-butanol and isobutanol from wastewater of amino resin workshop

An amino resin, n-butanol technology, applied in chemical instruments and methods, water pollutants, natural water treatment, etc., can solve the problems of long biochemical treatment time, inactivation of microorganisms, poor treatment capacity, etc., and achieve fast precipitation. , the effect of strong complexing ability and low processing cost

Inactive Publication Date: 2015-11-18
李海兰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The biochemical treatment takes a relatively long time, and the high content of alcohol will lead to the inactivation of microorganisms
Coagulation precipitation method, air stripping method, extraction method and adsorption method are commonly used in physical and chemical methods, among which air stripping method and extraction method are suitable for production lines with a certain production scale, and the equipment cost is relatively high; adsorption method is mainly used for low-concentration alcohol-containing For the treatment of wastewater, the most commonly used adsorbent is activated carbon, which has poor processing capacity; and coagulation, for water-soluble alcohols, the effect of existing coagulants is relatively poor, and the alcohol in wastewater is mainly obtained by coagulation. The flocs produced in the sedimentation have the adsorption effect and are removed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] A method for removing methanol, n-butanol and isobutanol in amino resin workshop wastewater,

[0060] Step 1: Add the following mass fraction substances to the wastewater:

[0061] 14 parts of 1,3,3-trimethyl-2-oxabicyclo[2.2.2]octane,

[0062] 19 parts of dihydroflavone glycosides,

[0063] 0.8 parts of S(-)-2-amino-6-n-propylamino-4,5,6,7-tetrahydrobenzothiazole dihydrochloride,

[0064] 14 parts of 4-octylphenol ethoxylate,

[0065] 5 parts of 3',4'-dihydroxy-2-(methylamino)acetophenone hydrochloride,

[0066] After stirring for 10-20 minutes, let it stand for 15-30 minutes, and then filter to obtain the supernatant;

[0067] Step 2: Add the following mass fraction substances to the supernatant obtained in Step 1:

[0068] 16 parts of 1,2-dimethoxy-4-(2-propenyl)benzene,

[0069] 0.7 parts of 4-methoxybenzyl acetate,

[0070]7 parts of 6,6,10-trimethylbicyclo-3,1,1-hept-2-ene,

[0071] 3 parts of 2-[[1-(3-acetylthio-2-methylpropionyl)pyrrolidine-2-formyl]amin...

Embodiment 2

[0083] A method for removing methanol, n-butanol and isobutanol in amino resin workshop wastewater:

[0084] Step 1: Add the following mass fraction substances to the wastewater:

[0085] 18 parts of 1,3,3-trimethyl-2-oxabicyclo[2.2.2]octane,

[0086] 23 parts of dihydroflavone glycosides,

[0087] 1.0 parts of S(-)-2-amino-6-n-propylamino-4,5,6,7-tetrahydrobenzothiazole dihydrochloride,

[0088] 16 parts of 4-octylphenol ethoxylate,

[0089] 7 parts of 3',4'-dihydroxy-2-(methylamino)acetophenone hydrochloride,

[0090] After stirring for 10-20 minutes, let it stand for 15-30 minutes, and then filter to obtain the supernatant;

[0091] Step 2: Add the following mass fraction substances to the supernatant obtained in Step 1:

[0092] 20 parts of 1,2-dimethoxy-4-(2-propenyl)benzene,

[0093] 1.0 parts of 4-methoxybenzyl acetate,

[0094] 9 parts of 6,6,10-trimethylbicyclo-3,1,1-hept-2-ene,

[0095] 4 parts of 2-[[1-(3-acetylthio-2-methylpropionyl)pyrrolidine-2-formyl]ami...

Embodiment 3

[0106] A method for removing methanol, n-butanol and isobutanol in amino resin workshop wastewater:

[0107] Step 1: Add the following mass fraction substances to the wastewater:

[0108] 16 parts of 1,3,3-trimethyl-2-oxabicyclo[2.2.2]octane,

[0109] 21 parts of dihydroflavone glycosides,

[0110] 0.9 parts of S(-)-2-amino-6-n-propylamino-4,5,6,7-tetrahydrobenzothiazole dihydrochloride,

[0111] 15 parts of 4-octylphenol ethoxylate,

[0112] 6 parts of 3',4'-dihydroxy-2-(methylamino)acetophenone hydrochloride,

[0113] After stirring for 10-20 minutes, let it stand for 15-30 minutes, and then filter to obtain the supernatant;

[0114] Step 2: Add the following mass fraction substances to the supernatant obtained in Step 1:

[0115] 18 parts of 1,2-dimethoxy-4-(2-propenyl)benzene,

[0116] 0.9 parts of 4-methoxybenzyl acetate,

[0117] 8 parts of 6,6,10-trimethylbicyclo-3,1,1-hept-2-ene,

[0118] 3 parts of 2-[[1-(3-acetylthio-2-methylpropionyl)pyrrolidine-2-formyl]ami...

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PUM

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Abstract

The invention relates to a method for removing methanol, n-butanol and isobutanol from wastewater of an amino resin workshop. The method comprises the steps of adding 1,3,3-trimethyl-2-oxa bicyclo[2.2.2]octane, flavanone glycoside, S(-)-2-amino-6-n-propyl amino-4,5,6,7-tetrahydro benzothiazole di-hydrochloride, 4-octyl phenol ethoxylate, 3',4'-dihydroxy-2-(methyl amino)acetophenone hydrochloride, 4-acetyloxy-3-methoxy-(2-propenyl)benzene, acet-4-methoxy-benzyl ester, 6,6,10-trimethyl bicyclo-3,1,1-heptyl-2-alkene, 2-[[1-(3-acetylthio-2-methyl propionyl)pyrrolidine-2-formyl]amino]-3- phenylpropionic acid and the like. The method has the advantages that complex capabilities to target objects are high; the deposition velocities of complex compounds are fast; the removal rate can reach 99.9 percent; the dose is low; hazard to a water body is avoided.

Description

technical field [0001] The invention relates to a method for removing methanol, n-butanol and isobutanol in waste water of an amino resin workshop, and belongs to the technical field of environmental protection. Background technique [0002] Amino resin refers to a thermosetting resin obtained by polycondensation reaction of compounds containing amino groups and aldehydes (mainly formaldehyde). The amino resin used in coatings must be modified by alcohol to be soluble in organic solvents and have good compatibility and reactivity with the main film-forming resin. Amino resins must be etherified with alcohols before they can be applied to coatings. The alcohols used mainly include methanol, ethanol, isopropanol, n-butanol, isobutanol and octanol. The resin etherified with methanol is still water-soluble, the resin etherified with ethanol is alcohol-soluble, and the resin etherified with butanol has better solubility in organic solvents. The wastewater from the amino resin p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/54C02F1/56C02F101/34C02F103/38
Inventor 李海兰
Owner 李海兰
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