CN103121769A - Sorbic acid wastewater treatment process - Google Patents
Sorbic acid wastewater treatment process Download PDFInfo
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- CN103121769A CN103121769A CN2013100452926A CN201310045292A CN103121769A CN 103121769 A CN103121769 A CN 103121769A CN 2013100452926 A CN2013100452926 A CN 2013100452926A CN 201310045292 A CN201310045292 A CN 201310045292A CN 103121769 A CN103121769 A CN 103121769A
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- ammonium chloride
- sorbic acid
- wastewater treatment
- acid wastewater
- treatment process
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Abstract
The invention belongs to the technical field of coal chemical industry and particularly relates to a sorbic acid wastewater treatment process. The sorbic acid wastewater treatment process comprises the following steps of: neutralizing hydrochloric acid in wastewater by using ammonium bicarbonate, and enabling tar to form solid oil sludge under the action of air flotation, wherein the density of the solid oil sludge is smaller than that of a liquid phase, and the action of air flotation is formed by a great deal of carbon dioxide bubbles generated in the neutralization process; removing the oil sludge through an oil removal machine; adding an amphoteric ionic polyacrylamide flocculating agent to remove most of organisms; then, adding a certain amount of active carbon to decolor; removing chroma and COD (Chemical Oxygen Demand); concentrating an ammonium chloride solution by using an RO (Reverse Osmosis) technology; and finally, removing water in the ammonium chloride solution through triple effect evaporation to obtain a qualified ammonium chloride product. By using the technology, waste is turned into wealth, considerable economic benefits are created, and the sorbic acid wastewater is thoroughly treated.
Description
Technical field
The invention belongs to technical field of coal chemical industry, relate in particular to a kind of sorbic acid wastewater treatment treatment process.
Background technology
Sorbic Acid (sorbic acid), formal name used at school 2, the 4-Sorbic Acid, has stronger restraining and sterilizing bacteria effect, it is the high-efficiency low-toxicity sanitas of generally acknowledging at present, all inhibited to yeast, mould and many fungies, be the high effect nontoxic Antisepticize and mildew preventive, be used for human food prods, animal-feed, makeup, medicine, wrapping material and rubber ingredients etc.
Producing main synthetic route at present is ketene, crotonic aldehyde polymeric acid solution, ketene and crotonic aldehyde carry out polyaddition reaction and generate polyethylene lactone (Sorbic Acid polyester) under the effect of catalyzer, then by vacuum-evaporation, add the Sorbic Acid polyester after desolvation in certain density hydrochloric acid soln under whipped state, it is decomposed under 94-98 ℃ makes Sorbic Acid free out, then suction strainer, centrifuge washing obtain the Sorbic Acid crude product, present method raw material cost cheap and easy to get is low, and yield is higher has economic benefit preferably.
Owing to adopting acidolysis, produce in acidolysis, washing process and contain in a large number hydrochloric acid, tar, aldehyde, and the hc effluent of the material such as ester aldehyde, after these materials enter water body, not only suppress the growth of organism in water, and carry out bio-oxidation and a large amount of dissolved oxygen of chemical oxidation needs, environment is caused severe contamination.
Traditional treatment process for concentration of hydrochloric acid in sorbic acid production wastewater high and Sorbic Acid to the inhibited characteristics of microorganism, at first carry out liquid caustic soda neutralization-precipitation process, and the pH value of waste water is brought up to 7～8, then advance again biochemical system and process after the processing such as flocculation, evaporation, dilution.Neutralize with liquid caustic soda,
Main drawback is not only to use the waste water total amount to increase by 15%, increases by 10% processing cost; The sodium-chlor that forms is tied wall in concentration process serious, causes heat-exchange equipment to stop up serious, and greatly shorten working life; And the haline water after concentrated can't process, and has secondary pollution,Adopt PAC to flocculate, consumption is large, effect is undesirable, and the haline water that this technique not only produces after evaporation is difficult to process, and whole working cost is higher, consume a large amount of raw materials, very uneconomical, the more important thing is along with the original effluent index of the appearance of new emission standard can't satisfy emission request, when therefore exploring a kind of new treatment process solution economic benefit and environmental benefit, stop secondary pollution, realize that the effective processing of pollutent is imperative.
Summary of the invention
the object of the invention is to, overcome the deficiencies in the prior art, a kind of sorbic acid wastewater treatment treatment process is provided, utilize bicarbonate of ammonia carry out in and waste water in hydrochloric acid, produce the great amount of carbon dioxide bubble in N-process, form air supporting effect general tar formation density wherein less than the greasy filth solid of liquid phase, by oil removal machine, greasy filth is removed, again through adding the zwitter-ion polyacrylamide flocculant to remove most organism, then add a certain amount of gac to decolour, remove wherein colourity and COD, by the RO technology, ammonium chloride solution is carried out concentrate again, remove wherein moisture by triple effect evaporation at last, obtain qualified ammonium chloride product, not only turn waste into wealth by this technology, created considerable economic benefit, and realized the thorough improvement of sorbic acid wastewater treatment.
Technical scheme of the present invention is: a kind of sorbic acid wastewater treatment treatment process comprises the following steps:
1) in and air supporting: add bicarbonate of ammonia in sorbic acid wastewater treatment, make the pH value of waste water reach 6.5-7, remove the tar of separating out in reaction process, obtain containing the solution that mass percent is 10-12% ammonium chloride; Bicarbonate of ammonia and hydrochloric acid reaction generate ammonium chloride, water and carbonic acid gas, and reaction equation is as follows:
NH
4HCO
3+HCL
NH
4CL+CO
2+H
2O
Utilize in bicarbonate of ammonia and waste water in hydrochloric acid, produce the great amount of carbon dioxide bubble in N-process, form tar formation density that the air supporting effect will be wherein less than the greasy filth solid of liquid phase, by oil removal machine, greasy filth is removed.
2) flocculation: will add zwitter-ion polyacrylamide postprecipitation to obtain throw out and clear liquid in above-mentioned waste water; Add flocculation agent can remove most organism.The zwitter-ion polyacrylamide has active high, and consumption is few, and flocculation ability is strong, and is applied widely, and treatment effect is characteristics very significantly.
3) decolouring: add decolorizing with activated carbon in above-mentioned clear liquid; Activated carbon can be removed colourity and COD wherein.
4) membrane sepn: the filtrate after decolouring obtains the ammonium chloride solution that mass concentration is 25-30% after membrane filtration; Utilize reverse osmosis technology to carry out concentrate to ammonium chloride solution.Feed liquid to film one side is exerted pressure, and when pressure surpassed its osmotic pressure, solvent can be made inverse osmosis against the direction of naturally osmotic.Thereby the solvent that obtains seeing through in the low-tension side of film, i.e. penetrating fluid; The solution that the high-tension side obtains concentrating, i.e. concentrated solution.With reverse osmosis method process ammonium chloride solution be exactly under the effect of high-pressure pump with solution by special-purpose reverse osmosis membrane, obtain fresh water in the low-tension side of film, obtain the concentrated solution of ammonium chloride in the high-tension side.
5) evaporation concentration: the supersaturated solution that forms ammonium chloride after mentioned solution further concentrates through triple effect evaporation.
6) crystallization: obtain the brilliant product of qualified ammonium chloride after putting into the whizzer centrifuge dehydration after cooling.
Throw out in described step 2 obtains cotton-shaped mud and directly is sent to coal yard and mixes and carry out coking in coal after the pressure filter press filtration.
The temperature of reaction of described step 1 is the 25-30 degree, and the tar of separating out is taken out.
Described step 3 adds the activated carbon post-heating between 55-60 ℃, and insulation is opened the decolouring pump and played circulation after half an hour.
The resulting ammonium chloride mother liquor of described step 6 is got back to the membrane sepn operation and is recycled.
The concentrated water of membrane filtration and multiple-effect evaporation is used for the replenishment system cycling use of water.
The invention has the beneficial effects as follows: this production technique adopts the bicarbonate of ammonia neutralization and forms with carbonic acid gas the combination that extraordinary chemical reaction and physical process have been played in the air supporting effect, has realized the breakthrough of matter, is obtaining extraordinary effect aspect the tar removal.Native system adopts at present the concentrated reverse osmosis membrane of state-of-the-art special-purpose haline water in the industry, has dehydration rate high, and the advantage of long service life has extraordinary economic use value.This device utilizes the VCR technology of United States advanced, and the efficiency of steam improves greatly.Flow process, equipment that actual production proof technique adopts are reasonables, and not only flow process is reasonable, and is easy to operate, and quality product is very good.Giving up of producing in technological process all can be utilized effectively admittedly, realized the zero release of pollutent.No matter this treatment process is from quality product, pollutant emission, and economy all has extraordinary promotional value.
Description of drawings
Accompanying drawing 1 is process flow sheet of the present invention,
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
Embodiment
Embodiment 1
A kind of sorbic acid wastewater treatment treatment process is characterized in that: comprise the following steps:
1) in and air supporting: add bicarbonate of ammonia in sorbic acid wastewater treatment, make the pH value of waste water reach 6.5, pass into indirect steam and control temperature of reaction at 25 ℃, open the oil removal by air bubbling machine in reaction process the oil slick of separating out is scraped, obtain containing the solution that mass percent is 10% ammonium chloride;
2) flocculation: will add 0.6kg/ m in above-mentioned waste water
3Zwitter-ion polyacrylamide postprecipitation obtain throw out and clear liquid;
3) decolouring: in above-mentioned clear liquid
Press 40kg/ ton waterAdd activated carbon, be heated between 55 ℃, after being incubated half an hour, opening the decolouring recycle pump and play circulation;
4) membrane sepn: after filtrate clarification, clear filtrate is squeezed into the ammonium chloride medial launder, be sent to the RO operation through high-pressure pump and concentrate, obtain mass concentration after concentrated and be 25% ammonium chloride strong solution
5) evaporation concentration: the supersaturated solution that forms ammonium chloride after mentioned solution further concentrates through triple effect evaporation;
6) crystallization: obtain the brilliant product of qualified ammonium chloride after putting into the whizzer centrifuge dehydration after cooling.
Embodiment 2
A kind of sorbic acid wastewater treatment treatment process is characterized in that: comprise the following steps:
1) in and air supporting: add bicarbonate of ammonia in sorbic acid wastewater treatment, make the pH value of waste water reach 7, pass into indirect steam and control temperature of reaction at 30 ℃, open the oil removal by air bubbling machine in reaction process the oil slick of separating out is scraped, obtain containing the solution that mass percent is 12% ammonium chloride;
2) flocculation: will add 1.0kg/ m in above-mentioned waste water
3Zwitter-ion polyacrylamide postprecipitation obtain throw out and clear liquid;
3) decolouring: in above-mentioned clear liquid
Press 40kg/ ton waterAdd activated carbon, be heated to 60 ℃, after being incubated half an hour, opening the decolouring recycle pump and play circulation;
4) membrane sepn: after filtrate clarification, clear filtrate is squeezed into the ammonium chloride medial launder, be sent to the RO operation through high-pressure pump and concentrate, obtain mass concentration after concentrated and be 30% ammonium chloride strong solution;
5) evaporation concentration: the supersaturated solution that forms ammonium chloride after mentioned solution further concentrates through triple effect evaporation;
6) crystallization: obtain the brilliant product of qualified ammonium chloride after putting into the whizzer centrifuge dehydration after cooling.
Embodiment 3
A kind of sorbic acid wastewater treatment treatment process is characterized in that: comprise the following steps:
1) in and air supporting: add bicarbonate of ammonia in sorbic acid wastewater treatment, make the pH value of waste water reach 6.8, pass into indirect steam and control temperature of reaction at 28 ℃, open the oil removal by air bubbling machine in reaction process the oil slick of separating out is scraped, obtain containing the solution that mass percent is 11% ammonium chloride;
2) flocculation: will add the zwitter-ion polyacrylamide postprecipitation of 0.8kg/m3 to obtain throw out and clear liquid in above-mentioned waste water;
3) decolouring: in above-mentioned clear liquid
Press 40kg/ ton waterAdd activated carbon, be heated to 58 ℃, after being incubated half an hour, opening the decolouring recycle pump and play circulation;
4) membrane sepn: after filtrate clarification, clear filtrate is squeezed into the ammonium chloride medial launder, be sent to the RO operation through high-pressure pump and concentrate, obtain mass concentration after concentrated and be 28% ammonium chloride strong solution
5) evaporation concentration: the supersaturated solution that forms ammonium chloride after mentioned solution further concentrates through triple effect evaporation;
6) crystallization: obtain the brilliant product of qualified ammonium chloride after putting into the whizzer centrifuge dehydration after cooling.
Claims (4)
1. a sorbic acid wastewater treatment treatment process, is characterized in that: comprise the following steps:
1) in and air supporting: add bicarbonate of ammonia in sorbic acid wastewater treatment, make the pH value of waste water reach 6.5-7, pass into indirect steam and control temperature of reaction at 25-30 ℃, open the oil removal by air bubbling machine in reaction process the oil slick of separating out is scraped, obtain containing the solution that mass percent is 10-12% ammonium chloride;
2) flocculation: will add the zwitter-ion polyacrylamide postprecipitation of 0.6-1.0kg/m3 to obtain throw out and clear liquid in above-mentioned waste water;
3) decolouring: in above-mentioned clear liquid
Press 40kg/ ton waterAdd activated carbon, be heated between 55-60 ℃, after being incubated half an hour, opening the decolouring recycle pump and play circulation;
4) membrane sepn: after the filtrate clarification, clear filtrate is squeezed into the ammonium chloride medial launder, be sent to the RO operation through high-pressure pump and concentrate, obtain the ammonium chloride strong solution that mass concentration is 25-30% after concentrating
5) evaporation concentration: the supersaturated solution that forms ammonium chloride after mentioned solution further concentrates through triple effect evaporation;
6) crystallization: obtain the brilliant product of qualified ammonium chloride after putting into the whizzer centrifuge dehydration after cooling.
2. a kind of sorbic acid wastewater treatment treatment process according to claim 1, is characterized in that: the tar take-away of separating out in described step 1.
3. a kind of sorbic acid wastewater treatment treatment process according to claim 1 is characterized in that: the throw out in described step 2 obtains cotton-shaped mud and directly is sent to coal yard and mixes and carry out coking in coal after the pressure filter press filtration.
4. a kind of sorbic acid wastewater treatment treatment process according to claim 1, it is characterized in that: the resulting ammonium chloride mother liquor of described step 6 is got back to the membrane sepn operation and is recycled.
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| CN2013100452926A CN103121769A (en) | 2013-02-05 | 2013-02-05 | Sorbic acid wastewater treatment process |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104478148A (en) * | 2014-12-05 | 2015-04-01 | 山东新华制药股份有限公司 | Treatment technique of caffeine finished mother solution |
| CN105000673A (en) * | 2015-07-03 | 2015-10-28 | 东北电力大学 | Method used for treating sorbic acid wastewater with Trichosporoncutaneum |
| CN105175244A (en) * | 2015-11-06 | 2015-12-23 | 南通醋酸化工股份有限公司 | Recovery method of sorbic acid waste acid |
| CN106565049A (en) * | 2016-11-08 | 2017-04-19 | 河南顺天生物科技有限公司 | Nicotine production waste water flocculating decolorizaiton and evaporation membrane treatment technology |
| CN108128870A (en) * | 2018-01-30 | 2018-06-08 | 云南大学 | A kind of minimizing technology of Arsenic in Drinking Water |
| CN108249460A (en) * | 2018-01-13 | 2018-07-06 | 安徽金禾实业股份有限公司 | In a kind of Sucralose and the processing method of press filtration workshop section ammonium chloride waste residue |
| CN111109253A (en) * | 2019-12-20 | 2020-05-08 | 蚌埠市鑫晟新材料科技有限公司 | Preparation method of antibacterial material for papermaking |
| CN114684986A (en) * | 2020-12-31 | 2022-07-01 | 南通醋酸化工股份有限公司 | Resource utilization method of sorbic acid wastewater |
| CN114736704A (en) * | 2022-05-17 | 2022-07-12 | 金能科技股份有限公司 | Method and device for treating sorbic acid waste |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104478148A (en) * | 2014-12-05 | 2015-04-01 | 山东新华制药股份有限公司 | Treatment technique of caffeine finished mother solution |
| CN105000673A (en) * | 2015-07-03 | 2015-10-28 | 东北电力大学 | Method used for treating sorbic acid wastewater with Trichosporoncutaneum |
| CN105000673B (en) * | 2015-07-03 | 2017-01-25 | 东北电力大学 | Method used for treating sorbic acid wastewater with Trichosporoncutaneum |
| CN105175244A (en) * | 2015-11-06 | 2015-12-23 | 南通醋酸化工股份有限公司 | Recovery method of sorbic acid waste acid |
| CN105175244B (en) * | 2015-11-06 | 2017-03-29 | 南通醋酸化工股份有限公司 | A kind of recovery and treatment method of sorbic acid spent acid |
| CN106565049A (en) * | 2016-11-08 | 2017-04-19 | 河南顺天生物科技有限公司 | Nicotine production waste water flocculating decolorizaiton and evaporation membrane treatment technology |
| CN108249460A (en) * | 2018-01-13 | 2018-07-06 | 安徽金禾实业股份有限公司 | In a kind of Sucralose and the processing method of press filtration workshop section ammonium chloride waste residue |
| CN108128870A (en) * | 2018-01-30 | 2018-06-08 | 云南大学 | A kind of minimizing technology of Arsenic in Drinking Water |
| CN111109253A (en) * | 2019-12-20 | 2020-05-08 | 蚌埠市鑫晟新材料科技有限公司 | Preparation method of antibacterial material for papermaking |
| CN114684986A (en) * | 2020-12-31 | 2022-07-01 | 南通醋酸化工股份有限公司 | Resource utilization method of sorbic acid wastewater |
| CN114736704A (en) * | 2022-05-17 | 2022-07-12 | 金能科技股份有限公司 | Method and device for treating sorbic acid waste |
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Application publication date: 20130529 |