CN104445721B - A kind of stearate waste water combination treatment method - Google Patents
A kind of stearate waste water combination treatment method Download PDFInfo
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- CN104445721B CN104445721B CN201410661963.6A CN201410661963A CN104445721B CN 104445721 B CN104445721 B CN 104445721B CN 201410661963 A CN201410661963 A CN 201410661963A CN 104445721 B CN104445721 B CN 104445721B
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- stearate
- waste water
- barium
- zinc
- zinc stearate
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Removal Of Specific Substances (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a kind of special stearate waste water combination treatment method, its innovative point is: described stearate waste water comprises zinc stearate waste water and barium stearate waste water, regulating the pH value of zinc stearate waste water to produce with liquid sodium hydroxide precipitates, by regulate after, the zinc stearate waste water that barium stearate wastewater flow rate is 1.5～2 times joins and in barium stearate wastewater disposal basin, carries out Combined Treatment, mix 20 minutes, finally obtain only sodium chloride-containing and sodium sulphate, and the factory effluent of qualified transparent mixed solution. The present invention is by Combined Treatment zinc stearate and barium stearate waste water; solve barium stearate discharge of wastewater problem; whole operating process is easy without cross pollution; and utilize equipment simple; without increasing fringe cost; when protection of the environment, bring enterprise and there is very large social benefit, be worth stearate industry to be promoted.
Description
Technical field
The present invention relates to a kind of stearate waste water combination treatment method, belong to chemicals production field.
Background technology
The producer that produces stearate, generally all can produce several stearic acid such as calcium stearate, zinc stearate, barium stearateSalt. General, zinc stearate can be used as heat stabilizer; Lubricant; Lubricating grease; Promoter; Thickener etc. For example generally can be used asPolyvinyl chloride resin heat stabilizer. For general industry transparent article; With calcium soap use, can be used for nontoxic goods, general this product is used forSoft goods, but in recent years started with hard transparent article as mineral water bottle, the goods such as upper hose, this product lubricity is good, Ke YigaiPhenomenon is separated out in kind fouling, also can be used as lubricant, releasing agent, and the flatting agent of paint, the additive of coating.
Double decomposition is produced the waste water that zinc stearate certainly leads to a large amount of contains sodium sulfate; And produce barium stearate with double decompositionMethod cost is minimum, and double decomposition barium stearate is produced the barium stearate waste water that will inevitably produce chloride containing barium, and barium stearate is uselessWater treatment is cumbersome, and environmental protection work must be firmly grasped, and can not allow the discharge of wastewater of chloride containing barium, but at such back of the bodyUnder scape, for the method for wastewater treatment of stearate, still do not report at present.
Summary of the invention
The object of the invention is to for deficiency of the prior art, a kind of special stearate waste water Combined Treatment is providedMethod, whole operating process is easy without cross pollution, and utilizes equipment simple, without increasing fringe cost, protection of the environment sameTime, bring enterprise and there is very large social benefit, be worth stearate industry to be promoted.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of special stearate waste water is combined placeReason method, its innovative point is: described stearate waste water comprises zinc stearate waste water and barium stearate waste water, uses liquid hydrogen-oxygenChange sodium and regulate the pH value of zinc stearate waste water to produce precipitation, by after regulating, and the mol ratio of giving money as a gift is barium stearate wastewater flow rate 1.5The zinc stearate waste water of～2 times joins in barium stearate wastewater disposal basin and carries out Combined Treatment, mixes 20 minutes, finally obtainsOnly sodium chloride-containing and sodium sulphate, and the factory effluent of qualified transparent mixed solution.
Further, it is specific as follows that zinc stearate waste water regulates the step of processing:
(1) zinc stearate waste water, through floating pool, enters No. 1 filter and separates, and filters the part solid stearic acid obtainingZinc, is back to zinc stearate production system and re-uses; The filtrate that filtration obtains is sent into zinc stearate wastewater collection pond, and usesLiquid sodium hydroxide regulates pH value to 9～9.5 in zinc stearate wastewater collection pond, and the chemical reaction that this step occurs is ZnSO4+2NaOH=Na2SO4+Zn(OH)2↓；
(2) filtrate in step (1) is passed through to No. 2 filters, the hydroxide that cutting out partial is generated by excess sulfuric acid zincZinc, the zinc hydroxide of separating discharges without solid slag after concentrating, as the raw material of production one-step method zinc stearate; Liquid portionBeing distributed into main component is the zinc stearate waste water circulating pool of aqueous sodium persulfate solution.
Further, before described Combined Treatment step, increase the pre-treatment step of barium stearate waste water, specific as follows:
(1) by barium stearate waste water process floating pool, separate by No. 3 filters, filter and obtain part of stearic acid barium, returnRe-use to barium stearate production system; The filtrate that filtration obtains is sent into barium stearate wastewater collection pond.
Further, described Combined Treatment step is specific as follows:
(1) by calculating after treatment, and the mol ratio of giving money as a gift is the zinc stearate waste water of 1.5 times of barium stearate wastewater flow ratesFrom zinc stearate waste water circulating pool, pump into barium stearate wastewater collection pond, mix 20 minutes, the chemistry that this step occursReaction is BaCl2+Na2SO4=2NaCl+BaSO4↓；
(2) composite waste in step (1) is filtered through No. 4 filters, the solid sulphuric acid barium that isolated by filtration produces is receivedAfter collection, be sold to coating factory, filtrate is sent into barium stearate discharge of wastewater pond, and filtrate is now that composition is sodium chloride and sodium sulphate,And transparent mixed aqueous solution, the waste water in barium stearate discharge of wastewater pond is discharged to sewage treatment plant.
Beneficial effect of the present invention is as follows:
(1) the present invention, by Combined Treatment zinc stearate and barium stearate waste water, solves barium stearate discharge of wastewater problem,Whole operating process is easy without cross pollution, and utilizes equipment simple, without increasing fringe cost, and when protection of the environment, bandThere is very large social benefit to enterprise, be worth stearate industry to be promoted.
(2) the present invention, by a series of known chemical reactions and technical finesse, utilizes the distinctive equipment of stearate industryAnd workflow, Combined Treatment zinc stearate and barium stearate waste water, eliminate zinc ion and stearic acid in zinc stearate waste waterBarium ions in barium waste water, reclaims available resources and recycles, and when saving production cost, has reached and has reduced rowPut the object of protection of the environment.
Detailed description of the invention
Below in conjunction with specific embodiment, technical scheme of the present invention is elaborated.
Embodiment 1
A kind of special stearate waste water combination treatment method, is specially the connection of zinc stearate waste water and barium stearate waste waterClose processing, first regulate the pH value of zinc stearate waste water to produce precipitation with liquid sodium hydroxide, by after regulating, and give money as a gift moleThan joining in barium stearate wastewater disposal basin and carry out Combined Treatment for the zinc stearate waste water of 1.5 times of barium stearate wastewater flow rates, mixEven 20 minutes, finally obtain only sodium chloride-containing and sodium sulphate, and the factory effluent of qualified transparent mixed solution.
Concrete, zinc stearate waste water regulating step is:
(1) zinc stearate waste water, through floating pool, enters No. 1 filter and separates, and filters the part solid stearic acid obtainingZinc, is back to zinc stearate production system and re-uses; The filtrate that filtration obtains is sent into zinc stearate wastewater collection pond, and usesLiquid sodium hydroxide regulates the pH value to 9 in zinc stearate wastewater collection pond, and the chemical reaction that this step occurs is ZnSO4+2NaOH=Na2SO4+Zn(OH)2↓；
Filtrate in step (1) is passed through to No. 2 filters, the zinc hydroxide that cutting out partial is generated by excess sulfuric acid zinc,The zinc hydroxide of separating discharges without solid slag after concentrating, as the raw material of production one-step method zinc stearate; Liquid partSending into main component is the zinc stearate waste water circulating pool of aqueous sodium persulfate solution.
Concrete, Combined Treatment step is specific as follows:
(1) by calculating after treatment, and the mol ratio of giving money as a gift is the zinc stearate waste water of 1.5 times of barium stearate wastewater flow ratesFrom zinc stearate waste water circulating pool, pump into barium stearate wastewater collection pond, mix 20 minutes, the chemistry that this step occursReaction is BaCl2+Na2SO4=2NaCl+BaSO4↓；
(2) composite waste in step (1) is filtered through No. 4 filters, the solid sulphuric acid barium that isolated by filtration produces is receivedAfter collection, be sold to coating factory, filtrate is sent into barium stearate discharge of wastewater pond, and filtrate is now that composition is sodium chloride and sodium sulphate,And transparent mixed aqueous solution, the waste water in barium stearate discharge of wastewater pond is discharged to sewage treatment plant.
Waste water in barium stearate discharge of wastewater pond after last Combined Treatment is carried out to the inspection of conventional chemical ion, proveIn waste water, without zinc ion and barium ions, be up to the standards.
Embodiment 2
On the basis of embodiment 1, before Combined Treatment step, increase the pre-treatment step of barium stearate waste water, barium stearateThe pre-treatment step of waste water is specific as follows: barium stearate waste water, through floating pool, is separated by No. 3 filters, and filtration obtainsPart solid barium stearate, is back to barium stearate production system and re-uses; The filtrate that filtration obtains is sent into barium stearateWastewater collection pond, all the other operations are identical with embodiment 1, only change some parameter setting, are specially: by after regulating, and give money as a giftMol ratio is that the zinc stearate waste water of 2 times of barium stearate wastewater flow rates joins and in barium stearate wastewater disposal basin, carries out Combined Treatment, liquidBody NaOH regulates the pH value to 9.5 in zinc stearate wastewater collection pond.
The present embodiment reclaims the solid barium stearate in barium stearate waste water, is back to barium stearate production system and carries out weightNew utilization, economizes on resources, and recycling, reduces production costs, and ensures sustainable production, through inspection, prove in waste water without zinc fromSon and barium ions, be up to the standards.
More than show and described general principle of the present invention and principal character and advantage of the present invention. The technology of the industryPersonnel should understand, and the present invention is not restricted to the described embodiments, and the just explanation of describing in above-described embodiment and description originallyThe principle of invention, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, these changesChange and improve and all fall in the claimed scope of the invention. The claimed scope of the present invention by appending claims andEquivalent defines.
Claims (4)
1. a special stearate waste water combination treatment method, is characterized in that: described stearate waste water comprises stearic acidZinc waste water and barium stearate waste water, regulate the pH value of zinc stearate waste water to produce precipitation with liquid sodium hydroxide, by after adjusting,And the mol ratio of giving money as a gift is that the zinc stearate waste water of 1.5～2 times of barium stearate wastewater flow rates joins in barium stearate wastewater collection pondCarry out Combined Treatment, mix 20 minutes, finally obtain only sodium chloride-containing and sodium sulphate, and qualified transparent mixed solutionFactory effluent.
2. special stearate waste water combination treatment method according to claim 1, is characterized in that: zinc stearate waste waterRegulate the step of processing specific as follows:
(1) zinc stearate waste water, through floating pool, enters No. 1 filter and separates, and filters the part solid zinc stearate obtaining, and returnsRe-use to zinc stearate production system; The filtrate that filtration obtains is sent into zinc stearate wastewater collection pond, and uses liquidNaOH regulates pH value to 9～9.5 in zinc stearate wastewater collection pond, and the chemical reaction that this step occurs is ZnSO4+2NaOH=Na2SO4+Zn(OH)2↓；
(2) filtrate in step (1) is passed through to No. 2 filters, the zinc hydroxide that cutting out partial is generated by excess sulfuric acid zinc, pointAfter concentrating, discharges without solid slag zinc hydroxide out, as the raw material of production one-step method zinc stearate; Liquid part is sentEntering main component is the zinc stearate waste water circulating pool of aqueous sodium persulfate solution.
3. special stearate waste water combination treatment method according to claim 1, is characterized in that: described Combined TreatmentBefore step, increase the pre-treatment step of barium stearate waste water, specific as follows:
(1) by barium stearate waste water process floating pool, separate by No. 3 filters, filter and obtain part of stearic acid barium, be back to hardResin acid barium production system re-uses; The filtrate that filtration obtains is sent into barium stearate wastewater collection pond.
4. special stearate waste water combination treatment method according to claim 1, is characterized in that: described Combined TreatmentStep is specific as follows:
(1) by calculating after treatment, and the mol ratio of giving money as a gift is the zinc stearate waste water of 1.5～2 times of barium stearate wastewater flow ratesFrom zinc stearate waste water circulating pool, pump into barium stearate wastewater collection pond, mix 20 minutes, the chemistry that this step occursReaction is BaCl2+Na2SO4=2NaCl+BaSO4↓；
(2) composite waste in step (1) is filtered through No. 4 filters, after the solid sulphuric acid barium that isolated by filtration produces is collectedBe sold to coating factory, filtrate is sent into barium stearate discharge of wastewater pond, and filtrate is now that composition is sodium chloride and sodium sulphate, and thoroughlyBright mixed aqueous solution, the waste water in barium stearate discharge of wastewater pond is discharged to sewage treatment plant.
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| CN201410661963.6A CN104445721B (en) | 2014-11-19 | 2014-11-19 | A kind of stearate waste water combination treatment method |
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| CN104445721B true CN104445721B (en) | 2016-05-11 |
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| CN105084593A (en) * | 2015-08-14 | 2015-11-25 | 霍春月 | Wastewater treatment method |
| CN105366841B (en) * | 2015-11-11 | 2018-02-16 | 杭州油脂化工有限公司 | A kind of method that double decomposition production stearate produces waste water recycling |
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| CN102757153B (en) * | 2012-07-12 | 2014-05-28 | 山东天兴生物科技有限公司 | Method for treating wastewater generated during production of 12-hydroxy stearic acid |
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