CN107954527A - A kind of recovery method of the waste water containing saltcake - Google Patents
A kind of recovery method of the waste water containing saltcake Download PDFInfo
- Publication number
- CN107954527A CN107954527A CN201711189546.6A CN201711189546A CN107954527A CN 107954527 A CN107954527 A CN 107954527A CN 201711189546 A CN201711189546 A CN 201711189546A CN 107954527 A CN107954527 A CN 107954527A
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- CN
- China
- Prior art keywords
- waste water
- level
- condensing device
- film condensing
- filter
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/34—Organic compounds containing oxygen
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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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)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a kind of recovery method of waste water containing saltcake, it is characterised in that：Set includes the Waste water concentrating system of self-cleaning filter, grade one filter, level-one film condensing device, secondary filter and two level film condensing device successively, and waste water containing saltcake is recycled successively.Pass through the method for the present invention, polyvinyl alcohol staple fiber in waste water containing saltcake, granule of polyvinyl alcohol can be isolated as to the use of polyvinyl alcohol raw material, waste water can be also converted into certain density metabisulfite solution and recycle-water at the same time, the two can serve as using between raw materials for production carriage return, saves raw material, reduces the production cost of vinal, alleviates treatment pressure of sewage.
Description
Technical field
The invention belongs to vinal technical field, and in particular to a kind of recovery method of waste water containing saltcake.
Background technology
Vinal is a kind of widely used organic synthetic fibers material, because its with good intensity, modulus,
The excellent performance such as antiacid alkali, soluble, available for fields such as concrete enhancing, papermaking, weaving, medicine.
Vinal be by polyvinyl alcohol by dissolving, filtering, deaeration, spinning, solidification, the technique such as heat treatment manufactures
Form.Vinal can produce substantial amounts of waste water in process of production, and it is short that sodium sulphate, polyvinyl alcohol are mainly contained in waste water
Fiber and micro polyvinylalcohol solids particle etc..These waste water are directly entered the department of biochemistry of existing sewage treatment plant substantially at present
System, since sulfate ion has inhibitory action to biochemical system, causes the increase of biochemical treatment difficulty, cost of sewage disposal increase.
And sodium sulphate, polyvinyl alcohol staple fiber and the particle in waste water can serve as raw material reuse, cause the waste of raw material, nothing
The production cost of vinal is added in shape, the generally speaking presence of the waste water containing saltcake considerably increases the production of company
Cost.
Therefore it provides a kind of recovery method of waste water containing saltcake, is that this area is urgently to be resolved hurrily to reduce company's production cost
The problem of.
The content of the invention
The present invention is the shortcoming present in order to avoid the above-mentioned prior art, there is provided a kind of waste water containing saltcake returns
Receiving method, by the production of its reuse to vinal, to reduce the production cost of vinal.
To solve technical problem, the present invention adopts the following technical scheme that：
The recovery method of the waste water of the invention containing saltcake, its feature are：Set Waste water concentrating system to waste water containing saltcake into
Row recycling, the Waste water concentrating system include self-cleaning filter, grade one filter, level-one film condensing device, two level mistake successively
Filter and two level film condensing device, specifically comprise the following steps：
(1) saltcake waste water will be contained and introduce Waste water concentrating system, self-cleaning filter is lifted into through booster pump supercharging, filters
Remove the polyvinyl alcohol staple fiber and part polyethylene alcohol particle in waste water containing saltcake；
(2) self-cleaning filter water outlet is lifted into grade one filter through booster pump supercharging and is filtered, gained filtrate
Level-one film condensing device is lifted into through booster pump supercharging；It is dense that the concentrated water produced after the processing of level-one film condensing device enters level-one
Water tank；
(3) concentrated water in level-one concentrated water case is lifted into secondary filter through booster pump supercharging and is filtered, gained filter
Liquid is lifted into two level film condensing device through booster pump supercharging；The concentrated water produced after the processing of two level film condensing device enters two level
Concentrated water case；
(4) permeate that level-one film condensing device and two level film condensing device produce flows into reuse pool；
(5) after Waste water concentrating system operation 15~20 days, system is cleaned and is conserved.
Specifically：In step (1), filter removal polyvinyl alcohol staple fiber and part polyethylene alcohol particle as polyethylene
Raw polyol is continuing with；Concentrated water main component in step (3) is metabisulfite solution, returns to workshop and is continuing with as raw material；
Permeate in step (4) returns to the washings use that polyvinyl alcohol raw material is made in workshop.
It is 580~650m by the flow that waste water containing saltcake introduces Waste water concentrating system in step (1)3/ d (preferably 600~
630m3/d)。
Step (1), the self-cleaning filter use well strainer, and filtering accuracy is 400~600 μm (preferably 450
~550 μm), material is high accuracy, the stainless steel of high intensity.
Step (2) and grade one filter, secondary filter in step (3) are used to remove impurity remaining in waste water, institute
The filtering accuracy for stating grade one filter is 50~70 μm (preferably 55~65 μm), the filtering accuracy of the secondary filter be 10~
20 μm (preferably 12~18 μm)；The grade one filter and the secondary filter all use big flow folding type filter element, filter core
Length is 500~1500mm (preferably 1000~1200mm), material is polypropylene.
Step (2) and level-one film condensing device, two level film condensing device in step (3) all use reverse osmosis membrane, surface
Micro-pore diameter is 0.5~10nm (preferably 2~5nm), material is cellulose acetate；Level-one film condensing device contains membrane component 12,
Two level film condensing device contains membrane component 8.
Cleaning in step (5) is to use soft water low-pressure washing to whole Waste water concentrating system, can concentrate two-stage film and fill
The high salt concentration put in concentrated water side is rinsed well, can not only be fallen the ion exchange of the high salinity of membrane component concentrated water side, and
And can in anti-locking system microorganism growth；Maintenance in step (5) is mainly clear using chemistry to two-stage film condensing device
The method washed is handled, and to recover the performance of film, different cleaning measures is taken according to different pollutant and film character, this
Cleaning solution used in invention is the cleaning solution that film condensing device carries.
Above-mentioned preference data, is that the present invention has carried out the experimental design of science and the experiment of system according to produce reality,
The optimal data of the treatment effect that is obtained.
Compared with the prior art, beneficial effects of the present invention are embodied in：
By the method for the present invention, the polyvinyl alcohol staple fiber in waste water containing saltcake, granule of polyvinyl alcohol can be isolated
It is used as the use of polyvinyl alcohol raw material, while waste water can be also converted into certain density metabisulfite solution and recycle-water, the two
It can serve as using between raw materials for production carriage return, save raw material, reduce the production cost of vinal, alleviate dirt
Water process pressure.
Embodiment
The exemplary embodiment of the present invention is illustrated below, so that advantages and features of the invention can be easier to by this
Field technology personnel understand.
Embodiment 1
The recovery method of the present embodiment waste water containing saltcake, concretely comprises the following steps：
(1) waste water containing saltcake is with 620m3The flow of/d enters Waste water concentrating system, and filtering is lifted into through booster pump supercharging
Precision is 500 μm of self-cleaning filter, and filtering removes adhesive polyvinyl alcohol staple fiber and part polyethylene alcohol in waste water
Particle；The polyvinyl alcohol staple fiber and granule of polyvinyl alcohol obtained returns to workshop as polyvinyl alcohol raw material and is continuing with.
(2) self-cleaning filter water outlet through booster pump supercharging be lifted into filtering accuracy be in 60 μm of grade one filter into
Row filtering, gained filtrate are lifted into level-one film condensing device (a diameter of 3nm of membrane component surface micropore) through booster pump supercharging；Through
The concentrated water produced after the processing of level-one film condensing device enters level-one concentrated water case；
(3) concentrated water in level-one concentrated water case is lifted into through booster pump supercharging in the secondary filter that filtering accuracy is 15 μm
Filtered, gained filtrate is lifted into two level film condensing device (a diameter of 3nm of membrane component surface micropore) through booster pump supercharging；
The concentrated water produced after the processing of two level film condensing device enters two level concentrated water case；
(4) permeate that level-one film condensing device and two level film condensing device produce flows into reuse pool, returns to workshop and makees
The washings of polyvinyl alcohol raw material use；
(5) after Waste water concentrating system operation 15 days, system is cleaned and is conserved.
The two level concentrated water that step (3) is obtained, can be reused for the production of vinal, and concrete mode is：Sampling
Concentrated water simultaneously detects its concentration, qualified if concentration is not less than 390g/L, can be directly added into coagulation bath, and addition does not surpass
The 10% of supersolidification body lotion sump volume；If concentration is less than 390g/L, coagulation bath vapo(u)rization system is sent into, is made after concentration qualification
With.
The polyvinyl alcohol staple fiber in waste water containing saltcake, granule of polyvinyl alcohol can be isolated by the method for the present invention
It is used as the use of polyvinyl alcohol raw material, while waste water can be also converted into certain density metabisulfite solution and recycle-water, the two
It can serve as using between raw materials for production carriage return, save raw material, reduce the production cost of vinal, alleviate dirt
Water process pressure.
The foregoing is merely the embodiment of the present invention, but protection scope of the present invention is not limited thereto, any
Those skilled in the art disclosed herein technical scope in, can without the change that creative work is expected or
Replace, should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be limited with claims
Subject to fixed protection domain.
Claims (6)
- A kind of 1. recovery method of waste water containing saltcake, it is characterised in that：Waste water concentrating system is set to return waste water containing saltcake Receive, the Waste water concentrating system includes self-cleaning filter, grade one filter, level-one film condensing device, secondary filter successively With two level film condensing device, specifically comprise the following steps：(1) saltcake waste water will be contained and introduce Waste water concentrating system, be lifted into self-cleaning filter through booster pump supercharging, filtering removes Polyvinyl alcohol staple fiber and part polyethylene alcohol particle in waste water containing saltcake；(2) self-cleaning filter water outlet is lifted into grade one filter through booster pump supercharging and is filtered, and gained filtrate is through increasing Press pump supercharging is lifted into level-one film condensing device；The concentrated water produced after the processing of level-one film condensing device enters level-one concentrated water Case；(3) concentrated water in level-one concentrated water case is lifted into secondary filter through booster pump supercharging and is filtered, gained filtrate warp Booster pump supercharging is lifted into two level film condensing device；The concentrated water produced after the processing of two level film condensing device enters two level concentrated water Case；(4) permeate that level-one film condensing device and two level film condensing device produce flows into reuse pool；(5) after Waste water concentrating system operation 15~20 days, system is cleaned and is conserved.
- 2. the recovery method of the waste water according to claim 1 containing saltcake, it is characterised in that：In step (1), removal is filtered Polyvinyl alcohol staple fiber and part polyethylene alcohol particle are continuing with as polyvinyl alcohol raw material；Concentrated water main component in step (3) is metabisulfite solution, returns to workshop and is continuing with as raw material；Permeate in step (4) returns to the washings use that polyvinyl alcohol raw material is made in workshop.
- 3. the recovery method of the waste water according to claim 1 containing saltcake, it is characterised in that：In step (1), saltcake will be contained and given up The flow that water introduces Waste water concentrating system is 580~650m3/d。
- 4. the recovery method of the waste water according to claim 1 containing saltcake, it is characterised in that：Step (1), the self-cleaning Filter uses well strainer, and filtering accuracy is 400~600 μm.
- 5. the recovery method of the waste water according to claim 1 containing saltcake, it is characterised in that：In step (2) and step (3) Grade one filter, secondary filter are used to remove impurity remaining in waste water, the filtering accuracy of the grade one filter for 50~ 70 μm, the filtering accuracy of the secondary filter be 10~20 μm.
- 6. the recovery method of the waste water according to claim 1 containing saltcake, it is characterised in that：In step (2) and step (3) Level-one film condensing device, two level film condensing device all use reverse osmosis membrane, and a diameter of 0.5~10nm of surface micropore, material are vinegar Acid cellulose；Level-one film condensing device contains membrane component 12, and two level film condensing device contains membrane component 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711189546.6A CN107954527A (en) | 2017-11-24 | 2017-11-24 | A kind of recovery method of the waste water containing saltcake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711189546.6A CN107954527A (en) | 2017-11-24 | 2017-11-24 | A kind of recovery method of the waste water containing saltcake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107954527A true CN107954527A (en) | 2018-04-24 |
Family
ID=61961985
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711189546.6A Pending CN107954527A (en) | 2017-11-24 | 2017-11-24 | A kind of recovery method of the waste water containing saltcake |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040124151A1 (en) * | 2000-12-12 | 2004-07-01 | Maxim, Llc, A Limited Liability Corporation | Fibrous protein adsorption of heavy metals |
| CN102992525A (en) * | 2012-12-05 | 2013-03-27 | 波鹰(厦门)科技有限公司 | Device and method thereof for recycling PVA (Polyvinyl Acetate) from desizing wastewater |
| CN203904080U (en) * | 2014-04-09 | 2014-10-29 | 杭州汇维仕永盛染整有限公司 | System for recovering PTA (purified terephthalic acid) during treatment of alkali-decrement wastewater |
| CN106145496A (en) * | 2016-08-03 | 2016-11-23 | 上海凯鑫分离技术股份有限公司 | The comprehensive utilization process of viscose fiber acid waste water |
| CN106745517A (en) * | 2016-11-30 | 2017-05-31 | 宜宾丝丽雅股份有限公司 | Treatment process of short fiber acidic wastewater |
| CN107213697A (en) * | 2017-07-05 | 2017-09-29 | 安徽皖维高新材料股份有限公司 | The recovery method and recovery system of finish in a kind of vinal production process |
-
2017
- 2017-11-24 CN CN201711189546.6A patent/CN107954527A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040124151A1 (en) * | 2000-12-12 | 2004-07-01 | Maxim, Llc, A Limited Liability Corporation | Fibrous protein adsorption of heavy metals |
| CN102992525A (en) * | 2012-12-05 | 2013-03-27 | 波鹰(厦门)科技有限公司 | Device and method thereof for recycling PVA (Polyvinyl Acetate) from desizing wastewater |
| CN203904080U (en) * | 2014-04-09 | 2014-10-29 | 杭州汇维仕永盛染整有限公司 | System for recovering PTA (purified terephthalic acid) during treatment of alkali-decrement wastewater |
| CN106145496A (en) * | 2016-08-03 | 2016-11-23 | 上海凯鑫分离技术股份有限公司 | The comprehensive utilization process of viscose fiber acid waste water |
| CN106745517A (en) * | 2016-11-30 | 2017-05-31 | 宜宾丝丽雅股份有限公司 | Treatment process of short fiber acidic wastewater |
| CN107213697A (en) * | 2017-07-05 | 2017-09-29 | 安徽皖维高新材料股份有限公司 | The recovery method and recovery system of finish in a kind of vinal production process |
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| PB01 | Publication | ||
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Application publication date: 20180424 |