CN103482809A - Technology for realizing zero discharge of waste water caused by white carbon black production - Google Patents
Technology for realizing zero discharge of waste water caused by white carbon black production Download PDFInfo
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- CN103482809A CN103482809A CN201310375673.0A CN201310375673A CN103482809A CN 103482809 A CN103482809 A CN 103482809A CN 201310375673 A CN201310375673 A CN 201310375673A CN 103482809 A CN103482809 A CN 103482809A
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Abstract
The invention discloses a technology for realizing zero discharge of waste water caused by white carbon black production. The technology is characterized by comprising the steps: 1, firstly, filtering the waste water caused by white carbon black production by a ceramic membrane to obtain ceramic membrane dialyzate and ceramic membrane concentrated liquid; 2, carrying out plate-frame pressure filtration on the ceramic membrane concentrated liquid to obtain filter residue which is silicon dioxide, recycling the silicon dioxide, enabling filter press water to enter a collecting tank and carrying out circulating treatment on the filter press water; 3, carrying out primary nanofiltration on the ceramic membrane dialyzate, collecting primary nanofiltration concentrated liquid to obtain sodium sulfate concentrated liquid, and carrying out evaporation and concentration to obtain sodium sulfate; and 4, carrying out primary reverse osmosis on primary nanofiltration dialyzate to obtain primary reverse osmosis dialyzate and primary reverse osmosis concentrated liquid, and carrying out evaporation and concentration on the primary reverse osmosis concentrated liquid to obtain sodium sulfate, wherein the primary reverse osmosis dialyzate is produced water and is recycled for white carbon black production. The technology has the beneficial effects that the operation cost is low; inorganic salts and water resources can be recycled, and zero discharge and a win-win situation of environmental protection benefit and economic benefit can be realized.
Description
Technical field
The present invention relates to method of wastewater treatment, particularly a kind of white carbon black production process without drainage of waste water.
Background technology
In prior art, the production method of white carbon black, show according to data both domestic and external, is mainly the precipitator method and the large type of vapor phase process two.Because the precipitator method are raw materials used cheap, be easy to get, production technique and equipment are comparatively simple, and the product price is low, thereby occupies an leading position at present.
The precipitator method claim again wet method, and main raw material(s) is quartz sand, soda ash, technical hydrochloric acid or sulfuric acid or nitric acid or carbonic acid gas.Its operational path is substantially: first adopt fuel oil or fat coal at high temperature quartz sand to be reacted with soda ash and makes service water glass, service water glass water is mixed with certain density dilute solution, then add certain acid under certain condition, make precipitation of silica out, then through cleaning, filter, dry (drying or spraying), pulverize, make the product white carbon black.
Producing a large amount of press filtration mother liquor of water, filter cake wash water, washing equipment and the surface water in the process of white carbon black discharges, this waste water and be acid (pH=5-7), in existing treatment process, be mainly by adding a large amount of Wingdales to be neutralized, produce a large amount of solid wastes, after the supernatant liquor simple process, efflux, also contain a large amount of sodium sulfate, environment is caused and has a strong impact on.
Summary of the invention
For the problems referred to above, the invention provides and a kind ofly can realize zero release, and can reclaim the sodium sulfate in waste water, the white carbon black production process without drainage of waste water of silicon-dioxide.
For achieving the above object, technical scheme proposed by the invention is: a kind of white carbon black production process without drainage of waste water is characterized in that: described technique comprises the steps:
Step 1, at first white carbon black production waste water carry out ceramic membrane filter, obtains ceramic membrane dialyzate and ceramic membrane concentrated solution;
Step 2: the ceramic membrane concentrated solution is carried out to filter press, and filter residue is silicon-dioxide, recycles, and press filtration water enters circular treatment in collecting tank;
Step 3: the ceramic membrane dialyzate carries out the one-level nanofiltration, collects one-level nanofiltration concentrated solution and obtains the sodium sulfate concentrated solution, and evaporation concentration obtains sodium sulfate;
Step 4: one-level nanofiltration dialyzate carries out first-stage reverse osmosis, obtains first-stage reverse osmosis dialyzate and first-stage reverse osmosis concentrated solution, and the first-stage reverse osmosis dialyzate is product water, and reuse is white carbon black production, and the first-stage reverse osmosis concentrated solution carries out evaporation concentration and obtains sodium sulfate.
Further, described white carbon black production process without drainage of waste water, also comprise the first-stage reverse osmosis concentrated solution carried out to the secondary nanofiltration, obtains the step of secondary nanofiltration dialyzate and secondary nanofiltration concentrated solution; Described secondary nanofiltration concentrated solution carries out evaporation concentration and obtains sodium sulfate, and described secondary nanofiltration dialyzate carries out two-pass reverse osmosis, and described two-pass reverse osmosis concentrated solution carries out evaporation concentration and obtains sodium sulfate, and the two-pass reverse osmosis dialyzate is product water and is back to production.
Further, the ceramic membrane filter aperture that described ceramic membrane filter adopts is 50-200nm.
Further, the molecular weight cut-off of the nanofiltration membrane in described one-level nanofiltration, secondary nanofiltration is 150-300 dalton.
Adopt technique scheme, white carbon black production process without drainage of waste water of the present invention, adopt the coupled film separating technology, and for the white carbon black production wastewater treatment, with respect to traditional treatment method (ion exchange method, freeze-drying), the beneficial effect had is:
1) running cost is lower;
2) recyclable inorganic salt, realize cleaner production, embodies efficiency of cycling economy;
3) recyclable water resources, realize zero release, realizes environmental benefit, economic benefit doulbe-sides' victory;
4) the system floor space is little, and favourable enterprise expands production;
5) the system extension malleability is strong, only needs to increase membrane stack and get final product when needs are expanded production;
6) the system automatic control degree is high, easy and simple to handle, reduces work load and saves labor cost.
The accompanying drawing explanation
Fig. 1 is white carbon black production process without drainage of waste water schema of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
As shown in Figure 1, a kind of white carbon black production process without drainage of waste water, comprise the steps:
Step 1, at first white carbon black production waste water carry out ceramic membrane filter, obtains ceramic membrane dialyzate and ceramic membrane concentrated solution;
Step 2: the ceramic membrane concentrated solution is carried out to filter press, and filter residue is silicon-dioxide, recycles, and press filtration water enters circular treatment in collecting tank;
Step 3: the ceramic membrane dialyzate carries out the one-level nanofiltration, collects one-level nanofiltration concentrated solution and obtains the sodium sulfate concentrated solution, and evaporation concentration obtains sodium sulfate;
Step 4: one-level nanofiltration dialyzate carries out first-stage reverse osmosis, obtains first-stage reverse osmosis dialyzate and first-stage reverse osmosis concentrated solution, and the first-stage reverse osmosis dialyzate is product water, and reuse is white carbon black production, and the first-stage reverse osmosis concentrated solution carries out evaporation concentration and obtains sodium sulfate;
Step 5: the first-stage reverse osmosis concentrated solution is carried out to the secondary nanofiltration, obtain the step of secondary nanofiltration dialyzate and secondary nanofiltration concentrated solution; Described secondary nanofiltration concentrated solution carries out evaporation concentration and obtains sodium sulfate;
Step 6: described secondary nanofiltration dialyzate carries out two-pass reverse osmosis, and described two-pass reverse osmosis concentrated solution carries out evaporation concentration and obtains sodium sulfate, and the two-pass reverse osmosis dialyzate is product water and is back to production.
Further, the ceramic membrane filter aperture that described ceramic membrane filter adopts is 50-200nm.
Further, the molecular weight cut-off of the nanofiltration membrane in described one-level nanofiltration, secondary nanofiltration is 150-300 dalton.
By above-mentioned technique for the white carbon black production wastewater treatment, before processing and the water quality situation in treating processes as following table.
Table one: detect water quality in waste water as follows respectively:
Table two: detect water quality through the ceramic membrane ultrafitration dialyzate as follows:
Table three: detect water quality through the ceramic membrane ultrafitration concentrated solution as follows:
Table four: it is as follows that one-level nanofiltration dialyzate detects water quality:
Table five: it is as follows that one-level nanofiltration system concentrated solution detects water quality:
Table six: it is as follows that first-stage reverse osmosis system dialyzate detects water quality:
Table seven: it is as follows that first-stage reverse osmosis system concentrated solution detects water quality:
Table eight: it is as follows that secondary nanofiltration system dialyzate detects water quality:
Table nine: it is as follows that secondary nanofiltration system concentrated solution detects water quality:
Table ten: it is as follows that the two-stage reverse osmosis system dialyzate detects water quality:
Table ten one: it is as follows that the reverse osmosis system concentrated solution detects water quality:
Adopt technique of the present invention, for the white carbon black production wastewater treatment, can reclaim the product silicon-dioxide in waste water; And by the sodium sulfate enrichment in water body: sodium sulphate content after concentrated >=10%; Produce water water-quality guideline: total salt content≤400mg/L, as production technique washing water or other technique process waters; The terminal reuse water accounts for more than 65% of total inflow; The dense water of sodium sulfate enters evaporation concentration system and is processed, and obtains sodium sulfate crystal solid (more than purity to 98%).
Claims (4)
1. a white carbon black production process without drainage of waste water, it is characterized in that: described technique comprises the steps:
Step 1, at first white carbon black production waste water carry out ceramic membrane filter, obtains ceramic membrane dialyzate and ceramic membrane concentrated solution;
Step 2: the ceramic membrane concentrated solution is carried out to filter press, and filter residue is silicon-dioxide, recycles, and press filtration water enters circular treatment in collecting tank;
Step 3: the ceramic membrane dialyzate carries out the one-level nanofiltration, collects one-level nanofiltration concentrated solution and obtains the sodium sulfate concentrated solution, and evaporation concentration obtains sodium sulfate;
Step 4: one-level nanofiltration dialyzate carries out first-stage reverse osmosis, obtains first-stage reverse osmosis dialyzate and first-stage reverse osmosis concentrated solution, and the first-stage reverse osmosis dialyzate is product water, and reuse is white carbon black production, and the first-stage reverse osmosis concentrated solution carries out evaporation concentration and obtains sodium sulfate.
2. a kind of white carbon black production process without drainage of waste water according to claim 1, it is characterized in that: described white carbon black production process without drainage of waste water, also comprise the first-stage reverse osmosis concentrated solution is carried out to the secondary nanofiltration, obtain the step of secondary nanofiltration dialyzate and secondary nanofiltration concentrated solution; Described secondary nanofiltration concentrated solution carries out evaporation concentration and obtains sodium sulfate, and described secondary nanofiltration dialyzate carries out two-pass reverse osmosis, and described two-pass reverse osmosis concentrated solution carries out evaporation concentration and obtains sodium sulfate, and the two-pass reverse osmosis dialyzate is product water and is back to production.
3. a kind of white carbon black production process without drainage of waste water according to claim 1 and 2 is characterized in that: the ceramic membrane filter aperture that described ceramic membrane filter adopts is 50-200nm.
4. a kind of white carbon black production process without drainage of waste water according to claim 1 and 2, it is characterized in that: the molecular weight cut-off of the nanofiltration membrane in described one-level nanofiltration, secondary nanofiltration is 150-300 dalton.
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103819037A (en) * | 2014-02-27 | 2014-05-28 | 南昌航空大学 | Comprehensive utilization method for recycling white carbon black waste water by precipitation method |
| CN104724873A (en) * | 2015-03-04 | 2015-06-24 | 四川理工学院 | Method for realizing zero discharge and resource utilization of production waste water of white carbon black |
| CN105776712A (en) * | 2016-05-10 | 2016-07-20 | 中国科学院生态环境研究中心 | Method for deep treatment and salt recovery of textile dying wastewater and used system |
| CN106044951A (en) * | 2016-07-25 | 2016-10-26 | 江苏久吾高科技股份有限公司 | Recycling method and device of industrial acidic wastewater |
| CN106698859A (en) * | 2017-02-23 | 2017-05-24 | 扬州工业职业技术学院 | Method and device for purifying high salt water |
| CN107814457A (en) * | 2017-12-11 | 2018-03-20 | 广州叶林环保科技有限公司 | A kind of carbon black leaches inorganic salt treatment evaporative crystallization technique |
| CN110002655A (en) * | 2019-05-13 | 2019-07-12 | 山东金汇膜科技股份有限公司 | A kind of silica gel Wastewater zero-discharge treatment system |
| CN110092519A (en) * | 2019-05-13 | 2019-08-06 | 山东金汇膜科技股份有限公司 | A kind of silica gel wastewater treatment method |
| CN110436495A (en) * | 2019-08-22 | 2019-11-12 | 四川思达能环保科技有限公司 | Alumina producing Bayer process mother liquor treatment process and system |
| CN111807596A (en) * | 2020-08-27 | 2020-10-23 | 潍坊美好生活环保科技有限公司 | Process method for treating precipitated white carbon black wastewater |
| CN113044859A (en) * | 2021-02-23 | 2021-06-29 | 四川思达能环保科技有限公司 | Method for recovering sodium sulfate from white carbon black feed liquid |
| CN113443733A (en) * | 2021-08-30 | 2021-09-28 | 湖南科尔顿水务有限公司 | Automatic change thing networking water processing system |
| CN114291955A (en) * | 2022-01-18 | 2022-04-08 | 龙佰集团股份有限公司 | Method for jointly utilizing iron pigment wastewater and reduced titanium tail gas |
| CN110002655B (en) * | 2019-05-13 | 2024-04-26 | 山东金汇膜科技股份有限公司 | Zero release processing system of silica gel waste water |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103819037A (en) * | 2014-02-27 | 2014-05-28 | 南昌航空大学 | Comprehensive utilization method for recycling white carbon black waste water by precipitation method |
| CN104724873A (en) * | 2015-03-04 | 2015-06-24 | 四川理工学院 | Method for realizing zero discharge and resource utilization of production waste water of white carbon black |
| CN105776712A (en) * | 2016-05-10 | 2016-07-20 | 中国科学院生态环境研究中心 | Method for deep treatment and salt recovery of textile dying wastewater and used system |
| CN106044951B (en) * | 2016-07-25 | 2022-11-15 | 江苏久吾高科技股份有限公司 | Method and device for recycling industrial acidic wastewater |
| CN106044951A (en) * | 2016-07-25 | 2016-10-26 | 江苏久吾高科技股份有限公司 | Recycling method and device of industrial acidic wastewater |
| CN106698859A (en) * | 2017-02-23 | 2017-05-24 | 扬州工业职业技术学院 | Method and device for purifying high salt water |
| CN107814457A (en) * | 2017-12-11 | 2018-03-20 | 广州叶林环保科技有限公司 | A kind of carbon black leaches inorganic salt treatment evaporative crystallization technique |
| CN110002655A (en) * | 2019-05-13 | 2019-07-12 | 山东金汇膜科技股份有限公司 | A kind of silica gel Wastewater zero-discharge treatment system |
| CN110092519A (en) * | 2019-05-13 | 2019-08-06 | 山东金汇膜科技股份有限公司 | A kind of silica gel wastewater treatment method |
| CN110092519B (en) * | 2019-05-13 | 2020-05-05 | 山东金汇膜科技股份有限公司 | Silica gel wastewater treatment method |
| CN110002655B (en) * | 2019-05-13 | 2024-04-26 | 山东金汇膜科技股份有限公司 | Zero release processing system of silica gel waste water |
| CN110436495A (en) * | 2019-08-22 | 2019-11-12 | 四川思达能环保科技有限公司 | Alumina producing Bayer process mother liquor treatment process and system |
| CN111807596A (en) * | 2020-08-27 | 2020-10-23 | 潍坊美好生活环保科技有限公司 | Process method for treating precipitated white carbon black wastewater |
| CN113044859A (en) * | 2021-02-23 | 2021-06-29 | 四川思达能环保科技有限公司 | Method for recovering sodium sulfate from white carbon black feed liquid |
| CN113443733A (en) * | 2021-08-30 | 2021-09-28 | 湖南科尔顿水务有限公司 | Automatic change thing networking water processing system |
| CN114291955A (en) * | 2022-01-18 | 2022-04-08 | 龙佰集团股份有限公司 | Method for jointly utilizing iron pigment wastewater and reduced titanium tail gas |
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