CN105621757A - High-salt hardly-degradable industrial wastewater system and method - Google Patents
High-salt hardly-degradable industrial wastewater system and method Download PDFInfo
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- CN105621757A CN105621757A CN201511023132.7A CN201511023132A CN105621757A CN 105621757 A CN105621757 A CN 105621757A CN 201511023132 A CN201511023132 A CN 201511023132A CN 105621757 A CN105621757 A CN 105621757A
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- water
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- nanofiltration
- reverse osmosis
- electrodialysis
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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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
-
- 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
- C02F1/22—Treatment of water, waste water, or sewage by freezing
-
- 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
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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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
-
- 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
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4693—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
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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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
Abstract
The invention provides a high-salt hardly-degradable industrial wastewater system and method. The industrial wastewater treatment system comprises an ultrafiltration device, an electrodialysis device, a PH adjustor, a reverse osmosis device, a nanofiltration device and a crystallization device, wherein a produced water outlet of the ultrafiltration device is connected with the electrodialysis device; the electrodialysis device is used for realizing separation of organic matters and inorganic salts in water, wherein produced water is fed to the PH adjustor, and concentrated water is fed to the nanofiltration device; the PH adjustor is used for adjusting PH of the received produced water to be acidic, and then feeding the water to the reverse osmosis device; the reverse osmosis device is used for generating purified produced water and concentrated water; produced water of the nanofiltration device is fed to the electrodialysis device, and concentrated water of the nanofiltration device is fed to the crystallization device; supernate generated on the crystallization device is fed to the electrodialysis device. The high-salt hardly-degradable industrial wastewater system and method provided by the invention are low in operating cost, high in efficiency and the like.
Description
Technical field
The present invention relates to wastewater treatment, in particular to high salt indegradable industrial effluent treatment system and method.
Background technology
Along with the quickening of China's process of industrialization, come from the waste water (comprising reverse osmosis concentrated water) that the industries such as chemical industry, medicine, power plant produce in art production process and extensively exist and need process badly. This type of waste water is usually containing higher salinity and hardness, and organic components is complicated, and biochemical degradation performance is poor.
Owing to this kind of waste water often processes the water yield greatly, the difficulty of biochemical degradation and advanced oxidation degradation is big, and easily secondary pollution, and effluent index is difficult to reach country's emission request. Therefore, the reasonable effectively reuse that the treatment process seeking to be suitable under the prerequisite meeting national environmental protection policy realizes waste water becomes the key of this kind of wastewater treating technology, it is possible to produce good ecological environmental protection effect and considerable economic worth.
At present, existing technology mainly adopts the method for membrane sepn, processed by the combination process of nanofiltration, reverse osmosis, but the dense water of consequent greater concn does not provide rational solution, this dense water major part all belongs to industrial dangerous waste, greatly, costly, existing process technology does not help owner thoroughly to solve the treatment and disposal problem of high salinity waste water to process difficulty.
Summary of the invention
In order to the deficiency solved in above-mentioned prior art, the present invention provides a kind of efficient, high salt indegradable industrial effluent treatment system that running cost is low.
It is an object of the invention to be achieved through the following technical solutions:
A kind of high salt indegradable industrial effluent treatment system, described industrial wastewater treatment system comprises:
Ultra-filtration equipment, the product water out of described ultra-filtration equipment connects electrodialysis unit;
Electrodialysis unit, described electrodialysis unit, for realizing being separated of Organic substance in water and inorganic salt, produces water and send PH setting device, and dense water send nanofiltration device;
PH setting device, described PH setting device is used for the PH of the product water received is adjusted to acidity, and send reverse osmosis unit;
Reverse osmosis unit, described reverse osmosis unit produces the product water of purification and dense water;
Nanofiltration device, the product water of nanofiltration device send described electrodialysis unit, and dense water send crystallization apparatus;
Crystallization apparatus, the supernatant liquor that described crystallization apparatus produces send described electrodialysis unit.
According to above-mentioned industrial wastewater treatment system, it may be preferred that described nanofiltration device adopts two grades of nanofiltration membrane to concentrate.
According to above-mentioned industrial wastewater treatment system, it may be preferred that described two grades of nanofiltration membrane are respectively common nanofiltration membrane and ductwork type nanofiltration membrane.
According to above-mentioned industrial wastewater treatment system, it may be preferred that described crystallization apparatus adopts freezing and crystallizing device or evaporative crystallization device.
The present invention also aims to provide a kind of running cost high salt indegradable industrial effluent treatment process low, efficient, this goal of the invention is achieved by technical scheme:
A kind of high salt indegradable industrial effluent treatment process, described process for treating industrial waste water comprises the following steps:
(A1) high salt indegradable industrial effluent send ultra-filtration equipment, removes the colloid in waste water and particulate matter, produces water power transmission electrodialysis apparatus;
(A2) electrodialysis unit achieves the part salinity being stripped of in waste water, achieves being separated of useless Organic substance in water and inorganic salt simultaneously, produces water and send PH setting device, and dense water send nanofiltration device;
(A3) the PH value producing water is adjusted to acidity by PH setting device, and send reverse osmosis unit;
The product water that nanofiltration device produces is as the moisturizing of described electrodialysis unit, and the dense water of generation send crystallization apparatus;
(A4) reverse osmosis unit produces water and dense water;
Salting out in the dense water in crystallization apparatus, supernatant liquor is as the moisturizing of electrodialysis unit.
According to above-mentioned process for treating industrial waste water, it may be preferred that in step (A4), the product water of reverse osmosis unit is as process water, and dense water carries out receiving tube drainage.
According to above-mentioned process for treating industrial waste water, it may be preferred that in step (A4), the PH value after adjustment is 6.0 to 6.5.
According to above-mentioned process for treating industrial waste water, it may be preferred that described nanofiltration device adopts two grades of nanofiltration membrane to concentrate.
According to above-mentioned process for treating industrial waste water, it may be preferred that described two grades of nanofiltration membrane are respectively common nanofiltration membrane and ductwork type nanofiltration membrane.
According to above-mentioned process for treating industrial waste water, it may be preferred that described crystallization apparatus adopts freezing and crystallizing device or evaporative crystallization device.
Compared with prior art, the useful effect that the present invention has is:
Present method treatment scheme is simple, and system footprint area is little, and working cost is low, safety, efficiently. It is applicable to trade effluent bio-chemical effluent Treatment for Reuse, it is specially adapted to the trade effluent of high salinity, biochemical difference, the process of the high salinity waste water of such as pharmaceutical industries, reverse osmosis concentrated water, strong brine reuse, adopts the treatment scheme of high-efficient simple, it is achieved the target of waste water reclaiming Treatment for Reuse.
Accompanying drawing explanation
With reference to accompanying drawing, the disclosure of the present invention will become to be more readily understood. Those skilled in the art it is easily understood that: these accompanying drawings are only for illustrating the technical scheme of the present invention, and and are not intended to protection scope of the present invention be construed as limiting. In figure:
Fig. 1 is the structure diagram of the industrial wastewater treatment system of according to embodiments of the present invention 1.
Embodiment
Fig. 1 and following description describe the present invention optional enforcement mode to instruct how those skilled in the art implement and reproduce the present invention. In order to instruct technical solution of the present invention, simplify or eliminated some conventional aspects. Those skilled in the art should understand that the modification being derived from these enforcement modes or replace will within the scope of the invention. Those skilled in the art should understand that following characteristics can combine the multiple modification forming the present invention in various mode. Thus, the present invention is not limited to following optional enforcement mode, and only limits by claim and their jljl such as grade.
Embodiment 1:
Fig. 1 schematically illustrates the structure iron of the high salt indegradable industrial effluent treatment system of the embodiment of the present invention, and as shown in Figure 1, described industrial wastewater treatment system comprises:
Ultra-filtration equipment, the product water out of described ultra-filtration equipment connects electrodialysis unit;
Electrodialysis unit, described electrodialysis unit, for realizing being separated of Organic substance in water and inorganic salt, produces water and send PH setting device, and dense water send nanofiltration device;
PH setting device, described PH setting device is used for the PH of the product water received is adjusted to acidity, and PH value is 6.0 to 6.5, and send reverse osmosis unit;
Reverse osmosis unit, described reverse osmosis unit produces the product water of purification and dense water, and this product water is as process water, and this dense water carries out reaching tube drainage standard of receiving, and carries out receiving tube drainage;
Nanofiltration device, the product water of nanofiltration device send described electrodialysis unit so that as moisturizing, dense water send crystallization apparatus; Nanofiltration device adopts two grades of nanofiltration membrane to concentrate, and adopts common nanofiltration membrane and ductwork type nanofiltration membrane respectively;
Crystallization apparatus, the supernatant liquor that described crystallization apparatus produces send described electrodialysis unit so that as moisturizing, the salt of precipitation send salt manufacturing factory processes.
Namely the high salt indegradable industrial effluent treatment process of the embodiment of the present invention, also utilize the working process of above-mentioned industrial wastewater treatment system, and described process for treating industrial waste water comprises the following steps:
(A1) high salt indegradable industrial effluent send ultra-filtration equipment, removes the colloid in waste water and particulate matter, produces water power transmission electrodialysis apparatus;
(A2) electrodialysis unit achieves the part salinity being stripped of in waste water, achieves being separated of useless Organic substance in water and inorganic salt simultaneously, produces water and send PH setting device, and dense water send nanofiltration device;
(A3) the PH value producing water is adjusted to acidity by PH setting device, and PH value is 6.0 to 6.5, and send reverse osmosis unit;
The product water that nanofiltration device produces is as the moisturizing of described electrodialysis unit, and the dense water of generation send crystallization apparatus;
(A4) reverse osmosis unit produces water and dense water, and this product water is as process water, and this dense water carries out reaching tube drainage standard of receiving, and carries out receiving tube drainage;
Salting out in the dense water in crystallization apparatus, supernatant liquor send salt manufacturing factory processes as the moisturizing of electrodialysis unit, the salt of precipitation.
Embodiment 2:
According to embodiments of the present invention 1 industrial wastewater treatment system and method high salinity pharmaceutical wastewater process in application examples.
Waste water is biosystem draining, and the water yield is 5000m3/d. In water, TDS is 5000mg/L, reaches as high as 8000mg/L, based on divalence vitriol; COD is��200mg/L, B/C be low to moderate 0.1; Ca2+Content is 100mg/L, Mg2+Content is 30mg/L, SO4 2-Content is 3000mg/L; Belonging to typical high rigidity height salinity used water difficult to degradate, if being directly disposed to garden sewage work, discharge fee is huge, and lacks production and blowdown initiative.
This waste water adopts the process of the system in embodiment 1, through the pilot scale of a year, after system stable operation, reverse osmosis produced water TDS is about 250��350mg/L, COD < 20mg/L, produce water water quality to be obviously better than " recirculated cooling water Standard of reclaimed water " (HG-T3923-2007), and as recirculated cooling water moisturizing reuse. Meanwhile, in the concentrated solution after reverse osmosis membrane processing TDS content be��6000mg/L, COD content is��1000mg/L, reach garden Sewage Plant and receive pipe standards. Total product Water Sproading rate of system reaches 80%. The dense water of electrodialysis concentration after membrane concentration liquid improves greatly, and by freezing and crystallizing system crystallize out, crystal is apparent pale, can directly use as industrial chemicals through content detection.
Claims (10)
1. one kind high salt indegradable industrial effluent treatment system, it is characterised in that: described industrial wastewater treatment system comprises:
Ultra-filtration equipment, the product water out of described ultra-filtration equipment connects electrodialysis unit;
Electrodialysis unit, described electrodialysis unit, for realizing being separated of Organic substance in water and inorganic salt, produces water and send PH setting device, and dense water send nanofiltration device;
PH setting device, described PH setting device is used for the PH of the product water received is adjusted to acidity, and send reverse osmosis unit;
Reverse osmosis unit, described reverse osmosis unit produces the product water of purification and dense water;
Nanofiltration device, the product water of nanofiltration device send described electrodialysis unit, and dense water send crystallization apparatus;
Crystallization apparatus, the supernatant liquor that described crystallization apparatus produces send described electrodialysis unit.
2. industrial wastewater treatment system according to claim 1, it is characterised in that: described nanofiltration device adopts two grades of nanofiltration membrane to concentrate.
3. industrial wastewater treatment system according to claim 2, it is characterised in that: described two grades of nanofiltration membrane are respectively common nanofiltration membrane and ductwork type nanofiltration membrane.
4. industrial wastewater treatment system according to claim 1, it is characterised in that: described crystallization apparatus adopts freezing and crystallizing device or evaporative crystallization device.
5. a high salt indegradable industrial effluent treatment process, described process for treating industrial waste water comprises the following steps:
(A1) high salt indegradable industrial effluent send ultra-filtration equipment, removes the colloid in waste water and particulate matter, produces water power transmission electrodialysis apparatus;
(A2) electrodialysis unit achieves the part salinity being stripped of in waste water, achieves being separated of useless Organic substance in water and inorganic salt simultaneously, produces water and send PH setting device, and dense water send nanofiltration device;
(A3) the PH value producing water is adjusted to acidity by PH setting device, and send reverse osmosis unit;
The product water that nanofiltration device produces is as the moisturizing of described electrodialysis unit, and the dense water of generation send crystallization apparatus;
(A4) reverse osmosis unit produces water and dense water;
Salting out in the dense water in crystallization apparatus, supernatant liquor is as the moisturizing of electrodialysis unit.
6. process for treating industrial waste water according to claim 5, it is characterised in that: in step (A4), the product water of reverse osmosis unit is as process water, and dense water carries out receiving tube drainage.
7. process for treating industrial waste water according to claim 5, it is characterised in that: in step (A4), the PH value after adjustment is 6.0 to 6.5.
8. process for treating industrial waste water according to claim 5, it is characterised in that: described nanofiltration device adopts two grades of nanofiltration membrane to concentrate.
9. process for treating industrial waste water according to claim 8, it is characterised in that: described two grades of nanofiltration membrane are respectively common nanofiltration membrane and ductwork type nanofiltration membrane.
10. process for treating industrial waste water according to claim 5, it is characterised in that: described crystallization apparatus adopts freezing and crystallizing device or evaporative crystallization device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511023132.7A CN105621757A (en) | 2015-12-30 | 2015-12-30 | High-salt hardly-degradable industrial wastewater system and method |
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| CN201511023132.7A CN105621757A (en) | 2015-12-30 | 2015-12-30 | High-salt hardly-degradable industrial wastewater system and method |
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| CN105621757A true CN105621757A (en) | 2016-06-01 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109160663A (en) * | 2018-10-16 | 2019-01-08 | 江苏环保产业技术研究院股份公司 | A kind of dye industry waste water from dyestuff sub-prime with high salt recycles technique and device |
| CN110143705A (en) * | 2019-06-17 | 2019-08-20 | 杭州水处理技术研究开发中心有限公司 | A kind of processing method of the high-salt wastewater of type organic containing chloromethanes |
| CN114716083A (en) * | 2022-02-14 | 2022-07-08 | 唐山钢铁集团有限责任公司 | Industrial strong brine zero-discharge treatment system and method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103739132A (en) * | 2014-01-02 | 2014-04-23 | 杭州深瑞水务有限公司 | High-salinity industrial wastewater reusing treatment process |
| CN103896437A (en) * | 2014-01-02 | 2014-07-02 | 杭州深瑞水务有限公司 | Zero emission treatment process of high-salinity wastewater |
-
2015
- 2015-12-30 CN CN201511023132.7A patent/CN105621757A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103739132A (en) * | 2014-01-02 | 2014-04-23 | 杭州深瑞水务有限公司 | High-salinity industrial wastewater reusing treatment process |
| CN103896437A (en) * | 2014-01-02 | 2014-07-02 | 杭州深瑞水务有限公司 | Zero emission treatment process of high-salinity wastewater |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109160663A (en) * | 2018-10-16 | 2019-01-08 | 江苏环保产业技术研究院股份公司 | A kind of dye industry waste water from dyestuff sub-prime with high salt recycles technique and device |
| CN110143705A (en) * | 2019-06-17 | 2019-08-20 | 杭州水处理技术研究开发中心有限公司 | A kind of processing method of the high-salt wastewater of type organic containing chloromethanes |
| CN114716083A (en) * | 2022-02-14 | 2022-07-08 | 唐山钢铁集团有限责任公司 | Industrial strong brine zero-discharge treatment system and method |
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Application publication date: 20160601 |