CN112279450A - Zero-emission treatment process for high-salinity high-organic-matter wastewater - Google Patents
Zero-emission treatment process for high-salinity high-organic-matter wastewater Download PDFInfo
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- CN112279450A CN112279450A CN201910669153.8A CN201910669153A CN112279450A CN 112279450 A CN112279450 A CN 112279450A CN 201910669153 A CN201910669153 A CN 201910669153A CN 112279450 A CN112279450 A CN 112279450A
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- 239000002351 wastewater Substances 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000005416 organic matter Substances 0.000 title claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 150000003839 salts Chemical class 0.000 claims abstract description 20
- 238000001704 evaporation Methods 0.000 claims abstract description 13
- 238000010992 reflux Methods 0.000 claims abstract description 13
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 13
- 230000001105 regulatory effect Effects 0.000 claims abstract description 12
- 238000010612 desalination reaction Methods 0.000 claims abstract description 11
- 230000008020 evaporation Effects 0.000 claims abstract description 10
- 230000001112 coagulating effect Effects 0.000 claims abstract description 8
- 238000010790 dilution Methods 0.000 claims abstract description 6
- 239000012895 dilution Substances 0.000 claims abstract description 6
- 238000005188 flotation Methods 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 238000004062 sedimentation Methods 0.000 claims abstract description 4
- 238000000926 separation method Methods 0.000 claims abstract description 4
- 239000010865 sewage Substances 0.000 claims abstract description 4
- 239000008399 tap water Substances 0.000 claims abstract description 4
- 235000020679 tap water Nutrition 0.000 claims abstract description 4
- 238000004064 recycling Methods 0.000 claims description 9
- 239000000243 solution Substances 0.000 claims description 8
- 239000012153 distilled water Substances 0.000 claims description 4
- 239000012267 brine Substances 0.000 claims description 3
- 239000013078 crystal Substances 0.000 claims description 3
- 238000011033 desalting Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 239000012452 mother liquor Substances 0.000 claims description 3
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims description 3
- 238000007865 diluting Methods 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 208000028659 discharge Diseases 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002071 nanotube Substances 0.000 description 1
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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
-
- 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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- 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
- 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
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
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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 zero discharge treatment process of high-salinity high-organic wastewater, which comprises the following steps: s1, conveying the waste water and/or non-waste water generated after municipal water supply to the water plants of the processing units to corresponding collecting ponds of the plants; s2, performing corresponding solid-liquid separation, coagulating sedimentation and/or coagulating air flotation and other pretreatment on the wastewater in each water collecting tank, and then feeding the effluent into a biochemical regulating tank; s3, making the wastewater discharged by the living facilities enter a biochemical regulating tank after passing through a grid water collecting tank; s4, adding tap water into the sewage in the biochemical regulating tank for the first time for dilution and starting, and then refluxing the desalted water after the reflux treatment to maintain the low salt concentration operation of the system; s5, the wastewater enters a reverse osmosis treatment system for desalination treatment after biochemical treatment. The invention effectively realizes the biochemical treatment and the salt recovery of the high-salt high-organic matter, reduces the evaporation treatment capacity, saves the treatment energy consumption and is beneficial to the resource utilization of the high-salt high-organic matter wastewater.
Description
Technical Field
The invention relates to a wastewater discharge process, in particular to a zero discharge treatment process of high-salinity high-organic wastewater.
Background
With the rapid development of social economy, the requirements and standards for environment-friendly treatment are higher and higher, the salt content in the wastewater discharged by the nano-tube is not required in the past, the salt content is limited at present, many wastewater discharged after reaching the standard is changed into overproof wastewater due to overhigh salt content, the desalination treatment is required, and the application of desalination processes and technologies is more and more. In the salt-containing wastewater, the high-salt high-organic matter wastewater is wastewater which is difficult to treat, the biochemical treatment is difficult to remove the organic matters due to the high salt content, and the direct desalination by the common desalination process is difficult to carry out due to the high organic matter content. The existing treatment process mainly adopts evaporation equipment to treat high-salinity high-organic-matter wastewater, and distilled water reaches the standard or reaches the standard after biochemical treatment. The method adopting evaporation has certain limitations, higher energy consumption, more separated concentrated solution and high equipment investment cost. The method is designed to reduce the evaporation scale, reduce the energy consumption and the yield of concentrated solution and realize the zero discharge of wastewater.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a zero-emission treatment process for high-salinity high-organic-matter wastewater.
In order to solve the technical problems, the invention provides the following technical scheme:
the invention relates to a zero-emission treatment process of high-salinity high-organic-matter wastewater, which comprises the following steps of:
s1, conveying the waste water and/or non-waste water generated after municipal water supply to the water plants of the processing units to corresponding collecting ponds of the plants; s2, performing corresponding solid-liquid separation, coagulating sedimentation and/or coagulating air flotation and other pretreatment on the wastewater in each water collecting tank, and then feeding the effluent into a biochemical regulating tank; s3, making the wastewater discharged by the living facilities enter a biochemical regulating tank after passing through a grid water collecting tank; s4, adding tap water into the sewage in the biochemical regulating tank for the first time for dilution and starting, and then refluxing the desalted water after the reflux treatment to maintain the low salt concentration operation of the system; s5, performing biochemical treatment on the wastewater, then desalting the wastewater in a reverse osmosis treatment system, recycling a part of concentrated solution in a workshop, evaporating and concentrating a part of concentrated solution through an evaporator system, and refluxing desalted water in the biochemical system; s6, recycling or discharging the distilled water of the evaporator, and recycling or externally transporting the evaporation mother liquor for disposal.
As a preferred technical scheme of the invention, low salt water is added for dilution and started at the first time in the biochemical treatment stage, and the reverse osmosis desalted water of the subsequent backflow system is diluted to maintain the salt concentration content of the biochemical system to meet the biochemical treatment condition.
As a preferred technical scheme of the invention, organic matters in the high-salt high-organic-matter wastewater are removed by adopting a biochemical treatment process, and then desalination treatment is carried out to recycle strong brine or obtain salt crystals.
The invention has the following beneficial effects: according to the invention, the raw water is diluted by utilizing the produced water of the system, the salt content condition of biochemical treatment is met, organic matters are removed by biochemical treatment, reverse osmosis desalination and reverse osmosis concentrated water are used, the concentrated water which cannot be reused is evaporated finally, resources are fully recovered, the evaporation treatment capacity is greatly reduced, and the energy consumption is reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is one of the schematic diagrams of the present invention;
FIG. 2 is a second schematic diagram of the present invention; .
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Examples
As shown in fig. 1-2, the invention provides a zero-emission treatment process for high-salinity high-organic wastewater, which comprises the following steps:
s1, conveying the waste water and/or non-waste water generated after municipal water supply to the water plants of the processing units to corresponding collecting ponds of the plants;
s2, performing corresponding solid-liquid separation, coagulating sedimentation and/or coagulating air flotation and other pretreatment on the wastewater in each water collecting tank, and then feeding the effluent into a biochemical regulating tank;
s3, making the wastewater discharged by the living facilities enter a biochemical regulating tank after passing through a grid water collecting tank;
s4, adding tap water into the sewage in the biochemical regulating tank for the first time for dilution and starting, and then refluxing the desalted water after the reflux treatment to maintain the low salt concentration operation of the system;
s5, performing biochemical treatment on the wastewater, then desalting the wastewater in a reverse osmosis treatment system, recycling a part of concentrated solution in a workshop, evaporating and concentrating a part of concentrated solution through an evaporator system, and refluxing desalted water in the biochemical system; the reverse osmosis concentrated water can be further concentrated by adopting disc tube type reverse osmosis (DTRO) and then is subjected to evaporation treatment.
S6, recycling or discharging the distilled water of the evaporator, and recycling or externally transporting the evaporation mother liquor for disposal.
And low salt water is added for dilution and started at the first time in the biochemical treatment stage, and the subsequent reverse osmosis desalted water of the reflux system is diluted to maintain the salt concentration content of the biochemical system to meet the biochemical treatment condition.
Organic matters in the high-salt high-organic-matter wastewater are removed by adopting a biochemical treatment process, and then desalination treatment is carried out, and strong brine is recycled or salt crystals are obtained.
According to the invention, the raw water is diluted by utilizing the produced water of the system, the salt content condition of biochemical treatment is met, organic matters are removed by biochemical treatment, reverse osmosis desalination and reverse osmosis concentrated water are used, the concentrated water which cannot be reused is evaporated finally, resources are fully recovered, the evaporation treatment capacity is greatly reduced, and the energy consumption is reduced.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. A zero-emission treatment process for high-salinity high-organic-matter wastewater is characterized by comprising the following steps:
s1, conveying the waste water and/or non-waste water generated after municipal water supply to the water plants of the processing units to corresponding collecting ponds of the plants;
s2, performing corresponding solid-liquid separation, coagulating sedimentation and/or coagulating air flotation and other pretreatment on the wastewater in each water collecting tank, and then feeding the effluent into a biochemical regulating tank;
s3, making the wastewater discharged by the living facilities enter a biochemical regulating tank after passing through a grid water collecting tank;
s4, adding tap water into the sewage in the biochemical regulating tank for the first time for dilution and starting, and then refluxing the desalted water after the reflux treatment to maintain the low salt concentration operation of the system;
s5, performing biochemical treatment on the wastewater, then desalting the wastewater in a reverse osmosis treatment system, recycling a part of concentrated solution in a workshop, evaporating and concentrating a part of concentrated solution through an evaporator system, and refluxing desalted water in the biochemical system;
s6, recycling or discharging the distilled water of the evaporator, and recycling or externally transporting the evaporation mother liquor for disposal.
2. The process of claim 1, wherein the biochemical treatment stage is started by diluting with low-salt water for the first time, and the subsequent reverse osmosis desalination water of the reflux system is diluted to maintain the salt concentration content of the biochemical system to meet the biochemical treatment conditions.
3. The zero emission treatment process of high-salt high-organic wastewater according to claim 1 or 2, characterized in that organic matters in the high-salt high-organic wastewater are removed by a biochemical treatment process, and then desalination treatment is performed to recycle concentrated brine or obtain salt crystals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910669153.8A CN112279450A (en) | 2019-07-24 | 2019-07-24 | Zero-emission treatment process for high-salinity high-organic-matter wastewater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910669153.8A CN112279450A (en) | 2019-07-24 | 2019-07-24 | Zero-emission treatment process for high-salinity high-organic-matter wastewater |
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| CN112279450A true CN112279450A (en) | 2021-01-29 |
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| CN201910669153.8A Pending CN112279450A (en) | 2019-07-24 | 2019-07-24 | Zero-emission treatment process for high-salinity high-organic-matter wastewater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113480107A (en) * | 2021-08-03 | 2021-10-08 | 苏州青和环境科技有限公司 | Zero-emission process for treating high-salinity high-organic wastewater based on wet catalytic oxidation technology |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104150721A (en) * | 2014-08-29 | 2014-11-19 | 北京赛科康仑环保科技有限公司 | Resourceful treatment method for food processing wastewater |
| CN205953772U (en) * | 2016-08-08 | 2017-02-15 | 广东环院环境工程有限公司 | Waste water recycling processing system of high -efficient desalination |
| CN107200435A (en) * | 2017-06-14 | 2017-09-26 | 广东益诺欧环保股份有限公司 | A kind of nickel-containing waste water processing method, processing system and application |
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2019
- 2019-07-24 CN CN201910669153.8A patent/CN112279450A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104150721A (en) * | 2014-08-29 | 2014-11-19 | 北京赛科康仑环保科技有限公司 | Resourceful treatment method for food processing wastewater |
| CN205953772U (en) * | 2016-08-08 | 2017-02-15 | 广东环院环境工程有限公司 | Waste water recycling processing system of high -efficient desalination |
| CN107200435A (en) * | 2017-06-14 | 2017-09-26 | 广东益诺欧环保股份有限公司 | A kind of nickel-containing waste water processing method, processing system and application |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113480107A (en) * | 2021-08-03 | 2021-10-08 | 苏州青和环境科技有限公司 | Zero-emission process for treating high-salinity high-organic wastewater based on wet catalytic oxidation technology |
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Application publication date: 20210129 |