CN115403207B - Method and system for treating high-salinity high-organic-matter wastewater - Google Patents
Method and system for treating high-salinity high-organic-matter wastewater Download PDFInfo
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- CN115403207B CN115403207B CN202211361136.6A CN202211361136A CN115403207B CN 115403207 B CN115403207 B CN 115403207B CN 202211361136 A CN202211361136 A CN 202211361136A CN 115403207 B CN115403207 B CN 115403207B
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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
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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
- C02F1/048—Purification of waste water by evaporation
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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
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
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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
- C02F1/441—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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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- 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
Abstract
The invention discloses a method and a system for treating high-salinity high-organic wastewater, which comprises the following steps: carrying out single-effect evaporation on the high-salinity high-organic-matter wastewater to obtain a concentrated solution, condensed water and non-condensed steam; carrying out centrifugal desalination on the concentrated solution obtained by single-effect evaporation to obtain product salt and mother liquor; caching the mother liquor obtained by centrifugal desalination, and then drying the mother liquor to obtain miscellaneous salt, condensed water and non-condensed steam; carrying out reverse osmosis on condensed water obtained by single-effect evaporation and condensed water obtained by drying mother liquor, wherein the reverse osmosis produced water is discharged after reaching the standard; and deodorizing the non-condensed steam obtained by single-effect evaporation and the non-condensed steam obtained by mother liquor drying, and discharging the deodorized product after reaching the standard. The treatment method of the invention separates the organic matters and the salt in the high-salinity high-organic-matter wastewater (the salinity is higher than 250000mg/L and the organic matter content is higher than 50000 mg/L) in a solid form, and has lower yield of the miscellaneous salt, thereby greatly reducing the treatment cost of the solid waste.
Description
Technical Field
The invention relates to the technical field of wastewater treatment, in particular to a method and a system for treating high-salinity high-organic wastewater.
Background
The requirement of China on zero discharge of wastewater in the chemical industry is higher and higher, but the wastewater discharge capacity of most chemical industries is large, organic matters and salt in the wastewater are lower, the organic matters are lower than 500mg/L, and the salt is lower than 10000mg/L, but after the wastewater is treated by a membrane system and an evaporation system, a large amount of organic matters and salt are finally enriched in the wastewater, the organic matter content is higher than 50000mg/L, and the salt content is higher than 250000mg/L; the organic matter can not be removed through biochemical or oxidation process due to too high salinity, and condensed water and non-condensed steam can not reach the standard and can not be directly discharged out due to too high organic matter in the treatment process of a simple evaporation process.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a method and a system for treating high-salinity high-organic wastewater.
The invention discloses a method for treating high-salinity high-organic wastewater, which comprises the following steps:
performing single-effect evaporation on the high-salinity high-organic-matter wastewater to obtain a concentrated solution, condensed water and non-condensed steam;
carrying out centrifugal desalination on the concentrated solution obtained by single-effect evaporation to obtain product salt and mother liquor;
after buffering the mother liquor obtained by centrifugal desalination, drying the mother liquor to obtain miscellaneous salt, condensed water and non-condensed steam;
carrying out reverse osmosis on condensed water obtained by single-effect evaporation and condensed water obtained by drying mother liquor, wherein the reverse osmosis produced water is discharged after reaching the standard;
and deodorizing the non-condensed steam obtained by single-effect evaporation and the non-condensed steam obtained by mother liquor drying, and discharging the deodorized product after reaching the standard.
As a further improvement of the invention, the method also comprises the following steps:
and in the mother liquor caching process, measuring the content of the organic matters in the mother liquor, and drying the mother liquor when the content of the organic matters in the mother liquor is more than 20000 mg/L.
As a further improvement of the invention, when the content of organic matters in the mother liquor is less than or equal to 20000mg/L, the mother liquor is returned to carry out single-effect evaporation.
As a further improvement of the invention, the method also comprises the following steps:
and returning the reverse osmosis concentrated water to perform single-effect evaporation.
The invention also discloses a system for treating the high-salinity high-organic wastewater, which comprises the following steps: the single-effect evaporation unit, the desalination unit, the mother liquor buffer unit and the mother liquor drying unit are sequentially arranged along the treatment flow direction of the high-salinity high-organic-matter wastewater;
condensed water of the single-effect evaporation unit and the mother liquor drying unit is sent to a reverse osmosis unit, concentrated water of the reverse osmosis unit is sent to the single-effect evaporation unit, and produced water of the reverse osmosis unit is sent to a condensed water tank;
the single-effect evaporation unit and the mother liquor drying unit are sent to the deodorization unit without being condensed with steam, and are discharged after reaching the standard after being treated by the deodorization unit; and packaging the product salt generated by the desalting unit and the miscellaneous salt generated by the mother liquor drying unit for outputting.
As a further improvement of the invention, an organic matter content measuring unit is arranged in the mother liquor cache unit, and the mother liquor cache unit is also connected with the single-effect evaporation unit; when the content of organic matters in the mother liquor is more than 20000mg/L, sending the mother liquor to the mother liquor drying unit for mother liquor drying; and when the content of the organic matters in the mother liquor is less than or equal to 20000mg/L, returning the mother liquor to the single-effect evaporation unit for single-effect evaporation.
As a further improvement of the invention, the desalination unit employs a centrifuge device.
As a further improvement of the invention, the mother liquor drying unit adopts a drum dryer and utilizes high-temperature steam to heat the mother liquor.
As a further improvement of the invention, the reverse osmosis unit adopts a reverse osmosis membrane.
As a further improvement of the invention, the deodorization unit is used for further absorbing organic matters and dust contained in the non-condensed steam of the single-effect evaporation unit and the mother liquor drying unit by adopting chemical washing.
Compared with the prior art, the invention has the beneficial effects that:
aiming at high-salinity high-organic-matter wastewater with salinity higher than 250000mg/L and organic matter content higher than 50000mg/L, the treatment method disclosed by the invention separates the organic matters and the salinity in a solid form, and has lower yield of miscellaneous salt, so that the treatment cost of solid waste is greatly reduced; meanwhile, the condensed water reaches the emission standard through reverse osmosis treatment, and the non-condensed water can reach the national emission standard through deodorization treatment.
Drawings
FIG. 1 is a flow chart illustrating a method for treating high salinity high organic wastewater according to one embodiment of the present invention;
FIG. 2 is a schematic view of a system for treating high salinity and high organic wastewater according to an embodiment of the present invention.
In the figure:
1. a single effect evaporation unit; 2. a desalination unit; 3. a mother liquor buffer unit; 4. a mother liquor drying unit; 5. a reverse osmosis unit; 6. a deodorization unit.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The invention is described in further detail below with reference to the following drawings:
as shown in fig. 1, the present invention provides a method for treating high-salinity high-organic wastewater, comprising:
step 1, performing single-effect evaporation on the high-salinity high-organic-matter wastewater to obtain a concentrated solution, condensed water and non-condensed steam; wherein the content of the first and second substances,
the single-effect evaporation mainly adopts steam to heat the high-salinity high-organic-matter wastewater, so that the high-salinity high-organic-matter wastewater is concentrated and crystallized, the contents of salinity and organic matters in the wastewater are further improved, and product salt and condensed water in the wastewater are recovered.
Step 2, carrying out centrifugal desalination on the concentrated solution obtained by single-effect evaporation to obtain product salt and mother liquor; wherein the content of the first and second substances,
and separating the product salt from the mother liquor in the concentrated solution by a centrifugal machine device, and packaging the product salt in a packaging unit for output.
And 3, caching the mother liquor obtained by centrifugal desalination, and measuring the content of organic matters in the mother liquor.
Step 4, when the content of organic matters in the mother liquor is more than 20000mg/L, drying the mother liquor to obtain miscellaneous salt, condensed water and non-condensed steam; when the content of organic matters in the mother liquor is less than or equal to 20000mg/L, returning the mother liquor to the step 1 for single-effect evaporation; wherein, the first and the second end of the pipe are connected with each other,
the mother liquor is dried by a drum dryer, the mother liquor is heated by high-temperature steam, the heat transfer mechanism of the mother liquor is heat conduction, the heat transfer direction is kept consistent in the whole operation period, the rest heat is used for evaporation of the moisture of the cylindrical material film except for heat dissipation and heat radiation loss, and the heat efficiency can reach 80-90%; mother liquor can be thoroughly dried into miscellaneous salt by mother liquor drying, and then is packaged and transported, and the water content is recycled.
Step 5, carrying out reverse osmosis on the condensate water obtained by single-effect evaporation and the condensate water obtained by drying the mother liquor, discharging the reverse osmosis produced water after reaching the standard, and returning the reverse osmosis concentrated water to the step 1 for single-effect evaporation; wherein the content of the first and second substances,
most organic matters and ions are intercepted by reverse osmosis, water molecules pass through the reverse osmosis membrane, and the produced water can reach the national discharge standard; the reverse osmosis membrane has low energy consumption and simple operation, and can further purify the produced water of single-effect evaporation and mother liquor drying by reverse osmosis so as to reach the national discharge standard.
Step 6, deodorizing the non-condensed steam obtained by single-effect evaporation and the non-condensed steam obtained by mother liquor drying, and discharging the deodorized liquid after reaching the standard; wherein, the first and the second end of the pipe are connected with each other,
the deodorization is to adopt chemical washing to further absorb organic matters and dust contained in the non-condensed steam of the single-effect evaporation unit and the mother liquor drying unit.
As shown in fig. 2, the present invention provides a system for treating high-salinity high-organic wastewater, comprising: the system comprises a single-effect evaporation unit 1, a desalination unit 2, a mother liquor buffer unit 3 and a mother liquor drying unit 4 which are sequentially arranged along the treatment flow direction of the high-salinity high-organic-matter wastewater; wherein, the condensed water of the single-effect evaporation unit 1 and the mother liquor drying unit 4 is sent to the reverse osmosis unit 5, the concentrated water of the reverse osmosis unit 5 is sent to the single-effect evaporation unit 1, and the produced water of the reverse osmosis unit 5 is sent to a condensed water tank for recycling; the non-condensed steam of the single-effect evaporation unit 1 and the mother liquor drying unit 4 is sent to the deodorization unit 6, and is discharged after reaching the standard after being treated by the deodorization unit 6; and packaging the product salt produced by the desalting unit 2 and the miscellaneous salt produced by the mother liquor drying unit 4 for export.
Specifically, the method comprises the following steps:
the single-effect evaporation unit 1 of the invention heats the high-salinity high-organic-matter wastewater by adopting steam, so that the high-salinity high-organic-matter wastewater is concentrated and crystallized, the contents of salinity and organic matters in the wastewater are further improved, and product salt and condensate water in the wastewater are recovered.
The desalting unit 2 of the invention adopts a centrifuge device to separate the product salt in the concentrated solution from the mother solution, and the product salt enters a packaging unit for packaging and outputting.
The mother liquor caching unit 3 has the function of maintaining the stability of the single-effect evaporation system and the mother liquor drying system, an organic matter content measuring unit is arranged in the mother liquor caching unit 3, and the mother liquor caching unit 3 is also connected with the single-effect evaporation unit 1; when the content of organic matters in the mother liquor is more than 20000mg/L, the mother liquor is sent to a mother liquor drying unit 4 for mother liquor drying; and when the content of the organic matters in the mother liquor is less than or equal to 20000mg/L, returning the mother liquor to the single-effect evaporation unit 1 for single-effect evaporation.
The mother liquor drying unit 4 adopts a drum dryer, and high-temperature steam is used for heating the mother liquor; and (3) exchanging heat between the salt and the organic matters in the mother liquor and low-pressure steam (0.6 Mpa), forming solid miscellaneous salt by the salt and the organic matters, and collecting and transporting the miscellaneous salt.
The reverse osmosis unit 5 adopts a reverse osmosis membrane to intercept most organic matters and ions, water molecules pass through the reverse osmosis membrane, and the produced water can reach the national discharge standard; the reverse osmosis membrane has low energy consumption and simple operation, and the produced water of the single-effect evaporation unit 1 and the mother liquor drying unit 4 can be further purified by the reverse osmosis unit 5 to reach the national discharge standard.
The deodorization unit 6 of the invention adopts chemical washing to further absorb organic matters and dust contained in the non-condensed steam of the single-effect evaporation unit and the mother liquor drying unit.
The invention has the advantages that:
aiming at high-salinity high-organic-matter wastewater with salinity higher than 250000mg/L and organic matter content higher than 50000mg/L, the treatment method disclosed by the invention separates the organic matters and the salinity in a solid form, and has lower yield of miscellaneous salt, so that the treatment cost of solid waste is greatly reduced; meanwhile, the condensed water reaches the emission standard through reverse osmosis treatment, and the non-condensed water can reach the national emission standard through deodorization treatment.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. 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 (7)
1. A method for treating high-salinity high-organic wastewater is characterized by comprising the following steps:
carrying out single-effect evaporation on the high-salinity high-organic-matter wastewater to obtain a concentrated solution, condensed water and non-condensed steam; wherein the salinity of the high-salinity high-organic-matter wastewater is higher than 250000mg/L, and the organic matter content is higher than 50000mg/L;
carrying out centrifugal desalination on the concentrated solution obtained by single-effect evaporation to obtain product salt and mother liquor;
caching the mother liquor obtained by centrifugal desalination, and then drying the mother liquor to obtain miscellaneous salt, condensed water and non-condensed steam; measuring the content of organic matters in the mother liquor caching process, and drying the mother liquor when the content of the organic matters in the mother liquor is more than 20000 mg/L; when the content of organic matters in the mother liquor is less than or equal to 20000mg/L, returning the mother liquor to carry out single-effect evaporation;
carrying out reverse osmosis on condensed water obtained by single-effect evaporation and condensed water obtained by drying mother liquor, discharging the reverse osmosis produced water after reaching the standard, and returning reverse osmosis concentrated water to carry out single-effect evaporation;
and deodorizing the non-condensed steam obtained by single-effect evaporation and the non-condensed steam obtained by mother liquor drying, and discharging the deodorized product after reaching the standard.
2. A high-salinity high-organic wastewater treatment system for implementing the method for treating high-salinity high-organic wastewater according to claim 1, comprising: the single-effect evaporation unit, the desalination unit, the mother liquor buffer unit and the mother liquor drying unit are sequentially arranged along the treatment flow direction of the high-salinity high-organic-matter wastewater;
condensed water of the single-effect evaporation unit and the mother liquor drying unit is sent to a reverse osmosis unit, concentrated water of the reverse osmosis unit is sent to the single-effect evaporation unit, and produced water of the reverse osmosis unit is sent to a condensed water tank;
the non-condensed steam of the single-effect evaporation unit and the mother liquor drying unit is sent to a deodorization unit, and is discharged after reaching the standard after being treated by the deodorization unit; and packaging the product salt generated by the desalting unit and the miscellaneous salt generated by the mother liquor drying unit for output.
3. The system for treating high-salinity high-organic-matter wastewater according to claim 2, wherein an organic matter content measuring unit is arranged in the mother liquor buffer unit, and the mother liquor buffer unit is further connected with the single-effect evaporation unit; when the content of organic matters in the mother liquor is more than 20000mg/L, sending the mother liquor to the mother liquor drying unit for mother liquor drying; and when the content of the organic matters in the mother liquor is less than or equal to 20000mg/L, returning the mother liquor to the single-effect evaporation unit for single-effect evaporation.
4. The system of claim 2, wherein the desalination unit is a centrifuge device.
5. The system for treating high-salinity high-organic wastewater according to claim 2, wherein the mother liquor drying unit adopts a drum dryer, and the mother liquor is heated by high-temperature steam.
6. The system for treating high-salinity high-organic wastewater according to claim 2, wherein the reverse osmosis unit is a reverse osmosis membrane.
7. The system for treating high-salinity high-organic wastewater according to claim 2, wherein the deodorization unit is used for further absorbing organic matters and dust contained in the non-condensed steam of the single-effect evaporation unit and the mother liquor drying unit by adopting chemical washing.
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| CN115403207B true CN115403207B (en) | 2023-02-07 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005334736A (en) * | 2004-05-25 | 2005-12-08 | Sumitomo Heavy Ind Ltd | Desalting method for salts-containing treated water and apparatus therefor |
| CN105060650A (en) * | 2015-08-25 | 2015-11-18 | 格蓝特环保工程(北京)有限公司 | Sewage resourcesization treatment method |
| CN205241428U (en) * | 2015-11-11 | 2016-05-18 | 江苏云水谣环境科技有限公司 | Evaporating treatment system of waste water |
| RU2686074C1 (en) * | 2018-08-15 | 2019-04-24 | Федеральное государственное унитарное предприятие "Производственное объединение "Маяк" | Method of processing liquid radioactive wastes |
| CN110526500A (en) * | 2019-08-27 | 2019-12-03 | 合肥天汇孵化科技有限公司 | A kind of reutilization system and method for high COD soybean waste liquid with high salt |
| CN114684884A (en) * | 2020-12-28 | 2022-07-01 | 江苏嘉泰蒸发设备股份有限公司 | Concentration and decrement process for evaporating and crystallizing high-content organic matters in salt-containing wastewater |
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- 2022-11-02 CN CN202211361136.6A patent/CN115403207B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005334736A (en) * | 2004-05-25 | 2005-12-08 | Sumitomo Heavy Ind Ltd | Desalting method for salts-containing treated water and apparatus therefor |
| CN105060650A (en) * | 2015-08-25 | 2015-11-18 | 格蓝特环保工程(北京)有限公司 | Sewage resourcesization treatment method |
| CN205241428U (en) * | 2015-11-11 | 2016-05-18 | 江苏云水谣环境科技有限公司 | Evaporating treatment system of waste water |
| RU2686074C1 (en) * | 2018-08-15 | 2019-04-24 | Федеральное государственное унитарное предприятие "Производственное объединение "Маяк" | Method of processing liquid radioactive wastes |
| CN110526500A (en) * | 2019-08-27 | 2019-12-03 | 合肥天汇孵化科技有限公司 | A kind of reutilization system and method for high COD soybean waste liquid with high salt |
| CN114684884A (en) * | 2020-12-28 | 2022-07-01 | 江苏嘉泰蒸发设备股份有限公司 | Concentration and decrement process for evaporating and crystallizing high-content organic matters in salt-containing wastewater |
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