CN111847750A - High-low salt wastewater separation system and method - Google Patents
High-low salt wastewater separation system and method Download PDFInfo
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- CN111847750A CN111847750A CN202010847094.1A CN202010847094A CN111847750A CN 111847750 A CN111847750 A CN 111847750A CN 202010847094 A CN202010847094 A CN 202010847094A CN 111847750 A CN111847750 A CN 111847750A
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- wastewater
- low
- waste water
- salt
- water
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- 239000002351 wastewater Substances 0.000 title claims abstract description 140
- 150000003839 salts Chemical class 0.000 title claims abstract description 23
- 238000000926 separation method Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000011084 recovery Methods 0.000 claims abstract description 17
- 238000001704 evaporation Methods 0.000 claims abstract description 11
- 230000008020 evaporation Effects 0.000 claims abstract description 11
- 230000008929 regeneration Effects 0.000 claims description 12
- 238000011069 regeneration method Methods 0.000 claims description 12
- 238000010612 desalination reaction Methods 0.000 claims description 8
- 238000006477 desulfuration reaction Methods 0.000 claims description 8
- 230000023556 desulfurization Effects 0.000 claims description 8
- 239000008235 industrial water Substances 0.000 claims description 8
- 238000005273 aeration Methods 0.000 claims description 6
- 238000010992 reflux Methods 0.000 claims description 6
- 238000005352 clarification Methods 0.000 claims description 4
- 238000006386 neutralization reaction Methods 0.000 claims description 4
- 238000009287 sand filtration Methods 0.000 claims description 4
- 238000004065 wastewater treatment Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 abstract description 2
- 238000011033 desalting Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- 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
- C02F1/001—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
- C02F1/02—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
- 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
- C02F7/00—Aeration of stretches of water
Abstract
The invention relates to a high-low salt wastewater separation system and a method, wherein the system comprises: the system comprises waste water conveying pumps connected with waste water terminals of a power plant, each waste water conveying pump is connected with a separate conductivity meter, each conductivity meter is returned through a separate backflow valve to be connected with each waste water terminal of the power plant, each conductivity meter is connected with a high-salinity waste water pool through a separate high-salinity waste water conveying valve, and each conductivity meter is connected with a recovery water pool through a separate low-salinity waste water conveying valve; in the method matched with the system, the high-low salt wastewater is distinguished through the online conductivity meter, the high-low salt wastewater and the low-salt wastewater which are distinguished and removed are respectively treated by pipelines and valves of different devices which are already treated by a water pool, the low-salt wastewater can be recycled, and the high-salt wastewater is directly evaporated through an evaporation tower. Compared with the prior art, the invention has the advantages of energy saving, environmental protection, improvement of the utilization efficiency of waste water and the like.
Description
Technical Field
The invention relates to the technical field of power plant wastewater treatment, in particular to a high-low salt wastewater separation system and a method.
Background
The first-stage existing makeup water regeneration wastewater pool, the fine desalination regeneration wastewater pool and the unit drainage tank of the power plant. The second stage is the waste water pond of available full-film system, fine desalting neutralizing waste water pond, drainage channel of machine set, etc.
The main sources of the wastewater comprise anion-cation bed regeneration wastewater, reverse osmosis, ultrafiltration acid-base washing wastewater, fine desalination mixed bed regeneration wastewater and the like. Because the components of the wastewater are complex, the prior art can not carry out high-low classification treatment on the wastewater. And the treatment process is complex, the cost is high, the economical efficiency is poor, the profitability is not good, and the waste of water resources is caused.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a high-low salt wastewater separation system and a method.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides a high low salt waste water piece-rate system, this system includes the waste water delivery pump that is connected with each waste water terminal of power plant, every the waste water delivery pump all is connected with independent conductivity table separately, every the conductivity table all separately through independent backward flow valve return respectively with each waste water terminal of power plant connects, every the conductivity table all still is connected with the high salt wastewater disposal basin through independent high salt waste water delivery valve separately, every the conductivity table all still is connected with the recovery pond through independent low salt waste water delivery valve separately.
Furthermore, each waste water terminal of the power plant comprises a fine desalting regeneration waste water pool, a make-up water regeneration waste water pool, a full-film waste water pool, a unit drainage tank and a fine desalting neutralization waste water pool.
Furthermore, the high-salinity wastewater pond is also connected with a tail-end wastewater pond for aeration and sand filtration treatment.
Furthermore, the terminal wastewater pond is also connected with an evaporation tower for final evaporation treatment.
Furthermore, the recovery water tank is also connected with a recovery water clarification tank for treating the low-salt wastewater.
Further, the reclaimed water clarifier is also connected with a fire pool for finally receiving and storing the reclaimed water clarifier as a fire water source.
Further, the reclaimed water clarifier is also connected with a desulfurization industrial water pool which is used for finally receiving and storing the reclaimed water clarifier as a desulfurization industrial water source.
The invention also provides a high-low salt wastewater treatment method based on the high-low salt wastewater separation system, which specifically comprises the following steps: when the liquid level of each waste water terminal of the power plant exceeds a set value, starting the waste water delivery pump, closing the high-salt waste water delivery valve and the low-salt waste water delivery valve, opening the reflux valve, opening the conductivity meter to measure the conductivity of the waste water, closing the reflux valve when the measured value of the conductivity meter is stable and the time exceeds the set time, judging the measured value of the conductivity meter, if the measured value exceeds the set conductivity value, opening the high-salinity wastewater delivery valve, closing the low-salinity wastewater delivery valve, delivering the high-salinity wastewater to the high-salinity wastewater pool, performing subsequent aeration, sand filtration and evaporation treatment, if the measured value does not exceed the set conductivity value, and opening the low-salt wastewater delivery valve, closing the high-salt wastewater delivery valve, delivering the low-salt wastewater to the recovery water tank, and performing subsequent recovery water clarification treatment to obtain the low-salt wastewater serving as desulfurization industrial water and a fire-fighting water source.
Further, in the high-low salinity wastewater treatment method, each wastewater terminal of the power plant comprises a fine desalination regeneration wastewater pool, a make-up water regeneration wastewater pool, a full-film wastewater pool, a unit drainage tank and a fine desalination neutralization wastewater pool.
Further, the set value is 60%, the set time is 10 seconds, and the set conductivity value is 400 μ s/cm.
Compared with the prior art, the invention has the following advantages:
(1) the system of the invention arranges the waste water delivery pump, the valve, the outlet pipeline, the return pipeline, the conductivity meter and other equipment in each waste water tank. The high-salt wastewater is judged by the online conductivity meter, and the high-salt wastewater flows to the high-salt wastewater pool by switching the valves, is then subjected to aeration treatment and filtering by a shallow sand filter, is sent to the tail end wastewater pool, and is finally sent to the evaporation tower for treatment. The low-salt wastewater is sent to a recovery water tank, is sent to a recovery water clarification tank after being subjected to aeration treatment, and is finally used as fire water, desulfurization industrial water and industrial water sources of a whole plant, so that the low-salt wastewater is recycled, and the energy-saving and environment-friendly effects are achieved.
(2) The method uses the conductivity meter as important equipment for separating the high-salt wastewater and the low-salt wastewater, simultaneously sets the return pipeline to greatly improve the stability of the conductivity, can achieve the aim of separating the high-salt wastewater and the low-salt wastewater by using simple structures and equipment, improves the recovery and utilization rate of the wastewater, and has the advantages of energy conservation, emission reduction and environmental protection.
Drawings
FIG. 1 is a system framework diagram of an embodiment of the present invention.
Detailed Description
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, 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, shall fall within the scope of protection of the present invention.
Examples
(1) Device structure and connection relation:
as shown in FIG. 1, the system consists of a wastewater pond, a wastewater delivery pump, pipelines, an online conductivity meter, a high-salt wastewater delivery valve, a low-salt wastewater delivery valve and a return valve.
And when the liquid level of the wastewater pool exceeds 60%, starting a wastewater delivery pump, closing the high-salt wastewater delivery valve and the low-salt wastewater delivery valve, opening the reflux valve, closing the reflux valve when the numerical value of the conductivity meter is stable and the time exceeds 10 seconds, opening the high-salt delivery valve and closing the low-salt delivery valve if the conductivity exceeds 400 mu s/cm, and opening the low-salt delivery valve and closing the high-salt delivery valve if the conductivity is lower than 400 mu s/cm. The high-salinity wastewater is conveyed to a high swallow wastewater pool, and enters an evaporation tower for evaporation treatment after being aerated and filtered by a shallow sand filter. The low-salt wastewater enters a recovery water tank and is treated by a recovery water clarifying tank to be used as desulfurization industrial water and a fire-fighting water source.
(2) The improvement is as follows:
an outlet of the wastewater conveying pump is provided with an online conductivity meter for judging the conductivity;
a return pipeline is arranged at the outlet of the on-line conductivity meter and used for stabilizing the conductivity of the wastewater;
a high-low salt delivery valve is arranged, so that high-low salt wastewater can be separated;
the high-salinity wastewater pool and the recovery water pool are arranged to improve the wastewater utilization efficiency.
(3) The working principle is as follows:
the wastewater is subjected to high-low salt distinguishing through an online conductivity meter, and the high-low salt wastewater and the low-salt wastewater which are distinguished are respectively treated by pipelines and valves with different devices and treated water pools. The low-salt wastewater can be recycled. The high-salinity wastewater is directly evaporated by an evaporation tower.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a high low salt waste water piece-rate system, its characterized in that, this system include the waste water delivery pump that is connected with each waste water terminal of power plant, every the waste water delivery pump all with independent conductivity table separately is connected, every the conductivity table all separately through independent backward flow valve return with each waste water terminal of power plant connects, every the conductivity table all still is connected with high salt wastewater disposal basin through independent high salt waste water delivery valve separately, every the conductivity table all still is connected with the recovery pond through independent low salt waste water delivery valve separately.
2. The high and low salinity wastewater separation system of claim 1, wherein each wastewater terminal of said power plant comprises a fine desalination wastewater regeneration pond, a makeup water regeneration wastewater pond, a full membrane wastewater pond, a unit drain tank and a fine desalination wastewater neutralization pond.
3. The high and low salinity wastewater separation system of claim 1, wherein said high salinity wastewater pond is further connected to terminal wastewater ponds for aeration and sand filtration treatment.
4. A high and low salinity wastewater separation system according to claim 3, wherein said terminal wastewater pond is further connected to an evaporation tower for final evaporation treatment.
5. The high and low salinity wastewater separation system of claim 1, wherein said recovery pond is further connected to a recovery water clarifier for treating low salinity wastewater.
6. The high and low salinity wastewater separation system of claim 5, wherein said reclaimed water clarifier is further connected to a fire reservoir for ultimate receipt and storage as a fire water source into said reclaimed water clarifier.
7. The high and low salinity wastewater separation system of claim 5, wherein said reclaimed water clarifier is further connected to a desulfurization industrial pond for ultimate receipt and storage of said reclaimed water clarifier as a source of desulfurization industrial water.
8. The high-low salt wastewater treatment method based on the high-low salt wastewater separation system of claim 1, which is characterized by comprising the following steps: when the liquid level of each waste water terminal of the power plant exceeds a set value, starting the waste water delivery pump, closing the high-salt waste water delivery valve and the low-salt waste water delivery valve, opening the reflux valve, opening the conductivity meter to measure the conductivity of the waste water, closing the reflux valve when the measured value of the conductivity meter is stable and the time exceeds the set time, judging the measured value of the conductivity meter, if the measured value exceeds the set conductivity value, opening the high-salinity wastewater delivery valve, closing the low-salinity wastewater delivery valve, delivering the high-salinity wastewater to the high-salinity wastewater pool, performing subsequent aeration, sand filtration and evaporation treatment, if the measured value does not exceed the set conductivity value, and opening the low-salt wastewater delivery valve, closing the high-salt wastewater delivery valve, delivering the low-salt wastewater to the recovery water tank, and performing subsequent recovery water clarification treatment to obtain the low-salt wastewater serving as desulfurization industrial water and a fire-fighting water source.
9. The method as claimed in claim 8, wherein each wastewater terminal of the power plant includes a fine desalination wastewater regeneration tank, a make-up water wastewater regeneration tank, a full membrane wastewater tank, a unit water discharge tank and a fine desalination wastewater neutralization tank.
10. The method as claimed in claim 8, wherein the set value is 60%, the set time is 10 seconds, and the set conductivity value is 400 μ s/cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010847094.1A CN111847750A (en) | 2020-08-21 | 2020-08-21 | High-low salt wastewater separation system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010847094.1A CN111847750A (en) | 2020-08-21 | 2020-08-21 | High-low salt wastewater separation system and method |
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| Publication Number | Publication Date |
|---|---|
| CN111847750A true CN111847750A (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010847094.1A Pending CN111847750A (en) | 2020-08-21 | 2020-08-21 | High-low salt wastewater separation system and method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU987494A1 (en) * | 1981-04-03 | 1983-01-07 | Уральское Призводственно-Техническое Предприятие "Уралэнермет" | Method amd device for measuring boiler water salt content |
| CN202087248U (en) * | 2011-06-02 | 2011-12-28 | 湖北华世通生物医药科技有限公司 | Stirring and mixing system of sewage tank |
| CN204855650U (en) * | 2015-07-23 | 2015-12-09 | 常州博瑞电力自动化设备有限公司 | Extraction conductivity measurement structure |
| CN208038098U (en) * | 2018-03-05 | 2018-11-02 | 中国神华能源股份有限公司 | Thermal power plant precision processing regenerative wastewater water saving fixtures |
| CN212640193U (en) * | 2020-08-21 | 2021-03-02 | 华能国际电力股份有限公司上海石洞口第二电厂 | High-low salt wastewater separation system |
-
2020
- 2020-08-21 CN CN202010847094.1A patent/CN111847750A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU987494A1 (en) * | 1981-04-03 | 1983-01-07 | Уральское Призводственно-Техническое Предприятие "Уралэнермет" | Method amd device for measuring boiler water salt content |
| CN202087248U (en) * | 2011-06-02 | 2011-12-28 | 湖北华世通生物医药科技有限公司 | Stirring and mixing system of sewage tank |
| CN204855650U (en) * | 2015-07-23 | 2015-12-09 | 常州博瑞电力自动化设备有限公司 | Extraction conductivity measurement structure |
| CN208038098U (en) * | 2018-03-05 | 2018-11-02 | 中国神华能源股份有限公司 | Thermal power plant precision processing regenerative wastewater water saving fixtures |
| CN212640193U (en) * | 2020-08-21 | 2021-03-02 | 华能国际电力股份有限公司上海石洞口第二电厂 | High-low salt wastewater separation system |
Non-Patent Citations (1)
| Title |
|---|
| 郑传明，吕桂琴: "《物理化学实验 第2版》", 北京理工大学出版社, pages: 335 * |
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