LU505308B1 - Method for utilizing reuse water of industrial wastewater of power plant to desulfurization process water - Google Patents
Method for utilizing reuse water of industrial wastewater of power plant to desulfurization process water Download PDFInfo
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- LU505308B1 LU505308B1 LU505308A LU505308A LU505308B1 LU 505308 B1 LU505308 B1 LU 505308B1 LU 505308 A LU505308 A LU 505308A LU 505308 A LU505308 A LU 505308A LU 505308 B1 LU505308 B1 LU 505308B1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 223
- 239000010842 industrial wastewater Substances 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims abstract description 65
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 32
- 230000023556 desulfurization Effects 0.000 title claims abstract description 32
- 239000002351 wastewater Substances 0.000 claims abstract description 20
- 238000004065 wastewater treatment Methods 0.000 claims abstract description 8
- 230000007613 environmental effect Effects 0.000 claims abstract description 6
- 238000001914 filtration Methods 0.000 claims description 64
- 238000004062 sedimentation Methods 0.000 claims description 62
- 230000015271 coagulation Effects 0.000 claims description 22
- 238000005345 coagulation Methods 0.000 claims description 22
- 239000007787 solid Substances 0.000 claims description 16
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 14
- 238000001514 detection method Methods 0.000 claims description 10
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 238000004064 recycling Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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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
- C02F1/008—Control or steering systems not provided for elsewhere in subclass C02F
-
- 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
- C02F1/52—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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/001—Upstream control, i.e. monitoring for predictive control
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/29—Chlorine compounds
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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)
- Filtration Of Liquid (AREA)
Abstract
A method for utilizing reuse water of industrial wastewater of power plant to desulfurization process water, includes the following steps: grading wastewater: wherein the wastewater is graded; processing according to grades: wherein the graded wastewater is led into a graded wastewater treatment system, and is treated, according to different grades, in the fastest, most environmental friendly and energy-saving treatment method, to obtain reuse water of industrial wastewater, and the reuse water is stored in a reuse water tank; grading users: wherein users of desulfurization process water are graded, and the primary user is allowed use the reuse water of industrial wastewater; the secondary user is not allowed to use the reuse water of industrial wastewater; introducing the reuse water: wherein the reuse water of industrial wastewater is incorporated into a water consumption mother pipe of the primary user for direct use, through a water diversion pipeline system. The present disclosure can quickly treat the reuse water with high efficiency and low cost, which improves the recycling rate of industrial wastewater, improves the operation reliability of the desulfurization process water system, and reduces the risk of contaminating the water in the process water system caused by directly replenishing water into the process water tank.
Description
METHOD FOR UTILIZING REUSE WATER OF INDUSTRIAL WASTEWATER OF
POWER PLANT TO DESULFURIZATION PROCESS WATER
[0001] The present disclosure relates to the technical field of environmental protection in thermal power plants, and in particular to a method for utilizing reuse water of industrial wastewater of power plant to desulfurization process water.
[0002] At present, in the field of industrial wastewater processing of power plants in China, wastewater is generally treated to achieve "up-to-standard discharge". With the improvement of environmental protection awareness in recent years, more new power plants choose to first treat the wastewater to achieve "up-to-standard reuse", so as to reduce the impact on the environment and ecosystem.
[0003] Generally, the reuse water is used for plant greening and coal yard spraying, where exist problems such as low recycling rate, less available users and difficult to realize full-capacity reusing.
[0004] The application rate of limestone/gypsum wet desulfurization process in thermal power plants is about 80%. Under rated working condition of some power plant, the process water consumption of desulfurization system is about 100m°/h. The water consumption is large. The process water of desulfurization system adopts the output water of primary reverse osmosis of desalination of sea water as normal water source, and firefighting water as emergency water source, so the water production cost is costly.
[0005] A large part of industrial wastewater in thermal power plants is the wastewater with good quality discharged from the daily production of the units, and is directly discharged or completely recycled for miscellaneous use in the plants after processing, resulting in waste of resources. On this basis, by comparing the "Technical Specification Indexes for Reuse Water of Industrial Wastewater" and "Quality Requirements for Desulfurization Process Water
Replenishing", it is found that the two are close to each other, and it is believed that the reuse water of industrial wastewater can be used as the desulfurization process water to improve the recycling rate of industrial wastewater.
[0006] In addition, some wastewater with good quality can reach the "Technical
Specification Indexes for Reuse Water of Industrial Wastewater" only through some steps in the treatment process. However, the existing technology basically requires that all wastewater goes through all the treatment processes, which causes large depletion of treatment devices, has high treatment cost and long treatment time, and makes it difficult to meet the supply demand.
[0007] To solve the above problems, the present disclosure provides a method for utilizing reuse water of industrial wastewater of power plant to desulfurization process water, aiming at solving the above technical problem, proposed in the background technology, of how to quickly treat industrial wastewater into reuse water and utilize it to desulfurization process water at a low cost.
[0008] In order to achieve the above object, the following technical solutions are provided according to the present disclosure. A method for utilizing reuse water of industrial wastewater of power plant to desulfurization process water, includes the following steps:
[0009] S1, grading wastewater: wherein, before entering the treatment process, the wastewater produced by unit devices of the power plant is first passed through a water quality detection and grade system, and a treatment grade of the wastewater is determined according to the detected data;
[0010] S2, processing according to grades: wherein the graded wastewater obtained in step
S1 is led into a graded wastewater treatment system, and is treated, according to different grades, in the fastest, most environmental friendly and energy-saving treatment method, to obtain reuse water of industrial wastewater, and the reuse water is stored in a reuse water tank;
[0011] S3, grading users: wherein, by comparing the "Technical Specification Indexes for
Reuse Water of Industrial Wastewater" and "Quality Requirements for Desulfurization
Process Water Replenishing", users of desulfurization process water are graded, and the primary user is allowed use the reuse water of industrial wastewater; the secondary user is not allowed to use the reuse water of industrial wastewater;
[0012] S4, introducing the reuse water: wherein the reuse water of industrial wastewater obtained in step S2 1s incorporated into a water consumption mother pipe of the primary user obtained in step S3 for direct use, through a water diversion pipeline system.
[0013] Further, the water quality detection and grade system in step S1 includes a COD sensor, a suspended solid sensor, a pH sensor and a chloride ion sensor.
[0014] Further, the graded wastewater treatment system in step S2 includes a coagulation device, a sedimentation device, a filtration device and a pH value adjusting device. Input ends of the coagulation device, the sedimentation device, the filtration device and the pH value adjusting device are respectively connected to an output end of the water quality detection and grade system through pipes. Output ends of the coagulation device, the sedimentation device, the filtration device and the pH value adjusting device are respectively connected to a reuse water collecting pipe through pipes. An output end of the reuse water collecting pipe is connected to a reuse water tank. Front ends of the coagulation device, the sedimentation device, the filtration device and the pH value adjusting device are each provided with a grading input solenoid valve. Rear ends of the coagulation device, the sedimentation device, the filtration device and the pH value adjusting device are each provided with an electric control water pump.
[0015] Further, a suspended solid sensor, a sedimentation cut-off solenoid valve, and a sedimentation output check valve are sequentially arranged between the output end of the coagulation device and the output end of the sedimentation device and in the reuse water collecting pipe. Between the suspended solid sensor and the sedimentation cut-off solenoid valve, the reuse water collecting pipe is connected to the input end of the sedimentation device through a sedimentation diversion pipe. A sedimentation diversion solenoid valve is arranged in the sedimentation diversion pipe.
[0016] Further, a chloride ion sensor, a filtration cut-off solenoid valve, and a filtration output check valve are sequentially arranged between the output end of the sedimentation device and the output end of the filtration device and in the reuse water collecting pipe.
Between the chloride ion sensor and the filtration cut-off solenoid valve, the reuse water collecting pipe is connected to the input end of the filtration device through a filtration diversion pipe. A filtration diversion solenoid valve is arranged in the filtration diversion pipe.
[0017] Further, a pH sensor, a pH value adjusting cut-off solenoid valve, and a pH value adjusting output check valve are sequentially arranged between the output end of the filtration device and the output end of the pH value adjusting device and in the reuse water collecting pipe. Between the pH sensor and the pH value adjusting cut-off solenoid valve, the reuse water collecting pipe is connected to the input end of the pH value adjusting device through a pH value adjusting diversion pipe. A pH value adjusting diversion solenoid valve is arranged in the pH value adjusting diversion pipe.
[0018] Further, the primary user in step S3 includes: flushing water of pipe cleaner and process water system.
[0019] Further, the secondary user in step S3 includes: mechanical seal water of slurry circulating pump.
[0020] Further, the water diversion pipeline system in step S4 includes a water diversion pipeline. An input end of the water diversion pipeline is arranged in the reuse water tank.
Multiple output ends of the water diversion pipeline are respectively connected to multiple primary users in step S3. A reuse water pump is arranged in the water diversion pipeline.
[0021] Further, a rear end of the reuse water pump is provided with a security filter.
[0022] Compared with the conventional technology, the present disclosure has the following advantageous effects.
[0023] The water quality detection and grade system is used to cooperate with the graded wastewater treatment system to quickly treat the reuse water with high efficiency and low cost, which improves the recycling rate of industrial wastewater, improves the operation reliability of the desulfurization process water system, and reduces the risk of contaminating the water in the process water system caused by directly replenishing water into the process water tank.
[0024] FIG. 1 is a schematic diagram showing the water circuit structure at the front end of a reuse water tank according to the present disclosure; and
[0025] FIG. 2 is a schematic diagram showing the water circuit structure at the rear end of the reuse water tank according to the present disclosure.
[0026] Reference numerals in the drawings are listed as follows: 11 reuse water collecting pipe; 12 grading input solenoid valve; 13 electric control water pump; 21 suspended solid sensor, 22 sedimentation cut-off solenoid valve; 23 sedimentation output check valve; 24 sedimentation diversion pipe; 25 sedimentation diversion solenoid valve; 31 chloride ion 5 sensor; 32 filtration cut-off solenoid valve; 33 filtration output check valve; 34 filtration diversion pipe; 35 filtration diversion solenoid valve; 41 pH sensor, 42 pH value adjusting cut-off solenoid valve; 43 pH value adjusting output check valve; 44 pH value adjusting diversion pipe; 45 pH value adjusting diversion solenoid valve; 51 water diversion pipeline; 52 reuse water pump; 53 security filter.
[0027] In order to facilitate the understanding of the present disclosure, the present disclosure will be described more comprehensively with reference to the relevant drawings, in which several embodiments of the present disclosure are shown. However, the present disclosure can be implemented in different forms, not limited to the embodiments described in this paper, and on the contrary, these embodiments are provided to make the disclosure of the present disclosure more thorough and comprehensive.
[0028] It should be noted that if an element is referred to as being "fixed" to another element, the former element can be directly on the latter element, or there may be an intermediate element existing therebetween. If an element is considered to be "connected" to another element, the former element can be directly connected to the latter element, or there may be an intermediate element existing therebetween. The terms, such as "vertical", "horizontal", "left", and "right", and similar expressions used in this specification are for illustrative purposes only.
[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as are commonly used by those skilled in the art of the present disclosure, and the terms used herein in the description of the present disclosure are for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The term "and/or" as used herein includes any and all combinations of one or more related listed items.
[0030] In an embodiment, a method for utilizing reuse water of industrial wastewater of power plant to desulfurization process water, includes the following steps:
[0031] S1, grading wastewater: wherein, before entering the treatment process, the wastewater produced by unit devices of the power plant 1s first passed through a water quality detection and grade system, and a treatment grade of the wastewater is determined according to the detected data; 10032] S2, processing according to grades: wherein the graded wastewater obtained in step
S1 is led into a graded wastewater treatment system, and is treated, according to different grades, in the fastest, most environmental friendly and energy-saving treatment method, to obtain reuse water of industrial wastewater, and the reuse water is stored in a reuse water tank;
[0033] S3, grading users: wherein, by comparing the "Technical Specification Indexes for
Reuse Water of Industrial Wastewater" and "Quality Requirements for Desulfurization
Process Water Replenishing", users of desulfurization process water are graded, and the primary user is allowed use the reuse water of industrial wastewater; the secondary user is not allowed to use the reuse water of industrial wastewater; and
[0034] S4, introducing the reuse water: wherein the reuse water of industrial wastewater obtained in step S2 is incorporated into a water consumption mother pipe of the primary user obtained in step S3 for direct use, through a water diversion pipeline system.
[0035] In an embodiment, the water quality detection and grade system in step S1 includes a
COD sensor, a suspended solid sensor, a pH sensor and a chloride ion sensor. The design obtains various data of the industrial wastewater through the multiple sensors, thereby grading the industrial wastewater. The industrial wastewater with a higher value of COD is graded as the fourth level; the industrial wastewater with a lower value of COD but a higher value of suspended solids is graded as the third level; the industrial wastewater with a lower value of
COD, a lower value of suspended solids, but a high value of chloride ion is graded as the second level; and the industrial wastewater, of which only the pH value does not meet the standard, is graded as the first level.
[0036] In the embodiment, with reference to FIG. 1, the graded wastewater treatment system in step S2 includes a coagulation device, a sedimentation device, a filtration device and a pH value adjusting device. Input ends of the coagulation device, the sedimentation device, the filtration device and the pH value adjusting device are respectively connected to an output end of the water quality detection and grade system through pipes. Output ends of the coagulation device, the sedimentation device, the filtration device and the pH value adjusting device are respectively connected to a reuse water collecting pipe 11 through pipes. An output end of the reuse water collecting pipe 11 is connected to a reuse water tank. Front ends of the coagulation device, the sedimentation device, the filtration device and the pH value adjusting device are each provided with a grading input solenoid valve 12. Rear ends of the coagulation device, the sedimentation device, the filtration device and the pH value adjusting device are each provided with an electric control water pump 13. A suspended solid sensor 21, a sedimentation cut-off solenoid valve 22, and a sedimentation output check valve 23 are sequentially arranged between the output end of the coagulation device and the output end of the sedimentation device and in the reuse water collecting pipe 11. Between the suspended solid sensor 21 and the sedimentation cut-off solenoid valve 22, the reuse water collecting pipe 11 is connected to the input end of the sedimentation device through a sedimentation diversion pipe 24. A sedimentation diversion solenoid valve 25 is arranged in the sedimentation diversion pipe 24. A chloride ion sensor 31, a filtration cut-off solenoid valve 32, and a filtration output check valve 33 are sequentially arranged between the output end of the sedimentation device and the output end of the filtration device and in the reuse water collecting pipe 11. Between the chloride ion sensor 31 and the filtration cut-off solenoid valve 32, the reuse water collecting pipe 11 is connected to the input end of the filtration device through a filtration diversion pipe 34. A filtration diversion solenoid valve 35 is arranged in the filtration diversion pipe 34. A pH sensor 41, a pH value adjusting cut-off solenoid valve 42, and a pH value adjusting output check valve 43 are sequentially arranged between the output end of the filtration device and the output end of the pH value adjusting device and in the reuse water collecting pipe 11. Between the pH sensor 41 and the pH value adjusting cut-off solenoid valve 42, the reuse water collecting pipe 11 is connected to the input end of the pH value adjusting device through a pH value adjusting diversion pipe 44. A pH value adjusting diversion solenoid valve 45 is arranged in the pH value adjusting diversion pipe 44.
This design controls the opening/closing of the grading input solenoid valve 12 according to the grade of the industrial wastewater. The industrial wastewater of the fourth level is introduced into the coagulation device for treatment, the industrial wastewater of the third level is introduced into the sedimentation device for treatment, the industrial wastewater of the second level is introduced into the filtration device for treatment, and the industrial wastewater of the first level is introduced into the pH value adjusting device for treatment.
The water after treatment by each device is output to the reuse water collecting pipe 11 through the electric control water pump 13. The water output by the coagulation device needs to pass through the suspended solid sensor 21. If the value meets the standard, the water directly passes through the sedimentation cut-off solenoid valve 22 and the sedimentation output check valve 23. If the value does not meet the standard, the sedimentation cut-off solenoid valve 22 is closed, and the sedimentation diversion solenoid valve 25 is opened, and the water enters the sedimentation device for treatment through the sedimentation diversion pipe 24. The water output by the sedimentation device needs to pass through the chloride ion sensor 31. If the value meets the standard, the water directly passes through the filtration cut-off solenoid valve 32 and the filtration output check valve 33. If the value does not meet the standard, the filtration cut-off solenoid valve 32 is closed, and the filtration diversion solenoid valve 35 is opened, and the water enters the filtration device for treatment through the filtration diversion pipe 34. The water output by the filtration device needs to pass through the pH sensor 41. If the value meets the standard, the water directly passes through the pH value adjusting cut-off solenoid valve 42 and the pH value adjusting output check valve 43. If the value does not meet the standard, the pH value adjusting cut-off solenoid valve 42 is closed, and the pH value adjusting diversion solenoid valve 45 is opened, and the water enters the pH value adjusting device for treatment through the pH value adjusting diversion pipe 44, and finally enters the reuse water tank through the reuse water collecting pipe 11 for future use.
[0037] In an embodiment, the primary user in step S3 includes: flushing water of pipe cleaner and process water system, and the secondary user in step S3 includes: mechanical seal water of slurry circulating pump.
[0038] In an embodiment, with reference to FIG. 2, the water diversion pipeline system in step S4 includes a water diversion pipeline 51. An input end of the water diversion pipeline 51 is arranged in the reuse water tank. Multiple output ends of the water diversion pipeline 51 are respectively connected to multiple primary users in step S3. A reuse water pump 52 is arranged in the water diversion pipeline 51. À rear end of the reuse water pump 52 is provided with a security filter 53. According to this design, the reuse water pump 52 pumps the reuse water in the reuse water tank to the multiple primary users for direct use, after filtration by the security filter 53.
[0039] The operating principle is as follows. Firstly, various data of the industrial wastewater are obtained through multiple sensors, so as to grade the industrial wastewater.
The industrial wastewater with a higher value of COD is graded as the fourth level; the industrial wastewater with a lower value of COD but a higher value of suspended solids 1s graded as the third level; the industrial wastewater with a lower value of COD, a lower value of suspended solids, but a high value of chloride ion is graded as the second level; and the industrial wastewater, of which only the pH value does not meet the standard, is graded as the first level. The opening/closing of the multiple grading input solenoid valves 12 are controlled according to the grade of the industrial wastewater. The industrial wastewater of the fourth level is introduced into the coagulation device for treatment, the industrial wastewater of the third level is introduced into the sedimentation device for treatment, the industrial wastewater of the second level is introduced into the filtration device for treatment, and the industrial wastewater of the first level is introduced into the pH value adjusting device for treatment.
The water after treatment by each device is output to the reuse water collecting pipe 11 through the electric control water pump 13. The water output by the coagulation device needs to pass through the suspended solid sensor 21. If the value meets the standard, the water directly passes through the sedimentation cut-off solenoid valve 22 and the sedimentation output check valve 23. If the value does not meet the standard, the sedimentation cut-off solenoid valve 22 is closed, and the sedimentation diversion solenoid valve 25 is opened, and the water enters the sedimentation device for treatment through the sedimentation diversion pipe 24. The water output by the sedimentation device needs to pass through the chloride ion sensor 31. If the value meets the standard, the water directly passes through the filtration cut-off solenoid valve 32 and the filtration output check valve 33. If the value does not meet the standard, the filtration cut-off solenoid valve 32 is closed, and the filtration diversion solenoid valve 35 is opened, and the water enters the filtration device for treatment through the filtration diversion pipe 34. The water output by the filtration device needs to pass through the pH sensor 41. If the value meets the standard, the water directly passes through the pH value adjusting cut-off solenoid valve 42 and the pH value adjusting output check valve 43. If the value does not meet the standard, the pH value adjusting cut-off solenoid valve 42 is closed, and the pH value adjusting diversion solenoid valve 45 is opened, and the water enters the pH value adjusting device for treatment through the pH value adjusting diversion pipe 44, and finally enters the reuse water tank through the reuse water collecting pipe 11 for future use. The reuse water pump 52 pumps the reuse water in the reuse water tank to the multiple primary users for direct use, after filtration by the security filter 53.
[0040] The present disclosure has been described by way of example in conjunction with the accompanying drawings. Apparently, the specific implementation of the present disclosure is not limited by the embodiments as described above. The non-substantive improvements made to the conception and technical solutions according to the present disclosure, or direct applications of the conception and the technical solutions according to the present disclosure in other scenarios without improvement fall within the protection scope of the present disclosure.
Claims (10)
1. A method for utilizing reuse water of industrial wastewater of power plant to desulfurization process water, comprising the following steps: S1, grading wastewater: wherein, before entering treatment process, the wastewater produced by unit devices of the power plant is first passed through a water quality detection and grade system, and a treatment grade of the wastewater is determined according to detected data; S2, processing according to grades: wherein the graded wastewater obtained in step S1 is led into a graded wastewater treatment system, and is treated, according to different grades, in the fastest, most environmental friendly and energy-saving treatment method, to obtain reuse water of industrial wastewater, and the reuse water is stored in a reuse water tank; S3, grading users: wherein, by comparing "Technical Specification Indexes for Reuse Water of Industrial Wastewater" and "Quality Requirements for Desulfurization Process Water Replenishing", users of desulfurization process water are graded, and the primary user is allowed use the reuse water of industrial wastewater; the secondary user is not allowed to use the reuse water of industrial wastewater; S4, introducing the reuse water: wherein the reuse water of industrial wastewater obtained in step S2 is incorporated into a water consumption mother pipe of the primary user obtained in step S3 for direct use, through a water diversion pipeline system.
2. The method for utilizing reuse water of industrial wastewater of power plant to desulfurization process water according to claim 1, wherein the water quality detection and grade system in step S1 comprises a COD sensor, a suspended solid sensor, a pH sensor and a chloride ion sensor.
3. The method for utilizing reuse water of industrial wastewater of power plant to desulfurization process water according to claim 1, wherein the graded wastewater treatment system in step S2 comprises a coagulation device, a sedimentation device, a filtration device and a pH value adjusting device, input ends of the coagulation device, the sedimentation device, the filtration device and the pH value adjusting device are respectively connected to an output end of the water quality detection and grade system through pipes, output ends of the coagulation device, the sedimentation device, the filtration device and the pH value adjusting device are respectively connected to a reuse water collecting pipe (11) through pipes, wherein an output end of the reuse water collecting pipe (11) 1s connected to a reuse water tank, front ends of the coagulation device, the sedimentation device, the filtration device and the pH value adjusting device are each provided with a grading input solenoid valve (12), and rear ends of the coagulation device, the sedimentation device, the filtration device and the pH value adjusting device are each provided with an electric control water pump (13).
4. The method for utilizing reuse water of industrial wastewater of power plant to desulfurization process water according to claim 3, wherein a suspended solid sensor (21), a sedimentation cut-off solenoid valve (22), and a sedimentation output check valve (23) are sequentially arranged between the output end of the coagulation device and the output end of the sedimentation device and in the reuse water collecting pipe (11); between the suspended solid sensor (21) and the sedimentation cut-off solenoid valve (22), the reuse water collecting pipe (11) is connected to the input end of the sedimentation device through a sedimentation diversion pipe (24); and a sedimentation diversion solenoid valve (25) is arranged in the sedimentation diversion pipe (24).
5. The method for utilizing reuse water of industrial wastewater of power plant to desulfurization process water according to claim 3, wherein a chloride ion sensor (31), a filtration cut-off solenoid valve (32), and a filtration output check valve (33) are sequentially arranged between the output end of the sedimentation device and the output end of the filtration device and in the reuse water collecting pipe (11); between the chloride ion sensor (31) and the filtration cut-off solenoid valve (32), the reuse water collecting pipe (11) is connected to the input end of the filtration device through a filtration diversion pipe (34); and a filtration diversion solenoid valve (35) is arranged in the filtration diversion pipe (34).
6. The method for utilizing reuse water of industrial wastewater of power plant to desulfurization process water according to claim 3, wherein a pH sensor (41), a pH value adjusting cut-off solenoid valve (42), and a pH value adjusting output check valve (43) are sequentially arranged between the output end of the filtration device and the output end of the pH value adjusting device and in the reuse water collecting pipe (11); between the pH sensor (41) and the pH value adjusting cut-off solenoid valve (42), the reuse water collecting pipe (11) is connected to the input end of the pH value adjusting device through a pH value adjusting diversion pipe (44); and a pH value adjusting diversion solenoid valve (45) is arranged in the pH value adjusting diversion pipe (44).
7. The method for utilizing reuse water of industrial wastewater of power plant to desulfurization process water according to claim 1, wherein the primary user in step S3 comprises: flushing water of pipe cleaner and process water system.
8. The method for utilizing reuse water of industrial wastewater of power plant to desulfurization process water according to claim 1, wherein the secondary user in step S3 comprises: mechanical seal water of slurry circulating pump.
9. The method for utilizing reuse water of industrial wastewater of power plant to desulfurization process water according to claim 1, wherein the water diversion pipeline system in step S4 comprises a water diversion pipeline (51), wherein an input end of the water diversion pipeline (51) is arranged in the reuse water tank, a plurality of output ends of the water diversion pipeline (51) are respectively connected to the plurality of primary users in step S3, and a reuse water pump (52) is arranged in the water diversion pipeline (51).
10. The method for utilizing reuse water of industrial wastewater of power plant to desulfurization process water according to claim 9, wherein a rear end of the reuse water pump (52) is provided with a security filter (53).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU505308A LU505308B1 (en) | 2023-10-17 | 2023-10-17 | Method for utilizing reuse water of industrial wastewater of power plant to desulfurization process water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU505308A LU505308B1 (en) | 2023-10-17 | 2023-10-17 | Method for utilizing reuse water of industrial wastewater of power plant to desulfurization process water |
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| Publication Number | Publication Date |
|---|---|
| LU505308B1 true LU505308B1 (en) | 2024-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LU505308A LU505308B1 (en) | 2023-10-17 | 2023-10-17 | Method for utilizing reuse water of industrial wastewater of power plant to desulfurization process water |
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| Country | Link |
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| LU (1) | LU505308B1 (en) |
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2023
- 2023-10-17 LU LU505308A patent/LU505308B1/en active IP Right Grant
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