CN210193565U - Waste water zero discharge system of whole factory of reclaimed water source gas power plant - Google Patents
Waste water zero discharge system of whole factory of reclaimed water source gas power plant Download PDFInfo
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- CN210193565U CN210193565U CN201920976420.1U CN201920976420U CN210193565U CN 210193565 U CN210193565 U CN 210193565U CN 201920976420 U CN201920976420 U CN 201920976420U CN 210193565 U CN210193565 U CN 210193565U
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Abstract
The utility model discloses a waste water zero release system of whole factory of normal water source gas power plant, including domestic water source, domestic water system, production water source, former water pretreatment system, clean water basin, circulating water supply pond, raw water desalination system, dense pond, fresh water basin, chemical system, industrial waste water treatment system, the concentrated system of degree of depth, production water tank and solidification system, this system can be through the zero release of concentrated realization waste water step by step.
Description
Technical Field
The utility model belongs to the technical field of the water treatment, a waste water zero discharge system of gas power plant is related to, concretely relates to waste water zero discharge system of whole factory of normal water source gas power plant.
Background
The action plan for preventing and treating water pollution requires promotion of the utilization of the reclaimed water, and has the projects of steel, thermal power, chemical industry, pulping and papermaking, printing and dyeing and the like which are not fully utilized under the condition of using the reclaimed water, and the newly-added water permission is not approved. The newly built power plant generally adopts urban reclaimed water as a power plant production water source, and the environmental evaluation generally requires zero discharge of wastewater.
Compared with coal-fired power generation, natural gas power generation has multiple advantages. Almost no SO emission in gas power generation2And the discharge amount of smoke dust and nitrogen oxides is only 1/10 of coal-fired power generation, so that the method has high environmental protection value. In addition, the gas turbine set is started and stopped flexibly, the peak regulation for a power grid is facilitated, the occupied area of a gas power plant is small, and the local power supply can be realized in an urban load center. Since the new century, the gas power generation industry in China is rapidly developed.
In addition, the gas power plant has no characteristics of a tail end water system for desulfurization, coal conveying and slag removal of the consumable high-salinity wastewater, and circulating water and chemical wastewater of the circulating cooling type gas power plant cannot be consumed in the plant, so that the environmental protection requirement cannot be met, namely zero emission cannot be realized.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a waste water zero discharge system of whole factory of normal water source gas power plant, this system can realize the zero release of waste water through concentrating step by step.
In order to achieve the purpose, the reclaimed water source gas power plant whole-plant wastewater zero discharge system comprises a domestic water source, a domestic water system, a production water source, a raw water pretreatment system, a clean water tank, a circulating water supplement tank, a raw water desalination system, a concentrated water tank, a fresh water tank, a chemical system, an industrial wastewater treatment system, a deep concentration system, a production water tank and a solidification system;
the domestic water source is communicated with the inlet of the domestic water system, the outlet of the domestic water system and the production water source are communicated with the inlet of the raw water pretreatment system, the outlet of the raw water pretreatment system is communicated with the inlet of the clean water tank, the outlet of the clean water tank is communicated with the inlet of the circulating water replenishing water tank and the inlet of the raw water desalting system, the concentrated water outlet of the raw water desalting system is communicated with the inlet of the concentrated water tank, the produced water outlet of the raw water desalting system is communicated with the inlet of the fresh water tank, the outlet of the fresh water tank is communicated with the inlet of the chemical system and the circulating water replenishing water tank, the high-salinity wastewater outlet of the chemical system is communicated with the inlet of the concentrated water tank, the low-salinity wastewater outlet of the chemical system is communicated with the inlet of the industrial wastewater treatment system, the outlet of the industrial wastewater treatment system is communicated with the, the water production outlet of the deep concentration system is communicated with the inlet of the circulating water replenishing pool through the water production tank, and the concentrated water outlet of the deep concentration system is communicated with the inlet of the curing system.
The circulating water cooling tower is characterized by further comprising a cooling water cooling tower, and an outlet of the circulating water supplementing water tank is communicated with a water tank at the bottom of the cooling water cooling tower.
The outlet of the water tank at the bottom of the cooling water cooling tower is communicated with the water inlet at the top of the cooling water cooling tower through a bypass flow filtering system.
The system is characterized by further comprising a sludge dewatering system, wherein an inlet of the sludge dewatering system is communicated with a sludge discharge port at the bottom of the raw water pretreatment system, and a supernatant outlet of the sludge dewatering system is communicated with an inlet of the raw water pretreatment system.
The raw water pretreatment system adopts a lime-sodium carbonate softening process.
The raw water desalination system adopts a reverse osmosis desalination process.
The chemical system comprises a boiler water supply system and a water vapor circulating system which are communicated, wherein the boiler water supply system adopts a cation bed-anion bed-mixed bed or an EDI process; the high-salinity wastewater output by the chemical system is ion exchange regeneration wastewater; the low-salt wastewater output by the chemical system is equipment washing water, boiler pollution discharge and chemical sampling.
The deep concentration system adopts a high-salt reverse osmosis process, an electrodialysis concentration process or a thermal concentration process.
The solidification system adopts an evaporative crystallization process or a flue gas evaporation process.
The utility model discloses following beneficial effect has:
waste water zero discharge system of whole factory of normal water source gas power plant when concrete operation, realize concentrating step by step of waste water through former water pretreatment systems, former water desalination system, chemical system and the concentrated system of degree of depth, wherein, the clear water that obtains of concentrating step by step enters into during the circulating water supplyes pond, concentrated dense water that finally obtains step by step then solidifies through curing system to realize the zero release of waste water of whole factory of normal water source gas power plant, simple structure, convenient operation, the practicality is extremely strong.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Wherein, 1 is a living water system, 2 is a living sewage treatment system, 3 is a raw water pretreatment system, 4 is a sludge dewatering system, 5 is a clean water tank, 6 is a raw water desalting system, 7 is a fresh water tank, 8 is a concentrated water tank, 9 is a chemical system, 10 is an industrial wastewater treatment system, 11 is a deep concentration system, 12 is a water production tank, 13 is a solidification system, 14 is a circulating water replenishing water tank, 15 is a cooling water cooling tower, 16 is a water tank, and 17 is a bypass flow filtration system.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings:
referring to fig. 1, the system for zero discharge of wastewater from a whole plant of a reclaimed water source gas power plant of the present invention includes a reclaimed water source, a reclaimed water system 1, a production water source, a raw water pretreatment system 3, a clean water tank 5, a circulating water supplement tank 14, a raw water desalination system 6, a concentrated water tank 8, a fresh water tank 7, a chemical system 9, an industrial wastewater treatment system 10, a deep concentration system 11, a production water tank 12 and a solidification system 13; the domestic water source is communicated with the inlet of the domestic water system 1, the outlet of the domestic water system 1 and the production water source are communicated with the inlet of the raw water pretreatment system 3, the outlet of the raw water pretreatment system 3 is communicated with the inlet of the clean water tank 5, the outlet of the clean water tank 5 is communicated with the inlet of the circulating water replenishing water tank 14 and the inlet of the raw water desalination system 6, the concentrated water outlet of the raw water desalination system 6 is communicated with the inlet of the concentrated water tank 8, the produced water outlet of the raw water desalination system 6 is communicated with the inlet of the fresh water tank 7, the outlet of the fresh water tank 7 is communicated with the inlet of the chemical system 9 and the circulating water replenishing water tank 14, the high-salinity wastewater outlet of the chemical system 9 is communicated with the inlet of the concentrated water tank 8, the low-salinity wastewater outlet of the chemical system 9 is communicated with the inlet of the industrial wastewater treatment system 10, and the, the outlet of the concentrated water tank 8 is communicated with the inlet of a deep concentration system 11, the produced water outlet of the deep concentration system 11 is communicated with the inlet of a circulating water replenishing water tank 14 through a produced water tank 12, and the concentrated water outlet of the deep concentration system 11 is communicated with the inlet of a curing system 13.
The utility model also comprises a cooling water cooling tower 15, and the outlet of the circulating water supplementing water tank 14 is communicated with a water tank 16 at the bottom of the cooling water cooling tower 15; the outlet of the water tank 16 at the bottom of the cooling water cooling tower 15 is communicated with the water inlet at the top of the cooling water cooling tower 15 through a bypass flow filtering system 17.
The utility model discloses still include sludge dewatering system 4, the entry of sludge dewatering system 4 is linked together with the mud discharging mouth of former pretreatment of water system 3 bottom, and the supernatant export of sludge dewatering system 4 is linked together with former pretreatment of water system 3's entry.
The utility model discloses a concrete working process does:
the domestic sewage output by the domestic water system 1 enters the raw water pretreatment system 3 through the domestic sewage treatment system 2, the production sewage output by the production water source enters the raw water pretreatment system 3, a coagulant and a coagulant aid are added into the raw water pretreatment system 3, and the mixed sewage in the raw water pretreatment system 3 is subjected to solid-liquid separation under the action of the coagulant and the coagulant aid, wherein the sewage is obtained by the solid-liquid separation of the mixed sewage in the raw water pretreatment system 3Reacting with calcium hydroxide and sodium carbonate to remove calcium and magnesium ions and partial sulfate radical, silicon and other scaling ions, realizing solid-liquid separation under the action of coagulant and coagulant aid, and further reducing turbidity by mechanical filtration and ultrafiltration, wherein the pH value is 7.5-8.0, the turbidity is less than or equal to 1NTU, 1/2Ca2+The total hardness is less than or equal to 0.5mmol/L and less than or equal to 1mmol/L, SDI and less than or equal to 5.0, and the requirement of the quality of inlet water of the raw water desalination system 6 is met; wherein, the separated clean water enters a clean water tank 5, the clean water output by the clean water tank 5 is divided into two paths, one path enters a circulating water supplementing water tank 14, the other path enters a raw water desalting system 6 for desalting treatment, the produced water output by the raw water desalting system 6 enters a fresh water tank 7, the concentrated water output by the raw water desalting system 6 enters a concentrated water tank 8, the water output by the fresh water tank 7 is divided into two paths, one path enters the circulating water supplementing water tank 14, the other path enters a chemical system 9 for treatment by adopting a cation bed-anion bed-mixed bed or EDI process, the high-salinity wastewater output by the chemical system 9 enters the concentrated water tank 8, the low-salinity wastewater output by the chemical system 9 enters the circulating water supplementing water tank 14 through an industrial wastewater treatment system 10, and the concentrated water output by the concentrated water tank 8 enters a deep concentration system 11 for concentration, the produced water output by the deep concentration system 11 enters a circulating water replenishing pool 14 through a produced water tank 12, and the concentrated water output by the deep concentration system 11 is solidified through a solidification system 13.
The raw water pretreatment system 3 adopts a lime-sodium carbonate softening process; the raw water desalting system 6 adopts a reverse osmosis desalting process; the chemical system 9 comprises a boiler water supply system and a water vapor circulating system which are communicated, wherein the boiler water supply system adopts a cation bed-anion bed-mixed bed or an EDI process; the high-salinity wastewater output by the chemical system 9 is ion exchange regeneration wastewater; the low-salt wastewater output by the chemical system 9 is equipment washing water, boiler pollution discharge and chemical sampling; the deep concentration system 11 adopts a high-salt reverse osmosis process, an electrodialysis concentration process or a thermal concentration process; the solidification system 13 adopts an evaporative crystallization process or a flue gas evaporation process.
The water coming from the circulating water supplementing water tank 14 comprises the water outlet of the raw water pretreatment system 3, the water produced by the raw water desalination system 6, the low-salinity wastewater of the chemical system 9 and the water produced by the deep concentration system 11, all of which are zero-hardness water, the circulating water supplementing water tank 14 is used as the supplementing water of the cooling water cooling tower 15, the supplementing water of the cooling water cooling tower 15 realizes the high concentration rate of the circulating water system under the scale inhibition and corrosion prevention effects of the water stabilizer output by the water stabilizer dosing system, the concentration rate is more than 25 times, zero pollution discharge of the cooling water cooling tower 15 is realized, and the scale inhibition and corrosion of the circulating water system meet the national standard requirements.
The above description is only an example of the implementation steps of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (9)
1. A reclaimed water source gas power plant whole-plant wastewater zero discharge system is characterized by comprising a domestic water source, a domestic water system (1), a production water source, a raw water pretreatment system (3), a clean water tank (5), a raw water desalination system (6), a concentrated water tank (8), a fresh water tank (7), a chemical system (9), a circulating water supplement tank (14), an industrial wastewater treatment system (10), a deep concentration system (11), a water production tank (12) and a solidification system (13);
the domestic water source is communicated with the inlet of the domestic water system (1), the outlet of the domestic water system (1) and the production water source are communicated with the inlet of the raw water pretreatment system (3), the outlet of the raw water pretreatment system (3) is communicated with the inlet of the clean water tank (5), the outlet of the clean water tank (5) is communicated with the inlet of the circulating water replenishing water tank (14) and the inlet of the raw water desalination system (6), the concentrated water outlet of the raw water desalination system (6) is communicated with the inlet of the concentrated water tank (8), the produced water outlet of the raw water desalination system (6) is communicated with the inlet of the fresh water tank (7), the outlet of the fresh water tank (7) is communicated with the inlet of the chemical system (9) and the circulating water replenishing water tank (14), the high-salt wastewater outlet of the chemical system (9) is communicated with the inlet of the concentrated water tank (8), and the low-salt wastewater outlet of the chemical system (9) is communicated with the inlet of, an outlet of the industrial wastewater treatment system (10) is communicated with an inlet of a circulating water replenishing water tank (14), an outlet of the concentrated water tank (8) is communicated with an inlet of a deep concentration system (11), a water production outlet of the deep concentration system (11) is communicated with an inlet of the circulating water replenishing water tank (14) through a water production tank (12), and a concentrated water outlet of the deep concentration system (11) is communicated with an inlet of a curing system (13).
2. The reclaimed water source gas power plant wastewater zero discharge system according to claim 1, further comprising a cooling water cooling tower (15), wherein an outlet of the recirculated water replenishing tank (14) is communicated with a tank (16) at the bottom of the cooling water cooling tower (15).
3. The reclaimed water source gas power plant wastewater zero discharge system according to claim 2, wherein the outlet of the water tank (16) at the bottom of the cooling water cooling tower (15) is communicated with the water inlet at the top of the cooling water cooling tower (15) through the bypass filtering system (17).
4. The reclaimed water source gas power plant wastewater zero discharge system according to claim 1, further comprising a sludge dewatering system (4), wherein an inlet of the sludge dewatering system (4) is communicated with a sludge discharge port at the bottom of the raw water pretreatment system (3), and a supernatant outlet of the sludge dewatering system (4) is communicated with an inlet of the raw water pretreatment system (3).
5. The reclaimed water source gas power plant wastewater zero discharge system according to claim 1, wherein the raw water pretreatment system (3) adopts a lime-sodium carbonate softening process.
6. The reclaimed water source gas power plant wastewater zero discharge system according to claim 1, wherein the raw water desalination system (6) adopts a reverse osmosis desalination process.
7. The reclaimed water source gas power plant whole plant wastewater zero discharge system according to claim 1, wherein the chemical system (9) comprises a boiler make-up water system and a water vapor circulation system which are communicated with each other, wherein the boiler make-up water system adopts a cation bed-anion bed-mixed bed or an EDI process; the high-salinity wastewater output by the chemical system (9) is ion exchange regeneration wastewater; the low-salt wastewater output by the chemical system (9) is equipment washing water, boiler blow-down and chemical sampling.
8. The reclaimed water source gas power plant factory wastewater zero discharge system according to claim 1, wherein the deep concentration system (11) adopts a high salt reverse osmosis process, an electrodialysis concentration process or a thermal concentration process.
9. The reclaimed water source gas power plant wastewater zero discharge system of the claim 1 is characterized in that the solidification system (13) adopts an evaporative crystallization process or a flue gas evaporation process.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920976420.1U CN210193565U (en) | 2019-06-26 | 2019-06-26 | Waste water zero discharge system of whole factory of reclaimed water source gas power plant |
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| CN201920976420.1U CN210193565U (en) | 2019-06-26 | 2019-06-26 | Waste water zero discharge system of whole factory of reclaimed water source gas power plant |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110171893A (en) * | 2019-06-26 | 2019-08-27 | 西安热工研究院有限公司 | A kind of full factory waste water zero discharge system and method for water resource of reclaimed water plant gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110171893A (en) * | 2019-06-26 | 2019-08-27 | 西安热工研究院有限公司 | A kind of full factory waste water zero discharge system and method for water resource of reclaimed water plant gas |
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