CN109836000A - A kind of plant gas wastewater zero discharge system and method based on cooling tower zero blowdown - Google Patents
A kind of plant gas wastewater zero discharge system and method based on cooling tower zero blowdown Download PDFInfo
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- CN109836000A CN109836000A CN201910294873.0A CN201910294873A CN109836000A CN 109836000 A CN109836000 A CN 109836000A CN 201910294873 A CN201910294873 A CN 201910294873A CN 109836000 A CN109836000 A CN 109836000A
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- water
- cooling tower
- outlet
- medicine
- entrance
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- 238000001816 cooling Methods 0.000 title claims abstract description 64
- 239000002351 wastewater Substances 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 144
- 239000003814 drug Substances 0.000 claims abstract description 55
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 36
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 28
- 239000000701 coagulant Substances 0.000 claims abstract description 17
- 239000003381 stabilizer Substances 0.000 claims abstract description 15
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 14
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 13
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 13
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 13
- 239000007789 gas Substances 0.000 claims description 22
- 239000010865 sewage Substances 0.000 claims description 14
- 239000010802 sludge Substances 0.000 claims description 12
- 239000006228 supernatant Substances 0.000 claims description 5
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 3
- 239000011575 calcium Substances 0.000 claims description 3
- 229910052791 calcium Inorganic materials 0.000 claims description 3
- 229910001424 calcium ion Inorganic materials 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims 2
- 239000005864 Sulphur Substances 0.000 claims 2
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 claims 1
- WJEIYVAPNMUNIU-UHFFFAOYSA-N [Na].OC(O)=O Chemical compound [Na].OC(O)=O WJEIYVAPNMUNIU-UHFFFAOYSA-N 0.000 claims 1
- 239000000292 calcium oxide Substances 0.000 claims 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims 1
- 239000001257 hydrogen Substances 0.000 claims 1
- 229910052739 hydrogen Inorganic materials 0.000 claims 1
- -1 hydrogen Calcium oxide Chemical class 0.000 claims 1
- 230000005764 inhibitory process Effects 0.000 description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- UEJWRQDKIBEMCR-UHFFFAOYSA-L calcium;sodium;carbonate Chemical compound [Na+].[Ca+2].[O-]C([O-])=O UEJWRQDKIBEMCR-UHFFFAOYSA-L 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 230000003134 recirculating effect Effects 0.000 description 2
- 230000003260 anti-sepsis Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a kind of plant gas wastewater zero discharge systems and method based on cooling tower zero blowdown, the outlet of water inlet pipe, the outlet of calcium hydroxide medicine system, the outlet of sodium carbonate medicine system and the outlet of coagulant medicine system are connected with the entrance for the treatment of nature water system, the outlet for the treatment of nature water system is connected with the outlet of sulfuric acid medicine system by the water inlet of the entrance and cooling tower bottom of pipeline and Guan Houyu boiler feed water system, the outlet at bottom of cooling tower is connected with the entrance of bypath filter system, the wastewater outlet of boiler feed water system is connected with the entrance of bypath filter system, the outlet of bypath filter system is connected with the water inlet at the top of cooling tower, the outlet of water stabilizer medicine system is connected with the water inlet of cooling tower bottom, the system and method can be realized the zero-emission of plant gas waste water.
Description
Technical field
The present invention relates to a kind of plant gas wastewater zero discharge system and method, it is related to a kind of based on cooling tower zero blowdown
Plant gas wastewater zero discharge system and method.
Background technique
Country and local environmental protection policy take target water, efflux wastewater water and water quality to carry out stringent limit power plant
System, more and more thermal power plants require to design by full factory's waste water zero emission, and thermal power plant implements wastewater zero discharge and has become general trend of events institute
Become.Circulating cooling type plant gas water system generally comprises: circulation, boiler feed water system, life fire-fighting water system
System.Gas Turbine Plant water system is single, and recovering and reutilizing waste water approach is few, needs to explore Gas Turbine Plant wastewater zero discharge system
System and method.
Summary of the invention
It is an object of the invention to overcome the above-mentioned prior art, a kind of combustion based on cooling tower zero blowdown is provided
Pneumoelectric factory waste water zero discharge system and method, the system and method can be realized the zero-emission of plant gas waste water.
In order to achieve the above objectives, the plant gas wastewater zero discharge system packet of the present invention based on cooling tower zero blowdown
Include water inlet pipe, calcium hydroxide medicine system, sodium carbonate medicine system, coagulant medicine system, treating nature water system, sulfuric acid
Medicine system, boiler feed water system, cooling tower, bypath filter system and water stabilizer medicine system；
The outlet of water inlet pipe, the outlet of calcium hydroxide medicine system, the outlet of sodium carbonate medicine system and coagulant add
The outlet of medicine system is connected with the entrance for the treatment of nature water system, outlet and the sulfuric acid medicine system for the treatment of nature water system
Outlet is connected by the water inlet of the entrance and cooling tower bottom of pipeline and Guan Houyu boiler feed water system, the bottom of cooling tower
Portion outlet is connected with the entrance of bypath filter system, the wastewater outlet of boiler feed water system and the entrance of bypath filter system
Be connected, the outlet of bypath filter system is connected with the water inlet at the top of cooling tower, the outlet of water stabilizer medicine system with it is cold
But the water inlet of tower bottom is connected.
It further include sludge dewatering system, wherein the entrance of sludge dewatering system and the outlet at bottom for the treatment of nature water system
It is connected, the supernatant outlet of sludge dewatering system is connected with the entrance for the treatment of nature water system.
It further include life water system and domestic sewage processing system, wherein at the outlet for water system of living and sanitary sewage
The entrance of reason system is connected, and the outlet of domestic sewage processing system is connected with the entrance for the treatment of nature water system.
The water outlet of cooling tower bottom is connected through water circulating pump with the entrance of bypath filter system.
Plant gas zero emission method of wastewater of the present invention based on cooling tower zero blowdown the following steps are included:
The waste water of water inlet pipe output enters in treating nature water system, the hydroxide of calcium hydroxide medicine system output
The coagulant of calcium, the sodium carbonate of sodium carbonate medicine system output and the output of coagulant medicine system enters treating nature water system
System removes the silicon and sulfate radical in waste water by calcium hydroxide, while reducing the basicity of waste water, is removed in waste water by sodium carbonate
Calcium ion, while pass through coagulant realize waste water separation of solid and liquid, treating nature water system output water and sulfuric acid dosing system
It is divided into two-way after the sulfuric acid mixing of system output, wherein enter in the feed water system of boiler all the way, another way is fed as cooling tower
The water inlet through cooling tower bottom enters in cooling tower after water is mixed with the water stabilizer that water stabilizer medicine system exports, wherein
By the sulfuric acid that sulfuric acid medicine system exports the pH of waste water is adjusted between 7.5-8.0, while the basicity of waste water is reduced to
0.5mmol/L is hereinafter, and make the 1/2Ca of waste water2+Concentration is reduced to 0.5mmol/L or less；
The water of cooling tower bottom output enters in bypath filter system, and the waste water of boiler feed water system output enters
In bypath filter system, the water of bypath filter system output enters in cooling tower through the water inlet at the top of cooling tower, realizes base
In the plant gas wastewater zero discharge of cooling tower zero blowdown.
The invention has the following advantages:
It is of the present invention based on the plant gas wastewater zero discharge system and method for cooling tower zero blowdown in concrete operations
When, the characteristics of system water each according to plant gas, the fouling type ion in sewage is removed by treating nature water system, then
As the water source of circulation and boiler feed water system, so that recirculated water concentration rate is greatly improved, so that cooling tower zero
Discharge, and finally realize the purpose of plant gas wastewater zero discharge, structure is simple, and easy to operate, practicability is extremely strong.
Further, the waste water that life water system generates is used as source water reuse after processing, and boiler feed water system generates
Chemical wastewater be used as cooling tower raw make up water after processing, realize full factory waste water zero discharge.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Wherein, 1 it is treating nature water system, 2 be sludge dewatering system, 3 be boiler feed water system, 4 is cooling tower, 5
For bypath filter system, 6 be water circulating pump, 7 make a living running water system, 8 be domestic sewage processing system, 9 be calcium hydroxide dosing
System, 10 be sodium carbonate medicine system, 11 be coagulant medicine system, 12 be sulfuric acid medicine system, 13 be water stabilizer dosing system
System.
Specific embodiment
The invention will be described in further detail with reference to the accompanying drawing:
With reference to Fig. 1, the plant gas wastewater zero discharge system of the present invention based on cooling tower zero blowdown includes into water
Pipeline, calcium hydroxide medicine system 9, sodium carbonate medicine system 10, coagulant medicine system 11, treating nature water system 1, sulfuric acid
Medicine system 12, boiler feed water system 3, cooling tower 4, bypath filter system 5 and water stabilizer medicine system 13；Water inlet pipe
Outlet, the outlet of calcium hydroxide medicine system 9, the outlet of sodium carbonate medicine system 10 and the outlet of coagulant medicine system 11 with
The entrance for the treatment of nature water system 1 is connected, and the outlet for the treatment of nature water system 1 and the outlet of sulfuric acid medicine system 12 pass through pipe
The water inlet of 4 bottom of entrance and cooling tower of road and Guan Houyu boiler feed water system 3 is connected, the outlet at bottom of cooling tower 4
It is connected with the entrance of bypath filter system 5, the wastewater outlet and the entrance phase of bypath filter system 5 of boiler feed water system 3
Connection, the outlet of bypath filter system 5 are connected with the water inlet at 4 top of cooling tower, the outlet of water stabilizer medicine system 13 and
The water inlet of 4 bottom of cooling tower is connected.
The invention also includes sludge dewatering systems 2, wherein the entrance of sludge dewatering system 2 and treating nature water system 1
Outlet at bottom is connected, and the supernatant outlet of sludge dewatering system 2 is connected with the entrance for the treatment of nature water system 1.
The invention also includes life water system 7 and domestic sewage processing systems 8, wherein the outlet and life of life water system 7
The entrance of sewage disposal system 8 living is connected, the outlet and the entrance phase for the treatment of nature water system 1 of domestic sewage processing system 8
Connection；The water outlet of 4 bottom of cooling tower is connected through water circulating pump 6 with the entrance of bypath filter system 5.
Plant gas zero emission method of wastewater of the present invention based on cooling tower zero blowdown the following steps are included:
The waste water of water inlet pipe output enters in treating nature water system 1, the hydrogen-oxygen that calcium hydroxide medicine system 9 exports
Change calcium, the sodium carbonate that sodium carbonate medicine system 10 exports and the coagulant that coagulant medicine system 11 exports to enter raw water and locate in advance
Reason system 1 removes the silicon and sulfate radical in waste water by calcium hydroxide, while reducing the basicity of waste water, is removed by sodium carbonate
Calcium ion in waste water, while by the separation of solid and liquid of coagulant realization waste water, the water and sulfuric acid that treating nature water system 1 exports
It is divided into two-way after the sulfuric acid mixing that medicine system 12 exports, wherein enter in the feed water system of boiler all the way, another way is as cold
But the water inlet through 4 bottom of cooling tower after 4 make-up water of tower is mixed with the water stabilizer that water stabilizer medicine system 13 exports enters cold
But in tower 4, wherein by the sulfuric acid that sulfuric acid medicine system 12 exports the pH of waste water is adjusted between 7.5-8.0, gives up simultaneously
The basicity of water is reduced to 0.5mmol/L hereinafter, and making the 1/2Ca of waste water2+Concentration is reduced to 0.5mmol/L or less；
4 bottom of cooling tower output water enter in bypath filter system 5, boiler feed water system 3 export waste water into
Enter into bypath filter system 5, the water that bypath filter system 5 exports enters cooling tower 4 through the water inlet at 4 top of cooling tower
In, realize the plant gas wastewater zero discharge based on 4 zero blowdown of cooling tower.
The water entered in treating nature water system 1 includes production water source, 2 supernatant of sludge dewatering system and treated
Sanitary sewage.
The supplement water of cooling tower 4 realizes the high concentration ratio of circulation under the scale inhibition of water stabilizer and antisepsis,
For cooling tower 4 without water vessel, low chlorine root recirculated water, at 15 times of concentration rate or more, 4 zero blowdown of cooling tower, full factory's waste water zero
Discharge, circulation scale inhibition, corrosion meet " Code for design of industrial recirculating cooling water treatment " (GB 50050-2007) requirement；
There is a water vessel for cooling tower 4, low chlorine root recirculated water, at 25 times of concentration rate or more, 4 zero blowdown of cooling tower, full factory's waste water zero
Discharge, circulation scale inhibition, corrosion meet " Code for design of industrial recirculating cooling water treatment " (GB 50050-2007) requirement.
The sanitary sewage that domestic sewage processing system 8 the exports also reuse after the processing for the treatment of nature water system 1；Sludge dewatering
The dewatered supernatant of system 2 is back to reuse after treating nature water system 1 is handled.
Claims (5)
1. a kind of plant gas wastewater zero discharge system based on cooling tower zero blowdown, which is characterized in that including water inlet pipe, hydrogen
Calcium oxide medicine system (9), sodium carbonate medicine system (10), coagulant medicine system (11), treating nature water system (1), sulphur
Sour medicine system (12), boiler feed water system (3), cooling tower (4), bypath filter system (5) and water stabilizer medicine system
(13)；
The outlet of water inlet pipe, the outlet of calcium hydroxide medicine system (9), the outlet of sodium carbonate medicine system (10) and coagulant
The outlet of medicine system (11) is connected with the entrance for the treatment of nature water system (1), the outlet for the treatment of nature water system (1) and sulphur
The outlet of sour medicine system (12) is by pipeline and the entrance of Guan Houyu boiler feed water system (3) and cooling tower (4) bottom
Water inlet is connected, and the outlet at bottom of cooling tower (4) is connected with the entrance of bypath filter system (5), boiler feed water system
(3) wastewater outlet is connected with the entrance of bypath filter system (5), and the outlet and cooling tower (4) of bypath filter system (5) are pushed up
The water inlet in portion is connected, and the outlet of water stabilizer medicine system (13) is connected with the water inlet of cooling tower (4) bottom.
2. the plant gas wastewater zero discharge system according to claim 1 based on cooling tower zero blowdown, which is characterized in that
It further include sludge dewatering system (2), wherein the entrance of sludge dewatering system (2) and the outlet at bottom for the treatment of nature water system (1)
It is connected, the supernatant outlet of sludge dewatering system (2) is connected with the entrance for the treatment of nature water system (1).
3. the plant gas wastewater zero discharge system according to claim 1 based on cooling tower zero blowdown, which is characterized in that
It further include life water system (7) and domestic sewage processing system (8), wherein at the outlet of life water system (7) and sanitary sewage
The entrance of reason system (8) is connected, and the outlet of domestic sewage processing system (8) is connected with the entrance for the treatment of nature water system (1)
It is logical.
4. the plant gas wastewater zero discharge system according to claim 1 based on cooling tower zero blowdown, which is characterized in that
The water outlet of cooling tower (4) bottom is connected through water circulating pump (6) with the entrance of bypath filter system (5).
5. a kind of plant gas zero emission method of wastewater based on cooling tower zero blowdown, which comprises the following steps:
The waste water of water inlet pipe output enters in treating nature water system (1), the hydrogen-oxygen of calcium hydroxide medicine system (9) output
The coagulant for changing calcium, the sodium carbonate of sodium carbonate medicine system (10) output and coagulant medicine system (11) output enters raw water
Pretreatment system (1) removes the silicon and sulfate radical in waste water by calcium hydroxide, while reducing the basicity of waste water, passes through carbonic acid
Sodium removes the calcium ion in waste water, while the separation of solid and liquid of waste water is realized by coagulant, treating nature water system (1) output
Water is divided into two-way after mixing with the sulfuric acid that sulfuric acid medicine system (12) exports, wherein enters in the feed water system of boiler all the way, separately
Through cooling tower (4) bottom after being mixed all the way as the make-up water of cooling tower (4) with the water stabilizer that water stabilizer medicine system (13) exports
The water inlet in portion enters in cooling tower (4), wherein makes the pH tune of waste water by the sulfuric acid that sulfuric acid medicine system (12) export
Section is between 7.5-8.0, while the basicity of waste water is reduced to 0.5mmol/L hereinafter, and making the 1/2Ca of waste water2+Concentration reduces
To 0.5mmol/L or less；
The water of cooling tower (4) bottom output enters in bypath filter system (5), the waste water of boiler feed water system (3) output
It enters in bypath filter system (5), the water of bypath filter system (5) output is entered through the water inlet at the top of cooling tower (4)
In cooling tower (4), the plant gas wastewater zero discharge for being based on cooling tower (4) zero blowdown is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910294873.0A CN109836000A (en) | 2019-04-12 | 2019-04-12 | A kind of plant gas wastewater zero discharge system and method based on cooling tower zero blowdown |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910294873.0A CN109836000A (en) | 2019-04-12 | 2019-04-12 | A kind of plant gas wastewater zero discharge system and method based on cooling tower zero blowdown |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109836000A true CN109836000A (en) | 2019-06-04 |
Family
ID=66887039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910294873.0A Pending CN109836000A (en) | 2019-04-12 | 2019-04-12 | A kind of plant gas wastewater zero discharge system and method based on cooling tower zero blowdown |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111646593A (en) * | 2020-06-05 | 2020-09-11 | 广西广宇水资源技术开发有限公司 | Industrial cooling wastewater treatment and recycling process |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3397788A (en) * | 1965-10-21 | 1968-08-20 | Union Tank Car Co | Water treating apparatus |
| CN102381786A (en) * | 2011-11-19 | 2012-03-21 | 董兆祥 | Zero-discharge treatment system for industrial circulating water |
| JP2015128754A (en) * | 2014-01-08 | 2015-07-16 | 三菱重工業株式会社 | Water treatment system and method |
| CN205245871U (en) * | 2015-12-21 | 2016-05-18 | 中国能源建设集团广东省电力设计研究院有限公司 | Cooling structure of modified combustion engine power boiler drainage |
| CN209797650U (en) * | 2019-04-12 | 2019-12-17 | 西安西热水务环保有限公司 | zero-discharge system for waste water of gas power plant based on zero-pollution discharge of cooling tower |
-
2019
- 2019-04-12 CN CN201910294873.0A patent/CN109836000A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3397788A (en) * | 1965-10-21 | 1968-08-20 | Union Tank Car Co | Water treating apparatus |
| CN102381786A (en) * | 2011-11-19 | 2012-03-21 | 董兆祥 | Zero-discharge treatment system for industrial circulating water |
| JP2015128754A (en) * | 2014-01-08 | 2015-07-16 | 三菱重工業株式会社 | Water treatment system and method |
| CN205245871U (en) * | 2015-12-21 | 2016-05-18 | 中国能源建设集团广东省电力设计研究院有限公司 | Cooling structure of modified combustion engine power boiler drainage |
| CN209797650U (en) * | 2019-04-12 | 2019-12-17 | 西安西热水务环保有限公司 | zero-discharge system for waste water of gas power plant based on zero-pollution discharge of cooling tower |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111646593A (en) * | 2020-06-05 | 2020-09-11 | 广西广宇水资源技术开发有限公司 | Industrial cooling wastewater treatment and recycling process |
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