CN109019966A - A kind of processing unit and treatment process of Desulphurization for Coal-fired Power Plant waste water reuse - Google Patents
A kind of processing unit and treatment process of Desulphurization for Coal-fired Power Plant waste water reuse Download PDFInfo
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- CN109019966A CN109019966A CN201810944770.XA CN201810944770A CN109019966A CN 109019966 A CN109019966 A CN 109019966A CN 201810944770 A CN201810944770 A CN 201810944770A CN 109019966 A CN109019966 A CN 109019966A
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- water
- liquid separator
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- waste water
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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
- 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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/101—Sulfur compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- 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
Abstract
The present invention relates to the processing units and treatment process of a kind of Desulphurization for Coal-fired Power Plant waste water reuse, belong to Air Pollution Control field and field of water pollution control.How desulfurization wastewater to be used using high efficient technology, reduces water resources consumption, be a technical problem urgently to be resolved.Processing unit of the invention includes wet desulfuration tower, it is characterized in that: it further include waste-water vortex station, high efficiency waste water purification system, cold water Tower System, gypsum rotational flow station and belt dewaterer, high efficiency waste water purification system includes medicine system, efficient solid-liquid separator backwashes water tank and efficient solid-liquid separator, solid-liquid separator connection, the water purification delivery outlet of efficient solid-liquid separator is connect with cold water Tower System, the underflow delivery outlet of the efficient solid-liquid separator is connect with belt dewaterer, wet desulfuration tower, gypsum rotational flow station and belt dewaterer are sequentially connected, gypsum rotational flow station is connect with waste-water vortex station.Of the invention reasonable in design, simple process, can improve water utilization rate.
Description
Technical field
The present invention relates to Air Pollution Control field and field of water pollution control, in particular to a kind of Desulphurization for Coal-fired Power Plant is useless
The processing unit and treatment process that water recycles.
Background technique
Increasingly strict with national environmental protection policy, most of in-service fired power generating unit and newly-built fired power generating unit are provided with cigarette
Desulfurization device guarantees boiler smoke qualified discharge.Currently, it is lime that coal fired power plant flue gas desulfurization device is most widely used
Stone-gypsum wet sulfur removal technology, the Main By product of the technique are desulfurized gypsum and desulfurization wastewater, and desulfurization wastewater contains largely
Impurity, such as suspended matter, inorganic ion, heavy metal ion, water body can be just discharged by needing to carry out purified treatment.
Many desulfuration waste water treatment process newly developed in recent years, such as evaporation, reuse, clarification technique, though this kind of technique
Can so there be certain effect to the recycling of desulfurization wastewater, but problem is also relatively more, than if you need to newly-increased large number of equipment facility, land occupation
Area is big, investment is big, process flow is complicated, equipment failure rate is high, operational effect is undesirable, dehydrating effect is bad, Treatment of Sludge
Disposition is inconvenient, there are waste water outlet phenomenons etc..
In recent years, with national " economizing energy law ", " Law on Environmental Protection ", " water prevention and cure of pollution action plan " and accordingly
With water, the promulgation of drainage charge policy (water resources taxes, exceeded is taken drainage fee), and " the water-saving rule of power industry Eleventh Five-Year Plan
Draw " etc. as defined in gradually implement, coal-burning power plant is used, displacement and water quality have stringent index to limit.However, how to use
High efficient technology uses desulfurization wastewater, reduces water resources consumption, is a technical problem urgently to be resolved.As publication date is
On May 15th, 2018, in the Chinese patent of Publication No. CN108033622A, a kind of disclosed collaboration processing coal-burning power plant was thin
The system of particulate matter and desulfurization wastewater；And publication date is on 08 18th, 2017, the China of Publication No. CN107055885A
In patent, a kind of Desulphurization for Coal-fired Power Plant waste water reclaiming system and working method are disclosed, is difficult to reach using high efficient technology
The purpose that desulfurization wastewater is used.
Summary of the invention
It is an object of the invention to overcome the above deficiencies in the existing technologies, and provide it is a kind of reasonable in design,
Simple process can improve the processing unit and treatment process of the Desulphurization for Coal-fired Power Plant waste water reuse of water utilization rate.
Technical solution used by the present invention solves the above problems is: the processing dress of the Desulphurization for Coal-fired Power Plant waste water reuse
Set including wet desulfuration tower, design feature is: further include waste-water vortex station, high efficiency waste water purification system, cold water Tower System,
Gypsum rotational flow station and belt dewaterer, the high efficiency waste water purification system include medicine system, efficient solid-liquid separator backwash
Water tank and efficient solid-liquid separator, the medicine system are connected with efficient solid-liquid separator, the efficient solid-liquid separator recoil
Water tank, efficient solid-liquid separator and gypsum rotational flow station are sequentially connected, and the waste-water vortex station is connected with efficient solid-liquid separator,
The water purification delivery outlet of the efficient solid-liquid separator is connect with cold water Tower System, the underflow delivery outlet of the efficient solid-liquid separator with
Belt dewaterer connection, the wet desulfuration tower, gypsum rotational flow station and belt dewaterer be sequentially connected, the gypsum rotational flow station with
The connection of waste-water vortex station.
Preferably, cold water Tower System of the present invention includes cooling water system, water vapour condenser system and reservoir, institute
It states cold water Tower System and is provided with cooling tower outer wall, the cooling water system, water vapour condenser system and reservoir are installed in cool
In water tower systems, and cooling water system, water vapour condenser system and reservoir are arranged successively from top to bottom.
Preferably, efficient solid-liquid separator of the present invention is provided with two groups.
A kind for the treatment of process of Desulphurization for Coal-fired Power Plant waste water reuse, uses the Desulphurization for Coal-fired Power Plant waste water reuse
Processing unit, it is characterised in that: the step for the treatment of process of the Desulphurization for Coal-fired Power Plant waste water reuse is as follows:
A, Desulphurization for Coal-fired Power Plant waste water is delivered to efficient solid-liquid separator after the discharge of waste-water vortex station；
B, regulator is added into efficient solid-liquid separator for medicine system, and complex-precipitation zwitterion neutralizes and adjusts pH value of waste water
To 7~8；
C, after the completion of neutralization, start delivery pump, under the draft effect of delivery pump, high efficient solid and liquid separation carried out by filtration core,
The water purification of generation is delivered to cold water Tower System, supplements water as cooling tower cooling water side system；
D, the underflow in efficient solid-liquid separator is delivered to belt dewaterer；
E, the backwashing water in efficient solid-liquid separator backwash water tank is delivered to after backwashing to efficient solid-liquid separator
Gypsum rotational flow station；
F, by step a~e, desulfurization wastewater obtains efficient process and reuse, realizes that desulfurization wastewater recycles.
Preferably, the efficient solid-liquid separator in high efficiency waste water purification system of the present invention is a kind of pressure resistant vessel,
Have the function of buffering, neutralization, solid-liquor separation and heavy-metal ion removal, configure two groups, filtering is staggeredly carried out with backwash, is added
Medicine system directly by regulator addition in efficient solid-liquid separator, according to the pH value of solution in efficient solid-liquid separator and always from
Sub- concentration determines dosage, and cohesion, chemical combination occur for the suspended matter, zwitterion during dosing in solution, forms big
Grain solid content, then starts delivery pump, and bulky grain solid content is intercepted by filtration core, and purified water enters next link, waste water
When being concentrated into solid content and reaching 50~70%, underflow is delivered to belt dewaterer.
Preferably, medicine system of the present invention has complexing in for adjusting pH value of waste water and total ion concentration
And function.
Preferably, efficient solid-liquid separator backwashing water box-shaped of the present invention at back-purge system for cleaning
Filter core, backwashing wastewater enter gypsum rotational flow station.
Compared with prior art, the present invention having the following advantages that and effect: 1, waste water reclaiming improves water resource and utilizes
Rate saves water resource；2, simple process, technology maturation, system investments are few, and operating cost is low；3, raw water consumption is reduced, and saves electricity
Factory's production cost；4, high efficiency waste water purification system, materialization function are concentrated, and construction space is saved；5, without waste outlet, without secondary dirt
Dye, clean and environmental protection；6, economic, environmental protection, social benefit are considerable, have good application value.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the processing unit of Desulphurization for Coal-fired Power Plant waste water reuse in the embodiment of the present invention.
Fig. 2 is the structural schematic diagram of cold water Tower System in the embodiment of the present invention.
In figure: 1, waste-water vortex station；2, high efficiency waste water purification system；3, cold water Tower System；4, wet desulfuration tower；5, gypsum
Rotational flow station；6, belt dewaterer；2-1, medicine system；2-2, efficient solid-liquid separator backwash water tank；2-3, high efficiency solid-liquid point
From device；3-1, cooling water system；3-2, water vapour condenser system；3-3, cooling tower outer wall；3-4, reservoir.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawing and by embodiment, and following embodiment is to this hair
Bright explanation and the invention is not limited to following embodiments.
Embodiment.
Referring to Fig. 1 to Fig. 2, the processing unit of Desulphurization for Coal-fired Power Plant waste water reuse includes waste-water vortex station in the present embodiment
1, high efficiency waste water purification system 2, cold water Tower System 3, wet desulfuration tower 4, gypsum rotational flow station 5 and belt dewaterer 6, wherein high
Effect solid-liquid separator 2-3 is provided with two groups.
High efficiency waste water purification system 2 in the present embodiment includes medicine system 2-1, efficient solid-liquid separator backwash water tank
2-2 and efficient solid-liquid separator 2-3, medicine system 2-1 are connected with efficient solid-liquid separator 2-3, efficient solid-liquid separator recoil
Water tank 2-2, efficient solid-liquid separator 2-3 and gypsum rotational flow station 5 are sequentially connected.
Waste-water vortex station 1 in the present embodiment is connected with efficient solid-liquid separator 2-3, and efficient solid-liquid separator 2-3's is net
Water output is connect with cold water Tower System 3, and the underflow delivery outlet of efficient solid-liquid separator 2-3 is connect with belt dewaterer 6, wet
Method desulfurizing tower 4, gypsum rotational flow station 5 and belt dewaterer 6 are sequentially connected, and gypsum rotational flow station 5 is connect with waste-water vortex station 1.
Cold water Tower System 3 in the present embodiment includes cooling water system 3-1, water vapour condenser system 3-2 and reservoir 3-
4, cold water Tower System 3 is provided with cooling tower outer wall 3-3, and cooling water system 3-1, water vapour condenser system 3-2 and reservoir 3-4 are equal
It is mounted in cold water Tower System 3, and cooling water system 3-1, water vapour condenser system 3-2 and reservoir 3-4 are from top to bottom successively
Arrangement.
The step for the treatment of process of Desulphurization for Coal-fired Power Plant waste water reuse in the present embodiment, is as follows.
A, Desulphurization for Coal-fired Power Plant waste water is delivered to efficient solid-liquid separator 2-3 after being discharged from waste-water vortex station 1.
B, regulator is added into efficient solid-liquid separator 2-3 by medicine system 2-1, and complex-precipitation zwitterion is neutralized and adjusted
PH value of waste water is saved to 7~8.
C, after the completion of neutralization, start delivery pump, under the draft effect of delivery pump, high efficiency solid-liquid point is carried out by filtration core
From the water purification of generation is delivered to cold water Tower System 3, supplements water as cooling tower cooling water side system.
D, the underflow in efficient solid-liquid separator 2-3 is delivered to belt dewaterer 6.
E, the backwashing water in efficient solid-liquid separator backwash water tank 2-2 recoils to efficient solid-liquid separator 2-3
Gypsum rotational flow station 5 is delivered to after washing.
F, by step a~e, desulfurization wastewater obtains efficient process and reuse, realizes that desulfurization wastewater recycles.
Efficient solid-liquid separator 2-3 in the present embodiment high efficiency waste water purification system 2 is a kind of pressure resistant vessel, is had slow
Punching neutralizes, the function of solid-liquor separation and heavy-metal ion removal, configures two groups, filtering is staggeredly carried out with backwash, medicine system
2-1 directly by regulator addition in efficient solid-liquid separator 2-3, according to the pH value of solution in efficient solid-liquid separator 2-3 and
Total ion concentration determines dosage, and cohesion, chemical combination occur for the suspended matter, zwitterion during dosing in solution, is formed
Then bulky grain solid content starts delivery pump, bulky grain solid content is intercepted by filtration core, and purified water enters next link,
When Waste water concentrating to solid content reaches 50~70%, underflow is delivered to belt dewaterer 6.
Medicine system 2-1 in the present embodiment has for adjusting pH value of waste water and total ion concentration and is complexed and neutralizes function
Energy.For the back-purge system that efficient solid-liquid separator backwash water tank 2-2 is formed for cleaning filtration core, backwashing wastewater enters stone
Cream rotational flow station 5.
In addition, it should be noted that, the specific embodiments described in this specification, the shape of parts and components are named
Title etc. can be different, and above content is only to structure of the invention example explanation described in this specification.It is all according to
According to equivalence changes or simple change that the invention patent design structure, feature and principle is done, it is included in this hair
In the protection scope of bright patent.Those skilled in the art can do described specific embodiment various
The mode that the modify or supplement or adopt of various kinds is similar substitutes, and without departing from structure of the invention or surmounts present claims
Range defined in book, is within the scope of protection of the invention.
Claims (7)
1. a kind of processing unit of Desulphurization for Coal-fired Power Plant waste water reuse, including wet desulfuration tower, it is characterised in that: further include giving up
Water rotational flow station, high efficiency waste water purification system, cold water Tower System, gypsum rotational flow station and belt dewaterer, the efficient purification of waste water
System includes medicine system, efficient solid-liquid separator backwash water tank and efficient solid-liquid separator, the medicine system and efficiently
Solid-liquid separator connection, the efficient solid-liquid separator backwash water tank, efficient solid-liquid separator and gypsum rotational flow station successively connect
It connects, the waste-water vortex station is connected with efficient solid-liquid separator, the water purification delivery outlet and cooling tower of the efficient solid-liquid separator
System connection, the underflow delivery outlet of the efficient solid-liquid separator are connect with belt dewaterer, the wet desulfuration tower, gypsum eddy flow
It stands and belt dewaterer is sequentially connected, the gypsum rotational flow station is connect with waste-water vortex station.
2. the processing unit of Desulphurization for Coal-fired Power Plant waste water reuse according to claim 1, it is characterised in that: the cold water
Tower System includes cooling water system, water vapour condenser system and reservoir, and the cold water Tower System is provided with cooling tower outer wall, institute
It states cooling water system, water vapour condenser system and reservoir to be installed in cold water Tower System, and cooling water system, water vapour are cold
Solidifying system and reservoir are arranged successively from top to bottom.
3. the processing unit of Desulphurization for Coal-fired Power Plant waste water reuse according to claim 1, it is characterised in that: described efficient
Solid-liquid separator is provided with two groups.
4. a kind for the treatment of process of Desulphurization for Coal-fired Power Plant waste water reuse, uses the fire coal as described in claims 1 or 2 or 3
The processing unit that power plant desulfurization wastewater recycles, it is characterised in that: the treatment process of the Desulphurization for Coal-fired Power Plant waste water reuse
The step of it is as follows:
A, Desulphurization for Coal-fired Power Plant waste water is delivered to efficient solid-liquid separator after the discharge of waste-water vortex station；
B, regulator is added into efficient solid-liquid separator for medicine system, and complex-precipitation zwitterion neutralizes and adjusts pH value of waste water
To 7~8；
C, after the completion of neutralization, start delivery pump, under the draft effect of delivery pump, high efficient solid and liquid separation carried out by filtration core,
The water purification of generation is delivered to cold water Tower System, supplements water as cooling tower cooling water side system；
D, the underflow in efficient solid-liquid separator is delivered to belt dewaterer；
E, the backwashing water in efficient solid-liquid separator backwash water tank is delivered to after backwashing to efficient solid-liquid separator
Gypsum rotational flow station；
F, by step a~e, desulfurization wastewater obtains efficient process and reuse, realizes that desulfurization wastewater recycles.
5. the treatment process of Desulphurization for Coal-fired Power Plant waste water reuse according to claim 3, it is characterised in that: described efficient
Efficient solid-liquid separator in waste water purification system is a kind of pressure resistant vessel, has buffering, neutralization, solid-liquor separation and a removal huge sum of money
Belong to the function of ion, configures two groups, filtering is staggeredly carried out with backwash, and medicine system directly adds regulator in high efficiency solid-liquid
In separator, dosage, solution during dosing are determined according to the pH value of solution in efficient solid-liquid separator and total ion concentration
In suspended matter, zwitterion occur cohesion, chemical combination, formed bulky grain solid content, then start delivery pump, bulky grain is solid
Shape object is intercepted by filtration core, and purified water enters next link, and when Waste water concentrating to solid content reaches 50~70%, underflow is defeated
It send to belt dewaterer.
6. the treatment process of Desulphurization for Coal-fired Power Plant waste water reuse according to claim 3, it is characterised in that: the dosing
System is for adjusting pH value of waste water and total ion concentration, having the function of to be complexed and neutralizing.
7. the treatment process of Desulphurization for Coal-fired Power Plant waste water reuse according to claim 3, it is characterised in that: described efficient
Solid-liquid separator backwashing water box-shaped at back-purge system for cleaning filtration core, backwashing wastewater enters gypsum rotational flow station.
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| CN201810944770.XA CN109019966A (en) | 2018-08-19 | 2018-08-19 | A kind of processing unit and treatment process of Desulphurization for Coal-fired Power Plant waste water reuse |
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| CN201810944770.XA CN109019966A (en) | 2018-08-19 | 2018-08-19 | A kind of processing unit and treatment process of Desulphurization for Coal-fired Power Plant waste water reuse |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110703701A (en) * | 2019-09-02 | 2020-01-17 | 华电电力科学研究院有限公司 | Efficient data preprocessing method suitable for operating data of coal-fired power plant environment-friendly equipment |
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| CN208995263U (en) * | 2018-08-19 | 2019-06-18 | 华电电力科学研究院有限公司 | A kind of processing unit of Desulphurization for Coal-fired Power Plant waste water reuse |
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