CN108147589A - Low chlorine root water source circulating water cooling tower zero blowdown processing system and method - Google Patents
Low chlorine root water source circulating water cooling tower zero blowdown processing system and method Download PDFInfo
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- CN108147589A CN108147589A CN201810138596.XA CN201810138596A CN108147589A CN 108147589 A CN108147589 A CN 108147589A CN 201810138596 A CN201810138596 A CN 201810138596A CN 108147589 A CN108147589 A CN 108147589A
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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
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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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/007—Modular design
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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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
- C02F2303/00—Specific treatment goals
- C02F2303/22—Eliminating or preventing deposits, scale removal, scale prevention
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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
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
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Abstract
The invention discloses a kind of low chlorine root water source circulating water cooling tower zero blowdown processing system and methods, including former pond, flocculating agent storage tank, coagulating basin, milk of lime storage tank, flocculation aid storage tank, flocculation basin, clarifying basin, nanofiltration membrane component, desulfuration absorbing tower, circulating water cooling tower and circulating-water bypass flow filter, which can realize the superelevation concentration rate operation of low chlorine root source water and the zero blowdown of circulating water cooling tower.
Description
Technical field
The invention belongs to energy conservation and environmental protection fields, are related to a kind of low chlorine root water source circulating water cooling tower zero blowdown processing
System and method.
Background technology
With country《Economizing energy law》、《Law on Environmental Protection》And national standard《Water catchment ration first part：Thermal power generation》
(GB/T18916.1-2002) etc. the promulgation of regulations, thermoelectricity station-service, draining receive stringent limitation.Recirculating cooling water system is
The use of thermal power plant's maximum, drainage system, circulating cooling make-up water amount account for more than 70% open cycle cooling type thermal power plant fresh water amount,
Recirculating water blowdown water accounts for more than 80% power plant effluent total amount, and circulation is the key that thermal power plant's water-saving and emission-reducing.Due to by
The limitation of source quality and existing circulating cooling make-up water treatment process, relatively low, the recirculated water benefit of recirculated water concentration rate control
Water and sewerage are bigger than normal, and recirculating water blowdown water is difficult to outer by the consumption of the downstream users such as desulfurization, defeated coal, slagging-off.
At present, new-built unit condenser is substantially using stainless steel pipe, and predominantly 316,316L, 317L etc..According to
《Condenser of power plant and subsidiary engine cooler tube selection directive/guide》The related request of (DL/T 712-2010), when condenser tube is 316
During with 316L, recirculated cooling water Cl-＜ 1000mg/L；When condenser tube is 317 and 317L, recirculated water Cl-＜ 2000mg/L.
For these power plant, due to condenser tube materials quality height, Cl-Caused etching problem is not the limit that recirculated water concentration rate improves
Factor processed, hardness, SO4 2-Inorganic scaling problem caused by plasma is to limit the leading factor that recirculated water concentration rate improves.Mesh
Before, most of power plant reduce basicity, hardness in recirculated water using modes such as lime treatment, by-pass flow softenings, but still cannot be substantially
Improve recirculated water concentration rate.Therefore, it is necessary to explore suitable circulating cooling make-up water treatment process and recirculated water superelevation concentration rate
Control technology is run, to realize circulating water cooling tower zero blowdown.
Invention content
The shortcomings that it is an object of the invention to overcome the above-mentioned prior art, provides a kind of low chlorine root water source circulating
Water cooling tower zero blowdown processing system and method, the system and method can realize the superelevation concentration rate fortune of low chlorine root source water
The zero blowdown of row and circulating water cooling tower.
In order to achieve the above objectives, low chlorine root water source circulating water cooling tower zero blowdown processing system of the present invention
Including former pond, flocculating agent storage tank, coagulating basin, milk of lime storage tank, flocculation aid storage tank, flocculation basin, clarifying basin, nanofiltration membrane component,
Desulfuration absorbing tower, circulating water cooling tower and circulating-water bypass flow filter；
The outlet of former pond and the outlet of flocculating agent storage tank are connected with the entrance of coagulating basin, the outlet of coagulating basin, lime
The outlet of newborn storage tank and the outlet of flocculation aid storage tank are connected with the entrance of flocculation basin, the outlet of flocculation basin and entering for clarifying basin
Mouth is connected, and the supernatant outlet of clarifying basin is connected with the entrance of nanofiltration membrane component, the nanofiltration concentrated water outlet of nanofiltration membrane component
It is connected with the entrance of desulfuration absorbing tower, the nanofiltration production water out of nanofiltration membrane component is connected with the water inlet of circulating water cooling tower
Logical, the water outlet of circulating water cooling tower is connected with the entrance of circulating-water bypass flow filter, the outlet of circulating-water bypass flow filter
It is connected with the entrance of circulating water cooling tower, the outlet at bottom of clarifying basin is divided into two-way, wherein entering all the way with desulfuration absorbing tower
Mouth is connected, and another way is connected with the entrance of flocculation basin.
Clear water reserviors, sulfuric acid storage tank, clarified water pump, cartridge filter, antisludging agent medicine system and high-pressure pump are further included, wherein,
The supernatant outlet of clarifying basin and the outlet of sulfuric acid storage tank are connected with the entrance of clear water reserviors, the outlets of clear water reserviors through clarified water pump with
The entrance of cartridge filter is connected, the outlet of cartridge filter and the outlet of antisludging agent medicine system and the entrance phase of high-pressure pump
Connection, the outlet of high-pressure pump is connected with the entrance of nanofiltration membrane component.
The nanofiltration concentrated water outlet of nanofiltration membrane component is connected through nanofiltration concentrated water case with the entrance of desulfuration absorbing tower.
Circulating water quality stabilizer medicine system, nanofiltration water producing tank and circulating cooling make-up water pump are further included, nanofiltration membrane component
Nanofiltration produces the entrance that water out is pumped through nanofiltration water producing tank and circulating cooling make-up water and is connected, the outlet of circulating cooling make-up water pump and recirculated water
The outlet of water quality stabilizer medicine system is connected with the entrance of circulating water cooling tower.
The boosted pump in outlet of circulating water cooling tower is connected with the entrance of circulating-water bypass flow filter.
The outlet at bottom of clarifying basin is connected through sludge reflux pump with the entrance of flocculation basin.
The outlet at bottom of clarifying basin is connected through residual sludge pump with the entrance of desulfuration absorbing tower.
NF membrane in nanofiltration membrane component is charged membrane, and the aperture of the NF membrane is 1~2nm, molecular cut off range
It is 150~2000.
Circulating-water bypass flow filter is more medium filter, active carbon filter, fabric filter and gravity filter
In one or several combinations.
Low chlorine root water source circulating water cooling tower zero blowdown processing method of the present invention includes the following steps：
Low chlorine root source water is entered in former pond, the flocculating agent that water and the flocculating agent storage tank 6 of former pond output export into
Enter into coagulating basin, organic matter, suspended matter and colloidal state silicon coagulation in low chlorine root source water made by flocculating agent, then again with stone
Wadding is entered after the sludge confluence of the milk of lime of grey breast storage tank output, the anticoagulant of flocculation aid storage tank output and clarifying basin output
In the guide shell in solidifying bottom of pond portion, wherein, low chlorine root source water is mixed with milk of lime and flocculation aid, makes having in low chlorine root source water
Sludge, the clarified pond of water exported at the top of flocculation basin are formed on the bottom that machine object, suspended matter, hardness and colloidal state silicon are deposited to flocculation basin
Enter in nanofiltration membrane component after clarification and carry out nanofiltration, the nanofiltration concentrated water of nanofiltration membrane component output is entered in desulfuration absorbing tower, is received
The nanofiltration production water of filter membrane component output is entered in circulating water cooling tower, and the sludge of clarifying basin bottom output is divided into two-way, wherein,
It enters all the way in the guide shell of flocculation basin bottom, another way is entered as desulfurization absorbent in desulfuration absorbing tower；Recirculated water
The recirculated water of cooling tower output is entered after the filtering of circulating-water bypass flow filter in circulating water cooling tower.
The invention has the advantages that：
Low chlorine root water source circulating water cooling tower zero blowdown processing system and method for the present invention are specifically being grasped
When making, first pass through lime, coagulant and flocculation aid and coagulating treatment is carried out to chlorine root source water, to reduce the alkali in chlorine root source water
Degree, hardness, the content of suspended matter and organic matter, so as to remove the organic matter of circulating cooling make-up water precipitation process, suspended matter and colloidal state
Silicon, and alleviate organic matter organic contamination and microbial contamination caused by nanofiltration membrane component, by basicity in circulating cooling make-up water
And the removal of the fouling tendencies ion such as hardness can mitigate the inorganic scaling of nanofiltration membrane component.In addition, clarifying basin bottom is contained rich
The sludge of rich calcium source is drained into desulfuration absorbing tower as desulfurization absorbent, realizes the recycling of sludge.Clarifying basin output water into
Enter and detached into nanofiltration membrane component, wherein, SO in the nanofiltration production water isolated4 2-、Ca2+And Mg2+Fouling tendencies ion is waited to contain
Measure it is relatively low, nanofiltration production water fill into circulating water cooling tower, the present invention can under the premise of circulating water quality stabilizer is added, will
Recirculated water concentration rate is controlled at 25 times or more, realizes the superelevation concentration rate operation of recirculated water and the zero-emission of circulating water cooling tower
Dirt, wherein, SO in the nanofiltration concentrated water isolated4 2-、Ca2+And Mg2+The sum of mass concentration of ion accounts for 80% left side of total salinity
The right side fills into nanofiltration concentrated water in desulfuration absorbing tower, and the calcium sulfate of generation crystallizes precipitation, and finally with gypsum in desulfuration absorbing tower
Form realize utilization of wastewater resource.In addition, recirculated water is under superelevation concentration rate service condition, for prevent fouling and
The problem of sludgd deposition, the present invention are provided with circulating-water bypass flow filter, recirculated water are avoided to go out by circulating-water bypass flow filter
The problem of existing fouling and sludgd deposition, simple in structure, easy to operate, at low cost, whole system operational safety high stability.
Further, the NF membrane in nanofiltration membrane component is charged membrane, and the aperture of the NF membrane is 1~2nm, retains molecule
Amount ranging from 150~2000, the NF membrane are more than 90% to bivalent ions removal rate, do not retain Na substantially+And Cl-Etc. monovalencies
Ion, NF membrane can realize that monovalent ion is detached with bivalent ions, make the SO in nanofiltration production water4 2-、Ca2+And Mg2+Deng knot
Dirt ion concentration is very low, therefore produces water as circulating cooling make-up water using nanofiltration, in the premise for adding circulating water quality stabilizer
Under, the control of recirculated water concentration rate is at 25 times or more, it can be achieved that recirculated water obtains the operation of superelevation concentration rate and circulating water cooling tower
Zero blowdown.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Wherein, 1 be former pond, 2 be coagulating basin, 3 be flocculation basin, 4 be clarifying basin, 5 be clear water reserviors, 6 be flocculating agent storage tank,
7 it is milk of lime storage tank, 8 be flocculation aid storage tank, 9 be sulfuric acid storage tank, 10 be sludge reflux pump, 11 be residual sludge pump, 12 is clear
Water pump, 13 be cartridge filter, 14 be antisludging agent medicine system, 15 be high-pressure pump, 16 be nanofiltration membrane component, 17 be nanofiltration production water
Case, 18 be circulating cooling make-up water pump, 19 be nanofiltration concentrated water case, 20 be desulfuration absorbing tower, 21 be circulating water quality stabilizer dosing system
System, 22 be circulating water cooling tower, 23 be elevator pump, 24 be circulating-water bypass flow filter.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings：
With reference to figure 1, low chlorine root water source circulating water cooling tower zero blowdown processing system of the present invention includes original
Pond 1, flocculating agent storage tank 6, coagulating basin 2, milk of lime storage tank 7, flocculation aid storage tank 8, flocculation basin 3, clarifying basin 4, nanofiltration membrane component
16th, desulfuration absorbing tower 20, circulating water cooling tower 22 and circulating-water bypass flow filter 24；The outlet of former pond 1 and flocculating agent storage tank 6
Outlet be connected with the entrance of coagulating basin 2, outlet, the outlet of milk of lime storage tank 7 and the going out for flocculation aid storage tank 8 of coagulating basin 2
Entrance of the mouth with flocculation basin 3 is connected, and the outlet of flocculation basin 3 is connected with the entrance of clarifying basin 4, the supernatant of clarifying basin 4
Outlet is connected with the entrance of nanofiltration membrane component 16, the nanofiltration concentrated water outlet of nanofiltration membrane component 16 and the entrance of desulfuration absorbing tower 20
It is connected, the nanofiltration production water out of nanofiltration membrane component 16 is connected with the water inlet of circulating water cooling tower 22, circulating water cooling tower
22 water outlet is connected with the entrance of circulating-water bypass flow filter 24, the outlet of circulating-water bypass flow filter 24 and recirculated water cooling
But the entrance of tower 22 is connected, and the outlet at bottom of clarifying basin 4 is divided into two-way, wherein the entrance with desulfuration absorbing tower 20 is connected all the way
Logical, another way is connected with the entrance of flocculation basin 3.
The invention also includes clear water reserviors 5, sulfuric acid storage tank 9, clarified water pump 12, cartridge filter 13, antisludging agent medicine systems 14
And high-pressure pump 15, wherein, the supernatant outlet of clarifying basin 4 and the outlet of sulfuric acid storage tank 9 are connected with the entrance of clear water reserviors 5, clearly
The outlet in pond 5 is connected through clarified water pump 12 with the entrance of cartridge filter 13, and the outlet of cartridge filter 13 and antisludging agent add
The outlet of medicine system 14 is connected with the entrance of high-pressure pump 15, and the outlet of high-pressure pump 15 is connected with the entrance of nanofiltration membrane component 16
It is logical；The nanofiltration concentrated water outlet of nanofiltration membrane component 16 is connected through nanofiltration concentrated water case 19 with the entrance of desulfuration absorbing tower 20.
The invention also includes circulating water quality stabilizer medicine system 21, nanofiltration water producing tank 17 and circulating cooling make-up waters to pump 18,
Entrance of the nanofiltration production water out of nanofiltration membrane component 16 through nanofiltration water producing tank 17 and circulating cooling make-up water pump 18 is connected, and recirculated water is mended
The outlet of water pump 18 and the outlet of circulating water quality stabilizer medicine system 21 are connected with the entrance of circulating water cooling tower 22.
The boosted pump 23 in outlet of circulating water cooling tower 22 is connected with the entrance of circulating-water bypass flow filter 24；Clarifying basin
4 outlet at bottom is connected through sludge reflux pump 10 with the entrance of flocculation basin 3；The outlet at bottom of clarifying basin 4 is through residual sludge pump
11 are connected with the entrance of desulfuration absorbing tower 20.
NF membrane in nanofiltration membrane component 16 is charged membrane, and the aperture of the NF membrane is 1~2nm, molecular cut off model
Enclose is 150~2000；Circulating-water bypass flow filter 24 is more medium filter, active carbon filter, fabric filter and gravity
One or several combinations in formula filter.
Low chlorine root water source circulating water cooling tower zero blowdown processing method of the present invention includes the following steps：
Low chlorine root source water is entered in former pond 1, the flocculating agent that the water that former pond 1 exports is exported with flocculating agent storage tank 6
It enters in coagulating basin 2, organic matter, suspended matter and colloidal state silicon coagulation in low chlorine root source water, Ran Houzai is made by flocculating agent
After the sludge confluence that the anticoagulant and clarifying basin 4 that milk of lime, the flocculation aid storage tank 8 exported with milk of lime storage tank 7 exports export
It enters in the guide shell of 3 bottom of flocculation basin, wherein, low chlorine root source water is mixed with milk of lime and flocculation aid, makes low chlorine root water
Sludge is formed on the bottom that organic matter, suspended matter, hardness and colloidal state silicon in the water of source are deposited to flocculation basin 3, and 3 top of flocculation basin exports
The clarified pond 4 of water clarify after enter in nanofiltration membrane component 16 and carry out nanofiltration, the nanofiltration concentrated water that nanofiltration membrane component 16 exports enters
Into desulfuration absorbing tower 20, the nanofiltration production water that nanofiltration membrane component 16 exports is entered in circulating water cooling tower 22,4 bottom of clarifying basin
The sludge of output is divided into two-way, wherein, it enters all the way in the guide shell of 3 bottom of flocculation basin, another way is as desulfurization absorbent
It enters in desulfuration absorbing tower 20；The recirculated water that circulating water cooling tower 22 exports enters after the filtering of circulating-water bypass flow filter 24
Into circulating water cooling tower 22.
In addition, the water that clarifying basin 4 exports removed after clear water reserviors 5 and clarified water pump 12 pressurize using cartridge filter 13 it is micro-
Small suspended impurity, then again with entering NF membrane group through high-pressure pump 15 after the antisludging agent confluence of the output of antisludging agent medicine system 14
In part 16, the nanofiltration production water that nanofiltration membrane component 16 exports is supplemented to through nanofiltration water producing tank 17 in circulating water cooling tower 22, NF membrane
The nanofiltration concentrated water that component 16 exports fills into desulfuration absorbing tower 20 through nanofiltration concentrated water case 19.
For low chlorine root water source and condenser tube materials are using the power plant of the stainless steel pipes such as 316,317, SO4 2-、Ca2+、Mg2 +Scale problems caused by plasma are to limit the key factor that recirculated water concentration rate improves, and NF membrane is by one, two in water inlet
Valency ion isolation, dilute side SO4 2-、Ca2+、Mg2+Wait fouling tendencies ion concentration very low.It is mended using nanofiltration production water as recirculated water
Water, recirculated water concentration rate are controlled at 25 times or more, and risk of the circulation without fouling and corrosion can realize recirculated water
Superelevation concentration rate is run and the zero blowdown of cooling tower.SO in nanofiltration concentrated water4 2-、Ca2+、Mg2+Divalent ions mass concentration is waited to account for
More than 80% salt content according to the characteristics of nanofiltration concentrated water water quality, is filled into desulfuration absorbing tower 20, the calcium sulfate of generation exists
Crystallization is precipitated in desulfuration absorbing tower 20, and finally realizes utilization of wastewater resource as gypsum.
After recirculated water concentration rate is substantially improved, the suspension content in recirculated water is higher, in order to prevent circulation
Sludgd deposition occurs, needs to set circulating-water bypass flow filter 24, the cycle crystal elevator pump 23 that circulating water cooling tower 22 exports
Then boosting is entered after the filtering of circulating-water bypass flow filter 24 in circulating water cooling tower 22 again.
The above is only the citing of the implementation steps of the present invention, it is noted that for the ordinary skill of the art
For personnel, without departing from the technical principles of the invention, several improvement and modification can also be made, these improve and become
Type also should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of low chlorine root water source circulating water cooling tower zero blowdown processing system, which is characterized in that including former pond
(1), flocculating agent storage tank (6), coagulating basin (2), milk of lime storage tank (7), flocculation aid storage tank (8), flocculation basin (3), clarifying basin (4),
Nanofiltration membrane component (16), desulfuration absorbing tower (20), circulating water cooling tower (22) and circulating-water bypass flow filter (24)；
The outlet of former pond (1) and the outlet of flocculating agent storage tank (6) are connected with the entrance of coagulating basin (2), and coagulating basin (2) go out
Mouth, the entrance of the outlet of milk of lime storage tank (7) and the outlet of flocculation aid storage tank (8) with flocculation basin (3) are connected, flocculation basin
(3) outlet is connected with the entrance of clarifying basin (4), the supernatant outlet of clarifying basin (4) and the entrance of nanofiltration membrane component (16)
It is connected, the nanofiltration concentrated water outlet of nanofiltration membrane component (16) is connected with the entrance of desulfuration absorbing tower (20), nanofiltration membrane component
(16) nanofiltration production water out be connected with the water inlet of circulating water cooling tower (22), the water outlet of circulating water cooling tower (22) and
The entrance of circulating-water bypass flow filter (24) is connected, outlet and the circulating water cooling tower (22) of circulating-water bypass flow filter (24)
Entrance be connected, the outlet at bottom of clarifying basin (4) is divided into two-way, wherein the entrance with desulfuration absorbing tower (20) is connected all the way
Logical, another way is connected with the entrance of flocculation basin (3).
2. low chlorine root water source circulating water cooling tower zero blowdown processing system according to claim 1, feature exist
In, further include clear water reserviors (5), sulfuric acid storage tank (9), clarified water pump (12), cartridge filter (13), antisludging agent medicine system (14) and
High-pressure pump (15), wherein, the supernatant outlet of clarifying basin (4) and the outlet of sulfuric acid storage tank (9) are connected with the entrance of clear water reserviors (5)
Logical, the outlet of clear water reserviors (5) is connected through clarified water pump (12) with the entrance of cartridge filter (13), and cartridge filter (13) go out
The outlet of mouth and antisludging agent medicine system (14) is connected with the entrance of high-pressure pump (15), the outlet of high-pressure pump (15) and NF membrane
The entrance of component (16) is connected.
3. low chlorine root water source circulating water cooling tower zero blowdown processing system according to claim 1, feature exist
In the nanofiltration concentrated water outlet of nanofiltration membrane component (16) is connected through nanofiltration concentrated water case (19) with the entrance of desulfuration absorbing tower (20).
4. low chlorine root water source circulating water cooling tower zero blowdown processing system according to claim 1, feature exist
In, it further includes circulating water quality stabilizer medicine system (21), nanofiltration water producing tank (17) and circulating cooling make-up water and pumps (18), NF membrane
Entrance of the nanofiltration production water out through nanofiltration water producing tank (17) and circulating cooling make-up water pump (18) of component (16) is connected, and recirculated water is mended
The outlet of water pump (18) and the outlet of circulating water quality stabilizer medicine system (21) and the entrance phase of circulating water cooling tower (22)
Connection.
5. low chlorine root water source circulating water cooling tower zero blowdown processing system according to claim 1, feature exist
In the boosted pump (23) in outlet of circulating water cooling tower (22) is connected with the entrance of circulating-water bypass flow filter (24).
6. low chlorine root water source circulating water cooling tower zero blowdown processing system according to claim 1, feature exist
In the outlet at bottom of clarifying basin (4) is connected through sludge reflux pump (10) with the entrance of flocculation basin (3).
7. low chlorine root water source circulating water cooling tower zero blowdown processing system according to claim 1, feature exist
In the outlet at bottom of clarifying basin (4) is connected through residual sludge pump (11) with the entrance of desulfuration absorbing tower (20).
8. low chlorine root water source circulating water cooling tower zero blowdown processing system according to claim 1, feature exist
In the NF membrane in nanofiltration membrane component (16) is charged membrane, and the aperture of the NF membrane is 1~2nm, and molecular cut off is ranging from
150~2000.
9. low chlorine root water source circulating water cooling tower zero blowdown processing system according to claim 1, feature exist
In circulating-water bypass flow filter (24) is in more medium filter, active carbon filter, fabric filter and gravity filter
One or several combinations.
10. a kind of low chlorine root water source circulating water cooling tower zero blowdown processing method, which is characterized in that based on claim
Low chlorine root water source circulating water cooling tower zero blowdown processing system described in 1, includes the following steps：
Low chlorine root source water is entered in former pond (1), the water of former pond (1) output and the cohesion of flocculating agent storage tank (6) output
Agent is entered in coagulating basin (2), organic matter, suspended matter and colloidal state silicon coagulation in low chlorine root source water is made by flocculating agent, so
It is exported again with the milk of lime of milk of lime storage tank (7) output, the anticoagulant of flocculation aid storage tank (8) output and clarifying basin (4) afterwards
It is entered in the guide shell of flocculation basin (3) bottom after sludge confluence, wherein, low chlorine root source water is mixed with milk of lime and flocculation aid
It closes, the bottom that the organic matter in low chlorine root source water, suspended matter, hardness and colloidal state silicon are deposited to flocculation basin (3) is made to form sludge,
Enter after the clarified pond of water (4) clarification exported at the top of flocculation basin (3) and nanofiltration, nanofiltration membrane component are carried out in nanofiltration membrane component (16)
(16) the nanofiltration concentrated water of output is entered in desulfuration absorbing tower (20), and the nanofiltration production water of nanofiltration membrane component (16) output, which enters, to follow
In ring water cooling tower (22), the sludge of clarifying basin (4) bottom output is divided into two-way, wherein, flocculation basin (3) bottom is entered all the way
Guide shell in, another way is entered as desulfurization absorbent in desulfuration absorbing tower (20)；Circulating water cooling tower (22) output
Recirculated water is entered after circulating-water bypass flow filter (24) filtering in circulating water cooling tower (22).
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN111732234A (en) * | 2020-07-21 | 2020-10-02 | 西安西热水务环保有限公司 | Treatment system and method for using high-suspended substance mine water as circulating water supplement water of power plant |
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| CN111392984A (en) * | 2020-04-21 | 2020-07-10 | 西安西热水务环保有限公司 | Advanced treatment system and method for supplementing water by using urban reclaimed water as circulating water of power plant |
| CN111732234A (en) * | 2020-07-21 | 2020-10-02 | 西安西热水务环保有限公司 | Treatment system and method for using high-suspended substance mine water as circulating water supplement water of power plant |
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