CN205676308U - Desulfurizing waste water processing device - Google Patents
Desulfurizing waste water processing device Download PDFInfo
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- CN205676308U CN205676308U CN201620635350.XU CN201620635350U CN205676308U CN 205676308 U CN205676308 U CN 205676308U CN 201620635350 U CN201620635350 U CN 201620635350U CN 205676308 U CN205676308 U CN 205676308U
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- evaporation room
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Abstract
This utility model discloses and provides that a kind of added amount of chemical is few, operating cost is cheap, stable water outlet qualified discharge and can accomplish effluent reuse thus save the desulfurizing waste water processing device of water resource.This utility model includes coagulation pretreatment device, low energy consumption MVR vaporizer (1) and triple effect concentrated solution forced circulation crystallizer (23), described coagulation pretreatment device, described low energy consumption MVR vaporizer (1) and described triple effect concentrated solution forced circulation crystallizer (23) are sequentially connected and connect, and described coagulation pretreatment device is connected with outside waste water water tank.This utility model is applicable to power plant desulfurization field of waste water treatment.
Description
Technical field
This utility model relates to a kind of desulfurizing waste water processing device.
Background technology
The wastewater source that power-plant flue gas wet desulphurization limestone/gypsum method process produces is in the discharge water on absorption tower.In order to
Maintain the balance of desulfurizer serum recycle system material, prevent soluble fraction i.e. cl concn in flue gas from exceeding setting and guarantee
Gypsum quality, it is necessary to discharge a certain amount of waste water from system, waste water is essentially from gypsum dehydration and purging system.Waste water contains
Some impurity mainly includes float, oversaturated sulphite, sulfate and heavy metal, is the most much national environmental protection mark
Standard requires the strict first kind pollutant controlled.Prior art is mainly simply located by the method for physics and chemistry
Reason, needs to add a large amount of medicament to remove the pollutant such as the float inside waste water and heavy metal, and dosage is big, technique chain length,
Operating cost is high；Again since it is desired that feeding lime, medicament configures and adds process complexity, and the amount of labour of workman is big, the dirt of generation
Mud amount is relatively big, and sludge treatment is costly；Again because the defect of technique itself, effluent quality is unstable, can reach three grades of rows reluctantly
Put standard, it is impossible to reach waste water recycling and the purpose of using water wisely resource.And owing to the salt of water outlet is the most effectively gone
Remove, therefore limit the possibility of waste water recycling.
Utility model content
Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, it is provided that a kind of added amount of chemical
Less, operating cost is cheap, stable water outlet qualified discharge and can accomplish effluent reuse thus save the desulfurization wastewater of water resource
Processing means.
This utility model be the technical scheme is that a kind of desulfurizing waste water processing device, and it includes that coagulation pretreatment fills
Put, low energy consumption MVR vaporizer and triple effect concentrated solution forced circulation crystallizer, described coagulation pretreatment device, described low energy consumption
MVR vaporizer and described triple effect concentrated solution forced circulation crystallizer are sequentially connected and connect, and described coagulation pretreatment device is with outside
Waste water water tank is connected.
Described coagulation pretreatment device includes being sequentially connected one-level stirring coagulation case, one-level settling tank, the two grades of stirrings connect
Coagulation case, two-stage precipitation case and intermediate reaction case, described one-level stirring coagulation case with outside waste water water tank be connected, described in
Between the outlet of reaction chamber be connected with the water inlet of described low energy consumption MVR vaporizer, described coagulation pretreatment device also includes
Dewaterer, the charging aperture of described dewaterer respectively with the discharging opening of described one-level settling tank and the discharging of described two-stage precipitation case
Mouth is connected.
Described triple effect concentrated solution forced circulation crystallizer includes the first effect heating evaporation room, the first effect separation chamber, the second effect
Heating evaporation room, the second effect separation chamber, triple effect heating evaporation room, triple effect separation chamber, final condenser, final Crystallization Separation
Machine and distillation water pot, the water inlet of described first effect heating evaporation room is connected with the leakage fluid dram of described MVR vaporizer, described
The outlet of the first effect heating evaporation room is connected with the water inlet of described first effect separation chamber, and described first effect separation chamber goes out
The mouth of a river is connected with the water inlet of described second effect heating evaporation room, the outlet and described the of described second effect heating evaporation room
The water inlet of two effect separation chambers is connected, the outlet of described second effect separation chamber and the water inlet of described triple effect heating evaporation room
Mouthful being connected, the described outlet of triple effect heating evaporation room is connected with the water inlet of described triple effect separation chamber, and described the
The discharging opening of triple effect separation chamber is connected with the charging aperture of described final Crystallization Separation machine, entering of described first effect heating evaporation room
QI KOU is connected with outside saturated vapor source, the gas outlet of described first effect heating evaporation room, described second effect heating evaporation room
Gas outlet and the gas outlet air inlet with described final condenser respectively of described triple effect heating evaporation room be connected, institute
The gas outlet stating final condenser connects outer exhaust duct group 22, and described second effect heating evaporation room, the heating of described triple effect are steamed
Send out room and described final condenser be provided with distilled water discharging mouth and respectively water inlet with described distillation water pot be connected.
Described first effect separation chamber, described second effect separation chamber and described triple effect separation chamber are provided with dope backflow
Mouth and venthole, the dope refluxing opening of described first effect separation chamber and the water inlet of described first effect heating evaporation room are connected
Connecing, the dope refluxing opening of described second effect separation chamber is connected with the water inlet of described second effect heating evaporation room, and the described 3rd
The dope refluxing opening of effect separation chamber is connected with the water inlet of described triple effect heating evaporation room, and described first effect separation chamber goes out
Pore is connected with the air inlet of described second effect heating evaporation room, the venthole of described second effect separation chamber and described triple effect
The air inlet of heating evaporation room is connected, and the venthole of described triple effect separation chamber is connected with the air inlet of described final condenser
Connect.
Described desulfurizing waste water processing device also includes heat exchanger group and condensate water pot, the water inlet of described condensate water pot
It is connected with the distilled water discharging mouth of described first effect heating evaporation room, the outlet of described condensate water pot and described heat exchanger
The condensed water water inlet of group is connected, and the gas outlet of described condensate water pot is connected with the air inlet of described first effect heating evaporation room
Connecing, the outlet of described distillation water pot is connected with the distilled water water inlet of described heat exchanger group, described heat exchanger group
Distilled water outlet tank up to standard with outside is connected, and described heat exchanger group is additionally provided with strong brine import and dense salt
Water out, described strong brine import is connected with the strong brine floss hole of described low energy consumption MVR vaporizer, described brine outlet
It is connected with the strong brine recovery port of described low energy consumption MVR vaporizer.
The beneficial effects of the utility model are: in this utility model, owing to have employed coagulation pretreatment device, low energy consumption
Desulfurization wastewater is successively repeatedly evaporated and concentration by MVR vaporizer and triple effect concentrated solution forced circulation crystallizer,
So that desulfurization wastewater can after treatment can qualified discharge even zero-emission, simultaneously relative to conventional technique, this reality
More terse by novel technology chain journey, medicine throwing amount less, operating cost is cheaper, additionally it is possible to recycle-water resource.
Accompanying drawing explanation
Fig. 1 is overall structure connection diagram of the present utility model；
Fig. 2 is the structure connection diagram of triple effect concentrated solution forced circulation crystallizer of the present utility model.
Detailed description of the invention
As shown in Figure 1 and Figure 2, a kind of desulfurizing waste water processing device, it include coagulation pretreatment device, MVR vaporizer 1 with
And triple effect concentrated solution forced circulation crystallizer 23, described coagulation pretreatment device, described MVR vaporizer 1 and described triple effect are dense
Contracting liquid forced circulation crystallizer 23 is sequentially connected and connects, and described coagulation pretreatment device is connected with outside waste water water tank.
Described coagulation pretreatment device includes coagulation pretreatment device, MVR vaporizer 1 and triple effect concentrated solution forced circulation
Crystallizer 23, described coagulation pretreatment device, described MVR vaporizer 1 and described triple effect concentrated solution forced circulation crystallizer 23
Being sequentially connected and connect, described coagulation pretreatment device is connected with outside waste water water tank.
Described coagulation pretreatment device includes being sequentially connected the one-level stirring coagulation case 2 that connects, one-level settling tank 3, two grades stirs
Mixing coagulation case 4, two-stage precipitation case 6 and intermediate reaction case 7, described one-level stirring coagulation case 2 is connected with outside waste water water tank,
The outlet of described intermediate reaction case 7 is connected with the water inlet of described MVR vaporizer 1, and described coagulation pretreatment device also wraps
Include dewaterer 8, the charging aperture of described dewaterer 8 respectively with the discharging opening of described one-level settling tank 3 and described two-stage precipitation case 6
Discharging opening be connected.
Described triple effect concentrated solution forced circulation crystallizer 23 include the first effect heating evaporation room 9, first imitate separation chamber 10, the
Separation chamber 12, triple effect heating evaporation room 13, triple effect separation chamber 14, final condenser are imitated in two effect heating evaporation rooms 11, second
15, final Crystallization Separation machine 16 and distillation water pot 17, the water inlet of described first effect heating evaporation room 9 evaporates with described MVR
The leakage fluid dram of device 1 is connected, the outlet of described first effect heating evaporation room 9 and the described first water inlet phase imitating separation chamber 10
Connecting, the outlet of described first effect separation chamber 10 is connected with the described second water inlet imitating heating evaporation room 11, and described the
The outlet of two effect heating evaporation rooms 11 is connected with the water inlet of described second effect separation chamber 12, described second effect separation chamber 12
Outlet be connected with the water inlet of described triple effect heating evaporation room 13, the outlet of described triple effect heating evaporation room 13
Being connected with the water inlet of described triple effect separation chamber 14, the discharging opening of described triple effect separation chamber 14 divides with described final crystallization
Disembark 16 charging aperture be connected, described first effect heating evaporation room 9 air inlet with outside saturated vapor source 18 be connected, institute
State the gas outlet of the first effect heating evaporation room 9, the gas outlet of described second effect heating evaporation room 11 and the heating of described triple effect
The gas outlet of vaporization chamber 13 air inlet with described final condenser 15 respectively is connected, the gas outlet of described final condenser 15
Connect outer exhaust duct group 22, described second effect heating evaporation room 11, described triple effect heating evaporation room 13 and described finally
Condenser 15 be provided with distilled water discharging mouth and respectively water inlet with described distillation water pot 17 be connected.
Described first effect separation chamber 10, described second effect separation chamber 12 and described triple effect separation chamber 14 are provided with dense
Liquid refluxing opening and venthole, the described first dope refluxing opening of effect separation chamber 10 and entering of described first effect heating evaporation room 9
The mouth of a river is connected, and the dope refluxing opening of described second effect separation chamber 12 is connected with the water inlet of described second effect heating evaporation room 11
Connecing, the dope refluxing opening of described triple effect separation chamber 14 is connected with the water inlet of described triple effect heating evaporation room 13, described
The venthole of the first effect separation chamber 10 is connected with the air inlet of described second effect heating evaporation room 11, described second effect separation chamber
The venthole of 12 is connected with the air inlet of described triple effect heating evaporation room 13, the venthole of described triple effect separation chamber 14 with
The air inlet of described final condenser 15 is connected.
Described desulfurizing waste water processing device also includes heat exchanger group 19 and condensate water pot 20, described condensate water pot 20
Water inlet is connected with the distilled water discharging mouth of described first effect heating evaporation room 9, the outlet of described condensate water pot 20 and institute
The condensed water water inlet stating heat exchanger group 19 is connected, the gas outlet of described condensate water pot 20 and described first effect heating evaporation
The air inlet of room 9 is connected, and the outlet of described distillation water pot 17 is connected with the distilled water water inlet of described heat exchanger group 19
Connecing, the distilled water outlet tank up to standard with outside 21 of described heat exchanger group 19 is connected, in described heat exchanger group 19
It is additionally provided with the strong brine floss hole of strong brine import and brine outlet, described strong brine import and described MVR vaporizer 1
Being connected, described brine outlet is connected with the strong brine recovery port of described MVR vaporizer 1.
A kind of desulfuration waste water treatment process realized by above-mentioned desulfurizing waste water processing device, it comprises the following steps:
A. desulfurization wastewater is carried out pretreatment:
A. desulfurization wastewater is pumped to described one-level stirring coagulation case 2, adds in described one-level stirring coagulation case 2 simultaneously
Polyacrylamide (PAM) also stirs, and makes polyacrylamide (PAM) produce flocculation reaction with the float in waste water thus conglomeration change
Greatly；
B. precipitate and separate is carried out in the waste water reaction mixture produced in step a being delivered to described one-level settling tank 3, precipitation
The supernatant obtained after separation delivers to described two grades of stirring coagulation casees 4, and after separation, the solid sediment of gained delivers to described dehydration
Machine 8 carries out being dehydrated to water content less than 60%, then processes making outward transport after the solid sediment pack after dehydration；
C. add sodium carbonate and make it be sufficiently mixed with waste water in tank in described secondary response tank 4, add sodium carbonate
Main purpose is to remove the calcium ions and magnesium ions dissolved in waste water, by adding soda ash solution, generates calcium carbonate, magnesium carbonate precipitation, from
And reach to settle calcium ions and magnesium ions purpose；
In described two grades of stirring coagulation casees 4, throw in aluminium polychlorid (PAC) and polyacrylamide (PAM) the most respectively, enter
Fine suspension and colloidal substance in one step and waste water produce coagulating, and by adsorption bridging effect, conglomeration becomes big and easy
In precipitation；
E. precipitation point is carried out in the coagulant liquid in two-stage coagulation tank described in step d 5 is delivered to described two-stage precipitation case 6
From the bottom of, the solid such as calcium carbonate, magnesium carbonate and partial suspended solid precipitation to settling tank, the supernatant conveying of gained after separation
To described intermediate reaction case 7, after separation, the solid sediment of gained is delivered to described dewaterer 8 and carries out dehydration and separate, after dehydration
Solid aqueous rate process less than outward transport after 60%；
F. in described intermediate reaction case 7, dilute hydrochloric acid is thrown in so that the pH value of the waste water in described intermediate reaction case 7 reduces
To between 5.5 and 6.5, eliminate the impact of remaining carbonate in waste water, prevent magnesium bicarbonate from turning during evaporation heating
Chemical conversion carbonic acid magne-scale,
B. it is that the waste water between 5.5 and 6.5 is delivered to described MVR vaporizer 1, now by the pH value of last for step A gained
Waste water refluxes after first passing through described heat exchanger group 19 and carrying out heat exchange with the distilled water flowing through described heat exchanger group 19 again
Decompose to described MVR vaporizer 1；Waste water is decomposed into on-condensible gas, distilled water and concentrated solution by described MVR vaporizer 1,
Wherein on-condensible gas is emitted into outside by pipe group, and outer row to described MVR vaporizer 1 internal distillation water pot collected by distilled water；
C. the concentrated solution produced in step B is carried out triple effect forced circulation crystallization treatment:
In the concentrated solution that the most described MVR vaporizer 1 is produced is delivered to described heat exchanger group 19 and with from described cold
The condensed water discharged in solidifying water pot 20 carries out heat exchange, and after completing, concentrated solution is transported to described triple effect concentrated solution forced circulation knot
Brilliant device 23；
H. carry out heating evaporation in completing that the concentrated solution of heat exchange is defeated and being sent to described first effect heating evaporation room 9 to decomposite
Secondary concentration liquid and water vapour, wherein water vapour is transported to described final condenser 15 and carries out condensation process, secondary concentration liquid
Being transported to described first effect separation chamber 10 separate, in separation process, part secondary concentration liquid is back to described first effect
Proceed heating evaporation, another part secondary concentration liquid and the effect steam decomposited in heating evaporation room 9 then to distinguish
It is transported to described second effect heating evaporation room 11 carry out heating evaporation and decomposite three concentrated solutions and imitate steam with two, wherein two
Effect water vapour is transported to described final condenser 15 and carries out condensation process, and three concentrated solutions are transported to described second effect and separate
Room 12 separates, and in separation process, portion's concentrated solution in three times is back to described second effect heating evaporation room 11 and proceeds to add
Thermal evaporation；
I. three concentrated solutions of the another part in step h and two effect steam are transported to described triple effect the most respectively and add
Carrying out heating evaporation in thermal evaporation room 13, thus decomposite four concentrated solutions and triple effect water vapour, wherein triple effect steam is defeated
Delivering to described final condenser 15 and carry out condensation process, four concentrated solutions are transported to described triple effect separation chamber 14 and crystallize
Separating, isolate crystal salt and four concentrated solutions of residue in separation process, wherein four concentrated solutions of residue are back to described the
Triple effect heating evaporation room 13 proceeds heating evaporation, and the final steam in described triple effect separation chamber 14 is transported to described
Final condenser 15 carries out condensation process, and crystal salt carries out last water salinity in being sent to described final Crystallization Separation machine 16
From, and finally sub-argument goes out final crystal salt and five concentrated solutions, wherein five concentrated solutions are back to the heating steaming of described triple effect
Send out room 13 and proceed heating evaporation, and final crystal salt is transported outward process.Described first heating evaporation room 9, described second add
The distilled water produced in thermal evaporation room 11 and described 3rd heating evaporation room 13 is transported to described distillation water pot 17 respectively, then
It is delivered to outside tank up to standard 21 through described heat exchanger group 19.
Step C iterative cycles is carried out, and to reach waste water is carried out separating treatment thoroughly, makes steam discharge reach simultaneously
Mark.
In this specific embodiment, described MVR vaporizer is mechanical steam recompression technology vaporizer.
This utility model is applicable to power plant desulfurization field of waste water treatment.
Claims (5)
1. kind of desulfurizing waste water processing device, it is characterised in that: it include coagulation pretreatment device, low energy consumption MVR vaporizer (1) with
And triple effect concentrated solution forced circulation crystallizer (23), described coagulation pretreatment device, described low energy consumption MVR vaporizer (1) and
Described triple effect concentrated solution forced circulation crystallizer (23) is sequentially connected and connects, described coagulation pretreatment device and outside waste water water tank phase
Connect.
Desulfurizing waste water processing device the most according to claim 1, it is characterised in that: described coagulation pretreatment device includes depending on
Secondary be connected one-level stirring coagulation case (2), one-level settling tank (3), two grades stirring coagulation case (4), two-stage precipitation case (6) and
Intermediate reaction case (7), described one-level stirring coagulation case (2) is connected with outside waste water water tank, going out of described intermediate reaction case (7)
The mouth of a river is connected with the water inlet of described low energy consumption MVR vaporizer (1), and described coagulation pretreatment device also includes dewaterer (8),
The charging aperture of described dewaterer (8) respectively with the discharging opening of described one-level settling tank (3) and going out of described two-stage precipitation case (6)
Material mouth is connected.
Desulfurizing waste water processing device the most according to claim 1, it is characterised in that: described triple effect concentrated solution forced circulation is tied
Brilliant device (23) includes the first effect heating evaporation room (9), the first effect separation chamber (10), the second effect heating evaporation room (11), the second effect
Separation chamber (12), triple effect heating evaporation room (13), triple effect separation chamber (14), final condenser (15), final Crystallization Separation
Machine (16) and distillation water pot (17), the water inlet of described first effect heating evaporation room (9) and the row of described MVR vaporizer (1)
Liquid mouth is connected, and the outlet of described first effect heating evaporation room (9) is connected with the water inlet of described first effect separation chamber (10)
Connecing, the outlet of described first effect separation chamber (10) is connected with the water inlet of described second effect heating evaporation room (11), described
The outlet of the second effect heating evaporation room (11) is connected with the water inlet of described second effect separation chamber (12), described second effect point
It is connected with the water inlet of described triple effect heating evaporation room (13) from the outlet of room (12), described triple effect heating evaporation room
(13) outlet is connected with the water inlet of described triple effect separation chamber (14), the discharging opening of described triple effect separation chamber (14)
Being connected with the charging aperture of described final Crystallization Separation machine (16), the air inlet of described first effect heating evaporation room (9) is with outside
Saturated vapor source (18) is connected, the gas outlet of described first effect heating evaporation room (9), described second effect heating evaporation room (11)
Gas outlet and described triple effect heating evaporation room (13) gas outlet respectively with the air inlet of described final condenser (15)
Being connected, the gas outlet of described final condenser (15) connects outer exhaust duct group (22), described second effect heating evaporation room
(11), described triple effect heating evaporation room (13) and described final condenser (15) are provided with distilled water discharging mouth difference
It is connected with the water inlet of described distillation water pot (17).
Desulfurizing waste water processing device the most according to claim 3, it is characterised in that: described first effect separation chamber (10), institute
State the second effect separation chamber (12) and described triple effect separation chamber (14) is provided with dope refluxing opening and venthole, described
The dope refluxing opening of one effect separation chamber (10) is connected with the water inlet of described first effect heating evaporation room (9), described second effect
The dope refluxing opening of separation chamber (12) is connected with the water inlet of described second effect heating evaporation room (11), and described triple effect separates
The dope refluxing opening of room (14) is connected with the water inlet of described triple effect heating evaporation room (13), described first effect separation chamber
(10) venthole is connected with the air inlet of described second effect heating evaporation room (11), going out of described second effect separation chamber (12)
Pore is connected with the air inlet of described triple effect heating evaporation room (13), the venthole of described triple effect separation chamber (14) and institute
The air inlet stating final condenser (15) is connected.
Desulfurizing waste water processing device the most according to claim 3, it is characterised in that: described desulfurizing waste water processing device also wraps
Include heat exchanger group (19) and condensate water pot (20), the water inlet of described condensate water pot (20) and described first effect heating evaporation
The distilled water discharging mouth of room (9) is connected, the outlet of described condensate water pot (20) and the condensation of described heat exchanger group (19)
Water water inlet is connected, and the gas outlet of described condensate water pot (20) is connected with the air inlet of described first effect heating evaporation room (9)
Connecing, the outlet of described distillation water pot (17) is connected with the distilled water water inlet of described heat exchanger group (19), and described heat is handed over
Distilled water outlet tank up to standard with outside (21) of parallel operation group (19) is connected, and described heat exchanger group (19) also sets up
There is the strong brine discharge of strong brine import and brine outlet, described strong brine import and described low energy consumption MVR vaporizer (1)
Mouth is connected, and described brine outlet is connected with the strong brine recovery port of described low energy consumption MVR vaporizer (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620635350.XU CN205676308U (en) | 2016-06-24 | 2016-06-24 | Desulfurizing waste water processing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620635350.XU CN205676308U (en) | 2016-06-24 | 2016-06-24 | Desulfurizing waste water processing device |
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| Publication Number | Publication Date |
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| CN205676308U true CN205676308U (en) | 2016-11-09 |
Family
ID=57429151
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| CN201620635350.XU Expired - Fee Related CN205676308U (en) | 2016-06-24 | 2016-06-24 | Desulfurizing waste water processing device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106082514A (en) * | 2016-06-24 | 2016-11-09 | 珠海昊森万荣水处理科技有限公司 | Desulfuration waste water treatment process and processing means thereof |
| CN110180374A (en) * | 2019-06-03 | 2019-08-30 | 东方电气集团东方锅炉股份有限公司 | Adapt to lime stone quality comparison big wet flue gas desulfurization waste water exhaust system and method |
-
2016
- 2016-06-24 CN CN201620635350.XU patent/CN205676308U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106082514A (en) * | 2016-06-24 | 2016-11-09 | 珠海昊森万荣水处理科技有限公司 | Desulfuration waste water treatment process and processing means thereof |
| CN110180374A (en) * | 2019-06-03 | 2019-08-30 | 东方电气集团东方锅炉股份有限公司 | Adapt to lime stone quality comparison big wet flue gas desulfurization waste water exhaust system and method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161109 Termination date: 20210624 |