CN207158921U - A kind of decalcification processing unit of high calcium waste water - Google Patents
A kind of decalcification processing unit of high calcium waste water Download PDFInfo
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- CN207158921U CN207158921U CN201720755982.4U CN201720755982U CN207158921U CN 207158921 U CN207158921 U CN 207158921U CN 201720755982 U CN201720755982 U CN 201720755982U CN 207158921 U CN207158921 U CN 207158921U
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Abstract
The utility model discloses a kind of decalcification processing unit of high calcium waste water, including gypsum neutralization reaction groove, calcium carbonate breast addition vessel, waste acid storage tank, decalcification reactor, sedimentation basin and high calcium wastewater storage tank, the calcium carbonate breast addition vessel and the waste acid storage tank are communicated in the gypsum neutralization reaction groove；In addition, the gypsum neutralization reaction groove and high calcium wastewater storage tank are communicated in the decalcification reactor, the decalcification reactor is then communicated in the sedimentation basin, and the sedimentation basin is communicated in the gypsum neutralization reaction groove.The utility model can efficiently soften caused high calcium waste water after waste acid neutralizes, and realize advanced treating and the comprehensive utilization of acid water.
Description
Technical field
The present invention relates to wastewater hardness removing technical field, and in particular to one kind is used to wash the spent acidics such as waste acid to flue gas during smelting
High calcium waste water caused by water harnessing process carries out the device of decalcification processing.
Background technology
Often produce high calcium waste water in the flue gas during smelting washing acid waste water governance process such as waste acid, this kind of waste water hardness compared with
Height, easy fouling during reuse, so as to occluding device and pipeline, have a strong impact on the daily production activity of enterprise.Therefore, need to be to height
Calcium waste water carries out decalcification processing, to reduce the hardness of water, realizes the reuse of purified water.Softening decalcification technic master currently used for water
There are chemical precipitation method, high-molecule chelated medical method, membrane separation process and ion-exchange etc., but the shortcomings that respective all be present,
And treatment effect is undesirable, inexpensive decalcification is difficult to realize.
1. chemical precipitation method
Traditional decalcification processing method be do neutralization medicament with sulfuric acid, sodium carbonate does decalcification medicament.Contained with the calcium in waste water
On the basis of amount, even if according to mol ratio 1:1 adds sodium carbonate, and the effect of waste water decalcification is still limited, and water outlet calcium concentration is in more
Between 100~200mg/L, total salt quantity does not reduce substantially.More important is the processing cost of this method is higher, makes it should
It is restricted with scope, and the calcium salt impurity being settled out is more, can only be used as fixed-end forces, can not realize that resource is returned as product
Receive and utilize.
2. high-molecule chelated medical method
Chelatropic reaction is occurred using organic polymer chelate medicament and calcium ions and magnesium ions, generates stable chelate precipitation,
Effectively reduce the content of calcium ion in waste water.At present, the high-molecule chelated medicament of common decalcification have phosphorous polycarboxylic acids, acrylic acid/
The acryamidopropanesulfonic acid analog copolymer of 2- methyl -2 and the more ether methene phosphate of polyamino etc..This method cost is low, throws
Provide less, be simple to operate, but caused solid waste is difficult to handle, and secondary pollution be present.
3. membrane separation process
Membrane separation process includes counter-infiltration (RO) and nanofiltration (NF).Counter-infiltration is to form pressure differential using RO reverse osmosis membranes both sides
And waste water is handled, its aperture is nanoscale.When handling calcic waste water, because hydrone can pass freely through reverse osmosis membrane,
And the calcareous material particle diameter in waste water is more than membrane aperture, the side for being blocked in film can not be by useless so as to reach decalcification purification
The purpose of water.But needed in the method for reverse osmosis membrane decalcification, before reverse-osmosis treated easily dirty by pretreatment, reverse osmosis membrane
Dye.The particle diameter of nanofiltration is between counter-infiltration and ultrafiltration, but complex process, and processing cost is high, suitable for advanced treating, does not apply to
In the processing of high calcium waste water.
4. ion-exchange
Generally use sodium form cationic ion-exchange resin softening of water.Its principle be using this exchanger resin sodium ion with
Calcium ion in water is swapped, and calcium ion can be combined with ion exchange resin, so as to reduce calcium ion concentration in waste water.Specifically
Reaction equation is as follows：
R(SO3Na)2+Ca(HCO3)2——→R(SO3)2Ca+2NaHCO3
Resin can fail after being used for multiple times, and it can be regenerated using 5-8% saline solution, and the chemistry of generation is anti-
It should be：
R(SO3)2Ca+NaCl——→R(SO3Na)2+CaCl2
At present, because the amberlite lipid species that can be used in decalcification are less and expensive, therefore, ion exchange
Resin method decalcification receives certain limitation.
Utility model content
In view of the shortcomings of the prior art, the utility model aims to provide a kind of decalcification processing unit of high calcium waste water, can be high
Caused high calcium waste water after effect softening waste acid neutralizes, realizes advanced treating and the comprehensive utilization of acid water.
To achieve these goals, the utility model adopts the following technical scheme that：
A kind of decalcification processing unit of high calcium waste water, including gypsum neutralization reaction groove, calcium carbonate breast addition vessel, waste acid
Storage tank, decalcification reactor, sedimentation basin and high calcium wastewater storage tank, the calcium carbonate breast addition vessel and the waste acid storage tank connect
Pass through the gypsum neutralization reaction groove；In addition, the gypsum neutralization reaction groove and high calcium wastewater storage tank are communicated in the decalcification
Reactor, the decalcification reactor are then communicated in the sedimentation basin, and the sedimentation basin is communicated in the gypsum neutralization reaction groove.
Further, connect and neutralized on the pipeline of the gypsum neutralization reaction groove and waste acid storage tank from waste acid storage tank to gypsum
The direction of reactive tank is sequentially provided with feed pump and valve.
Further, it is additionally provided with flowmeter between the feed pump and valve.
Further, the gypsum neutralization reaction groove is communicated in the decalcification reactor by valve and blower fan.
Further, the bottom of the decalcification reactor is communicated in the sedimentation basin by delivery pump.
Further, the bottom of the sedimentation basin connects the gypsum neutralization reaction groove by feeding engine.
Further, the decalcification reactor is provided with the pH meter of the pH value for detecting the material in decalcification reactor,
The probe of wherein described pH meter is then located at the surface of the decalcification reactor positioned at the inside of the decalcification reactor, display screen.
Further, the overflow discharging opening of the gypsum neutralization reaction groove side is communicated in concentrator by chute.
Further, the decalcification reactor includes first-stage reactor and second reactor, the first-stage reactor and two
The bottom of stage reactor communicates；Aeration stirrer and gas distribution dress are equipped with the first-stage reactor and second reactor
Put, and the air inlet of the distribution device in gas-fluid in first-stage reactor and second reactor is communicated in gypsum neutralization reaction groove；
The first-stage reactor is communicated in the high calcium wastewater storage tank, and the second reactor is then communicated in the sedimentation basin.
The beneficial effects of the utility model are：
1st, comprehensive resource utilization rate is high.Using in waste acid and in CO 2 waste gas processing waste acid caused by gypsum workshop section processed
High calcium waste water with after, calcium depleted product calcium carbonate is then returned in waste acid and workshop section prepares gypsum and produces carbon dioxide, can be achieved
The advanced treating of acid water and comprehensive utilization.
2nd, decalcification reactor functional structure of the present utility model is perfect, can quickly realize the de- of calcium ion in high calcium waste water
Remove.The classification of decalcification reactor is set, and every grade is provided with distribution device in gas-fluid and aeration stirrer, makes gas-liquid in reactor
The abundant counter current contacting in portion, improves mass-transfer efficiency.
3rd, decalcification effect of the present utility model is good, and carbon dioxide utilization ratio is improved using gas liquid type decalcification reactor,
Calcium ion content in water outlet is reduced, decalcification treatment effect is more preferable.The purification water hardness is low, and calcium ion content is less than 40mg/L, can
Reuse and enterprise's production and living water, saving water resource, realize the zero-emission of waste water.
4th, the utility model has obvious economic benefit, after device stable operation, without extra reagent consumption, saves
Reagent cost；Waste acid is purified and decalcification after can qualified discharge or reuse, saved water resource；Product gypsum goes out as product
Sell, no solid waste needs to dispose, and saves solidification disposal of waste expense.
5th, the utility model automaticity is high, and all pumps and valve can all realize electrical control, and carbon dioxide occurs anti-
Answer and decalcification reaction end can be determined by built-in pH Parameters variation, operation is easier, and treatment effeciency is higher.
6th, the present apparatus is adapted to handle pH >=10.0, calcium concentration >=500mg/L high calcium waste water, is especially handled with lime stone
High calcium waste water caused by acid waste water, cost for wastewater treatment reduction very bigger than traditional decalcification processing method, water quality can be made
Meet reuse requirement.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Below with reference to accompanying drawing, the utility model will be further described, it is necessary to which explanation, the present embodiment is with this skill
Premised on art scheme, detailed embodiment and specific operating process are given, but the scope of protection of the utility model is not
It is limited to the present embodiment.
As shown in figure 1, a kind of decalcification processing unit of high calcium waste water, including gypsum neutralization reaction groove 1, calcium carbonate system breast add
Material container 2, waste acid storage tank 3, decalcification reactor, sedimentation basin 4 and high calcium wastewater storage tank 5.
The calcium carbonate breast addition vessel 2 and the waste acid storage tank 3 are communicated in the gypsum neutralization reaction groove 1.Its
In, the calcium carbonate breast addition vessel 2 is communicated in the top of the gypsum neutralization reaction groove 1, the waste acid by charge pump 6
Storage tank 3 passes sequentially through feed pump 7 and valve 8 (can use pneumatic operated valve) is communicated in the side of the gypsum neutralization reaction groove 1, and
And flowmeter 9 is provided between the feed pump 7 and valve 8.The overflow discharging opening of the opposite side of gypsum neutralization reaction groove 1 leads to
Cross chute 10 and be communicated in concentrator 11.
The gypsum neutralization reaction groove 1 and high calcium wastewater storage tank 5 are communicated in the decalcification reactor.Wherein, the stone
Cream neutralization reaction groove 1 is communicated in the decalcification reactor by valve 12 (can use pneumatic operated valve) and blower fan 13.The high calcium gives up
Water storage tank 5 is communicated in decalcification reactor in a manner of the discrepancy in elevation is flow automatically.The decalcification reactor is then communicated in the sedimentation basin 4, institute
State sedimentation basin 4 and be communicated in the gypsum neutralization reaction groove 1.
Specifically, the decalcification reactor includes first-stage reactor 14 and second reactor 15, the first-stage reactor 14
Communicated with the bottom of second reactor 15 by dehvery pump 16.It is respectively equipped with the first-stage reactor 14 and second reactor 15
Aeration stirrer 19,20 and distribution device in gas-fluid 17,18, and the gas in first-stage reactor 14 and second reactor 15
The air inlet of distribution apparatus 17,18 is communicated in the blower fan 13 by valve 21,22 respectively.Furthermore it is also possible to it is distributed in gas
Gas flowmeter is set on the passage that device 17,18 is connected with blower fan 13, to know the conveying capacity of carbon dioxide, so as to pass through control
The keying control carbon dioxide of valve 21,22 processed and the proportioning of high calcium waste water.
The bottom of the second reactor 15 is communicated in the sedimentation basin 4, the high calcium wastewater storage tank 5 by delivery pump 23
It is communicated in first-stage reactor 14.The bottom of the sedimentation basin 4 is then communicated in the gypsum neutralization reaction groove 1 by feeding engine 24.
In the present embodiment, the distribution device in gas-fluid 17, the 18 mainly main body by inner hollow and the gas that is uniformly distributed in main body
Hole, make blower and pipeline be communicated in the main body of distribution device in gas-fluid, valve is set on pipeline.It should be noted that other
The distribution device in gas-fluid of form can also use.
Further, the decalcification reactor is provided with (specifically in second reactor 15) for detecting decalcification reactor
In material pH value pH meter 25, wherein the probe of the pH meter 25 is located at the decalcification inside reactor, display screen then position
In the surface of the decalcification reactor.
The decalcification processing unit operation principle of the high calcium waste water is：When starting reaction, start entering at waste acid storage tank 3
Material pump 7 and valve 8 are opened, and by the waste acid pump in waste acid storage tank 3 toward in gypsum neutralization reaction groove 1, can be observed by flowmeter 9
The amount of being pumped into of waste acid, and the keying of feed pump 7 and valve 8 is controlled accordingly, so as to control the reaction ratio of waste acid and calcium carbonate.Open
Charge pump 6 at dynamic calcium carbonate breast feeder 2, calcium carbonate is charged with from the top of gypsum neutralization reaction groove 1.Calcium carbonate
Neutralization reaction occurs with waste acid so as to produce gypsum and carbon dioxide.Open connection gypsum neutralization reaction groove 1 and decalcification reactor
Blower fan 13 and valve 12, produced by the effect of blower fan 13 toward conveying in gypsum neutralization reaction groove 1 in the decalcification reactor
Carbon dioxide, be negative pressure in gypsum neutralization reaction groove 1.It is anti-that the high calcium waste water discrepancy in elevation in high calcium wastewater storage tank 5 flows automatically to decalcification
Answer in device, and the carbon dioxide counter current contacting reaction decalcification being transported in decalcification reactor.Open connection sedimentation basin 4 and decalcification is anti-
The delivery pump 23 of device is answered, high calcium waste water after decalcification by being pumped in the sedimentation basin 4, in sedimentation basin 4 after precipitation,
The feeding engine 24 for opening connection gypsum neutralization reaction groove 1 and sedimentation basin 4 starts, and the precipitation of calcium carbonate pump of the bottom of sedimentation basin 4 is past
In the gypsum neutralization reaction groove 1 waste acid neutralization reaction is participated in as neutralization medicament.As can be seen that after plant running is stable,
The self-sufficiency of neutralization medicament-calcium carbonate can be realized, extra medicament will not be consumed again.React and obtain in gypsum neutralization reaction groove 1
Gypsum then by overflow discharging opening by the discrepancy in elevation of chute 10 from be left in concentrator 11 carry out gypsum product production.Precipitation
Supernatant in pond is the water Jing Guo decalcification, can be with reuse or outer row.
Specifically, in decalcification, it is first turned on the valve being connected in first-stage reactor 14 and second reactor 15 with blower fan 13
Door 21,22, carbon dioxide is transported in first-stage reactor 14 and second reactor 15 by blower fan 13 by distribution device in gas-fluid.It is high
Calcium waste water the discrepancy in elevation gravity flow by way of enter first-stage reactor 14 in, and with the distribution device in gas-fluid in first-stage reactor 14
The carbon dioxide counter current contacting of 17 outputs, reaction is stirred by aeration stirrer 19.Open connection first-stage reactor 14
With the dehvery pump 16 of second reactor 15, the reaction product in first-stage reactor 14 is pumped in second reactor 15, is continued
The carbon dioxide exported with the distribution device in gas-fluid 18 in second reactor 15 is further in the presence of aeration stirrer 20
Fully reaction, is delivered to sedimentation basin 4 by final reaction product finally by delivery pump 16 and is precipitated.In actual applications,
The operation of all valve, pump, blower fan and aeration stirrer etc. can be realized by electrical control.The terminal of reaction can be with
The pH value control of waste water in second reactor according to measured by pH meter after decalcification, when pH value reaches the pH of setting,
Then this decalcification is completed.
For those skilled in the art, technical scheme that can be more than and design, make various corresponding
Change and deformation, and all these change and deformation should be construed as being included in the utility model claims protection domain it
It is interior.
Claims (9)
1. a kind of decalcification processing unit of high calcium waste water, it is characterised in that including gypsum neutralization reaction groove, the breast charging of calcium carbonate system
Container, waste acid storage tank, decalcification reactor, sedimentation basin and high calcium wastewater storage tank, the calcium carbonate breast addition vessel and the dirt
Acid storage tank is communicated in the gypsum neutralization reaction groove；In addition, the gypsum neutralization reaction groove connects with high calcium wastewater storage tank
In the decalcification reactor, the decalcification reactor is then communicated in the sedimentation basin, and the sedimentation basin is communicated in the gypsum
And reactive tank.
2. the decalcification processing unit of high calcium waste water according to claim 1, it is characterised in that connect in the gypsum and anti-
Answer and be sequentially provided with feed pump and valve from waste acid storage tank to the direction of gypsum neutralization reaction groove on the pipeline of groove and waste acid storage tank.
3. the decalcification processing unit of high calcium waste water according to claim 2, it is characterised in that the feed pump and valve it
Between be additionally provided with flowmeter.
4. the decalcification processing unit of high calcium waste water according to claim 1, it is characterised in that the gypsum neutralization reaction groove
The decalcification reactor is communicated in by valve and blower fan.
5. the decalcification processing unit of high calcium waste water according to claim 1, it is characterised in that the bottom of the decalcification reactor
Portion is communicated in the sedimentation basin by delivery pump.
6. the decalcification processing unit of high calcium waste water according to claim 1, it is characterised in that the bottom of the sedimentation basin leads to
Cross feeding engine and connect the gypsum neutralization reaction groove.
7. the decalcification processing unit of high calcium waste water according to claim 1, it is characterised in that the decalcification reactor is set
There is the pH meter for detecting the pH value of the material in decalcification reactor, wherein the probe of the pH meter is located at the decalcification reactor
Inside, display screen then be located at the decalcification reactor surface.
8. the decalcification processing unit of high calcium waste water according to claim 1, it is characterised in that the gypsum neutralization reaction groove
The overflow discharging opening of side is communicated in concentrator by chute.
9. the decalcification processing unit of high calcium waste water according to claim 1, it is characterised in that the decalcification reactor includes
First-stage reactor and second reactor, the bottom of the first-stage reactor and second reactor communicate；The first-stage reactor and
Aeration stirrer and distribution device in gas-fluid, and the gas in first-stage reactor and second reactor are equipped with second reactor
The air inlet of body distribution apparatus is communicated in gypsum neutralization reaction groove；The first-stage reactor is communicated in the high calcium waste water storage
Tank, the second reactor are then communicated in the sedimentation basin.
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| CN201720755982.4U CN207158921U (en) | 2017-06-27 | 2017-06-27 | A kind of decalcification processing unit of high calcium waste water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111592190A (en) * | 2020-06-01 | 2020-08-28 | 赛恩斯环保股份有限公司 | Treatment method of carbonate system wastewater |
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- 2017-06-27 CN CN201720755982.4U patent/CN207158921U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111592190A (en) * | 2020-06-01 | 2020-08-28 | 赛恩斯环保股份有限公司 | Treatment method of carbonate system wastewater |
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