CN105461111B - A kind of method for waste water and its device using calcium carbide Slag treatment containing technical hydrochloric acid - Google Patents
A kind of method for waste water and its device using calcium carbide Slag treatment containing technical hydrochloric acid Download PDFInfo
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- CN105461111B CN105461111B CN201510916847.9A CN201510916847A CN105461111B CN 105461111 B CN105461111 B CN 105461111B CN 201510916847 A CN201510916847 A CN 201510916847A CN 105461111 B CN105461111 B CN 105461111B
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Abstract
The present invention relates to calcium carbide Slag treatment industrial acidic wastewater technical fields, especially a kind of method for waste water and its device using calcium carbide Slag treatment containing technical hydrochloric acid, by during processing, by acid waste water is passed through after neutralization pond neutralisation treatment, it is passed through into the Combined Treatment of peace and quiet tower a and peace and quiet tower b again, so that the acidic molecular in acid waste water enters in peace and quiet tower b after being released in peace and quiet tower a, and by spray-absorption processing in peace and quiet tower b, reduce the content of the sour gas molecule in the gas evaporated, gas is pumped into aeration absorption processing in aeration tower by blower again, so that sour gas molecule is completely absorbed in aeration tower, so that the gas of emptying is nitrogen and/or compressed air, and nitrogen and/or compressed air is combined to enter in evacuation procedure from neutralization pond, circulate in process, into And reach gas-liquid mixed state, so that more thorough to acid waste water processing.
Description
Technical field
The present invention relates to calcium carbide Slag treatment industrial acidic wastewater technical fields, especially a kind of to contain work using calcium carbide Slag treatment
The method for waste water and its device of industry hydrochloric acid.
Background technique
In caustic soda production, waste water largely containing industrial acids can be generated, so that phosphoric acid, sulfurous acid, hydrochloric acid
It is hoarded Deng in waste water, the waste water of discharge is caused to show acid state, discharge will will cause a large amount of in the environment
Water pollution causes security risk to living environment.In consideration of it, also there is the largely place about acid waste water in the prior art
Reason scheme, however, being what kind of acid waste water processing scheme, purpose is to reduce acid content in waste water, so that emitting
Waste water be in neutral or alkalinity；And reaching cardinal principle used by this property is exactly acid-base neutralization reaction, i.e., to it
The middle a large amount of alkaline matter of investment so that acid-base neutralization reaction occurs for the alkaline matter of acid and investment in waste water, and then reaches
Increase pH value and obtains purpose.And when putting into alkaline material, the quick lime etc. mainly used, so as to the cost of acid waste water processing
It is higher；Also, when putting into alkaline matter progress neutralization reaction, a small amount of heat can be generated during neutralizing due to it, in turn
It causes the acidic molecular in acid waste water to evaporate from solution, in turn results in the secondary pollution of acid waste water.
Based on this, low cost, low energy consumption how are realized, and the treatment of acidic wastewater for the secondary pollution that avoids that treated
Technical solution becomes the technical issues of those skilled in the art overcome for a long time.
Summary of the invention
In order to solve the above technical problems existing in the prior art, the present invention provide it is a kind of using calcium carbide Slag treatment containing work
The method for waste water and its device of industry hydrochloric acid.
It is achieved particular by following technical scheme:
A kind of method for waste water using calcium carbide Slag treatment containing technical hydrochloric acid, the waste liquid that will be emitted in production process of hydrochloric acid
Mixed in closed neutralization pond with the carbide slag slurries in calcium carbide production technology, and be passed through into neutralization pond compressed air and/or
Person's nitrogen when being passed through agitation reaction to pH value is 7-13, stops adding for waste liquid so that gas stirs mixed solution after entering
Enter, obtains gas-liquid mixed slurry；And the gas that the mixed liquor of acquisition is sent into peace and quiet tower a and is handled, and will be excluded at the top of peace and quiet tower a
It is handled by peace and quiet tower b, the gas come out at the top of peace and quiet tower b, will be at the top of aeration tower after blower is sent into aeration tower and is handled
The gas of exclusion carries out emptying process；The bottom peace and quiet tower a come out slurry after peace and quiet pump a is mixed with supernatant, again by
Be sent into peace and quiet tower a circulation handled to its it is up to standard after, it is subjected to blowdown from pollution discharge pond a；The bottom peace and quiet tower b ejects
Slurry after peace and quiet pump b is mixed with the supernatant in head tank, be admitted to recycle in peace and quiet tower b and handled to it
After up to standard, it is subjected to blowdown from pollution discharge pond b, waste water of the calcium carbide Slag treatment containing technical hydrochloric acid can be completed；The aeration
What is held in tower is the mixed solution of time sodium and sodium hydroxide.The mixed solution, pH value 7-12.
The peace and quiet tower b, pressure environment therein are tiny structure environment.
The tiny structure environment is 0.01~0.03MPa smaller than the pressure of external environment.
The secondary sodium, is the mixture of fresh secondary sodium, useless secondary two kinds of sodium, and mixed pH value is 7-8；It is wherein fresh
The effective chlorine mass percent of secondary sodium is 0.085-0.12%, and the effective chlorine mass percent in time sodium that gives up is 0.02%.
The peace and quiet pump a, be will be added the mixed material liquid of supernatant be sent to by peace and quiet tower a top of supply line into
Row spray process；The peace and quiet pump b is that time mixed material liquid of sodium will be added to be sent to close to the top end part peace and quiet tower b
Position carries out spray process.
A kind of waste plant using calcium carbide Slag treatment containing technical hydrochloric acid, by concentration basin, slush pump, neutralization pond, waste slurry pump,
Pollution discharge pond, hydrochloric acid trough, nitrogen bath, peace and quiet tower a, peace and quiet tower b, peace and quiet pump a, peace and quiet pump b, supernatant liquid bath, head tank, pollution discharge pond a,
Pollution discharge pond b, blower, aeration tower, emptying slot, compressed air slot composition；Wherein, acid tube, top are provided on the left side wall of neutralization pond
Portion, which is provided on tracheae and carbide slag slurries entrance, front side wall, is provided with sewage pipe and probe tube, concentration basin by diameter 133 pipe with
Slush pump connection, slush pump are connected to by the pipe of diameter 159 with carbide slag slurries entrance, and tracheae, which is divided into, is managed with nitrogen bath by diameter 57
The entrance of connection, the entrance being connected to by 57 pipe of diameter with compressed air slot are entered with waste slurry pump by what 133 pipe of diameter was connected to
Mouthful；Pollution discharge pond is connected to waste slurry pump by 133 pipe of diameter；Hydrochloric acid trough is connected to by the pipe of diameter 108 with acid tube；Sewage pipe is by straight
The pipe of diameter 200 is connected to the side peace and quiet tower a lower wall；The bottom peace and quiet tower a connects by the pipe of diameter 159 and one of import of peace and quiet pump a
Logical, another import of peace and quiet pump a is connected to by the pipe of diameter 133 with supernatant liquid bath, and the outlet of peace and quiet pump a is managed by diameter 89
It is connected to the side upper wall of peace and quiet tower a, and is provided on 159 pipe of diameter between the bottom peace and quiet tower a and peace and quiet pump a and controllably connects
Logical switch, and the other end switched is connected to pollution discharge pond a；The top of peace and quiet tower a is by the pipe of diameter 89 with peace and quiet tower b's
Side lower wall is connected；The bottom of peace and quiet tower b is peace and quiet to pump b's by the pipe of diameter 159 and the peace and quiet one of inlet communication for pumping b
Another import is connected to by the pipe of diameter 133 with head tank, and the side of diameter 89 pipe and peace and quiet tower b is passed through in the outlet of peace and quiet pump b
Upper wall connection, and it is provided with the switch being controllably connected on 159 pipe of diameter between the bottom peace and quiet tower b and peace and quiet pump b, and
The other end of switch is connected to pollution discharge pond b；The top of peace and quiet tower b is connected to by the pipe of diameter 89 with blower, and blower passes through diameter
89 pipes are connected to aeration tower, are connected to by the pipe of diameter 219 with emptying slot at the top of aeration tower.
The neutralization pond is made of neutralization pond a and neutralization pond b, and neutralization pond a is identical with the structure of neutralization pond b.
The diameter 159 that the slush pump is connected to carbide slag slurries entrance is managed, and offers the switch being controllably connected to thereon, and
And the other end of switch is connected to sheet frame.
A kind of neutralization pond of the waste water using calcium carbide Slag treatment containing technical hydrochloric acid, by pond case, front and back support tube, up and down support
Bar, carbide slag slurries entrance, tracheae, acid tube, left and right sidesing post, probe tube, sewage pipe, connector, liquid level pipe, bend pipe composition,
In pond box top is provided with carbide slag slurries entrance, tracheae, probe tube and sewage pipe are provided on the case front side wall of pond, in pond case
The partition of front and back is provided with front and back support tube, and is airtight connection, between pond case or so wall in the junction before and after the case of pond
It is provided with left and right sidesing post, and is airtight connection, is provided with branch up and down between upper lower wall on pond in pond case or so junction
Strut, and be airtight connection, offer liquid level hole on the case left side wall of pond at the pond case place of being vertically connected with, and liquid level hole is passed through
Connector is connected to, in the inlet and outlet of pond case left side wall setting acid tube at left and right sidesing post upper position with liquid level pipe, and
And acid tube is connected to form U-typed pipe by bend pipe in the case of pond, and is provided with hole on acid tube and bend pipe.
Compared with prior art, technical effect of the invention is embodied in:
It is peace and quiet by passing through by acid waste water by neutralization pond neutralisation treatment and then by it by during processing
The Combined Treatment of tower a and peace and quiet tower b, so that the acidic molecular in acid waste water enters clearly after being released in peace and quiet tower a
In net tower b, and by spray-absorption processing in peace and quiet tower b, the content of the sour gas molecule in the gas evaporated is reduced,
Gas is pumped into aeration absorption processing in aeration tower by blower again, so that sour gas molecule is inhaled completely in aeration tower
It receives, so that the gas of emptying is nitrogen and/or compressed air, and nitrogen and/or compressed air is combined to enter row from neutralization pond
It in null process, circulates in process, and then reaches gas-liquid mixed state, so that more thorough to acid waste water processing.
It is configured by the structure of the processing unit to calcium carbide Slag treatment waste water containing technical hydrochloric acid, and by neutralization pond again
Upper setting tracheae and sewage pipe enable the gas in tracheae that agitation reaction occurs to neutralising fluid in neutralization pond, improve
Mixture of gas and liquid material is discharged into peace and quiet tower a by the efficiency of neutralization in conjunction with by sewage pipe by sewage pipe, so that
After gas-liquid separates in peace and quiet tower a, and then slurries fall to the bottom peace and quiet tower a, constantly sprayed after being mixed with supernatant
Contact treatment is carried out with the gas in peace and quiet tower a after leaching, so that the acidic molecular in the gas in peace and quiet tower a obtains further
Removing is transferred in peace and quiet tower b in conjunction with by the gas come out in peace and quiet tower a, and carries out spray-absorption, so that its sour gas point
Son is further removed, and is handled by the exhausting of blower 28, so that negative pressure state is in peace and quiet tower a and peace and quiet tower b,
And makes the gas-liquid mixed in neutralization pond starch solution and enter peace and quiet tower a, and gas solution enters peace and quiet tower b in peace and quiet tower a
In, and then realize the purpose of automatic continuous Seal treatment acid waste water.
The present invention by by peace and quiet tower b come out gas enter in aeration tower be aerated after with onium hydroxide solution and hypochlorous acid
After the mixed solution processing of sodium solution, so that eventually entering into hydrogen sulfide, hydrogen chloride, the phosphatization hydrogen of the vent gas in emptying slot
The content of body is zero.
The present invention on the neutralization pond using waste plant of the calcium carbide Slag treatment containing technical hydrochloric acid using diameter 133 by being managed
It connects waste slurry pump 12 and pollution discharge pond 11 is connected, so that causing in liquid level pipe during carbide slag is discharged into neutralization pond
It when measuring excess, can be adjusted by waste slurry pump 12, avoid stifled slurry phenomenon；And by between slush pump and neutralization pond
159 pipe of diameter on be provided with the route connecting with sheet frame so that after the carbide slag slurries in neutralization pond are excessive, by carbide slag slurries
It is sent into sheet frame and carries out filters pressing processing, improve the treatment effeciency to carbide slag slurries.
The present invention it is most important have the technical effect that acid waste water is neutralized in neutralization pond with carbide slag after, and
Control neutralization pond is closed neutralization pond, after compressed air and/or nitrogen are passed through into neutralization pond, so that gas is to N-process
Agitation reaction occurs, but also the reaction slurry in neutralization pond is enabled to be excluded in neutralization pond, into peace and quiet tower a, and
And gas-liquid separation occurs in the peace and quiet tower a of zai9, so that after gas is excluded at the top of peace and quiet tower a, into peace and quiet tower b,
After the absorption processing in peace and quiet tower b, aeration tower reaction is entered back into, so that the hydrogen phosphide, hydrogen sulfide, hydrogen chloride in gas
Content is reduced to zero；And make the addition in nitrogen, compressed air, so that reducing spent acidic after vapor liquid equilibrium point is destroyed
Sour gas molecule escapement ratio in water reduces the content of the molecule of sour gas in gas componant, so as to acid waste water
During reason, the amount of the sour gas molecule evaporated is less, reduces environmental pollution, also reduces subsequent treatment process
Load.
The present invention is welded during preparing neutralization pond using UPVC hardboard, and inside it using branch
Strut or support tube are supported processing, and the backing material used is DN140PVC tubing, so that its intensity is higher, it is resistance to
Corrosivity is stronger, extends service life, reduces equipment preparation cost；It is limited by the size to neutralization pond, so that ensuring to locate
Under the premise of reason amount reaches maximized, can be avoided it is excessive caused by support rod, support tube it is too long when, the dynamics of support is poor
Defect be not susceptible to deform, improve safety so that the stability of neutralization pond is more excellent.
Detailed description of the invention
Fig. 1 is the waste plant schematic diagram using calcium carbide Slag treatment containing technical hydrochloric acid.
133 pipe 4- diameter of 1- concentration basin 2- slush pump 3- diameter, 159 pipe 5- sheet frame 6- neutralization pond a7- neutralization pond b8- compression
57 pipe 10- nitrogen bath 11- pollution discharge pond 12- waste slurry pump 13- hydrochloric acid trough 14- diameter of air groove 9- diameter, 108 pipe 15- diameter 200 pipe
The peace and quiet 89 peace and quiet pump a23- of pipe 20- pollution discharge pond b21- supernatant liquid bath 22- of tower b18- pollution discharge pond a19- diameter of the peace and quiet tower a17- of 16- is clear
Net pump 219 pipe 26- of b24- head tank 25- diameter empties slot 27- aeration tower 28- blower.
Fig. 2 is the structural schematic diagram using neutralization pond in waste plant of the calcium carbide Slag treatment containing technical hydrochloric acid.
Fig. 3 is the schematic top plan view after the structural schematic diagram of the neutralization pond in Fig. 2 is splitted from dotted line.
Lower support bar 32- carbide slag slurries entrance 33- tracheae 34- acid tube 35- or so on support tube 31- before and after the case 30- of the pond 29-
Support rod 36- probe tube 37- sewage pipe 38- connector 39- liquid level pipe 40- bend pipe.
Specific embodiment
It is limited with specific embodiment technical solution of the present invention is further, but is required with reference to the accompanying drawing
The range of protection is not only limited to made description.
Secondary sodium of the present invention refers to liquor natrii hypochloritis.
It is heretofore described up to standard to refer to the discharge standard for meeting exhaust gas and/or waste liquid as defined in environmental protection administration.
133 pipe of diameter of the present invention is the pipe that diameter is 133cm；The pipe of diameter 159 is the pipe that diameter is 159cm；Directly
The pipe of diameter 57 is the pipe that diameter is 57cm；The pipe of diameter 108 is the pipe that diameter is 108cm；The pipe of diameter 200 is the pipe that diameter is 200cm；
The pipe of diameter 219 is the pipe that diameter is 219cm；The pipe of diameter 89 is the pipe that diameter is 89cm；
Above-mentioned pipe is PVC pipe.
Neutralization pond of the invention, pond case is prepared using the UPVC hardboard with a thickness of 20mm, a length of
5.8m, width 3m, high 1.5m, and the equidistant fixing process of channel steel is used in the surrounding of pond case and bottom；
Skeleton made of the support tube or support rod used in the present invention interts for the pvc pipe of DN140.
The hole in acid tube in the present invention and the non-uniform aperture of the hole location on bend pipe, its main function are to increase acid
The contact area of rain carbide slag, so that reaction is more full and uniform.
Signified carbide slag is the carbide slag slurries solution that solid content is 12% in the present invention；What is used is useless containing technical hydrochloric acid
The concentration of technical hydrochloric acid in water is the waste liquid less than 31%.
Signified supernatant of the invention is carbide slag during by concentration, obtains supernatant during staticly settling
Liquid.Supernatant in head tank can also be onium hydroxide solution and the mixed solution of liquor natrii hypochloritis, and meet effective chlorine
Mass percentage be 0.085-0.12%.
Embodiment one
A kind of method for waste water using calcium carbide Slag treatment containing technical hydrochloric acid, the waste liquid that will be emitted in production process of hydrochloric acid
Mixed in closed neutralization pond with the carbide slag slurries in calcium carbide production technology, and be passed through into neutralization pond compressed air and/or
Person's nitrogen when being passed through agitation reaction to pH value is 7-13, stops adding for waste liquid so that gas stirs mixed solution after entering
Enter, obtains gas-liquid mixed slurry；And the gas that the mixed liquor of acquisition is sent into peace and quiet tower a and is handled, and will be excluded at the top of peace and quiet tower a
It is handled by peace and quiet tower b, the gas come out at the top of peace and quiet tower b, will be at the top of aeration tower after blower is sent into aeration tower and is handled
The gas of exclusion carries out emptying process；The bottom peace and quiet tower a come out slurry after peace and quiet pump a is mixed with supernatant, again by
Be sent into peace and quiet tower a circulation handled to its it is up to standard after, it is subjected to blowdown from pollution discharge pond a；The bottom peace and quiet tower b ejects
Slurry after peace and quiet pump b is mixed with the supernatant in head tank, be admitted to recycle in peace and quiet tower b and handled to it
After up to standard, it is subjected to blowdown from pollution discharge pond b, waste water of the calcium carbide Slag treatment containing technical hydrochloric acid can be completed；The aeration
What is held in tower is the mixed solution of time sodium and sodium hydroxide.
The mixed solution, pH value can also be 7-12.The peace and quiet tower b, pressure ratio external environment therein
The small 0.01~0.03MPa of pressure.The secondary sodium is the mixture of fresh secondary sodium, useless secondary two kinds of sodium, mixed pH value
For 7-8；Wherein the effective chlorine mass percent of fresh secondary sodium is 0.085-0.12%, and the mass percent of effective chlorine is being lower than
After 0.085%, the addition that will lead to a large amount of useless sodium is increased into processing load so that the usage amount of useless sodium increases；
And after the present invention is also adjusted to 0.084%, significantly to reduce the amount of calcium carbide Slag treatment, so that processing load
When significantly increasing, and changing between 0.085~0.12%, load is handled without apparent difference；It is effective in useless sodium
Chlorine mass percent is that can be achieved less than or equal to 0.02%.The present embodiment carries out the percentage during use
Adjustment processing, 0.02%, 0.01%, 0.005% can be achieved same effect；The peace and quiet pump a, is that will add
Enter the mixed material liquid of supernatant to be sent to by peace and quiet tower a top of supply line progress spray process；The peace and quiet pump b is
Time mixed material liquid of sodium will be added to be sent to close to peace and quiet tower b top of supply line progress spray process.
Embodiment two
As shown in Figure 1, 2, a kind of waste plant using calcium carbide Slag treatment containing technical hydrochloric acid, by concentration basin 1, slush pump 2,
It is neutralization pond, waste slurry pump 12, pollution discharge pond 11, hydrochloric acid trough 13, nitrogen bath 10, peace and quiet tower a16, peace and quiet tower b17, peace and quiet pump a22, peace and quiet
Pump b23, supernatant liquid bath 21, head tank 24, pollution discharge pond a18, pollution discharge pond b20, blower 28, aeration tower 27, emptying slot 26, compression sky
Air drain 8 forms；Wherein, be provided with acid tube 34 on the left side wall of neutralization pond, top is provided with tracheae 33 and carbide slag slurries entrance 32,
Sewage pipe 37 and probe tube 36 are provided on front side wall, concentration basin 1 is connected to by 133 pipe 3 of diameter with slush pump 2, and slush pump 2 passes through
159 pipe 4 of diameter is crossed to be connected to carbide slag slurries entrance 32, tracheae 33 divide for be connected to nitrogen bath 10 by 57 pipe 9 of diameter entrance,
The entrance being connected to compressed air slot 8 by 57 pipe 9 of diameter, the entrance being connected to waste slurry pump 12 by 133 pipe 3 of diameter；Blowdown
Pond 11 is connected to waste slurry pump 12 by 133 pipe 3 of diameter；Hydrochloric acid trough 13 is connected to by 108 pipe 14 of diameter with acid tube 34；Sewage pipe 37
It is connected to by 200 pipe 15 of diameter with the side peace and quiet tower a16 lower wall；The bottom peace and quiet tower a16 is by 159 pipe 4 of diameter with peace and quiet pump a22's
Another import of one of inlet communication, peace and quiet pump a22 is connected to by 133 pipe 3 of diameter with supernatant liquid bath 21, peace and quiet pump
The outlet of a22 is connected to by 89 pipe 19 of diameter with the side upper wall of peace and quiet tower a16, and in the bottom peace and quiet tower a16 and peace and quiet pump a22
Between 159 pipe 4 of diameter on be provided with the switch being controllably connected to, and the other end switched is connected to pollution discharge pond a18；It is peace and quiet
The top of tower a16 is connected by 89 pipe 19 of diameter with the side lower wall of peace and quiet tower b17；Diameter 159 is passed through in the bottom of peace and quiet tower b17
One of inlet communication of pipe 4 and peace and quiet pump b17, another import of peace and quiet pump b17 is by 133 pipe 3 of diameter and a high position
Slot 24 is connected to, and the outlet of peace and quiet pump b23 is connected to by 89 pipe 19 of diameter with the side upper wall of peace and quiet tower b17, and in peace and quiet tower b17
The switch being controllably connected to, and the other end switched and row are provided on 159 pipe 4 of diameter between bottom and peace and quiet pump b23
Dirty pond b20 connection；The top of peace and quiet tower b17 be connected to by 89 pipe 19 of diameter with blower 28,89 pipe 19 of the process of blower 28 diameter and
Aeration tower 27 is connected to, and is connected to by 219 pipe 25 of diameter with emptying slot 26 at the top of aeration tower 27.
Embodiment three
As shown in Figure 1, other are the same as embodiment 2, the neutralization pond, by neutralization pond a6 on the basis of embodiment 2
It is formed with neutralization pond b7, neutralization pond a6 is identical with the structure of neutralization pond b7.The slush pump 2 is connected to carbide slag slurries entrance 32
159 pipe 4 of diameter, offer the switch being controllably connected to thereon, and the other end switched is connected to sheet frame 5.
Example IV
As shown in Figure 2 and Figure 3, a kind of neutralization pond of the waste water using calcium carbide Slag treatment containing technical hydrochloric acid, by pond case 29, preceding
Rear supporting tube 30, upper lower support bar 31, carbide slag slurries entrance 32, tracheae 33, acid tube 34, left and right sidesing post 35, probe tube 36, row
Dirty pipe 37, connector 38, liquid level pipe 39, bend pipe 40 form, wherein being provided with carbide slag slurries entrance 32, tracheae at the top of pond case 29
33, it is provided with probe tube 36 on 29 front side wall of pond case and sewage pipe 37, the partition in 29 front and back of pond case are provided with front and back support
Pipe 30, and it is provided with left and right sidesing post 35 for airtight connection, between 29 or so wall of pond case in the junction of 29 front and back of pond case,
And it is airtight connection, is provided with upper lower support bar 31 between lower wall on pond case 29 in 29 or so junction of pond case, and
Case 29 place of being vertically connected in pond is airtight connection, offers liquid level hole on 29 left side wall of pond case, and connector is passed through in liquid level hole
38 are connected to liquid level pipe 39, the import of acid tube 34 are arranged at 35 upper position of left and right sidesing post in 29 left side wall of pond case and goes out
Mouthful, and acid tube 34 forms U-typed pipe by the connection of bend pipe 40 in pond case 29, and is provided on acid tube 34 and bend pipe 40
Hole.Uniformly or non-uniformly hole, the diameter in the hole enable to the acid come out from acid tube 34 to show injection to the hole location
State.
Embodiment five
On the basis of example 1, the device of embodiment two is applied in the processing step in embodiment 1, tool
Body processing mode is will to exclude next carbide slag in carbide slag production technology to be condensed into solid content in concentration basin 1 to be 12% or so
Carbide slag slurries after, then by carbide slag slurries by 133 pipe 3 of diameter enter slush pump 2 in after, according to neutralization pond a6 and neutralization pond b7
In treating capacity so that it is entered in neutralization pond by 159 pipe 4 of diameter from carbide slag slurries entrance, and extra carbide slag slurries from
Circulation is handled at sheet frame, and after its plate compression, will achieve the purpose that handle carbide slag slurries；And work will be contained in hydrochloric acid trough simultaneously
The waste water of industry hydrochloric acid is entered in neutralization pond after processing to pH value is 7-12 by acid tube, then it will be passed through by sewage pipe 37
200 pipe of diameter is discharged into peace and quiet tower a and is handled, and in neutralization pond in outside discharge process, and it is empty to be passed through compression thereto
Gas and nitrogen, so that compressed air and nitrogen squeeze into sewage pipe the slurry in neutralization pond discharge, it is ensured that in neutralization pond
Slurry is drained, and in addition to this, by during neutralization reaction, being passed through gas thereto, is also reached to closed neutralization pond
In liquid agitation treatment so that neutralization reaction carries out in whipping process, and combine and gas-liquid mixed slurry be sent into peace and quiet tower a
In after, cause gas to come out from the top of peace and quiet tower a, and it is also possible that during neutralization reaction, hydrogen sulfide, hydrogen phosphide,
The sour gas such as hydrogen chloride molecule is in gas is carried over peace and quiet tower a, then after handling in peace and quiet tower b, at aeration tower
Reason, so that the discharge amount of hydrogen sulfide, hydrogen phosphide, hydrogen chloride gas goes to zero, avoids in treatment of acidic wastewater, sour gas
Secondary pollution phenomenon caused by molecule volatilizees；And the connection with neutralization pond is managed by waste slurry pump and pollution discharge pond and diameter 133,
So that the carbide slag slurries in neutralization pond are excessive, i.e., when liquid level amount is higher, it is drawn in pollution discharge pond by waste slurry pump, operation is avoided to lose
Accidentally after cause the carbide slag slurries in neutralization pond excessively cause it is not easy to operate and be difficult to realize to the waste water containing technical hydrochloric acid into
The defect of row processing；Raising can operating rate；After slurry to be combined by neutralization pond is excluded by sewage pipe, into peace and quiet tower
Wash cycles processing is carried out by supernatant in a16, so that the harmful components in its slurry are removed, so that carbide slag and salt
Acid is discharged after generating calcium chloride；The processing in peace and quiet tower b17 again is repeated in passing through peace and quiet tower b17, so that evaporate
Hydrochloric acid in gas can be removed effectively, and combine blower that the gas come out at the top of peace and quiet tower b is pumped into aeration tower 27
In after so that its in aeration tower by after Air Exposure so that the gas evaporated is filled with sodium hypochlorite and sodium hydroxide
It is allocated as after using, reduces the content of hydrogen sulfide therein, hydrogen phosphide, hydrogen chloride, so that its standard for meeting discharge, so as to work is contained
The processing of the waste water of industry hydrochloric acid is divided into the combination processing to waste liquid and exhaust gas, avoids hydrogen chloride, hydrogen phosphide, hydrogen sulfide etc.
Sour gas evaporate into environment the pollution for causing environment.
Embodiment six
On the basis of example 1, the device in the neutralization pond of example IV kind in conjunction with the embodiments two is applied to implement
In example one using in waster water process of the calcium carbide Slag treatment containing technical hydrochloric acid, specifically on the basis of the operation of embodiment five,
Its principle realized in neutralization pond be by carbide slag slurries after the entrance of carbide slag slurries entrance, and be passed through from acid tube containing work
The waste water of industry hydrochloric acid, waste water by the hole being arranged on acid tube spurt into neutralization pond with carbide slag slurries mixed processing so that wherein
Hydrochloric acid and calcium ion form calcium chloride, and then achieve the purpose that increase pH, so that after pH value reaches 7-12, then the row of passing it through
Dirty pipe 37 is expelled in peace and quiet tower a16, by subsequent processing step；By the uneven or uniform aperture on acid tube again
Design improve the contact area between solution so that waste water shows the state of injection and carbide slag slurries mix neutralization, improve
Neutralization reaction efficiency, improves the effect to wastewater treatment, reduces cost for wastewater treatment；Also make waving in waste water simultaneously
Hair property gas is handled in closed neutralization pond, is reduced the volatile quantity of exhaust gas, is reduced environmental pollution rate；And the present invention passes through
It crosses again in peace and quiet tower a16, peace and quiet tower b17 after handling, so that the slurry formed is discharged after showing alkalinity or neutrality, reduces
Acid waste water pollution on the environment；It but also is sour gas in waste water by the processing in peace and quiet tower a, peace and quiet tower b
After evaporate, in conjunction with the processing in aeration tower so that hydrogen phosphide, hydrogen sulfide, hydrogen chloride gas in aeration tower with time chlorine
Sour sodium, sodium hydroxide solution are reacted, and then reduce the content of the hydrogen phosphide in exhaust gas, hydrogen sulfide and hydrogen chloride, so that useless
The discharge amount of sour gas in gas is zero, reduces the emission index and volatility of sour gas in acid waste water.
Claims (8)
1. a kind of method for waste water using calcium carbide Slag treatment containing technical hydrochloric acid, which is characterized in that will be discharged in production process of hydrochloric acid
Waste liquid out mixes in closed neutralization pond with the carbide slag slurries in calcium carbide production technology, and compression is passed through into neutralization pond
Air and/or nitrogen when being passed through agitation reaction to pH value is 7-13, stop so that gas stirs mixed solution after entering
The addition of waste liquid obtains gas-liquid mixed slurry；And the gas-liquid mixed of acquisition slurry is sent into peace and quiet tower a and is handled, and peace and quiet tower a is pushed up
The gas of portion's exclusion is handled by peace and quiet tower b, and the gas come out at the top of peace and quiet tower b is sent into aeration tower after processing by blower,
The gas excluded at the top of aeration tower is subjected to emptying process；The slurry that the bottom peace and quiet tower a comes out is mixed by peace and quiet pump a and supernatant
After conjunction, be fed again into peace and quiet tower a circulation handled to its it is up to standard after, it is subjected to blowdown from pollution discharge pond a；Peace and quiet tower
The slurry that the bottom b ejects is admitted in peace and quiet tower b and recycles after peace and quiet pump b is mixed with the supernatant in head tank
Handled to its it is up to standard after, it is subjected to blowdown from pollution discharge pond b, calcium carbide Slag treatment can be completed containing the useless of technical hydrochloric acid
Water；What is held in the aeration tower is the mixed solution of time sodium and sodium hydroxide；
Using device used in waste water of the calcium carbide Slag treatment containing technical hydrochloric acid in the above method, by concentration basin, slush pump, neutralization
Pond, waste slurry pump, pollution discharge pond, hydrochloric acid trough, nitrogen bath, peace and quiet tower a, peace and quiet tower b, peace and quiet pump a, peace and quiet pump b, supernatant liquid bath, a high position
Slot, pollution discharge pond a, pollution discharge pond b, blower, aeration tower, emptying slot, compressed air slot composition；Wherein, it is set on the left side wall of neutralization pond
Be equipped with acid tube, top is provided with tracheae and carbide slag slurries entrance, front side wall on be provided with sewage pipe and probe tube, concentration basin passes through
The pipe of diameter 133 is connected to slush pump, and slush pump is connected to by the pipe of diameter 159 with carbide slag slurries entrance, and tracheae is divided into and nitrogen bath
The entrance that is connected to by 57 pipe of diameter, the entrance being connected to by 57 pipe of diameter with compressed air slot and waste slurry pump pass through diameter 133
The entrance of pipe connection；Pollution discharge pond is connected to waste slurry pump by 133 pipe of diameter；Hydrochloric acid trough is connected to by the pipe of diameter 108 with acid tube；Row
Dirty pipe is connected to by the pipe of diameter 200 with the side peace and quiet tower a lower wall；It is managed with peace and quiet pump a wherein by diameter 159 bottom peace and quiet tower a
Another import of one inlet communication, peace and quiet pump a is connected to by the pipe of diameter 133 with supernatant liquid bath, the outlet warp of peace and quiet pump a
It crosses the pipe of diameter 89 to be connected to the side upper wall of peace and quiet tower a, and 159 Guan Shangshe of diameter between the bottom peace and quiet tower a and peace and quiet pump a
It is equipped with the switch being controllably connected to, and the other end switched is connected to pollution discharge pond a；It is managed by diameter 89 at the top of peace and quiet tower a
It is connected with the side lower wall of peace and quiet tower b；The bottom of peace and quiet tower b connects by the pipe of diameter 159 and one of import of peace and quiet pump b
Logical, another import of peace and quiet pump b be connected to by the pipe of diameter 133 with head tank, the outlet of peace and quiet pump b managed by diameter 89 and
The side upper wall of peace and quiet tower b is connected to, and is provided with controllable be connected on 159 pipe of diameter between the bottom peace and quiet tower b and peace and quiet pump b
Switch, and switch other end be connected to pollution discharge pond b；The top of peace and quiet tower b is connected to by the pipe of diameter 89 with blower, wind
Machine is connected to by the pipe of diameter 89 with aeration tower, is connected to by the pipe of diameter 219 with emptying slot at the top of aeration tower；
The neutralization pond is supported by pond case, front and back support tube, upper lower support bar, carbide slag slurries entrance, tracheae, acid tube, left and right
Bar, probe tube, sewage pipe, connector, liquid level pipe, bend pipe composition, wherein being provided with carbide slag slurries entrance, gas in pond box top
Pipe, is provided with probe tube on the case front side wall of pond and sewage pipe, the partition before and after the case of pond are provided with front and back support tube, and
Junction before and after the case of pond is airtight connection, is provided with left and right sidesing post between pond case or so wall, and is connected in pond case or so
The place of connecing is airtight connection, is provided with upper lower support bar between lower wall on the case of pond, and is closed company at the pond case place of being vertically connected with
Connect, offer liquid level hole on the case left side wall of pond, and liquid level hole is connected to by connector with liquid level pipe, in pond, case left side wall is leaned on
The inlet and outlet of acid tube is set at left and right sidesing post upper position, and acid tube is connected to form " U " by bend pipe in the case of pond
Type pipe, and hole is provided on acid tube and bend pipe.
2. utilizing method for waste water of the calcium carbide Slag treatment containing technical hydrochloric acid as described in claim 1, which is characterized in that described is mixed
Close solution, pH value 7-12.
3. utilizing method for waste water of the calcium carbide Slag treatment containing technical hydrochloric acid as described in claim 1, which is characterized in that described is clear
Net tower b, pressure environment therein are tiny structure environment.
4. utilizing method for waste water of the calcium carbide Slag treatment containing technical hydrochloric acid as claimed in claim 3, which is characterized in that described is micro-
Subnormal ambient is 0.01~0.03MPa smaller than the pressure of external environment.
5. utilizing method for waste water of the calcium carbide Slag treatment containing technical hydrochloric acid as described in claim 1, which is characterized in that time
Sodium, is the mixture of fresh secondary sodium, useless secondary two kinds of sodium, and mixed pH value is 7-8；The wherein effective chlorine quality of fresh secondary sodium
Percentage is 0.085-0.12%, and the effective chlorine mass percent in time sodium that gives up is≤0.02%.
6. utilizing method for waste water of the calcium carbide Slag treatment containing technical hydrochloric acid as described in claim 1, which is characterized in that described is clear
Net pump a is that the mixed material liquid of supernatant will be added to be sent to by peace and quiet tower a top of supply line progress spray process；It is described
Peace and quiet pump b, be the mixed material liquid of supernatant will be added to be sent to carry out at spray close to peace and quiet tower b top of supply line
Reason.
7. utilizing method for waste water of the calcium carbide Slag treatment containing technical hydrochloric acid as described in claim 1, which is characterized in that in described
And pond, it is made of neutralization pond a and neutralization pond b, neutralization pond a is identical with the structure of neutralization pond b.
8. utilizing method for waste water of the calcium carbide Slag treatment containing technical hydrochloric acid as described in claim 1, which is characterized in that the mud
The diameter 159 that stock pump is connected to carbide slag slurries entrance is managed, and offers the switch being controllably connected to, and the other end switched thereon
It is connected to sheet frame.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510916847.9A CN105461111B (en) | 2015-12-12 | 2015-12-12 | A kind of method for waste water and its device using calcium carbide Slag treatment containing technical hydrochloric acid |
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| CN201510916847.9A CN105461111B (en) | 2015-12-12 | 2015-12-12 | A kind of method for waste water and its device using calcium carbide Slag treatment containing technical hydrochloric acid |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1923700A (en) * | 2006-09-15 | 2007-03-07 | 游川北 | Method of producing calcium chloride from industrial waste carbide slag |
| CN101045546A (en) * | 2007-04-28 | 2007-10-03 | 沈阳化工股份有限公司 | Production method of calcium chloride snow melting agent |
| CN103011079A (en) * | 2012-12-20 | 2013-04-03 | 贵州开磷（集团）有限责任公司 | Method for treating waste carbide slag and waste hydrochloric acid |
| CN205204957U (en) * | 2015-12-12 | 2016-05-04 | 贵州开磷集团股份有限公司 | Utilize carbide slag to handle device that contains industry hydrochloric acid waste water |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1923700A (en) * | 2006-09-15 | 2007-03-07 | 游川北 | Method of producing calcium chloride from industrial waste carbide slag |
| CN101045546A (en) * | 2007-04-28 | 2007-10-03 | 沈阳化工股份有限公司 | Production method of calcium chloride snow melting agent |
| CN103011079A (en) * | 2012-12-20 | 2013-04-03 | 贵州开磷（集团）有限责任公司 | Method for treating waste carbide slag and waste hydrochloric acid |
| CN205204957U (en) * | 2015-12-12 | 2016-05-04 | 贵州开磷集团股份有限公司 | Utilize carbide slag to handle device that contains industry hydrochloric acid waste water |
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