CN209338269U - A kind of incineration of refuse flyash water lotion decalcification system - Google Patents
A kind of incineration of refuse flyash water lotion decalcification system Download PDFInfo
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- CN209338269U CN209338269U CN201821966546.2U CN201821966546U CN209338269U CN 209338269 U CN209338269 U CN 209338269U CN 201821966546 U CN201821966546 U CN 201821966546U CN 209338269 U CN209338269 U CN 209338269U
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Abstract
The utility model discloses a kind of incineration of refuse flyash water lotion decalcification systems, comprising: for receiving the washing premixing tank of flying dust；For receiving the one-stage water wash tank from washing premixing tank discharge solution；For receiving the sedimentation basin from one-stage water wash tank discharge solution；For receiving the level-one decalcification reactor from washing premixing tank overflow solution；For receiving the flocculation basin from level-one decalcification reactor discharge solution；For receiving the level-one solid-liquid separator from flocculation basin discharge solution；For receiving the second level decalcification reactor from flying dust washing liquid pool discharge solution.The system of the incineration of refuse flyash water lotion decalcification of the utility model, it solves equipment used in existing flying dust decalcification and processing pond is all more, it takes up a large area and cost of investment and operation cost is larger, have only carried out primary decalcification processing to solution, the problems such as treatment effect not exclusively and does not add the precipitating flocculation of PAM solution to solution, and heavy metal removing rate is not high.
Description
Technical field
The utility model relates to garbage flying ash processing technology field more particularly to a kind of incineration of refuse flyash water lotion decalcifications
System.
Background technique
Incineration of Household Refuse obtains Rapid Popularization application in recent years, however the consumer waste incineration of the generation produced
Flying dust afterwards is also growing day by day.Contain the venomous injurants such as a large amount of dioxin, heavy metal in flying dust.
Cement kiln synergic processing incineration of refuse flyash is the effective way of current disposition flying dust, but needs before flying dust enters kiln
Water-washing pre-treatment first is carried out to flying dust.Contain a large amount of chloride ion in flying dust, if the chlorine for not removing wherein most can shadow
The quality of Xiangshui County's mud.The method of removal high-concentration chlorine ion mainly washes flying dust at present, and washing can be removed effectively
Chloride ion in flying dust, chloride ion are transferred in liquid, then make it to processing such as the further decalcification of water lotion, filtering neutralizations
Reach MVR evaporation equipment enters water requirement, and due to also containing a large amount of calcium ions and magnesium ions in water lotion, the hardness in water reaches
20000mg/L is above in terms of calcium oxide, so also needing to carry out decalcification processing to water lotion.
State, BeiJing ZhongKe moisten the incineration of refuse flyash washing melded system CN204607794U that environmentally friendly Co., Ltd uses and
Incineration of refuse flyash washing softening process CN104803537A discloses a kind of waste incineration washing softening process, and flying dust is carried out
The polluters such as chloride ion and calcium ions and magnesium ions in the operations removal water lotion such as primary washing, centrifugation, decalcification, filtering；Its decalcification
Softening workshop section used three desk centrifuges to water lotion carry out decalcification separating treatment, used equipment and processing pond all compared with
It is more, it takes up a large area and cost of investment and operation cost is larger.The flying dust that Shanghai Jing Yu environmental project limited liability company uses
In washings processing technique and its special equipment CN107827303A in preprocessing process, alkali is added in first choice, controls the pH of waste water
It makes between 8~12, at this point, the metals such as lead, chromium, cadmium, copper, zinc, nickel, calcium, magnesium in waste water generate precipitating, precipitating sludge enters
Sludge treating system is handled；It has only carried out primary decalcification to solution to handle, treatment effect is not exclusively also to solution
The precipitating flocculation of PAM solution is added, heavy metal removing rate is not also high.
To sum up, the existing generally existing following problems of flying dust decalcification technique: equipment used in 1. and processing pond are all more,
It takes up a large area and cost of investment and operation cost is larger；2. having carried out primary decalcification to solution is handled, treatment effect is not
Completely；3. not adding the precipitating flocculation of PAM solution to solution, heavy metal removing rate is not high.
Therefore, for equipment used in existing flying dust decalcification and processing pond it is all more, take up a large area and invest at
This and operation cost are larger, have only carried out primary decalcification to solution is handled, and treatment effect not exclusively and does not add solution
The problems such as PAM solution precipitating flocculation, heavy metal removing rate is not high, become those skilled in the art's technical problem urgently to be resolved.
Utility model content
The utility model is to solve equipment used in existing flying dust decalcification and processing pond is all more, take up a large area and
Cost of investment and operation cost are larger, have only carried out primary decalcification to solution is handled, and treatment effect is not exclusively and to molten
The problems such as liquid adds the precipitating flocculation of PAM solution, and heavy metal removing rate is not high, provides incineration of refuse flyash water lotion decalcification system
System.
To achieve the above object, the utility model uses following technical scheme:
Provide a kind of incineration of refuse flyash water lotion decalcification system, comprising:
For receiving the flying dust exported from flying dust feed bin and the washing premixing tank for being pre-mixed the flying dust and water；
For receiving the one-stage water wash tank from the washing premixing tank discharge solution；
For receiving the sedimentation basin that solution is discharged from the one-stage water wash tank and is separated by solid-liquid separation to solution；
For receiving from the washing premixing tank overflow solution and being taken off to the level-one of solution progress decalcification stir process
Calcium reactor；
The pre- stirring pool of level-one lye for being stirred alkali solid and solvent in advance, the pre- stirring pool of level-one lye
Lye is obtained after stirring flows into the level-one decalcification reactor；
It is described for receiving the flocculation basin that solution is discharged from the level-one decalcification reactor and carries out flocculating setting to solution
Flocculation basin is connect with PAM dosing storehouse；
For receiving the level-one solid-liquid separator that solution is discharged from the flocculation basin and is separated by solid-liquid separation to the solution,
The separated solid phase out of the level-one solid-liquid separator is delivered to second level washing module, and the level-one solid-liquid separator is separated out
Liquid phase be delivered to flying dust washing liquid pool；
For receiving from flying dust washing liquid pool discharge solution and carrying out to the solution second level of decalcification stir process
Decalcification reactor；
The pre- stirring pool of second level lye for being stirred alkali solid and solvent in advance, the pre- stirring pool of second level lye
Lye is obtained after stirring flows into the second level decalcification reactor；
For receiving the intermediate pool from second level decalcification reactor discharge solution；And
For receiving the first filter and second that solution is discharged from the intermediate pool and is filtered processing to solution
Filter, the first filter and the second filter it is separated go out solid phase be delivered to the one-stage water wash tank, described first
Filter and the separated liquid phase out of the second filter are delivered to water treating module.
Further, the flying dust in the flying dust feed bin is delivered to the washing premixing tank by air pump, and the washing is pre-
Solution in mixed tank is delivered to the one-stage water wash tank by sludge pump and metering pump.
Further, the solution in the sedimentation basin is delivered to the level-one decalcification reactor, institute by way of overflow
It states in level-one decalcification reactor solution and the flocculation basin is delivered to by sludge pump.
Further, the solution in the flocculation basin is delivered to the level-one solid-liquid separator by metering pump.
Further, the solution in the second level decalcification reactor is delivered to the intermediate pool by sludge pump.
Further, the solution in the intermediate pool is delivered to the first filter and second by chemical centrifugal pump
Filter.
Further, the first filter and the separated solid phase out of the second filter are delivered to described by sludge pump
One-stage water wash tank.
The utility model by adopting the above technical scheme, compared with prior art, has the following technical effect that
Incineration of refuse flyash water lotion decalcification system provided by the utility model, is adding saturated sodium carbonate solution for the first time
PAM solution is added after decalcification again flocculate another to water lotion and carry out centrifugal filtration reduction equipment with a desk centrifuge and account for
Ground area has only used a desk centrifuge and has saved equipment cost and reduced power consumption；Technique uses second level decalcification, right for the first time
Water lotion hardness coarse adjustment for the second time again finely tunes water lotion, makes final liquid hardness control in 200ppm, added amount of chemical control
It is more accurate；Flying dust water lotion is drained into decalcification through mixing in the water of the precipitating and backwash filter that are filtered out again
The sedimentation basin of process section has reached the zero-emission of waste liquid.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model incineration of refuse flyash water lotion decalcification system；
Wherein, each appended drawing reference are as follows:
1- flying dust feed bin, 2- wash premixing tank, 3- sedimentation basin, 4- level-one decalcification reactor, 5- flocculation basin, 6-PAM dosing
Storehouse, 7- level-one solid-liquid separator, 8- second level washing module, 9- flying dust wash liquid pool, 10- second level decalcification reactor, 11- second level alkali
The pre- stirring pool of liquid, 12- intermediate pool, 13- first filter, the second filter of 14-, 15- water treating module, 16- one-stage water wash
Tank, the pre- stirring pool of 17- level-one lye.
Specific embodiment
The utility model is described in more detail below by specific embodiment, for a better understanding of this reality
With novel, but following embodiments are not intended to limit the scope of the utility model.
Embodiment 1
As shown in Figure 1, the utility model embodiment provides a kind of incineration of refuse flyash water lotion decalcification system, comprising:
For receiving the flying dust exported from flying dust feed bin 1 and the washing premixing tank 2 for being pre-mixed flying dust and water；
For receiving the one-stage water wash tank 16 that solution is discharged from washing premixing tank 2；
For receiving the sedimentation basin 3 that solution is discharged from one-stage water wash tank 16 and is separated by solid-liquid separation to solution；
For receiving from washing 2 overflow solution of premixing tank and carrying out to solution the level-one decalcification reactor of decalcification stir process
4；
The pre- stirring pool 17 of level-one lye for being stirred alkali solid and solvent in advance, the pre- stirring pool 17 of level-one lye
Lye is obtained after stirring flows into level-one decalcification reactor 4；
For receiving the flocculation basin 5 that solution is discharged from level-one decalcification reactor 4 and carries out flocculating setting to solution, flocculation basin
5 connect with PAM dosing storehouse 6；
For receiving the level-one solid-liquid separator 7 that solution is discharged from flocculation basin 5 and is separated by solid-liquid separation to solution, level-one is solid
The separated solid phase out of liquid/gas separator 7 is delivered to second level washing module 8, the separated liquid phase conveying out of level-one solid-liquid separator 7
Liquid pool 9 is washed to flying dust；
For receiving the second level decalcification reaction that solution is discharged from flying dust washing liquid pool 9 and carries out decalcification stir process to solution
Device 10；
The pre- stirring pool 11 of second level lye for being stirred alkali solid and solvent in advance, the pre- stirring pool 11 of second level lye
Lye is obtained after stirring flows into second level decalcification reactor 10；
For receiving the intermediate pool 12 that solution is discharged from second level decalcification reactor 10；And
For receiving the first filter 13 and second that solution is discharged from intermediate pool 12 and is filtered processing to solution
Filter 14, first filter 13 and the separated solid phase out of the second filter 14 are delivered to one-stage water wash tank 16, the first filtering
Device 13 and the separated liquid phase out of the second filter 14 are delivered to water treating module 15.
The one side of the present embodiment, as shown in Figure 1, the flying dust in flying dust feed bin 1 is delivered to washing premixing tank by air pump
2, the solution washed in premixing tank 2 is delivered to one-stage water wash tank 16 by sludge pump and metering pump.
The one side of the present embodiment takes off as shown in Figure 1, the solution in sedimentation basin 3 is delivered to level-one by way of overflow
Calcium reactor 4, solution is delivered to flocculation basin 5 by sludge pump in level-one decalcification reactor 4.
The one side of the present embodiment, as shown in Figure 1, the solution in flocculation basin 5 is delivered to level-one solid-liquid point by metering pump
From device 7.
The one side of the present embodiment, as shown in Figure 1, during solution in second level decalcification reactor 10 is delivered to by sludge pump
Between pond 12.
The one side of the present embodiment, as shown in Figure 1, the solution in intermediate pool 12 is delivered to first by chemical centrifugal pump
Filter 13 and the second filter 14.
The one side of the present embodiment, as shown in Figure 1, first filter 13 and the separated solid phase out of the second filter 14 are logical
It crosses sludge pump and is delivered to one-stage water wash tank 16.
Embodiment 2
The present embodiment provides a kind of incineration of refuse flyash washing according to above-mentioned incineration of refuse flyash water lotion decalcification system
The method of liquid decalcification, comprising the following steps:
It is pre-mixed Step 1: the flying dust in flying dust feed bin 1 is delivered to washing premixing tank 2 by air pump with water；
Step 2: the liquid washed in premixing tank 2 is delivered in one-stage water wash tank 16 by sludge pump and flowmeter pump,
Washing is sufficiently stirred；
Step 3: by the liquid after having washed by 16 direct current of one-stage water wash tank to the middle part of sedimentation basin 3；
Step 4: being delivered to sedimentation basin 3 after sufficiently precipitating, overflow is extremely above supernatant liquor autoprecipitation pond 3 by liquid
Level-one decalcification blender 4, while saturated sodium carbonate solution is added into the liquid of level-one decalcification blender 4 and carries out first time hardness
Coarse adjustment, liquid is after reaction is sufficiently stirred in level-one decalcification blender 4 by sludge pumping to flocculation basin 5；
Step 5: adding PAM solution into the liquid of flocculation basin 5；
It is carried out Step 6: liquid is delivered to level-one solid-liquid separator 7 by metering pump after the completion of flocculation basin 5 flocculates by liquid
Centrifugal dehydration；
Step 7: the mud cake that level-one solid-liquid separator 7 is isolated is entered second level washing module 8, level-one is separated by solid-liquid separation
Saturated carbon is added in the liquid into second level decalcification reactor 10 to second level decalcification reactor 10 in the liquid self-flowing that device 7 is isolated
Acid sodium solution, liquid by sludge pump are sent into intermediate pool being delivered to second level decalcification blender 10 after reaction is sufficiently stirred
12；
Step 8: liquid is sufficiently stirred in intermediate pool 12 by blender, suspended particulate substance in liquid is prevented
It is deposited on bottom of pond；
Step 9: the liquid after intermediate pool 12 is stirred is discharged into 13 He of first filter by chemical centrifugal pump
Second filter 14, after first filter 13 and the filtering of the second filter 14, liquid goes successively to water treating module 15, the
One filter 13 and the second filter 14 are delivered to sedimentation basin 3 by sludge pump again and are recycled after isolating solid phase and liquid phase mixing
Processing.
The one side of the present embodiment, control ratio of mud ratio is 3:1-5:1 in one-stage water wash tank 16 in step 2.
The one side of the present embodiment, in step 5 in the input amount and step 1 of PAM solution the input amount of flying dust quality
Than for 0.1-0.2Kg/t.
The utility model embodiment provides flying dust water by water intermediate ion concentration before and after the utility model decalcification technique
Data comparison table, wherein the treating capacity of water is 0.5t/h, and the dosage of lye is 6.7kg/h, and the acid solution dosage that pH is adjusted is
4.1kg/h, table 1 are flying dust water each ion concentration and pH value table before without the utility model decalcification technique, and table 2 is flying dust water
In each ion concentration and pH value table after the utility model decalcification technique.
Table 1
| Index | Ca2+ | Mg2+ |
| Zaozhuang flying dust water lotion | 1.9 ten thousand -2.0 ten thousand mg/L | 100mg/L |
Table 2
| Index | Ca2+ | Mg2+ |
| Zaozhuang flying dust water lotion | 1000mg/L or so | It does not measure |
It should be clear from by the comparative analysis of data in Tables 1 and 2, in the flying dust water after the utility model process
Ca2+And Mg2+Concentration declines significant effect.
The utility model is all more for equipment used in existing flying dust decalcification and processing pond, takes up a large area and throws
Money cost and operation cost are larger, have only carried out primary decalcification to solution is handled, and treatment effect is not exclusively and to solution
Add the precipitating flocculation of PAM solution, the problems such as heavy metal removing rate is not high, the utility model is to add saturated sodium carbonate for the first time molten
PAM solution is added after liquid decalcification again water lotion is carried out flocculating another and carries out centrifugal filtration reduction equipment with a desk centrifuge
Occupied area has only used a desk centrifuge and has saved equipment cost and reduced power consumption；Technique uses second level decalcification, for the first time
To water lotion hardness coarse adjustment, water lotion is finely tuned again for the second time, makes final liquid hardness control in 200ppm, added amount of chemical control
It makes more accurate；Flying dust water lotion the water of the precipitating and backwash filter that are filtered out mixed be drained into again it is de-
The sedimentation basin of calcium process section has reached the zero-emission of waste liquid.
The specific embodiment of the utility model incineration of refuse flyash water lotion decalcification system is described in detail above,
But it is merely an example, and the utility model is not restricted to particular embodiments described above.For those skilled in the art
For, the equivalent modifications and substitution that any pair of the utility model carries out are also all among the scope of the utility model.Therefore, not
It is detached from made equal transformation and modification under the spirit and scope of the utility model, should all be covered in the scope of the utility model
It is interior.
Claims (7)
1. a kind of incineration of refuse flyash water lotion decalcification system characterized by comprising
Washing premixing tank (2) for receiving the flying dust exported from flying dust feed bin (1) and being pre-mixed the flying dust and water；
For receiving the one-stage water wash tank (16) from washing premixing tank (2) the discharge solution；
For receiving the sedimentation basin (3) that solution is discharged from the one-stage water wash tank (16) and is separated by solid-liquid separation to solution；
For receiving from washing premixing tank (2) overflow solution and carrying out to the solution level-one decalcification of decalcification stir process
Reactor (4)；
The pre- stirring pool of level-one lye (17) for being stirred alkali solid and solvent in advance, the pre- stirring pool of level-one lye
(17) lye is obtained after stirring flows into the level-one decalcification reactor (4)；
For receiving the flocculation basin (5) that solution is discharged from the level-one decalcification reactor (4) and carries out flocculating setting to solution, institute
Flocculation basin (5) is stated to connect with PAM dosing storehouse (6)；
For receiving the level-one solid-liquid separator that solution is discharged from the flocculation basin (5) and is separated by solid-liquid separation to the solution
(7), the separated solid phase out of the level-one solid-liquid separator (7) is delivered to second level washing module (8), and the level-one is separated by solid-liquid separation
The separated liquid phase out of device (7) is delivered to flying dust washing liquid pool (9)；
For receiving from flying dust washing liquid pool (9) discharge solution and being taken off to the second level of solution progress decalcification stir process
Calcium reactor (10)；
The pre- stirring pool of second level lye (11) for being stirred alkali solid and solvent in advance, the pre- stirring pool of second level lye
(11) lye is obtained after stirring flows into the second level decalcification reactor (10)；
For receiving the intermediate pool (12) from the second level decalcification reactor (10) discharge solution；And
For receive from the intermediate pool (12) be discharged solution and to solution be filtered processing first filter (13) and
Second filter (14), the first filter (13) and the separated solid phase out of the second filter (14) are delivered to the level-one
Water washing tank (16), the first filter (13) and the separated liquid phase out of the second filter (14) are delivered to water treating module
(15)。
2. incineration of refuse flyash water lotion decalcification system according to claim 1, which is characterized in that the flying dust feed bin
(1) flying dust in is delivered to the washing premixing tank (2) by air pump, and the solution in washing premixing tank (2) passes through sludge
Pump and metering pump are delivered to the one-stage water wash tank (16).
3. incineration of refuse flyash water lotion decalcification system according to claim 1, which is characterized in that the sedimentation basin (3)
Interior solution is delivered to the level-one decalcification reactor (4), the interior solution of the level-one decalcification reactor (4) by way of overflow
The flocculation basin (5) are delivered to by sludge pump.
4. incineration of refuse flyash water lotion decalcification system according to claim 1, which is characterized in that the flocculation basin (5)
Interior solution is delivered to the level-one solid-liquid separator (7) by metering pump.
5. incineration of refuse flyash water lotion decalcification system according to claim 1, which is characterized in that the second level decalcification is anti-
The solution in device (10) is answered to be delivered to the intermediate pool (12) by sludge pump.
6. incineration of refuse flyash water lotion decalcification system according to claim 1, which is characterized in that the intermediate pool
(12) solution in is delivered to the first filter (13) and the second filter (14) by chemical centrifugal pump.
7. incineration of refuse flyash water lotion decalcification system according to claim 1, which is characterized in that the first filter
(13) and the separated solid phase out of the second filter (14) is delivered to the one-stage water wash tank (16) by sludge pump.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109368866A (en) * | 2018-11-27 | 2019-02-22 | 上海电气集团股份有限公司 | A kind of incineration of refuse flyash water lotion decalcification system and decalcification method |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109368866A (en) * | 2018-11-27 | 2019-02-22 | 上海电气集团股份有限公司 | A kind of incineration of refuse flyash water lotion decalcification system and decalcification method |
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