CN209338311U - A kind of incineration of refuse flyash water washing treating system - Google Patents
A kind of incineration of refuse flyash water washing treating system Download PDFInfo
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- CN209338311U CN209338311U CN201821966562.1U CN201821966562U CN209338311U CN 209338311 U CN209338311 U CN 209338311U CN 201821966562 U CN201821966562 U CN 201821966562U CN 209338311 U CN209338311 U CN 209338311U
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Abstract
The utility model discloses a kind of incineration of refuse flyash water washing treating systems, comprising: for receiving washing premixing tank, one-stage water wash tank, Gravity Separation unit, level-one decalcification reactor, second level water washing tank, level-one flocculation basin, level-one machinery separative unit, the first secondary mechanical separative unit, second level flocculation basin, the second secondary mechanical separative unit, the second secondary mechanical separative unit and the flying dust jumbo bag of flying dust.The incineration of refuse flyash water washing treating system of the utility model, it solves existing flying dust washing process and reasonable plan, excessive using centrifuge is not provided to the processing of flying dust water lotion after washing, to the risk for introducing organic matter in water after not made full use of to the separating capacity of centrifuge, thering is consideration flocculant to be added, the problems such as addition of organic matter will lead to subsequent MVR and divide the purity decline of salt process salt and added amount of chemical big, and cost of disposal is 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 washing process systems
System.
Background technique
Incineration of refuse flyash be in municipal consumer waste incineration disposal process the trapping object of flue gas purification system and flue and
The bottom ash of chimney bottom sedimentation.Containing pollutants such as heavy metal, benzene homologues, dioxin in incineration of refuse flyash, arranged in China
For hazardous waste HW18.
Cement kiln synergic processing incineration of refuse flyash is to be added to manufacture of cement pretreated flying dust is passed through as raw material
In the process, instead of part of cement raw material while, the organic pollutants such as the dioxin being enriched in flying dust have been effectively removed, have been realized
The disposal of resources of flying dust.Due to containing a large amount of Cl in flying dust—And heavy metal element, in order to avoid to cement production process
It impacts, it is necessary to which it is pre-processed.Largely studies have shown that the method using water-washing pre-treatment can be effectively removed
Cl in flying dust—, avoid because of Cl—It is excessively high to cause system balling and putty etc..
Washing workshop section, haline water processing section, MVR+ Fen Yan workshop section can be divided into washing process.
Shanghai University's utility model a kind of water washing pretreatment method for making fly-ash from incineration harmless CN1947872A, this method are
Water washing flying dust at normal temperatures and pressures removes a large amount of leachable anion and part heavy metal ion in flying dust.Make its flying dust
Middle chlorine ions percent concentration drops to 1% hereinafter, simultaneously part washes out heavy metal.Washes uses carbonization-flocculant work
Skill, heavy metal concentration in washes and ss are down to discharge standard hereinafter, but this method be directed to specific operating method
And operating parameter, corresponding lectotype selection is not provided, and it is still necessary to the industries of suitable equipment completing technology route in engineer application
Change application, reasonable plan is not provided to the processing of flying dust water lotion after washing.
Guo Run Environmental Protection Technology Co., Ltd, BeiJing ZhongKe discloses a kind of washing melded system of incineration of refuse flyash
CN104843923A, the filtrate (liquid of first-stage centrifugal machine B successively with the first intermediate pool, the first reaction tank, the second reaction tank, de-
Calcium transfer tank, the connection of decalcification centrifuge, the cake outlet of decalcification centrifuge are connected to second level filtrate tank, the filtrate of decalcification centrifuge
Outlet successively with the second intermediate pool, water stabilization reaction tank, level-one stable regulation pond, two-stage stabilising conditioning tank, filtration system,
PH conditioning tank stablizes pond, MVR evaporator, clear water reserviors connection, and alkali liquor storage tank is anti-with the first intermediate pool, water stabilization respectively
Answer Chi Liantong, level-one, two-stage stabilising conditioning tank sludge outlet be connected to respectively with mud reservoir, mud reservoir by the road with level-one
Filtrate tank connection, but the program specifically includes that in 1. techniques there are problem and uses centrifuge excessive, to the separating capacity of centrifuge
Do not make full use of.2. not accounting for the risk for introducing organic matter in water after flocculant is added, the addition of organic matter be will lead to
Subsequent MVR divides the purity of salt process salt to decline.3. filter type is too simple coarse.4. not to the realization side of washing dechlorination effect
Method, operating parameter are illustrated, and a large amount of calcium constituent is contained in flying dust, and verified, water demineralization process medicament is thrown in this scheme
Dosage is big, and cost of disposal is high.
A kind of utility model garbage flying ash in Beijing Building Materials Science Research Institute Co's washes the circulation benefit of buck
With technique CN102020388A, which carries out suspended matter separation, removing heavy metals ion, deliming magnesium ion, filtering, mechanical compression
With multiple-effect evaporation step, the innovative point of technique is the removal of suspended matter, heavy metal ion, calcium ions and magnesium ions, but assists to cement kiln
With disposition flying dust always influence factor --- the removing process of chloride ion does not have further investigated and research, not to useless after dechlorination
The disposing technique of water proposes a plan.
To sum up, the existing generally existing following problems of flying dust washing process: 1. do not give the processing of flying dust water lotion after washing
Reasonable plan out；2. it is excessive using centrifuge, the separating capacity of centrifuge is not made full use of；Consider that flocculant is added 3. having
Afterwards to the risk for introducing organic matter in water, the addition of organic matter will lead to subsequent MVR and the purity of salt process salt divided to decline；4. medicament
Dosage is big, and cost of disposal is high.
Therefore, reasonable plan do not provided to the processing of flying dust water lotion after washing for existing flying dust washing process, used
Centrifuge is excessive, does not make full use of to the separating capacity of centrifuge, has and consider after flocculant is added to introducing organic matter in water
Risk, the addition of organic matter will lead to subsequent MVR divide salt process salt purity decline and added amount of chemical it is big, cost of disposal
The problems such as high, becomes those skilled in the art's technical problem urgently to be resolved.
Utility model content
The utility model is to solve existing flying dust washing process not provide reasonable side to the processing of flying dust water lotion after washing
It is case, excessive using centrifuge, the separating capacity of centrifuge is not made full use of, has and considers after flocculant is added to being introduced in water
The risk of organic matter, the addition of organic matter will lead to subsequent MVR and divide the purity decline of salt process salt and added amount of chemical big, place
It is set to the problems such as this is high, provides incineration of refuse flyash water washing treating system.
To achieve the above object, the utility model uses following technical scheme:
Provide a kind of incineration of refuse flyash water washing treating 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 receive from the one-stage water wash tank be discharged the first tubular type microstrainer in solution and flying dust washing water module and
The Gravity Separation unit of backwash liquid is discharged in second tubular type microstrainer, and the liquid phase that the Gravity Separation unit is isolated is by overflowing
Stream is discharged into level-one decalcification reactor, and the solid phase that the Gravity Separation unit is isolated is discharged into second level water washing tank, the second level washing
Tank receives the solution being discharged from surge tank；
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；
For receiving the level-one flocculation basin that solution is discharged from the level-one decalcification reactor and carries out flocculating setting to solution,
The level-one flocculation basin is connect with level-one PAM dosing storehouse；
For receiving the level-one machinery point that solution is discharged from the level-one flocculation basin and is separated by solid-liquid separation to the solution
From unit, the separated solid phase out of the level-one machinery separative unit is delivered to the second level water washing tank, the level-one machinery point
Liquid phase out separated from unit is delivered to the washing liquid pool of the flying dust in the flying dust washing water module；
For receiving the first second level machine that solution is discharged from the second level water washing tank and is separated by solid-liquid separation to the solution
Tool separative unit, the solid phase that the first secondary mechanical separative unit is isolated are discharged into flying dust jumbo bag, first secondary mechanical
The liquid phase that separative unit is isolated is delivered to the washing premixing tank；
For receiving the flying dust water lotion being discharged from flying dust washing liquid pool and carrying out decalcification to the flying dust water lotion
The second level decalcification reactor of stir process；
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 outflow solution, solution is discharged into the intermediate pool
The first tubular type microstrainer and the second tubular type microstrainer；
For receiving from the first tubular type microstrainer and the second tubular type microstrainer discharge solution and carrying out pH tune to solution
The clear water reserviors of section, the clear water reserviors are connect and with the first tubular type microstrainer and the second tubular type microstrainer to described by pipeline
First tubular type microstrainer and the second tubular type microstrainer are backwashed；
For receiving the activated carbon adsorption device that solution is discharged from the clear water reserviors and carries out granular absorption processing to solution；
For receiving the MVR feed cistern from activated carbon adsorption device discharge solution；And
For receiving the MVR evaporation for being discharged into solution from the MVR feed cistern and being evaporated crystallization treatment to the solution
Module, the separated water out of MVR evaporation module are discharged into the surge tank, the separated dense salt out of MVR evaporation module
Water is discharged into the MVR feed cistern.
It further, further include for receiving the second level flocculation for isolating liquid phase from the first secondary mechanical separative unit
Pond, the second level flocculation basin are connect with second level PAM dosing storehouse, and the solution of the second level flocculation basin discharge flows to the second secondary mechanical
Separative unit, after the second secondary mechanical separative unit is separated by solid-liquid separation the solution, separated solid phase conveying out
To the flying dust jumbo bag, the separated liquid phase out of the second secondary mechanical separative unit is delivered to the washing premixing tank.
Further, the surge tank receives the MVR evaporation module from supplement water module and the flying dust washing water module
The water of discharge.
Further, the lye in the pre- stirring pool of level-one lye is discharged into the level-one decalcification reactor by metering pump
Interior, the lye in the pre- stirring pool of second level lye is discharged into the second level decalcification reactor by metering pump.
Further, the level-one machinery separative unit, the first secondary mechanical separative unit and the second secondary mechanical point
It is mechanically decoupled unit from unit.
Further, the Gravity Separation unit is gravity separative unit or straight panel sedimentation basin.
Further, solution by chemical centrifugal pump is discharged into the first tubular type microstrainer and second in the intermediate pool
Tubular type microstrainer.
Further, the clear water reserviors are connect by pipeline with acid solution tank, and acid solution is arranged by metering pump in the acid solution tank
Enter the clear water reserviors.
Further, the Gravity Separation unit receives the first tubular type microstrainer described in the flying dust washing water module
With the counter-flushing liquid of the second tubular type microstrainer discharge.
The utility model by adopting the above technical scheme, compared with prior art, has the following technical effect that
(1) removal efficiency of chlorine element is high in flying dust, so that flying dust is reached cement kiln synergic processing and carries out recycling benefit
It is required that；
(2) removal effect of brackish water is good in aqueous flying dust after washing, villaumite removal efficiency >=90% in treated flying dust；
(3) mud-water separation is carried out using Gravity Separation unit and mechanically decoupled unit, energy consumption is lower than existing case and in the industry
Average level；
(4) the utility model can to flying dust wash after high-salt wastewater carry out except hardness, except suspended solid, except organic matter,
The effect of pH value is adjusted, effluent quality is preferable after the process, can be with long run supply MVR equipment use without easily causing
MVR stop cleaning, so that MVR continuous use duration can reach 3 months；
(5) the devices in system integrated level height of the utility model, high degree of automation, the automation charging of tubular type microfiltration equipment
And flushing, pH adjust automatic feedback, activated carbon adsorption is automatically switched etc..
Detailed description of the invention
Fig. 1 is the structural representation that flying dust washes water treating module in the utility model incineration of refuse flyash water washing treating system
Figure；
Fig. 2 is the structural schematic diagram of flying dust washing water module in the utility model incineration of refuse flyash water washing treating system；
Wherein, each appended drawing reference are as follows:
1- flying dust feed bin, 2- washing premixing tank, 3- Gravity Separation unit, 4- level-one decalcification reactor, 5- second level water washing tank,
The pre- stirring pool of 6- level-one lye, 7- level-one flocculation basin, 8- level-one PAM dosing storehouse, 9- level-one machinery separative unit, 10- flying dust water
Wash water module, 11- surge tank, 12- flying dust jumbo bag, 13- second level flocculation basin, 14- second level PAM dosing storehouse, the second secondary mechanical of 15-
Separative unit, 16- one-stage water wash tank, 17- supplement water module, and 18- flying dust washes liquid pool, 19- second level decalcification reactor, 20- bis-
The grade pre- stirring pool of lye, 21- intermediate pool, 22- the first tubular type microstrainer, 23- the second tubular type microstrainer, 24- clear water reserviors, 25-
Activated carbon adsorption device, 26-MVR feed cistern, 27-MVR evaporate module, 28- acid solution tank, 29- the first secondary mechanical separative unit.
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 Figs. 1-2, a kind of incineration of refuse flyash water washing treating system is present embodiments provided, comprising:
For receiving the flying dust exported from flying dust feed bin 1 and the washing premixing tank 2 for being pre-mixed the 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 first tubular type microstrainer 22 being discharged in solution and flying dust washing water module 10 from one-stage water wash tank 16
With the Gravity Separation unit 3 of the second tubular type microstrainer 23 discharge backwash liquid, the liquid phase that Gravity Separation unit 3 is isolated passes through
Overflow is discharged into level-one decalcification reactor 4, and the solid phase that Gravity Separation unit 3 is isolated is discharged into second level water washing tank 5, second level water washing tank 5
Receive the solution being discharged from surge tank 11；
The pre- stirring pool 6 of level-one lye for being stirred alkali solid and solvent in advance, the pre- stirring pool 6 of level-one lye stir
Lye is obtained after mixing flows into level-one decalcification reactor 4；
For receive from level-one decalcification reactor 4 be discharged solution and to solution carry out flocculating setting level-one flocculation basin 7, one
Grade flocculation basin 7 is connect with level-one PAM dosing storehouse 8；
For receiving the level-one machinery separative unit 9 that solution is discharged from level-one flocculation basin 7 and is separated by solid-liquid separation to solution,
Level-one machinery separative unit 9 it is separated go out solid phase be delivered to second level water washing tank 5, level-one machinery separative unit 9 it is separated go out
Liquid phase is delivered to the washing liquid pool 18 of the flying dust in flying dust washing water module 10；
For receiving the first secondary mechanical separation list that solution is discharged from second level water washing tank 5 and is separated by solid-liquid separation to solution
Member 29, the solid phase that the first secondary mechanical separative unit 29 is isolated is discharged into flying dust jumbo bag 12, the first secondary mechanical separative unit 29
The liquid phase isolated is delivered to washing premixing tank 2；
For receiving the flying dust water lotion being discharged from flying dust washing liquid pool 18 and carrying out decalcification stirring place to flying dust water lotion
The second level decalcification reactor 19 of reason；
The pre- stirring pool 20 of second level lye for being stirred alkali solid and solvent in advance, the pre- stirring pool 20 of second level lye
Lye is obtained after stirring flows into second level decalcification reactor 19；
For receiving the intermediate pool 21 for flowing out solution from second level decalcification reactor 19, solution is discharged into the in intermediate pool 21
One tubular type microstrainer 22 and the second tubular type microstrainer 23；
For receiving from the first tubular type microstrainer 22 and the second tubular type microstrainer 23 discharge solution and carrying out pH tune to solution
The clear water reserviors 24 of section, clear water reserviors 24 are connect and with the first tubular type microstrainer 22 and the second tubular type microstrainer 23 to first by pipeline
Tubular type microstrainer 22 and the second tubular type microstrainer 23 are backwashed；
For receiving the activated carbon adsorption device 25 that solution is discharged from clear water reserviors 24 and carries out granular absorption processing to solution；
For receiving the MVR feed cistern 26 that solution is discharged from activated carbon adsorption device 25；And
For receiving the MVR evaporation module 27 for being discharged into solution from MVR feed cistern 26 and being evaporated crystallization treatment to solution,
The separated water out of MVR evaporation module 27 is discharged into surge tank 11, and the separated strong brine out of MVR evaporation module 27 is discharged into MVR confession
Pond 26.
The one side of the present embodiment, as shown in Figure 1, further including being separated for receiving from the first secondary mechanical separative unit 29
The second level flocculation basin 13 of liquid phase out, second level flocculation basin 13 are connect with second level PAM dosing storehouse 14, the solution that second level flocculation basin 13 is discharged
The second secondary mechanical separative unit 15 is flowed to, it is separated after the second secondary mechanical separative unit 15 is separated by solid-liquid separation solution
Solid phase out is delivered to flying dust jumbo bag 12, and the separated liquid phase out of the second secondary mechanical separative unit 15 is delivered to washing premixing tank
2。
The one side of the present embodiment, as shown in Figs. 1-2, surge tank 11 are received from supplement water module 17 and flying dust washing water mould
MVR evaporates the water that module 27 is discharged in block 10.
The one side of the present embodiment, as shown in Figure 1, the lye in the pre- stirring pool 6 of level-one lye is discharged into one by metering pump
In grade decalcification reactor 4, the lye in the pre- stirring pool 20 of second level lye is discharged into second level decalcification reactor 19 by metering pump.
The one side of the present embodiment, as shown in Figure 1, level-one machinery separative unit 9, the first secondary mechanical separative unit 29 with
And second secondary mechanical separative unit 15 be mechanically decoupled unit.
The one side of the present embodiment, as shown in Figure 1, Gravity Separation unit 3 is gravity separative unit or straight panel sedimentation basin.
The one side of the present embodiment, as shown in Fig. 2, solution by chemical centrifugal pump is discharged into the first tubular type in intermediate pool 21
Microstrainer 22 and the second tubular type microstrainer 23.
The one side of the present embodiment, as shown in Fig. 2, clear water reserviors 24 are connect by pipeline with acid solution tank 28, in acid solution tank 28
Acid solution is discharged into clear water reserviors 7 by metering pump.
The one side of the present embodiment, as shown in Figs. 1-2, Gravity Separation unit 3 receive the from flying dust washing water module 10
The counter-flushing liquid of one tubular type microstrainer 22 and the discharge of the second tubular type microstrainer 23.
Embodiment 2
The present embodiment provides a kind of incineration of refuse flyash washing according to above-mentioned incineration of refuse flyash water washing treating system
Processing method, 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 pump with water；
Step 2: the liquid washed in premixing tank 2 is delivered in one-stage water wash tank 16 by pump, washing is sufficiently stirred,
And ratio of mud ratio is controlled in 3:1；
Step 3: by the liquid after having washed by 16 direct current of one-stage water wash tank to the middle part of Gravity Separation unit 3, gravity point
The counter-flushing liquid being discharged by flying dust washing water module 10 is also received simultaneously from unit 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, lower sediment falls into second level water washing tank 5；Saturation is added into the liquid of level-one decalcification blender 4 simultaneously
Sodium carbonate liquor carry out the coarse adjustment of first time hardness, liquid level-one decalcification blender 4 be sufficiently stirred reaction after by sludge pumping extremely
Level-one flocculation basin 7；
Step 5: adding PAM solution into the liquid of level-one flocculation basin 7, PAM solution concentration is 1-1.5g/L；
Step 6: solution level-one flocculation basin 7 flocculate after the completion of by pump by liquid be delivered to level-one machinery separative unit 9 into
Row is separated by solid-liquid separation；
Step 7: the solid phase that level-one machinery separative unit 9 is isolated puts into second level water pot 5, by the mechanically decoupled list of level-one
The liquid phase that member 9 is isolated is discharged into flying dust in flying dust washing water module 10 and washes liquid pool 18, and flying dust is washed the flying dust in liquid pool 18
Lye in water lotion and the pre- stirring pool 20 of second level lye is discharged into second level decalcification reactor 19；
Step 8: solution is after 19 decalcification stir process of second level decalcification reactor, by being set to second level decalcification reactor
The discharge outlet of 19 bottoms is discharged into intermediate pool 21；
Step 9: the solution in intermediate pool 21 is discharged into the first tubular type microstrainer 22 and the second tubular type microstrainer by pump
23；
Step 10: solution is discharged into clear water reserviors 24 by pumping by the first tubular type microstrainer 22 and the second tubular type microstrainer 23；
Step 11: the part solution in clear water reserviors 24 is by water pump to the first tubular type microstrainer 22 and the second tubular type micro-filtration
Device 23 is backwashed, while remaining solution in clear water reserviors 7 is discharged into activated carbon adsorption device 25 by pump；
Step 12: counter-flushing liquid is discharged into gravity point by pump by the first tubular type microstrainer 22 and the second tubular type microstrainer 23
From unit 3；
Step 13: solution is discharged into MVR feed cistern 26 after the processing of activated carbon adsorption device 25, through pump, MVR is supplied
After solution in pond 26 is discharged into the MVR evaporation progress Crystallization Separation of module 27, the separated water out of MVR evaporation module 27 is discharged into slow
Tank 11 is rushed, the separated strong brine out of MVR evaporation module 27 is discharged into MVR feed cistern 26, completes, carry out to this one-stage water wash technique
Second level washing process；
Step 14: second level water washing tank 5 will be consolidated from the received solution of surge tank 11 and from what level-one decalcification blender 4 was discharged
Phase mud cake is stirred cleaning；
Step 15: the liquid after having washed is discharged into the first secondary mechanical separative unit 29 by second level water washing tank 5, first
The solid phase that secondary mechanical separative unit 29 is isolated is discharged into flying dust jumbo bag 12, and the liquid phase isolated is discharged into second level flocculation basin 13；
Step 16: adding PAM solution into second level flocculation basin 13, PAM solution concentration is 1-1.5g/L；
Step 17: liquid is delivered to the second secondary mechanical by metering pump after the completion of second level flocculation basin 13 flocculates by solution
Separative unit 15 is separated by solid-liquid separation, and the solid phase that the second secondary mechanical separative unit 15 is isolated is discharged into flying dust jumbo bag 12, separation
Liquid phase out is discharged into washing premixing tank 2.
The one side of the present embodiment, the first tubular type microstrainer 22 and the second tubular type microstrainer 23 in step 11 replace work
Make.
The utility model embodiment provides flying dust Cl before and after by the utility model technique-、SO4 2-、Ca2+And Mg2+
The data comparison table of ion concentration, wherein the treating capacity of water is 0.5t/h, and the dosage of lye is 6.7kg/h, the acid that pH is adjusted
Liquid dosage is 4.1kg/h, using potentiometric titrimeter to Ca before and after technique2+And Mg2+Ion concentration is measured, using inductance coupling
It closes plasma emission spectrometer and measures Cl-And SO4 2-Ion concentration, table 1 are using chlorine in the flying dust of the utility model technique front and back
Content balance table, table 2 are flying dust water each ion concentration and pH value table before without the utility model technique, and table 3 is flying dust water
In ion concentration each after the utility model technique and pH value table.
Table 1
Table 2
Table 3
It should be clear from by the comparative analysis of data in table 1- table 3, using the flying dust after the utility model process
Middle various ion concentration declines significant effect, and pH value control is between 7-9.
The utility model for existing flying dust washing process not to the processing of flying dust water lotion after washing provide reasonable plan,
It is excessive using centrifuge, the separating capacity of centrifuge is not made full use of, have consider flocculant be added after in water introduce have
The risk of machine object, the addition of organic matter will lead to subsequent MVR and divide the purity decline of salt process salt and added amount of chemical big, disposition
The problems such as at high cost, the removal efficiency of chlorine element is high in the flying dust after the utility model process, and flying dust is enable to reach
The requirement of resource utilization is carried out to cement kiln synergic processing；The removal effect of brackish water is good in aqueous flying dust after washing, processing
Villaumite removal efficiency >=90% in flying dust afterwards；Mud-water separation is carried out using Gravity Separation unit and mechanically decoupled unit, low energy consumption
In existing case and average level in the industry；High-salt wastewater carries out except hardness, removes suspended solid, except organic after can washing to flying dust
Object, the effect for adjusting pH value；Effluent quality is preferable after processing, can be with long run supply MVR equipment use without easily causing MVR to stop
Machine cleaning, so that MVR continuous use duration can reach 3 months；Device integration height, high degree of automation, tubular type are micro- in technique
It filters equipment automatization charging and flushing, pH adjusts automatic feedback, activated carbon adsorption automatic switchover etc..
The specific embodiment of this practical incineration of refuse flyash water washing treating system is described in detail above, but it is only
It is as example, the utility model is not restricted to particular embodiments described above.To those skilled in the art, appoint
The equivalent modifications and substitution what carries out the utility model are also all among the scope of the utility model.Therefore, this is not being departed from
Made equal transformation and modification under the spirit and scope of utility model, should all cover in the scope of the utility model.
Claims (9)
1. a kind of incineration of refuse flyash water washing treating 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 first tubular type micro-filtration being discharged in solution and flying dust washing water module (10) from the one-stage water wash tank (16)
The Gravity Separation unit (3) of device (22) and the second tubular type microstrainer (23) discharge backwash liquid, the Gravity Separation unit (3)
The liquid phase isolated is discharged into level-one decalcification reactor (4) by overflow, and the solid phase that the Gravity Separation unit (3) is isolated is discharged into
Second level water washing tank (5), the second level water washing tank (5) receive the solution being discharged from surge tank (11)；
The pre- stirring pool of level-one lye (6) for being stirred alkali solid and solvent in advance, the pre- stirring pool of level-one lye
(6) lye is obtained after stirring flows into the level-one decalcification reactor (4)；
For receiving the level-one flocculation basin that solution is discharged from the level-one decalcification reactor (4) and carries out flocculating setting to solution
(7), the level-one flocculation basin (7) connect with level-one PAM dosing storehouse (8)；
Solution is discharged from the level-one flocculation basin (7) and the level-one that is separated by solid-liquid separation to the solution is mechanically decoupled for receiving
Unit (9), the separated solid phase out of the level-one machinery separative unit (9) are delivered to the second level water washing tank (5), the level-one
The separated liquid phase out of mechanically decoupled unit (9) is delivered to the washing liquid pool of the flying dust in the flying dust washing water module (10)
(18)；
For receiving the first secondary mechanical that solution is discharged from the second level water washing tank (5) and is separated by solid-liquid separation to the solution
Separative unit (29), the solid phase that the first secondary mechanical separative unit (29) is isolated are discharged into flying dust jumbo bag (12), and described
The liquid phase that one secondary mechanical separative unit (29) is isolated is delivered to the washing premixing tank (2)；
For receiving the flying dust water lotion being discharged from flying dust washing liquid pool (18) and carrying out decalcification to the flying dust water lotion
The second level decalcification reactor (19) of stir process；
The pre- stirring pool of second level lye (20) for being stirred alkali solid and solvent in advance, the pre- stirring pool of second level lye
(20) lye is obtained after stirring flows into the second level decalcification reactor (19)；
For receiving the intermediate pool (21) from the second level decalcification reactor (19) outflow solution, the intermediate pool (21) is interior
Solution is discharged into the first tubular type microstrainer (22) and the second tubular type microstrainer (23)；
For receiving from the first tubular type microstrainer (22) and the second tubular type microstrainer (23) discharge solution and being carried out to solution
The clear water reserviors (24) that pH is adjusted, the clear water reserviors (24) are micro- by pipeline and the first tubular type microstrainer (22) and the second tubular type
Filter (23) is connected and is backwashed to the first tubular type microstrainer (22) and the second tubular type microstrainer (23)；
For receiving the activated carbon adsorption device that solution is discharged from the clear water reserviors (24) and carries out granular absorption processing to solution
(25)；
For receiving the MVR feed cistern (26) from the activated carbon adsorption device (25) discharge solution；And
For receiving the MVR evaporation for being discharged into solution from the MVR feed cistern (26) and being evaporated crystallization treatment to the solution
Module (27), the separated water out of MVR evaporation module (27) are discharged into the surge tank (11), and the MVR evaporates module
(27) separated strong brine out is discharged into the MVR feed cistern (26).
2. incineration of refuse flyash water washing treating system according to claim 1, which is characterized in that further include for receive from
The first secondary mechanical separative unit (29) isolates the second level flocculation basin (13) of liquid phase, the second level flocculation basin (13) and two
Grade PAM dosing storehouse (14) connects, and the solution of second level flocculation basin (13) discharge flows to the second secondary mechanical separative unit (15),
After the second secondary mechanical separative unit (15) is separated by solid-liquid separation the solution, separated solid phase out is delivered to described
Flying dust jumbo bag (12), the separated liquid phase out of the second secondary mechanical separative unit (15) are delivered to the washing premixing tank
(2)。
3. incineration of refuse flyash water washing treating system according to claim 1, which is characterized in that the surge tank (11) connects
Receive the water that MVR evaporation module (27) is discharged from supplement water module (17) and the flying dust washing water module (10).
4. incineration of refuse flyash water washing treating system according to claim 1, which is characterized in that the level-one lye stirs in advance
The lye mixed in pond (6) is discharged into the level-one decalcification reactor (4) by metering pump, the pre- stirring pool of second level lye (20)
Interior lye is discharged into the second level decalcification reactor (19) by metering pump.
5. incineration of refuse flyash water washing treating system according to claim 1, which is characterized in that the level-one is mechanically decoupled
Unit (9), the first secondary mechanical separative unit (29) and the second secondary mechanical separative unit (15) are decanter centrifuge.
6. incineration of refuse flyash water washing treating system according to claim 1, which is characterized in that the Gravity Separation unit
It (3) is inclined-plate clarifying basin or straight panel sedimentation basin.
7. incineration of refuse flyash water washing treating system according to claim 1, which is characterized in that the intermediate pool (21)
Interior solution is discharged into the first tubular type microstrainer (22) and the second tubular type microstrainer (23) by chemical centrifugal pump.
8. incineration of refuse flyash water washing treating system according to claim 1, which is characterized in that the clear water reserviors (24) are logical
Piping is connect with acid solution tank (28), and the interior acid solution of the acid solution tank (28) is discharged into the clear water reserviors (24) by metering pump.
9. incineration of refuse flyash water washing treating system according to claim 1, which is characterized in that the Gravity Separation unit
(3) the first tubular type microstrainer (22) described in the flying dust washing water module (10) and the second tubular type microstrainer (23) row are received
Counter-flushing liquid out.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109368901A (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 washing treating system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109368901A (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 washing treating system and method |
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