CN109942112A - A kind of recycling and processing equipment of ardealite storage yard percolate and its processing method - Google Patents
A kind of recycling and processing equipment of ardealite storage yard percolate and its processing method Download PDFInfo
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Abstract
The present invention provides a kind of recycling and processing equipment of ardealite storage yard percolate and its processing method, processing unit includes sequentially connected pretreatment system, hyperfiltration treatment system, RO processing system.Phosphorus fluorine resource in percolate effectively can be carried out concentrate recycling by the present invention, it produces water energy and is enough back to industrial water, reduce the cost of production water intaking, system does not generate or is greatly reduced the generation of sludge, system producing water water quality stablizes reuse, operating cost is significantly lower than conventional method, and system is easily managed and operates.
Description
Technical field
The invention belongs to technical field of waste water processing, relate in particular to a kind of ardealite storage yard percolate resource utilization
Utilize the processing unit and method of technology.
Background technique
Ardealite be in phosphoric acid production with sulfuric acid treating phosphorite when the solid slag that generates, main component is sulfuric acid
Calcium.Institute's fluoride, free phosphoric acid, P in ardealite2O5, the impurity such as phosphate be that ardealite is caused to cause ring during stockpiling
The principal element of border pollution.Land resource has not only been occupied in a large amount of stockpilings of ardealite, but also since wind erosion, weathering cause
The pollution of atmosphere, water system and soil.Contact ardealite for a long time, may cause the death or lesion of people.Ardealite landfill or
Since rainwater effect can generate percolate during banking up, phosphorus, fluorine content are very high in percolate, and pH is very low.Once penetrating into ground
After lower, the waste of a large amount of phosphorus fluorine resource is not only caused, but also seriously pollutes neighbouring underground water and surface water resources, near
Basin and resident living all cause influence very serious.If can be carried out effective Treatment for Reuse, to prevention and cure of pollution, economy
The various aspects such as benefit, sustainable development are of great significance to.
Most of technique of ardealite percolate processing at present selection following methods:
Neutralization precipitation method: neutralization precipitation is carried out using quick lime, is finally obtained using calcium phosphate and calcirm-fluoride as main component
Waste residue.The shortcomings that the method, is that there are many amount for the quick lime that the phosphorus fluorine of high-content results in the need for, and the quantity of slag of generation is also very much,
Not only reagent cost is high, but also under with the mode of slag fixed output quota, the serious survival and development for affecting enterprise.
Closed circulation utilization method: using being mixed with production system sewage, into ball mill, wet milling is carried out, mine is made
Slurry, then reacts through extraction tank, into filtration system, filtered ardealite is transported to ardealite storage yard, makes ardealite heap
The shortcomings that field filtrate closed circulation utilization, the method, is the continuous accumulation of impurity content in ardealite, the effective mass of ore pulp
Concentration can have a greatly reduced quality, can not effective long-term continuous operation, and filtered ardealite still remains and generates pollution
Problem.
Summary of the invention
The one kind provided it is an object of the invention to overcome disadvantages mentioned above can effectively by phosphorus fluorine resource in percolate into
Row concentrate recycles, and produces water energy and is enough back to industrial water, reduce the cost of production water intaking, system does not generate or significantly subtracts
The generation of few sludge, system producing water water quality stablize reuse, and operating cost is significantly lower than conventional method, system be easily managed and
Operation is fully able to realize the recycling and processing equipment and its processing method of a kind of ardealite storage yard percolate of automation control.
The object of the invention and its technical problem underlying is solved using following methods to realize:
A kind of recycling and processing equipment of ardealite storage yard percolate includes sequentially connected pretreatment system, hyperfiltration treatment system
System, RO processing system；The pretreatment system includes sequentially connected coagulation reaction tank, intermediate pool；At the ultrafiltration
Reason system includes sequentially connected effective filter, heat-exchanger rig, self-cleaning filter device, ultrafiltration apparatus, ultrafiltration pond；Institute
The RO processing system stated includes sequentially connected security personnel's filter device one, level-one RO device, level-one RO production pond, level-one RO concentrated water
Pond, cartridge filter device two, second level RO device, second level RO produce pond, second level RO concentrated water pond, removal bitter and fishiness；
Intermediate pool in the pretreatment system enters the high efficiency filter of hyperfiltration treatment system by ultrafiltration elevator pump
In device；
The ultrafiltration pond enters security personnel's filter device one by level-one RO intake pump, the water outlet for filter device one of ensuring public security
Enter level-one RO device by the pressurization of high-pressure pump one；The NF concentrated water reuse of the level-one RO device is into production process of phosphoric acid, institute
The production water for the level-one RO device stated enters level-one RO and produces pond, adjusts the PH for producing water, controls between 7-8；The level-one RO
It produces pond and security personnel's filter device two is entered by second level RO intake pump, the water outlet of security personnel's filter device two is pressurizeed by high-pressure pump two
Enter second level RO after into the processing of second level RO device and produces pond；Locate again in concentrate recirculation to the ultrafiltration pond of the second level RO device
Reason, the production water of the second level RO device enter reuse after removal bitter and fishiness processing；
A kind of recycling and processing equipment of ardealite storage yard percolate further includes regeneration water system, the regeneration water system packet
Recycled water collecting pit is included, it is described for collecting the backwash water of effective filter and the backwash water and concentrated water of ultrafiltration apparatus
Recycled water collecting pit enters coagulation reaction tank reprocessing by recycled water elevator pump.
The recycling and processing equipment of above-mentioned a kind of ardealite storage yard percolate, wherein the pretreatment system further includes dirt
Mud processing unit is collected the sludge in coagulation reaction tank, is transported outward after processing.
The recycling and processing equipment of above-mentioned a kind of ardealite storage yard percolate, wherein the coagulation reaction tank is leaned in bottom of pond
It is provided with diving mixer at nearly pool wall, is continuously stirred.
The recycling and processing equipment of above-mentioned a kind of ardealite storage yard percolate, wherein the coagulation reaction tank passes through addition
Can specifically there are the coagulant and flocculant of preferable treatment effect under the conditions of PH < 3, coagulant is modified sepia polymerization
Aluminium chloride, flocculant are that cationic polyacrylamide of the molecular weight 1000 or so, coagulant and flocculant pass through with just
It is close to each other with negative (just) electrical some particles for being difficult to separate or particle in the group and water of (negative) electrical property, reduce it
Potential is at unstable state, and using its aggregation property these particles is concentrated, and makes tiny outstanding in acid percolate
Floating object or colloidal particles, which adsorb mutually, to be combined into larger particles and precipitates.
A kind of recycling and processing equipment of above-mentioned ardealite storage yard percolate, wherein the ultrafiltration system by pressurization and
Under the action of miillpore filter, further particle tiny in the acid percolate of retention, colloid, bacterium, heat source and organic matter are thin, protect
Card enters the water quality of level-one RO device；The filtering material of effective filter is selected acidproof smokeless in the ultrafiltration system
Coal, shell filtrate, foam filter pearl, granular activated carbon, fiber filtering etc.；The ultrafiltration membrane choosing of ultrafiltration apparatus in the ultrafiltration system
Used in PH < 3 energy acidproof acetate fiber or cellulose nitrate or the mixture of this two is made or PS membrane, polysulfonamides
Film and polyacrylonitrile film etc..
The recycling and processing equipment of above-mentioned a kind of ardealite storage yard percolate, wherein the level-one RO device passes through high-pressure pump
One pressurized treatments, after raw water is concentrated reuse into production process, produce water enter level-one RO produce pond by adjust PH 7-8 it
Between enter second level RO device and handle, the concentrate recirculation of second level RO device to ultrafiltration pond is reprocessed, and is produced water and is entered removal bitter and fishiness
Reuse after processing.
A kind of recycling and processing equipment of above-mentioned ardealite storage yard percolate, in which: the level-one RO device and second level RO
The RO film of device is special acidproof anti-pollution reverse osmosis membrane；The level-one RO operating pressure between 1.3-2.2MPa,
Second level RO operating pressure is between 0.3-1.0MPa.
A kind of processing method of the reuse of ardealite storage yard percolate of the invention, comprising the following steps:
(1) pre-process: the pretreatment of the ardealite storage yard percolate is by after dosing coagulant and flocculant reaction
It adsorbs fine suspension or colloidal particles mutually to be combined into larger particles and precipitate, supernatant enters
Intermediate pool, sludge are transported outward after entering sludge treatment equipment processing, and the coagulant is modified sepia aluminium polychloride,
Flocculant is cationic polyacrylamide of the molecular weight 1000 or so；
(2) hyperfiltration treatment: intermediate pool is discharged into through the promotion of ultrafiltration elevator pump and adds cationic polyacrylamide and hypochlorous acid
Enter to effective filter that oil removal, organic matter, bacterium, to reduce the indexs such as turbidity laggard after the fungicide such as sodium or isothiazoline
Enter heat-exchanger rig heat exchange, turbidity is then further decreased by self-cleaning filter device, meets it and enter ultrafiltration technology water quality
It is required that；Self-cleaning filter device retains subparticle substance, and ultrafiltration membrane is avoided to be blocked or scratched by large particulate matter；Self-cleaning
Filter device, which is discharged, enters ultrafiltration membrane, removal SS, colloid and most of bacterium, ultra-filtration water turbidity < 0.2NTU, produces water behind SDI < 3
It is collected to ultrafiltration pond；
(3) RO is handled: ultrafiltration, which produces, adds phosphorous small molecule or organic matter height after pond clear water is promoted by level-one RO intake pump
The reducing agents such as the antisludging agent and sodium hydrogensulfite or sodium thiosulfate of molecule linear polymer or dendritic successively lead to
It is concentrated after crossing security personnel's filter device one, high-pressure pump one into level-one RO device；Level-one RO device concentrated water recycles；Level-one RO
Device fresh water enter level-one RO produce pond pass through again adjust PH after through second level RO promotion after add antisludging agent pass sequentially through security personnel filter
Entering second level RO device after device two, high-pressure pump two and carries out desalination, second level RO device concentrated water returns to ultrafiltration production pond and reprocesses, and two
Grade RO device fresh water enters reuse after removal bitter and fishiness processing；
(4) reused water processing: high efficiency particulate air filter backwash water, hyperfiltration reverse-rinsing water and concentrated water enter recycled water collecting pit through regenerating
Water elevator pump is lifted into coagulation reaction tank reprocessing.
The present invention compared with the existing technology has clear advantage and beneficial effect.From the above technical scheme, this hair
Bright have the advantage that pre-processes ardealite storage yard percolate, ensure that the stabilization of water quality；Phosphorus fluorine content in percolate
Height is handled by level-one RO, and effectively the content of phosphorus fluorine is concentrated, and reaches the requirement of production reuse, effective to recycle
Phosphorus fluorine resource, avoids pollution；It is acid strong in percolate, enter second level RO processing by adjusting PH, it can either be effectively into one
Step removes level-one RO and produces the phosphorus fluorine content of water, and produces and meet desalted water needed for production, improves the utilization rate of water, keeps away
Secondary pollution is exempted from；Ultrafiltration apparatus, RO processing unit are full-automatic control equipment, convenient for operation and maintenance；A whole set of processing system
Occupied area is small, with low investment, and operating cost is low；It can guarantee the water outlet of efficient stable.
Detailed description of the invention
Fig. 1 is process flow chart of the invention；
Specific embodiment
Technical solution of the present invention is clearly and completely described with reference to the accompanying drawing.
As shown in Figure 1, a kind of recycling and processing equipment of above-mentioned ardealite storage yard percolate, including pretreatment system, ultrafiltration
Processing system, RO processing system, regeneration water system；The pretreatment system includes sequentially connected coagulation reaction tank, centre
Pond；The hyperfiltration treatment system includes sequentially connected effective filter, heat-exchanger rig, self-cleaning filter device, surpasses
Filter device, ultrafiltration pond；The RO processing system includes sequentially connected security personnel's filter device one, level-one RO device, level-one
RO produces pond, cartridge filter device two, second level RO device, second level RO production pond, removal bitter and fishiness；The regeneration water system
Including recycled water collecting pit；The pretreatment system also individually includes sludge treatment equipment.
Diving mixer is provided in the coagulation reaction tank to continuously stir；Sludge in the coagulation reaction tank into
It is transported outward after entering sludge treatment equipment processing, the intermediate pool in the pretreatment system is entered at ultrafiltration by ultrafiltration elevator pump
In the effective filter of reason system.
The ultrafiltration pond enters security personnel's filter device one by level-one RO intake pump, the water outlet for filter device one of ensuring public security
Enter level-one RO device by the pressurization of high-pressure pump one.
Into production process of phosphoric acid, the production water of the level-one RO device enters the NF concentrated water reuse of the level-one RO device
Level-one RO produces pond, adjusts the PH for producing water, controls between 7-8.
The level-one RO produces pond and enters security personnel's filter device two by second level RO intake pump, security personnel's filter device two
Water outlet enters second level RO after handling by the pressurization of high-pressure pump two into second level RO device and produces pond.
The concentrate recirculation of the second level RO device to ultrafiltration pond is reprocessed, and the production water of the second level RO device enters
Reuse after removal bitter and fishiness processing.
The recycled water collecting pit of the regeneration water system collects effective filter backwash water and ultrafiltration apparatus backwash water
And after concentrated water, coagulation reaction tank reprocessing is entered by recycled water elevator pump.
The coagulation reaction tank makes fine suspension or colloid in acid percolate by the way that coagulant and flocculant is added
Particle, which adsorbs mutually, to be combined into larger particles and precipitates.The effect that the ultrafiltration system passes through pressurization and miillpore filter
Under, further particle tiny in the acid percolate of retention, colloid, bacterium, heat source and organic matter are thin, guarantee that entering level-one RO fills
The water quality set.The level-one RO device is by one pressurized treatments of high-pressure pump, and reuse produces water into production process after raw water is concentrated
Is produced from pond into level-one RO and enters the processing of second level RO device between 7-8 by adjusting PH, and the concentrate recirculation of second level RO device is extremely
Ultrafiltration pond reprocessing produces water and enters reuse after removal bitter and fishiness processing.The coagulant and flocculant of the coagulation reaction tank
There is the special medicament of better effects under the conditions of PH is 1-3.The RO film of the level-one RO device and second level RO device is spy
The acidproof anti-pollution reverse osmosis membrane of system.
As shown in Figure 1, a kind of process for reclaiming of ardealite storage yard percolate is the pre- place of ardealite storage yard percolate
Reason is by making fine suspension or colloidal particles in acid percolate adsorb knot mutually after dosing coagulant and flocculant reaction
Conjunction precipitates into larger particles, and supernatant enters intermediate pool, and sludge is transported outward after entering sludge treatment equipment processing.
Intermediate pool is discharged into enter to effective filter except outstanding after the promotion of ultrafiltration elevator pump adds flocculant and fungicide
Enter heat-exchanger rig after the indexs such as floating object, organic matter, bacterium, reduction turbidity to exchange heat, then passes through self-cleaning filter device into one
Step reduces turbidity, meets it and enters ultrafiltration technology water quality requirement.Self-cleaning filter device retains subparticle substance, avoids surpassing
Filter membrane is blocked or is scratched by large particulate matter；Self-cleaning filter device water outlet enters ultrafiltration membrane, and removal SS, colloid and major part are thin
Bacterium, ultra-filtration water turbidity < 0.2NTU produce water behind SDI < 3 and are collected to ultrafiltration pond；Ultrafiltration produces pond clear water and passes through level-one RO intake pump
Add antisludging agent after promotion and reducing agent pass sequentially through enter after security personnel's filter device one, high-pressure pump one level-one RO device carry out it is dense
Contracting.Level-one RO device concentrated water recycles.Level-one RO device fresh water enter level-one RO produce pond pass through again adjust PH after through second level
RO, which is added after being promoted after antisludging agent passes sequentially through security personnel's filter device two, high-pressure pump two, enters the progress desalination of second level RO device, second level
RO device concentrated water returns to ultrafiltration and produces pond reprocessing, and second level RO device fresh water enters reuse after removal bitter and fishiness processing；
High efficiency particulate air filter backwash water, hyperfiltration reverse-rinsing water and concentrated water enter recycled water collecting pit through recycled water elevator pump promoted into
Enter coagulation reaction tank reprocessing.
The major control point for the treatment of method is coagulant and RO when flocculant dosage, change of water quality in pretreatment system
Processing system pressure and producing water ratio, level-one RO produce the control of pond PH: 1, at flood season, when raw water suspended matter sharply increases (>
5000mg/L), the dosage of on-line control coagulant and flocculant is needed, guarantees effluent quality clarification；When dry season, raw water water
Matter in order, can reduce or stop dosing；2, when flood season, phosphorus fluorine content is lower in water, when entering RO system, needs to adjust
Pressure and concentrated water flow guarantee producing water ratio and concentrated effect, and between 1.3-2.2MPa, second level RO pressure exists level-one RO pressure
Between 0.3-1.0MPa；3, when dry season, raw water PH is relatively low in acidity, and level-one RO, which produces the liquid alkaline amount that pond adds, to be increased, and protects
Card enters the PH of second level RO processing system between 7-8.
Inlet and outlet water water quality table
| Index | pH | Total phosphorus mg/L | Fluoride mg/L | Conductivity μ S/cm |
| Water inlet | 1~3 | ≤4000 | ≤600 | ≤9000 |
| Water outlet | 7~8 | ≤0.5 | ≤10 | ≤60 |
The above described is only a preferred embodiment of the present invention, being not intended to limit the present invention in any form, appoint
What is to the above embodiments according to the technical essence of the invention any simply to repair without departing from technical solution of the present invention content
Change, equivalent variations and modification, all of which are still within the scope of the technical scheme of the invention.
Claims (7)
1. a kind of recycling and processing equipment of ardealite storage yard percolate, which is characterized in that including sequentially connected pretreatment system,
Hyperfiltration treatment system, RO processing system；The pretreatment system includes sequentially connected coagulation reaction tank, intermediate pool；Institute
The hyperfiltration treatment system stated include sequentially connected effective filter, heat-exchanger rig, self-cleaning filter device, ultrafiltration apparatus,
Ultrafiltration pond；The RO processing system includes sequentially connected security personnel's filter device one, level-one RO device, level-one RO production water
Pond, level-one RO concentrated water pond, cartridge filter device two, second level RO device, second level RO produce pond, second level RO concentrated water pond, desalted water
Device；
Intermediate pool in the pretreatment system enters the effective filter of hyperfiltration treatment system by ultrafiltration elevator pump
In；
The ultrafiltration pond enters security personnel's filter device one by level-one RO intake pump, and the water outlet of security personnel's filter device one passes through
The pressurization of high-pressure pump one enters level-one RO device；The NF concentrated water reuse of the level-one RO device is described into production process of phosphoric acid
The production water of level-one RO device enters level-one RO and produces pond, adjusts the PH for producing water, controls between 7-8；The level-one RO produces water
Pond enters security personnel's filter device two by second level RO intake pump, and the water outlet of security personnel's filter device two is entered by the pressurization of high-pressure pump two
Enter second level RO after the processing of second level RO device and produces pond；The concentrate recirculation of the second level RO device to ultrafiltration pond is reprocessed,
The production water of the second level RO device enters reuse after removal bitter and fishiness processing；
A kind of recycling and processing equipment of ardealite storage yard percolate further includes regeneration water system, the regeneration water system
It is described for collecting the backwash water of effective filter and the backwash water and concentrated water of ultrafiltration apparatus including recycled water collecting pit
Recycled water collecting pit by recycled water elevator pump enter coagulation reaction tank reprocessing.
2. a kind of recycling and processing equipment of ardealite storage yard percolate according to claim 1, which is characterized in that described
Pretreatment system further includes sludge treatment equipment, collects the sludge in coagulation reaction tank, transports outward after processing.
3. a kind of recycling and processing equipment of ardealite storage yard percolate according to claim 1, which is characterized in that described
Diving mixer is provided in coagulation reaction tank to continuously stir.
4. a kind of recycling and processing equipment of ardealite storage yard percolate according to claim 1, which is characterized in that described
Coagulation reaction tank can specifically have the coagulant and flocculant of preferable treatment effect by being added under the conditions of PH < 3, pass through band
There are some particles for being difficult to separate for having positive negative electrical property in positive/negative electrical group and water or particle close to each other, reduces
Its potential is at unstable state, and using its aggregation property these particles is concentrated, and makes tiny in acid percolate
Suspended matter or colloidal particles, which adsorb mutually, to be combined into larger particles and precipitates.
5. a kind of recycling and processing equipment of ardealite storage yard percolate according to claim 1, which is characterized in that described
The filtering material of effective filter selects acidproof anthracite, shell filtrate, foam filter pearl, seed activity in ultrafiltration system
Charcoal, fiber filtering；The ultrafiltration membrane of ultrafiltration apparatus is selected in PH < 3 energy acidproof acetate fiber or nitre in the ultrafiltration system
Sour fiber or this both mixture be made or PS membrane, Polysulfonamide and polyacrylonitrile film.
6. a kind of recycling and processing equipment of ardealite storage yard percolate according to claim 1, which is characterized in that described
The RO film of level-one RO device and second level RO device is special acidproof anti-pollution reverse osmosis membrane；The level-one RO operating pressure
Between 1.3-2.2MPa, second level RO operating pressure is between 0.3-1.0MPa.
7. a kind of processing method of the recycling and processing equipment of ardealite storage yard percolate according to claim 1, feature
It is, comprising the following steps:
(1) pre-process: the pretreatment of the ardealite storage yard percolate is by making acid after dosing coagulant and flocculant reaction
Fine suspension or colloidal particles, which adsorb mutually, in property percolate is combined into larger particles and precipitates, and supernatant enters centre
Pond, sludge are transported outward after entering sludge treatment equipment processing；
(2) it hyperfiltration treatment: is discharged into intermediate pool and is filled after the promotion of ultrafiltration elevator pump adds flocculant and fungicide to high efficiency filter
Enter heat-exchanger rig heat exchange after being placed in the indexs such as oil removal, organic matter, bacterium, reduction turbidity, then passes through self-cleaning filtering
Device further decreases turbidity, meets it and enters ultrafiltration technology water quality requirement；Self-cleaning filter device retains fine particle
Matter avoids ultrafiltration membrane from being blocked or scratched by large particulate matter；Self-cleaning filter device water outlet enters ultrafiltration membrane, removes SS, colloid
And most of bacterium, ultra-filtration water turbidity < 0.2NTU produce water behind SDI < 3 and are collected to ultrafiltration pond；
(3) RO is handled: ultrafiltration production pond clear water adds antisludging agent after being promoted by level-one RO intake pump and reducing agent passes sequentially through guarantor
Enter level-one RO device after peace filter device one, high-pressure pump one to be concentrated；Level-one RO device concentrated water recycles；Level-one RO device
Fresh water enter level-one RO produce pond pass through again adjust PH after through second level RO promotion after add antisludging agent pass sequentially through security personnel filter device
Two, enter second level RO device after high-pressure pump two and carry out desalination, second level RO device concentrated water returns to ultrafiltration and produces pond reprocessing, second level RO
Device fresh water enters reuse after removal bitter and fishiness processing；
(4) reused water processing: high efficiency particulate air filter backwash water, hyperfiltration reverse-rinsing water and concentrated water enter recycled water collecting pit and mention through recycled water
It rises pump and is lifted into coagulation reaction tank reprocessing.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115057586A (en) * | 2022-06-24 | 2022-09-16 | 上海康恒环境股份有限公司 | Leachate treatment system and control method thereof |
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