CN107758916A - A kind of modularization integrated technology process suitable for acid wastewater in mine processing - Google Patents
A kind of modularization integrated technology process suitable for acid wastewater in mine processing Download PDFInfo
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/007—Modular design
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The present invention relates to a kind of modularization integrated technology process suitable for acid wastewater in mine processing, it is characterised in that：For high concentration acid wastewater in mine, progress technique integrates and Parametric designing, is made up of 4 modules：One-level pretreatment module, two level materialization module, three-level chemical module and level Four advanced treating module, wherein one-level pretreatment module set Grid screen and balancing tank, remove oil removal and regulating pondage；Two level materialization module sets diffusion dialysis device and PZX reactors, waste acid recovery and heavy-metal ion removal；Three-level chemical module sets mixed reaction pond, primary sedimentation basin, coagulation reaction tank and secondary response pond, removes remaining heavy metal ion；Level Four advanced treating module sets active sand filter and absorbent charcoal adsorption tank, removes SS and colourity.According to influent quality condition, selection operation different units.Present invention process has the characteristics that flexible, efficient, convenient, intelligent, can ensure waste water disposal facility economy, operation effectively, stable.
Description
Technical field
It is more particularly to a kind of to be applied to mine acidity the present invention relates to a kind of high concentrated organic wastewater integrated approach technology
The modularization integrated technique of wastewater treatment, for bargh in recovery process the problem of caused high concentration wastewater treatment,
Carry out that technique is integrated and Parametric designing, realize technical module, intellectuality, integrated.
Background technology
During national economy constantly increases, society constantly advances and living standards of the people improve constantly, ore deposit
Production resource serves very important effect.However, due to unreasonable exploitation unordered to mineral resources for a long time, a system of induction
Serious Environmental Problems in Mines is arranged also to should not be underestimated.Acid wastewater in mine is exactly one of them.Acid wastewater in mine is because of its acidity
Greatly, while also containing heavy metal ion such as copper, lead, zinc, cadmiums, so the influence to environment is very big.Once waste water flows directly into
Natural stream networks and then remittance region water system, can be caused greatly to downstream resident living, the ecological environment for producing and its depending on for existence
Influence and harm.Acid wastewater in mine is already known to one of most primary environment problem that current mining industry is faced.
According to incompletely statistics, China's Nonferrous Enterprises in 2007 produce 10 kinds of non-ferrous metals and amount to 2360.52 ten thousand tons altogether.
In non-ferrous metals industry from mining, ore dressing to smelting, so that in the whole production process of finished product processing, nearly all process will
With water, there is discharge of wastewater.It is different according to wastewater source, product and processing object, mining wastewater, beneficiation wastewater, smelting can be divided into
Refine waste water, processing waste water.Smelting wastewater can be divided into heavy non-ferrous metal smelting waste water, light non-ferrous metal smelting wastewater, rare color again
Metal smelt waste water.It can also be divided into acid waste water, alkalescence by contained pollutant main component, non-ferrous metal metallurgy waste water in waste water
Waste water, heavy metal wastewater thereby, cyanide wastewater, fluoride waste, waste water containing oils and containing radioactive wastewater etc..Non-ferrous metals industry waste water
Caused by pollute mainly and have inorganic solid suspension pollution, the pollution of organic aerobic substance, heavy metal pollution, Petroleum concentration, alcohol
Pollution, alkali pollution, thermal pollution etc..
During mining, substantial amounts of mine wastewater can be produced, including pit water, waste-rock yard leaching water, choosing
Ore deposit waste water and tailing pit waste water etc..Wherein, liquid wastes that are main and influenceing maximum derive from acid wastewater in mine.Mine
Acid waste water occurs mainly with barren rock stockyard and pit.The acid waste water water quality in barren rock stockyard by barren rock composition, hillock it is several
What shape, rainfall intensity and influence for lasting the factors such as length, temperature, microorganism；The water quality of pit acid waste water, water are because of hole
Road geographical position, absolute altitude, surrounding rock structure, mining operations method, precipitation etc. are different and different.Acid wastewater in mine has as follows
Feature：1. ion containing various metals, pH value is more 2.5-4.5；2. wastewater flow rate is big, time of flow length；3. drainage point disperses, water
Matter and water fluctuation are big.
Undressed acid wastewater in mine is expelled directly out, and can cause water pollution.First, waste water has high acid
Degree, meeting corrosion pipeline and equipment, reduce its service life, increase maintenance cost, improve producing cost.Heavy metal in water from
Son can make the poisonings such as fish, planktonic organism, algae and mortality.Fe in water2+Fe is generated through peroxidation3+, Fe3+With reference to
OH-Produce Fe (OH)3Reddish-brown precipitation so that red is presented in water bottom and two sides, influences attractive in appearance.In addition, human body is long-term
Acid mine water is contacted, skin can be corroded, causes trick cracking etc., influences human body health.Undressed Acid mine
After waste water discharge, into surface water body, when this part water is used for irrigating with farmland, soil texture can be destroyed so that soil hardening,
Suppress the growth of crops, the death of crops large area can be caused when serious, causes grain drop in production.
Mainly there are chemical treatment, physical treatment and biological treatment etc. to mine acid wastewater processing method both at home and abroad at present, its
In the most frequently used process mainly include neutralisation, microbial method, artificial swamp method and embrane method etc..
Neutralisation is the most frequently used processing method, and this method is that nertralizer is put into waste water, make heavy metal in waste water from
Son generation hydroxide precipitation is separated from water, and waste water is reached discharge standard.Typically using lime stone or lime as nertralizer
Carry out neutralisation treatment.But neutralisation is of problems to be, neutralisation needs to add substantial amounts of nertralizer, and not only operating cost is high,
Substantial amounts of toxic waste residue can be above all produced, the intractability of waste residue is big, and cost is high, is also easy to produce secondary pollution, and
Also make pipeline and the easy fouling of equipment, shorten service life.
Microbial method is the most frequently used method for treating water of sanitary sewage, but because microorganism will to conditions such as pH value, temperature
Ask higher, therefore, be still in the laboratory research stage using microbiological treatment acid wastewater in mine, be not used widely.
Artificial wet land system has that construction cost and operating cost are low, energy consumption is low, simple to operate, adaptable etc. excellent
Point.If suitable plant variety is selected to also have the effect beautified the environment.However, because acid wastewater in mine contains an a large amount of huge sum of moneys
Belong to element, and pH value is relatively low, therefore has considerable influence to plant growth, and artificial wet land system there is floor space compared with
Greatly, the problems such as affected by environment big, wetland maintenance cost is higher, therefore using limited in acid wastewater in mine processing.
Membrane separation technique has widely been studied and explored in field of industrial waste water treatment as a kind of new and high technology, due to
The features such as its separative efficiency is high, without phase transformation, energy-conserving and environment-protective, equipment simple, easy to operate, it is set to have in water treatment field suitable
Technical advantage, it has also become one of indispensable technology in water treatment field.But not pretreated acid wastewater in mine
In the heavy metal ion that contains accelerate the consumption of film, shorten the service life of film, substantially increase water process expense.
In summary, acid wastewater in mine contains substantial amounts of heavy metal ion and sulfuric acid due to its special water quality characteristics
Radical ion, biodegradability is poor, is not easy to degrade, the country there is no particularly effective processing method can realize simultaneously it is efficient, cheap,
It is safe and easy to operate.Also, contain recyclable acids in acid wastewater in mine, all can not be by this in current processing method
Partially acidic recycling reclaims.
In order to solve the above problems, the present invention proposes a kind of effective treating method to acid wastewater in mine.The present invention intends
Waste water is handled using physico-chemical process, because single physical technology, chemical technology can not be realized in production waste water
The efficient removal of high-concentration organic matter, therefore, technique proposed by the present invention are organically to be combined physics with chemical technology, jointly
Operation.
The content of the invention
The present invention is more particularly directed to a kind of modularization integrated technology process suitable for acid wastewater in mine processing, for mine
In process of production the problem of caused high concentration wastewater treatment, progress technique integrates and Parametric designing, realizes technical module
Change, be intelligent, integrated.
According to the characteristics of production waste water, and the requirement of waste water treatment process, adhere to technology maturation it is reliable, it is stable,
Maintenance management is convenient and economic and practical principle, acid wastewater in mine handling process is optimized integrated, and develops a set of
It is applicable the operation method of difference water quality.
Acid wastewater in mine integrated technology method involved in the present invention is made up of 4 modules, and it is pre- to be respectively designated as one-level
Processing module, two level materialization module, three-level chemical module, level Four advanced treating module.
The one-level pretreatment module includes Grid screen, balancing tank.Grid screen is set, to remove the suspension in water removal,
To ensure subsequent treatment facility energy normal operation, grid grit number uses 10 mesh；Balancing tank is set, is regulating pondage, is ensured
The inflow of subsequent treatment facility is stable, and hydraulic detention time is 12.0 ~ 24.0h.
The two level materialization module includes diffusion dialysis device and PZX reactors（Expanded vermiculite ion exchange adsorption reaction
Device）.Diffusion dialysis device, according to water quality index intermittent duty, Con trolling index is used as using monitoring water inlet pH value：As pH ＜ 4.0, fortune
Row diffusion dialysis device, the recovery of spent acid is realized, and mitigate sour load for subsequent treatment facility；As pH >=4.0, waste water surmounts
Diffusion dialysis device, is directly entered PZX reactors, and PZX reactors are continuous operation.
The diffusion dialysis device is to do motive force with concentration difference, whole device by diffusion dialysis film, fluid proportion plate, reinforcing plate,
Liquid stream sheet frame is formed by combining, and the construction unit of varying number is made up of a number of film；Wherein each unit is by Yi Zhangyin
Ion homogeneous membrane separates into dialysing compartment（A）And diffuser casing（B）, the both sides of anion homogeneous membrane each lead into acid pickle and acceptable solution
（Pure water or running water）When, the free acid of acid pickle side and its concentration of salt are far above the side of water.Due to depositing for concentration gradient
, the trend of the oriented B rooms infiltration of free acid and its esters in spent acid, but film has selective penetrated property, and it will not allow every kind of
Ion is passed through with equal opportunity.Anionic membrane skeleton itself is positively charged first, has attract negatively charged aquation in the solution
Ion and the characteristic for repelling positively charged ion hydration, therefore in the presence of concentration difference, the anion of spent acid side are attracted and suitable
Enter the side of water through fenestra road sharply.Required simultaneously according to electroneutral, positively charged ion can be also carried secretly, due to H+'s
Hydrated radius is smaller, and electric charge is less；It is high price again, therefore H+ can preferentially lead to and the ion hydration radius of metal salt is larger
Cross film, the acid in such waste water will be separated.
The PZX reactors, complete entitled expanded vermiculite ion exchange adsorption reaction device, it is that expansion leech is filled with inside one kind
The ion exchange adsorption reaction device of stone, using finished product PZX fillers as main reaction unit.Finished product PZX fillers by housing, filler and
Strengthening agent etc. forms, and specific practice is as follows：Housing uses finished product polyether polyester shell, and housing is shaped as rectangle, length and width
It is consistent with the length and width of equipment, 1.0-1.5m is highly used according to design load, square surface is netted, is to pass through polyether polyester
Extruding spinneret is processed as filament, and filament is overlapping in mould, accumulates, knot, is cooled into, mesh size 5mm.Xiang Cheng
Product polyether polyester enclosure fills expanded vermiculite, a diameter of 7 ± 1mm of expanded vermiculite.Reinforcing will be integrally immersed in after filling
In agent, strengthening agent uses carbon dust and 10% polytetrafluoroethylene (PTFE) mixed liquor, soaks 30 minutes and takes out in strengthening agent, natural air drying 3
After hour, soak 15 minutes again, natural air drying is after 3 hours, soaks 5 minutes again, and natural air drying 24 hours is stand-by.Will shaping
Finished product PZX fillers be directly placed in PZX reactors, the thickness of packing layer is 1.0-1.5m, equipment design upward flow flow velocity
For 15-20m/h.In addition to filler, PZX reactors also include water distribution system, water inlet pipe, outlet pipe and the overflow that bottom is set
Pipe.
The three-level chemical module includes mixed reaction pond, primary sedimentation basin, coagulation reaction tank, secondary sedimentation tank.
Mixed reaction pond, continuous operation, feeding lime, poly 4 vinyl pyridine, polymethylacrylic acid diformazan ammonia into pond
Base ethyl ester, Sodium Polyacrylate and polyethyleneimine etc., excess metal cation in neutralization precipitation waste water.Wherein, lime is used to go
Except all metal cation and sulfate ion, it is heavy that poly 4 vinyl pyridine is used to promote Cr the and Cd ions in waste water to accelerate
Form sediment, polymethylacrylic acid dimethylaminoethyl is used to promote the As ions in waste water to accelerate precipitation, and Sodium Polyacrylate is used to promote
Pb and Zn ions in waste water accelerate precipitation, and polyethyleneimine is used to accelerate regulation pH for alkalescence.Reaction tank designs the residence time
30min, using Corrosion Protection of Fiber Reinforced Plastics material, inside sets acidproof agitator.Feeding lime, poly 4 vinyl pyridine, poly- methyl-prop
The mass ratio of olefin(e) acid dimethylaminoethyl, Sodium Polyacrylate and polyethyleneimine is 1：0.01:0.005:0.02:0.05, its
In, Lime-Injecting amount determines according to pH value in mixed reaction pond, that is, works as pH<When 8.5, continuously add, adding mass concentration is
30-35mg/L, when pH value >=8.5, stop adding.
Primary sedimentation basin, continuous operation, using horizontal sedimentation tank, sediment caused by mixed reaction pond is subjected to solid-liquid point
From.The reaction tank design residence time is 3h, and inside sets electronic scraping and sucking machine.
Coagulation reaction tank, intermittent duty, monitoring water inlet metal ion water prime number value, when concentration of heavy metal ion is exceeded,
Work as Cr>0.5 mg/L or Cu>1.0mg/L or Pb>1.0mg/L or Zn>4.0mg/L or Cd>0.1 mg/L or As>0.5 mg/L
When, coagulation reaction tank is run, adds aluminium polychloride, reaction tank design residence time 30min, inside sets acidproof agitator.
Secondary sedimentation tank, intermittent duty is synchronous with coagulation reaction tank, and sediment caused by coagulation reaction tank is carried out into solid-liquid point
From.The reaction tank design residence time is 2.5h, and inside sets electronic scraping and sucking machine.
The level Four advanced treating module includes active sand filter and absorbent charcoal adsorption tank, and both connect.
The active sand filter, sewage after precipitation is further realized into mud-water separation, ensure that water outlet SS is up to standard.According to water inlet
Whether SS values are up to standard, determine running status, that is, work as SS>Startup optimization during 100mg/L.Design average rate of filtering is 6m/h.
The absorbent charcoal adsorption tank is to utilize physical absorption, chemisorbed, oxidation, catalysis oxidation and reduction of activated carbon etc.
Performance removes the method for treating water of water pollutant, is one of current main method for removing colourity.Due to containing in mine wastewater
There is substantial amounts of Fe3+Ion, therefore may have color in waste discharge, cause sense organ uncomfortable, therefore, charcoal absorption list is set
Member, when chromaticity index in influent quality>When 50, start absorbent charcoal adsorption tank, under design to stream flow velocity be 5-7m/h.
Acid wastewater in mine integrated technology method involved in the present invention is made up of 4 modules, and it is pre- to be respectively designated as one-level
Processing module, two level materialization module, three-level chemical module, level Four advanced treating module.During actual motion, it is arranged in water inlet end
Line monitoring system, by collecting, analyzing to the water quality information for carrying out raw water, result is exported to automatic control system, by controlling automatically
System processed sends signal to submodule unit, to control the automatic operating of integrated artistic.
The one-level pretreatment module includes Grid screen and balancing tank, and the Grid screen import connects acid wastewater in mine
Entrance, outlet connect the balancing tank import；The balancing tank outlet connects the two level materialization module inlet；
The two level materialization module includes diffusion dialysis device and PZX reactors, and the diffusion dialysis device import connects the one-level
Pretreatment module exports, and outlet connects the PZX reactors；The PZX reactor outlets connect the three-level chemical module and entered
Mouthful；
Further, electrically operated valve is set before the diffusion dialysis device import, opened and closed according to process control operations；The electricity
Movable valve entrance connects the one-level pretreatment module outlet；Outlet connects the PZX reactor inlets；
The three-level chemical module includes mixed reaction pond, primary sedimentation basin, coagulation reaction tank, secondary sedimentation tank, the mixing
Reaction tank import connects the two level materialization module outlet, and outlet connects the primary sedimentation basin；The primary sedimentation basin outlet
Connect the coagulation reaction tank；The coagulation reaction tank outlet connects the secondary sedimentation tank；The secondary sedimentation tank outlet connects
Connect the level Four advanced treating module；
Further, electrically operated valve is set before the coagulation reaction tank import, opened and closed according to process control operations；The electricity
Movable valve entrance connects the primary sedimentation basin outlet；Outlet connects the level Four advanced treating module inlet；
The level Four advanced treatment unit includes active sand filter and absorbent charcoal adsorption tank, the active sand filter entrance connection institute
The outlet of three-level chemical module is stated, outlet is connected to the absorbent charcoal adsorption tank；The absorbent charcoal adsorption tank is connected to water process system
System general export；
Further, electrically operated valve is set before the active sand filter import, opened and closed according to process control operations；The electricity
Movable valve entrance connects the active sand filter entrance；The outlet connection active sand filter outlet；
Further, electrically operated valve is set before the absorbent charcoal adsorption tank import, opened and closed according to process control operations；It is described
Electrically operated valve entrance connects the absorbent charcoal adsorption tank entrance；Outlet connects the absorbent charcoal adsorption tank outlet.
The present invention is applied to acid wastewater in mine integrated technology process for one kind, is to use said system, including following step
Suddenly：
Step 1, startup optimization one-level pretreatment module, acid wastewater in mine is introduced into Grid screen and removes oil removal, is removed outstanding
The waste water of float enters regulating pondage in balancing tank；
Step 2, on-line monitoring analyze the acid wastewater in mine pH value in balancing tank, work as pH value<When 4.0, into step 3,
Otherwise step 4 is entered；
Step 3, startup optimization diffusion dialysis device, reclaim the acid in waste water；
Step 4, start PZX reactors, waste water is handled；
Step 5, starts mixed reaction pond, feeding lime, poly 4 vinyl pyridine, polymethylacrylic acid dimethylaminoethyl, poly-
PAA and polyethyleneimine, stirring, monitor mixed reaction pond pH value of waste water on-line；When pH value is 8.5, stop dosing；
Start primary sedimentation basin, precipitation spoil disposal is carried out to waste water；
Step 6, monitor concentration of metal ions in primary sedimentation basin on-line, when concentration of metal ions reaches Effluent criteria, that is, work as Cr
<0.5 mg/L、Cu<1.0mg/L、Pb<1.0mg/L、Zn<4.0mg/L、Cd<0.1 mg/L、As<During 0.5 mg/L, into step
Eight, otherwise into step 7；
Step 7, start coagulation reaction tank, add aluminium polychloride, stir, monitor mixed reaction pond waste water metal ions on-line
Concentration；When up to standard, stop dosing；Start secondary sedimentation tank, precipitation spoil disposal is carried out to waste water；
Step 8, active sand filter entrance SS values are monitored on-line, when SS values>When 100, into step 9, otherwise into step 10；
Step 9, start active sand filter, filtration treatment is carried out to waste water；
Step 10, monitor absorbent charcoal adsorption tank entrance chromatic value on-line, work as chromatic value>When 50, into step 11, otherwise directly
Chinese effluent；
Step 11, start absorbent charcoal adsorption tank, adsorption treatment is carried out to waste water.
The present invention relates to a kind of modularization integrated technology process suitable for acid wastewater in mine processing, there is following technology
Feature：
1st, suitable for acid small-sized, scattered mine acidity field waste water strong, heavy metal ion content is high, complicated component and fluctuation are big
Processing；
2nd, technique uses multiple unit cascades, automatically controls conversion process by changing equipment operational factor, saves and account for
Cost is saved while ground area；
3rd, main process task technique uses PZX reactors, and it has good cation exchange and adsorptivity, except can be by waste water
Heavy metal cation cements out, and reduces outside wastewater toxicity, moreover it is possible to improve the pH value of waste water.And sludge is not produced, is reduced high
The generation of concentration industrial sludge, processing sludge expense is reduced, reduces pollution；
4th, diffusion dialysis unit is used before main process task technique, intermittent duty is carried out according to waste water quality, recyclable spent acid, improved useless
Water process resource utilization rate, wastewater treatment expense is compensated, produce income；
5th, the process combination degree of modularity is high, and it is integrated equipment to be advantageous to technical transform, saves space；Process combination technology is first
Enter, stably reaching standard.
Brief description of the drawings
Fig. 1 is present invention process route map.Fig. 2 is computer programme flow diagram of the present invention.Fig. 3 reacts for PZX in the present invention
Device schematic diagram.
1st, online water quality monitoring system；2nd, one-level pretreatment module；3rd, two level materialization module；4th, three-level chemical module；5、
Level Four advanced treating module；6th, computer automatic control system.
A. Grid screen；B. balancing tank；C. diffusion dialysis device；D. PZX reactors；E mixed reaction ponds；F is once
Sedimentation basin；G coagulation reaction tanks；H secondary sedimentation tanks；I activity sand filters；J absorbent charcoal adsorption tanks
--- --- --- -- process line；--- signal input and output
（1）Equipment main tank body；（2）Finished filler shell；（3）Expanded vermiculite filler；（4）Strengthening agent；（5）Water inlet water distribution system；
（6）Water inlet pipe；（7）Outlet pipe；（8）Overflow pipe
Embodiment
Water inlet end set on-line monitoring system, by come raw water water quality information collect, analysis, by result export to
Automatic control system, signal is sent from automatic control system to individual module or submodule unit, to control the automatic of integrated artistic
Change operation.
Sewage is introduced into one-level pretreatment module, and it includes 2 units altogether, is that Grid screen unit and balancing tank are single respectively
Member, both are continuous operation, and grid grit number uses 10 mesh；Balancing tank unit, hydraulic detention time are 12.0 ~ 24.0h.
Two level materialization module, including diffusion dialysis unit and PZX reactor units, series operation.Diffusion dialysis unit,
Have a rest operation, when water inlet pH value<When 4.0, start, for reclaiming the spent acid in waste water；PZX reactor units, continuous operation, design
Upward flow flow velocity is 15-20m/h.
Three-level chemical module, including four lists such as mixed reaction pond, primary sedimentation basin, coagulation reaction tank, secondary sedimentation tank
Member.Mixing reactor and primary sedimentation basin are continuously run, coagulation reaction tank and secondary sedimentation tank intermittent duty, i.e., when a water inlet huge sum of money
Startup optimization when category ion is exceeded.
Level Four advanced treating module, including active sand biofilter unit and activated carbon adsorption unit.Active sand biofilter unit,
Have a rest operation, according to water inlet SS values, work as SS>Startup optimization during 100mg/L, design average rate of filtering are 6m/h.Activated carbon adsorption unit,
Intermittent duty, when chromaticity index in influent quality>When 50, start absorbent charcoal adsorption tank, be to stream flow velocity under absorbent charcoal adsorption tank
5-7m/h。
[embodiment one]
Certain acid wastewater in mine, Inlet and outlet water water quality are shown in Table 1.
The water quality index of certain acid wastewater in mine of table 1
| Project | Unit | Water inlet index | Effluent index | Project | Unit | Water inlet index | Effluent index |
| PH value | 2—3 | 6—9 | Cr | mg/L | 0.5 | 0.5 | |
| Cu | mg/L | 7.5 | 1.0 | SS | mg/L | 50 | 200 |
| Pb | mg/L | 5.3 | 1.0 | SO4 2- | mg/L | 5000 | — |
| Zn | mg/L | 100 | 4.0 | Fe2+ | mg/L | 150 | — |
| Cd | mg/L | 1.0 | 0.1 | Fe3+ | mg/L | 500 | — |
| As | mg/L | 1.5 | 0.5 |
Found using present invention process, during operation, the unit of startup optimization includes one-level pretreatment unit, two level materialization unit
Diffusion dialysis unit and PZX reactor units, the mixed reaction pond and primary sedimentation basin of three-level chemical unit, level Four advanced treating
The activated carbon adsorption unit of module.Effluent index entirely reaches design requirement.
[embodiment two]
Certain acid wastewater in mine, Inlet and outlet water water quality are shown in Table 2.
The water quality index of certain acid wastewater in mine of table 2
| Project | Unit | Water inlet index | Effluent index | Project | Unit | Water inlet index | Effluent index |
| PH value | 4—5 | 6—9 | Cr | mg/L | 0.5 | 0.5 | |
| Cu | mg/L | 28.0 | 1.0 | SS | mg/L | 100 | 100 |
| Pb | mg/L | 0.1 | 1.0 | SO4 2- | mg/L | 2500 | — |
| Zn | mg/L | 78.5 | 4.0 | Fe2+ | mg/L | 25 | — |
| Cd | mg/L | 0.1 | 0.1 | Fe3+ | mg/L | 50 | — |
| As | mg/L | — | 0.5 |
Found using present invention process, during operation, the unit of startup optimization includes one-level pretreatment unit, two level materialization unit
PZX reactor units, mixed reaction pond, primary sedimentation basin, coagulation reaction tank and the secondary sedimentation tank of three-level chemical unit, level Four
The active sand biofilter unit of advanced treating module.Effluent index entirely reaches design requirement.
Claims (9)
- A kind of 1. modularization integrated technology process suitable for acid wastewater in mine processing, it is characterised in that：Integrated technique is by one Level pretreatment module, two level materialization module, three-level chemical module and level Four advanced treating module composition, wherein one-level pretreatment mould Block mainly sets Grid screen and balancing tank, both arranged in series；Two level materialization module mainly sets diffusion dialysis device and PZX anti- Device is answered, both arranged in series；Three-level chemical module mainly sets mixed reaction pond, primary sedimentation basin, coagulation reaction tank and secondary Reaction tank, four unit arranged in series；Level Four advanced treating module mainly sets active sand filter and absorbent charcoal adsorption tank, both Arranged in series；Above-mentioned module automatically selects operation different units according to operation condition of water quality.
- 2. a kind of modularization integrated technology process suitable for acid wastewater in mine processing according to claim 1, its feature It is：The one-level pretreatment module includes Grid screen and balancing tank, and the Grid screen import connection acid wastewater in mine enters Mouthful, outlet connects the balancing tank import；The balancing tank outlet connects the two level materialization module inlet；The two level materialization module includes diffusion dialysis device and PZX reactors, and the diffusion dialysis device import connects the one-level Pretreatment module exports, and outlet connects the PZX reactors；The PZX reactor outlets connect the three-level chemical module and entered Mouthful；Further, electrically operated valve is set before the diffusion dialysis device import, opened and closed according to process control operations；The electricity Movable valve entrance connects the one-level pretreatment module outlet；Outlet connects the PZX reactor inlets；The three-level chemical module includes mixed reaction pond, primary sedimentation basin, coagulation reaction tank, secondary sedimentation tank, the mixing Reaction tank import connects the two level materialization module outlet, and outlet connects the primary sedimentation basin；The primary sedimentation basin outlet Connect the coagulation reaction tank；The coagulation reaction tank outlet connects the secondary sedimentation tank；The secondary sedimentation tank outlet connects Connect the level Four advanced treating module；Further, electrically operated valve is set before the coagulation reaction tank import, opened and closed according to process control operations；The electricity Movable valve entrance connects the primary sedimentation basin outlet；Outlet connects the level Four advanced treating module inlet；The level Four advanced treatment unit includes active sand filter and absorbent charcoal adsorption tank, the active sand filter entrance connection institute The outlet of three-level chemical module is stated, outlet is connected to the absorbent charcoal adsorption tank；The absorbent charcoal adsorption tank is connected to water process system System general export；Further, electrically operated valve is set before the active sand filter import, opened and closed according to process control operations；The electricity Movable valve entrance connects the active sand filter entrance；The outlet connection active sand filter outlet；Further, electrically operated valve is set before the absorbent charcoal adsorption tank import, opened and closed according to process control operations；It is described Electrically operated valve entrance connects the absorbent charcoal adsorption tank entrance；Outlet connects the absorbent charcoal adsorption tank outlet.
- 3. a kind of modularization integrated technology process suitable for acid wastewater in mine processing according to claim 1, its feature It is：The present invention is applied to acid wastewater in mine integrated technology process for one kind, is to use said system, comprises the following steps：Step 1, startup optimization one-level pretreatment module, acid wastewater in mine is introduced into Grid screen and removes oil removal, is removed outstanding The waste water of float enters regulating pondage in balancing tank；Step 2, on-line monitoring analyze the acid wastewater in mine pH value in balancing tank, work as pH value<When 4.0, into step 3, Otherwise step 4 is entered；Step 3, startup optimization diffusion dialysis device, reclaim the acid in waste water；Step 4, start PZX reactors, waste water is handled；Step 5, starts mixed reaction pond, feeding lime, poly 4 vinyl pyridine, polymethylacrylic acid dimethylaminoethyl, poly- PAA and polyethyleneimine, stirring, monitor mixed reaction pond pH value of waste water on-line；When pH value is 8.5, stop dosing； Start primary sedimentation basin, precipitation spoil disposal is carried out to waste water；Step 6, monitor concentration of metal ions in primary sedimentation basin on-line, when concentration of metal ions reaches Effluent criteria, that is, work as Cr <0.5 mg/L、Cu<1.0mg/L、Pb<1.0mg/L、Zn<4.0mg/L、Cd<0.1 mg/L、As<During 0.5 mg/L, into step Eight, otherwise into step 7；Step 7, start coagulation reaction tank, add aluminium polychloride, stir, monitor mixed reaction pond waste water metal ions on-line Concentration；When up to standard, stop dosing；Start secondary sedimentation tank, precipitation spoil disposal is carried out to waste water；Step 8, active sand filter entrance SS values are monitored on-line, when SS values>When 100, into step 9, otherwise into step 10；Step 9, start active sand filter, filtration treatment is carried out to waste water；Step 10, monitor absorbent charcoal adsorption tank entrance chromatic value on-line, work as chromatic value>When 50, into step 11, otherwise directly Chinese effluent；Step 11, start absorbent charcoal adsorption tank, adsorption treatment is carried out to waste water.
- 4. a kind of modularization integrated technology process suitable for acid wastewater in mine processing according to claim 1, its feature It is：Grid screen unit design screen number uses 10 mesh.
- 5. a kind of modularization integrated technology process suitable for acid wastewater in mine processing according to claim 1, its feature It is：PZX reactor units design upward flow flow velocity is 15-20m/h.
- 6. a kind of modularization integrated technology process suitable for acid wastewater in mine processing according to claim 1, its feature It is：Absorbent charcoal adsorption tank unit design under to stream flow velocity be 5-7m/h.
- 7. a kind of modularization integrated technology process suitable for acid wastewater in mine processing according to claim 1, its feature It is：The PZX reactors of use, full name are expanded vermiculite ion exchange adsorption reaction device, are filled out by equipment main tank body, finished product PZX The parts such as material, water inlet water distribution system, water inlet pipe, outlet pipe, overflow pipe form.
- 8. a kind of modularization integrated technology process suitable for acid wastewater in mine processing according to claim 1, its feature It is：The PZX reactors of use, finished product PZX fillers therein are made up of housing, filler and strengthening agent etc., and specific practice is as follows： Housing uses finished product polyether polyester shell, and housing is shaped as rectangle, and length and width is consistent with the length and width of equipment, and highly basis is set Evaluation uses 1.0-1.5m, and square surface is netted, is that polyether polyester is processed as into filament by extruding spinneret, in mould Interior filament is overlapping, accumulates, knot, is cooled into, mesh size 5mm；Fill and expand to finished product polyether polyester enclosure Vermiculite, a diameter of 7 ± 1mm of expanded vermiculite；Integrally it will be immersed in strengthening agent after filling, strengthening agent is using carbon dust and 10% Polytetrafluoroethylene (PTFE) mixed liquor, soak 30 minutes and take out in strengthening agent, natural air drying soaks 15 minutes again after 3 hours, natural After air-drying 3 hours, soak 5 minutes again, natural air drying 24 hours is stand-by.
- 9. a kind of modularization integrated technology process suitable for acid wastewater in mine processing according to claim 1, its feature It is：The medicament that hybrid reaction pool unit adds includes lime, poly 4 vinyl pyridine, polymethylacrylic acid dimethylamino second Ester, Sodium Polyacrylate and polyethyleneimine etc., its mass ratio are 1：0.01:0.005:0.02:0.05, wherein, Lime-Injecting Amount determines according to pH value in pond, that is, works as pH<When 8.5, continuously add, it is 30-35mg/L to add mass concentration, when pH value >=8.5 When, stop adding.
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| CN109650650A (en) * | 2018-12-17 | 2019-04-19 | 北京航天环境工程有限公司 | A kind of processing system and application of petrochemical industry sewage |
| CN113415959A (en) * | 2021-08-25 | 2021-09-21 | 湖南江山春锦科技有限公司 | Modular acid mine wastewater treatment equipment |
| CN118454895A (en) * | 2024-07-09 | 2024-08-09 | 贵州雷克康纳科技有限责任公司 | Anchor mesh drop shaft grid blockage detection and iron removal system based on machine vision anchor rod |
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