CN105217844A - A kind of processing method of coal mine wastewater reuse - Google Patents
A kind of processing method of coal mine wastewater reuse Download PDFInfo
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Abstract
The invention provides a kind of processing method of coal mine wastewater reuse, relate to mine wastewater treatment field, waste water is aspirated by water pump, successively through quartz filter, activated charcoal filter; Then enter melded system, after reducing waste water total hardness by ion-exchange, enter sterilisation system; Arrange accurate filter after sterilisation system, filtering accuracy is 5 microns, and residue in the mycelia and other impurity that are inactivated in water body after being disinfected by micropore filter element removal, accurate filter water outlet enters tank, and water outlet meets domestic water water quality requirement.Processing method energy consumption of the present invention is low, investment and working cost few, can carry out advanced treatment to the pit water after pre-treatment, the pit water after advanced treatment can be used for production and the domestic water of plant area, replaces part water supply well; Available protecting water resources, Appropriate application underground mine water resources, reduces water resource waste.
Description
Technical field
The present invention relates to mine wastewater treatment field, particularly relate to a kind of processing method of coal mine wastewater reuse.
Background technology
Pit water both in coal mining process underground water contact with coal seam, rock stratum, add the impact of the activity of the mankind, there occurs a series of physics, chemistry and biochemical reaction, thus water quality has significant coal industry feature: the suspension content of the pit water containing suspended substance is far away higher than surface water, and sensory properties is poor; And the granularity of contained suspended substance is little, light specific gravity, settling velocity are slow, coagulation effect is poor; Also containing used oil, emulsification wet goods organic pollutant in pit water.The total ion content contained in pit water is more much higher than general surface water, and is sulfate ion greatly.Pit water often pH value is low especially, often with a large amount of ferrous ions, adds the difficulty of process.
Pit water after treatment water quality is better, but muriate in water body, vitriol, total dissolved solid equal size are higher, directly cannot replace the water source of water supply well as plant area's water.
For water conservation, Appropriate application underground mine water resources, reduces water resource waste, and colliery is intended the pit water after to process and carried out advanced treatment, and the pit water after advanced treatment is used for production and the domestic water of plant area, replaces part water supply well.
Summary of the invention
The object of the present invention is to provide a kind of processing method of coal mine wastewater reuse, to solve the problems of the technologies described above.
Pit water is drawn into ground and is stored in former pond after pre-treatment in underground, as the former water (coal mine wastewater) of this case treatment system.
Technical problem to be solved by this invention realizes by the following technical solutions:
A processing method for coal mine wastewater reuse, is characterized in that, step is:
Waste water is aspirated by water pump, successively through quartz filter, activated charcoal filter, removes the macrobead suspended matter in water body;
Then enter melded system, melded system comprises softening installation, arranges topping-up pump to ensure the operating pressure required for melded system before softening installation, enters sterilisation system after reducing waste water total hardness by ion-exchange;
Sterilisation system adopts chlorine dioxide generator disinfection, and arrange ejector in the duct, added to by dioxide peroxide in water body, to water body disinfection, sterilisation system reaches more than 90% to inactivation ratio colibacillary in water body;
Arrange accurate filter after sterilisation system, filtering accuracy is 5 microns, and residue in the mycelia and other impurity that are inactivated in water body after being disinfected by micropore filter element removal, accurate filter water outlet enters tank, and water outlet meets domestic water water quality requirement.
The in-built filler of described quartz filter is: at least one in quartz sand, hard coal, particle porous pottery, manganese sand, filtering accuracy, between 0.005-0.01m, can effectively remove colloidal particle and macromolecule organic.
Filtrate in described activated charcoal filter, the quartz sand that bottom filling 0.15-0.4 rice is high, as supporting layer, the particle of quartz sand adopts 20-40 millimeter, quartz sand loads the high granular gac of 1.0-1.5 rice as filtering layer;
Activated charcoal filter is before charging, bottom filtrate quartz sand should carry out the stability test of solution, soak after 24 hours, meet following requirement: the increasing amount of full solid is no more than 20mg/L, the increase of oxygen-consumption is no more than 10mg/L, after soaking in alkaline medium, the increase of silicon-dioxide is no more than 10mg/L;
Quartz sand loads the interior water of activated charcoal filter and rinses, and current should rinse from top to bottom, and addle is discharged by bottom, until go out clarification of water, then load granular active carbon filtrate, then clean, current rinse from the bottom to top, and addle is discharged by top.
Described activated charcoal filter is before gac loads, should overlay the sponge of 2-3 cm thick in bottom and top, effect stops the large granular impurity infiltrations such as algae to be entered, after gac uses 2-3 month, if filter effect declines just should exchange new gac, spongy layer also will regularly replace.
The working process of described melded system comprises: work, backwash, suction salt regenerate, rinse displacement, fast flushing five processes slowly;
After melded system work for some time, the dirt that much can be brought by waste water in the interception of resin top, by backwash process after the removing of these dirts, makes ion exchange resin completely expose to the open air out;
Backwash process is exactly that water washes from the bottom of resin, flows out, the dirt that top is tackled can be washed away like this, this process need 5-15 minute from top;
Suction salt regenerates: by the process of salt solution resin by injection tank body, make salt solution flow through resin at a slow speed, this process need 30 minutes;
Slow flushing displacement: after flowing through resin with salt solution, rinses slow by the process that the salt in resin is slowly all rinsed well with same flow velocity by waste water, this process need 30 minutes;
Fast flushing: adopt the flow velocity identical with working process, rinse with waste water to resin, the last water outlet of this process should be soft water up to standard, and fast flushing process is 5-15 minute.
The invention has the beneficial effects as follows:
Processing method energy consumption of the present invention is low, investment and working cost few, can carry out advanced treatment to the pit water after pre-treatment, the pit water after advanced treatment can be used for production and the domestic water of plant area, replaces part water supply well; Available protecting water resources, Appropriate application underground mine water resources, reduces water resource waste.
Embodiment
The technique means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with specific embodiment, set forth the present invention further, but following embodiment being only the preferred embodiments of the present invention, and not all.Based on the embodiment in embodiment, those skilled in the art under the prerequisite not making creative work obtain other embodiment, all belong to protection scope of the present invention.
A processing method for coal mine wastewater reuse, step is:
Waste water is aspirated by water pump, successively through quartz filter, activated charcoal filter, removes the macrobead suspended matter in water body; Then enter melded system, melded system comprises softening installation, arranges topping-up pump to ensure the operating pressure required for melded system before softening installation, enters sterilisation system after reducing waste water total hardness by ion-exchange; Sterilisation system adopts chlorine dioxide generator disinfection, and arrange ejector in the duct, added to by dioxide peroxide in water body, to water body disinfection, sterilisation system reaches more than 90% to inactivation ratio colibacillary in water body; Arrange accurate filter after sterilisation system, filtering accuracy is 5 microns, and residue in the mycelia and other impurity that are inactivated in water body after being disinfected by micropore filter element removal, accurate filter water outlet enters tank, and water outlet meets domestic water water quality requirement.
One, quartz filter
Quartz filter, formal name used at school shallow media filter is (English: Shallowmediumfilter), it utilizes quartz sand as filtration medium, under pressure, the quartz sand filtration of water higher for turbidity by certain thickness granular or non-grain, effectively retain except suspended substance, organism, colloidal particles, microorganism, the chlorine in anhydrating, smell taste and part heavy metal ion etc., finally reach a kind of High-cfficiency Filtration equipment reducing water turbidity, the effect that purifies water.
Effect
Quartz filter is that a kind of filter leaching material adopts quartz sand as filler.Be conducive to removing the impurity in water.It also has filtration resistance little, specific surface area is large, resistance to acids and bases is strong, the advantages such as resistance to crocking is good, and the particular advantages of quartz filter is also the design by optimizing filtrate and strainer, achieve the self-adapting operation of strainer, filtrate has very strong adaptivity to influent density, operational condition, pretreatment technique etc., and namely when filtering, filter bed is automatically formed and dredges lower close state, is conducive to ensureing at various operating conditions effluent quality, during backwash, filtrate fully scatters, and cleaning performance is good.Sand filter effectively can remove the suspended substance in water, and has obvious removal effect to pollutents such as the colloid in water, iron, organism, agricultural chemicals, manganese, bacterium, viruses.And there is the advantages such as filtration velocity is fast, filtering accuracy is high, retaining power is large.The degree of depth being mainly used in various process water, domestic water, cycling use of water and the waste water such as electric power, electronics, beverage, tap water, oil, chemical industry, metallurgy, weaving, papermaking, food, swimming pool, public works disposes field.
Principle of work
The operation of high-efficiency and continuous strainer can be divided into raw water filtration and the relatively independent process of simultaneously carrying out again of filtrate cleaning and regeneration two.The two completes at the different positions of same strainer, and the former power relies on the lifting of high potential difference or pump, and the latter is then completed by pressurized air.
Quartz sand filter utilizes one or more filtration mediums, normal-temperature operation, acid and alkali-resistance, oxidation, and the PH scope of application is 2-13.The protector that system configuration is perfect and monitoring instrument, and there is backwashing function, the pollutents such as dirt are flushed away very soon, and water loss is few, can arrange full-automatic function by user's requirement.Under pressure, make stoste by the tactile flocculation of this medium, adsorb, retain, remove impurity, thus reach the object of filtration.Its in-built filler is generally: quartz sand, hard coal, particle porous pottery, manganese sand etc., user can according to practical situation choice for use.Its filtering accuracy, between 0.005-0.01m, can effectively remove colloidal particle and macromolecule organic.
Be mainly used in removing the suspended substance in water.
Charcoal filter is mainly used in planar water free chlorine (adsorptive power reaches 99%), also has higher clearance to organism and colourity.Be soften, the pre-processing device of desalting system pure water technique.Filtrate is activated carbon.The main material of equipment is that carbon steel is anticorrosion, glass reinforced plastic and stainless steel etc.
Strainer is formed
Strainer is formed primarily of filter body, supporting pipelines and valve.Wherein filter body mainly comprises following assembly: simplified; Cloth water assembly; Supporting component; Backwash tracheae; Filtrate; Vent valve (external) etc.
Two, activated charcoal filter
Brief introduction
A filtration apparatus for tank body, shell is generally stainless steel or glass reinforced plastic, inner fills gac, is used for educt in filtered water, microorganism, part heavy metal ion, and effectively can reduce the colourity of water.
Activated charcoal filter is a kind of comparatively conventional water treating equipment, the chlorine residue that cannot remove can be adsorbed during prime is filtered as the pre-treatment of water treatment desalination system, can effectively ensure rear class service life of equipment, improve effluent quality, preventing pollution, particularly prevent rear class reverse osmosis membrane, more than the free state of ion exchange resin etc., oxygen intoxication is polluted.Also adsorb simultaneously and leak the pollutants such as the small organic molecule of coming from prime, have obvious Adsorption effect to peculiar smell, colloid and pigment, heavy metal ion etc. in water, also there is the effect reducing COD.The SDI value of RO water inlet can be reduced further, ensure SDI<5, TOC<2.Oppm.
Principle
The absorption principle of gac is: the surface concn forming a layer equilibration at its particle surface.The size of activated carbon granule also has impact to adsorptive power.In general, activated carbon granule is less, and filtration area is larger.So pulverous gac total area is maximum, adsorption effect is best, but pulverous gac is easy to flow in water tank with water, is difficult to control, seldom adopts.Granular gac not easily flows because of shaping particles, and the impurity such as Organic substance in water also not easily block in activated carbon filter layer, its high adsorption capacity, carry change convenient.
The adsorptive power of gac and the time contacted with water are directly proportional, and duration of contact is longer, and the water quality after filtration is better.Attention: the water of filtration should outflow filter layer lentamente.New gac should wash cleaning before first time uses, otherwise has ink black water to flow out.
Gac is before loading strainer, should overlay the sponge of 2 ~ 3 cm thicks in bottom and top, effect stops the large granular impurity infiltrations such as algae to be entered, after gac uses 2 ~ 3 months, if filter effect declines just should exchange new gac, spongy layer also will regularly replace.
Activated charcoal filter pressurized vessel is the pressurized vessel of a kind of interior filling rubble sand bed course and high grade activated carbon.
Form the surface concn of a layer equilibration on activated carbon granule surface, then organic substance impurity absorption in activated carbon granule, use the adsorption effect at initial stage very high.But the time one is long, and the adsorptive power of gac can weaken to some extent, and adsorption effect also declines thereupon.If water quality is muddy in aquarium, Organic substance in water content is high, and gac will soon lose filtering function.So gac should regularly clean or replace.
Gac is that a kind of very tiny carbon granule has very large surface-area, and also has more tiny hole--kapillary in carbon granule.This kapillary has very strong adsorptive power, because the surface-area of carbon granule is very large, so fully can contact with gas (impurity).Encounter kapillary when these gases (impurity) to be adsorbed, aseptic.The surface-area research of gac is very important, and the specific surface area of gac detects data and only has the result adopting BET method to detect to be only true and reliable, the domestic detection having a lot of instrument can only do directly comparing method.Domestic and international specific surface area test is unified adopts multiple spot BET method, domestic and international formulation specific area measuring standard out, all based on BET testing method, please refer to the method that China's national standard (GB/T19587-2004)-gas adsorption BET principle measures solid matter specific surface area.It is more time-consuming work in fact that specific surface area detects, due to the difference of sample adsorption ability, the test of some sample may need to expend the daylong time, if test process does not realize fully automated, that tester can not leave with regard to the moment, and wanted high concentration, visualizer dial plate, manipulation knob, will cause the failure of test process unless you give your whole attention to it, and this can waste tester's a lot of quality time.F-Sorb2400 specific-surface area detection instrument is the instrument (having both directly comparing method) that really can realize BET method measuring ability, prior F-Sorb2400 specific-surface area detection instrument is the intelligentized specific surface area test set of domestic unique fully automated up to now, its test result and international consistence very high, stability is also fine, reduce personal errors simultaneously, improve test result accuracy.
Activated charcoal filter has manufactured and designed out after we have drawn the suggestion of users, and it changes original water inlet and blowdown direction, makes purifying water effect better, be more popular in users.This product is necessity one equipment of the water treatment such as Drinking Water and food water.Turbidity <5 millimeter/liter clear water by after this device processes, can obtain as clear as crystal, dry alcohol is good to eat, nontoxic, aseptic, free from extraneous odour, the water purification that can directly drink raw.Purify waste water and meet national water quality standard for drinking water.
It is heterochromatic that this equipment can be removed in clear water, peculiar smell and mercury, plumbous, cadmium, zinc, iron, manganese, the heavy metal substances such as chromium, also can remove the arsenic in clear water, hydride, sulfide, the macromolecular compounds such as chlorine residue and strontium, the radioactive substances such as radium, remove and kill bacterium in water and intestinal bacteria and other carcinogenic substance.Be drinking water, food, beverage, pharmacy, chemistry waits the ideal occlusion wetting system of Industrial cleaning facility water.Activated charcoal filter structure is simple, and operating maintenance is convenient.Be suitable for the food higher with water quality requirement, beverage, the enterprises and institutions such as chemical industry, are also applied to restaurant, hotel, army, station, harbour.As the feedwater equipment of process water and domestic water.
Filtrate in activated charcoal filter adsorber, the quartz sand suction of 0.15 ~ 0.4 meter high can be loaded in bottom, and as supporting layer, the particle of quartz sand can adopt 20-40 millimeter, quartz sand can load the gac of 1.0-1.5 rice grain shape as filtering layer.Filling thickness is generally 1000-2000mm.
Activated charcoal filter is before charging, and bottom filtrate quartz sand should carry out the stability test of solution, soaks after 24 hours, meets following requirement: the increasing amount of full solid is no more than 20mg/L.The increase of oxygen-consumption is no more than 10mg/L.After soaking in alkaline medium, the increase of silicon-dioxide is no more than 10mg/L.
Activated charcoal filter quartz sand is rinsed rear load facility planted agent well and is carefully cleaned, and current should rinse from top to bottom, and addle is discharged by bottom, until go out clarification of water, then load graininess carbon leaching material, then clean, current from bottom to top rinse, and addle is discharged by top.
Larger molecular organics, ferriferous oxide, chlorine residue are mainly removed in the effect of activated charcoal filter.This is because organism, chlorine residue, ferriferous oxide easily make ion exchange resin poisoning, and chlorine residue, cats product etc. not only can make resin poison, also can destroy membrane structure, and reverse osmosis membrane was lost efficacy.
Feature
(1) activated carbon adsorption strainer cylinder body adopts the design of hydraulic simulation major diameter, and adopt particle diameter reasonable, specific surface area is greater than the highly effective active carbon of 1000 ㎡/g, and its existing upper strata special efficacy is filtered again the functions such as lower floor's efficient adsorption, greatly improves the work-ing life of producing Water warfare degree and carbon.
(2) water quality contents of residual chlorine :≤0.1PPM after activated carbon adsorption filter process.
(3) distinguished to performances such as peculiar smell, organism, colloid, iron and chlorine residue in water body;
(4) for the turbidity, the colourity that reduce water body, purify water, reduce and also have good effect to the pollution etc. of follow-up system (reverse osmosis, ultrafiltration, ion-exchanger).
Three, melded system
Principle of work
Full-automatic Na-ion exchanger adopts ion exchange principle, removes the scale-forming ion such as calcium, magnesium in water.When the former water containing hardness ions is by interchanger inner resin layer, calcium in water, magnesium ion are just replaced with the sodium ion of resin absorption, resin absorption calcium, magnesium ion and sodium ion enters in water, the water flowed out in interchanger is like this exactly the softening water eliminating hardness.
Because water hardness is formed primarily of calcium [1], magnesium and represents, therefore generally adopt Zeo-karb (water softener), Ca2+, Mg2+ (forming the major ingredient of incrustation scale) in water are cemented out, along with the increase of Ca2+, Mg2+ in resin, the usefulness that resin removes Ca2+, Mg2+ reduces gradually.
After a certain amount of calcium ions and magnesium ions of Resin Absorbent, just must regenerate, regenerative process is exactly rinse resin layer with the salt solution in salt box, and the hardness ions on resin is being cemented out, with outside regeneration waste liquid drain tank, resin has just recovered softening function of exchange again.
To be formed primarily of calcium, magnesium due to water hardness and represent that the principle forming and represent sodium ion exchange sofening treatment due to water hardness primarily of calcium, magnesium is by sodium form Zeo-karb by former water, hardness components Ca2+ in water, Mg2+ are exchanged with the Na+ phase in resin, thus Ca2+, the Mg2+ in planar water, water is softened.As represented sodium form resin with RNa, its exchange process is as follows:
2RNa+Ca2+=R2Ca+2Na+
2RNa+Mg2+=R2Mg+2Na+
Namely water is by after Na-ion exchanger, and Ca+, Mg+ in water are replaced as Na+.
The operational scheme of general control valve is: operation, backwash, suction salt, wash slowly, salt box moisturizing, just to wash.
Workflow
Work, backwash, suction salt (regeneration), slow flushing (displacement), fast flushing five processes.The all process steps of different softened water equipment closely, just due to the difference of actual process or the needs of control, may have the flow process that some are additional.Any softened water equipment based on sodium ion exchange is all (wherein, full-automatic softened water equipment can increase salt solution refill process) that development comes on the basis of these five flow processs.
Softened water equipment workflow schematic diagram backwash: the equipment after work for some time, the dirt that much can be come by former water-band in the interception of resin top, after the removing of these dirts, ion exchange resin could expose to the open air out completely, and the effect of regeneration just can be guaranteed.
Backwash process is exactly that water washes from the bottom of resin, flows out, the dirt that top is tackled can be washed away like this from top.This process generally needs about 5-15 minute.
Inhale salt (regeneration): by the process of salt solution resin by injection tank body, legacy equipment adopts salt pump to be injected by salt solution, and full automatic equipment adopts special built-in injector to be sucked by salt solution (as long as water inlet has certain pressure).In practical work process, salt solution flows through resin regeneration effect with slower speed uses the effective of saline soak resin than simple, so softened water equipment is all the method regeneration adopting salt solution to flow through at a slow speed resin, this process generally needs about 30 minutes, and the real time is by the impact of salt dosage.
Slow flushing (displacement): after flowing through resin with salt solution, rinse slow by the process that the salt in resin is slowly all rinsed well with same flow velocity by former water, owing to still having calcium ions and magnesium ions on a large amount of functional groups by sodium ion exchange in this flushing process, according to practical experience, the main process of regeneration in this process, so this process is called displacement by a lot of people.This process is generally identical with the time of inhaling salt, namely about 30 minutes.
Fast flushing: in order to residual salt cleaning down is clean, adopt the flow velocity close with real work, rinse with former water to resin, the last water outlet of this process should be soft water up to standard.Generally, fast flushing process is 5-15 minute.
Technical requirements
Inlet water pressure: 0.18-0.6Mpa
Working temperature: the 1-55 DEG C of source water hardness: <8mmol/L
Operating method: automatic/hand goes out the water hardness :≤0.03mmol/L
Regenerator: NaCL regeneration: following current/adverse current
Exchanger: 001*7 strong-acid ion exchange resin
Control mode: time/flow working power: 220V/50Hz
Four, sterilizing unit
Brief introduction
1. be a kind of novel oxygenant and sterilizing agent, dioxide peroxide be efficient with it, outstanding person that wide spectrum, noresidue, the disinfecting power of no coupling product and decolouring, deodorizing, the Strong oxdiative ability such as to eliminate the unusual smell have become water treatment field.Compare dioxide peroxide with traditional sterilizing agent such as ultraviolet, ozone, clorox, liquid chlorine and have unique advantage, it more and more becomes insider's first and selects.
2, system composition
Chemical process CO 2 generator, being added by feeder system, reactive system, security system, automatic control system and absorption is form.
3, reaction principle
One class reaction principle: 5NaClO
2+ 4HCL=4ClO
2+ 5NaCl+2H
2o
Five, accurate filter
Principle
Accurate filter (also known as making cartridge filter), cylinder shell generally adopts stainless steel manufacture, the tubulose filter cores such as the inner PP of employing is melt-blown, line burns, folding, titanium filter core, active carbon filter core are as filtering element, different filtering elements is selected, to reach the requirement of effluent quality according to different filtration mediums and design technology.Along with the development filtering industry, increasing industry and enterprise have applied to accurate filter, and increasing enterprise adds accurate filter industry.
Feature
(1) filtering accuracy is high, filter core uniform pore diameter.
(2) filtration resistance is little, and flux is large, retaining power is strong, long service life.
(3) material for core cleanliness factor is high, pollution-free to filtration medium.
(4) chemical solvents such as acid-and base-resisting.
(5) intensity is large, and high temperature resistant, filter core is not yielding.
(6) cheap, working cost is low, is easy to cleaning, replaceable filter element.
More than show and describe ultimate principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification sheets is only preference of the present invention; be not used for limiting the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (5)
1. a processing method for coal mine wastewater reuse, is characterized in that, step is:
Waste water is aspirated by water pump, successively through quartz filter, activated charcoal filter, removes the macrobead suspended matter in water body;
Then enter melded system, melded system comprises softening installation, arranges topping-up pump to ensure the operating pressure required for melded system before softening installation, enters sterilisation system after reducing waste water total hardness by ion-exchange;
Sterilisation system adopts chlorine dioxide generator disinfection, and arrange ejector in the duct, added to by dioxide peroxide in water body, to water body disinfection, sterilisation system reaches more than 90% to inactivation ratio colibacillary in water body;
Arrange accurate filter after sterilisation system, filtering accuracy is 5 microns, and residue in the mycelia and other impurity that are inactivated in water body after being disinfected by micropore filter element removal, accurate filter water outlet enters tank, and water outlet meets domestic water water quality requirement.
2. the processing method of coal mine wastewater reuse according to claim 1, it is characterized in that: the in-built filler of described quartz filter is: at least one in quartz sand, hard coal, particle porous pottery, manganese sand, filtering accuracy, between 0.005-0.01m, can effectively remove colloidal particle and macromolecule organic.
3. the processing method of coal mine wastewater reuse according to claim 1, it is characterized in that: the filtrate in described activated charcoal filter, the quartz sand that bottom filling 0.15-0.4 rice is high, as supporting layer, the particle of quartz sand adopts 20-40 millimeter, quartz sand loads the high granular gac of 1.0-1.5 rice as filtering layer;
Activated charcoal filter is before charging, bottom filtrate quartz sand should carry out the stability test of solution, soak after 24 hours, meet following requirement: the increasing amount of full solid is no more than 20mg/L, the increase of oxygen-consumption is no more than 10mg/L, after soaking in alkaline medium, the increase of silicon-dioxide is no more than 10mg/L;
Quartz sand loads the interior water of activated charcoal filter and rinses, and current should rinse from top to bottom, and addle is discharged by bottom, until go out clarification of water, then load granular active carbon filtrate, then clean, current rinse from the bottom to top, and addle is discharged by top.
4. the processing method of coal mine wastewater reuse according to claim 1, it is characterized in that: described activated charcoal filter is before gac loads, the sponge of 2-3 cm thick should be overlayed in bottom and top, effect stops the large granular impurity infiltrations such as algae to be entered, after gac uses 2-3 month, if filter effect declines just should exchange new gac, spongy layer also will regularly replace.
5. the processing method of coal mine wastewater reuse according to claim 1, is characterized in that: the working process of described melded system comprises: work, backwash, suction salt regenerate, rinse displacement, fast flushing five processes slowly;
After melded system work for some time, the dirt that much can be brought by waste water in the interception of resin top, by backwash process after the removing of these dirts, makes ion exchange resin completely expose to the open air out;
Backwash process is exactly that water washes from the bottom of resin, flows out, the dirt that top is tackled can be washed away like this, this process need 5-15 minute from top;
Suction salt regenerates: by the process of salt solution resin by injection tank body, make salt solution flow through resin at a slow speed, this process need 30 minutes;
Slow flushing displacement: after flowing through resin with salt solution, rinses slow by the process that the salt in resin is slowly all rinsed well with same flow velocity by waste water, this process need 30 minutes;
Fast flushing: adopt the flow velocity identical with working process, rinse with waste water to resin, the last water outlet of this process should be soft water up to standard, and fast flushing process is 5-15 minute.
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| CN106977018A (en) * | 2017-05-05 | 2017-07-25 | 厦门利德宝电子科技股份有限公司 | A kind of wiring board produces the secondary method utilized of purified water |
| CN107129075A (en) * | 2017-07-04 | 2017-09-05 | 宿州学院 | The multiple modules coupling processing system and method for a kind of coal mine gob water conservancy |
| CN107129075B (en) * | 2017-07-04 | 2023-06-02 | 宿州学院 | Multi-module coupling treatment system and method for coal mine goaf water utilization |
| CN107215986A (en) * | 2017-08-03 | 2017-09-29 | 泰安市鲁峰电工科技有限公司 | A kind of underground coal mine water treatment facilities |
| CN108033588A (en) * | 2018-02-02 | 2018-05-15 | 高建华 | A kind of sewage circular treatment equipment |
| CN109081482A (en) * | 2018-09-30 | 2018-12-25 | 四川省威沃敦化工有限公司 | A kind of shale gas fracturing outlet liquid electrolytic sterilizing apparatus sledge |
| CN110451707A (en) * | 2019-07-01 | 2019-11-15 | 浙江工业大学 | A kind of waste water of mine Zero discharge treatment method |
| CN114684954A (en) * | 2020-12-31 | 2022-07-01 | 新疆中核天山铀业有限公司 | Reverse osmosis recycling method and device for uranium mine hydrochloric acid well-flushing waste liquid |
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