CN209411998U - A kind of processing system of highly mineralized mine water reuse and resource utilization - Google Patents
A kind of processing system of highly mineralized mine water reuse and resource utilization Download PDFInfo
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- CN209411998U CN209411998U CN201821810061.4U CN201821810061U CN209411998U CN 209411998 U CN209411998 U CN 209411998U CN 201821810061 U CN201821810061 U CN 201821810061U CN 209411998 U CN209411998 U CN 209411998U
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Abstract
The utility model provides highly mineralized mine water reuse a kind of and the processing system of resource utilization, preprocessed first that hardness is effectively reduced and forms precipitation of calcium carbonate, and calcium carbonate recycles, and then carries out first time desalination；Secondly concentrated to carry out secondary desalination again；It is most handled afterwards through evaporative crystallization, is truly realized waste water zero emission.Rationally, system run all right, waste water treatment efficiency is high for the utility model treatment process and system flow design, energy saving, effectively reduces processing cost.
Description
Technical field
The utility model belongs to water treatment field, and in particular to a kind of highly mineralized mine water reuse and resource utilization
Processing system.
Background technique
China belongs to poor-water country, and the water resource occupancy volume in China only has the world and is averaged the 1/4 of occupancy volume, occupies the world 121
Position, is listed in one of 12 poor-water states in the world.Technique of Coal Mine Drainage is important water resource, it was reported that coal in China produces at present
In the process, about 20~3,000,000,000 m are discharged every year3Mine water, wherein northern area accounts for about 60%, and with coal mining depth
Increase and increases year by year.The utilization rate of present China's coal-mine mine water resource less than 20%, China, plateau, western part, the Plain of Huanghua Area and
The salinity of most Technique of Coal Mine Drainage of Coastal East China is higher, and the direct emission of this kind of mine water not only wastes valuable
Water resource, but also can cause environmental pollution.How to select more economical rationality and the method that is simple and efficient handles high mine
Change degree mine water causes the extensive concern of environmental worker and society.
Highly mineralized mine water generally refers to the mine water that salt content is greater than 1000ng/L.According to incompletely statistics, China's coal
For the salt content of mine highly mineralized mine water generally in 1000~3000mg/L, the mine water salt content of a small amount of mine reaches 4000mg/L
More than.The water quality majority of this kind of mine water is in neutrality or meta-alkalescence, and with bitter taste, therefore also referred to as bitter.Because of this kind of mine
The salt content of water is mainly derived from Ca2+, Mg2+, Na+, K+, SO4 2-, HCO3 -, Cl-Plasma, so hardness is often higher.
The main reason for generating highly mineralized mine water: since China some areas rainfall is few, evaporation capacity is big, Climate Dryness
Drought is concentrated by evaporation strongly, and salinity increases in stratum, and the recharge of ground water, runoff, Escape condition are poor, make underground water mineralising itself
Degree is higher, so the salinity of mine water is also high；When containing a large amount of carbonate rock stratum and sulfate thin layer in coal measure strata,
Mine water contacts extensively with seam mining, with underground water, and aggravation soluble mineral dissolution makes the Ca in mine water2+, Mg2+,
SO4 2-, HCO3 -, CO3 2-Increase；Free acid is generated because sulfide gasifies when exploiting high-sulfur coal seam, free acid same carbonate mine again
Neutralization reaction occurs for object, alkaline matter, makes Ca in mine water2+, Mg2+, SO4 2-Plasma increases；Some areas are due to underground
Salt water invades coalfield, makes mine water in concentrated water.
Highly mineralized mine water to ecological environment if that, with regard to direct emission, can bring certain harm without processing.It is main
Show as the rising of river water salt content, shallow groundwater is raised, soil breeds salinization of soil, saline-alkali tolerant class Forest tree seed gesture is not cut
It is weak, crop production reduction etc..The industrial production in area is had an effect on simultaneously, because many industrial productions cannot use the water of high salinity,
If must first reduce salt content in water if, cost thus will increase.Underground water is used instead if not having to, and will cause underground water
A large amount of exploitations, cause the shortage of groundwater resources, Regional Economic Development can be seriously affected.
Utility model content
The purpose of the utility model is to provide a kind of highly mineralized mine water reuse and the processing systems of resource utilization
System, treatment process is simple, effect is good, realizes that the resource utilization of highly mineralized mine water reuse and salt utilizes, reaches useless
Water zero discharge.
In order to solve the above technical problems, the utility model adopts the following technical solutions:
The processing method of a kind of highly mineralized mine water reuse and resource utilization, includes the following steps:
(1) pre-process desalination section: raw water, which initially enters high efficiency clarification tank and adds chemical agent, to be softened, and is then discharged
Into ultrafiltration apparatus, suspended matter, colloidal particles, bacterium, virus in water removal etc. and organic matter are removed, then water outlet enters first
Reverse osmosis unit carries out desalination, and the first reverse osmosis unit produces reuse after water discharge, and strong brine continues with；
(2) strong brine enriching section: the strong brine that step (1) obtains is discharged into potassium permanganate composites and adds chemical agent removal
Then hardness and silicon are discharged and soften again through ion exchange resin, water outlet enters nanofiltration device after carbonization treatment and goes in water removal
Coloration, divalent ion and peculiar smell, nanofiltration device produces reuse after water discharge, and it is further dense that strong brine enters the second reverse osmosis unit
Contracting, the second reverse osmosis unit produce reuse after water discharge, and strong brine continues with；
(3) evaporative crystallization section: the strong brine that step (2) obtains, which is discharged into reaction tank and adds chemical agent, to be softened, so
Water outlet enters micro-filtration afterwards, further removes total silicon, and micro-filtration water outlet removes COD through ozone oxidation again, be then discharged into
Enter evaporation and crystallization system output distilled water and sodium sulphate, that is, is disposed.
Preferably, in the processing method of highly mineralized mine water reuse above-mentioned and resource utilization, the step (1)
In: the chemical agent that adds is sodium hydroxide and soda ash；The ultrafiltration apparatus is immersion ultrafiltration apparatus, wherein use
Ultrafiltration membrane is the hollow-fibre membrane in 0.02 micron of aperture.
Since TDS and hardness are higher in raw water, waste water is constantly concentrated and is more than its dissolution in membrane component in ultrafiltration apparatus
When spending the limit, meeting fouling on film surface, the rate of recovery is higher, and the risk for generating fouling is bigger.Pretreated main function is
Total hardness, total alkalinity, colloid and suspended matter in raw water are reduced, effluent quality is made to meet the water inlet requirement of subsequent desalination.
1) except hard
The common preprocess method for removing fouling tendency substance is medicament tenderizer.
The softening of sodium hydroxide+soda ash is high for hardness, water inlet more than organic matter when, with low investment, easy to operate, operational safety
Reliably, without secondary pollution, it is the common softening method of waste water recycling device.
Ca(HCO3)2+2NaOH→CaCO3↓+Na2CO3+2H2O
Mg(HCO3)2+4NaOH→Mg(OH)2↓+2Na2CO3+2H2O
CO2+2NaOH→Na2CO3+H2O
CaCl2+Na2CO3→CaCO3↓+2NaCl
CaSO4+Na2CO3→CaCO3↓+Na2SO4
MgSO4+2NaOH→Mg(OH)2↓+Na2SO4
MgCl2+2NaOH→Mg(OH)2↓+2NaCl
2) turbidity removal
The leading portion filtering technique of film processing system mainly includes mechanical filter and two kinds of ultrafiltration.
Mechanical filter is mainly active carbon filter, sand filtration, more medium filter etc., and application is relatively more, but its operation dimension
Intricate operation is protected, filtrate is easy pollution and is crushed, and delivery turbidity is relatively high.
Ultrafiltration is a kind of membrane separation technique that can be purified solution, separate, being concentrated.Ultrafiltration membrane can effectively remove water
In suspended matter, colloidal particles, bacterium and most of virus etc., the removal rate to organic matter is 20%~60%.
Submerged ultrafiltration uses " from outside to inside " type of flow, carries out via the hollow-fibre membrane that aperture is 0.02 micron
Filtering.Immersion ultrafiltration system inside hollow-fibre membrane by forming vacuum through liquid pump.The water of processing just passes through ultrafiltration membrane
Aperture entered the main channel of inside hollow fibre, then by entering product water tank (or feed pipe through liquid pump
Net).In backwash, air has been introduced into the bottom of ultrafiltration membrane case, passes through the table for being blended in ultrafiltration membrane with liquid portion
Face forms vortex.Air bubble scrubbing in rising and the outer surface for cleaning ultrafiltration membrane filaments, improve the treatment effeciency of ultrafiltration membrane.
Immersion ultrafiltration has the advantage that
A. submerged ultrafiltration is the hollow-fibre membrane (raw water outside, including water purification) of water flow ecto-entad.This means that
It is only clean inside film, pass through by the water flow of ultrafiltration.And the bacterium and suspended matter in raw water still rest on the outside of film,
So the risk that water purification water flow channel is not blocked and polluted by solid suspension.
B. submerged ultrafiltration is the negative pressure sucking water outlet submerged in water using very little, operating pressure be -2 to -
Between 10psi.So in this operating condition, the energy consumption of pump is also relatively fewer.
C. technological operation maintenance is simple and easy.Because entire processing is the operation of a single step, ultrafiltration system does not need to add
The step of adding other chemical agents (in addition to enhanced flocculation), clarification or sand filtration.On the contrary, they only need for operator
The good operation of ultrafiltration system and ultrafiltration membrane is ensured that through the operation of liquid pump and air blower by maintenance.
3) desalination system
Desalination system main function is to reduce salt content in raw water, so that production water is met quality of reused water requirement, obtains simultaneously
The rate of recovery as high as possible reduces the yield of strong brine to the greatest extent.Advanced treating desalination system uses ro treatment technology.
Reverse osmosis (RO) technique, runs under the conditions of raw water pH=7~9, causes reverse osmosis to avoid organic matter and silicate
Permeable membrane dirt is stifled.Hyperfiltration adapts to the raw water of all kinds of salt content, especially in the engineering of water treatment of high salinity, can obtain
Good technical economic benefit.The salt rejection rate of reverse osmosis membrane is high, and the rate of recovery is high, and stable, occupied area is small, easy to operate,
Recent years, reverse osmosis equipment was widely used in all kinds for the treatment of mine drainage engineerings.
Preferably, in the processing method of highly mineralized mine water reuse above-mentioned and resource utilization, the step (2)
In: the chemical agent that adds is magnesium chloride, sodium hydroxide and soda ash, and the ion exchange resin is Weak-acid cation exchange tree
Rouge, the nanofiltration membrane aperture of the nanofiltration device are 1nm, and by the nanofiltration concentrate recirculation high density sedimentation basin of nanofiltration device with
Sulfate ion is provided, second reverse osmosis unit is disc tube reverse osmosis (dt-ro) device.
Step 1 (1) pre-processes the strong brine that desalination section desalinating process generates, and is handled using embrane method, therefore need to solve two
Critical issue:
1) fouling contact scar under high concentration multiple
When indissoluble salt is constantly concentrated in membrane component and is more than its solubility limit, meeting fouling on film surface is returned
Yield is higher, and the risk for generating fouling is bigger.Common difficulty soluble salt is CaSO4、CaCO3、CaF2And SiO2Deng.
It is blocked up for microorganism dirt and fouling tendency dirt blocks up and takes pretreatment facility.For microorganism dirt block up preprocessing means compared with
To be simple, the method for adding fungicide is mainly taken at present, the microorganism in water is inactivated, and reduction microorganism dirt is blocked up several
Rate.
Outer membrane company, the country has for the anti-scaling proplsal of specific water quality recommendation and medicament etc., for controlling fouling at present.
In addition to this, removing fouling tendency substance in advance in preprocessing process is also conventional means.It is commonly pre-processed in strong brine processing
Remove the method medicament tenderizer removal hardness and silicon of fouling tendency substance.
Nanofiltration concentrate recirculation provides sulfate ion and is reacted as follows:
CaSO4+Na2SO4→CaSO4↓+Na2SO4
The saturation calcium sulfate of this equation concentrated water, which further increases degree of supersaturation under the action of sulfate ion, to be made in water
Calcium sulfate precipitation be precipitated, go water removal in hardness.
Second order reaction is used for hardness height by adding magnesium chloride+sodium hydroxide+soda ash softening, goes the titanium dioxide in water removal
Silicon, it is with low investment, easy to operate, safe and reliable to operation, without secondary pollution.
2) silicon is removed
In order to avoid membranous system is during longtime running, oversaturated silica auto-polymerization forms insoluble
Colloidal silicon or gluey silicon, cause film dirt stifled.To guarantee counter-infiltration system safe and stable operation, need to reduce water inlet silicone content.
After the pH value to appropriate value for adjusting water, magnesia mixture is added except silicon.Magnesia mixture can choose plus magnesium chloride.
CO2+2NaOH→Na2CO3+H2O
CaCl2+Na2CO3→CaCO3↓+2NaCl
CaSO4+Na2CO3→CaCO3↓+Na2SO4
MgCl2+2NaOH→Mg(OH)2↓+2NaCl
Mg(OH)2+SiO2→Mg2Si3O8·nH2O↓
3) ion exchange softening further removes hardness
Ion exchange softening method is swapped using active cation in resin and hardness ions in water, the calcium and magnesium in water
Ion and the above ion of other divalent are replaced by sodium ion or hydrogen ion, remove fouling tendency ion in water removal.Ion exchange softening
Weak acid positive resin exchanger.
Weak acid positive resin exchanger is to utilize hydrogen ion (H+) carry out cation in exchanged water, reaction equation is as follows:
Mx++ xH-Re=M-Rex+xH+
In above formula: Mx+Table cation, x table electricity price number, Mx+The H of cation and H-Re on resin cation+Exchange.
The characteristic of Weak-acid cation exchange resin in water is similar to weak acid.Weaker (the example of ability of it and neutral salt effect
Such as SO4 2-、Cl-Equal strong acid anions).It is only capable of reacting with faintly acid salt (salt with basicity), generates after reaction weak
Acid.Faintly acid positive resin can handle the biggish water of basicity, and cation corresponding to basicity is removed.In addition, faintly acid positive resin
Also have many advantages, such as that exchange capacity is big, Yi Zaisheng.
To restore resins exchange ability, needs to be added soda acid and regenerated, in low use of intaking.It can be with after medicament softening
The scale for further decreasing ion-exchange unit reduces the dosage of regenerative agent, significantly improves the reverse osmosis rate of recovery of back segment.
Nanofiltration is a kind of pressure-driven membrane separating process between reverse osmosis between ultrafiltration, and the pore diameter range of nanofiltration membrane exists
Several rans.Can molecular cut off be greater than 100 organic matter and multivalent ion, allow small organic molecule and unit price from
Son penetrates；It can be run under the harsh conditions such as high temperature, acid, alkali, anti-pollution；Operating pressure is low, and membrane flux is high, device operating cost
It is low；It can be combined with other sewage disposal process to further decrease expense and improve treatment effect.In water process, nanofiltration
Film is mainly used for the processing of the waste water containing solvent, the coloration that can be effectively removed in water, divalent ion and peculiar smell.
In view of the strong brine amount that reverse osmosis, nanofiltration generates is relatively large, in order to reduce investment outlay, high strong brine need to be carried out
It is concentrated again.The concentration technique again of high strong brine is other than evaporating and concentrating process, most widely used and relative inexpensiveness technique
It is then reverse osmosis for high pressure, i.e. disc tube reverse osmosis (dt-ro) (DTRO) technique.
Disc tube reverse osmosis (dt-ro) (DTRO) is a kind of reverse osmosis form, is the film group for being specifically used to handle high-concentration sewage
Part, core technology are dish tubular membrane film columns.Reverse osmosis membrane and waterpower flow guiding disc are stacked together, with center pull rod and
End plate is fixed, and is then placed in pressure jacket, just forms a film column.DTRO overcomes general counter-infiltration system and is handling
The shortcomings that blocking is easy when percolate, makes that system is more stable, operating cost is lower.The service life of DT film column is 3 years
More than.Disc tube reverse osmosis (dt-ro) technology is that the current country can guarantee landfill leachate stable water outlet, persistently reach country-level or two
The mature technology of grade discharge standard.DTRO system's operating mode is flexible, and water purification that treated, which can ensure that, reaches standard.Systematic economy
Net producing water ratio be 45%~55%.DTRO system can be used with other process combinations, as the treatment process before final discharge,
It can ensure that treated and be discharged reliable standard.
Preferably, in the processing method of highly mineralized mine water reuse above-mentioned and resource utilization, the step (3)
In: the chemical agent that adds is magnesium chloride, sodium hydroxide and soda ash, and the filter membrane in the micro-filtration is tube microfiltration membrane,
The evaporation and crystallization system recycles evaporation and crystallization system using falling film type mechanical vapor-compression.
Preferably, in the processing method of highly mineralized mine water reuse above-mentioned and resource utilization, the evaporation knot
The total silicon of water inlet of crystallographic system system is controlled in 40mg/L hereinafter, COD is controlled in 200mg/L or less.
The water of step (3) evaporative crystallization section is the high strong brine after disc tube reverse osmosis (dt-ro) (DTRO) concentration.This part water
By water quality impact, reuse cannot be continued, it is necessary to carry out further evaporative crystallization processing, could really realize waste water zero emission.
According to leading portion water water quality situation, for the factors such as the total silicon of strong brine is higher, salinity is high, also need to steam raw water
Hair pretreatment, removes certain total silicon and COD, and vapo(u)rization system is intake the control of total silicon in 40mg/L hereinafter, COD control exists
200mg/L is hereinafter, finally ensure the coloration of crystal salt and the resource rate of crystal salt.
Tube microfiltration membrane treatment effect is splendid, and total silicon is less than 40mg/L, has the advantage that
(1) big flow cross-flow filtration is avoided that the generation of fouling；
(2) removal rate that the ultimate attainment separation of solid and liquid of film forms the compound of any particle shape of particle to chemical reaction connects
Nearly 100%, it ensure that effluent quality is excellent and stablizes；
(3) softening added amount of chemical is reduced, without adding PAM, equipment acid and alkali-resistance (pH1~14), chemical cleaning can be restored
Flux；
(4) pipe-line system is simple, and the probability that goes wrong is lower；
(5) occupied area is small, saves land resource；
(6) tube microfiltration membrane " integrated homogeneity, mill and more hard " long service life, average replacement cost are very low.
For the total silicon of strong brine is higher, salinity is high etc., factors can using tube microfiltration membrane as softening preprocessing means
Freely in face of softening except the harsh environment progress of " high alkalinity, high salt, high solid particulate matter " in silicon treatment process is ultimate attainment
Separation of solid and liquid.
Ozonation technology is the hydroxyl radical free radical (normal electrode for having extremely strong oxidability using generation in reaction process
Current potential is 2.80) oxidation of organic compounds.Good with effect, reaction product is nontoxic, the good feature of operating characteristic.
Ozone is green strong oxidizer recognized in the world, has multiple functions, can especially improve difficult to degrade organic
The biological degradability of object.Its mechanism is to change original substance into handled substance by ozone oxidation atomic energy group
Molecular structure and performance, to improve its biological degradability.Ozone can aoxidize many organic matters, such as protein, amino acid, have
Machine amine, chain unsaturated compound, aromatic series, lignin, corrosion matter etc., at present in water process, using CODcr and BOD5 conduct
The index of these organic matters is measured, ozone will generate series of intermediate products, aoxidizing during aoxidizing these organic matters
While product can be higher, enough ozone outputs must be added in order to degrade very well so that oxidation operation is thorough, Cai Nengzhuan
Turn to inorganic matter.Secondly, such as surfactant (ABS), microorganism makes its decomposition, and ozone be easy to oxygenolysis these
Substance.
Finally, being evaporated under the high temperature conditions to high strong brine, all moisture are arranged in vapour form in addition to concentrate
System out, the very pure distilled water formed after condensing, and system is discharged in polluter in the form of solid salt after being dehydrated
System.Evaporation and crystallization system mainly includes two parts, and first half is thermal concentration section, and high strong brine is evaporated concentration, and 50%
Liquid can be converted into high-purity distilled water, the high quality distilled water of generation can enter clear water reserviors as product water.Latter half
For crystallizer, remaining 50% high concentration slurries are mainly gone out into sodium sulphate by further evaporating, concentrating and crystallizing in crystallizer
Product, mother liquor enter carnallite anhydration system and carry out drying and other treatment, output carnallite.
Evaporation and crystallization system uses mechanical vapor recompression technology (MVR), the recycling evaporation of falling film type mechanical vapor-compression
Technology is that processing high salt waste water is reliable in the world at present, one of effective solution scheme, process flow are as follows:
High strong brine to be processed initially enters raw water box, and pH value is adjusted to after 5.5~6.0, is pumped up into heat exchanger,
Water temperature is set to rise to boiling point.Salt water after heating passes through oxygen-eliminating device, removes oxygen, carbon dioxide, on-condensible gas etc. in water, subtracts
It is few that corrosion and scaling of evaporator system etc. is endangered.High strong brine enters the dense salt recycled inside inspissator kerve and inspissator
Water mixing, the distribution reservoir being then pumped to by circulation at the top of heat exchanger tube.Salt water passes through brine of the device at the top of heat exchanger tube
Distributor flows into pipe, is evenly distributed on the inner wall of pipe, flows downwardly to bottom grain in film-form.Part strong brine is along tube wall
When flowing down, the latent heat of the outer steam release of absorption tube and evaporate, steam and unevaporated strong brine drop to bottom grain together.
Steam in the grain of bottom enters vapour compression machine by demister, improves vapor (steam) temperature and pressure after compression.Compression
Steam enters on the outside of inspissator heat exchanger tube.The latent heat of overheat compressed steam is transmitted through heat exchange tube wall, to the temperature declined along inside pipe wall
Lower brine film heating is spent, part salt water evaporation is made.After compressed steam discharges latent heat, distillation is condensed into heat exchange pipe outer wall
Water.Distilled water declines along tube wall, after the accumulation of inspissator bottom, is delivered to plate heat exchanger by pump, distilled water flows through heat exchanger
When, the salt water newly flowed into is heated, most laggard distilled water tank is stand-by.
By discharging a small amount of strong brine, with the concentration of salt water in suitable control evaporation concentrator.
When using mechanical compression recycling evaporation technique processing waste water, when in addition to initial start-up, need outside exogenous steam, just
Often when operation, thermal energy needed for evaporating waste water discharges when mainly cooling with condensed water by steam condensation or the thermal energy of exchange provides.
In the process of running, it is lost without latent heat.It is only waste water, steam, condensed water in driving evaporator consumed by operational process
Electric energy consumed by circulation and flowing water pump, vapour compression machine and control system.When using steam as thermal energy, evaporation every thousand
Gram water need to consume 554 kilocalories of thermal energy.When using mechanical compression evaporation technique, typical energy consumption is that every kilogram of water of evaporation only needs 28,000
Card or less thermal energy.
Secondary steam through compressor compresses, is improved pressure and saturation temperature by MVR system, is re-fed into evaporator as heat
Source, substitution live steam recycles, while also eliminating secondary steam cooling system, and operating cost is relatively low.
The processing system for implementing the processing method of highly mineralized mine water reuse above-mentioned and resource utilization, by sequence phase
Raw water conditioning tank even, ultrafiltration apparatus, the first reverse osmosis unit, potassium permanganate composites, ion-exchanger, takes off high efficiency clarification tank
Carbon tower, nanofiltration device, the second reverse osmosis unit, reaction tank, micro-filtration, ozone oxidation pond and evaporation and crystallization system composition,
In, it is provided with sodium hydroxide administration device and soda ash administration device on the high efficiency clarification tank, is provided on potassium permanganate composites
Magnesium chloride administration device, sodium hydroxide administration device and soda ash administration device are provided with magnesium chloride administration device, hydrogen on reaction tank
Sodium oxide molybdena administration device and soda ash administration device.
Preferably, in the processing system of highly mineralized mine water reuse above-mentioned and resource utilization, high efficiency clarification tank and
The first change hole filtering pool is additionally provided between ultrafiltration apparatus, removal high efficiency clarification tank produces the suspended matter in water, potassium permanganate composites
The second change hole filtering pool is additionally provided between ion-exchanger, removal potassium permanganate composites produce the suspended matter in water.
Preferably, in the processing system of highly mineralized mine water reuse above-mentioned and resource utilization, the efficient clarification
The leading portion in pond is provided with preceding coagulating basin and back segment is additionally provided with rear coagulating basin, the sodium hydroxide dispensing on the high efficiency clarification tank
Device and sodium carbonate administration device are arranged on preceding coagulating basin, and sulfuric acid delivery device is additionally provided on rear coagulating basin for adjusting pH
Value, the potassium permanganate composites include the first potassium permanganate composites and the second potassium permanganate composites, the second potassium permanganate composites
Back segment is provided with highly dense pond clear water reserviors, and the nanofiltration device also has nanofiltration concentrate recirculation device, and nanofiltration concentrate recirculation device
Water outlet be set on the first potassium permanganate composites, utilize in water sulfate radical precipitating calcium ion formed calcium sulfate precipitation.Operation
When, the sludge of high efficiency clarification tank is discharged into the first sludge-tank, and the body refuse of high carbon acid calcium content is obtained after sludge dewatering, can be in body refuse coal
Mine boiler desulfurization system is as desulfurization absorbent reuse；The sludge of first potassium permanganate composites is discharged into the second sludge-tank, and sludge is de-
The body refuse that high calcium sulphate content is obtained after water is discharged into body refuse system；The sludge of second potassium permanganate composites is discharged into third sludge
Pond obtains the body refuse of high magnesium hydroxide and calcium carbonate content after sludge dewatering, be discharged into body refuse system.
Preferably, in the processing system of highly mineralized mine water reuse above-mentioned and resource utilization, the ultrafiltration dress
It is set to immersion ultrafiltration apparatus, ultrafiltration membrane therein is the hollow-fibre membrane in 0.02 micron of aperture；In the ion-exchanger
Ion exchange resin be Weak-acid cation exchange resin；The nanofiltration membrane aperture of the nanofiltration device be 1nm, described second
Reverse osmosis unit is disc tube reverse osmosis (dt-ro) device；The reaction tank includes the first reaction tank and the second reaction tank, the reaction tank
On sodium hydroxide administration device and soda ash administration device be set on the first reaction tank and magnesium chloride administration device is set to
On two reaction tanks；Filter membrane in the micro-filtration is tube microfiltration membrane.When operation, the first sludge-tank in sludge abjection
Water, first change hole filtering pool and ultrafiltration apparatus regeneration washing waste water can be discharged into raw water conditioning tank enter processing system in into
Row processing；The regeneration washing waste water of second change hole filtering pool and ion-exchanger, which can be discharged into the second potassium permanganate composites, to be entered
It is handled in processing system；Part nanofiltration device concentrated water and the second sludge-tank in sludge abjection water it is reflowable and with first
Enter to enter in processing system in the first potassium permanganate composites after the strong brine mixing that reverse osmosis unit generates and handle again.
Preferably, in the processing system of highly mineralized mine water reuse above-mentioned and resource utilization, the evaporation knot
Crystallographic system system is that falling film type mechanical vapor-compression recycles evaporation and crystallization system.
The beneficial effects of the utility model are: highly mineralized mine water reuse provided by the utility model and resource utilization
Processing system, preprocessed first that hardness is effectively reduced and forms precipitation of calcium carbonate, calcium carbonate recycles, and then carries out the
Desalination；Secondly concentrated to carry out secondary desalination again；It is most handled afterwards through evaporative crystallization, is truly realized waste water zero emission.
Rationally, system run all right, waste water treatment efficiency is high for the utility model treatment process and system flow design, energy saving, has
Effect reduces processing cost.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of the processing system of the reuse of the utility model highly mineralized mine water and resource utilization.
Appended drawing reference: 1- raw water conditioning tank, 2- high efficiency clarification tank, 3- ultrafiltration apparatus, the first reverse osmosis unit of 4-, 5- are highly dense
Spend sedimentation basin, 6- ion-exchanger, 7- decarbonizing tower, 8- nanofiltration device, the second reverse osmosis unit of 9-, 10- reaction tank, 11- micro-filtration
Device, 12- ozone oxidation pond, 13- evaporation and crystallization system, 14- first become hole filtering pool, and 15- second becomes hole filtering pool, before 201-
Coagulating basin, coagulating basin after 202-, the first potassium permanganate composites of 501-, the second potassium permanganate composites of 502-, the highly dense pond clear water of 503-
Pond, the first reaction tank of 1001-, the second reaction tank of 1002-.
Specific embodiment
Embodiment 1
A kind of processing system of highly mineralized mine water reuse and resource utilization, by be sequentially connected raw water conditioning tank 1,
High efficiency clarification tank 2, ultrafiltration apparatus 3, the first reverse osmosis unit 4, potassium permanganate composites 5, ion-exchanger 6, decarbonizing tower 7, nanofiltration
Device 8, the second reverse osmosis unit 9, reaction tank 10, micro-filtration 11, ozone oxidation pond 12 and evaporation and crystallization system 13 form,
In, it is provided with sodium hydroxide administration device and soda ash administration device on the high efficiency clarification tank 2, is arranged on potassium permanganate composites 5
There are magnesium chloride administration device, sodium hydroxide administration device and soda ash administration device, magnesium chloride dispensing dress is provided on reaction tank 10
It sets, sodium hydroxide administration device and soda ash administration device.
Embodiment 2
A kind of processing system of highly mineralized mine water reuse and resource utilization, by be sequentially connected raw water conditioning tank 1,
High efficiency clarification tank 2, ultrafiltration apparatus 3, the first reverse osmosis unit 4, potassium permanganate composites 5, ion-exchanger 6, decarbonizing tower 7, nanofiltration
Device 8, the second reverse osmosis unit 9, reaction tank 10, micro-filtration 11, ozone oxidation pond 12 and evaporation and crystallization system 13 form,
In, it is provided with sodium hydroxide administration device and soda ash administration device on the high efficiency clarification tank 2, is arranged on potassium permanganate composites 5
There are magnesium chloride administration device, sodium hydroxide administration device and soda ash administration device, magnesium chloride dispensing dress is provided on reaction tank 10
It sets, sodium hydroxide administration device and soda ash administration device.
Be additionally provided with the first change hole filtering pool 14 between high efficiency clarification tank 2 and ultrafiltration apparatus 3, potassium permanganate composites 5 and from
The second change hole filtering pool 15 is additionally provided between sub- exchanger 6.
Embodiment 3
A kind of processing system of highly mineralized mine water reuse and resource utilization, by be sequentially connected raw water conditioning tank 1,
High efficiency clarification tank 2, ultrafiltration apparatus 3, the first reverse osmosis unit 4, potassium permanganate composites 5, ion-exchanger 6, decarbonizing tower 7, nanofiltration
Device 8, the second reverse osmosis unit 9, reaction tank 10, micro-filtration 11, ozone oxidation pond 12 and evaporation and crystallization system 13 form,
In, it is provided with sodium hydroxide administration device and soda ash administration device on the high efficiency clarification tank 2, is arranged on potassium permanganate composites 5
There are magnesium chloride administration device, sodium hydroxide administration device and soda ash administration device, magnesium chloride dispensing dress is provided on reaction tank 10
It sets, sodium hydroxide administration device and soda ash administration device.
Be additionally provided with the first change hole filtering pool 14 between high efficiency clarification tank 2 and ultrafiltration apparatus 3, potassium permanganate composites 5 and from
The second change hole filtering pool 15 is additionally provided between sub- exchanger 6.
The leading portion of the high efficiency clarification tank 2 is provided with preceding coagulating basin 201 and back segment is additionally provided with rear coagulating basin 202, institute
The sodium hydroxide administration device and sodium carbonate administration device stated on high efficiency clarification tank 2 are arranged on preceding coagulating basin 201, rear coagulating basin
Sulfuric acid delivery device is additionally provided on 202, the potassium permanganate composites 5 include that the first potassium permanganate composites 501 and second are highly dense
Sedimentation basin 502 is spent, the back segment of the second potassium permanganate composites 502 is provided with highly dense pond clear water reserviors 503, and the nanofiltration device 8 goes back band
There is nanofiltration concentrate recirculation pipeline, and the water outlet of nanofiltration concentrate recirculation pipeline is set on the first potassium permanganate composites 501.
Embodiment 4
A kind of processing system of highly mineralized mine water reuse and resource utilization, by be sequentially connected raw water conditioning tank 1,
High efficiency clarification tank 2, ultrafiltration apparatus 3, the first reverse osmosis unit 4, potassium permanganate composites 5, ion-exchanger 6, decarbonizing tower 7, nanofiltration
Device 8, the second reverse osmosis unit 9, reaction tank 10, micro-filtration 11, ozone oxidation pond 12 and evaporation and crystallization system 13 form,
In, it is provided with sodium hydroxide administration device and soda ash administration device on the high efficiency clarification tank 2, is arranged on potassium permanganate composites 5
There are magnesium chloride administration device, sodium hydroxide administration device and soda ash administration device, magnesium chloride dispensing dress is provided on reaction tank 10
It sets, sodium hydroxide administration device and soda ash administration device.
Be additionally provided with the first change hole filtering pool 14 between high efficiency clarification tank 2 and ultrafiltration apparatus 3, potassium permanganate composites 5 and from
The second change hole filtering pool 15 is additionally provided between sub- exchanger 6.
The leading portion of the high efficiency clarification tank 2 is provided with preceding coagulating basin 201 and back segment is additionally provided with rear coagulating basin 202, institute
The sodium hydroxide administration device and sodium carbonate administration device stated on high efficiency clarification tank 2 are arranged on preceding coagulating basin 201, rear coagulating basin
Sulfuric acid delivery device is additionally provided on 202, the potassium permanganate composites 5 include that the first potassium permanganate composites 501 and second are highly dense
Sedimentation basin 502 is spent, the back segment of the second potassium permanganate composites 502 is provided with highly dense pond clear water reserviors 503, and the nanofiltration device 8 goes back band
There is nanofiltration concentrate recirculation pipeline, and the water outlet of nanofiltration concentrate recirculation pipeline is set on the first potassium permanganate composites 501.
The ultrafiltration apparatus 3 is immersion ultrafiltration apparatus, and ultrafiltration membrane therein is the doughnut in 0.02 micron of aperture
Film；Ion exchange resin in the ion-exchanger 6 is Weak-acid cation exchange resin；The nanofiltration device 8 is received
Filter sizes are 1nm, and second reverse osmosis unit 9 is disc tube reverse osmosis (dt-ro) device；The reaction tank 10 includes first anti-
Pond 1001 and the second reaction tank 1002 are answered, the sodium hydroxide administration device and soda ash administration device on the reaction tank 10 are set to
On first reaction tank 1001 and magnesium chloride administration device is set on the second reaction tank 1002；Filter in the micro-filtration 11
Film is tube microfiltration membrane.
Embodiment 5
A kind of processing system of highly mineralized mine water reuse and resource utilization, by be sequentially connected raw water conditioning tank 1,
High efficiency clarification tank 2, ultrafiltration apparatus 3, the first reverse osmosis unit 4, potassium permanganate composites 5, ion-exchanger 6, decarbonizing tower 7, nanofiltration
Device 8, the second reverse osmosis unit 9, reaction tank 10, micro-filtration 11, ozone oxidation pond 12 and evaporation and crystallization system 13 form,
In, it is provided with sodium hydroxide administration device and soda ash administration device on the high efficiency clarification tank 2, is arranged on potassium permanganate composites 5
There are magnesium chloride administration device, sodium hydroxide administration device and soda ash administration device, magnesium chloride dispensing dress is provided on reaction tank 10
It sets, sodium hydroxide administration device and soda ash administration device.
Be additionally provided with the first change hole filtering pool 14 between high efficiency clarification tank 2 and ultrafiltration apparatus 3, potassium permanganate composites 5 and from
The second change hole filtering pool 15 is additionally provided between sub- exchanger 6.
The leading portion of the high efficiency clarification tank 2 is provided with preceding coagulating basin 201 and back segment is additionally provided with rear coagulating basin 202, institute
The sodium hydroxide administration device and sodium carbonate administration device stated on high efficiency clarification tank 2 are arranged on preceding coagulating basin 201, rear coagulating basin
Sulfuric acid delivery device is additionally provided on 202, the potassium permanganate composites 5 include that the first potassium permanganate composites 501 and second are highly dense
Sedimentation basin 502 is spent, the back segment of the second potassium permanganate composites 502 is provided with highly dense pond clear water reserviors 503, and the nanofiltration device 8 goes back band
There is nanofiltration concentrate recirculation pipeline, and the water outlet of nanofiltration concentrate recirculation pipeline is set on the first potassium permanganate composites 501.
The ultrafiltration apparatus 3 is immersion ultrafiltration apparatus, and ultrafiltration membrane therein is the doughnut in 0.02 micron of aperture
Film；Ion exchange resin in the ion-exchanger 6 is Weak-acid cation exchange resin；The nanofiltration device 8 is received
Filter sizes are 1nm, and second reverse osmosis unit 9 is disc tube reverse osmosis (dt-ro) device；The reaction tank 10 includes first anti-
Pond 1001 and the second reaction tank 1002 are answered, the sodium hydroxide administration device and soda ash administration device on the reaction tank 10 are set to
On first reaction tank 1001 and magnesium chloride administration device is set on the second reaction tank 1002；Filter in the micro-filtration 11
Film is tube microfiltration membrane.
The evaporation and crystallization system 13 is that falling film type mechanical vapor-compression recycles evaporation and crystallization system.
The course of work of the processing system of highly mineralized mine water reuse and resource utilization in the utility model are as follows: raw water
After initially entering the adjusting flow of raw water conditioning tank 1, sodium hydroxide and soda ash are added into high efficiency clarification tank 2, and in preceding coagulating basin
201 add sodium hydroxide and sodium carbonate, form precipitation of calcium carbonate and recycle, rear coagulating basin 201 adds sulphur acid for adjusting pH, efficiently
The sludge of clarifying basin 2 is discharged into the first sludge-tank, and the body refuse of high carbon acid calcium content is obtained after sludge dewatering, can be in body refuse coal mine boiler
As desulfurization absorbent reuse, the water of abjection is reflowable to be handled again to raw water conditioning tank 1 desulphurization system；High efficiency clarification tank
2 water outlets enter first and become the removal suspended impurity of hole filtering pool 14, and water outlet enters suspended matter, the colloid that ultrafiltration apparatus 3 is gone in water removal
Particle, bacterium and most of virus and partial organic substances；Ultrafiltration apparatus 3 produces water and enters the first reverse osmosis unit 4 reduction raw water
Middle salt content, wherein the regeneration washing waste water of the first change hole filtering pool 14 and ultrafiltration apparatus 3 is discharged into raw water conditioning tank 1 and enters place
Handled in reason system, the first reverse osmosis unit 4 produce after water discharge can reuse, strong brine goes successively to potassium permanganate composites 5
Processing；The sludge of first potassium permanganate composites 501 is discharged into the second sludge-tank, and the mud of high calcium sulphate content is obtained after sludge dewatering
Slag is discharged into body refuse system；Second potassium permanganate composites 502 add magnesium chloride, sodium hydroxide and soda ash, and the sludge of generation is discharged into
Third sludge-tank obtains the body refuse of high magnesium hydroxide and calcium carbonate content after sludge dewatering, be discharged into body refuse system, and water outlet enters
In highly dense pond clear water reserviors 503, the second change hole filtering pool 15 removal suspended impurity is then entered back into, then through ion-exchanger 6 into one
The regeneration washing waste water of step softening, the second change hole filtering pool 15 and ion-exchanger 6 can be discharged into the second potassium permanganate composites 502
It is handled again, the water outlet of ion-exchanger 6 sloughs carbon dioxide through decarbonizing tower 7, and then it is further to enter nanofiltration device 8 for water outlet
It is condensed into high strong brine, high strong brine is concentrated again through the second reverse osmosis unit 9, and nanofiltration device 8 and the second reverse osmosis unit 9 produce
Water discharge after can reuse, part nanofiltration device 8 generate concentrated water with high salt and the second sludge-tank institute in sludge deviate from water can return
It flows and enters in the first potassium permanganate composites 501 after being mixed with the strong brine that the first reverse osmosis unit 4 generates and handled again；
The high strong brine of second reverse osmosis unit, 9 output goes successively to add sodium carbonate and sodium hydroxide again in the first reaction tank 1001
Softening, enters back into the second reaction tank 1002 and adds magnesium chloride, be separated by solid-liquid separation subsequently into micro-filtration 11 and further gone
Except total silicon, the water outlet of micro-filtration 11 enters back into ozone oxidation pond 12 and removes organic matter through ozone oxidation, eventually enters into evaporative crystallization
System 13 is evaporated concentration and crystallization generates distilled water and sodium sulphate, and waste water is disposed, and realizes " zero-emission ".
To verify the utility model treatment process and processing system, inventor is handled in certain mine according to the utility model
The scheme of technique and processing system is installed, and mine water water quality difference is as shown in table 1, belongs to high slat-containing wastewater, cannot
Reach reuse requirement.
Certain the mine water water quality of table 1
After the utility model treatment process and processing system processing, water quality is as shown in table 2:
2 effluent quality of table
The sulfate crystal salt of output, chemical formula Na after processing2SO4, relative density 2.68,884 DEG C of fusing point, boiling point 1404
DEG C, it is inorganic compound, is dissolved in water, do not dissolve in ethyl alcohol, meet GB/T6009-2014 industrial sulphuric acid sodium I class Grade A standard, provides
Sourceization utilizes, and reaches wastewater zero discharge.
Claims (5)
1. the processing system of a kind of highly mineralized mine water reuse and resource utilization, which is characterized in that by the original being sequentially connected
Water conditioning tank (1), high efficiency clarification tank (2), ultrafiltration apparatus (3), the first reverse osmosis unit (4), potassium permanganate composites (5), ion
It is exchanger (6), decarbonizing tower (7), nanofiltration device (8), the second reverse osmosis unit (9), reaction tank (10), micro-filtration (11), smelly
Oxygen oxidation pond (12) and evaporation and crystallization system (13) composition, wherein sodium hydroxide dispensing is provided on the high efficiency clarification tank (2)
Device and soda ash administration device are provided with magnesium chloride administration device, sodium hydroxide administration device and pure on potassium permanganate composites (5)
Alkali administration device is provided with magnesium chloride administration device, sodium hydroxide administration device and soda ash administration device on reaction tank (10).
2. the processing system of highly mineralized mine water reuse according to claim 1 and resource utilization, which is characterized in that
Be additionally provided with the first change hole filtering pool (14) between high efficiency clarification tank (2) and ultrafiltration apparatus (3), potassium permanganate composites (5) and from
The second change hole filtering pool (15) is additionally provided between sub- exchanger (6).
3. the processing system of highly mineralized mine water reuse according to claim 2 and resource utilization, which is characterized in that
The leading portion of the high efficiency clarification tank (2) is provided with preceding coagulating basin (201) and back segment is additionally provided with rear coagulating basin (202), described
Sodium hydroxide administration device and sodium carbonate administration device on high efficiency clarification tank (2) are arranged on preceding coagulating basin (201), rear coagulation
Be additionally provided with sulfuric acid delivery device on pond (202), the potassium permanganate composites (5) include the first potassium permanganate composites (501) and
Second potassium permanganate composites (502), the back segment of the second potassium permanganate composites (502) is provided with highly dense pond clear water reserviors (503), described
Nanofiltration device (8) also has nanofiltration concentrate recirculation pipeline, and the water outlet of nanofiltration concentrate recirculation pipeline is set to the first high density
On sedimentation basin (501).
4. the processing system of highly mineralized mine water reuse according to claim 1 and resource utilization, which is characterized in that
The ultrafiltration apparatus (3) is immersion ultrafiltration apparatus, and ultrafiltration membrane therein is the hollow-fibre membrane in 0.02 micron of aperture；It is described
Ion-exchanger (6) in ion exchange resin be Weak-acid cation exchange resin；The nanofiltration membrane of the nanofiltration device (8)
Aperture is 1nm, and second reverse osmosis unit (9) is disc tube reverse osmosis (dt-ro) device；The reaction tank (10) includes first anti-
Ying Chi (1001) and the second reaction tank (1002), sodium hydroxide administration device and soda ash administration device on the reaction tank (10)
It is set on the first reaction tank (1001) and magnesium chloride administration device is set on the second reaction tank (1002)；The micro-filtration dress
Setting the filter membrane in (11) is tube microfiltration membrane.
5. the processing system of highly mineralized mine water reuse according to claim 1 and resource utilization, which is characterized in that
The evaporation and crystallization system (13) is that falling film type mechanical vapor-compression recycles evaporation and crystallization system.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109231632A (en) * | 2018-11-05 | 2019-01-18 | 华电水务工程有限公司 | The processing method and system of a kind of highly mineralized mine water reuse and resource utilization |
| CN114687714A (en) * | 2022-04-12 | 2022-07-01 | 中国矿业大学 | Nano-particle composite low-salinity water-enhanced CO2Method of injection capability |
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2018
- 2018-11-05 CN CN201821810061.4U patent/CN209411998U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109231632A (en) * | 2018-11-05 | 2019-01-18 | 华电水务工程有限公司 | The processing method and system of a kind of highly mineralized mine water reuse and resource utilization |
| CN114687714A (en) * | 2022-04-12 | 2022-07-01 | 中国矿业大学 | Nano-particle composite low-salinity water-enhanced CO2Method of injection capability |
| CN114687714B (en) * | 2022-04-12 | 2023-06-16 | 中国矿业大学 | Nanoparticle composite low-mineralization water for improving CO 2 Method for injection capability |
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