CN202265468U - Equipment for deeply treating and recovering heavy metal waste water with zero discharge - Google Patents
Equipment for deeply treating and recovering heavy metal waste water with zero discharge Download PDFInfo
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- CN202265468U CN202265468U CN2011203947202U CN201120394720U CN202265468U CN 202265468 U CN202265468 U CN 202265468U CN 2011203947202 U CN2011203947202 U CN 2011203947202U CN 201120394720 U CN201120394720 U CN 201120394720U CN 202265468 U CN202265468 U CN 202265468U
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Abstract
The utility model discloses equipment for deeply treating and recovering heavy metal waste water with zero discharge. The equipment is characterized by comprising pre-treatment equipment, a first cartridge filter (5), ultrafiltration equipment (6), an ultrafiltration water pond (7), an active carbon filter (8), a second cartridge filter (9), a reverse osmosis device (10) and a reusable water pond (11), wherein two back flush water outlets of the ultrafiltration water pond (7) are connected with the back flush water inlet of the ultrafiltration equipment (6) and the back flush water inlet of the active carbon filter (8) respectively; and the back-flush water outlet of the reusable water pond (11) is connected with the back flush water inlet of the reverse osmosis device (10). The equipment has the advantages of large water yield, high recovering efficiency, small salt yield and clean recovery of mud residues.
Description
Technical field
The utility model relates to the environmental protection equipment field, especially a heavy metal wastewater advanced treatment zero release recovery system.The utility model is mainly used in the reuse project of heavy metal ion-containing waste water and heavy metal ion, the reuse project of saliferous factory effluent, the mixed bed at pure water preparation station, the reuse project of negative and positive bed regenerative wastewater, and the desalination reuse project of other engineering.
Single devices (pressure type water purifier) in the utility model can be used as the main processing facility at water supply purification station, directly surface water such as river, reservoir water is treated to water of productive use, and ultra-filtration equipment can be used as the advanced treatment equipment of various middle water treatments.R-o-can be used as the pre-treatment that ultrapure water is handled, low pressure boiler to water processing establishment etc.
Background technology
The waste water that heavy metal wastewater thereby is mainly discharged from enterprises such as mine, smelting, electrolysis, plating, agricultural chemicals, medicine, paint, pigment.If not to heavy metal containing wastewater treatment, will serious environment pollution.
Because heavy metal can not decompose destruction, and can only shift their location and the physics and the chemical form that change them, reach the purpose of removing heavy metals.For example, in the wastewater treatment process, after chemical precipitation was handled, the heavy metal in the waste water was transformed into insoluble platform thing and precipitates from the dissolved ionic forms, from water, transfers in the mud; After ion exchange treatment, the heavy metal ion in the waste water is transferred on the ion exchange resin, after regeneration, transfers to the regeneration waste liquid from ion exchange resin again.
So-called " zero release " be meant ad infinitum reduce pollutent with can source emission until the activity that is zero: promptly utilize cleaner production; 3R (Reduce; Reuse Recycle) and technology such as ecological industry, realizes the complete recycle to natural resources; Thereby do not give atmosphere, water body and soil are left over any waste.
Existing heavy metal treatment facility often can only be handled recovery to a heavy metal species, perhaps handles according to the waste water of specific water quality, can not realize simultaneously multiple character waste water being handled recovery, and actual effect is barely satisfactory.
Summary of the invention
The purpose of the utility model is to provide a heavy metal wastewater advanced treatment zero release recovery system, and this equipment has that water production rate is big, organic efficiency is high, goes out the advantage that the salt amount is little, the body refuse cleaning reclaims.
The technical scheme of the utility model is:
One heavy metal wastewater advanced treatment zero release recovery system comprises the pre-processing device that connects successively; First security personnel's strainer, ultrafiltration apparatus, ultrafiltration pond, activated charcoal filter, second security personnel strainer, reverse osmosis unit and the reuse pool; Two back flushing water outlets in said ultrafiltration pond are connected with the back flushing water-in of ultrafiltration apparatus and the back flushing water-in of activated charcoal filter respectively, and the back flushing water outlet of reuse pool is connected with the back flushing water-in of reverse osmosis unit.
Said pre-processing device comprises the equalizing tank that once connects, full-automatic water purifier, intermediate pool and more medium filter, and the back flushing water outlet of said intermediate pool is connected with the top water-in of more medium filter.
The water port of said full-automatic water purifier connects thickner through suction pit, and the mud discharging mouth of thickner connects diaphragm filter press; The water port of thickner and diaphragm filter press is connected equalizing tank respectively.Diaphragm filter press concentrates the body refuse outward transport of discharging.
The rinse water water outlet of said ultrafiltration apparatus is connected with the cleaning water tank, and the water outlet that cleans water tank connects the water-in of the 3rd security personnel's strainer, and the water outlet of the 3rd security personnel's strainer connects the water-in of ultrafiltration apparatus and reverse osmosis unit respectively; The reuse water outlet of reverse osmosis unit connects cleans water tank.
The dense water out of said reverse osmosis unit connects dense pond.
Said full-automatic water purifier is connected with full-automatic water purifier chemicals dosing plant, and this chemicals dosing plant can select to add sterilant, NaClO, PAC, PAM medicament; More medium filter is connected with the more medium filter chemicals dosing plant, and this chemicals dosing plant can select to add the PAC medicament.
Said ultrafiltration apparatus all is connected the ultrafiltration chemicals dosing plant with the ultrafiltration pond, and this chemicals dosing plant can select to add NaClO, NaOH, HCL medicament; Said reverse osmosis unit is connected with the reverse osmosis unit chemicals dosing plant, and this chemicals dosing plant can select to add Scale inhibitors, HCL medicament.
The beneficial effect of the utility model is:
The heavy metal wastewater thereby advanced treatment zero release recovery system of the utility model is applied widely, easy and simple to handle; Treatment capacity is big, cost performance is high, can require carry out type selecting according to water quality, the water yield, has also that service life of equipment is long, maintenance rate is low; Normal temperature regeneration, the characteristics that energy charge is low; Can realize recycling reducing production costs.Helping metal-salt reclaims.After the purified recovery system of waste pickle liquor is handled, can realize wastewater zero discharge.Be a kind of cleaning production, energy-saving and emission-reduction, the equipment of environmental protection.
This utility model mainly is divided into pre-treatment and desalting treatment, high-efficiency evaporating are handled and sludge treatment four major parts; Heavy metal ion, suspended substance, turbidity and the part high volence metal ion that contains in the water into mainly removed in pre-treatment; Above impurity is in effects such as pressure type water purifier device interior flocculation sediment, capture, bridge formations, and under the effect of double-deck filler of labyrinth type and inner device for separating mud and water, the suspended substance sedimentation of feasible flocculation larger particles is in the bucket of filler bottom; Drain into sludge sump through the automatic mud removing valve; Remaining tiny flco filters through two-layered medium, and the turbidity that guarantees water outlet is in 10NTU, and heavy metal ion content is in 1mg/L.Guarantee the normal operation of subsequent disposal facility; The water outlet of pressure filter is further removed suspended substance and various particulate matter in the water through more medium filter; Guarantee that delivery turbidity is in 3NTU; Guarantee the long-term stability operation of ultra-filtration equipment, reduce the backwash frequency of ultra-filtration equipment and the number of times that chemistry is strengthened backwash, practice thrift the running cost and the water consumption water yield.The ultrafiltration water outlet is guaranteed gac water outlet contents of residual chlorine below 0.1mg/L through activated charcoal filter, and organic content is guaranteed the steady running of reverse osmosis system less than 0.3mg/L.The dense water of first-stage reverse osmosis gets into dense water reverse osmosis system, improves the recovery of system.In total system, the pH value before the control ultrafiltration apparatus is about 9, and PH is in 7 in the gac water outlet, adds medicaments such as corresponding sterilant simultaneously, can guarantee the secular steady running of system.
Description of drawings
Fig. 1 is the process flow sheet of the utility model.
Among the figure: 1 for equalizing tank, 2 for full-automatic water purifier, 3 for intermediate pool, 4 for more medium filter, 5 be first security personnel's strainer, 6 for ultrafiltration apparatus, 7 for the ultrafiltration pond, 8 for activated charcoal filter, 9 be second security personnel's strainer, 10 for reverse osmosis unit, 11 for reuse pool, 12 for suction pit, 13 for thickner, 14 for diaphragm filter press, 15 be that the 3rd security personnel's strainer, 17 is dense pond for cleaning water tank, 16.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described:
Like Fig. 1; One heavy metal wastewater advanced treatment zero release recovery system comprises the pre-processing device that connects successively; First security personnel's strainer 5, ultrafiltration apparatus 6, ultrafiltration pond 7, activated charcoal filter 8, second security personnel strainer 9, reverse osmosis unit 10 and the reuse pool 11; Two back flushing water outlets in said ultrafiltration pond 7 are connected with the back flushing water-in of ultrafiltration apparatus 6 and the back flushing water-in of activated charcoal filter 8 respectively, and the back flushing water outlet of reuse pool 11 is connected with the back flushing water-in of reverse osmosis unit 10.
Pre-processing device comprises the equalizing tank 1 that once connects, full-automatic water purifier 2, intermediate pool 3 and more medium filter 4, and the back flushing water outlet of said intermediate pool 3 is connected with the top water-in of more medium filter 4.
The water port of full-automatic water purifier 2 connects thickner 13 through suction pit 12, and the mud discharging mouth of thickner 13 connects diaphragm filter press 14; The water port of thickner 13 and diaphragm filter press 14 is connected equalizing tank 1 respectively.Diaphragm filter press 14 concentrates the body refuse outward transport of discharging.
The rinse water water outlet of ultrafiltration apparatus 6 is connected with and cleans water tank 15, and the water outlet that cleans water tank 15 connects the water-in of the 3rd security personnel's strainer 16, and the water outlet of the 3rd security personnel's strainer 16 connects the water-in of ultrafiltration apparatus 6 and reverse osmosis unit 10 respectively; The reuse water outlet of reverse osmosis unit 10 connects cleans water tank 15.
The dense water out of reverse osmosis unit 10 connects dense pond 17.
Full-automatic water purifier 2 is connected with full-automatic water purifier chemicals dosing plant, and this chemicals dosing plant can select to add sterilant, NaClO, PAC, PAM medicament; More medium filter 4 is connected with the more medium filter chemicals dosing plant, and this chemicals dosing plant can select to add the PAC medicament.
The main technical process of the utility model is following: heavy metal wastewater thereby at first flow to equalizing tank 1, raises to full-automatic water purifier 2 with pump, and after coagulation, deposition, filtration, water outlet is raised to more medium filter 4 with pump from flowing to intermediate pool 3 again, removes suspended substance.More medium filter 4 water outlets are gone into ultra-filtration equipment 6 through security personnel's strainer 5 is laggard, remove suspended substance, particulate, colloid, larger molecular organics and bacterium etc. in the water.Ultra-filtration equipment 6 water outlets are raised to activated charcoal filter 8 by pump from flowing to ultrafiltration pond 7 again, further remove organism and chlorine residue.Activated charcoal filter 8 water outlets get into reverse osmosis unit 10 behind security personnel's strainer 7, finally carry out desalting treatment, and water carries out reuse after the reverse-osmosis treated, and the dense water in the dense pond 7 is used for flushing cinder.
The effluent quality of the heavy metal wastewater thereby advanced treatment zero release recovery system of the utility model can reach the water outlet saltiness less than 100mg/l, and the equipment producing water ratio is greater than 71%.
Handling the back effluent quality is superior to: integrated wastewater discharge standard GB8978-1996 primary standard; I class water area water-quality standard among the surface water quality standard GB3838-2002; Iron And Steel Industry pollution discharge standard (GB13456-92) first discharge standard; Code for design of industrial recirculating cooling water treatment GB50050-2007 water quality requirement standard; Simultaneously, this system's effluent quality standard is greatly because this factory's water of productive use water quality standard.
Inlet and outlet water water quality is as shown in table 1:
Table 1. Inlet and outlet water water quality contrast table (unit: every liter of milligram)
| Sequence number | Ca | Mg | Pb | Cu | Zn | Fe | As | SO 4 2- | CL - |
| |
1610 | 94.5 | 0.4 | 0.2 | 9.9 | 0.01 | 21.8 | 731 | 117 |
| Water inlet appearance 2 | 1620 | 92.8 | 0.4 | 0.2 | 10.08 | 0.2 | 21.8 | 712 | 116 |
The equipment operating parameter:
1, the water inlet electricity is led: 6200 μ s/cm
2, water inlet TDS:3300PPm
3, water inlet redox potential: 17mVORP
4, dense water power is led: 46320 μ s/cm TDS:23120PPm
5, water outlet TDS:34PPm
Can find out that from above service data the high volence metal ion of high density and heavy metal ion are through after this system handles, effluent quality is superior to water of productive use, can directly be used for the source water of ultrapure water preparation.
The utilization of novel process successfully depends primarily on the improvement with pretreatment system equipment; Pressure boost formula water purifier in pretreatment system; Can effectively remove heavy metal ion and high volence metal ion in the sewage; Reduced requirement greatly, under the condition of water quality of broad, can produce and be stable water quality, guaranteed the steady running of subsequent technique influent quality.Transform the micro-filtration of previous technology as ultrafiltration, guaranteed that further pretreated water water quality can satisfy the operation of system for a long time.
The utility model is handled and is contained high density heavy metal ion (As=21.8mg/L) and handle back water reuse boiler, contains the dense water of superelevation saltiness through direct landfill after the triple-effect evaporator crystallization, and condensed water gets into produces water tank, gets into art breading, realizes the zero release of waste water.The utility model is mainly used in that backwater advanced treatment and reclamation after the dirty sour WWT, precious metal and other have that the valency ionic reclaims, high temperature ultra's desalination and reuse, the utility model also can handle turbidity below the 500NTU, suspended substance is at the surface water below the 100mg/L (can directly be used for after the processing producing).
The utility model has four big technological cores:
(1) adopt the pressure type water purifier as pre-treatment sedimentation and filtration equipment; Before the pressure type water purifier, drop into flocculation agent and lime in the line mixer; Carry out the content that thorough mixing can reduce this heavy metal ions in wastewater afterwards effectively through adding the lime warp with waste water; And play the effect of alkalization remollescent, alleviate the processing load that subsequent technique is removed heavy metal ion and calcium ions and magnesium ions; After adding the reaction of flocculation agent and waste water thorough mixing, form flco, precipitate with filtrating area in the settling region of pressure type water purifier effectively and filters, most of suspended substance of removing in the water is the subsequent ultrafiltration device good condition of creation of intaking.This model water purifier floor space is little, highly low, the casing whole height is 3 meters, handles big, the instantaneous influent turbidity of load and can reach that 3000NTU, the shock-resistant ability of meeting are strong, equipment is fully automatic operation, need not the special messenger guard; Maintenance is convenient; Device interior loss parts are few, can accomplish the maintenance of all sites of equipment in 1 hour, and intake pressure only needs 0.07Mpa; Power is little, and loss of head is low.This equipment integral reaction principle is functions such as flocculation, deposition, heavy metal ion seizure, filtration; The water distribution of bottom is different from common " non-" font water distribution manner; Adjust according to the water inlet pipe cloth water pressure and the water yield, adopt the bulk loop water distribution, the spacing of caliber through water distributor and water-distributing device guarantees the homogeneity of whole water distribution simultaneously; Guarantee that water distribution point outlet flow velocity is identical; Reduce the water distribution zone and does not wait the eddy current that causes because of flow velocity, simultaneously, the setting of water distribution exit angle, the assurance water distribution can not produce deposition.This equipment is arranged on the full end of treatment process system; The turbidity of strict control water outlet and the content of heavy metal ion; The subsequent disposal facility is ultrafiltration system, first-stage reverse osmosis system, dense water reverse osmosis system, triple effect evaporation system and other auxiliary facility, and the normal operation of system also must be controlled well does not have an operating parameter of equipment import and export.
(2) adopt the main process of ultrafiltration system+first-stage reverse osmosis as degree of depth reuse treatment process.Ultrafiltration technology and reverse osmosis process be as international sophisticated pretreatment technology and desalinating process, successful being applied in all trades and professions.Exist with respect to common desalinating process that floor space is big, not high or the like the shortcoming of complicated operation, automation technolo control degree; And ultra-filtration equipment is a kind of good pretreatment filtering device; Can remove suspended substance in the water, larger molecular organics etc. effectively; Can effectively guarantee to get into the water quality of reverse osmosis system, the ultra-filtration equipment delivery turbidity can be controlled at about 0.2NTU.And reverse osmosis unit has the ratio of desalinization of superelevation, and the ratio of desalinization of single film can reach 99.7%, and the reverse osmosis unit ratio of desalinization can be removed various ions effectively up to more than 99%, thereby guarantees that effluent quality reaches the requirement of reuse.And the process combination of ultrafiltration system+reverse osmosis system can reduce floor space effectively; Automatic controlling level is high; Can reach unattended purpose, reduce operative employee's labour intensity effectively, and produce a large amount of regenerative wastewater so unlike ion-exchanger.
(3) adopt the technology of dense water r-o-+triple-effect evaporator to handle the dense water that the first-stage reverse osmosis device produces, can directly realize the recycling of the dense water of first-stage reverse osmosis device.The dense water that the first-stage reverse osmosis device produces promotes after can directly collecting with dense water tank and goes dense water r-o-to handle because saltiness is higher, and impurity is less.The fresh water that dense water r-o-produces directly gets into the technology reuse stage.Dense water reverse osmosis unit has very high operating pressure owing to be to be used for handling the dense water that the first-stage reverse osmosis device produces, and has all proposed very high requirement for equipment making and technology operation.Certainly different dense water reverse osmosis units is when coming water water quality not simultaneously, and the pressure of operation is different.Up to 4.80Mpa, and the operating pressure of dense water reverse osmosis unit has only 1.8Mpa in south, the Yunnan phosphorylcholine group power plant advanced treatment process like the operating pressure of dense water reverse osmosis unit in the Yunnan Xin Li company white titanium pigment degree of depth waste water treatment process.Concerning for dense water reverse osmosis unit, selecting HPP and the unlike material different pressures of unlike material different pressures for use and adapt to the reverse osmosis membrane of different saltiness according to result calculated.The back segment of this technology adopts triple-effect evaporator to handle the dense water that dense water reverse osmosis unit produces, because the dense water saltiness superelevation that dense water reverse osmosis unit produces can't adopt the technology of normal conventional to handle.Select triple-effect evaporator separate fresh and crystallisate effectively for use, fresh water can directly be sent into the technology reuse, and the crystallisate recycling can be used for different industries, such as is used for building trade, thereby realizes utilization of waste material, produces economic benefit.(4) this system removes with triple-effect evaporator and carries out all can carrying out the systemic circulation utilization outside the dense water that the dense water r-o-of the part of concentration and evaporation produces.The backwash water that pressure type water purifier and strainer produce enters in the wastewater equalization pond, does not efflux, and carries out sedimentation through the natural sedimentation pond of equalizing tank and front end setting, and the mud of generation carries out press filtration to be handled.The spoil disposal water that the pressure type water purifier produces is concentrated through mud, press filtration is handled, and supernatant is back in the equalizing tank.Dense water and backwash water that ultra-filtration equipment produces are back to equalizing tank.Therefore whole technology does not have efflux wastewater, and the mud and the xln after the triple effect evaporation after press filtration, this technology can be accomplished the realization zero release.
The utility model innovative point:
According to reverse osmosis design standard and relevant operating requirement, the reverse osmosis desalination water inlet is had relatively high expectations, and each item heavy metal and high volence metal ion water inlet are no more than 0.5mg/L; Strictness has limited the influent quality requirement, through the control of pressure type water purifier and technology operating parameter is set, can the heavy metal and the high volence metal ion content of influent quality be controlled to more than the 10mg/L; And after draining enters receiving water body after the dirty sour WWT; Heavy metal ion is enrichment in receiving water body, is detrimental to health through the food chain effect, and general heavy metal ion can natural degradation; Pollution transportation the most at last, the havoc ecotope.
Common desalination utility model generally is used for boiler feedwater and the cooling tower supplementary feed requires strict water of productive use to other.Basically there is not process for producing sewage precedent; The successful Application of utility model; For sewage zero-discharge and the waste water recycling of realizing enterprise provides a good conditions, the water after this utility model is handled can directly be used for source water and the cooling tower supplementary feed at low pressure boiler supplementary feed and high purity water preparation station or the like.
Technically, adopt the pressure type water purifier to control each item water-quality guideline of pretreatment stage effectively, adopt the reverse osmosis system desalination; The total salinity that guarantees water outlet is lower than 100mg/L; Dense water reverse osmosis system improves the Wastewater Recovery rate, and triple-effect evaporator is handled last dense water, and the dense water that saltiness is up to ten thousand concentrates the back and mud directly is transported to the direct landfill of landfill yard; In the whole utility model; Except mud, need not discharge any waste water, gas, solid the like waste, effectively controlled the pollution of heavy metal ion and high volence metal ion to receiving water body.
The process data of the utility model is following:
Wastewater treatment equipment designing treatment ability: 180m3/h; Full-automatic water purifier water loss is considered with 1%; Design water production rate: 178m3/h; The ultra-filtration equipment design recovery: 95%; Design water production rate: 169m3/h; The reverse osmosis unit design recovery: 75%; Design water production rate: 127m3/h; Total yield 71%; The medicament that the heavy metal wastewater thereby advanced treatment zero release recovery system of the utility model uses has coagulating agent (PAC), coagulant aids (PAM) preparation concentration 10%; Hydrochloric acid, sodium hydroxide, Youxiaolin, sodium sulfite anhy 96 etc., dosing and kind are confirmed according to production test and are adjusted accordingly.
The employed equipment of the utility model is following:
Sewage pump is used for the lifting of waste water in the equalizing tank, with WP and the flooding velocity that guarantees that full-automatic water purifier is required.
Because turbidity is unstable in the former water, and granule foreign does not meet the influent quality condition of reverse osmosis unit in the former water, at the prime preprocessing part integrated full-automatic water purifier is set, and is used for removing the suspended impurity of water, guarantees the normal operation of back level r-o-.Integrated full-automatic back washing water purifier is that a kind of novel gravity type boat davit is washed water purifier automatically, and this device is fit to influent turbidity≤3000mg/L, delivery turbidity≤3mg/l.
The more medium filter service pump is used for the lifting through water in the intermediate pool after the full-automatic water purifier purifying treatment, to guarantee the WP and the flooding velocity of more medium filter.
Because raw water turbidity is unstable; And granule foreign content does not meet the influent quality condition of RO device in the former water; At the prime preprocessing part more medium filter is set; Can effectively remove the mechanical impurity and the former water iron-holder of reduction that exist in the former water, the raw water turbidity that the burst accident of effectively resisting causes increases, and is up to standard to guarantee the feed water by reverse osmosis pollution index.Silica sand, the hard coal of filling different gradation can be held back the PM for particulate matter in the former water effectively in the strainer, thereby reduce raw water turbidity.
More medium filter backwash water pump is used for the lifting through water in the intermediate pool after the full-automatic water purifier purifying treatment, is used for the backwash of more medium filter.
The specification of self-cleaning filter is processing capacity Q=180m
3/ h, P=1.0Mpa.According to above-mentioned parameter, select for use my company to produce GXL800-10 type automatic backwashing filter 1 cover.
(Ultra-filtration UF) is a kind of can solution the purification and isolating membrane separation technique in ultrafiltration.Ultrafiltration membrane system is to be filtration medium with the ultra-filtration membrane, and the pressure difference of film both sides is the solution separating device of motivating force.Ultra-filtration membrane only allows solvent (like water molecules), inorganic salt and the small organic molecule in the solution to see through, and macromolecular substance such as the suspended substance in the solution, colloid, protein and mikrobe are held back, and purifies and isolating purpose thereby reach.
The hyperfiltration reverse-rinsing water pump is used for the lifting through ultrafiltration water pool inner water after the ultra-filtration equipment purifying treatment, is used for the backwash of ultra-filtration equipment.
The gac service pump is used for the lifting through ultrafiltration water pool inner water after the ultra-filtration equipment purifying treatment, to guarantee the WP and the flooding velocity of activated charcoal filter.
Activated charcoal filter is that the chlorine residue that can't remove during the absorption prime is filtered receives its oxidative degradation to prevent back level reverse osmosis membrane; Go back the pollution rerum natura materials such as small organic molecule that absorption is revealed in the past simultaneously, heavy metal ion, COD etc. in the water are had significantly absorption removal effect.Can further reduce the SDI value of RO water inlet again, guarantee SDI＜5, TOC＜2.0ppm.
Non-oxide sterilant is used for the feedwater virus killing sterilization of full-automatic cleaner.Be added in the line mixer on the cleaner suction culvert.Contact medium: 0.2%GT881 liquid.
Sterilant sterilization feeder apparatus is used for the disinfection of waste water.Though handle through prime, wherein contain bacterium, algae and mikrobe live body with and spore etc.Therefore, former water is carried out sterilization and disinfection handle,, shorten the cleaning interval of reverse osmosis system in order to avoid grow mikrobe in the follow-up reverse osmosis system fast.Add the line mixer import that a little is arranged on the water purifier import, utilize of the mixing of former water, guarantee that oxygenant and Yuan Shui have sufficient duration of contact, reach sterilization effects at line mixer.Oxygenant adopts industrial NaClO solution, or the solid chlorhexidine-containing disinfectant.Contact medium is a 10%NaClO liquid.
Flocculation agent PAC throwing device is used to add aluminium chlorohydroxide PAC liquid; Mix through line mixer,, make the short grained suspended substance cohesion in the former water with the suspended substance thorough mixing in the former water; Generate oarse-grained flock, hold back so that in more medium filter, filter.Contact medium is a 10%PAC liquid.
Be used for the sterilization of ultra-filtration equipment backwash.Oxygenant adopts industrial NaClO solution, or the solid chlorhexidine-containing disinfectant.Contact medium is a 10%NaClO liquid.
In the ultra-filtration equipment operational process, need disperse matting.The utility model is that ultra-filtration equipment provides a cover NaOH chemicals dosing plant.Contact medium is a 10%NaOH liquid.
In the ultra-filtration equipment operational process, need disperse matting.The utility model is that ultra-filtration equipment provides a cover HCl chemicals dosing plant.Contact medium is a 10%HCL liquid.
Reductive agent adds in the pipeline before the RO device, and contents of residual chlorine protection RO film is not influenced by chlorine residue in the water with removing.Dosage is generally 2-3PPM solution and adds meter.Contact medium is a 10%NaHSO3 liquid.
In reverse osmosis unit long-time running process, need carry out matting.The utility model is that reverse osmosis unit provides a cover HCl chemicals dosing plant.Contact medium is a 10%HCl liquid.
In order to guarantee membrane element surface non-scaling, guarantee the long-time running effect of film, prolong the work-ing life of film, this technology is provided with the Scale inhibitors chemicals dosing plant before reverse osmosis unit.Postpone sedimentary process through delaying the salt crystal growth, impel crystal can not form a certain size and settle down with enough concentration.Simultaneously Scale inhibitors has the dispersion agent effect, can make in the former water of r-o-difficulty soluble salt or be deposited on dirt on the film surface, and Sui Yuanshui is discharged to outside the reverse osmosis unit.The MDC220 Scale inhibitors that Scale inhibitors adopts AM General shellfish enlightening (GE-BETZ) company to produce, this medicament is in order to the control fouling and reduce particle contamination especially to the higher water quality of calcium ions and magnesium ions content in the former water.
Embodiment recited above describes the preferred implementation of the utility model; Be not that design and scope to the utility model limits; Do not breaking away under the utility model design concept prerequisite; Common engineering technical personnel make the technical scheme of the utility model in this area various modification and improvement all should fall into the protection domain of the utility model, and the technology contents that the utility model is asked for protection all is documented in claims.
Claims (7)
1. a heavy metal wastewater advanced treatment zero release recovery system; It is characterized in that comprising the pre-processing device that connects successively; First security personnel's strainer (5), ultrafiltration apparatus (6), ultrafiltration pond (7), activated charcoal filter (8), second security personnel strainer (9), reverse osmosis unit (10) and the reuse pool (11); Two back flushing water outlets in said ultrafiltration pond (7) are connected with the back flushing water-in of ultrafiltration apparatus (6) and the back flushing water-in of activated charcoal filter (8) respectively, and the back flushing water outlet of reuse pool (11) is connected with the back flushing water-in of reverse osmosis unit (10).
2. heavy metal wastewater thereby advanced treatment zero release recovery system according to claim 1; It is characterized in that said pre-processing device comprises the equalizing tank (1) that once connects, full-automatic water purifier (2), intermediate pool (3) and more medium filter (4), the back flushing water outlet of said intermediate pool (3) is connected with the top water-in of more medium filter (4).
3. heavy metal wastewater thereby advanced treatment zero release recovery system according to claim 2; The water port that it is characterized in that said full-automatic water purifier (2) connects thickner (13) through suction pit (12), and the mud discharging mouth of thickner (13) connects diaphragm filter press (14); The water port of thickner (13) and diaphragm filter press (14) is connected equalizing tank (1) respectively.
4. heavy metal wastewater thereby advanced treatment zero release recovery system according to claim 1; The rinse water water outlet that it is characterized in that said ultrafiltration apparatus (6) is connected with cleaning water tank (15); The water outlet that cleans water tank (15) connects the water-in of the 3rd security personnel's strainers (16), and the water outlet of the 3rd security personnel's strainers (16) connects the water-in of ultrafiltration apparatus (6) and reverse osmosis unit (10) respectively; The reuse water outlet of reverse osmosis unit (10) connects cleans water tank (15).
5. heavy metal wastewater thereby advanced treatment zero release recovery system according to claim 1 is characterized in that the dense water out of said reverse osmosis unit (10) connects dense pond (17).
6. heavy metal wastewater thereby advanced treatment zero release recovery system according to claim 2 is characterized in that said full-automatic water purifier (2) is connected with full-automatic water purifier chemicals dosing plant, and more medium filter (4) is connected with the more medium filter chemicals dosing plant.
7. heavy metal wastewater thereby advanced treatment zero release recovery system according to claim 1; It is characterized in that said ultrafiltration apparatus (6) all is connected the ultrafiltration chemicals dosing plant with ultrafiltration pond (7), said reverse osmosis unit (10) is connected with the reverse osmosis unit chemicals dosing plant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203947202U CN202265468U (en) | 2011-10-18 | 2011-10-18 | Equipment for deeply treating and recovering heavy metal waste water with zero discharge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203947202U CN202265468U (en) | 2011-10-18 | 2011-10-18 | Equipment for deeply treating and recovering heavy metal waste water with zero discharge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202265468U true CN202265468U (en) | 2012-06-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203947202U Expired - Fee Related CN202265468U (en) | 2011-10-18 | 2011-10-18 | Equipment for deeply treating and recovering heavy metal waste water with zero discharge |
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| Country | Link |
|---|---|
| CN (1) | CN202265468U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102417253A (en) * | 2011-10-18 | 2012-04-18 | 江苏海洲水务工程有限公司 | In-depth treatment zero-discharge recovery equipment for heavy metal waste water |
| CN103274560A (en) * | 2013-06-04 | 2013-09-04 | 苏州南风优联环保工程有限公司 | Zero discharging process of heavy metal wastewater |
| CN104496071A (en) * | 2014-11-19 | 2015-04-08 | 重庆中科过滤设备制造有限公司 | Boiler water primary treatment system |
| CN110040904A (en) * | 2019-03-14 | 2019-07-23 | 清远市中宇环保实业股份有限公司 | A kind of heavy metal waste water treatment system and method |
-
2011
- 2011-10-18 CN CN2011203947202U patent/CN202265468U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102417253A (en) * | 2011-10-18 | 2012-04-18 | 江苏海洲水务工程有限公司 | In-depth treatment zero-discharge recovery equipment for heavy metal waste water |
| CN102417253B (en) * | 2011-10-18 | 2014-01-15 | 江苏海洲水务工程有限公司 | In-depth treatment zero-discharge recovery equipment for heavy metal waste water |
| CN103274560A (en) * | 2013-06-04 | 2013-09-04 | 苏州南风优联环保工程有限公司 | Zero discharging process of heavy metal wastewater |
| CN103274560B (en) * | 2013-06-04 | 2016-03-23 | 苏州南风优联环保工程有限公司 | Heavy metal wastewater thereby technique of zero discharge |
| CN104496071A (en) * | 2014-11-19 | 2015-04-08 | 重庆中科过滤设备制造有限公司 | Boiler water primary treatment system |
| CN110040904A (en) * | 2019-03-14 | 2019-07-23 | 清远市中宇环保实业股份有限公司 | A kind of heavy metal waste water treatment system and method |
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Owner name: HAIZHOU ENVIRONMENTAL PROTECTION GROUP CO., LTD. Free format text: FORMER NAME: JIANGSU HAIZHOU WATER SERVICE PROJECT CO., LTD. |
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Address after: 214211 concentrated industrial zone of Yixing town and Wuxi City, Jiangsu Patentee after: HAIZHOU E.P. GROUP CO., LTD. Address before: 214211 concentrated industrial zone of Yixing town and Wuxi City, Jiangsu Patentee before: Jiangsu Haizhou Water Service Project Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20120606 Termination date: 20161018 |