CN202072589U - Electroplating wastewater on-line reuse device based on membrane biological reactor-reverse osmosis (MBR-RO) technology - Google Patents
Electroplating wastewater on-line reuse device based on membrane biological reactor-reverse osmosis (MBR-RO) technology Download PDFInfo
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- CN202072589U CN202072589U CN2011201670159U CN201120167015U CN202072589U CN 202072589 U CN202072589 U CN 202072589U CN 2011201670159 U CN2011201670159 U CN 2011201670159U CN 201120167015 U CN201120167015 U CN 201120167015U CN 202072589 U CN202072589 U CN 202072589U
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Abstract
The utility model discloses an electroplating wastewater on-line reuse device based on a membrane biological reactor-reverse osmosis (MBR-RO) technology, which comprises a water inlet valve, an MBR pre-treatment system, an RO system, a wastewater recovering groove, an electroplating groove and a rinsing groove, wherein the water inlet valve, the MBR pre-treatment system, the RO system, the wastewater recovering groove and the electroplating groove are sequentially connected, the rinsing groove is connected with the RO system, the MBR pre-treatment system comprises an electroplating wastewater inlet, a membrane biological reactor casing, a submerged membrane module and a pollution discharge opening, and the submerged membrane module is arranged in the membrane biological reactor casing. Dialysis water generated by each stage of the reverse osmosis membrane is sampled in a segmented way and flows back into the rinsing groove to be used as rinsing liquid of plated parts, and finally, concentrated liquid is conveyed into the recovering groove to be reused. The electroplating wastewater on-line reuse device has the advantages that the energy consumption is low, the efficiency is high, the occupied area is little, the automatic control is easy to realize, and in addition, the operation and the maintenance are simple and convenient.
Description
Technical field
The utility model relates to a kind of online reclamation set of electroplating wastewater, relates to the online reclamation set of a kind of electroplating wastewater based on the MBR-RO technology specifically, belongs to field of environment protection.
Background technology
Plating is one of the current whole world three big contaminated industries.According to incompletely statistics, national electroplating industry nearly 20000 tame enterprises, the electroplating wastewater of annual discharging has 40 billion cubic meters approximately, is equivalent to the tap water supply amount of several big and medium-sized cities, and the water resources of China has been caused serious pollution.
The various poaching wastewaters that produce in the electroplating process are chief components of electroplating wastewater, account for more than 80% of electroplating wastewater total emission volumn.Because plating commonly used comprises nickel plating, copper facing, chromium plating, zinc-plated etc. in the electroplating industry, so the principal pollutant of electroplating wastewater are heavy metal ion and prussiate and COD etc. such as nickel, copper, chromium, zinc.These pollutent toxicity are bigger, in addition also can be carcinogenic, teratogenesis, cause transgenation etc., to human very big with environmental hazard, strict improvement in addition.
At present electroplating wastewater improvement technology is mainly contained chemical precipitation method, biological process, electrolytic process, ion exchange method, evaporation concentration method, membrane separation technique etc.Though these treatment technologies have been obtained certain effect, still there are many deficiencies in recycling and closed cycle technical elements.Bigger as the occupation of land of methods such as chemistry, biology, need to add a large amount of chemical agents, to the reuse DeGrain of metals such as nickel, copper, resource fails to be fully used, and the waste water that this method is handled needs further the processing.Ion exchange method need consume a large amount of acid, bases chemical raw material when handling the regeneration of intermediate ion exchange resin, the processing cost height, the processing requirement complexity, resin is in use easily broken, thereby its application is under some influence, and see through the additive of not removing the brightening agent in the former plating bath composition in the liquid and containing monovalent ion, and do the rinse water reuse, can disadvantageous effect be arranged to the quality of plating piece.Present embrane method is handled electroplating wastewater technology, generally only selects reverse osmosis, ultrafiltration and technology that the two combines for use, but this technology overall energy consumption height, and online zero release complete set equipment that is that all right is ripe.
Summary of the invention
The purpose of this utility model is the deficiency that overcomes existing technology, provides a kind of electroplating wastewater based on the MBR-RO technology online reclamation set, improves the processing efficiency of electroplating wastewater, cuts down the consumption of energy, and realizes control and online little discharging automatically.
The purpose of this utility model is achieved by the following technical programs: the online reclamation set of a kind of electroplating wastewater based on the MBR-RO technology, comprise water intaking valve, membrane bioreactor pretreatment system (MBR pretreatment system), reverse osmosis membrane coupled system (RO system), waste water reclamation groove, plating tank, rinse tank
Described water intaking valve, MBR pretreatment system, RO system, waste water reclamation groove, plating tank connect successively, and rinse tank is connected with the RO system,
Described MBR pretreatment system comprises electroplating wastewater water-in, membrane bioreactor housing, submerged membrane module, sewage draining exit, and the submerged membrane module is installed in the membrane bioreactor housing.
In order better to realize the utility model:
Be connected with circulation bucket, water pump, header tank, high-pressure pump between described MBR pretreatment system and the RO system in turn.High-pressure pump is used to provide the essential reverse osmotic pressure of reverse osmosis membrane ingress.
Security personnel's strainer is installed between described water pump and the header tank.Purpose is to remove pre-treatment to produce the fine particle that may exist in the water, protection RO system.
Described RO system is multistage reverse osmosis system series connection.
Described submerged membrane module is open to be installed in the membrane bioreactor housing.This mounting means has the waste water treatment efficiency height, energy consumption is low and wash advantage easily.
Described submerged membrane module material is a kind of in stainless steel sintered membrane, ceramic membrane, cellulose acetate film and the polyvinylidene fluoride film.
Described submerged membrane module material pore diameter range is 0.001～0.02 μ m.
During this wastewater treatment equipment operation, at first open water intaking valve, in the MBR pretreatment system, pump into electroplating wastewater, make waste water pass through the submerged membrane module, suspended substance in the waste water, colloid thing and some heavy metal ion throw outs etc. are trapped within the below of submerged membrane module, have finished high-precision preprocessing process.Pre-treatment is produced water and is sent into the storage of circulation bucket.After the wastewater flow rate in the circulation bucket reaches set(ting)value, start water pump, waste water is sent in security personnel's strainer further filtered, so that carry out next step reverse osmosis concentration, security personnel's strainer produces water and is collected in the header tank.
In preprocessing process, can adopt atmospheric operation, and throw outs such as the particulate in the waste water, suspended substance, colloid thing mainly accumulate in the below of membrane module, so this handle process energy consumption low, clean convenient.After 3～6 months, only need to carry out cleaning maintenance in this MBR system operation 1 time.Each cleaning maintenance produces 1 ton of waste water approximately, can be discharged by the sewage draining exit below the MBR device.With respect to the wastewater flow rate (1000～2000 tons) that the total system run duration is handled, this quantity discharged is slight, has realized online little discharging of electroplating wastewater.After the MBR system handles, pre-treatment is produced hydromining with an end output, rate of recovery height.In addition, this MBR system takes up an area of few, and is easy and simple to handle, is easy to realize automatic control.
Pre-treatment is produced water after security personnel's strainer further filters, and will ensure public security by high-pressure pump and filter product water pump into the RO system in header tank.In this RO system, adopt multistage reverse osmosis system series connection, and determine the reverse osmosis membrane quantity of use according to actual waste water concentration.Waste water concentrates in reverse osmosis membrane, and concentrated solution is sent in the waste water reclamation groove, waits until to be back to plating tank.The dialysis moisture section extraction that each grade reverse osmosis membrane produces by reducing reverse osmotic pressure, has significantly reduced the energy consumption of reverse osmosis process.Through after the multistage reverse osmosis, under uniform pressure, equivalent membrane area, the electroplating wastewater cycles of concentration can reach 60～80 times, and the chromium ion rejection can reach more than 99%.The dialysis water conductivity scope of reverse osmosis system extraction at different levels is 50～250 μ s/cm, is better than tap water, is back in the rinse tank, and the rinsing liquid as plating piece recycles, thereby has realized the online reuse of waste water.
Compared with prior art, the utlity model has following advantage:
(1) adopt membrane bioreactor that electroplating wastewater is carried out pre-treatment, replaced pretreatment technology such as traditional sand filtration, gac filter, micro-filtration, atmospheric operation has that efficient height, energy consumption are low, waste water reclamation rate height, advantage such as takes up an area of less.
(2) the reverse osmosis coupled system adopts many reverse osmosis membrane series connection, determines the reverse osmosis membrane quantity of actual motion according to actual waste water concentration.Each props up the technology of the dialysis hydromining of reverse osmosis membrane generation with the segmentation extraction, has significantly reduced the energy consumption of reverse osmosis process.And through after the multistage reverse osmosis, concentrated solution and dialyzate have all been realized online reuse, and Operation and Maintenance is simple and convenient.
Description of drawings
Fig. 1 is the online reclamation set structure flow chart of a kind of electroplating wastewater based on the MBR-RO technology; 1 water intaking valve; The 2MBR pretreatment system; 2-1 electroplating wastewater water-in; 2-2 stainless steel membrane bio-reactor housing; 2-3 submerged membrane module; The 2-4 sewage draining exit; 3 circulation buckets; 4 water pumps; 5 security personnel's strainers; 6 header tanks; 7 high-pressure pump; 8 first-stage reverse osmosis systems, 9 two-pass reverse osmosis systems, 10N level reverse osmosis system; 11 waste water reclamation grooves; 12 plating tanks; 13 rinse tanks;
Fig. 2 is a MBR pretreatment system techniqueflow chart;
Fig. 3 is a RO systems technology schema.
Embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is described in further detail, but embodiment of the present utility model is not limited thereto.
Embodiment 1
As shown in Figure 1, the online reclamation set of a kind of electroplating wastewater based on the MBR-RO technology comprises water intaking valve 1, MBR pretreatment system 2, circulation bucket 3, water pump 4, security personnel's strainer 5, header tank 6, high-pressure pump 7 and RO system, waste water reclamation groove 11, plating tank 12, rinse tank 13; MBR pretreatment system 2 comprises electroplating wastewater water-in 2-1, stainless steel membrane bio-reactor housing 2-2, submerged membrane module 2-3, sewage draining exit 2-4, submerged membrane module 2-3 selects a kind of as the membrane module material in stainless steel sintered membrane, ceramic membrane, cellulose acetate film and the polyvinylidene fluoride film, pore diameter range is 0.001～0.02 μ m, and submerged membrane module 2-3 is open to be installed among the stainless steel membrane bio-reactor housing 2-2.Be used for the accurate pre-treatment of electroplating wastewater, to remove colloidal solid and the organism in the waste water.MBR pretreatment system 2 backs are connected with circulation bucket 3 by stainless steel pipes; water is produced in the collection pre-treatment, is connected with water pump 4, security personnel's strainer 5 behind the circulation bucket 3 successively, after pre-treatment product water is sent into security personnel's strainer 5 by water pump 4; remove the fine particle that wherein may exist, protection RO system.After pre-treatment product water passes through security personnel's strainer 5, be collected in the header tank 6.Be connected with high-pressure pump 7 and RO system behind the header tank 6 successively.The RO system is in series by first-stage reverse osmosis system 8, two-pass reverse osmosis system 9, N level reverse osmosis system 10, and determines the reverse osmosis membrane quantity of use according to actual waste water concentration.Waste water forms one-level dialysis water, secondary dialysis water and N level dialysis water by first-stage reverse osmosis system 8, two-pass reverse osmosis system 9, N level reverse osmosis system 10 backs, and dialysis water at different levels are sent into rinse tank 13, as the rinsing liquid of plating piece.Waste water produces the one-level concentrated solution by first-stage reverse osmosis system 8 and enters two-pass reverse osmosis system 9 generation secondary concentrated solutions, finally enters N level reverse osmosis system 10 generation N level concentrated solutions, sends into then in the waste water reclamation groove 11, waits until being back to plating tank 12.
Application Example 1 described device is handled waste water from plating plant, and table 1 is used the situation of this online reuse method and device waste water recycling for Dongguan City Electroplate Factory.
10 tons of/day electroplating wastewater Treatment for Reuse of table 1 situation
The described device of Application Example 1 is handled waste water from plating plant, and table 2 is used the situation of waste water recycling behind this online reuse technology for Guangzhou Electroplate Factory.
20 tons of/day nickel-plating waste water Treatment for Reuse of table 2 situation
The foregoing description is the utility model preferred implementation; but embodiment of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under spirit of the present utility model and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within the protection domain of the present utility model.
Claims (7)
1. online reclamation set of the electroplating wastewater based on the MBR-RO technology, it is characterized in that: described device comprises water intaking valve, MBR pretreatment system, RO system, waste water reclamation groove, plating tank, rinse tank,
Described water intaking valve, MBR pretreatment system, RO system, waste water reclamation groove, plating tank connect successively, and rinse tank is connected with the RO system,
Described MBR pretreatment system comprises electroplating wastewater water-in, membrane bioreactor housing, submerged membrane module, sewage draining exit, and the submerged membrane module is installed in the membrane bioreactor housing.
2. the online reclamation set of a kind of electroplating wastewater based on the MBR-RO technology according to claim 1 is characterized in that: be connected with circulation bucket, water pump, header tank, high-pressure pump between described MBR pretreatment system and the RO system in turn.
3. the online reclamation set of a kind of electroplating wastewater based on the MBR-RO technology according to claim 2 is characterized in that: security personnel's strainer is installed between described water pump and the header tank.
4. the online reclamation set of a kind of electroplating wastewater based on the MBR-RO technology according to claim 1 is characterized in that: described RO system is multistage reverse osmosis system series connection.
5. the online reclamation set of a kind of electroplating wastewater based on the MBR-RO technology according to claim 1 is characterized in that: described submerged membrane module is open to be installed in the membrane bioreactor housing.
6. the online reclamation set of a kind of electroplating wastewater based on the MBR-RO technology according to claim 1 is characterized in that: described submerged membrane module material is a kind of in stainless steel sintered membrane, ceramic membrane, cellulose acetate film and the polyvinylidene fluoride film.
7. the online reclamation set of a kind of electroplating wastewater based on the MBR-RO technology according to claim 1 is characterized in that: described submerged membrane module material pore diameter range is 0.001～0.02 μ m.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201670159U CN202072589U (en) | 2011-05-24 | 2011-05-24 | Electroplating wastewater on-line reuse device based on membrane biological reactor-reverse osmosis (MBR-RO) technology |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011201670159U CN202072589U (en) | 2011-05-24 | 2011-05-24 | Electroplating wastewater on-line reuse device based on membrane biological reactor-reverse osmosis (MBR-RO) technology |
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| CN202072589U true CN202072589U (en) | 2011-12-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102219341A (en) * | 2011-05-24 | 2011-10-19 | 广东新利环保科技投资有限公司 | MBR (Meane Biological Reactor)-RO (Reverse Osmosis) technology-based method and device for on-line recycling electroplating wastewater |
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2011
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102219341A (en) * | 2011-05-24 | 2011-10-19 | 广东新利环保科技投资有限公司 | MBR (Meane Biological Reactor)-RO (Reverse Osmosis) technology-based method and device for on-line recycling electroplating wastewater |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111214 Termination date: 20190524 |