CN205328766U - Processing system of clean recovery of heavy metal and mud minimizing among electroplating effluent - Google Patents
Processing system of clean recovery of heavy metal and mud minimizing among electroplating effluent Download PDFInfo
- Publication number
- CN205328766U CN205328766U CN201620112936.8U CN201620112936U CN205328766U CN 205328766 U CN205328766 U CN 205328766U CN 201620112936 U CN201620112936 U CN 201620112936U CN 205328766 U CN205328766 U CN 205328766U
- Authority
- CN
- China
- Prior art keywords
- heavy metal
- water pump
- sludge
- film group
- mcr
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a processing system of clean recovery of heavy metal and mud minimizing among electroplating effluent, including former pond, promotion water pump, line mixer, reaction tank, MCR membrane group, sludge thickening groove and the sludge dewatering unit that connects gradually, be equipped with the filtrating back flow between sludge dewatering unit and the former pond, the last charge device that is connected with of line mixer, the inside of MCR membrane group is equipped with interior reinforcing hollow fiber curtain -type membrane silk, and outside still end -to -end connection has the suction filtration water pump, produces water tank and backwashing water pump. This processing system's advantage lies in that the rate of recovery of heavy metal is high, reaches more than 95%, the heavy metallic compound that the recovery obtained, purity is high, reaches more than 99%, product water is as clear as crystal, and the turbidity approaches zero, and wherein heavy metal ion's the concentration of remaining is counted according to the solubility product, can reach the requirement of " electroplating standard for discharge of pollutants " (GB21900 -2008) under best pH value.
Description
Technical field
This utility model relates to the process system of a kind of electroplating wastewater, and particularly heavy metal out of electroplating wastewater cleaning reclaims the process system with sludge reduction。
Background technology
Electroplating industry is highly versatile, uses important processing industry wide, inter-trade, interdepartmental and manufacturability production technology industry。In recent years due to the development of advanced manufacturing industry, electroplating industry is also into good developing period。Through transformation for many years and reformation, electroplating industry has had bigger lifting in technical equipment, management level, and distribution form is also developed into the centralized production pattern with overall planning gradually by original small-scale distributing。
Electroplating industry belongs to heavily contaminated industrial trade; it it is the object of each department environmental conservation authorities emphasis supervision; in the improvement and application technology as the second resource of waste water, mud and heavy metal, each enviromental protection enterprise and R&D institution, also it is as technological core and wipes a difficult problem to be captured。The feature of electroplating industry environmental pollution has: (1) is various in style owing to electroplating, and waste component is different because processing technique, except hardly degraded organic substance pollutes, also has poisonous and hazardous heavy metal substance, such as cadmium, chromium, lead, nickel, copper, zinc；(2) waste water, mud are severe corrosive and strong toxicity, process or mishandling very easily produce secondary pollution；(3) the mineral petroleum-type in waste water and surface-active contents are higher；(4) owing to waste water, mud containing the undecomposable and cumulative bad of organic refractory organics, heavy metal, the impact of environment will be persistence and permanent by itself or secondary pollution, and ecological environment and health to whole region will produce directly harm。
Currently for the recycling of heavy metal out of electroplating wastewater, mainly there are electrolysis, ion exchange and membrane separation process。
Electrolysis polar plate loss is big, power consumption big, pH controls can not cause at that time the re-dissolved of precipitation, is relatively suitable for the improvement of the higher waste water of concentration。Heavy metal purity and the cleanliness factor of water that ion exchange reclaims are all higher, but it is very strict to the requirement of Wastewater Pretreatment。Its salinity processing object is generally 100-300mg/L, and when more than 500mg/L, it is necessary to regenerate frequently, operating cost is higher。Simultaneously in order to prevent ion exchange resin by blocking pollutions such as the mechanical admixture in waste water, float, oil preparationes, waste water need to be carried out pretreatment, SS is reduced to below 5-10mg/L。And the regenerated liquid of resin is also required to process further and qualified discharge, waste resin can cause secondary pollution。The product water of reverse osmosis membrane separation method is better, but the degree of heavy metal ion concentration is restricted, and need to process further and could reclaim heavy metal, this method it is important that product Water circulation。
Due to the series of problems in heavy metal recovery process, cost recovery is higher, and it reclaims to cause electroplating enterprise general tree, and is directly discharged into waste water station and does qualified discharge。Current waste water station is generally adopted the traditional chemical sedimentation method, has that chemical chemical feeding quantity is big, sludge yield big, specific resistance to filtration cost is high, overall operation cost is high, and draining salinity is high, and environment exists the problems such as potential pollution。
Utility model content
The purpose of this utility model is to provide one to have heavy metal recovery rate height to solve above-mentioned the deficiencies in the prior art, purity is high, less developer, sludge yield is few, product water is as clear as crystal, and turbidity is close to zero, and the heavy metal out of electroplating wastewater cleaning that operating cost is low reclaims the process system with sludge reduction, its dehydrated sludge cake resourcebility utilizes simultaneously, produces water and can be back to workshop。
To achieve these goals, heavy metal out of electroplating wastewater cleaning designed by this utility model reclaims the process system with sludge reduction, including the former pond being sequentially connected with, promote water pump, pipe-line mixer, reaction tank, MCR film group, sludge concentration tank and sludge dewatering unit, filtrate return duct it is provided with between described sludge dewatering unit and former pond, described pipe-line mixer is connected to chemicals dosing plant, the inside of described MCR film group is provided with interior enhancing doughnut curtain type membrane silk, and outside also head and the tail are connected to sucking filtration water pump, produce water tank and backwash water pump。
The average pore size of the interior enhancing doughnut curtain type membrane silk in described MCR film group is 0.05 μm ~ 0.1 μm。Described interior enhancing doughnut curtain type membrane silk intensity is high, not fracture of wire, to the rejection of the heavy metal precipitation particulate matter in water more than 99.5%, produces water turbidity≤0.1NTU。Operating pressure-the 0.02MPa of film silk arrives-0.05MPa, filters power and comes from MCR film group and produce the suction of the liquid level difference of water tank, sucking filtration water pump。
Described pipe-line mixer adopts big resistance mode, is added medicament by chemicals dosing plant improving mix and blend intensity in pipe-line mixer, is provided hybrid power by promoting water pump, and material adopts resistant material, with the corrosion of acid and alkali-resistance。The water outlet of pipe-line mixer enters reaction tank, and in order to ensure that heavy metal ion and medicament fully react generation metallic compound, the time of staying of reaction tank is located at 15-30min。
The addition kind of present treatment system Chinese medicine is determined according to classification and the chemical reaction of heavy metal ion, and addition depends on the requirement of concentration of heavy metal ion, original ph, optimal pH, substantially by 1-1.05 times of chemical reaction equivalent。For Ni2+、Zn2+、Cu2+Deng, it is only necessary to adding NaOH adjusts pH value to > 9.5,9-10, > 8 respectively, for Cr6+, then need to be initially charged reducing agent such as ferrous iron, sodium sulfite etc., add NaOH and adjust pH to 8-9。
In concrete processing procedure, electroplating wastewater is introduced into former pond, pipe-line mixer is entered by after promoting water pump lifting, being added entrance reaction tank after medicament is sufficiently mixed with waste water by chemicals dosing plant in pipe-line mixer, heavy metal ion and medicament fully react in reaction tank and generate precipitable particle shape heavy metal compound。The water outlet of reaction tank is from flowing into MCR film group, wherein particle shape heavy metal compound is retained separation by MCR film group, stop with suspended sludge shape, regularly drain into sludge concentration tank, eventually passing mud after sludge dewatering unit dehydration, moisture content is down to less than 50%, reclaims heavy metal as high-purity and carries out recycling, filtrate in sludge dewatering unit is by filtrate return line flow to former pond simultaneously, and filtrate processes again；The product water of another side MCR film group enters product water tank after sucking filtration water pump, can reuse continue with, and simultaneously in order to maintain membrane flux, MCR film group is carried out interval backflushing and washes by described backwash water pump。
The bottom of described MCR film group is provided with gas dispersion apparatus, and this gas dispersion apparatus is connected to the aerator being positioned at outside MCR film group, washes away thus the interior enhancing doughnut curtain type membrane silk in MCR film group is carried out face, it is prevented that and lessening membrane fouling。
The heavy metal out of electroplating wastewater cleaning that this utility model obtains reclaims the process system with sludge reduction, PAC and PAM need not be added in processing procedure, need not need to improve particle diameter and the settling velocity of compound particle by flocculating as sedimentation tank, heavy metal compound retain the mechanical grading effect fully relying on MCR film group。Make processing procedure added amount of chemical few, sludge yield is few, wastewater treatment and Treatment of Sludge, disposes relatively traditional handicraft much lower, and mud generation amount is about the 5%-10% of traditional chemical depositing technology, and mud cake is reclaim the high-purity heavy metal compound obtained, resourcebility utilizes。
The advantage of this process system is in that the response rate of heavy metal is high, reaches more than 95%；Reclaiming the heavy metal compound obtained, purity is high, reaches more than 99%；Product water is as clear as crystal, and turbidity is close to zero, and wherein the residual concentration of heavy metal ion is by solubility product, can reach the requirement of " plating pollutant emission standard " (GB21900-2008) under optimal pH。
Accompanying drawing explanation
Fig. 1 is the heavy metal out of electroplating wastewater cleaning recovery flow chart with the process system of sludge reduction of embodiment 1；
Fig. 2 is the heavy metal out of electroplating wastewater cleaning recovery flow chart with the process system of sludge reduction of embodiment 2。
In figure: former pond 1, lifting water pump 2, pipe-line mixer 3, reaction tank 4, MCR film group 5, sludge concentration tank 6, sludge dewatering unit 7, sucking filtration water pump 8, product water tank 9, backwash water pump 10, chemicals dosing plant 11, filtrate return duct 12, gas dispersion apparatus 13, aerator 14。
Detailed description of the invention
Below in conjunction with drawings and Examples, this utility model is further illustrated。
Embodiment 1:
As shown in Figure 1, the heavy metal out of electroplating wastewater cleaning that the present embodiment provides reclaims the process system with sludge reduction, including the former pond 1 being sequentially connected with, promote water pump 2, pipe-line mixer 3, reaction tank 4, MCR film group 5, sludge concentration tank 6 and sludge dewatering unit 7, it is provided with filtrate return duct 12 between described sludge dewatering unit 7 and former pond 1, described pipe-line mixer 3 is connected to chemicals dosing plant 11, the inside of described MCR film group 5 is provided with interior enhancing doughnut curtain type membrane silk, and outside also head and the tail are connected to sucking filtration water pump 8, produce water tank 9 and backwash water pump 10。The average pore size of the interior enhancing doughnut curtain type membrane silk in wherein said MCR film group 5 is 0.05 μm ~ 0.1 μm。
In concrete processing procedure, electroplating wastewater is introduced into former pond 1, pipe-line mixer 3 is entered by promoting after water pump 2 promotes, being added entrance reaction tank 4 after medicament is sufficiently mixed with waste water by chemicals dosing plant 11 in pipe-line mixer 3, heavy metal ion and medicament fully react in reaction tank 4 and generate precipitable particle shape heavy metal compound。The water outlet of reaction tank 4 is from flowing into MCR film group 5, wherein particle shape heavy metal compound is retained separation by MCR film group 5, stop with suspended sludge shape, regularly drain into sludge concentration tank 6, eventually pass mud after sludge dewatering unit 7 dehydration, moisture content is down to less than 50%, reclaims heavy metal as high-purity and carries out recycling, and the filtrate in sludge dewatering unit 7 flow to former pond by filtrate return duct 12 and again processes simultaneously；The product water of another side MCR film group 5 enters product water tank 9 after sucking filtration water pump 8, can reuse continue with, and simultaneously in order to maintain membrane flux, MCR film group 5 is carried out interval backflushing and washes by described backwash water pump 10。
Embodiment 2:
As shown in Figure 2, the heavy metal out of electroplating wastewater cleaning that the present embodiment provides reclaims the process system with sludge reduction, its general structure is identical with embodiment 1, but in specifically used process, wash away in order to the interior enhancing doughnut curtain type membrane silk in MCR film group 5 is carried out face, preventing and lessening membrane fouling, the bottom of described MCR film group 5 is provided with gas dispersion apparatus 13, and this gas dispersion apparatus 13 is connected to the aerator 14 being positioned at outside MCR film group 5。
Claims (3)
1. a heavy metal out of electroplating wastewater cleaning reclaims the process system with sludge reduction, it is characterized in that: include the former pond (1) being sequentially connected with, promote water pump (2), pipe-line mixer (3), reaction tank (4), MCR film group (5), sludge concentration tank (6) and sludge dewatering unit (7), filtrate return duct (12) it is provided with between described sludge dewatering unit (7) and former pond (1), described pipe-line mixer (3) is connected to chemicals dosing plant (11), the inside of described MCR film group (5) is provided with interior enhancing doughnut curtain type membrane silk, outside also head and the tail are connected to sucking filtration water pump (8), produce water tank (9) and backwash water pump (10)。
2. heavy metal out of electroplating wastewater according to claim 1 cleaning reclaims the process system with sludge reduction, it is characterised in that: the average pore size of the interior enhancing doughnut curtain type membrane silk in described MCR film group (5) is 0.05 μm ~ 0.1 μm。
3. heavy metal out of electroplating wastewater according to claim 1 and 2 cleaning reclaims the process system with sludge reduction, it is characterized in that: the bottom of described MCR film group (5) is provided with gas dispersion apparatus (13), this gas dispersion apparatus (13) is connected to and is positioned at the outside aerator (14) of MCR film group (5)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620112936.8U CN205328766U (en) | 2016-02-04 | 2016-02-04 | Processing system of clean recovery of heavy metal and mud minimizing among electroplating effluent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620112936.8U CN205328766U (en) | 2016-02-04 | 2016-02-04 | Processing system of clean recovery of heavy metal and mud minimizing among electroplating effluent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205328766U true CN205328766U (en) | 2016-06-22 |
Family
ID=56317108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620112936.8U Expired - Fee Related CN205328766U (en) | 2016-02-04 | 2016-02-04 | Processing system of clean recovery of heavy metal and mud minimizing among electroplating effluent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205328766U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106116060A (en) * | 2016-08-26 | 2016-11-16 | 广东水清环保科技有限公司 | A kind of electro-coppering zinc-nickel cleans the processing means of waste water |
-
2016
- 2016-02-04 CN CN201620112936.8U patent/CN205328766U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106116060A (en) * | 2016-08-26 | 2016-11-16 | 广东水清环保科技有限公司 | A kind of electro-coppering zinc-nickel cleans the processing means of waste water |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102603097A (en) | Advanced treatment and recycling process for wastewater containing heavy metal ions | |
| CN105439326A (en) | Treatment method of chemical nickel-plating wastewater | |
| CN102153217B (en) | Electroplating integrated wastewater treatment method | |
| CN101734815A (en) | Electronic electroplating wastewater recycling advanced treatment technology | |
| CN201686593U (en) | Acid and alkaline wastewater cycle disposal system | |
| CN202558715U (en) | Treatment and reuse device for electrolytic manganese industrial wastewater | |
| CN107265696A (en) | A kind of desulfurization wastewater sofening treatment device and method | |
| CN204224358U (en) | Stainless-steel cold-rolling acid waste water treatment unit | |
| CN102167436B (en) | Electroplating wastewater treating agent | |
| CN109704516A (en) | A kind of processing system and processing method of amino benzene analog waste water | |
| CN103145267A (en) | Method for recovering copper sulfide and ferric hydroxide in auricupride acid wastewater through sulfidization method | |
| CN205328766U (en) | Processing system of clean recovery of heavy metal and mud minimizing among electroplating effluent | |
| CN208869412U (en) | The processing system of chromate waste water | |
| CN207468386U (en) | A kind of zero-discharge treatment system of mixed electroplating wastewater | |
| CN104692563A (en) | Electroplating effluent recycling device and processing method thereof | |
| CN108423885A (en) | A kind of electroplating waste processing process | |
| CN215886591U (en) | Electroplating effluent discharge to reach standard processing system | |
| CN201634532U (en) | Reclaimed water RO concentrated water standard discharge system | |
| CN201793444U (en) | Comprehensive wastewater treatment system | |
| CN204550278U (en) | A kind of electroplating waste-water reutilizing equipment | |
| CN104609589A (en) | Solid-liquid separation method of electroplating wastewater | |
| CN209010277U (en) | A kind of nickel-containing waste water advanced treatment apparatus | |
| CN107253775A (en) | A kind of electroplating wastewater mud decrement device | |
| CN208776462U (en) | A kind of processing of leather industry chromate waste water, chromium mud are reduced complete set of equipments | |
| CN209721861U (en) | A kind of processing system of amino benzene analog waste water |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160622 Termination date: 20190204 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |