CN106007056A - Device and method for simultaneous removal of trace heavy metals in electroplating wastewater - Google Patents

Device and method for simultaneous removal of trace heavy metals in electroplating wastewater Download PDF

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Publication number
CN106007056A
CN106007056A CN201610384706.1A CN201610384706A CN106007056A CN 106007056 A CN106007056 A CN 106007056A CN 201610384706 A CN201610384706 A CN 201610384706A CN 106007056 A CN106007056 A CN 106007056A
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reaction zone
district
mixing
electroplating wastewater
water
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CN106007056B (en
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王广智
王卓然
刘星
韩利明
耿钰萱
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Harbin Institute of Technology
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Harbin Institute of Technology
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/286—Treatment of water, waste water, or sewage by sorption using natural organic sorbents or derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/20—Heavy metals or heavy metal compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Water Treatment By Sorption (AREA)

Abstract

The invention discloses a device and a method for simultaneous removal of trace heavy metals in electroplating wastewater. The device comprises a reaction zone A, a reaction zone B, a reaction zone C and a reaction zone D. The reaction zone A is provided with a dosing port and a stirring device, and a drain port is connected to a water inlet of the reaction zone B; the bottom of the reaction zone B is filled with a supporting layer, and a nano iron activated carbon adsorption filter layer is arranged above; the reaction zone C is provided with a dosing port and a stirring device, a water inlet is communicated with a water drainage port of the reaction zone B, and a water drainage port is communicated with a water inlet in the reaction zone D; the bottom of the reaction zone D is filled with a supporting layer, a TiO2 supported chitosan adsorption filter layer is arranged above, and a water outlet of the reaction zone D is communicated with the reaction zone A. The invention combines addition of composite chemicals and a filtering processing technology to economically and efficiently remove trace heavy metal ions of chromium, copper, nickel and zinc in electroplating wastewater, so that the effluent can reach the standard of recycling resources, and the wastewater resource is realized.

Description

A kind of synchronize to remove the device and method of micro heavy in electroplating wastewater
Technical field
The present invention relates to a kind of integrated apparatus processing electroplating wastewater micro heavy and method.
Background technology
Electroplating wastewater is as one of the whole world three big contaminated industries, and its water-quality constituents is complicated and wayward.Along with new " plating Pollutant emission standard " promulgation of (GB21900-2008), electroplating industry waste water process require more and more stricter.Waste water contains The poisonous and hazardous heavy metals such as chromium, copper, nickel, zinc, according to incompletely statistics, the plating in the whole nation produces 400,000,000 tons of heavy metals of annual discharge Waste water.Heavy metal is the most degradable, and ecological environment and health all produce certain harm, to the heavy metal in electroplating wastewater without Evilization processes the fundamental way being to solve industrial wastewater pollution.The heavy metal method in electroplating wastewater that processes at present is all for a certain Specific heavy metal ion, therefore needs to design no reaction unit and processing method, improves processing cost, reduce process Efficiency.Existing heavy metal in electroplating wastewater processes and mostly uses chemical precipitation method, adds alkali and be neutralized precipitation in waste water, and technique is grasped Make simple, but treatment effect is unstable, dosage big, settling efficiency is the highest, processing cost is high.Simultaneously for a low concentration huge sum of money Belong to water treatment effect the best, it is impossible to reach waste water reclamation and utilize and the purpose of heavy metal resources.
Summary of the invention
It is an object of the invention to provide and a kind of synchronize to remove the device and method of micro heavy in electroplating wastewater, by throwing Adding composite drug and utilize filtration treatment technology to combine, the heavy metal ion of trace in electroplating wastewater is removed on economical and efficient ground Chromium, copper, nickel, zinc, make water outlet reach the standard recycled, thus realize technique waste water resource.
It is an object of the invention to be achieved through the following technical solutions:
A kind of synchronize to remove the device of micro heavy in electroplating wastewater, react including A reaction zone, B reaction zone, C reaction zone and D District four part, wherein:
Described A reaction zone is provided with dispensing mouth and agitating device, and discharge outlet connects with the water inlet of B reaction zone；
The underfill of described B reaction zone has supporting layer, and it is arranged above Nanoscale Iron activated carbon adsorption filtering layer；
Described C reaction zone is provided with dispensing mouth and agitating device, and water inlet connects with the discharge outlet of B reaction zone, and discharge outlet is anti-with D The water inlet answering district connects；
The underfill of described D reaction zone has supporting layer, and it is arranged above titanium dichloride load chitosan absorption filtering layer, D reaction zone Discharge outlet connect with A reaction zone.
A kind of said apparatus is utilized to synchronize to remove the method for micro heavy in electroplating wastewater, including following method:
(1) electroplating wastewater enters in A reaction zone by collecting, and adds the composite drug a of 0.1～0.5g/L to A reaction zone, then Start agitating device, first carry out quickly (1500 ~ 2000 r/min) and stir 3～5min, make waste water be fully contacted with heavy metal, connect Entrance low rate mixing (200 ~ 500r/min) 8～10min, make heavy metal and composite drug a react formation precipitation.
(2) waste water processed through A reaction zone flows in B reaction zone, and precipitation is removed by Nanoscale Iron activated carbon adsorption filtering layer, Remove suspended impurity in waste water simultaneously.
(3) waste water processed through B reaction zone is in C reaction zone, adds composite drug b to C reaction zone, then starts Agitating device, first carries out quickly (1500 ~ 2000 r/min) and stirs 2～4min, make waste water be fully contacted with heavy metal, then enter Enter middling speed (800 ~ 1200 r/min) and stir 7～11min, make heavy metal and composite drug react formation flocculent deposit.
(4) waste water processed through C reaction zone flows in D reaction zone, and flocculent deposit is inhaled by titanium dichloride load chitosan Attached filtering layer is removed, and water outlet energy stably reaching standard discharges, if the most up to standard, then reenters A reaction zone.
Present invention have the advantage that
1, technological operation is simple, and reaction condition is gentle, can process various heavy simultaneously, improves removal efficiency, reduces place Reason cost.
2, utilize characteristic and the characterization of adsorptions of nano adsorption layer such as the oxidation of composite drug, complexation and chelating, by molten simultaneously Micro heavy in liquid is removed, and reaches waste water recycling and innoxious effect, has broad application prospects.
Accompanying drawing explanation
Fig. 1 is to synchronize to remove the structural representation of the device of micro heavy in electroplating wastewater, 1:A reaction zone, 1-1: fast Speed mixing A district, 1-2: mixing A district at a slow speed, 1-3: Jing Chen A district, 2:B reaction zone, 3:C reaction zone, 3-1: Jing Chen C district, 3-2: fast Speed mixing C district, 3-3: middling speed mixing C district, 4:D reaction zone, 5:A offer medicine mouth, and 6: always water intaking valve, 7:B offer medicine mouth, and 8:C offers medicine mouth 8,9:B section water intaking valves, 10:D offers medicine mouth, and 11:E offers medicine mouth, 12:B section outlet valve, and 13:F offers medicine mouth, 14:D section water intaking valve, 15:D Section drain valve, 16: supporting layer, 17: Nanoscale Iron activated carbon adsorption filtering layer, 18: titanium dichloride load chitosan absorption filtering layer, 19: Backwash drain valve, 20: backwash water intaking valve, 21: stable water outlet district, 22: reflux inlet, 23: reflux pump, 24: backwash water pump, 25: clear Water tank.
Detailed description of the invention
Below in conjunction with the accompanying drawings technical scheme is further described, but is not limited thereto, every to this Inventive technique scheme is modified or equivalent, without deviating from the spirit and scope of technical solution of the present invention, all should contain In protection scope of the present invention.
Detailed description of the invention one: as it is shown in figure 1, micro heavy in electroplating wastewater is removed in the synchronization that present embodiment provides Device be made up of, wherein A reaction zone 1, B reaction zone 2, reaction zone 4 four, C reaction zone 3 and D part the most successively:
Described A reaction zone 1 is provided with quickly mixing A district 1-1, at a slow speed mixing A district 1-2 and Jing Chen A district 1-3, wherein: quickly mix The top of A district 1-1 is provided with A dispensing mouth 5 and total water intaking valve 6, and bottom is provided with B dispensing mouth 7, quickly mixes the bottom of A district 1-1 Connecting with mixing at a slow speed A district 1-2, the top of mixing A district 1-2 connects with Jing Chen A district 1-3 at a slow speed, and Jing Chen A district 1-3 is provided above Having C dispensing mouth 8, the discharge outlet of Jing Chen A district 1-3 connects with the water inlet of B reaction zone 2 through B section water intaking valve 9；
The underfill of described B reaction zone 2 has supporting layer 16, and it is arranged above Nanoscale Iron activated carbon adsorption filtering layer 17；
Described C reaction zone 3 is provided with Jing Chen C district 3-1, quickly mixing C district 3-2 and middling speed mixing C district 3-3, wherein: Jing Chen C district The top of 3-1 is provided with D dispensing mouth 10, and bottom is provided with E dispensing mouth 11, and the water inlet of Jing Chen C district 3-1 is through B section outlet valve 12 Connecting with the discharge outlet of B reaction zone 2, the bottom of Jing Chen C district 3-1 connects with quickly mixing C district 3-2, quickly mixes C district 3-2's Top connects with middling speed mixing C district 3-3, and middling speed mixing 3-3 top, C district is provided with F dispensing mouth 13, middling speed mixing C district 3-3 draining Mouth connects with the water inlet of D reaction zone 4 through D section water intaking valve 14；
The underfill of described D reaction zone 4 has supporting layer 16, and it is arranged above titanium dichloride load chitosan absorption filtering layer 17, and D is anti- The outlet answering district 4 connects with quickly mixing A district 1-1 through D section drain valve 15.
Detailed description of the invention two: present embodiments provide for a kind of synchronizing to remove the side of micro heavy in electroplating wastewater Method, uses the device in detailed description of the invention one to synchronize to realize removing various heavy.The absorption of this technology utilization composite drug Property, complexing and precipitative properties, in A reaction zone, add composite drug a, and by the stirring of stirring paddle gradient, weight in waste water Metal is fully contacted with composite drug a, makes heavy metal generate precipitate morphology or complex pattern.Processed through A reaction zone is useless Water flows into B reaction zone, utilize the activated carbon loading Nanoscale Iron in the filtering layer of B reaction zone absorption, settle, the characteristic such as filtration, by molten Precipitate morphology and the heavy metals removal of complex pattern in liquid.In C reaction zone, add composite drug b, and by stirring paddle gradient Stirring, in waste water, the heavy metal of trace is fully contacted with composite drug b, micro heavy formed precipitation.At C reaction zone The waste water managed flows into D reaction zone, utilizes the absorption of the chitosan of load nano-titanium dioxide in the filtering layer of D reaction zone, chelates, wads a quilt with cotton The characteristic such as solidifying, is removed the heavy metal of trace, makes water outlet reach discharge standard.Concrete technology step is as follows:
(1) electroplating wastewater enters in A reaction zone by collecting, and adds the composite drug a of 0.1～0.5g/L, so in reactor Rear startup agitating device, the most quickly stirs 3～5min, makes waste water be fully contacted with heavy metal, subsequently enters low rate mixing 8 ～10min, make heavy metal and composite drug a react formation precipitation.
(2) waste water processed through A reaction zone flows in B reaction zone, and now the most of heavy metal in waste water is all formed Precipitation, behind B reaction zone, precipitation adsorbed by Nanoscale Iron activated carbon adsorption filtering layer, the characteristic such as retain removes, and removes waste water simultaneously Middle suspended impurity.
(3) waste water processed through B reaction zone, major part heavy metal is removed the most, still remains a little micro heavy in water, Waste water, in C reaction zone, now adds composite drug b to C reaction zone, then starts agitating device, the most quickly stirs 2 ～4min, make waste water be fully contacted with heavy metal, subsequently enter low rate mixing 7～11min, make heavy metal react with composite drug Form flocculent deposit.
(4) waste water processed through C reaction zone flows in D reaction zone, and micro heavy now defines flocculent deposit, Behind D reaction zone, flocculent deposit is removed by the titanium dichloride load chitosan absorption chelating of filtering layer, flocculating properties, water outlet Can discharge by stably reaching standard, if the most up to standard, then reenter A reaction zone.
Composite drug a and b add and the preparation of two absorption filtering layers is innovative point and the technological core of whole technique, tool Body requires as follows:
The preparation of composite drug a and dosing method:
Prepare composite drug a by weight, be made up of following raw material:
Composition A: sodium bicarbonate
NaHCO35～10；
Composition B:EDTA metal-chelator
Ethylenediaminetetraacetic acid 5～15；
Composition C:TMT metal agent for capturing
Tri-thiol 3～10；
Triazine trisodium salt 3～10.
Dosing method:
First pass through A dispensing mouth to be added when stirring by composition A medicament, then add composition B medicament by B dispensing mouth, After being allowed to be fully contacted 10min, stop stirring, add composition C medicament by C dispensing mouth, form effective absorption, complexation and wadding Solidifying system, makes each component property be improved and promote.
The preparation of composite drug b and dosing method:
Prepare composite drug b by weight, be made up of following raw material:
Components D: Fenton reagent
Ferrous sulfate 5～15；
Hydrogen peroxide 5～15；
Composition E:DTCR metal trapping precipitant
Aminodithioformic acid type chelating resin 5～10；
Composition F:PAM flocculation aid
Polyacrylamide 3～10.
Dosing method:
First pass through D dispensing mouth by components D adding of agent, after question response 3～5min, by E dispensing mouth add composition E medicament, soon After speed stirring 3～5min, add composition F medicament, simultaneously moderate-speed mixer 5～10min finally by F dispensing mouth, form oxidation, chela Close and the medicament of flocculation system.
The preparation of Nanoscale Iron activated carbon adsorption filtering layer:
First activated carbon is used 5～the ZnCl of 10%2Soak 16～20h, then with deionized water rinsing 2～4h, activated carbon is existed It is dried at 100～200 DEG C.Then a certain amount of FeSO is taken4, make FeSO4With quality of activated carbon ratio (4～8): 1, by this dissolve water In, by dry activated carbon and solution soaking 20～25h, be passed through nitrogen 5～10min and remove dissolved oxygen, by solution 200～ Roasting 1～3h at 400 DEG C, adds a certain amount of KBH when stirring after cooling4, make KBH4With the mol ratio of Fe be (4～ 6): 1, finally dehydrated alcohol and anaerobic water by anaerobic wash 2～3 times successively, are dried in 60～80 DEG C of vacuum drying ovens To Nanoscale Iron.
The preparation of titanium dichloride load chitosan absorption filtering layer:
Nano titanium oxide and chitosan are pressed (3～9): the mass ratio mixing of 1 adds the NaOH of 8～12mol/L, is sufficiently stirred for 20～40min, by mixed liquor roasting 20～25h at 160～200 DEG C, first it is washed with deionized 5～15min, then uses nothing Water-ethanol centrifuge washing 2～3 times, be dried 1～3h, last natural drying 1～3d at 40～60 DEG C by product.
Detailed description of the invention three: present embodiment is unlike detailed description of the invention two:
The preparation of composite drug a and dosing method:
Prepare composite drug a by weight, be made up of following raw material:
Composition A: sodium bicarbonate
NaHCO38；
Composition B:EDTA metal-chelator
Ethylenediaminetetraacetic acid 10；
Composition C:TMT metal agent for capturing
Tri-thiol 6；
Triazine trisodium salt 6.
Dosing method:
First pass through A dispensing mouth to be added when stirring by composition A medicament, then add composition B medicament by B dispensing mouth, After being allowed to be fully contacted 10min, stop stirring, add composition C medicament by C dispensing mouth, form effective absorption, complexation and wadding Solidifying system, makes each component property be improved and promote.
The preparation of composite drug b and dosing method:
Prepare composite drug b by weight, be made up of following raw material:
Components D: Fenton reagent
Ferrous sulfate 10；
Hydrogen peroxide 10；
Composition E:DTCR metal trapping precipitant
Aminodithioformic acid type chelating resin 8；
Composition F:PAM flocculation aid
Polyacrylamide 5.
Dosing method:
First pass through D dispensing mouth by components D adding of agent, after question response 5min, by E dispensing mouth add composition E medicament, quickly stir After mixing 5min, add composition F medicament, moderate-speed mixer 10min simultaneously finally by F dispensing mouth, form oxidation, chelating and floccule body The medicament of system.
The preparation of Nanoscale Iron activated carbon adsorption filtering layer:
First activated carbon is used 5～the ZnCl of 10%2Soak 18h, then use deionized water rinsing 3h, by activated carbon at 150 DEG C It is dried.Then a certain amount of FeSO is taken4, make FeSO4With quality of activated carbon than 6:1, this is dissolved in water, by dry activated carbon With solution soaking 24h, it is passed through nitrogen 10min and removes dissolved oxygen, by solution roasting 2h at 300 DEG C, at the shape of stirring after cooling A certain amount of KBH is added under state4, make KBH4It is 5:1 with the mol ratio of Fe, successively with the dehydrated alcohol of anaerobic and anaerobic water finally Wash 3 times, in 75 DEG C of vacuum drying ovens, be dried to obtain Nanoscale Iron.
The preparation of titanium dichloride load chitosan absorption filtering layer:
The mass ratio mixing that nano titanium oxide and chitosan are pressed 5:1 adds the NaOH of 10mol/L, is sufficiently stirred for 30min, will Mixed liquor is roasting 24h at 180 DEG C, is first washed with deionized 10min, then uses dehydrated alcohol centrifuge washing 3 times, by product 2h, last natural drying 2d it is dried at 50 DEG C.

Claims (9)

1. one kind synchronizes to remove the device of micro heavy in electroplating wastewater, it is characterised in that described device includes A reaction zone, B Reaction zone, C reaction zone and D reaction zone four part, wherein:
Described A reaction zone is provided with dispensing mouth and agitating device, and discharge outlet connects with the water inlet of B reaction zone；
The underfill of described B reaction zone has supporting layer, and it is arranged above Nanoscale Iron activated carbon adsorption filtering layer；
Described C reaction zone is provided with dispensing mouth and agitating device, and water inlet connects with the discharge outlet of B reaction zone, and discharge outlet is anti-with D The water inlet answering district connects；
The underfill of described D reaction zone has supporting layer, and it is arranged above titanium dichloride load chitosan absorption filtering layer, D reaction zone Discharge outlet connect with A reaction zone.
The device of micro heavy in electroplating wastewater is removed in synchronization the most according to claim 1, it is characterised in that described A is anti- District is answered to be provided with quickly mixing A district, at a slow speed mixing A district and Jing Chen A district, wherein: quickly the top in mixing A district is provided with A dispensing Mouthful and total water intaking valve, bottom is provided with B and offers medicine mouth, and quickly the bottom in mixing A district connects with mixing A district at a slow speed, mixes at a slow speed A district Top connect with Jing Chen A district, Jing Chen A district be provided above C offer medicine mouth, the discharge outlet in Jing Chen A district is anti-with B through B section water intaking valve The water inlet answering district connects.
The device of micro heavy in electroplating wastewater is removed in synchronization the most according to claim 1, it is characterised in that described C is anti- Answer district to be provided with Jing Chen C district, quickly mixing C district and middling speed and mix C district, wherein: the top in Jing Chen C district is provided with D dispensing mouth, under Portion is provided with E dispensing mouth, and the water inlet in Jing Chen C district connects with the discharge outlet of B reaction zone through B section outlet valve, the bottom in Jing Chen C district Connecting with quickly mixing C district, quickly the top in mixing C district connects with middling speed mixing C district, and middling speed mixing top, C district is provided with F and throws Medicine mouth, middling speed mixing C district discharge outlet connects with the water inlet of D reaction zone through D section water intaking valve.
The most according to claim 1 synchronize to remove the device of micro heavy in electroplating wastewater, it is characterised in that described in receive The preparation method of rice ferrum activated carbon adsorption filtering layer is as follows:
First activated carbon is used 5～the ZnCl of 10%2Soak 16～20h, then with deionized water rinsing 2～4h, activated carbon is existed It is dried at 100～200 DEG C；Then a certain amount of FeSO is taken4, make FeSO4With quality of activated carbon ratio (4～8): 1, by this dissolve water In, by dry activated carbon and solution soaking 20～25h, be passed through nitrogen 5～10min and remove dissolved oxygen, by solution 200～ Roasting 1～3h at 400 DEG C, adds a certain amount of KBH when stirring after cooling4, make KBH4With the mol ratio of Fe be (4～ 6): 1；Finally dehydrated alcohol and anaerobic water by anaerobic wash 2～3 times successively, are dried in 60～80 DEG C of vacuum drying ovens To Nanoscale Iron.
The device of micro heavy in electroplating wastewater is removed in synchronization the most according to claim 1, it is characterised in that described two The preparation method of titania oxide supported chitosan absorption filtering layer is as follows:
Nano titanium oxide and chitosan are pressed (3～9): the mass ratio mixing of 1 adds the NaOH of 8～12mol/L, is sufficiently stirred for 20～40min, by mixed liquor roasting 20～25h at 160～200 DEG C, first it is washed with deionized 5～15min, then uses nothing Water-ethanol centrifuge washing 2～3 times, be dried 1～3h, last natural drying 1～3d at 40～60 DEG C by product.
6. one kind utilizes device described in claim 1-5 any claim to synchronize to remove the side of micro heavy in electroplating wastewater Method, it is characterised in that described method step is as follows:
(1) electroplating wastewater enters in A reaction zone by collecting, and adds the composite drug a of 0.1～0.5g/L to A reaction zone, then Start agitating device, the most quickly stir 3～5min, make waste water be fully contacted with heavy metal, subsequently enter low rate mixing 8～ 10min, makes heavy metal and composite drug a react formation precipitation；
(2) waste water processed through A reaction zone flows in B reaction zone, and precipitation is removed, simultaneously by Nanoscale Iron activated carbon adsorption filtering layer Remove suspended impurity in waste water；
(3) waste water processed through B reaction zone is in C reaction zone, adds composite drug b to C reaction zone, then starts stirring Device, the most quickly stirs 2～4min, makes waste water be fully contacted with heavy metal, subsequently enters moderate-speed mixer 7～11min, makes Heavy metal and composite drug react formation flocculent deposit；
(4) waste water processed through C reaction zone flows in D reaction zone, and flocculent deposit is by the absorption filter of titanium dichloride load chitosan Layer is removed, and water outlet energy stably reaching standard discharges, if the most up to standard, then reenters A reaction zone.
The most according to claim 6 synchronize to remove the method for micro heavy in electroplating wastewater, it is characterised in that described soon Speed mixing speed is 1500 ~ 2000 r/min, and moderate-speed mixer speed is 800 ~ 1200 r/min, low rate mixing speed is 200 ~ 500r/min。
The method of micro heavy in electroplating wastewater is removed in synchronization the most according to claim 6, it is characterised in that described multiple Close medicament a by weight, be made up of following raw material:
Composition A: sodium bicarbonate
NaHCO35～10；
Composition B:EDTA metal-chelator
Ethylenediaminetetraacetic acid 5～15；
Composition C:TMT metal agent for capturing
Tri-thiol 3～10；
Triazine trisodium salt 3～10.
The method of micro heavy in electroplating wastewater is removed in synchronization the most according to claim 6, it is characterised in that described multiple Close medicament b by weight, be made up of following raw material:
Components D: Fenton reagent
Ferrous sulfate 5～15；
Hydrogen peroxide 5～15；
Composition E:DTCR metal trapping precipitant
Aminodithioformic acid type chelating resin 5～10；
Composition F:PAM flocculation aid
Polyacrylamide 3～10.
CN201610384706.1A 2016-06-02 2016-06-02 A kind of synchronous device and method for removing micro heavy in electroplating wastewater Active CN106007056B (en)

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CN106582534A (en) * 2017-01-07 2017-04-26 北京源清益壤环保科技有限公司 Modified active carbon adsorbent for removing nickel from polluted water and preparation method for modified active carbon adsorbent
CN108772101A (en) * 2018-08-16 2018-11-09 南京工业大学 A kind of efficient metal complex molecule catalyst and its preparation and application
CN109843901A (en) * 2016-10-25 2019-06-04 Yamasa 酱油株式会社 The purification process of P1, P4- bis- (uridine 5 ' -) tetraphosphate
CN110272085A (en) * 2019-07-30 2019-09-24 江南大学 A kind of modified cyanobacteria biology carbon composite and the application in processing electroplating wastewater
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CN109843901A (en) * 2016-10-25 2019-06-04 Yamasa 酱油株式会社 The purification process of P1, P4- bis- (uridine 5 ' -) tetraphosphate
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CN110272085A (en) * 2019-07-30 2019-09-24 江南大学 A kind of modified cyanobacteria biology carbon composite and the application in processing electroplating wastewater
CN115180749A (en) * 2022-08-28 2022-10-14 黄河水利职业技术学院 Heavy metal wastewater treatment equipment
CN115180749B (en) * 2022-08-28 2023-05-16 黄河水利职业技术学院 Heavy metal wastewater treatment equipment

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