CN203960016U - Heavy metal device in solid waste is removed and reclaimed to electrochemistry - Google Patents

Heavy metal device in solid waste is removed and reclaimed to electrochemistry Download PDF

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Publication number
CN203960016U
CN203960016U CN201420147549.9U CN201420147549U CN203960016U CN 203960016 U CN203960016 U CN 203960016U CN 201420147549 U CN201420147549 U CN 201420147549U CN 203960016 U CN203960016 U CN 203960016U
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China
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arc
cylindrical
cylindrical tube
electrode
circular
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Withdrawn - After Issue
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CN201420147549.9U
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Chinese (zh)
Inventor
胡勤海
萧晨霞
田耘
裴毓雯
张旭
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Zhejiang University ZJU
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Zhejiang University ZJU
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Abstract

The utility model discloses a kind of electrochemistry and remove and reclaim heavy metal device in solid waste, the utility model is made up of electrochemical reactor, cathode electrode, anode electrode and cationic exchange membrane, and described electrochemical reactor entirety is for right cylinder is by being made up of cylindrical column casing, inner cylindrical tube, circular bottom plate and two fixing membrane support clamping plate of arc.Described inner cylindrical tube center is provided with cathode electrode, cylindrical column casing inner side is provided with laminating circular anode electrode, described fixing film clamping plate are that both sides semi-circular bracket is for fixing cationic exchange membrane, be fixed between the fixing membrane support clamping plate of inner cylindrical tube and arc, electrochemical reactor bottom discharge pipe is positioned at place of inner cylindrical tube bottom centre, feed-pipe and discharge nozzle symmetry are positioned at cylindrical column casing outside, and are connected with force (forcing) pump, and negative and positive level is connected with power supply.The utlity model has cost of manufacture low, simple to operate, processing efficiency is high, heavy metal can be separated with waste and the advantage such as resource utilization recovery.

Description

Heavy metal device in solid waste is removed and reclaimed to electrochemistry
Technical field
The utility model relates to offal treatment and resource technology field, relates in particular to a kind of electrochemistry and removes and reclaim heavy metal device in solid waste.
Background technology
Because current China is for exploitation, smelting and the processing of heavy metal, cause many heavy metals to enter into atmosphere, water, soil and cause serious environmental pollution as lead, tribute, nickel, cadmium etc.Heavy metal has enriching, be difficult to degrade in environment, and its toxicity all can damage animals and plants greatly, China GB8978-1996 " integrated wastewater discharge standard ", GB4284-84 " pollutent control criterion in agricultural mud " has clear and definite regulation to the heavy metal content in the waste water of discharge and in agricultural mud.Therefore need the heavy metal in waste water, soil and mud to remove.And heavy metal plays vital effect in the multiple industry of China, make the research of its resource utilization can reach the dual purpose that reduces environmental pollution and the wasting of resources for reclaim heavy metal from solid waste, there is certain economic worth and environmental benefit.
At present the method for disposal of heavy metal is mainly contained to microbial method, chemical method, phytoremediation and electrochemical process etc.Because electrochemical method is simple to operate, stable, be not easy to cause secondary pollution etc. to there is some superiority.But, traditional treatment unit is positioned over waste between negative and positive level, all adds electrolytic solution, and cannot make full use of current efficiency in cathode compartment and anolyte compartment, and increase ion migration length and caused the problem that processing efficiency is lower, and mainly rested on " innoxious " stage.Therefore improve treatment unit and be that electrochemical process is removed and the key of the middle heavy metal of recycling the waste.
Summary of the invention
The utility model is for the deficiency of existing treatment unit, proposed a kind of electrochemistry and remove and reclaim the device of heavy metal in solid waste, and equipment cost is low, and operation is convenient, simple to operate.
Heavy metal device in solid waste is removed and reclaimed to a kind of electrochemistry, comprises electrochemical reactor, cathode electrode, anode electrode and cationic exchange membrane;
Described electrochemical reactor, is made up of cylindrical column casing, inner cylindrical tube, circular bottom plate and two fixing membrane support clamping plate of arc; Two bottom surface opened of cylindrical column casing and inner cylindrical tube, and be coaxially fixed in circular bottom plate, circular bottom plate diameter is identical with cylindrical column casing diameter, cylindrical column casing, inner cylindrical tube and circular bottom plate surround a circular interior space and an annular external space, on inner cylindrical tube sidewall, have two symmetrical arc-shaped through-holes, circular bottom plate circle centre position is provided with rising pipe, and cylindrical column casing lower part is symmetrically arranged with feed-pipe and discharge nozzle; Inner cylindrical tube outside is provided with the fixing membrane support clamping plate of two arcs, on the fixing membrane support clamping plate of each arc, have one and inner cylindrical tube arc-shaped through-hole arc-shaped through-hole of the same size, the corresponding setting of arc-shaped through-hole of the fixing membrane support clamping plate of inner cylindrical tube arc-shaped through-hole and arc, described cationic exchange membrane is arranged on inner cylindrical tube and arc is fixed between membrane support clamping plate; Between the fixing membrane support clamping plate of inner cylindrical tube, cationic exchange membrane and arc, install waterproof gasket additional; Described cathode electrode is cylindrical electrode, be arranged on inner cylindrical tube axle center place, described anode electrode is annular tubular electrode, be fitted on the inner side-wall of cylindrical column casing, negative electrode anode is connected with power supply respectively, on feed-pipe and discharge nozzle, be respectively equipped with valve, and be connected to pressure pump respectively, on described rising pipe, be also provided with valve.
Described power supply is constant voltage dc source; Described cylindrical electrode is cylindrical stainless steel electrode; Annular tubular electrode is annular ruthenium platinum titanium alloy electrode;
Cathode electrode and anode electrode are exchanged, cathode electrode is changed on the inner side-wall that tubular ring electrode is fitted in cylindrical column casing, anode electrode is changed into cylindrical electrode and is placed on inner cylindrical tube axle center place, cationic exchange membrane replaces with anion-exchange membrane, now cylindrical column casing is cathode compartment, and inner cylindrical tube is anolyte compartment.
Advantage of the present utility model: effectively utilized the effect of anode and cathode electrochemical reaction, increase effective contact area of waste and electrode, increase the film exchange area between waste and electrolytic solution, reduce ion migration distance, heavy metal removing rate is high, and utilization rate of electrical is high, has improved the problem that heavy metal reclaims simultaneously, the dual purpose that reduces pollution and resource recovery be can reach, environmental value and economic benefit had concurrently.
Brief description of the drawings
Fig. 1 is device schematic diagram of the present utility model;
Fig. 2 is reactor body schematic three dimensional views of the present utility model;
Fig. 3 is the fixing membrane support clamping plate schematic diagram of the utility model reactor annular;
Fig. 4 is the utility model reactor wiring layout.
Embodiment
Below in conjunction with specific embodiment, the utility model is further described, but the scope of application of the present utility model is not limited to this.
As shown in Figure 1, heavy metal device in solid waste is removed and reclaimed to a kind of electrochemistry, comprises electrochemical reactor, cathode electrode 1, anode electrode 3, constant voltage dc source 5 and cationic exchange membrane 2;
As shown in Figure 2,3, 4, described electrochemical reactor, is made up of cylindrical column casing 8, inner cylindrical tube 7, circular bottom plate 12 and two fixing membrane support clamping plate 13 of arc; Two bottom surface opened of cylindrical column casing and inner cylindrical tube, and be coaxially fixed in circular bottom plate, circular bottom plate diameter is identical with cylindrical column casing diameter, cylindrical column casing, inner cylindrical tube and circular bottom plate surround a circular interior space and an annular external space, on inner cylindrical tube sidewall, have two symmetrical arc-shaped through-holes, circular bottom plate circle centre position is provided with rising pipe 10, and cylindrical column casing lower part is symmetrically arranged with feed-pipe 11 and discharge nozzle 9; Inner cylindrical tube outside is provided with the fixing membrane support clamping plate of two arcs, on the fixing membrane support clamping plate of each arc, have one and inner cylindrical tube arc-shaped through-hole arc-shaped through-hole of the same size, the corresponding setting of arc-shaped through-hole of the fixing membrane support clamping plate of inner cylindrical tube arc-shaped through-hole and arc, described cationic exchange membrane is arranged on inner cylindrical tube and arc is fixed between membrane support clamping plate; Between the fixing membrane support clamping plate of inner cylindrical tube, cationic exchange membrane and arc, install waterproof gasket additional; Described cathode electrode 1 is cylindrical stainless steel electrode, be arranged on inner cylindrical tube axle center place, described anode electrode 3 is tubular ruthenium platinum titanium alloy electrode, be fitted on the inner side-wall of cylindrical column casing, negative electrode anode is connected with constant voltage dc source 5 respectively, on feed-pipe and discharge nozzle, be respectively equipped with valve, and be connected to respectively pressure pump 6, on described rising pipe, be also provided with valve 4.
Embodiment 1
The waste of the present embodiment processing is Hangzhou seven lattice Sewage Plant second pond mud, and the anode of employing is ruthenium platinum titanium alloy tubular ring electrode, and negative electrode is stainless steel cylindrical electrode.Described negative electrode anode is connected with constant pressure and flow direct supply, and voltage is 15V, and electrolytic solution is 0.05mol/L sodium chloride solution 1.5L, electrolysis 96h under room temperature condition.
Sludge treatment technique flow process is as follows: cationic exchange membrane and pad folder are attached between inner tank theca and two blocks of ring support plates, and supporting plate screws with screw and nut.Described anode electrode and outer tube inner wall laminating are placed, the mud of need processing is added in annular urceolus by opening for feed, pass through discharge port, pipeline and valve import electrochemical reactor through force (forcing) pump, deployed electrolytic solution is joined in inner core, fix cathode electrode, on the electrode in reactor, add volts DS by direct supply, mud is through electrochemical reactor, pipeline, valve and force (forcing) pump circulation mix, after handling, discharge from discharge port, after processing, electrolytic solution is discharged through reactor bottom water outlet, solid-liquid separation reclaims heavy metal precipitation, be dried to constant weight.
Test-results is as shown in table 1:
? Zinc Zn Copper Cu Plumbous Pb
Before processing (mg/kg) 1362.67 275.55 142.86
After processing (mg/kg) 259.41 58.41 57.22
Clearance (%) 80.96 78.80 59.95
Reclaim heavy metal compound precipitation 2.97g.
Embodiment 2
The waste of the present embodiment processing is mud after the seven lattice Sewage Plant filter presss of Hangzhou, and the anode of employing is ruthenium platinum titanium alloy cylindrical electrode, and negative electrode is the netted ring electrode of stainless steel.Described negative electrode anode is connected with constant pressure and flow direct supply, and voltage is 18V, and electrolytic solution is 0.05 mol/L sodium chloride solution 2.5L, electrolysis 120h under room temperature condition.
Sludge treatment technique flow process is as follows: cationic exchange membrane and pad folder are attached between inner tank theca and two blocks of ring support plates, and supporting plate screws with screw and nut.Described anode electrode is positioned over to inner cylindrical tube axle center place, the mud of need processing is joined in inner core, by cathode electrode fit cylindrical column casing inwall place, deployed electrolytic solution imports electrochemical reactor by discharge port, pipeline and valve through force (forcing) pump, on the electrode in reactor, add volts DS by direct supply, electrolytic solution is through electrochemical reactor, pipeline, valve and force (forcing) pump circulation, after handling, discharge from discharge port, solid-liquid separation reclaims heavy metal precipitation, be dried to constant weight, after processing, mud is discharged through reactor bottom outlet.
Test-results is as shown in table 2:
? Zinc Zn Copper Cu Plumbous Pb
Before processing (mg/kg) 1888.19 288.55 233.54
After processing (mg/kg) 167.52 85.54 72.12
Clearance (%) 91.13 70.36 69.12
Reclaim heavy metal compound precipitation 2.12g.
Embodiment 3
The waste of the present embodiment processing is Pb, Cd, Zn combined contamination soil, and the anode of employing is ruthenium platinum titanium alloy tubular ring electrode, and negative electrode is stainless steel cylindrical electrode.Described negative electrode anode is connected with constant pressure and flow direct supply, and voltage is 18V, and electrolytic solution is 0.05mol/L sodium chloride solution 1.5L, electrolysis 120h under room temperature condition.
Soil treatment technical process is as follows: cationic exchange membrane and pad folder are attached between inner tank theca and two blocks of ring support plates, and supporting plate screws with screw and nut.Described anode electrode and outer tube inner wall laminating are placed, the soil of need processing is added in annular urceolus by opening for feed, pass through discharge port, pipeline and valve import electrochemical reactor through force (forcing) pump, deployed electrolytic solution is joined in inner core, fix cathode electrode, on the electrode in reactor, add volts DS by direct supply, soil is through electrochemical reactor, pipeline, valve and force (forcing) pump circulation mix, after handling, discharge from discharge port, after processing, electrolytic solution is discharged through reactor bottom water outlet, solid-liquid separation reclaims heavy metal precipitation, be dried to constant weight.
Test-results is as shown in table 3:
? Zinc Zn Cadmium Cd Plumbous Pb
Before processing (mg/kg) 767.56 12.03 1075.03
After processing (mg/kg) 152.44 1.01 203.37
Clearance (%) 80.14 91.60 81.08
Reclaim heavy metal compound precipitation 1.95g.

Claims (6)

1. heavy metal device in solid waste is removed and reclaimed to electrochemistry, comprises electrochemical reactor, cathode electrode, anode electrode and cationic exchange membrane;
It is characterized in that: described electrochemical reactor, is made up of cylindrical column casing, inner cylindrical tube, circular bottom plate and two fixing membrane support clamping plate of arc; Two bottom surface opened of cylindrical column casing and inner cylindrical tube, and be coaxially fixed in circular bottom plate, circular bottom plate diameter is identical with cylindrical column casing diameter, cylindrical column casing, inner cylindrical tube and circular bottom plate surround a circular interior space and an annular external space, on inner cylindrical tube sidewall, have two symmetrical arc-shaped through-holes, circular bottom plate circle centre position is provided with rising pipe, and cylindrical column casing lower part is symmetrically arranged with feed-pipe and discharge nozzle; Inner cylindrical tube outside is provided with the fixing membrane support clamping plate of two arcs, on the fixing membrane support clamping plate of each arc, have one and inner cylindrical tube arc-shaped through-hole arc-shaped through-hole of the same size, the corresponding setting of arc-shaped through-hole of the fixing membrane support clamping plate of inner cylindrical tube arc-shaped through-hole and arc, described cationic exchange membrane is arranged on inner cylindrical tube and arc is fixed between membrane support clamping plate; Described cathode electrode is cylindrical electrode, be arranged on inner cylindrical tube axle center place, described anode electrode is annular tubular electrode, be fitted on the inner side-wall of cylindrical column casing, negative electrode anode is connected with power supply respectively, on feed-pipe and discharge nozzle, be respectively equipped with valve, and be connected to pressure pump respectively, on described rising pipe, be also provided with valve.
2. heavy metal device in solid waste is removed and reclaimed to electrochemistry according to claim 1, it is characterized in that: described power supply is constant voltage dc source.
3. heavy metal device in solid waste is removed and reclaimed to electrochemistry according to claim 1, it is characterized in that: described cylindrical electrode is cylindrical stainless steel electrode.
4. heavy metal device in solid waste is removed and reclaimed to electrochemistry according to claim 1, it is characterized in that: annular tubular electrode is annular ruthenium platinum titanium alloy electrode.
5. heavy metal device in solid waste is removed and reclaimed to electrochemistry according to claim 1, it is characterized in that: between the fixing membrane support clamping plate of inner cylindrical tube, cationic exchange membrane and arc, install waterproof gasket additional.
6. heavy metal device in solid waste is removed and reclaimed to electrochemistry, comprises electrochemical reactor, cathode electrode, anode electrode and anion-exchange membrane;
It is characterized in that: described electrochemical reactor, is made up of cylindrical column casing, inner cylindrical tube, circular bottom plate and two fixing membrane support clamping plate of arc; Two bottom surface opened of cylindrical column casing and inner cylindrical tube, and be coaxially fixed in circular bottom plate, circular bottom plate diameter is identical with cylindrical column casing diameter, cylindrical column casing, inner cylindrical tube and circular bottom plate surround a circular interior space and an annular external space, on inner cylindrical tube sidewall, have two symmetrical arc-shaped through-holes, circular bottom plate circle centre position is provided with rising pipe, and cylindrical column casing lower part is symmetrically arranged with feed-pipe and discharge nozzle; Inner cylindrical tube outside is provided with the fixing membrane support clamping plate of two arcs, on the fixing membrane support clamping plate of each arc, have one and inner cylindrical tube arc-shaped through-hole arc-shaped through-hole of the same size, the corresponding setting of arc-shaped through-hole of the fixing membrane support clamping plate of inner cylindrical tube arc-shaped through-hole and arc, described anion-exchange membrane is arranged on inner cylindrical tube and arc is fixed between membrane support clamping plate; Described cathode electrode is tubular ring electrode, be fitted on the inner side-wall of cylindrical column casing, described anode electrode is cylindrical electrode electrode, be placed on inner cylindrical tube axle center place, negative electrode anode is connected with power supply respectively, on feed-pipe and discharge nozzle, be respectively equipped with valve, and be connected to pressure pump respectively, on described rising pipe, be also provided with valve.
CN201420147549.9U 2014-03-28 2014-03-28 Heavy metal device in solid waste is removed and reclaimed to electrochemistry Withdrawn - After Issue CN203960016U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103896468A (en) * 2014-03-28 2014-07-02 浙江大学 Device for electrochemically removing and recycling heavy metals in solid waste
CN105642664A (en) * 2016-03-16 2016-06-08 江西省环境保护科学研究院 Enhancement type electrodynamic force in-situ soil remediation device and method
CN105884157A (en) * 2016-05-31 2016-08-24 浙江大学 Method for removing and recovering heavy metal in sludge through electrolytic method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103896468A (en) * 2014-03-28 2014-07-02 浙江大学 Device for electrochemically removing and recycling heavy metals in solid waste
CN103896468B (en) * 2014-03-28 2015-11-18 浙江大学 A kind of electrochemistry is removed and reclaims heavy metal device in solid waste
CN105642664A (en) * 2016-03-16 2016-06-08 江西省环境保护科学研究院 Enhancement type electrodynamic force in-situ soil remediation device and method
CN105642664B (en) * 2016-03-16 2019-07-26 江西省环境保护科学研究院 A kind of reinforced electric power original position soil prosthetic device and method
CN105884157A (en) * 2016-05-31 2016-08-24 浙江大学 Method for removing and recovering heavy metal in sludge through electrolytic method

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C14 Grant of patent or utility model
GR01 Patent grant
C25 Abandonment of patent right or utility model to avoid double patenting
AV01 Patent right actively abandoned

Granted publication date: 20141126

Effective date of abandoning: 20151118