CN202139091U - Sewage treatment electrolytic cell - Google Patents
Sewage treatment electrolytic cell Download PDFInfo
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- CN202139091U CN202139091U CN201120270502U CN201120270502U CN202139091U CN 202139091 U CN202139091 U CN 202139091U CN 201120270502 U CN201120270502 U CN 201120270502U CN 201120270502 U CN201120270502 U CN 201120270502U CN 202139091 U CN202139091 U CN 202139091U
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Abstract
The utility model discloses a sewage treatment electrolytic cell which comprises a cell body; the cell body is internally provided with at least two polar plates which are connected with a power supply and are installed in the center of the cell body; an interval is reserved between the bottom end of each poplar plate and the inner wall of the bottom of the cell body; an electrolytic area is formed at the area where the polar plates in the cell body are positioned; an interval area in the cell body, below the electrolytic area, is a sewage area, and an area in the cell body, above the electrolytic area, is a purified water area; and as the purified water area is arranged above the position adjacent to the electrolytic area, flocculate generated by electrolysis hardly settles to the bottom of the cell body, and most of the flocculate floats to the water surface along with bubbles to form a metallic oxide suspension layer, so that the flocculate content in the purified water area is low, and the water quality is good.
Description
Technical field
The utility model relates to a kind of water treatment device, particularly a kind of electrolyzer that is used to handle industrial circle sewage such as oil field, plating, printing and dyeing and rubbish squeezing sewage.
Background technology
Trade effluent is meant waste water, sewage and the waste liquid that produces in the Industrial processes, wherein contains the pollutent that produces in the industrial production materials, intermediate product and the product that lose with current and the production process.Along with developing rapidly of industry, the kind and the quantity of waste water rapidly increase, and is also extensive day by day and serious to the pollution of water body, threatens human beings'health and safety.Therefore, for the protection environment, the processing of trade effluent is more even more important than municipal sewage treatment.The existing chemical process that adopts is handled trade effluent more, and treatment process is: after the preliminary filtration of sewage, through in sewage, adding chemicals; In with waste water in residual harmful ion; Purify water through chemical means, but have following problem: adopt the high and easy generation secondary pollution of chemical process processing cost, and poor processing effect; Often do not reach emission standard, have huge managing risk.
The normal electrolytic process that adopts is carried out WWT in the prior art, and pole plate is housed in electrolyzer, and pole plate is provided with the polylith pole plate along the direction that is parallel to the electrolyzer bottom end of to the top; On pole plate, alternately be provided with opening, sewage gets into electrolyzer from the bottom, bottom-up labyrinth type opening on pole plate; Behind each pole plate of pile warp, finally flow out from the top, each pole plate connects the positive and negative electrode of power supply respectively; After the energising, under External Electrical Field, anode loses electronics generation oxidizing reaction; Negative electrode electron gain generation reduction reaction, objectionable impurities is removed.But still there is following weak point in it:
1, when the sewage that contains heavy metal substance is carried out electrolysis treatment; Hydrogen that effect produces and chemical reduction and the oxidizing reaction of the generation of the heavy metal substance in oxygen and the sewage because of brine electrolysis; Make in the body of pond in the water body in the electrolysis zone; Contain more heavy metal ion and throw out, though that it has passed through its water quality of electrolysis treatment is still not good enough; Simultaneously; The tiny bubble that produces in the electrolytic process can drive the less throw out of quality or metals ion is attached to bubble floating, forms MOX behind the metals ion ingress of air, and the MOX of lighter weight compiles the back sedimentation at the water surface; Water in the electrolysis zone in the electrolyzer causes secondary pollution; Simultaneously, MOX influences electrolytic efficiency after being deposited on the pole plate.
2, because the tiny bubble that produces in the electrolytic process; Make less throw out of quality or metals ion be attached to bubble floating; Produce colored MOX at liquid level and air contact position behind the ingress of air; MOX compiles at the water body end face, and forms the waste residue layer that suspends, and the water quality at water body top is affected.
The utility model content
The purpose of the utility model provides that a kind of electrolysis rear impurity content is low, the better WWT electrolyzer of purifying water effect.
The technical scheme that the utility model adopts is such: a kind of WWT electrolyzer comprises the pond body; Be provided with at least two pole plates in the body of pond, said pole plate links to each other with power supply, and said pole plate is installed on body middle part, pond; Leave spacing between said pole plate bottom and the pond body bottom interior wall; Said pole plate region forms electrolysis zone, and the pitch area that is positioned at the electrolysis zone below in the body of said pond is the contraminated zone, and the zone that is positioned at the electrolysis zone top in the body of said pond is a clean water area.
The zone that is positioned at the clean water area top in the body of said pond is the waste residue district; Adopt such structure, the water body and the air contact position of being rich in metals ion produce colored MOX, above clean water area, form the waste residue district that suspends.
The angle of said pole plate and body bottom surface, pond is 45 °～135 °.
Be parallel to each other between the said pole plate, said electrode thickness is 1.5mm～10mm; Adopt such structure, electrolysis zone internal electric field intensity is more even.
The spacing of said two neighboring pole plate is 3mm～20mm.Adopt such structure, can under the situation of consumes least electric energy, guarantee electrolytic efficiency, be convenient to the up-down of MOX and throw out thereof simultaneously.
Said pole plate is iron pole plate.Adopt iron pole plate to be easy to processing, simultaneously with low cost, the iron ion that forms after the electrolysis also very easily with atmospheric oxidation, the oxide compound of formation swims in not free settling of the water surface.
Said pole plate and inboard dismantled and assembled connection of pond body.Adopt such structure, can be so that change the pole plate that is prone to consumption.
Body inboard, said pond is provided with at least one pair of pole plate draw-in groove, and said pole plate draw-in groove is separately positioned on the opposed inwall of pond body.Adopt such structure, easy accessibility.
Said contraminated zone is communicated with water-in.Adopt such structure, the sewage of electrolyzer can adopt flexible pipe, hard tube, various ways such as in line to get into water-in, also can adopt pump pressurization input.
Said clean water area is communicated with pure water inlet.Adopt such structure, clean water area is through pure water inlet and external communications, can make water-out manners adopt flexible pipe, hard tube, various ways such as in line, is applicable to multiple different working conditions.
Said waste residue district is communicated with the waste residue outlet.When the sewage that contains heavy metal substance is carried out electrolysis treatment; Be different from common electrolysis, metals ion moves up with the hydrogen and the oxygen of electrolysis gained, and forms colored MOX at liquid level and air contact position; Swim on the water surface; Through adding waste residue outlet, can work as after the MOX swimmer forms, export through waste residue the MOX swimmer is discharged.
Said power supply is the pulse power.Adopt such structure, can select required electrolytic parameter, in electrolytic process, can regulate the pole plate cathode and anode directions through the pulse power according to the sewage quality, avoid pole plate because of for a long time not more change poles to, cause pole plate consumption too fast.
The said pulse power is the commutating pulse power supply.Adopt such structure, realize the automatic reverse between pole plate.
The frequency of the said pulse power is 3kHz～30kHz.The pulse power adopts frequency in the scope of 3kHz～30kHz, and consumes power is littler, and electrolysis effectiveness is good.
The voltage of the said pulse power is 50V～600V, and the dutycycle of the said pulse power is 10%～90%.It is 50V～600V that the pulse power adopts voltage, and dutycycle is 10%～90%, and consumes power is littler, and electrolysis effectiveness is good.
Said pond body internal layer is an insulation layer.Adopt such structure, play the insulating effect, to avoid pond body inwall to disturb electrolysis effectiveness, to increase current consumption at the electrolyzer internal layer.
Preferably, the angle between pole plate and body bottom surface, pond is 90 °, and the frequency of commutating pulse power supply is 10～20kHz, and the commutating pulse power supply is 200～500V, and dutycycle is 30%～60%, and the spacing of electrolysis zone adjacent plate is 4～10mm, and the thickness of pole plate is 2～4mm; Adopt such technical scheme, can make the best results of WWT.
In sum; Owing to adopted technique scheme, the beneficial effect of the utility model is: sewage is by the abundant electrolysis treatment of the supreme electrolysis zone of flowing through in the end, because clean water area is arranged on the top of next-door neighbour's electrolysis zone; The few part of the throw out that electrolysis produces is settled down to body bottom, pond; Major part is floated to water surface with bubble and forms the MOX suspended layer, and the foreign matter content in clean water area is low, and water quality is good.
Further, when the waste residue layer after the water surface compiles, in the contraminated zone, deposit, the impulse force when injecting through sewage drives sedimentary MOX and gets into once more that electrolysis treatment is carried out in the electrolysis zone or recoil is fallen.
Further, through the switching-over and the oscillating action of high-frequency pulse current, can avoid impurity to stick on the pole plate, thereby when improving electrolytic efficiency, power consumption, iron loss are all still less.
Description of drawings
The utility model will explain through example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is the structural representation of the utility model WWT electrolyzer;
Fig. 2 is the utility model WWT electrolyzer area schematic;
Fig. 3 is WWT electrolyzer internal polar plate and a current direction synoptic diagram in the prior art.
Mark among the figure: pond body-1; Pole plate-2; The pulse power-3; Contraminated zone-4; Electrolysis zone-5; Clean water area-6; Waste residue district-7; Water-in-8; Pure water inlet-9; Waste residue outlet-10; Draw-in groove-11; Protective shell-12; Skimmer-13.
Embodiment
Disclosed all characteristics in this specification sheets, or the step in disclosed all methods or the process except mutually exclusive characteristic and/or the step, all can make up by any way.
Disclosed arbitrary characteristic in this specification sheets (comprising any accessory claim, summary and accompanying drawing) is only if special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, only if special narration, each characteristic is an example in a series of equivalences or the similar characteristics.
As depicted in figs. 1 and 2, the utility model WWT electrolyzer comprises pond body 1, and body 1 inner body in pond is rectangular build; Body 1 inside in pond is followed successively by contraminated zone 4, electrolysis zone 5, clean water area 6 and waste residue district 7 from top to bottom, wherein, is provided with spacing between pole plate 2 bottoms and pond body 1 bottom interior wall; Electrolysis zone 5 is that body 1 inside in pond is positioned at the zone that pole plate 2 highly belongs to, and not electrolytic as yet water body district after to be waste water input in the pond body 1 from the water-in of pond body 1 bottom, contraminated zone 4 is in the zone of contraminated zone 4 between pond body 1 bottom and electrolysis zone 5; Effect because of brine electrolysis; Produce hydrogen and oxygen, can play chemical reduction and oxygenizement to pollutent in the waste water, and can produce tiny bubble; Make throw out or oil content be attached to bubble floating and rise to the top; Form waste residue district 7, waste residue district 7 normally swims in face top, pond, and the zone of part is a clean water area 6 between above the electrolysis zone 5 and waste residue district 7.Body 1 middle part in pond is provided with at least two pole plates that are parallel to each other 2; Pond body 1 is processed by insulating material; Every pole plate 2 all links to each other with the pulse power 3, and adjacent two pole plates 2 in energising back constitute an electrolysis passage, and the spacing between the adjacent plate 2 need guarantee that power consumption is less and be convenient to install, moves and maintenance; The spacing of adjacent plate 2 is 3mm～20mm, i.e. electrolysis width of channel is 3mm～20mm;
Pole plate 2 is installed on two sidewalls of pond body 1 along the direction that favours pond body 1 base plate; Preferably; Pole plate 2 is 45 °～135 ° with the angle of pond body 1 bottom surface; Each pole plate 2 bottom is identical with the distance of pond body 1 bottom after the installing and locating, and promptly each pole plate 2 all is positioned on the same height of pond body 1, and body 1 bottom in pond is positioned at the below at pond body 1 middle part.The cross section of pole plate 2 is a rectangle, and the thickness of pole plate 2 is 1.5mm～10mm.
Preferably, on the sidewall of pond body 1, be preset with in order to the draw-in groove 11 of pole plate 2 to be installed, pole plate 2 inserts draw-in groove 11 location.
In order to make pond body 1 not collided with by the external world, can be in the pond protective shell 12 of body 1 arranged outside, protective shell 12 is processed by metallic substance such as impact-resistant stainless steel or carbon steel, or adopts non-metallic material such as glass reinforced plastic.
The pulse power 3 is according to the regular hour rule; To 2 positive charge for some time of pole plate; Oppositely give pole plate 2 charging for some time then, positive charge for some time again then, form the alternately flow process of positive charge → reverse charging → positive charge; Promptly carry out so repeatedly, constitute the pulse power 3 alternate cycles.Through the change of paired pulses power supply 3 output signals, switch the sense of current of electrolysis passage.Load through such positive and negative electrode alternate power source, can reduce adjacent plate 2 self iron ion consumption, because the two poles of the earth are all solvable, more help the throwing out between metals ion and colloid simultaneously.Preferably, the frequency of the pulse power 3 is 10kHz to 20kHz.Preferably, the voltage of the pulse power 3 is 200V to 500V.
Preferably, the voltage of the pulse power 3 is 200V～600V, and the frequency of the pulse power 3 is 10kHz～20kHz, and dutycycle is 30%～60%, and the waveform of output is the rectangle square wave.
Body 1 bottom in pond is provided with the water-in 8 of trade effluent, and water-in 8 is communicated with pond body 1 inner contraminated zone 4, and water-in 8 is provided with strainer 6; The zone that is positioned at 4 tops, contraminated zone in the pond body 1 is an electrolysis zone 5, and pole plate 2 is arranged in the electrolysis zone 5, and electrolysis zone 5 tops are clean water area 6 in the pond body 1; Clean water area 6 is communicated with pure water inlet 9, and pure water inlet 9 is arranged on the sidewall on pond body 1 top, and clean water area 6 tops are waste residue district 7; Waste residue district 7 is communicated with waste residue outlet 10, because of the effect of brine electrolysis, produces hydrogen and oxygen; Can play chemical reduction and oxygenizement to pollutent in the waste water, and can produce tiny bubble, make throw out or oil content be attached to bubble floating and rise to waste residue district 7; Formation shifts to the colored MOX of liquid level, discharges through waste residue outlet 10 backs.
Pollutent in the water body at pond body 1 top can be to discharge through waste residue outlet 10, also can be after water purification be discharged through pond body 1 top, and externally deposition can reach deslagging water purifying effect equally.
Embodiment 1:
To shown in Figure 2, the utility model WWT electrolyzer comprises pond body 1 like Fig. 1, and body 1 inner body in pond is the square bodily form or cuboid; Body 1 arranged outside in pond has a protective shell 12, and protective shell 12 can be processed by metallic substance, like stainless steel etc.; Or process by non-metallic material, like glass reinforced plastic etc.The inwall of pond body 1 is processed by insulating material, and body 1 bottom in pond is provided with the water-in 8 of trade effluent, and water-in 8 is communicated with pond body 1 inner contraminated zone 4, and water-in 8 is provided with strainer 6; 4 tops, contraminated zone are electrolysis zone 5 in the pond body 1, and pole plate 2 is arranged in the electrolysis zone 5, and electrolysis zone 5 tops are clean water area 6 in the pond body 1; Clean water area 6 is communicated with pure water inlet 9, because of the effect of brine electrolysis, produces hydrogen and oxygen at anode; Can play chemical reduction and oxygenizement to pollutent in the waste water, and can produce tiny bubble, make throw out or oil content be attached to bubble floating and rise to clean water area 6; Form colored MOX and shift to clean water area 6; Pure water inlet is communicated with sedimentation basin, through pure water inlet water purification is together discharged together with waste residue, and waste residue and water purification autoprecipitation in sedimentation basin separates.
Be provided with two pole plates that are parallel to each other 2 in the pond body 1, pole plate 2 and 1 inboard dismantled and assembled connection of pond body, preferred, body 1 inboard in pond is provided with at least one pair of draw-in groove 11, and draw-in groove 11 is separately positioned on the pond body 1 opposed inwall.The angle that pond body 1 bottom surface and pole plate are 2 is 120 °, and the spacing of two pole plates 2 is 10mm, i.e. electrolysis width of channel is 10mm; The thickness of pole plate 2 is 1.5mm, and pole plate 2 is 100mm with the spacing of pond body 1 bottom, and two pole plates 2 all link to each other with the pulse power 3; Through the change of paired pulses power supply 3 output signals, switch the sense of current of electrolysis passage between the electrode, the frequency of the pulse power 3 is 3kHz; The voltage of the pulse power 3 is 100V; Dutycycle is 50%, and the ripple of output is the rectangle square wave, and the mean current of the pulse through pole plate 2 unit surfaces is 0.5A/dm
2
Mainly be made up of MOX, spraying and domestic sewerage in the sewage, the sewage staple is following: CODcr:270.1mg/L; PH=7.0; SS:1550mg/L; Aluminum ion: 7.2mg/L; Sulfate ion: 3.1mg/L; Cl ions: 28mg/L.Wherein, carry out chemical treatment after former scheme employing sodium hydroxide, SEPIGEL 305 and the water scavengine agent proportioning as control group.
It is following to handle the back water-quality guideline:
| Sequence number | The contrast project | Raw waste water | Former scheme | Present embodiment |
| 1 | COD ，mg/L | 270.1 | ＞100 | ＜60 |
| 2 | SS， mg/L | 1550 | 50 | <11.2 |
| 3 | PH | 7.0 | 7.2 | 6.8-7.4 |
Embodiment 2:
To shown in Figure 2, the utility model WWT electrolyzer comprises pond body 1 like Fig. 1, and body 1 bottom in pond is provided with the water-in 8 of trade effluent, and the place that is higher than water-in 8 in the pond body 1 is provided with pure water inlet 9.Be provided with three pole plates 2 in the pond body 1, the angle that pond body 1 bottom surface and pole plate are 2 is 45 °, on the sidewall of pond body 1, is preset with in order to the draw-in groove 11 of pole plate 2 to be installed; Pole plate 2 is through this location, draw-in groove 11 insertion pond bodies, 1 back, and the spacing of three pole plates 2 is 20mm, i.e. electrolysis width of channel is 20mm; The thickness of pole plate 2 is 10mm; Pole plate 2 is 80mm with the spacing of pond body 1 bottom, and three pole plates 2 all link to each other with the pulse power 3, the pulse that wherein pulse of the pulse power 3 can the right and wrong fixed cycle; Switch the sense of current of electrolysis passage through the pulse power 3; The pulse power 3 is 400V, and dutycycle is about 20%, and the mean current of the pulse through pole plate 2 unit surfaces is 0.2A/dm
2, it is following to handle the back water-quality guideline:
| Sequence number | The contrast project | Raw waste water | Former scheme | Present embodiment |
| 1 | COD ，mg/L | 270.1 | ＞100 | ＜84 |
| 2 | SS， mg/L | 1550 | 50 | <11.4 |
| 3 | PH | 7.0 | 7.2 | 6.8-7.3 |
Embodiment 3:
To shown in Figure 2, the utility model WWT electrolyzer comprises pond body 1 like Fig. 1, and body 1 bottom in pond is provided with the water-in 8 of trade effluent, and water-in 8 is communicated with pond body 1 inner contraminated zone 4, between water-in 8 and pond body 1, is provided with strainer 6; 4 tops, contraminated zone are electrolysis zone 5 in the pond body 1, and pole plate 2 is arranged in the electrolysis zone 5, and electrolysis zone 5 tops are clean water area 6 in the pond body 1; Clean water area 6 is communicated with pure water inlet 9, and clean water area 6 tops are waste residue district 7, and waste residue district 7 is provided with collection slag device; Waste residue district 7 is communicated with waste residue outlet 10, because of the effect of brine electrolysis, produces hydrogen and oxygen at anode; Can play chemical reduction and oxygenizement to pollutent in the waste water, and can produce tiny bubble, make throw out or oil content be attached to bubble floating and rise to waste residue district 7; Formation shifts to the colored MOX of liquid level, through collection slag device it is swept slightly and discharges to waste residue outlet 10 backs.
Be provided with 20 pole plates 2 in the pond body 1; The angle that pond body 1 bottom surface and pole plate are 2 is 80 °, and the spacing of 20 pole plates 2 is 3mm, i.e. electrolysis width of channel is 3mm; The thickness of pole plate 2 is 2mm; Pole plate 2 is 100mm with the spacing of pond body 1 bottom, and all the pulse power 3 of commutation cycle links to each other 20 pole plates 2 with having fixedly, forms nineteen electrolysis passage.Through having the fixedly pulse of the pulse power 3 of commutation cycle, Fixed Time Interval ground switches the primary current cathode and anode directions; Pure water inlet 9 tops are provided with skimmer 13, have fixedly that the frequency of the pulse power 3 of commutation cycle is 17kHz, have fixedly that the pulse power 3 of commutation cycle is 600V, and dutycycle is 90%, and the mean current of the pulse through pole plate 2 unit surfaces is 1A/dm
2, it is following to handle the back water-quality guideline:
| Sequence number | The contrast project | Raw waste water | Former scheme | Present embodiment |
| 1 | COD，mg/L | 270.1 | ＞100 | ＜80 |
| 2 | SS， mg/L | 1550 | 50 | <10 |
| 3 | PH | 7.0 | 7.2 | 6.8-7.2 |
The COD index that is wherein detected is meant COD, the oxygen amount of utilizing chemical oxidizing agent to be consumed the reducing substances oxygenolysis in the water.SS is meant suspended substance, and the size of suspended substance is all greater than 0.1 micron usually, and the composition of SS generally comprises protozoon, bath class, bacterium or the like, in the suspended substance of industrial sewage, also comprises the suspended substance of MOX.
The utility model is not limited to aforesaid embodiment.The utility model expands to any new feature or any new combination that discloses in this manual, and the arbitrary new method that discloses or step or any new combination of process.
Claims (16)
1. a WWT electrolyzer comprises the pond body, is provided with at least two pole plates in the body of pond; Said pole plate links to each other with power supply; It is characterized in that: said pole plate is installed on body middle part, pond, leaves spacing between said pole plate bottom and the pond body bottom interior wall, and body internal polar plate region, said pond forms electrolysis zone; The pitch area that is positioned at the electrolysis zone below in the body of said pond is the contraminated zone, and the zone that is positioned at the electrolysis zone top in the body of said pond is a clean water area.
2. WWT electrolyzer according to claim 1 is characterized in that: the zone that is positioned at the clean water area top in the body of said pond is the waste residue district.
3. WWT electrolyzer according to claim 1 is characterized in that: the angle of said pole plate and body bottom surface, pond is 45 °～135 °.
4. according to the described WWT electrolyzer of arbitrary claim in the claim 1 to 3, it is characterized in that: be parallel to each other between the said pole plate, said electrode thickness is 1.5mm～10mm.
5. according to the described WWT electrolyzer of arbitrary claim in the claim 1 to 3, it is characterized in that: the spacing of said two neighboring pole plate is 3mm～20mm.
6. according to the described WWT electrolyzer of arbitrary claim in the claim 1 to 3, it is characterized in that: said pole plate is iron pole plate.
7. according to the described WWT electrolyzer of arbitrary claim in the claim 1 to 3, it is characterized in that: said pole plate and inboard dismantled and assembled connection of pond body.
8. WWT electrolyzer according to claim 7 is characterized in that: the said device that removably connects is at least one pair of pole plate draw-in groove that the body inwall is oppositely arranged in the pond, and the quantity of said pole plate draw-in groove and said pole plate are suitable.
9. WWT electrolyzer according to claim 1 is characterized in that: said contraminated zone is communicated with water-in.
10. according to claim 1 or the described WWT electrolyzer of claim 9, it is characterized in that: said clean water area is communicated with pure water inlet.
11. WWT electrolyzer according to claim 2 is characterized in that: said waste residue district is communicated with the waste residue outlet.
12. WWT electrolyzer according to claim 1 is characterized in that: said power supply is the pulse power.
13. WWT electrolyzer according to claim 12 is characterized in that: the said pulse power is the commutating pulse power supply.
14. according to claim 12 or the described WWT electrolyzer of claim 13, it is characterized in that: the frequency of the said pulse power is 3kHz～30kHz.
15. according to claim 12 or 13 described WWT electrolyzers, it is characterized in that: the voltage of the said pulse power is 50V～600V, the dutycycle of the said pulse power is 10%～90%.
16. WWT electrolyzer according to claim 1 is characterized in that: said pond body internal layer is an insulation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120270502U CN202139091U (en) | 2011-07-28 | 2011-07-28 | Sewage treatment electrolytic cell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120270502U CN202139091U (en) | 2011-07-28 | 2011-07-28 | Sewage treatment electrolytic cell |
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| CN202139091U true CN202139091U (en) | 2012-02-08 |
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| CN201120270502U Expired - Fee Related CN202139091U (en) | 2011-07-28 | 2011-07-28 | Sewage treatment electrolytic cell |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106192512A (en) * | 2016-07-08 | 2016-12-07 | 湖南农业大学 | Heavy metal pollution district watermelon vine fiber extraction process |
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2011
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106192512A (en) * | 2016-07-08 | 2016-12-07 | 湖南农业大学 | Heavy metal pollution district watermelon vine fiber extraction process |
| CN106192512B (en) * | 2016-07-08 | 2017-12-15 | 湖南农业大学 | Heavy metal pollution area watermelon vine fiber extraction process technology |
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Owner name: CHENGDU KAIMAI ENVIRONMENTAL PROTECTION TECHNOLOGY Free format text: FORMER OWNER: CHENGDU K + M METALS CO., LTD. Effective date: 20131120 |
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Free format text: CORRECT: ADDRESS; FROM: 610500 CHENGDU, SICHUAN PROVINCE TO: 610041 CHENGDU, SICHUAN PROVINCE |
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Effective date of registration: 20131120 Address after: Wuhou District Frasers road Chengdu city Sichuan province 610041 No. 511 1 4 storey building No. 34 Patentee after: Chengdu Kaimai Environmental Protection Technology Co., Ltd. Address before: 610500 New Industrial Road, Xindu Industrial District, Sichuan, Chengdu Patentee before: Chengdu K & M Metals Co., Ltd. |
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Granted publication date: 20120208 Termination date: 20180728 |