CN103130308A - Electrochemical waste water treatment system and method for performing waste water treatment by using same - Google Patents
Electrochemical waste water treatment system and method for performing waste water treatment by using same Download PDFInfo
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- CN103130308A CN103130308A CN2013100916564A CN201310091656A CN103130308A CN 103130308 A CN103130308 A CN 103130308A CN 2013100916564 A CN2013100916564 A CN 2013100916564A CN 201310091656 A CN201310091656 A CN 201310091656A CN 103130308 A CN103130308 A CN 103130308A
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Abstract
The invention discloses an electrochemical waste water treatment system and a method for performing waste water treatment by using the same. The system comprises an electric reaction tower and an air floatation tower arranged at the upper part of the electric reaction tower, wherein the electric reaction tower is sequentially provided with a distribution region, a FeC filler region, an electrode region, a flocculation region and a diversion region from bottom to top; an electrode support beam is arranged blow the electrode region; swirling plates are arranged at both ends of the flocculation region; the air floatation tower is sequentially provided with a water filtering region, a sand filter layer, an air floatation separation region and a residue bucket; an opening of the residue bucket is positioned above the air floatation separation region; and the distribution region is connected with a water inlet pump for providing waste water. The electrochemical waste water treatment system disclosed by the invention has the advantages of simple equipment structure, small occupied area, simple mounting operation and low required investment; according to the electrochemical waste water treatment method disclosed by the invention, sewage is subjected to oxidation reduction and flocculation through the electric reaction tower and is subjected to solid-liquid separation through the air floatation tower; and the electrochemical waste water treatment method has the advantages of simple process, high treatment efficiency and low waste water treatment cost.
Description
Technical field
The present invention relates to technical field of waste water processing, relate in particular to a kind of electrochemistry Waste Water Treatment and use the method that it carries out wastewater treatment.
Background technology
Since reform and opening-up, the industrial economy of China has obtained development fast, but also caused serious environmental pollution simultaneously, the waste water that wherein produces in industry, agricultural development process is particularly serious to the pollution of environment, the impurity such as organism, inorganics, heavy metal and greasy dirt that often contain a large amount of hard degradations in trade effluent, have a strong impact on the mankind's health and living environment, also aggravating the nervous situation of China's water resources simultaneously.
For waste water is processed again, the harm of minimizing to environment and human health, people are devoted to the research of method of wastewater treatment always, comprise Physical, chemical method and biological process etc., but there is the shortcoming that equipment is complicated, investment is large, treatment process is long, processing cost is high in above-mentioned treatment process.People have studied and have adopted electrochemical method to process the technique of waste water on this basis, the method has the advantages such as processing efficiency is high, floor space is little, easy to operate, and sometimes can need not to add chemical reagent in treating processes, be a kind of green technology of environmentally safe, become the main method of carrying out at present wastewater treatment.But adopt the electrochemical treatment system and method to carry out easily causing in the process of wastewater treatment the passivation of electrode, need to regularly carry out the regeneration of electrode, increased processing cost; Simultaneously in the process of wastewater treatment, the impurity such as the mud in waste water are easily assembled the surface that sticks to electrode, therefore, need at set intervals to interrupt to the treating processes of waste water and electrode is carried out cleaning operation, will cause the reduction of waste water treatment efficiency like this, running cost is higher, is unsuitable for the occasion of the continuous wastewater treatment of large flow.
Summary of the invention
The objective of the invention is provides a kind of electrochemistry Waste Water Treatment for the deficiencies in the prior art, and this device structure is simple, floor space is little, and fitting operation is easy, required less investment.
Another object of the present invention is to provide a kind of method that above-mentioned treatment system is carried out wastewater treatment of using, and can make wastewater treatment be in continuous running status, has improved the efficient of wastewater treatment, is conducive to reduce costs.
In order to realize above purpose, the present invention by the following technical solutions.
a kind of electrochemistry Waste Water Treatment, it is comprised of electric reaction tower and air supporting tower, described air supporting tower is arranged at the top of described electric reaction tower, described electric reaction tower is disposed with the range of distribution from bottom to top, the FeC packing area, electrode district, flocculation zone and guiding region, be provided with orifice plate between described range of distribution and FeC packing area, the two ends of described flocculation zone are provided with spiral board, described air supporting tower is disposed with filtered water section from bottom to top, sand filter blanket, flotation separation zone and slag bucket, the opening of described slag bucket is positioned at the top of flotation separation zone, described range of distribution is connected be used to the intake pump that waste water is provided.
Wherein, the bottom of described slag bucket is provided with for the scum pipe of discharging scum silica frost, and described filtered water section is provided with for the water shoot of discharging drainage.
Wherein, described electric reaction tower is the vertical cylinder shape, and described air supporting tower is set in the top of electric reaction tower, and described flotation separation zone is arranged at the top of guiding region.
Wherein, described electrode district is provided with battery lead plate, preferred positive plate is the Ti/Ru composite anode plate, Ti/Ru composite anode plate smooth surface, the bubble diameter of generation is less and evenly concentrated, and the bubble diameter more than 90% is between 10～30 μ m, air flotation effect is good, the stable performance of Ti/Ru composite anode plate, do not dissolve in strong acid media in addition, long service life; Described negative plate is stainless steel plate, and the diameter of the bubble of generation is less and evenly concentrated.
Wherein, described negative plate and positive plate are alternately arranged, many group negative plates and positive plate are alternately arranged, can increase the contact area of battery lead plate and waste water, be conducive to improve waste water treatment efficiency, preferably, battery lead plate adopts the decoration form of concentric-ring pattern, and by frame hanging above the FeC packing area.
Wherein, described FeC packing area is filled with the FeC filler, and described FeC filler is a kind of mixture that comprises the Determination of multiple metal elements such as Fe, AL, Mn, and electrolytic reaction in occuring after described FeC filler contacts with waste water is decomposed and produced a large amount of Fe
3+And Al
3+, and then be hydrolyzed into Fe(OH in water)
2Flocs unit and AL(OH)
3Flocs unit.
Described flocculation zone is filled with baton round, and preferred, described baton round is the hollow plastic pellet, lighter weight, and under the impact of current and ascending gas, baton round can be the multi-direction rolling of fluidization, is conducive to Fe
3+And Al
3+Fast hydrolyzing becomes flocs unit, and the pollutent in absorption waste water, has improved waste water treatment efficiency.
Wherein, also comprise recycle pump, the feed-water end of described recycle pump is by the pipeline communication guiding region, and the water side of recycle pump is by the pipeline communication range of distribution.
Wherein, described range of distribution is connected with for compressed-air actuated air arm is provided to the range of distribution.
A kind of method of electrochemistry wastewater treatment, it is comprised of following steps:
(1) pending waste water is injected the range of distribution, waste water passes FeC filler that described orifice plate upwards promotes the FeC packing area and is fluidization and rolls up and down and enter electrode district, forms the three-dimensional fluidized bed electrolyzer;
(2) at electrode district, the H that negative plate produces
2With the reduction of the part pollutent in waste water, positive plate produces O
2With the part pollutant oxidation in waste water, the FeC filler produces a large amount of Fe
3+And Al
3+, and be hydrolyzed into Fe(OH in water)
2Flocs unit and AL(OH)
3Flocs unit, Fe(OH)
2Flocs unit and AL(OH)
3The bubble that pollutent in flocs unit absorption waste water and cathode-anode plate produce floats up to flocculation zone;
(3) at flocculation zone, spiral board makes the current of rising be rotated, baton round constantly rolls, collides, superposes under the effect of rotary water current and gas, makes flocs unit constantly condense and grows up, and current and flocs unit pass guiding region with cyclone mode and enter the flotation separation zone;
(4) in the flotation separation zone, flocs unit continues floating under the effect of bubble, and is rotated current and presses to the tower wall, and clear water enters filtered water section after being passed down through sand filter blanket, completes separating of flocs unit and water;
(5) flocs unit of floating is constantly accumulated on the top of flotation separation zone, forms scum silica frost, falls into slag bucket when the opening of the high dirt-excluding bucket of scum silica frost of accumulation, and drains into the system outside by slag bucket.
Preferably, when injecting waste water to the range of distribution, pass into continuously pressurized air to the range of distribution by the air arm.
Compared with prior art, the present invention has the following advantages:
(1) electrochemistry Waste Water Treatment of the present invention, device structure is simple, fitting operation is easy, is arranged at the top of described electric reaction tower due to the air supporting tower, so floor space is little, required less investment;
(2) electrochemical wastewater treatment method of the present invention, in the process of carrying out wastewater treatment, the filler of electrode district below is fluidised rolling up and down, and filler expand into electrode district, forms three-dimensional, three-phase fluidized bed electrolyzer, in this process, battery lead plate is constantly cleaned, and has not only effectively stopped the generation of battery lead plate passivation phenomenon, and battery lead plate is difficult for assembling mud and bubble, guaranteed carrying out continuously of wastewater treatment process, processing efficiency is high;
(3) electrochemical wastewater treatment method of the present invention, in the process of carrying out wastewater treatment, the FeC filler produces a large amount of Fe
3+And Al
3+Can be hydrolyzed into Fe(OH)
2And Al(OH)
3Pollutent in flocs unit absorption waste water, the O that can the adsorption electrode plate produces of flocs unit simultaneously
2And H
2And float, enter the process that solid-liquid separation is completed in the flotation separation zone;
(4) slag bucket of air supporting tower can automatically be assembled scum silica frost and discharge, and has save the slag scraper utilization, and required equipment is few, cost is low.
Description of drawings
Fig. 1 is the structural representation of a kind of electrochemistry Waste Water Treatment of the present invention.
Fig. 2 is the process flow diagram of electrochemical wastewater treatment method of the present invention.
Reference numeral comprises:
1-electric reaction tower; 2-air supporting tower; 3-range of distribution; 4-FeC packing area; 5-electrode district;
6-flocculation zone; 7-guiding region; 8-orifice plate; 9-spiral board; 10-filtered water section; 11-sand filter blanket; 12-flotation separation zone; 13-slag bucket; 14-intake pump; 15-scum pipe; 16-water shoot; 17-battery lead plate; 18-FeC filler; 19-baton round; 20-recycle pump; 21-air arm; 22-electrode supporting beam.
Embodiment
Below in conjunction with embodiment, the present invention is described in detail.
as shown in Figure 1, a kind of electrochemistry Waste Water Treatment, it is comprised of electric reaction tower 1 and air supporting tower 2, described air supporting tower 2 is arranged at the top of described electric reaction tower 1, described electric reaction tower 1 is disposed with range of distribution 3 from bottom to top, FeC packing area 4, electrode district 5, flocculation zone 6 and guiding region, be provided with orifice plate 8 between described range of distribution 3 and FeC packing area 4, the below of described electrode district 5 is provided with electrode supporting beam 22, the two ends of described flocculation zone 6 are provided with spiral board 9, described air supporting tower 2 is disposed with filtered water section 10 from bottom to top, sand filter blanket 11, flotation separation zone 12 and slag bucket 13, the opening of described slag bucket 13 is positioned at the top of flotation separation zone 12, described range of distribution 3 is connected be used to the intake pump 14 that waste water is provided, electrochemistry Waste Water Treatment of the present invention, device structure is simple, fitting operation is easy, is arranged at the top of described electric reaction tower 1 due to air supporting tower 2, so floor space is little, required less investment, is conducive to utilization and extention.
Wherein, the bottom of described slag bucket 13 is provided with for the scum pipe 15 of discharging scum silica frost, described filtered water section 10 is provided with for the water shoot 16 of discharging drainage, in the process of carrying out wastewater treatment, the flocs unit of floating 12 top is constantly accumulated in the flotation separation zone, forms scum silica frost, fall into slag bucket 13 when the opening of the high dirt-excluding bucket 13 of scum silica frost of accumulation, and drain into the system outside by scum pipe 15, and save the slag scraper utilization, required equipment is few, cost is low.
wherein, described electric reaction tower 1 is the vertical cylinder shape, described air supporting tower 2 is set in the top of electric reaction tower 1, described flotation separation zone 12 is arranged at the top of guiding region, the top of described air supporting tower 2 is cylindric and diameter greater than the diameter of described electric reaction tower 1, in the process of carrying out sewage disposal, sewage after flocculating by flocculation zone 6 enters flotation separation zone 12 through guiding region, because Waste Water Treatment volume herein enlarges rapidly, make the flow velocity of the waste water of carrying a large amount of flocs units and bubble secretly slow down suddenly, flocs unit continues the top that floating arrives flotation separation zone 12 under the effect of bubble, clear water enters filtered water section 10 after filtering through sand filter blanket 11, complete the solid-liquid separation process.
Wherein, described electrode district 5 is provided with battery lead plate 17, and wherein positive plate is the Ti/Ru composite anode plate, and negative plate is stainless steel plate, and under the state of energising, positive plate produces a large amount of O
2With the part pollutant oxidation in waste water, the H that negative plate produces
2With the reduction of the part pollutent in waste water, these diameters drive the floating of flocs unit after the bubble of 0.2～0.4 μ m is flocculated body absorption, enter flotation separation zone 12 and complete solid-liquid separation.
Wherein, described negative plate and positive plate be layout alternately, and battery lead plate 17 is large with the contact area of waste water, is conducive to improve waste water treatment efficiency.
Wherein, described FeC packing area 4 is filled with FeC filler 18, the FeC filler 18 a large amount of Fe of generation
3+And Al
3+Can be hydrolyzed into Fe(OH)
2And Al(OH)
3Pollutent in flocs unit absorption waste water, described flocculation zone 6 is filled with baton round 19, baton round 19 constantly rolls, collides, superposes under the effect of current and gas, making flocs unit constantly condense grows up, and enter flotation separation zone 12 by guiding region, improve the efficient of flocculation, increased sewage load in the unit time.
Further, also comprise recycle pump 20, the feed-water end of described recycle pump 20 is by the pipeline communication guiding region, the water side of recycle pump 20 is by pipeline communication range of distribution 3, according to different waste water qualities and to the requirement of degree for the treatment of, the sewage that will enter guiding region by recycle pump 20 refills range of distribution 3 and flow is regulated, and can extend the duration of contact of sewage and FeC filler 18, battery lead plate 17, baton round 19, improves the Disposal quality of sewage.
Wherein, described range of distribution 3 is connected with for 3 providing compressed-air actuated air arm 21 to the range of distribution, 3 passes into pressurized air by air arm 21 to the range of distribution, and the fluidization that more is conducive to FeC filler 18 is rolled up and down, can produce more Fe on the one hand
3+And Al
3+, improve flocculation efficiency; Be conducive on the other hand improve the scouring dynamics of 18 pairs of battery lead plates 17 of FeC filler, prevent the passivation phenomenon that battery lead plate 17 causes because depositing a large amount of scum silica frost, guaranteed continuity and the Disposal quality of wastewater treatment.
As shown in Figure 2, a kind of method of electrochemistry wastewater treatment, it is comprised of following steps:
(1) pending waste water is injected range of distribution 3, waste water passes FeC filler 18 that described orifice plate 8 upwards promotes FeC packing area 4 interior fillings and is fluidization and rolls up and down and enter electrode district 5, forms the using three-dimensional three-phase fluidized bed electrolyzer;
(2) at electrode district 5, the H that negative plate produces
2With the reduction of the part pollutent in waste water, positive plate produces O
2With the part pollutant oxidation in waste water, FeC filler 18 produces a large amount of Fe
3+And Al
3+, described Fe
3+And Al
3+Can be hydrolyzed into Fe(OH in water)
2Flocs unit and AL(OH)
3Flocs unit, Fe(OH)
2Flocs unit and AL(OH)
3The bubble that pollutent in flocs unit absorption waste water and cathode-anode plate produce floats up to flocculation zone 6;
(3) at flocculation zone 6, spiral board 9 makes the current of rising be rotated, baton round 19 constantly rolls, collides, superposes under the effect of rotary water current and gas, makes flocs unit constantly condense and grows up, and current and flocs unit pass guiding region 7 with cyclone mode and enter flotation separation zone 12;
(4) in the flotation separation zone 12, flocs unit continues floating under the effect of bubble, and is rotated current and presses to the tower wall, and clear water enters filtered water section 10 after being passed down through sand filter blanket 11, completes separating of flocs unit and water;
(5) flocs unit of floating 12 top is constantly accumulated in the flotation separation zone, forms scum silica frost, falls into slag bucket 13 when the opening of the high dirt-excluding bucket 13 of scum silica frost of accumulation, and drains into the system outside by scum pipe 15.
Preferably, when injecting waste water to range of distribution 3,3 pass into continuously pressurized air by air arm 21 to the range of distribution.
The treatment effect contrast of electrochemical wastewater treatment method of the present invention and common dissolved air flotation and conventional supernatant method is recorded a demerit as shown in table 1.
Table 1.
| Processing parameter | Electric floating method of the present invention | Dissolved air flotation | Conventional supernatant method |
| Air Bubble Size/um | 15±10 | 80±20 | —— |
| Energy consumption degree/ton water | 0.04±0.01 | 0.06±0.02 | —— |
| Air consumption m 3/ ton water | —— | 0.04±0.02 | —— |
| Flocculation agent | Fe 2+/Al 3+ | PAC PAM | PAC PAM |
| HRT/ |
15±5 | 30±10 | 100±20 |
| Scum silica frost % volume of water | <0.1 | <0.4 | <3 |
| Oil removal rate/% | 99-99.5 | 80-95 | 50-70 |
| SS clearance/% | 99-99.5 | 90-95 | 90-95 |
Above data show, carry out wastewater treatment by electrochemical wastewater treatment method of the present invention, not only can effectively remove the impurity such as greasy dirt in waste water, and processing efficiency is high, energy consumption is low, can significantly reduce the processing cost of waste water.
Should be noted that; above embodiment is only in order to illustrate technical scheme of the present invention; but not limiting the scope of the invention; although with reference to preferred embodiment, the present invention has been done to explain; those of ordinary skill in the art is to be understood that; can modify or be equal to replacement technical scheme of the present invention, and not break away from essence and the scope of technical solution of the present invention.
Claims (10)
1. electrochemistry Waste Water Treatment, it is comprised of electric reaction tower and air supporting tower, described air supporting tower is arranged at the top of described electric reaction tower, it is characterized in that: described electric reaction tower is disposed with the range of distribution from bottom to top, the FeC packing area, electrode district, flocculation zone and guiding region, be provided with orifice plate between described range of distribution and FeC packing area, the below of described electrode district is provided with the electrode supporting beam, the two ends of described flocculation zone are provided with spiral board, described air supporting tower is disposed with filtered water section from bottom to top, sand filter blanket, flotation separation zone and slag bucket, the opening of described slag bucket is positioned at the top of flotation separation zone, described range of distribution is connected be used to the intake pump that waste water is provided.
2. electrochemistry Waste Water Treatment according to claim 1, is characterized in that, the bottom of described slag bucket is provided with for the scum pipe of discharging scum silica frost, and described filtered water section is provided with for the water shoot of discharging drainage.
3. electrochemistry Waste Water Treatment according to claim 1, is characterized in that, described electric reaction tower is the vertical cylinder shape, and described air supporting tower is set in the top of electric reaction tower, and described flotation separation zone is arranged at the top of guiding region.
4. electrochemistry Waste Water Treatment according to claim 1, is characterized in that, described electrode district is provided with battery lead plate, and wherein positive plate is the Ti/Ru composite anode plate, and negative plate is stainless steel plate.
5. electrochemistry Waste Water Treatment according to claim 4, is characterized in that, described negative plate and positive plate are alternately arranged.
6. electrochemistry Waste Water Treatment according to claim 1, is characterized in that, described FeC packing area is filled with the FeC filler, and described flocculation zone is filled with baton round.
7. electrochemistry Waste Water Treatment according to claim 1, is characterized in that, also comprises recycle pump, and the feed-water end of described recycle pump is by the pipeline communication guiding region, and the water side of recycle pump is by the pipeline communication range of distribution.
8. electrochemistry Waste Water Treatment according to claim 1, is characterized in that, described range of distribution is connected with for compressed-air actuated air arm is provided to the range of distribution.
9. the method that application rights requires 1～8 described electrochemistry Waste Water Treatment of any one to carry out wastewater treatment, is characterized in that, it is comprised of following steps:
(1) pending waste water is injected the range of distribution, waste water passes FeC filler that described orifice plate upwards promotes the FeC packing area and is fluidization and rolls up and down and enter electrode district, forms the three-dimensional fluidized bed electrolyzer;
(2) at electrode district, the H that negative plate produces
2With the reduction of the part pollutent in waste water, positive plate produces O
2With the part pollutant oxidation in waste water, the FeC filler produces a large amount of Fe
3+And Al
3+, and be hydrolyzed into Fe(OH in water)
2Flocs unit and AL(OH)
3Flocs unit, Fe(OH)
2Flocs unit and AL(OH)
3The bubble that pollutent in flocs unit absorption waste water and cathode-anode plate produce floats up to flocculation zone;
(3) at flocculation zone, spiral board makes the current of rising be rotated, baton round constantly rolls, collides, superposes under the effect of rotary water current and gas, makes flocs unit constantly condense and grows up, and current and flocs unit pass guiding region with cyclone mode and enter the flotation separation zone;
(4) in the flotation separation zone, flocs unit continues floating under the effect of bubble, and is rotated current and presses to the tower wall, and clear water enters filtered water section after being passed down through sand filter blanket, completes separating of flocs unit and water;
(5) flocs unit of floating is constantly accumulated on the top of flotation separation zone, forms scum silica frost, falls into slag bucket when the opening of the high dirt-excluding bucket of scum silica frost of accumulation, and drains into the system outside.
10. the method for wastewater treatment according to claim 9, is characterized in that, when injecting waste water to the range of distribution, passes into continuously pressurized air to the range of distribution by the air arm.
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|---|---|---|---|
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| CN2013100916564A CN103130308B (en) | 2013-03-21 | 2013-03-21 | Electrochemical waste water treatment system and method for performing waste water treatment by using same |
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| CN103130308B CN103130308B (en) | 2013-12-11 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103787468A (en) * | 2014-01-26 | 2014-05-14 | 成都玉龙化工有限公司 | Electrolysis wastewater treatment device, PVB (Polyvinyl Butyral) production wastewater treatment device and PVB production wastewater treatment process |
| CN104961281A (en) * | 2015-07-16 | 2015-10-07 | 江苏大学 | Three-dimensional electrochemical high-concentration wastewater treatment device |
| CN106430836A (en) * | 2016-11-08 | 2017-02-22 | 中国水产科学研究院渔业机械仪器研究所 | Integrated sewage purifying system for aquaculture and purifying method |
| CN113880323A (en) * | 2021-10-16 | 2022-01-04 | 浙江问源环保科技股份有限公司 | Electrochemistry sewage treatment system |
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| CN1078959A (en) * | 1993-01-10 | 1993-12-01 | 中山大学 | Fe-C flocculation bed device and be used to handle kitchen waste water |
| CN203128270U (en) * | 2013-03-21 | 2013-08-14 | 东莞市珠江海咸水淡化研究所 | Electrochemical wastewater treatment system |
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| JPS59166289A (en) * | 1983-03-11 | 1984-09-19 | Mitsukawa Kogyo Kk | Treatment of waste water by electrolysis |
| CN2083148U (en) * | 1991-01-04 | 1991-08-21 | 施德明 | High-frequency device of treatment of water with a cyclone plate |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103787468A (en) * | 2014-01-26 | 2014-05-14 | 成都玉龙化工有限公司 | Electrolysis wastewater treatment device, PVB (Polyvinyl Butyral) production wastewater treatment device and PVB production wastewater treatment process |
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| CN104961281A (en) * | 2015-07-16 | 2015-10-07 | 江苏大学 | Three-dimensional electrochemical high-concentration wastewater treatment device |
| CN106430836A (en) * | 2016-11-08 | 2017-02-22 | 中国水产科学研究院渔业机械仪器研究所 | Integrated sewage purifying system for aquaculture and purifying method |
| CN106430836B (en) * | 2016-11-08 | 2019-03-22 | 中国水产科学研究院渔业机械仪器研究所 | The integrated sewage water purification system and purification method of aquaculture |
| CN113880323A (en) * | 2021-10-16 | 2022-01-04 | 浙江问源环保科技股份有限公司 | Electrochemistry sewage treatment system |
| CN113880323B (en) * | 2021-10-16 | 2023-01-31 | 浙江问源环保科技股份有限公司 | Electrochemistry sewage treatment system |
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|---|---|
| CN103130308B (en) | 2013-12-11 |
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