CN101928091B - Electrocoagulation and secondary filtration-based vertical flow type air floatation water treatment device - Google Patents
Electrocoagulation and secondary filtration-based vertical flow type air floatation water treatment device Download PDFInfo
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- CN101928091B CN101928091B CN2010102835089A CN201010283508A CN101928091B CN 101928091 B CN101928091 B CN 101928091B CN 2010102835089 A CN2010102835089 A CN 2010102835089A CN 201010283508 A CN201010283508 A CN 201010283508A CN 101928091 B CN101928091 B CN 101928091B
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Abstract
The invention discloses an electrocoagulation and secondary filtration-based vertical flow type air floatation water treatment device, which comprises an air floatation barrel (8). A reaction barrel (9) is arranged in the air floatation barrel (8); the bottom of the reaction barrel (9) is provided with a releaser (5) connected with an air dissolving tank; a water outlet of a water inlet pipe (1) extends into the reaction barrel (9); a water inlet of the water inlet pipe (1) extends out of the reaction barrel (9) and is connected with a water supply pipe; and the water inlet of the water inlet pipe (1) is provided with a dosing device. The electrocoagulation and secondary filtration-based vertical flow type air floatation water treatment device is characterized in that: the lower part of the air floatation barrel (8) and the periphery of the reaction barrel (9) are provided with a porous plate (10); holes of the porous plate (10) are provided with drain caps (11); the porous plate (10) is provided with a filter layer (7); the lower part of the air floatation barrel (8) is provided with a drain outlet (6) used for draining and backwashing; the water inlet end of a water outlet pipe (4) extends to the lower part of the filter layer (7); and the water outlet end of the water outlet pipe (4) extends out of the air floatation barrel (8). The electrocoagulation and secondary filtration-based vertical flow type air floatation water treatment device has the advantages of simple structure and good quality of treated water.
Description
Technical field
The present invention relates to a kind of water treating equipment, especially a kind of vertical-flow air flotation water treatment device, specifically a kind for the treatment of processes not only need not dosing but also can solve the vertical-flow air flotation water treatment device based on electrocoagulation and secondary filtration of secondary settlement.
Background technology
As everyone knows, the air-flotation type water treating equipment are that all kinds of water technologies are water treatment device of using always, and it is comparatively desirable for the purification of water quality of suspended substance proportion about 1.The structure of traditional vertical airfloat equipment as shown in Figure 1, it comprises the air supporting tube, at water-in 1 place of air supporting tube chemicals dosing plant is installed, and in the air supporting reaction tube of air supporting tube reliever 5 is installed, reliever 5 is connected with the molten cylinder that produces dissolved air water.The air-flotation type water treating equipment mainly are thorough mixing in molten cylinder by pressure water and pressure air, suddenly decompression discharges again, enter from molten gas inlet mouth and to discharge countless tiny bubbles in the air supporting reaction tube, bubble can be adsorbed in uphill process on suspended substance or the oils, making it volume increases and floats, regularly the scum silica frost of removing come-up by slag scraper 3 is discharged from dirt discharge groove 2, and the water of all the other relative cleanings is drawn outside the air supporting tube by rising pipe 4.
Air supporting relies on bubble absorption to reach the purpose that purifies water, but there are a large amount of bubbles to vanish voluntarily mobile the reaching in bubble rising, the stop process of water inlet, therefore having a lot of proportions to be a bit larger tham 1 suspended substance can descend gradually because of bubble-break, form secondary settlement, influence effluent quality, this problem has restricted the performance of airfloat equipment usefulness, thereby airfloat equipment is commonly used for pre-treatment or middle-chain at present domestic, and non-terminal equipment.
For improving the suspended substance removal effect, need when water inlet, add medicament (flocculation agent) usually and form alumen ustum, be beneficial to the come-up effect, medicament expense accounts for more than 60% of whole service expense.If can by other physicochemical method not with medicament then to the conserve water processing cost, prevent that medicament Disabled from staying just to realizing absorption flocculation to suspended substance, increasing water quality has great importance, and to this, does not still have solution well at present.
Summary of the invention
The objective of the invention is can be because bubble breaks and causes proportion to be slightly larger than 1 suspended substance realizing secondary settlement in the bubble uphill process at existing vertical-flow air flotation device, influence the problem of effluent characteristics, and need constantly to add flocculation agent in the use and cause the too high problem of running cost, design and a kind ofly not only need not dosing but also can solve the vertical-flow air flotation water treatment device that secondary settlement is guaranteed effluent characteristics based on electrocoagulation and secondary filtration.
Technical scheme of the present invention is:
A kind of vertical-flow air flotation water treatment device based on electrocoagulation and secondary filtration, it comprises air supporting tube 8, be provided with reaction tube 9 in the air supporting tube 8, the bottom of reaction tube 9 is equipped with reliever 5, reliever 5 links to each other with molten cylinder, the water outlet of water inlet pipe 1 stretches in the reaction tube 9, the water-in of water inlet pipe 1 stretches out reaction tube 9 and links to each other with water-supply pipe, it is characterized in that in the described reaction tube 9 electrocoagulation device 12 being installed, porous plate 10 is installed around the bottom of described air supporting tube 8, the reaction tube 9, drain cap 11 is installed on the hole of porous plate 10, on porous plate 10, is provided with filtering layer 7; Be provided with the sewage draining exit 6 that has blowdown and back flushing concurrently in the bottom of air supporting tube 8; The feed-water end of rising pipe 4 stretches into the bottom of filtering layer 7, and stretch out outside the air supporting tube 8 water side of rising pipe 4.
The thickness of described filtering layer 7 is 200-600mm, and the particle diameter of filtrate is 0.5～1.2mm.
Described sewage draining exit 6 is connected with the water outlet and the blow-off pipe of molten cylinder respectively by three-way valve.
Described electrocoagulation device 12 is between the water outlet and reliever 5 of water inlet pipe 1.
The anode of described electrocoagulation device 12 is a metallic aluminium, and negative electrode is stainless plate.
Beneficial effect of the present invention:
The present invention carries out secondary filtration by making the filtering layer of process once more through flocculation treatment water, thoroughly which proportion is slightly larger than 1 fall because of the bubble contaminant filter that is deposited in the clear water zone that breaks, for improving effluent characteristics crucial effect is arranged, can be used as final water through the water quality after the present invention's processing, this also makes the vertical-flow air flotation water treatment device can be used as terminating unit and uses, greatly reduces the cost of water treatment suite of equipment.
The present invention is simple in structure, is easy to realize, and need not back flushing equipment and can finish back flushing to filtering layer, and it can utilize the sewage draining exit of former usefulness to link to each other with the molten cylinder that produces high pressure water and bubble, utilizes the pressure water of molten cylinder directly to recoil.
Air-float water treatment device of the present invention can be used as terminating unit and uses, and therefore can reduce the cost of whole water treatment production line.
The aluminium hydroxide that the present invention utilizes electrolysis principle to produce replaces flocculation agent, and it is low to have a cost, is easy to realize, saves the advantage of running cost, can save running cost more than 60%.Has the processing efficiency height simultaneously, the advantage that no medicament is residual.
Description of drawings
Fig. 1 is the structural representation of existing vertical-flow air flotation device.
Fig. 2 is a structural representation of the present invention.
Embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
As shown in Figure 2.
A kind of vertical-flow air flotation water treatment device based on electrocoagulation and secondary filtration, it comprises air supporting tube 8, the top of air supporting tube 8 is equipped with slag scraper 3 and dirt discharge groove 2, be provided with reaction tube 9 in the air supporting tube 8, the bottom of reaction tube 9 is equipped with reliever 5, (pressure water and pressure air be thorough mixing in molten cylinder with molten cylinder for reliever 5, in reaction tube 9, discharge countless tiny bubbles by reliever 5 again) link to each other, the water outlet of water inlet pipe 1 stretches in the reaction tube 9, the water-in of water inlet pipe 1 stretches out reaction tube 9 and links to each other with water-supply pipe, in the described reaction tube 9 electrocoagulation device 12 is installed, the installation site of electrocoagulation device 12 is preferably between the water outlet and reliever 5 of water inlet pipe 1, the anode of electrocoagulation device 12 adopts metallic aluminium (to can be piece, bar, sheet or club shaped structure), negative electrode is stainless plate, adopt DC power supply, voltage is safety voltage, and the growing amount of aluminium hydroxide can be regulated by the pilot circuit of routine.Porous plate 10 is installed around the bottom of described air supporting tube 8, the reaction tube 9, ABS drain cap 11 is installed on the hole of porous plate 10, on porous plate 10, be provided with filtering layer 7, the thickness of filtering layer 7 is 200-600mm (can select thickness according to handling the water yield), and it is the quartz sand of 0.5～1.2mm that filtrate can adopt particle diameter; Be provided with the sewage draining exit 6 that has blowdown and back flushing concurrently in the bottom of air supporting tube 8, sewage draining exit 6 is connected with the water outlet and the blow-off pipe of molten cylinder respectively by three-way valve, when needs carry out back flushing, only need open the valve road that connects molten cylinder, utilize high pressure in the molten cylinder to pour in the filtering layer 7 from drain cap 11 filtering layer is carried out back flushing, the water of back flushing can be external by dirt discharge groove 2 expelling tubes on air supporting tube top.The feed-water end of rising pipe 4 stretches into the bottom of filtering layer 7, and stretch out outside the air supporting tube 8 water side of rising pipe 4.
The present invention utilizes electrocoagulation to produce throwing out, can omit the former mechanism that adds flocculation agent, no medicament expense and no longer need use medicine system in the treating processes.Electrocoagulation of the present invention is to utilize electrochemical method to produce oxyhydroxide as flocculation agent, ultimate principle is: former water is passed through the electrocoagulation device, knockouts is provided with two electrodes, anode is that aluminium, negative electrode are stainless steel, after connecting direct current, the anode aluminum ion enters the hydroxide radical that produces with catholyte in the water and forms alumine hydroxide colloid, and the long-pending grain of absorption impurity, produces floss.The floss that generates forms throw out by the impurity in bonding numerous air-bubble come-up and the water behind the dissolved air water, and the cotton-shaped body refuse that top suspends can regularly be removed with slag scraper 3.The sewage draining exit 6 that the mud of bottom deposit can regularly pass through the bottom discharges.
No longer rise and form scum silica frost if the portion water of coming out from reaction tube 9 causes ratio to be slightly larger than 1 suspended substance because bubble breaks with bubble, sink to once more on the filtering layer 7, water-in from water shoot 4 after the clear water of clear water zone is passed by on one's way through filtering layer enters the water shoot, again outside the water outlet vent gas floating drum of water shoot.
The time that pending water stops in the air supporting treatment unit is about 40min, flow velocity is at 10m/h, this speed and gravity filter are approaching, thereby it is feasible with filtering layer, the back flushing mouth is connected with molten cylinder, need not to establish in addition the backwash water pump, and recoil water outlet and former slag-drip opening are shared, the recoil water-in can be shared with the raw sewage disposal mouth, need not to establish in addition.
The equipment prior aries that maybe can adopt all same as the prior art such as part that the present invention does not relate to slag scraper, molten cylinder are realized.
Claims (6)
1. vertical-flow air flotation water treatment device based on electrocoagulation and secondary filtration, it comprises air supporting tube (8), be provided with reaction tube (9) in the air supporting tube (8), the bottom of reaction tube (9) is equipped with reliever (5), reliever (5) links to each other with molten cylinder, the water outlet of water inlet pipe (1) stretches in the reaction tube (9), the water-in of water inlet pipe (1) stretches out reaction tube (9) and links to each other with water-supply pipe, it is characterized in that being equipped with in the described reaction tube (9) electrocoagulation device (12), the bottom of described air supporting tube (8), porous plate (10) is installed around the reaction tube (9), drain cap (11) is installed on the hole of porous plate (10), on porous plate (10), is provided with filtering layer (7); Be provided with the sewage draining exit (6) that has blowdown and back flushing concurrently in the bottom of air supporting tube (8); The feed-water end of rising pipe (4) stretches into the bottom of filtering layer (7), and stretch out outside the air supporting tube (8) water side of rising pipe (4).
2. the vertical-flow air flotation water treatment device based on electrocoagulation and secondary filtration according to claim 1, the thickness that it is characterized in that described filtering layer (7) is 200-600mm, the particle diameter of filtrate is 0.5～1.2mm.
3. the vertical-flow air flotation water treatment device based on electrocoagulation and secondary filtration according to claim 1 is characterized in that described sewage draining exit (6) is connected with the water outlet and the blow-off pipe of molten cylinder respectively by three-way valve.
4. the vertical-flow air flotation water treatment device based on electrocoagulation and secondary filtration according to claim 1 is characterized in that the dirt discharge groove (2) that the top of described air supporting tube (8) is equipped with slag scraper (3) and matches.
5. the vertical-flow air flotation water treatment device based on electrocoagulation and secondary filtration according to claim 1 is characterized in that described electrocoagulation device (12) is positioned between the water outlet and reliever (5) of water inlet pipe (1).
6. the vertical-flow air flotation water treatment device based on electrocoagulation and secondary filtration according to claim 1, the anode that it is characterized in that described electrocoagulation device (12) is a metallic aluminium, negative electrode is stainless plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102835089A CN101928091B (en) | 2010-09-16 | 2010-09-16 | Electrocoagulation and secondary filtration-based vertical flow type air floatation water treatment device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102835089A CN101928091B (en) | 2010-09-16 | 2010-09-16 | Electrocoagulation and secondary filtration-based vertical flow type air floatation water treatment device |
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| CN101928091A CN101928091A (en) | 2010-12-29 |
| CN101928091B true CN101928091B (en) | 2011-12-14 |
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| CN110498489A (en) * | 2019-07-31 | 2019-11-26 | 江苏金博源环保科技有限公司 | ECPD electrofloatation complete set of equipments |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2672050Y (en) * | 2003-07-28 | 2005-01-19 | 姜峰 | Electrochemical Processor for waste water |
| CN101215060A (en) * | 2007-12-27 | 2008-07-09 | 江苏工业学院 | Device for treating oil field waste water |
| CN201785277U (en) * | 2010-09-16 | 2011-04-06 | 江苏新龙鼎环保成套工程有限公司 | Vertical-flow type air flotation water treatment device based on electric condensation and secondary filtration |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09201586A (en) * | 1996-01-26 | 1997-08-05 | Sanyo Electric Co Ltd | Electrolytic flotation type water-purifying apparatus |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2672050Y (en) * | 2003-07-28 | 2005-01-19 | 姜峰 | Electrochemical Processor for waste water |
| CN101215060A (en) * | 2007-12-27 | 2008-07-09 | 江苏工业学院 | Device for treating oil field waste water |
| CN201785277U (en) * | 2010-09-16 | 2011-04-06 | 江苏新龙鼎环保成套工程有限公司 | Vertical-flow type air flotation water treatment device based on electric condensation and secondary filtration |
Non-Patent Citations (1)
| Title |
|---|
| 余志等.涡流电凝聚-气浮-接触过滤组合工艺处理洗车废水的试验研究.《工业用水与废水》.2008,第39卷(第02期),42-45. * |
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Owner name: XINLONGDING HOLDING GROUP CO., LTD. Free format text: FORMER NAME: JIANGSU XINLONGDING COMPLETE ENVIRONMENTAL PROTECTION ENGINEERING CO., LTD. |
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Address after: 214215 Jiangsu city of Nanjing province Yixing city and Town Industrial Zone South Patentee after: XINLONGDING HOLDING GROUP Co.,Ltd. Address before: 214215 Jiangsu city of Nanjing province Yixing city and Town Industrial Zone South Patentee before: Jiangsu Xin Longding Environmental Protection Engineering Co.,Ltd. |
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Effective date of registration: 20211116 Address after: 334000 zone a, Luyang Industrial Park, Shangrao high tech Zone, Guangfeng District, Shangrao City, Jiangxi Province Patentee after: Jiangxi longxinding environmental protection equipment Co.,Ltd. Address before: 214215 Nanxin Industrial Zone, HeQiao Town, Yixing City, Nanjing, Jiangsu Province Patentee before: XINLONGDING HOLDING GROUP Co.,Ltd. |
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