CN202170260U - Iron-carbon micro-electrolysis device - Google Patents

Iron-carbon micro-electrolysis device Download PDF

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Publication number
CN202170260U
CN202170260U CN2011202873146U CN201120287314U CN202170260U CN 202170260 U CN202170260 U CN 202170260U CN 2011202873146 U CN2011202873146 U CN 2011202873146U CN 201120287314 U CN201120287314 U CN 201120287314U CN 202170260 U CN202170260 U CN 202170260U
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CN
China
Prior art keywords
housing
area
iron
aeration
carbon micro
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Expired - Lifetime
Application number
CN2011202873146U
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Chinese (zh)
Inventor
周伟
周岳荣
王雅静
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JIANGSU LINGE PURE WATER EQUIPMENT CO Ltd
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JIANGSU LINGE PURE WATER EQUIPMENT CO Ltd
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Priority to CN2011202873146U priority Critical patent/CN202170260U/en
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Publication of CN202170260U publication Critical patent/CN202170260U/en
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Abstract

An iron-carbon micro-electrolysis device comprises a casing, a water inlet on the casing, and a water outlet on the casing; the area, which is connected with the water inlet, in the casing is a water inlet area; the area, which is connected with the water inlet area, at the lower part in the casing is an aeration area; the area, which is positioned above the aeration area, at the middle in the casing is a filler area; the area, which is positioned above the filler area, at the upper part in the casing is a water outlet area; the water inlet area, the filler area and the water outlet area are separated by baffle plates; aeration tubes are arranged in the aeration area; iron scrap filter layers and carbon filter layers are alternately filled in the filler area in sequence. The iron-carbon micro-electrolysis device has the advantages of reasonable structure, high treatment efficiency and long service life.

Description

Iron carbon micro electrolyser
Technical field
The utility model relates to the environmental protection equipment field, relates in particular to a kind of unpowered iron charcoal micro-electrolytic water treatment unit.
Background technology
Coating process utilization in car surface is handled is extremely extensive; Basically all there is waste water to produce in process of production; The pollutent composition is complicated in the waste water, contains multiple toxic substance, and concentration is high; Biodegradability is poor, thereby the processing of painting dressing automobiles waste water has become a great problem of current sewage treatment project.
Micro-electrolysis method is claimed internal electrolysis, iron charcoal method, corrosion cell method, iron dust filtration method, zeroth order iron processes etc. again, is to utilize iron and charcoal in the iron filings to form galvanic cell, realizes the degraded of water pollutant.Because applied widely, advantages such as treatment effect good, shelf life is long, with low cost and convenient operating maintenance that this method has, and use waste iron filing etc. to be raw material, also do not need the consumes electric power resource, have the significance of the treatment of wastes with processes of wastes against one another.
Micro electrolysis tech is realized the chain rupture of larger molecular organics in the waste water and the reduction of oxidizing substance based on the redox reaction being main associated treatment effect, to change the character of organic pollutant in the waste water, reaches the purpose of handling waste water.Use it for during high concentrated organic wastewater such as painting dressing automobiles handles; Can realize the direct oxidation organic pollutant molecule; Make the organic macromolecule generation chain-scission degradation in the waste water; Thereby eliminated the bio-toxicity of tensio-active agent in the waste water, improved biodegradability, can be follow-up biochemical processing process favourable condition is provided.
But existing little electrolytic processing apparatus exposes some problems in operational process: one, passivation phenomenon: when utilizing micro-electrolysis method to carry out wastewater treatment; Can form one deck passive film on filler (often being the simple mixtures of iron filings and coke powder) surface; Blocked contacting of hazardous and noxious substances in the water and filler, thus influential to treatment effect.Two, iron filings harden and the bed of packings channel: when utilizing micro-electrolysis method to carry out wastewater treatment, packing layer can occur and harden into an integral body, thereby channeling occur; Have a strong impact on treatment effect; And when little electrolysis tower is too high,, lump more easily because the filling compaction effect of bottom is excessive.Though fluidized-bed has solved agglomeration problems, in order to ensure fluidized, filler needs constantly circulation, and power consumption is bigger, and filler runs off easily.Three, filler replenishes and changes: the filler of micro-electrolysis device employing at present mainly is an iron carbon granule shape mixed fillers; Though the specific surface area of this filler is big; But after being to use for some time, becoming iron mud after iron filings are corroded fully need remove, and charcoal can also continue to utilize; Iron charcoal blended filler is difficult for iron mud and charcoal are separated, and has wasted a large amount of charcoals.
The utility model content
To the problems referred to above that prior art exists, the utility model provides a kind of iron carbon micro electrolyser, and the layering of employing iron charcoal filtrate is arranged alternately, the design of bottom aeration, has solved problems such as filtering layer hardens basically.The utility model is rational in infrastructure, and processing efficiency is high, long service life.
The technical scheme of the utility model is following:
Iron carbon micro electrolyser; Comprise the water-in on housing, the housing, the water outlet on the housing; The zone that is connected with water-in in the housing is an inhalant region; The zone of bottom connection inhalant region is the aeration zone in the housing, and the zone that the interior middle part of housing is positioned at the top, aeration zone is the packing area, and the housing high inside is an exhalant region in the zone of top, packing area; Separated by baffle plate between said inhalant region and packing area, the exhalant region, said aeration zone is provided with aeration tube, and said packing area is range upon range of and successively staggered filling of iron filings filtering layer and charcoal filtering layer.
The top of said housing is an enclosed construction, and the top of said housing is provided with inlet mouth, venting port and filler filler.Said inlet mouth is connected with the aeration tube of aeration zone through pipeline.Bottom, said packing area is provided with the filtrate back up pad and is overlying on the filter screen of filtrate back up pad top, and said aeration tube passes said filtrate back up pad and filter screen inserts the bottom, packing area.Be provided with the water outlet weir notch near the water outlet place on the said housing.The junction of said exhalant region and water outlet weir notch is provided with the filtrate baffle plate.The bottom of said housing is provided with the emptying shore pipe.
The aeration GWR is 6 ~ 12:1.The waste water pH value that gets into said water-in is 3 ~ 4.
The utility model beneficial technical effects is:
1, to adopt waste iron filing and charcoal be packing layer to the utility model, can make the organic macromolecule generation chain-scission degradation in the waste water, eliminated the bio-toxicity of pollutents such as tensio-active agent in the waste water.
2, at nascent state Fe (OH) 2And Fe (OH) 3The adsorption coprecipitation effect under, pollutents such as the heavy metal ion in the waste water have obtained deposition and have removed.
3, the utility model adopts the bottom aeration mode, has the following advantages: one, for the Fenton reaction takes place oxygen is provided; Two, microbubble gets in the slit of filtrate, makes to have hole between the filtrate all the time, thereby is difficult for hardening; Three, microbubble constantly shakes around filtrate and breaks, and makes filtrate be in a kind of state of microseismic activity, and its surface is difficult for precipitating into passivation layer.The utility model adopts aerating apparatus, has prolonged the duration of service of iron charcoal filtering layer, has improved processing efficiency.
4, the utility model adopts the successively staggered of iron filings filtering layer and charcoal filtering layer to fill; When changing filler; Iron filings filtering layer and charcoal filtering layer can be distinguished replacing successively, and iron mud waste material and charcoal do not mix, and charcoal can also take out separately to fill once more and utilize; Save raw material greatly, reduced the cost of wastewater treatment.
5, waste iron filing and charcoal are used to handle the high concentrated organic wastewater of complicated components such as painting dressing automobiles as packing layer, meet the requirement of environment protecting and power-saving.
Description of drawings
Fig. 1 is for cuing open figure in this iron carbon micro electrolyser.
Embodiment
Below in conjunction with accompanying drawing the utility model is further specified.
As shown in Figure 1, this iron carbon micro electrolyser comprises housing 8, and the upper wall right side that water-in 7, housing 8 are set in the upper wall left side of housing 8 sets out the mouth of a river 14, and water outlet 14 front ends set out mill weir groove 13.
The inside left of housing 8 is an inhalant region 9 near the zone of water-in 7; The part of bottom connection inhalant region 9 is aeration zone 20 in the housing 8; What the middle part was positioned at 20 tops, aeration zone in the housing 8 is packing area 15,16; Housing 8 high insides 15,16 tops in the packing area be exhalant region 3, wherein inhalant region 9 and packing area 15, between 16, separate by baffle plate 22 respectively between inhalant region 9 and the exhalant region 3.
The top 2 of housing 8 is an enclosed construction, and top 2 is provided with inlet mouth 1, and inlet mouth 1 is connected with the aeration tube of aeration zone 20 through pipeline, and the aeration tube of aeration zone 20 is divided into the aeration person in charge 18 and aeration arm 19.The bottom of packing area 15,16 is disposed with filtrate bracing frame 12, filtrate back up pad 11 and filter screen 10 from bottom to up.Aeration arm 19 passes the bottom of filtrate bracing frame 12, filtrate back up pad 11 and filter screen 10 feeding packing areas 15,16.
Packing area 15,16 is range upon range of and successively staggered filling of iron filings filtering layer and charcoal filtering layer, the iron filings filtering layer that constitutes of the wood shavings iron filings that get off for lathe turning of packing area 15 wherein, and packing area 16 is the bamboo charcoal filtering layer of 5 ~ 50mm bamboo charcoal formation for particle size.The thickness of each layer iron filings filtering layer is 250mm, and the thickness of each layer bamboo charcoal filtering layer also is 250mm, and after filling finished, the thickness of total filtering layer was 2500mm.Exhalant region 3 is provided with filtrate baffle plate 6 with the junction of water outlet weir notch 13, and filtrate is rushed out water outlet 14 in the time of can preventing water outlet.
The top 2 of housing 8 is provided with venting port 5, is used to prevent the inner high pressure that forms of this iron carbon micro electrolyser, thereby hinders aeration and microelectrolysis process.The top 2 of housing 8 is provided with filler filler 4, is used to change filtrate.The bottom of housing 8 is provided with emptying shore pipe 21, when changing filtrate, opens this hole, can the interior useless filtrate of this device of emptying.17 is manhole among Fig. 1, is used to observe the situation in this device.
The pH value that gets into the waste water of iron carbon micro electrolyser is adjusted to 3.5, and waste water was the middle stop of iron carbon micro electrolyser 3 hours, and the aeration GWR is 8:1.
The working process of this iron carbon micro electrolyser is following:
The painting dressing automobiles waste water that needs to handle gets into housing 8 inner chambers from water-in 7, flows into the aeration zone 20 of housing 8 lower floors downwards along inhalant region 9 and baffle plate 22, from bottom to top passes packing area 15,16 again; Air is from inlet mouth 1 entering aeration zone 20, through aeration arm 19 feeding packing areas 15,16.The air that iron filings filtering layer and bamboo charcoal filtering layer and aeration dissolve in constitutes air metal microbattery, handles with air metal microcell waste water then, and its concrete reaction equation is following:
Anodic reaction (iron filings):
Fe-2e?=?Fe 2+
Cathodic reaction (charcoal):
O 2+2H ++2e?=?H 2O ?2
Total reaction:
Fe+O 2+2H +?=?Fe 2++?H 2O 2
Further reaction:
Fe 2++ H 2O 2=OH+OH -+ Fe 3+(Fenton reaction)
·OH+?Fe 2+?=?Fe 3++OH -
3Fe 2++1/2O 2+3H 2O?=?FeO·Fe 2O 3↓+6H +
Fe 3++3OH -?=?Fe(OH) 3
Fe 2++2OH -?=?Fe(OH) 2
According to above-mentioned reaction equation, its reaction principle of handling pollutent in the waste water is:
At first, the H that on negative electrode, generates of electrode reaction 2O 2, the Fe that on anode, generates 2+The H that generates 2O 2And Fe 2+The Fenton reaction further takes place in solution, and generation has the extremely strong hydroxyl radical free radical OH of high oxidizing potential (2.8V) oxidation capacity.Although hydroxyl radical free radical OH lifetime is extremely short (less than 10 -4Second), but its oxidative degradation organic pollutant consumingly reduces the COD and the colourity of waste water rapidly.
The second, the Fe (OH) of generation nascent state in the reaction process 2And Fe (OH) 3Generally all have positive charge, have extremely strong surfactivity and adsorptive power, can adsorb effectively, parcel and co-precipitation be by all contaminations of hydroxyl radical free radical OH oxidative degradation, thus COD and the colourity that can further remove waste water.
After waste water is handled via air metal microbattery, arrive the top exhalant region 3 of housing 8,, discharge by water outlet 14 through filtrate baffle plate 6 and water outlet weir notch 13; Waste gas is discharged via venting port 5.
Water-quality guideline before and after this iron carbon micro electrolyser is handled is seen shown in the table 1.
Table 1
Can find out that from table through after this apparatus processes, the pH value of water rises, COD has descended 49%, Zn 2+And PO 4-Content descended 98% and 97% respectively.
Because iron, carbon filling material layer are under the operation of acidic conditions, iron filings progressively consume, and major part becomes useless iron mud when iron filings are depleted to a certain degree, and the waste water treatment efficiency of this device can significantly descend, and promptly need change iron, charcoal filtrate this moment.During replacing, iron mud and bamboo charcoal layering in the handle assembly are all taken out, and iron mud is passed into disuse, and bamboo charcoal can not utilize with iron filings blended part again.After removing old filtrate, new iron filings and bamboo charcoal filtrate are inserted in layering again.
More than describing is the explanation to the utility model, is not the qualification to utility model, and under the situation of the utility model spirit, the utility model can be done any type of modification.

Claims (7)

1. an iron carbon micro electrolyser comprises the water-in on housing, the housing, the water outlet on the housing, it is characterized in that:
The zone that is connected with water-in in the housing is an inhalant region, and the zone of bottom connection inhalant region is the aeration zone in the housing, and the zone that the interior middle part of housing is positioned at the top, aeration zone is the packing area, and the housing high inside is an exhalant region in the zone of top, packing area;
Separated by baffle plate between said inhalant region and packing area, the exhalant region, said aeration zone is provided with aeration tube, and said packing area is range upon range of and successively staggered filling of iron filings filtering layer and charcoal filtering layer.
2. iron carbon micro electrolyser according to claim 1, the top that it is characterized in that said housing is an enclosed construction, the top of said housing is provided with inlet mouth, venting port and filler filler.
3. iron carbon micro electrolyser according to claim 2 is characterized in that said inlet mouth is connected with the aeration tube of aeration zone through pipeline.
4. iron carbon micro electrolyser according to claim 1 is characterized in that bottom, said packing area is provided with the filtrate back up pad and is overlying on the filter screen of filtrate back up pad top, and said aeration tube passes said filtrate back up pad and filter screen inserts the bottom, packing area.
5. iron carbon micro electrolyser according to claim 1 is characterized in that being provided with the water outlet weir notch near the water outlet place on the said housing.
6. according to claim 1 or 5 described iron carbon micro electrolysers, it is characterized in that the junction of said exhalant region and water outlet weir notch is provided with the filtrate baffle plate.
7. iron carbon micro electrolyser according to claim 1 is characterized in that the bottom of said housing is provided with the emptying shore pipe.
CN2011202873146U 2011-08-09 2011-08-09 Iron-carbon micro-electrolysis device Expired - Lifetime CN202170260U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011202873146U CN202170260U (en) 2011-08-09 2011-08-09 Iron-carbon micro-electrolysis device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011202873146U CN202170260U (en) 2011-08-09 2011-08-09 Iron-carbon micro-electrolysis device

Publications (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102295328A (en) * 2011-08-09 2011-12-28 江苏林格纯水设备有限公司 Iron-carbon micro-electrolysis apparatus
CN105417641A (en) * 2016-01-08 2016-03-23 张建平 Efficient bin type micro-electrolysis generator and waste water treatment process thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102295328A (en) * 2011-08-09 2011-12-28 江苏林格纯水设备有限公司 Iron-carbon micro-electrolysis apparatus
CN105417641A (en) * 2016-01-08 2016-03-23 张建平 Efficient bin type micro-electrolysis generator and waste water treatment process thereof

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Granted publication date: 20120321

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