CN101671068B - Method for iron internal electrolysis treatment of hard-degradation organic wastewater strengthened by magnetic catalyst and used fillings thereof - Google Patents
Method for iron internal electrolysis treatment of hard-degradation organic wastewater strengthened by magnetic catalyst and used fillings thereof Download PDFInfo
- Publication number
- CN101671068B CN101671068B CN2009103049112A CN200910304911A CN101671068B CN 101671068 B CN101671068 B CN 101671068B CN 2009103049112 A CN2009103049112 A CN 2009103049112A CN 200910304911 A CN200910304911 A CN 200910304911A CN 101671068 B CN101671068 B CN 101671068B
- Authority
- CN
- China
- Prior art keywords
- powdery
- copper
- salt
- filler
- add
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The invention discloses a method for iron internal electrolysis treatment of hard-degradation organic wastewater in strengthened by magnetic catalyst and used fillings thereof, relating to the technical field of treatment methods of hard-degradation organic wastewater. The method comprises the following steps: a. preparing powdery copperized magnetic particles; b. introducing wastewater with the pH value being adjusted to 3 to 5 into a magnetic catalyst iron internal electrolysis bath in which mixed fillings of powdery copperized magnetic particles and scrap iron at the weight ratio of 1:6 to 10, and completely stirring the fillings by controlling the amount of aeration; and c. fast separating solid from liquid in the treated wastewater with electromagnet. The method has the advantages of low cost required, stable operating effect and high treating efficiency. Compared with the conventional method for internal electrolysis treatment of hard-degradation organic wastewater, the speed is improved by 4 to 5 times, and the COD removing ratio in the same condition is increased by 40% to 50%.
Description
Technical field
The present invention relates to the organic industrial sewage treatment process of difficult degradation, and the preparation method of employed filler and filler in the treating processes.
Background technology
It is one of main Environmental Problems of facing of our times that water pollutes.Trade effluent is the primary pollution source of water environment pollution, and trade effluent is based on organic wastewater with difficult degradation thereby, and particularly along with the developing rapidly of chemical industry, the source of pollution of organic waste water are increasing.Organic waste water COD height, BOD is low, and often contains aromatics, heterogeneous ring compound, sulfide, toxic substances such as nitride.Thereby organic waste water environmental pollution degree is big, administers to purify the difficulty height.
To the processing of organic wastewater with difficult degradation thereby, method commonly used mainly comprises solvent extration, coagulant sedimentation, and biochemical treatment process, active carbon adsorption, chemical oxidization method, electrochemical oxidation process, light help Fenton method, ultrasonic method etc.Yet aforesaid method exists processing costs high or handle problems such as the ability of organic pollutant is more weak.
By contrast, internal electrolysis is simple because of technology, and is easy to operate, and can be widely used in handling characteristics such as multiple organic waste water and be subjected to extensive attention, becomes the focus of waste water treatment research in recent years.This method utilizes iron filings to form the filter tank as filtrate, and a series of electrochemistry take place during through the filter tank waste water and physical-chemical reaction makes pollutent obtain handling.Its principle of work is that the carbon in iron and the iron filings constitutes countless small galvanic cells in the aqueous solution, and its electrode reaction generates has high chemically active nascent state [H] and Fe
2+, with various ingredients generation redoxomorphism in the waste water, making the organic polymer material decomposition is small-molecule substance, makes hard-degraded substance change easy degradation material into.The nascent state Fe that generates in the electrode process
2+The Fe that further is oxidized to
3+, in pH＞4.0 o'clock, generate colloid flocculation agent Fe (OH)
3, can further adsorb pollutants in waste water, and flocculation sediment gets off, waste water is purified.
The major advantage of above-mentioned conventional internal electrolysis has: 1. processing costs is cheap; 2. equipment manufacturing cost is low, simple and safe operation; 3. applied widely.But there are some limitations in internal electrolysis: after 1. moving for some time, iron filings easily lump, and treatment effect descends significantly; 2. to the treatment effect instability of high concentration hard-degraded organic waste water; 3. filler easily runs off during draining.In order to solve the easily problem of caking of iron filings, adopt the mode of mechanical agitation to handle waste water, stir iron filings and make its phase mutual friction, the iron filings surface is brought in constant renewal in, also play the effect of contact position between the continuous transformation iron filings, kept reactive behavior.Yet because iron filings and carbon granules, coke ratio heavy phase difference is bigger, is prone to demixing phenomenon in the agitation, and iron carbon can not fully be contacted, and has reduced the quantity of small galvanic cell, and processing efficiency reduces.
The catalyzed internal electrocatalysis method is to grow up on the basis of internal electrolysis, report is all arranged in patent cn02111901 and cn200510029765, its principle of work is the anode of iron as interior electrolysis galvanic cell, and copper replaces carbon to carry out series reaction to handle waste water as the negative electrode of galvanic cell.Owing to adopt copper as negative electrode, widened the potential difference between the anode and cathode in the galvanic cell, improved processing power to pollutent.Yet patent Cn02111901 and cn200510029765 be in order to make full use of the reductive action of iron, is to carry out under the situation of aeration not, avoids iron by molecular oxygen oxidation.In fact, in these two kinds of methods to the treatment effect of waste water except reduction reaction and interior electrolytic reaction, also have the flocculation sediment effect of ferrous ion and iron ion, can make more pollutent obtain removing.But this effect on the one hand only just can be strengthened and be utilized under the situation of aeration.In addition, more than two patents all wastewater pH is not regulated, but Fe
2+And Fe
3+Under neutrallty condition, just can produce precipitation, the Fe of generation (OH)
2And Fe (OH)
3Colloid has very strong adsorptive power, suspended matter in the waste water and colloid can be attached on the iron filter material surface.If waste water is alkalescence, will aggravate the generation of iron filter material surface scale formation, seriously hinder the carrying out of catalyzed internal electrocatalysis reaction, thereby influence is to the treatment effect of waste water.Patent cn200610033191 discloses the method that a kind of powdered iron carbon microelectrode is handled waste water, has increased the quantity of galvanic cell in the unit volume, has improved wastewater treatment speed.Yet,, easily run off during draining because the particle diameter of iron powder and carbon dust is too little.
In sum, though existing the whole bag of tricks has been obtained certain progress aspect the electrolysis treatment waste water in solving iron carbon, there is not thoroughly to solve the limitation of internal electrolysis.Thereby to research and develop effective novel method be very significant.
Summary of the invention
It is low to the purpose of this invention is to provide a kind of cost, and the processing efficiency height improves wastewater treatment speed, and filler is difficult for the organic wastewater with difficult degradation thereby treatment process of loss.
Another order of the present invention also is to provide a kind of good stability, and is active strong, the filler of the processing organic wastewater with difficult degradation thereby that efficient is high, and preparation method thereof.
At the technical problem that exists in the prior art scheme, and in order to realize purpose of the present invention effectively, the present invention is with the anode of iron filings as interior electrolysis galvanic cell, to have the negative electrode of magneticattraction and magnetic copper facing magnetic iron oxide separatory composite particles as galvanic cell, the magneticattraction of copperized magnetic particles energy is in the iron filings surface, reduce the resistance of contact anode and cathode, promoted electrochemical reaction, improved the removal efficient of hardly degraded organic substance.The ferrite of copperized magnetic particles has quickened mass transfer process to the organic pollutant adsorption inrichment, has further improved treatment effect.
Internal electrolysis of iron of the present invention is handled the filler that organic wastewater with difficult degradation thereby uses, and is to be 1: 6～10 to mix by composite particles and iron filings by mass ratio, and described composite particles is the copper-plated magnetic iron oxide of powdery.
The preferred composition quality ratio of described powdery copper facing magnetic iron oxide composite particles is: nucleation material 30～35%, ferriferous oxide 30～40%, copper 30～40%.
The nucleation material is a porous material, as gac, and zeolite etc.The iron filings granular size is 3～6mm, and described nucleation material is a powdery, and size is 100～200 orders.
The preparation method of filler of the present invention can prepare in the following manner: with Fe
2+Salt and Fe
3+Salt is raw material, is made into mol ratio to be
Fe
2+: Fe
3+=1: the solution of 0.9-1.2, add powdery nucleation material, fully stir, heated solution to 60～80 ℃, add alkali lye to pH=12～13 under continuing to stir, place still aging 3～4 hours of 95～100 ℃ of water-baths then, to neutral, carry out solid-liquid separation with filter method or magnetic separation means with the deionized water wash product, 3～4 hour after add in copper salt solution 130～160 ℃ of dryings above-mentioned gained solid again, fully stir, water-bath to 30～50 ℃ are stirred fast and are added reductive agent down, stirred 30～60 minutes, be washed till neutrality with deionized water, dry, promptly make.
Fe described in the preparation method of filler
2+, Fe
3+Salt is preferably vitriol or hydrochloride, and described alkali lye is preferably sodium hydroxide, potassium hydroxide solution.
Described copper salt solution preferably consists of Seignette salt 80～100g/L, yellow soda ash 15～30g/L, copper sulfate 10～20g/L, sodium hydroxide 25～35g/L.
Among the preparation method of described filler, described reductive agent is preferably formaldehyde, and its concentration in copper salt solution is 8～12g/L;
The size of described powdery nucleation material is preferably 100～200 orders, because particle diameter is little, and ferriferous oxide and copper facing difficult drop-off, the copperized magnetic particles particle diameter is little, and specific surface area is big, has increased the contact area of corrosion galvanic cell anode and cathode.
Magnetic catalyst of the present invention is strengthened down, and the method steps of internal electrolysis of iron processing organic wastewater with difficult degradation thereby comprises: placement powdery composite particles and iron filings mass ratio are 1: 6～10 mixed fillers in the interior electrolyzer, and described composite particles is copper facing magnetic iron oxide (being magnetic catalyst); Organic waste water enters interior electrolyzer after transferring pH to 3～5, and the control by aeration rate is fully stirred filler; Treated waste water carries out solid-liquid separation rapidly under the effect of electro-magnet.
The residence time of organic waste water in interior electrolyzer is 3～5 hours in the described method.
Described method adopts the mode aeration of bubbling air at the bottom of the interior electrolyzer, and regulates aeration rate with abundant stirring filler.
The mode aeration of employing bubbling air at the bottom of the pond can be according to wastewater flow rate and property adjustments aeration rate thereof with abundant stirring filler.
Advantage of the present invention is as follows:
Because the present invention has used magnetic particle, has increased the contact tightness degree of copperized magnetic particles with iron filings by the magneticattraction iron filings, improved the electric conductivity of contact anode and cathode, strengthened the iron chip corrosion reaction.And used the metallic copper of a katalysis, and enlarged the potential difference between the anode and cathode in the corrosion galvanic cell, improved processing power to pollutent.
Mass transfer process has been quickened in the adsorption and enrichment effect of magnetic ferrite, has improved the transfer efficiency of electronics in the redox reaction process, has shortened the reaction times.
The powdery copperized magnetic particles that the present invention uses is because specific surface area is big, and particle diameter is even, has increased the galvanic cell quantity on iron filings surfaces.Not only improve interior electrolytic reaction speed, also reduced the consumption that reacts required filler, reduced the reaction tank volume, saved working cost.
Owing to adopt from the mode of reaction tank bottom bubbling air, the cathode oxidation current potential is raise, help the carrying out of galvanic cell reaction, and fully stirred filler, increase the mass transfer area of filler, avoided the iron filings caking to harden electrolytic stability in having strengthened.
Utilize the sucking action of electro-magnet, not only can carry out solid-liquid separation rapidly, improve processing efficiency, and reduced the electrode loss that water outlet causes iron filings and copperized magnetic particles.
The present invention has improved 4～5 times than the speed of electrolysis treatment organic wastewater with difficult degradation thereby in conventional, and under equal conditions the COD clearance improves 40～50%.
Description of drawings
Fig. 1 is the comparison diagram that different interior electrolysis techs are handled the waste water effect.Wherein transverse axis is the reaction times, unit: h; The longitudinal axis is the COD clearance, unit: %;-zero-representative has added the interior electrolysis COD clearance of simple iron filings, and--representative has added the interior electrolysis COD clearance of powdered carbon and iron filings, and-△-representative has added the interior electrolysis COD clearance of powdery copperized magnetic particles.
Embodiment
Following examples are intended to illustrate the present invention rather than limitation of the invention further.
Embodiment 1
With iron protochloride and iron(ic) chloride is raw material, and being made into mol ratio is Fe
2+: Fe
3+=1: 1 solution, add 100 purpose powdery nucleation materials, fully stir, heated solution to 60 ℃, hydro-oxidation sodium is to PH=12 under continuing to stir, place still aging 4 hours of 95 ℃ of water-baths, extremely neutral with the deionized water wash product, after magnetic separates, 130 ℃ of dryings 4 hours, add Seignette salt 80g/L, yellow soda ash 15g/L, copper sulfate 10g/L, in the copper salt solution of sodium hydroxide 25g/L, fully stir, water-bath to 35 ℃ stirs fast that to add formaldehyde to its concentration in mantoquita down be 8g/L, stirred 40 minutes, be washed till neutrality with deionized water, dry, make copperized magnetic particles.Is to weigh up at 1: 10 the copperized magnetic particles and the iron filings of preparation with mass ratio, in air flow quantity (is aeration rate, as follows) be 20L/min, reaction times is under the condition of 2h, to the COD of pH=5 is that the tropeolin-D waste water of 869mg/L is handled, water outlet COD is 154mg/L, and the COD clearance is 82.3%.
Embodiment 2
With ferrous sulfate and ferric sulfate is raw material, and being made into mol ratio is Fe
2+: Fe
3+=1: 1 solution, add 200 purpose powdery nucleation materials, fully stir, heated solution to 80 ℃, hydro-oxidation sodium is to pH=13 under continuing to stir, place still aging 3 hours of 100 ℃ of water-baths, extremely neutral with the deionized water wash product, after magnetic separates, 160 ℃ of dryings 3 hours, add Seignette salt 100g/L, yellow soda ash 30g/L, copper sulfate 20g/L, in the copper salt solution of sodium hydroxide 35g/L, fully stir, water-bath to 45 ℃ stirs fast that to add formaldehyde to its concentration in mantoquita down be 12g/L, stirred 30 minutes, be washed till neutrality with deionized water, dry, make copperized magnetic particles.Is to weigh up at 1: 6 the copperized magnetic particles and the iron filings of preparation with mass ratio, in air flow quantity is 15L/min, and the reaction times is under the condition of 3h, is that the p-NP waste water of 1340mg/L is handled to the COD of pH=3, water outlet COD is 190mg/L, and the COD clearance is 85.8%.
Embodiment 3
With iron protochloride and ferric sulfate is raw material, and being made into mol ratio is Fe
2+: Fe
3+=1: 1 solution, add 100 purpose powdery nucleation materials, fully stir, heated solution to 70 ℃, hydro-oxidation potassium is to pH=12 under continuing to stir, place still aging 3 hours of 98 ℃ of water-baths, extremely neutral with the deionized water wash product, after magnetic separates, 150 ℃ of dryings 4 hours, add Seignette salt 90g/L, yellow soda ash 20g/L, copper sulfate 15g/L, in the copper salt solution of sodium hydroxide 30g/L, fully stir, water-bath to 40 ℃ stirs fast that to add formaldehyde to its concentration in mantoquita down be 10g/L, stirred 50 minutes, be washed till neutrality with deionized water, dry, make copperized magnetic particles.Is to weigh up at 1: 7 the copperized magnetic particles and the iron filings of preparation with mass ratio, in air flow quantity is 20L/min, and the reaction times is under the condition of 3h, is that the dyeing waste water of 1210mg/L is handled to the COD of pH=4, water outlet COD is 232mg/L, and the COD clearance is 80.8%.
Embodiment 4
With ferrous sulfate and iron(ic) chloride is raw material, and being made into mol ratio is Fe
2+: Fe
3+=1: 1 solution, add 200 purpose powdery nucleation materials, fully stir, heated solution to 70 ℃, hydro-oxidation potassium is to pH=13 under continuing to stir, place still aging 3 hours of 100 ℃ of water-baths, extremely neutral with the deionized water wash product, after magnetic separates, 140 ℃ of dryings 4 hours, add Seignette salt 100g/L, yellow soda ash 25g/L, copper sulfate 15g/L, in the copper salt solution of sodium hydroxide 30g/L, fully stir, water-bath to 45 ℃ stirs fast that to add formaldehyde to its concentration in mantoquita down be 10g/L, stirred 30 minutes, be washed till neutrality with deionized water, dry, make copperized magnetic particles.Is to weigh up at 1: 8 the copperized magnetic particles and the iron filings of preparation with mass ratio, is 25L/min in air flow quantity, and the reaction times is under the condition of 3.5h, is that the dyeing waste water of 26349mg/L is handled to the COD of pH=3.And under the same conditions, with electrolysis in the simple iron filings that do not add gac and add that electrolytic treatment effect compares in the iron carbon of Powdered Activated Carbon.The result as shown in Figure 1, visible treatment effect of the present invention has had very big improvement than electrolysis in the tradition.
Claims (8)
1. internal electrolysis of iron is handled the filler that organic wastewater with difficult degradation thereby uses, and it is characterized in that, described filler is 1: 6～10 to mix by composite particles and iron filings by mass ratio, and described composite particles is a powdery copper facing magnetic iron oxide; The composition quality ratio of described powdery copper facing magnetic iron oxide is: nucleation material 30～35%, ferriferous oxide 30～40%, copper 30～40%; Described filler prepares in the following manner: with Fe
2+Salt and Fe
3+Salt is raw material, and being made into mol ratio is Fe
2+: Fe
3+=1: the solution of 0.9-1.2, add powdery nucleation material, fully stir, heated solution to 60～80 ℃, add alkali lye to pH=12～13 under continuing to stir, place still aging 3～4 hours of 95～100 ℃ of water-baths then, to neutral, carry out solid-liquid separation by filtration or magnetic separation means with the deionized water wash product, 3～4 hour after add in copper salt solution 130～160 ℃ of dryings above-mentioned gained solid again, fully stir, water-bath to 30～50 ℃ are stirred fast and are added reductive agent down, stirred 30～60 minutes, be washed till neutrality with deionized water, dry, promptly make; Described copper salt solution consists of Seignette salt 80～100g/L, yellow soda ash 15～30g/L, copper sulfate 10～20g/L, sodium hydroxide 25～35g/L; Described reductive agent is a formaldehyde.
2. filler according to claim 1 is characterized in that, the nucleation material is a porous material; The iron filings granular size is 3～6mm, and described nucleation material is a powdery, and size is 100～200 orders.
3. prepare the method for the described filler of claim 1, it is characterized in that, with Fe
2+Salt and Fe
3+Salt is raw material, and being made into mol ratio is Fe
2+: Fe
3+=1: the solution of 0.9-1.2, add powdery nucleation material, fully stir, heated solution to 60～80 ℃, add alkali lye to pH=12～13 under continuing to stir, place still aging 3～4 hours of 95～100 ℃ of water-baths then, to neutral, carry out solid-liquid separation by filtration or magnetic separation means with the deionized water wash product, 3～4 hour after add in copper salt solution 130～160 ℃ of dryings above-mentioned gained solid again, fully stir, water-bath to 30～50 ℃ are stirred fast and are added reductive agent down, stirred 30～60 minutes, be washed till neutrality with deionized water, dry, promptly make; Described copper salt solution consists of Seignette salt 80～100g/L, yellow soda ash 15～30g/L, copper sulfate 10～20g/L, sodium hydroxide 25～35g/L; Described reductive agent is a formaldehyde.
4. the preparation method of filler according to claim 3 is characterized in that, described Fe
2+, Fe
3+Salt is vitriol or hydrochloride, and described alkali lye is sodium hydroxide or potassium hydroxide solution.
5. the preparation method of filler according to claim 3,, it is characterized in that described reductive agent is a formaldehyde, its concentration in copper salt solution is 8～12g/L; The size of described powdery nucleation material is 100～200 orders.
6. magnetic catalyst is strengthened the method for internal electrolysis of iron processing organic wastewater with difficult degradation thereby down, it is characterized in that placement powdery composite particles and iron filings mass ratio are 1: 6～10 mixed fillers in the interior electrolyzer, and described composite particles is a powdery copper facing magnetic iron oxide; Organic waste water enters interior electrolyzer after transferring pH to 3～5, and the control by aeration rate is fully stirred filler; Treated waste water carries out solid-liquid separation rapidly under the effect of electro-magnet; The composition quality ratio of described powdery copper facing magnetic iron oxide is: nucleation material 30～35%, ferriferous oxide 30～40%, copper 30～40%; Described filler prepares in the following manner: with Fe
2+Salt and Fe
3+Salt is raw material, and being made into mol ratio is Fe
2+: Fe
3+=1: the solution of 0.9-1.2, add powdery nucleation material, fully stir, heated solution to 60～80 ℃, add alkali lye to pH=12～13 under continuing to stir, place still aging 3～4 hours of 95～100 ℃ of water-baths then, to neutral, carry out solid-liquid separation by filtration or magnetic separation means with the deionized water wash product, 3～4 hour after add in copper salt solution 130～160 ℃ of dryings above-mentioned gained solid again, fully stir, water-bath to 30～50 ℃ are stirred fast and are added reductive agent down, stirred 30～60 minutes, be washed till neutrality with deionized water, dry, promptly make; Described copper salt solution consists of Seignette salt 80～100g/L, yellow soda ash 15～30g/L, copper sulfate 10～20g/L, sodium hydroxide 25～35g/L; Described reductive agent is a formaldehyde.
7. method according to claim 6 is characterized in that, the residence time of described organic waste water in interior electrolyzer is 3～5 hours.
8. method according to claim 6 is characterized in that, adopts the mode aeration of bubbling air at the bottom of the interior electrolyzer, and regulates aeration rate with abundant stirring filler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103049112A CN101671068B (en) | 2009-07-28 | 2009-07-28 | Method for iron internal electrolysis treatment of hard-degradation organic wastewater strengthened by magnetic catalyst and used fillings thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103049112A CN101671068B (en) | 2009-07-28 | 2009-07-28 | Method for iron internal electrolysis treatment of hard-degradation organic wastewater strengthened by magnetic catalyst and used fillings thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101671068A CN101671068A (en) | 2010-03-17 |
| CN101671068B true CN101671068B (en) | 2011-06-15 |
Family
ID=42018528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009103049112A Expired - Fee Related CN101671068B (en) | 2009-07-28 | 2009-07-28 | Method for iron internal electrolysis treatment of hard-degradation organic wastewater strengthened by magnetic catalyst and used fillings thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101671068B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101838034B (en) * | 2010-05-27 | 2011-07-20 | 天津大学 | High efficiency hardening resistant micro-electrolysis material and preparation method thereof |
| CN102642981B (en) * | 2012-04-17 | 2013-12-11 | 清华大学 | Denitrification dephosphorization device |
| CN107744808A (en) * | 2017-10-18 | 2018-03-02 | 中国石油化工股份有限公司 | The preparation method of class Fenton's reaction catalyst and its method for oxidation sewage treatment |
| CN112931072A (en) * | 2021-01-18 | 2021-06-11 | 湖南文理学院 | Low-carbon ecological agricultural circulating system and circulating method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3207496B2 (en) * | 1992-03-06 | 2001-09-10 | 株式会社ネオックスラボ | Bearing support structure for vehicle sun visor |
| CN1935680A (en) * | 2005-09-19 | 2007-03-28 | 上海城市污染控制工程研究中心 | Method for treating sewage by catalytic iron internal electrogravimetry and its filler |
| CN101085691A (en) * | 2006-06-07 | 2007-12-12 | 同济大学 | Method for fast reducing and removing chloride organic pollutant in water body by CEP catalytic reduction system |
| CN101085690A (en) * | 2006-06-07 | 2007-12-12 | 同济大学 | Method for reducing chlorine-containing organic substance in dechlorination treatment water by surface modified catalytic iron |
| JP4074593B2 (en) * | 2004-02-26 | 2008-04-09 | 東京エレクトロン株式会社 | Vacuum drying apparatus and vacuum drying method |
-
2009
- 2009-07-28 CN CN2009103049112A patent/CN101671068B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3207496B2 (en) * | 1992-03-06 | 2001-09-10 | 株式会社ネオックスラボ | Bearing support structure for vehicle sun visor |
| JP4074593B2 (en) * | 2004-02-26 | 2008-04-09 | 東京エレクトロン株式会社 | Vacuum drying apparatus and vacuum drying method |
| CN1935680A (en) * | 2005-09-19 | 2007-03-28 | 上海城市污染控制工程研究中心 | Method for treating sewage by catalytic iron internal electrogravimetry and its filler |
| CN101085691A (en) * | 2006-06-07 | 2007-12-12 | 同济大学 | Method for fast reducing and removing chloride organic pollutant in water body by CEP catalytic reduction system |
| CN101085690A (en) * | 2006-06-07 | 2007-12-12 | 同济大学 | Method for reducing chlorine-containing organic substance in dechlorination treatment water by surface modified catalytic iron |
Non-Patent Citations (1)
| Title |
|---|
| 胡舜钦.粉煤灰磁粉表面化学镀铜的研究.《长江大学学报（自然版）理工卷》.2007,第4卷(第3期), * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101671068A (en) | 2010-03-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104761024B (en) | Efficient heterogeneous catalytic oxidation iron-carbon micro-electrolysis filler and preparation method thereof | |
| CN101955280B (en) | Technology for processing high-concentration organic wastewater in composite electrochemical method | |
| CN103991987B (en) | A kind of pretreatment high phosphorus waste water removes technique and the process system thereof of total phosphorus | |
| CN103787537B (en) | A kind for the treatment of process of sewage and application thereof | |
| CN104163539A (en) | Processing method of wastewater in coal chemistry industry | |
| CN102701496A (en) | Method and process for treating high-concentration organic wastewater difficult to degrade | |
| CN102849824B (en) | Iron-based copper for treating organic sewage and sewage treatment method | |
| CN102923890A (en) | Method for treating pharmaceutical wastewater | |
| CN102161543A (en) | Advanced treatment method for well drilling wastewater based on compound catalytic oxidation of ozone | |
| CN101817575A (en) | Electric flocculation method and device for recovering and processing desulfurized wastewater | |
| CN101948212A (en) | Joint water treatment method for micro-electrolysis reaction and biological aerated filter | |
| CN111470679A (en) | Pretreatment method of waste emulsion | |
| CN102464440B (en) | Method for carrying out decrement on physicochemical and biochemical mixed sludge | |
| CN112607893A (en) | Plating solution wastewater treatment method for nickel plating of plated part | |
| CN107857401A (en) | A kind of percolate nanofiltration concentrate treatment combined device | |
| CN102976532A (en) | Method for treating fluorine-containing polymetallic acidic smelting wastewater by internal electrolysis and coprecipitation of ferric-carbon | |
| JP2021130106A (en) | Catalyst made of iron and carbon for promoting oxidation of hardly decomposable organic substance | |
| CN107540135A (en) | A kind of safe and efficient percolate nanofiltration concentrate processing group technology | |
| CN101671068B (en) | Method for iron internal electrolysis treatment of hard-degradation organic wastewater strengthened by magnetic catalyst and used fillings thereof | |
| CN105060411A (en) | Internal electrolysis-electric flocculation method for processing phosphor-containing wastewater | |
| CN105540946A (en) | Process for removing thallium through microelectrolysis treatment of thallium-containing heavy metal wastewater | |
| CN108101184A (en) | A kind of sewage-treating agent and preparation method thereof | |
| CN106673275A (en) | Method and device for treating biological organic wastewater containing ethylene oxide derivatives | |
| CN210764765U (en) | Novel wastewater treatment device | |
| CN111072153A (en) | Desulfurization microbial inoculum and sewage treatment technology applying same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110615 Termination date: 20120728 |