CN101486518B - Fenton-like-fluidized bed sewage processor and sewerage treating method therefor - Google Patents
Fenton-like-fluidized bed sewage processor and sewerage treating method therefor Download PDFInfo
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- CN101486518B CN101486518B CN2009100714636A CN200910071463A CN101486518B CN 101486518 B CN101486518 B CN 101486518B CN 2009100714636 A CN2009100714636 A CN 2009100714636A CN 200910071463 A CN200910071463 A CN 200910071463A CN 101486518 B CN101486518 B CN 101486518B
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- Prior art keywords
- sewage
- fenton
- fluidized bed
- reactor
- solution
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Links
- 239000010865 sewage Substances 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 230000000694 effects Effects 0.000 claims abstract description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 34
- 229910052742 iron Inorganic materials 0.000 claims description 13
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- 238000010992 reflux Methods 0.000 claims description 8
- 229910052739 hydrogen Inorganic materials 0.000 claims description 6
- 230000005587 bubbling Effects 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 12
- 239000002351 wastewater Substances 0.000 abstract description 6
- 230000015556 catabolic process Effects 0.000 abstract description 4
- 238000006731 degradation reaction Methods 0.000 abstract description 4
- 239000010802 sludge Substances 0.000 abstract description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 abstract 2
- 238000002425 crystallisation Methods 0.000 abstract 1
- 230000008025 crystallization Effects 0.000 abstract 1
- 229910001448 ferrous ion Inorganic materials 0.000 abstract 1
- 239000013049 sediment Substances 0.000 abstract 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical class CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- 239000013078 crystal Substances 0.000 description 6
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical class O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 description 6
- 239000004411 aluminium Substances 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- 239000000126 substance Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 239000002957 persistent organic pollutant Substances 0.000 description 3
- 238000005243 fluidization Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 229910002588 FeOOH Inorganic materials 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 238000012443 analytical study Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Landscapes
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention provides a Fenton-like-fluidized bed sewage treatment device and a sewage treatment method thereof, and relates to a water treatment device and a sewage treatment method thereof. The sewage treatment device and the sewage treatment method thereof solve the problems that the reaction conditions are harsh in the reaction for the degradation of organic sewage and a large amount of ferrous sludge is generated during the reaction process. The device comprises a first Fenton reactor (1), a second Fenton reactor (2), a lifting pump (7), a first circulating pump (3) and a second circulating pump (9). The method comprises the following steps: 1. the sewage is treated in the first Fenton reactor (1); 2. the effluent index is controlled; 3. the sewage is treated in the second Fenton reactor (2) and the pH value is adjusted; and 4. the effluent index and the concentration of ferrous ion in the solution are controlled. The water treatment device and the sewage treatment method thereof adopt the method of combing Fenton-like process and sediment crystallization process, the process is improved, and the activity of biological treatment is enhanced. The process is applicable for the treatment of special organic wastewater which is high in concentration and hard to be biodegraded, can not be treated by conventional process or can not obtain good treatment effect when being treated by the conventional process.
Description
Technical field
The present invention relates to a kind of method that adopts water treatment device to dispose of sewage.
Background technology
The organic waste water of high density difficult for biological degradation has become the greatest problem of contaminate environment.At present at waste water advanced processes technical elements, the class Fenton process is efficient because of having, the advantage of applied range, low process cost, be applied in this field widely, but the class Fenton process exists severe reaction conditions (must carry out) under acidic conditions in the reaction of degradation of organic substances waste water, can produce the shortcoming of a large amount of iron containing sludges in the reaction process.
Summary of the invention
The objective of the invention is to exist severe reaction conditions, can produce the problem of a large amount of iron containing sludges in the reaction process, and the method that adopts class Fenton-fluidized bed sewage processor to dispose of sewage is provided in order to solve to have now in the reaction of degradation of organic substances waste water.
Class Fenton-fluidized bed sewage processor, it mainly is made of first Fenton reactor, second Fenton reactor, lift pump, first recycle pump and second recycle pump; Be connected by lift pump between first Fenton reactor and second Fenton reactor; The first recycle pump two ends communicate with first Fenton reactor, and the second recycle pump two ends communicate with second Fenton reactor.
The method that adopts class Fenton-fluidized bed sewage processor to dispose of sewage is carried out according to the following steps: one, be 5% H with fe and mass concentration
2O
2Solution adds in the interior sewage of first Fenton reactor, and the gas velocity of pressing 1mL/min is reacted 4～5min from first Fenton reactor bottom bubbling air; Two, open the effluent index BOD that first recycle pump is regulated control of reflux ratio first Fenton reactor
5/ COD
Mn〉=0.30; Three, the first Fenton reactor water outlet is pumped in second Fenton reactor that the seed activity Al filler is housed by lift pump, adds H then
2O
2Solution, and to regulate water pH value with NaOH be 7.5～8.5; Four, open second recycle pump and regulate control of reflux ratio second Fenton reactor 2 water outlet BOD
5/ COD
Mn〉=0.50, iron concentration≤1.5mg/L, water outlet is promptly finished and is disposed of sewage; H in the step 1
2O
2H in the solution
2O
2With COD in the sewage
MnMass ratio be 0.8～1.5: 1; H
2O
2H in the solution
2O
2With the mol ratio of fe be 2.5～4: 1; H in the step 3 wherein
2O
2The add-on of solution is identical with step 1.
Class Fenton of the present invention-fluidized-bed precipitated crystal treatment process has overcome in the class Fenton process entire reaction lower owing to rate constant, has limited Fe in the reaction process
3+Return Fe
2+Reaction, make the circulation of iron ion be obstructed, reduced the degraded of organic pollutant in the waste water; Can generate Fe because of fe in the present invention
2+, while Fe
0Existence can be in time with the Fe that produces
3+Be reduced into Fe
2+, make Fe
2+Therefore working cycle is in time replenished, and will improve the concentration of OH and effective degradable organic pollutant in class Fenton of the present invention-fluidized-bed precipitated crystal method.
Fe in the present invention
3+At pH greater than will precipitated crystal more than 6, Fe in second Fenton reactor
3+Crystalline forming is because of Fe (OH)
3Crystal grain is moisture low, and the iron containing sludge amount will significantly reduce.
Description of drawings
Fig. 1 is class Fenton-fluidized bed sewage processor figure; Fig. 2 adopts the method for embodiment 17 to handle the COD and the variation diagram of BOD of waste water, among the figure COD with " " expression, BOD use "
" expression.
Embodiment
Technical solution of the present invention is not limited to following cited embodiment, also comprises the arbitrary combination between each embodiment.
Embodiment one: in conjunction with Fig. 1 present embodiment class Fenton-fluidized bed sewage processor is described, it mainly is made of first Fenton reactor 1, second Fenton reactor 2, lift pump 7, first recycle pump 3 and second recycle pump 9; Be connected by lift pump 7 between first Fenton reactor 1 and second Fenton reactor 2; First recycle pump, 3 two ends communicate with first Fenton reactor 1, and second recycle pump, 9 two ends communicate with second Fenton reactor 2.
Embodiment two: what present embodiment and embodiment one were different is in second Fenton reactor 2 seed activity aluminium to be housed, and wherein the diameter of seed activity aluminium is 2～5mm.Other step and parameter are identical with embodiment one.
Embodiment three: what present embodiment and embodiment one were different is in second Fenton reactor 2 seed activity aluminium to be housed, and wherein the diameter of seed activity aluminium is 3mm.Other step and parameter are identical with embodiment one.
Embodiment four: illustrate that in conjunction with Fig. 1 the method that present embodiment adopts class Fenton-fluidized bed sewage processor to dispose of sewage carries out according to the following steps: one, with fe and mass concentration be 5% H
2O
2Solution adds in the sewage in first Fenton reactor 1, and the gas velocity of press 1mL/min is reacted 4～5min from first Fenton reactor, 1 bottom bubbling air; Two, open the effluent index BOD that first recycle pump 3 is regulated control of reflux ratio first Fenton reactor 1
5/ COD
Mn〉=0.30; Three, 1 water outlet of first Fenton reactor is pumped in second Fenton reactor 2 that the seed activity Al filler is housed by lift pump 7, adds H then
2O
2Solution, and to regulate water pH value with NaOH be 7.5～8.5; Four, open second recycle pump 9 and regulate control of reflux ratio second Fenton reactor 2 water outlet BOD
5/ COD
Mn〉=0.50, iron concentration≤1.5mg/L, water outlet is promptly finished and is disposed of sewage; H in the step 1
2O
2H in the solution
2O
2With COD in the sewage
MnMass ratio be 0.8～1.5: 1; H
2O
2H in the solution
2O
2With the mol ratio of fe be 2.5～4: 1; H in the step 3 wherein
2O
2The add-on of solution is identical with step 1.
Class Fenton-fluidized bed sewage processor in the present embodiment, it is by the first Fenton device 1, the second Fenton device 2, first recycle pump 3, sump pump 4, air driven pump 5, H
2O
2Add pump 6, lift pump (7), rising pipe) and second recycle pump, 9 formations, it is characterized in that H
2O
2The discharge port that adds pump 6 is communicated with the opening for feed of the first Fenton device 1 and the second Fenton device, 2 bottoms respectively, the air outlet of air driven pump 5 be communicated with the first Fenton device 1 and the second Fenton device, 2 bottom air inlets respectively, the water-in of the water outlet of sump pump 4 and the first Fenton device, 1 bottom is communicated with, the water outlet on the first Fenton device, 1 top is communicated with by lift pump 7 with the water-in of the second Fenton device, 2 bottoms, the water outlet on the second Fenton device, 2 tops is communicated with the water-in of rising pipe 8, the water of the first Fenton device 1 circulates up and down at the first Fenton device 1 by recycle pump 3, the water of the second Fenton device 2 circulates up and down at the first Fenton device 2 by recycle pump 9, in the second Fenton device 2 the fluidisation carrier is housed; Wherein the fluidisation carrier is that diameter is 2～5mm seed activity aluminium.
The concentration precipitated crystal condition of control water iron ion can form hydroxyl hydrogen ferric oxide (FeOOH) crystal grain in the present embodiment step 4, because the hydroxyl hydrogen ferric oxide has good adsorption property and catalytic performance, can be used as the source of iron material, like this can be further to the oxidation removal of organic pollutant, thereby improve the ability of depolluting of total system.
Embodiment five: that present embodiment and embodiment four are different is H in the step 1
2O
2H in the solution
2O
2With COD in the sewage
MnMass ratio be 0.9～1.2: 1.Other step and parameter are identical with embodiment four.
Embodiment six: that present embodiment and embodiment four are different is H in the step 1
2O
2H in the solution
2O
2With COD in the sewage
MnMass ratio be 1: 1.Other step and parameter are identical with embodiment four.
Embodiment seven: that present embodiment is different with embodiment four or five is H in the step 1
2O
2H in the solution
2O
2With the mol ratio of fe be 3.2～3.8: 1.Other step and parameter are identical with embodiment four or five.
Embodiment eight: that present embodiment is different with embodiment four or five is H in the step 1
2O
2H in the solution
2O
2With the mol ratio of fe be 3.5: 1.Other step and parameter are identical with embodiment four or five.
Embodiment nine: present embodiment and embodiment seven are different be in the step 1 reaction times be 4.5min.Other step and parameter are identical with embodiment seven.
Embodiment ten: what present embodiment and embodiment four, five or nine were different is that effluent index is BOD in the step 2
5/ COD
Mn＞0.40.Other step and parameter are identical with embodiment four, five or nine.
Embodiment 11: what present embodiment and embodiment four, five or nine were different is that effluent index is BOD in the step 2
5/ COD
Mn=0.45.Other step and parameter are identical with embodiment four, five or nine.
Embodiment 12: present embodiment and embodiment ten are different is to be 7.8～8.2 with pH regulator in the step 3.Other step and parameter are identical with embodiment ten.
Embodiment 13: present embodiment and embodiment ten are different is to be 8.0 with pH regulator in the step 3.Other step and parameter are identical with embodiment ten.
Embodiment 14: what present embodiment and embodiment four, five, nine or 12 were different is that effluent index is BOD in the step 4
5/ COD
Mn＞0.60.Other step and parameter are identical with embodiment four, five, nine or 12.
Embodiment 15: what present embodiment and embodiment four, five, nine or 12 were different is that effluent index is BOD in the step 4
5/ COD
Mn=0.65.Other step and parameter are identical with embodiment four, five, nine or 12.
Embodiment 16: present embodiment and embodiment 14 are different is water iron concentration＜1.2mg/L in the solution in the step 4.Other step and parameter are identical with embodiment 14.
Embodiment 16: present embodiment and embodiment 14 are different is water iron concentration=1.0mg/L in the solution in the step 4.Other step and parameter are identical with embodiment 14.
Embodiment 17: illustrate that in conjunction with Fig. 1 the method that present embodiment adopts class Fenton-fluidized bed sewage processor to dispose of sewage carries out according to the following steps: one, with fe and mass concentration be 5% H
2O
2Solution adds in the sewage in first Fenton reactor 1, and the gas velocity of press 1mL/min is reacted 4.5min from first Fenton reactor, 1 bottom bubbling air; Two, open the effluent index BOD that first recycle pump 3 is regulated control of reflux ratio first Fenton reactor 1
5/ COD
Mn=0.30; Three, 1 water outlet of first Fenton reactor is pumped in second Fenton reactor 2 that the seed activity Al filler is housed by lift pump 7, adds H then
2O
2Solution, and to regulate water pH value with NaOH be 8.0; Four, open second recycle pump 9 and regulate control of reflux ratio second Fenton reactor 2 water outlet BOD
5/ COD
Mn=0.50, iron concentration=1.2mg/L, water outlet is promptly finished and is disposed of sewage; H in the step 1
2O
2H in the solution
2O
2With COD in the sewage
MnMass ratio be 1: 1; H
2O
2H in the solution
2O
2With the mol ratio of fe be 3.5: 1; H in the step 3 wherein
2O
2The add-on of solution is identical with step 1.
The processing method of present embodiment, to certain chemical plant actual production wastewater treatment, contain kind surplus the multiple organism 40 such as acetic acid, furfural and alcohols, aldehydes, ketone, ester class, organic acid through this chemical plant of gas chromatography and mass spectromentry analytical study, wherein based on acetic acid, furfural.Water sample shows transparence, shows yellowish colourity, pH is 1.5～2.5, COD is that 17000～19000mg/L, BOD are that 2700～2900mg/L, B/C 0.16, biodegradability are not good.Detect through after half a year, detect effect as shown in Figure 2, as can be seen from Figure 2 water outlet does not almost have furfural and detects, but water outlet still contains the part carboxylic acid, water outlet COD is 16000～18000mg/L (COD descends not too obvious), and (be elevated to 9000～9500mg/L), B/C brings up to about 0.54 greatly in the BOD variation, water outlet has good biochemical activity, can satisfy the back in the requirement of biochemical processing process.
Claims (8)
1. the method that adopts class Fenton-fluidized bed sewage processor to dispose of sewage, class Fenton-fluidized bed sewage processor wherein, it mainly is made of first Fenton reactor (1), second Fenton reactor (2), lift pump (7), first recycle pump (3) and second recycle pump (9); Be connected by lift pump (7) between first Fenton reactor (1) and second Fenton reactor (2); First recycle pump (3) two ends communicate with first Fenton reactor (1), second recycle pump (9) two ends communicate with second Fenton reactor (2), it is characterized in that the method that adopts class Fenton-fluidized bed sewage processor to dispose of sewage carries out according to the following steps: one, be 5% H with fe and mass concentration
2O
2Solution adds in the interior sewage of first Fenton reactor (1), and the gas velocity of pressing 1mL/min is reacted 4～5min from first Fenton reactor (1) bottom bubbling air; Two, open the effluent index BOD that first recycle pump (3) is regulated control of reflux ratio first Fenton reactor (1)
5/ COD
Mn〉=0.30; Three, first Fenton reactor (1) water outlet is pumped in second Fenton reactor (2) that the seed activity Al filler is housed by lift pump (7), adds H then
2O
2Solution, and to regulate water pH value with NaOH be 7.5～8.5; Four, open second recycle pump (9) and regulate control of reflux ratio second Fenton reactor (2) water outlet BOD
5/ COD
Mn〉=0.50, iron concentration≤1.5mg/L, water outlet is promptly finished and is disposed of sewage; H in the step 1
2O
2H in the solution
2O
2With COD in the sewage
MnMass ratio be 0.8～1.5: 1; H
2O
2H in the solution
2O
2With the mol ratio of fe be 2.5～4: 1; H in the step 3 wherein
2O
2The add-on of solution is identical with step 1.
2. the method that employing class Fenton-fluidized bed sewage processor according to claim 1 is disposed of sewage is characterized in that H in the step 1
2O
2H in the solution
2O
2With COD in the sewage
MnMass ratio be 0.9～1.2: 1.
3. the method that employing class Fenton-fluidized bed sewage processor according to claim 1 and 2 is disposed of sewage is characterized in that H in the step 1
2O
2H in the solution
2O
2With the mol ratio of fe be 3.2～3.8: 1.
4. the method that employing class Fenton-fluidized bed sewage processor according to claim 3 is disposed of sewage is characterized in that the reaction times is 4.5min in the step 1.
5. the method that employing class Fenton-fluidized bed sewage processor according to claim 1 and 2 is disposed of sewage is characterized in that effluent index is BOD in the step 2
5/ COD
Mn＞0.40.
6. the method that employing class Fenton-fluidized bed sewage processor according to claim 5 is disposed of sewage is characterized in that in the step 3 with pH regulator being 7.8～8.2.
7. the method that employing class Fenton-fluidized bed sewage processor according to claim 1 and 2 is disposed of sewage is characterized in that effluent index is BOD in the step 4
5/ COD
Mn＞0.60.
8. the method that employing class Fenton-fluidized bed sewage processor according to claim 7 is disposed of sewage is characterized in that in the step 4 iron concentration＜1.2mg/L in the solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100714636A CN101486518B (en) | 2009-02-27 | 2009-02-27 | Fenton-like-fluidized bed sewage processor and sewerage treating method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100714636A CN101486518B (en) | 2009-02-27 | 2009-02-27 | Fenton-like-fluidized bed sewage processor and sewerage treating method therefor |
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| CN101486518B true CN101486518B (en) | 2011-06-15 |
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| CN2009100714636A Expired - Fee Related CN101486518B (en) | 2009-02-27 | 2009-02-27 | Fenton-like-fluidized bed sewage processor and sewerage treating method therefor |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102674505B (en) * | 2011-03-15 | 2013-09-11 | 吉林师范大学 | Special equipment for treating organic sewage by utilizing electro-Fenton reaction |
| CN102311163A (en) * | 2011-04-04 | 2012-01-11 | 上海丰信环保科技有限公司 | Remover for preprocessing garbage leachate |
| CN102249393B (en) * | 2011-06-08 | 2012-10-03 | 武汉凯迪水务有限公司 | Circulating fluidized bed advanced treatment equipment for industrial wastewater |
| CN103073105A (en) * | 2013-02-28 | 2013-05-01 | 陈振选 | Method for removing hard biodegradable organic matters from sewage |
| CN103395908B (en) * | 2013-07-09 | 2015-06-03 | 江南大学 | Series type internal circulation Fenton fluidized-bed oxidizing tower |
| CN103641230B (en) * | 2013-12-02 | 2015-06-17 | 哈尔滨工业大学 | Method for carrying out organic wastewater pretreatment by using an iron-carbon-Fenton-integrated reactor |
| CN103755007B (en) * | 2014-02-19 | 2015-07-08 | 南京大学 | Fenton fluidized bed treatment device and waste water treatment method thereof |
| CN104192979B (en) * | 2014-09-23 | 2016-04-27 | 南京大学 | A kind of method of Fenton fluidized bed deep treatment biochemical tail water |
| CN105254067B (en) * | 2015-10-28 | 2017-12-08 | 同济大学 | The resource utilization method of advanced treatment of wastewater Fenton process sludge |
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| CN101088926A (en) * | 2006-06-12 | 2007-12-19 | 深圳职业技术学院 | Combined water-treating farrate-fenton reagent process |
| CN101088936A (en) * | 2007-07-11 | 2007-12-19 | 浙江大学 | Process and apparatus for treating waste water containing metal complex |
| CN101254987A (en) * | 2007-04-13 | 2008-09-03 | 东莞市英硫净水服务有限公司 | Handling method for advanced purification of little-volume refractory wastewater and operation equipment |
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2009
- 2009-02-27 CN CN2009100714636A patent/CN101486518B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101088926A (en) * | 2006-06-12 | 2007-12-19 | 深圳职业技术学院 | Combined water-treating farrate-fenton reagent process |
| CN101254987A (en) * | 2007-04-13 | 2008-09-03 | 东莞市英硫净水服务有限公司 | Handling method for advanced purification of little-volume refractory wastewater and operation equipment |
| CN101088936A (en) * | 2007-07-11 | 2007-12-19 | 浙江大学 | Process and apparatus for treating waste water containing metal complex |
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| Title |
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| JP特开平6-106173A 1994.04.19 |
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