CN104817250A - Sludge dewatering performance improvement method of boron-doped diamond electrode coupled calcium chloride - Google Patents
Sludge dewatering performance improvement method of boron-doped diamond electrode coupled calcium chloride Download PDFInfo
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Abstract
The present invention relates to the technical field of sludge dewatering performance improvement, particularly to a sludge dewatering performance improvement method of boron-doped diamond electrode coupled calcium chloride. According to the method, a titanium-based boron doped diamond electrode is adopted as an anode and a stainless steel electrode plate is adopted as a cathode to form an electrolytic tank; a coupled calcium chloride raw material is added so as to destruct the flocculation structure in the sludge and the biological cell wall, such that the flocculation structure in the sludge and the bound water in the biological cell wall are exposed; and under the addition of the calcium ions, the calcium ions act with the exposed binding site of the bound water so as to release the bound water in the sludge, such that the sludge dewatering performance is substantially improved. Compared with the sludge treating separately using the boron doped diamond electrode as the anode or the sludge treating separately using calcium chloride, the method of the present invention has the following advantages that: the capillary water absorption time of the sludge can be reduced by 30-40%, the concentrations of polysaccharides, proteins and DNA in the supernatant can be increased by 12-24%, and the moisture content of sludge after centrifugation can be reduced to 70.6%.
Description
Technical field
The present invention relates to dewatering performance of sludge improving environment field, especially a kind of boron-doped diamond electrode coupling calcium chloride improves dewatering performance of sludge method.
Background technology
Mud is the inevitable by product of municipal sewage plant's Wastewater Treated by Activated Sludge Process waste water, and along with being on the increase of sanitary sewage, the amount of the mud that sewage work produces also progressively increases, and then makes being processed into further in order to a current primary difficult problem for mud.Because the water ratio of the mud obtained is higher, generally about 98%, the dewatering of visible mud is poor, and then causes the quantity discharged of mud comparatively large, and it is more difficult that solid reclaims.And moisture in mud by Bound moisture, interstitial water, capillary water and free water four part form, all exist in the flocs unit with mud, but the particular location of all types of water in the flocs unit of mud is not identical, its amount contained separately and the difficulty that can be removed also are not identical; Interstitial water (accounting for 20%-25%) is trapped within mud granule gap, and available mechanical method is removed, and its difficulty be removed is lower; The content of capillary water and free water is relatively low, can be left in the basket and disregard; So, in mud, residual maximum moisture is exactly Bound moisture, and this part water accounts for the 70%-75% of mud total water content, and it is present in complicated batting-unit structure in mud and microorganism cells.Thus, the key for the improvement of the dewatering of mud is the batting-unit structure changing mud, destroy microorganisms cell walls.
At present, in prior art, have in a large number for the technical scheme of sewage disposal, if the patent No. is 201410664719.5, " a kind of multistage Electrochemical sewage disposal method and device thereof " discloses and a kind ofly adopts multistage electrochemical method to process sewage, and the Substance Transformation of the difficult degradation structure in sewage is the material of easy degrading texture by the strong oxidizing property that the hydroxyl radical free radical adopting boron-doped diamond electrode to produce in the process has, and then the object reached the dirty water decontamination handles, improve the degradation effect of sewage and reduce the cost of sewage disposal.Also there is the single generations to the technical scheme that sewage processes of material such as adopting calcium chloride simultaneously.
But, further process is done for a large amount of mud produced after sewage disposal also relative less with the technical scheme adjusting a large amount of moisture residual in removing mud, especially by the microorganism wall in mud being carried out to destruction process, in adding in conjunction with chlorination calcium substance, the binding site of calcium ion and generation is had an effect, and then the technical scheme of the Bound moisture removed in mud have not been reported.
And, correlation technique of the prior art is adopted to do further process to mud, dewatering after its sludge treatment drawn is also relatively poor, the object of deviating from Bound moisture in mud in a large number can not be met, the capillary water absorption rate of the mud after its process is relatively high, the content of polysaccharide, protein, DNA is relatively low, and the water ratio of the mud after centrifugal treating is still higher.
For this reason, dewatering performance of sludge improving environment field by continuous Exploration & stu dy, and then is provided a kind of new approaches by this researchist.
Summary of the invention
In order to solve the above-mentioned technical problem existed in prior art, the invention provides a kind of boron-doped diamond electrode coupling calcium chloride and improve dewatering performance of sludge method, the original stable flco of mud and cellularstructure can be changed, change the concentration of the inner extracellular polymeric of mud, and Ca
2+can with the functional groups such as the protein in mud, phenols and-OH, and Ca
2+and there is balance of building bridge between solvability protein, the Bound moisture in deep removal mud, reduce sludge treatment difficulty, reduce sludge treatment cost.
Be achieved particular by following technical scheme:
A kind of boron-doped diamond electrode coupling calcium chloride improves dewatering performance of sludge method, adopts titanium base boron-doped diamond electrode as anode, stainless steel plate as negative electrode; Be positioned in the cylindrical utensil that synthetic glass makes, and the spacing arranged between anode electrode and cathode electrode is 3-5cm, voltage 15-21V form electrolyzer, then the calcium chloride process that is coupled, centrifuge dehydration.By electrolysis is coupled with chemical treatment, especially utilize titanium base boron-doped diamond electrode as anodizing, and then utilize titanium base boron-doped diamond electrode to have wide electromotive force window, low current background, form strong oxidizing property OH group, effectively destroy the flucculation structure in mud, and then it is out exposed to make the Bound moisture in flucculation structure obtain, and then reduce difficulty is deviate to the Bound moisture in the flucculation structure in mud, reduce the cost that moisture in mud is deviate from, and then the dewatering of mud is improved largely.Especially titanium base boron-doped diamond electrode surface can not accumulate dirt, there is preferably chemically inert feature, and then avoid the product of electrode surface Electrochemistry process, improve the efficiency of electron transmission and improve the resistance to corrosion of electrode, the work-ing life extending electrode and the ability enhanced sludge treatment, reduce the cost of sludge treatment.Again by the input of calcium chloride, mud flocculation structure is broken under electrochemical action, Ca
2+have an effect with the binding site come out, flocculation structure discharges in the process with some Bound moisture in some biological cell walls, and the dewatering of mud is greatly improved.
Specifically: collect untreated mud, detect pH, and add in mud volumetric molar concentration be 0.1-1mol/L pH adjusting agent regulate pH be 5.5-7; Adopt titanium base boron-doped diamond electrode again as anode, stainless steel plate as negative electrode; And the spacing arranged between anode electrode and cathode electrode is 3-5cm, voltage 15-21V, and be 50-100r/min stir process 15-20min with stirring velocity; Drop into 8-15mg calcium chloride according to every gram of mud wherein again, continuing employing stirring speed is 50-100r/min stir process 15-25min; Mud is placed in centrifuge again and carries out processed, its velocity of rotation is 100-1000r/min.
Described pH adjusting agent is the one in hydrochloric acid or sodium hydroxide.
Described calcium chloride is that limit is dropped into, and limit employing stirring speed is 50-100r/min stir process, after the amount of calcium to be chlorinated has all added, and Keep agitation process 20min.
Described coupling calcium chloride process, before the process of coupling calcium chloride, first carries out electrolysis treatment 15-20min.
Described stirring velocity is 80r/min.
Described mud, its pH value is 6.7.
Compared with prior art, technique effect of the present invention is embodied in:
The present invention is anode by titanium base boron-doped diamond electrode, stainless steel electrode plate is after negative electrode composition electrolyzer, be coupled calcium chloride raw material add again, flucculation structure in mud is wrecked, and biological cell wall wrecks, and then make the Bound moisture of the batting-unit structure in mud and biomass cells pars intramuralis out exposed, and calcium ion add environment under, calcium ion and the exposed binding site out of Bound moisture are had an effect, and then the Bound moisture in release mud, the dewatering of mud is improved largely; Compare and adopt separately boron-doped diamond electrode as anodizing mud or be used alone calcium chloride lignin-sludge, the capillary water absorbing time decline 30%-40% of mud can be made, in supernatant liquor, polysaccharide, protein, DNA concentration increase 12%-24%, centrifugal rear moisture percentage in sewage sludge is down to 70.6%, improve sludge treatment efficiency, reduce costs.
Further, the present invention adopts the excess sludge of sewage work of zunyi, guizhou city, and detects the character of mud, pH 6.7, primary sludge water ratio 98.7%, centrifugal rear water ratio 87.9%, sludge specific resistance 3.14 × 1011s
2/ g, capillary water absorbing time 60.1s.And after this mud employing aforesaid method is processed, its capillary water absorbing time is down to 29.1s by 60.1s before treatment, compared with untreated sludge, in supernatant liquor, polysaccharide adds 23.3%, protein concn adds 24.8%, DNA concentration adds 13.8%, and centrifugal rear moisture percentage in sewage sludge is down to 70.6%.Substantially improve the dewatering of mud, reduce sludge treatment difficulty, improve sludge treatment efficiency, reduce sludge treatment cost.
Moreover, the advantage that technical scheme of the present invention has is: improve dewatering performance of sludge by the calcium chloride electrochemical method that is coupled by boron-doped diamond electrode, on the one hand, mud is with negative charge, for balancing these electric charges, in mud granule surface meeting adsorption medium, the ion of oppositely charged forms electrostatic double layer, electrochemical process sludge dewatering is just based on this performance, under External Electrical Field, Sludge Surface absorption positively charged ion be subject to electrical forces attract and to movable cathode, biological cell wall is destroyed, water molecules in mud is carried out, the flocculation structure of mud is destroyed, and compared to other electrodes, titanium base boron-doped diamond electrode has wide electromotive force window, low current background, form strong oxidizing property OH group, the flocculation structure of effective destruction mud, and the features such as the unreactiveness that contamination is dirty and not unique, this makes to which obviate conventional electrodes Electrochemistry reaction product, reduce the efficiency of electron transmission and corrosion-prone shortcoming.On the other hand, mud flco breaks under electrochemical action, Ca
2+have an effect with the binding site come out, some Bound moisture in flco and cell also discharge in the process, and the dewatering of mud is greatly improved.
Embodiment
Below in conjunction with concrete embodiment, further restriction is done to technical scheme of the present invention, but claimed scope is not only confined to done description.
Embodiment 1
A kind of boron-doped diamond electrode coupling calcium chloride improves dewatering performance of sludge method, adopts titanium base boron-doped diamond electrode as anode, stainless steel plate as negative electrode; Be positioned in the cylindrical utensil that synthetic glass makes, and the spacing arranged between anode electrode and cathode electrode is 3m, voltage 15V form electrolyzer, then the calcium chloride process that is coupled, centrifuge dehydration.
Specifically: collect untreated mud, detect pH, when mud presents alkalescence, and add in mud volumetric molar concentration be 0.1mol/L pH adjusting agent regulate pH be 5.5; Adopt titanium base boron-doped diamond electrode again as anode, stainless steel plate as negative electrode; And the spacing arranged between anode electrode and cathode electrode is 3cm, voltage 15V, and be 50r/min stir process 15min with stirring velocity; Drop into 8mg calcium chloride according to every gram of mud wherein again, continuing employing stirring speed is 50r/min stir process 15min; Mud is placed in centrifuge again and carries out processed, its velocity of rotation is 100r/min.
Described pH adjusting agent is hydrochloric acid.
Embodiment 2
A kind of boron-doped diamond electrode coupling calcium chloride improves dewatering performance of sludge method, adopts titanium base boron-doped diamond electrode as anode, stainless steel plate as negative electrode; Be positioned in the cylindrical utensil that synthetic glass makes, and the spacing arranged between anode electrode and cathode electrode is 5cm, voltage 21V form electrolyzer, then the calcium chloride process that is coupled, centrifuge dehydration.
Specifically: collect the mud that non-processed is crossed, detect pH, when mud is acidity, and add in mud volumetric molar concentration be 1mol/L pH adjusting agent regulate pH be 7; Adopt titanium base boron-doped diamond electrode again as anode, stainless steel plate as negative electrode; And the spacing arranged between anode electrode and cathode electrode is 5cm, voltage 21V, and be 100r/min stir process 20min with stirring velocity; Drop into 15mg calcium chloride according to every gram of mud wherein again, continuing employing stirring speed is 100r/min stir process 25min; Mud is placed in centrifuge again and carries out processed, its velocity of rotation is 1000r/min.
Described pH adjusting agent is sodium hydroxide.
Embodiment 3
A kind of boron-doped diamond electrode coupling calcium chloride improves dewatering performance of sludge method, adopts titanium base boron-doped diamond electrode as anode, stainless steel plate as negative electrode; Be positioned in the cylindrical utensil that synthetic glass makes, and the spacing arranged between anode electrode and cathode electrode is 4cm, voltage 20V form electrolyzer, then the calcium chloride process that is coupled, centrifuge dehydration.
Specifically: collect the mud that non-processed is crossed, detect pH, when mud is acidity, and add in mud volumetric molar concentration be 0.9mol/L pH adjusting agent regulate pH be 6.7; Adopt titanium base boron-doped diamond electrode again as anode, stainless steel plate as negative electrode; And the spacing arranged between anode electrode and cathode electrode is 4cm, voltage 20V, and be 80r/min stir process 18min with stirring velocity; Drop into 10mg calcium chloride according to every gram of mud wherein again, continuing employing stirring speed is 80r/min stir process 20min; Mud is placed in centrifuge again and carries out processed, its velocity of rotation is 500r/min.
Described pH adjusting agent is sodium hydroxide.
Embodiment 4
A kind of boron-doped diamond electrode coupling calcium chloride improves dewatering performance of sludge method, adopts titanium base boron-doped diamond electrode as anode, stainless steel plate as negative electrode; Be positioned in the cylindrical utensil that synthetic glass makes, and the spacing arranged between anode electrode and cathode electrode is 4cm, voltage 17V form electrolyzer, then the calcium chloride process that is coupled, centrifuge dehydration.
Specifically: collect the mud that non-processed is crossed, detect pH, mud is rendered as weakly alkaline, and add in mud volumetric molar concentration be 0.5mol/L pH adjusting agent regulate pH be 6; Adopt titanium base boron-doped diamond electrode again as anode, stainless steel plate as negative electrode; And the spacing arranged between anode electrode and cathode electrode is 4cm, voltage 17V, and be 90r/min stir process 17min with stirring velocity; Drop into 13mg calcium chloride according to every gram of mud wherein again, continuing employing stirring speed is 60r/min stir process 23min; Mud is placed in centrifuge again and carries out processed, its velocity of rotation is 800r/min.
Described pH adjusting agent is hydrochloric acid.
Embodiment 5
On the basis of embodiment 1, other steps are with embodiment 1, and a kind of boron-doped diamond electrode coupling calcium chloride improves dewatering performance of sludge method, detects sludge pH, mud is slightly acidic, and add in mud volumetric molar concentration be 0.7mol/L pH adjusting agent regulate pH be 5.5; Adopt titanium base boron-doped diamond electrode again as anode, stainless steel plate as negative electrode; And be 70r/min stir process 16min with stirring velocity; Drop into 9mg calcium chloride according to every gram of mud wherein again, calcium chloride is that limit is dropped into, and limit employing stirring speed is 60r/min stir process, after the amount of calcium to be chlorinated has all added, and Keep agitation process 20min; Mud is placed in centrifuge again and carries out processed, its velocity of rotation is 900r/min.
Described pH adjusting agent is hydrochloric acid.
Embodiment 6
On the basis of embodiment 3, other steps are with embodiment 3, and a kind of boron-doped diamond electrode coupling calcium chloride improves dewatering performance of sludge method, detects sludge pH, when mud is strongly-acid, and add in mud volumetric molar concentration be 1mol/L pH adjusting agent regulate pH be 6.3; Adopt titanium base boron-doped diamond electrode again as anode, stainless steel plate as negative electrode; And the spacing arranged between anode electrode and cathode electrode is 3-5cm, voltage 15-21V, and dropping into 8-15mg calcium chloride according to every gram of mud wherein, take stirring velocity as 50-100r/min stir process 19min; Mud is placed in centrifuge again and carries out processed, its velocity of rotation is 300r/min.
Described pH adjusting agent is sodium hydroxide.
Embodiment 7
A kind of boron-doped diamond electrode coupling calcium chloride improves dewatering performance of sludge method, adopts titanium base boron-doped diamond electrode as anode, stainless steel plate as negative electrode; Be positioned in the cylindrical utensil that synthetic glass makes, and the spacing arranged between anode electrode and cathode electrode is 2cm, voltage 14V form electrolyzer, then the calcium chloride process that is coupled, centrifuge dehydration.
Specifically: collect the mud that non-processed is crossed, detect pH, when mud presents alkalescence, and add in mud volumetric molar concentration be 0.01mol/L pH adjusting agent regulate pH be 4.5; Adopt titanium base boron-doped diamond electrode again as anode, stainless steel plate as negative electrode; And the spacing arranged between anode electrode and cathode electrode is 2cm, voltage 14V, and be 40r/min stir process 15min with stirring velocity; Drop into 3mg calcium chloride according to every gram of mud wherein again, continuing employing stirring speed is 50r/min stir process 15min; Mud is placed in centrifuge again and carries out processed, its velocity of rotation is 100r/min.
Described pH adjusting agent is hydrochloric acid.
Embodiment 8
A kind of boron-doped diamond electrode coupling calcium chloride improves dewatering performance of sludge method, adopts titanium base boron-doped diamond electrode as anode, stainless steel plate as negative electrode; Be positioned in the cylindrical utensil that synthetic glass makes, and the spacing arranged between anode electrode and cathode electrode is 6cm, voltage 22V form electrolyzer, then the calcium chloride process that is coupled, centrifuge dehydration.
Specifically: collect the mud that non-processed is crossed, detect pH, when mud is acidity, and add in mud volumetric molar concentration be 0.9mol/L pH adjusting agent regulate pH be 8; Adopt titanium base boron-doped diamond electrode again as anode, stainless steel plate as negative electrode; And the spacing arranged between anode electrode and cathode electrode is 6cm, voltage 22V, and be 80r/min stir process 18min with stirring velocity; Drop into 10mg calcium chloride according to every gram of mud wherein again, continuing employing stirring speed is 80r/min stir process 20min; Mud is placed in centrifuge again and carries out processed, its velocity of rotation is 500r/min.
Described pH adjusting agent is sodium hydroxide.
Embodiment 9
Mud is the excess sludge of sewage work of zunyi, guizhou city, and its essential property is: pH6.7, primary sludge water ratio 98.7%, centrifugal rear water ratio 87.9%, sludge specific resistance 3.14 × 10
11s2/g, capillary water absorbing time 60.1s.
And according to method of the present invention, get the cylindrical utensil that 1000mL mud is placed in the synthetic glass making of agitator, because sludge pH is 6.7, between 5.5-7.0, pH need not be regulated, the cylindrical utensil that synthetic glass mud being placed in agitator makes, with titanium base boron-doped diamond electrode for anode, stainless steel electrode plate is negative electrode, cathode-anode plate spacing is 4cm, voltage is 18V, stir speed (S.S.) 50-r/min, electrochemical treatment 15 minutes, add calcium chloride 10mg/g, continue to stir, fully mix, react 20 minutes; Mud after process is put into centrifuge centrifugal, detect moisture percentage in sewage sludge.Capillary water absorbing time is down to 29.1s by 60.1s before treatment, and compared with untreated sludge, in supernatant liquor, polysaccharide adds 23.3%, and protein concn adds 24.8%, DNA concentration and adds 13.8%, and centrifugal rear moisture percentage in sewage sludge is down to 70.6%.
Test example:
Increased by the polysaccharide in the capillary water absorbing time to the mud after embodiment 1, embodiment 2, embodiment 3, embodiment 4, embodiment 5, embodiment 6, embodiment 7 and embodiment 8 lignin-sludge, supernatant liquor, protein concn increases, DNA concentration increases and after centrifugal treating, the water ratio of mud detects, it the results are shown in Table shown in 1:
Table 1
Can be drawn by the experimental data of table 1, for the improvement process adopting titanium base boron-doped diamond electrode coupling calcium chloride to carry out dewatering performance of sludge, the individual technical parameter in its treating processes will will affect to some extent on the destructiveness of the batting-unit structure of the mud in treating processes, microorganism wall; Especially the distance between electrode, the amount of the potential of hydrogen of the voltage between electrode and mud itself and the calcium chloride raw material of input and drop into opportunity and the investing method of calcium chloride, all can bring impact to the dewatering of the mud in the present invention; And have the result that the experimental data of upper table shows, technical parameter in the present invention is preferred technical parameter, the dewatering of mud can be made to be improved largely, reduce the dehydration difficulty of mud, and then the mud making municipal sewage treatment produce can obtain minimizing discharge, reduce the difficulty that is further processed of mud and cost that sewage disposal is produced, there is significant economic benefit and the value of environmental protection.
It is important to point out at this; above embodiment and test example are only limitted to be further elaborated technical scheme of the present invention and illustrate; it is not the further restriction to technical scheme of the present invention; the essential characteristics of the non-protruding that those skilled in the art make on this basis and the improvement of non-significant progress, all belong to protection category of the present invention.
Claims (10)
1. boron-doped diamond electrode coupling calcium chloride improves a dewatering performance of sludge method, it is characterized in that, adopts titanium base boron-doped diamond electrode as anode, stainless steel plate as negative electrode; And the spacing arranged between anode electrode and cathode electrode is 3-5cm, voltage 15-21V forms electrolyzer, then the calcium chloride process that is coupled, centrifuge dewaters, and can improve dewatering performance of sludge.
2. boron-doped diamond electrode coupling calcium chloride as claimed in claim 1 improves dewatering performance of sludge method, it is characterized in that, the method for described improvement dewatering performance of sludge, specifically: collect untreated mud, detect pH, and add in mud pH adjusting agent regulate pH be 5.5-7; Adopt titanium base boron-doped diamond electrode again as anode, stainless steel plate as negative electrode; And the spacing arranged between anode electrode and cathode electrode is 3-5cm, voltage 15-21V, and be 50-100r/min stir process 15-20min with stirring velocity; Drop into 8-15mg calcium chloride according to every gram of mud wherein again, continuing employing stirring speed is 50-100r/min stir process 15-25min; Again mud is placed in centrifuge and carries out processed.
3. boron-doped diamond electrode coupling calcium chloride as claimed in claim 1 improves dewatering performance of sludge method, it is characterized in that, described electrolyzer, as anode, stainless steel plate as negative electrode using titanium base boron-doped diamond electrode, be positioned in the cylindrical utensil of synthetic glass making, and the spacing arranged between anode electrode and cathode electrode is 3-5cm, voltage 15-21V.
4. boron-doped diamond electrode coupling calcium chloride as claimed in claim 2 improves dewatering performance of sludge method, it is characterized in that, described pH adjusting agent is the one in hydrochloric acid or sodium hydroxide.
5. boron-doped diamond electrode coupling calcium chloride as claimed in claim 2 improves dewatering performance of sludge method, and it is characterized in that, the volumetric molar concentration of described pH adjusting agent is 0.1-1mol/L.
6. boron-doped diamond electrode coupling calcium chloride as claimed in claim 2 improves dewatering performance of sludge method, it is characterized in that, described calcium chloride is that limit is dropped into, limit employing stirring speed is 50-100r/min stir process, after the amount of calcium to be chlorinated has all added, Keep agitation process 20min.
7. boron-doped diamond electrode coupling calcium chloride as claimed in claim 2 improves dewatering performance of sludge method, it is characterized in that, described coupling calcium chloride process, before the process of coupling calcium chloride, first carries out electrolysis treatment 15-20min.
8. boron-doped diamond electrode coupling calcium chloride as claimed in claim 2 improves dewatering performance of sludge method, and it is characterized in that, described centrifuge carries out processed, and its velocity of rotation is 100-1000r/min.
9. the boron-doped diamond electrode coupling calcium chloride as described in claim 2 or 6 improves dewatering performance of sludge method, and it is characterized in that, described stirring velocity is 80r/min.
10. boron-doped diamond electrode coupling calcium chloride as claimed in claim 2 improves dewatering performance of sludge method, and it is characterized in that, described mud, its pH value is 6.7.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109052896A (en) * | 2018-08-03 | 2018-12-21 | 袁颖宏 | A kind of method of electric osmose and electro-catalysis conditioning deeply dehydrating sludge |
| WO2020057673A1 (en) * | 2018-09-21 | 2020-03-26 | Yanbo Li | Method for controlling an electro-oxidation process using boron doped diamond electrodes |
| CN114656120A (en) * | 2022-04-14 | 2022-06-24 | 江南大学 | Electrochemical dehydration method for excess sludge |
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| CN101255000A (en) * | 2007-11-29 | 2008-09-03 | 深圳市东风龙澄环卫设备有限公司 | Novel method for biological sludge dehydration by perforation condensation technology |
| CN101717174A (en) * | 2009-11-27 | 2010-06-02 | 喻鹏 | Technology for treating sludge of sewage plant by controllable wet oxidation coagulation method |
| CN104326608A (en) * | 2014-11-19 | 2015-02-04 | 中国船舶重工集团公司第七二五研究所 | Multi-stage electrochemical sewage treatment method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101255000A (en) * | 2007-11-29 | 2008-09-03 | 深圳市东风龙澄环卫设备有限公司 | Novel method for biological sludge dehydration by perforation condensation technology |
| CN101717174A (en) * | 2009-11-27 | 2010-06-02 | 喻鹏 | Technology for treating sludge of sewage plant by controllable wet oxidation coagulation method |
| CN104326608A (en) * | 2014-11-19 | 2015-02-04 | 中国船舶重工集团公司第七二五研究所 | Multi-stage electrochemical sewage treatment method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109052896A (en) * | 2018-08-03 | 2018-12-21 | 袁颖宏 | A kind of method of electric osmose and electro-catalysis conditioning deeply dehydrating sludge |
| WO2020057673A1 (en) * | 2018-09-21 | 2020-03-26 | Yanbo Li | Method for controlling an electro-oxidation process using boron doped diamond electrodes |
| CN114656120A (en) * | 2022-04-14 | 2022-06-24 | 江南大学 | Electrochemical dehydration method for excess sludge |
| CN114656120B (en) * | 2022-04-14 | 2023-01-03 | 江南大学 | Electrochemical dehydration method for excess sludge |
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Application publication date: 20150805 |