SG177777A1 - Super advanced sewage treatment method and device - Google Patents
Super advanced sewage treatment method and device Download PDFInfo
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- SG177777A1 SG177777A1 SG2012007043A SG2012007043A SG177777A1 SG 177777 A1 SG177777 A1 SG 177777A1 SG 2012007043 A SG2012007043 A SG 2012007043A SG 2012007043 A SG2012007043 A SG 2012007043A SG 177777 A1 SG177777 A1 SG 177777A1
- Authority
- SG
- Singapore
- Prior art keywords
- effluent
- anode
- cathode
- sewage
- filter cylinder
- Prior art date
Links
- 239000010865 sewage Substances 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 10
- 230000008929 regeneration Effects 0.000 claims abstract description 9
- 238000011069 regeneration method Methods 0.000 claims abstract description 9
- 230000005684 electric field Effects 0.000 claims abstract description 7
- 239000011148 porous material Substances 0.000 claims abstract description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000003957 anion exchange resin Substances 0.000 claims abstract description 5
- 239000010936 titanium Substances 0.000 claims abstract description 5
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 4
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 4
- 239000001257 hydrogen Substances 0.000 claims abstract description 4
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 10
- 150000001768 cations Chemical class 0.000 claims description 5
- 238000007254 oxidation reaction Methods 0.000 claims description 4
- 238000005341 cation exchange Methods 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 3
- 238000006386 neutralization reaction Methods 0.000 claims description 3
- 230000001590 oxidative effect Effects 0.000 claims description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims 1
- 238000006722 reduction reaction Methods 0.000 claims 1
- 229910001415 sodium ion Inorganic materials 0.000 claims 1
- 238000005342 ion exchange Methods 0.000 abstract description 15
- 238000005370 electroosmosis Methods 0.000 abstract description 14
- 238000000746 purification Methods 0.000 abstract description 5
- 238000011161 development Methods 0.000 abstract description 3
- 230000018109 developmental process Effects 0.000 abstract description 3
- 239000013043 chemical agent Substances 0.000 abstract description 2
- 238000013461 design Methods 0.000 abstract description 2
- 239000011347 resin Substances 0.000 description 7
- 229920005989 resin Polymers 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 238000005868 electrolysis reaction Methods 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 230000036571 hydration Effects 0.000 description 3
- 238000006703 hydration reaction Methods 0.000 description 3
- 239000000543 intermediate Substances 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000003014 ion exchange membrane Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002957 persistent organic pollutant Substances 0.000 description 2
- 239000008213 purified water Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 1
- 206010067484 Adverse reaction Diseases 0.000 description 1
- -1 NaCl Chemical class 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000006838 adverse reaction Effects 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000003411 electrode reaction Methods 0.000 description 1
- 238000009296 electrodeionization Methods 0.000 description 1
- 238000000909 electrodialysis Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 239000003456 ion exchange resin Substances 0.000 description 1
- 229920003303 ion-exchange polymer Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 244000000010 microbial pathogen Species 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4693—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
- C02F1/4695—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis electrodeionisation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4698—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electro-osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/46—Apparatus for electrochemical processes
- C02F2201/461—Electrolysis apparatus
- C02F2201/46105—Details relating to the electrolytic devices
- C02F2201/4612—Controlling or monitoring
- C02F2201/46125—Electrical variables
- C02F2201/4613—Inversing polarity
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Molecular Biology (AREA)
- Health & Medical Sciences (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
AbstractThe invention discloses a method and a device for super advanced sewage treatment. The method is characterized in that electro-osmosis is combined with ion exchange, wherein an electro-osmosis unit is an electrolytic bath, a cathode/anode-equivalent micro-pore titanium filter cylinder electrode array and a design that a flow field is parallel to an electric field are adopted, strongly alkaline anion-exchange resin is filled between electrodes; a pump drive is adopted to input the sewage from the bottom of the electrolytic bath in the form of single stream.The sewage is divided into a cathode effluent and an anode effluent through a filter cylinder electrode. The cathode effluent and the anode effluent respectively enter exchange columns filled with hydrogen and sodium cation exchangers so as to prepare a part of desalted water after the super advanced treatment and disinfection solution with disinfection function.The scaling of the electrodes and the alternate regeneration and operation of the subsequent ion-exchangers can be controlled through electrode reverse operation. The method is completely endogenous, does not need any chemical agents or generate secondary pollution, and has wide adaptability in the aspect of the advanced purification of the sewage, so a wide space is provided for the application and development of the method.
Description
HEAR
—_— _ srsoisor -
Super Advanced Sewage Treatment Method and Device
The invention relates to a super advanced sewage treatment method and device, in particularly to a sewage endogenesis-based electro-osmosis and ion exchange method for the super advanced purification of the sewage, belonging to the technical field of sewage reclamation.
In general, the urban sewage discharge accounts for 75-85% of the consumption and the industrial sewage discharge accounts for 80-80% of its consumption. And the sewage, which is actually utilized in a biological or chemical way and disappears in the form of vaporization loss, is less than 25%. Because of low rate of sewage treatment in our country, the majority of the surface water resources and the underground water resources are polluted to different extents, resulting in extra pressure, caused by the shortage of water resource, on the sound and sustainable development of economy and society.
Sewage reclamation is not only favorable for enterprises to increase income and decrease expenditure as well as reduce consumption and improve efficiency, but is also an inevitable option for enhancing the supply capacity of urban water. It is more important to improve the revitalization environment of aquatic ecosystem, benefiting not only the present generation, but the future generations. Advanced sewage treatment means that, in order to cause urban sewage or industrial wastewater, which has been subjected to routine treatment, to reach a certain standard of recycled water and to be reused for production or living, treatment units are added in order to further remove the pollutants that cannot be removed by routine treatment, such as heavy metals, COD, TN, TP, TDS and the like. Electrochemical process has the prominent characteristics of wide adaptability, good cleaning property and easy control in the aspect of removing the pollutants in water. Combination of ion exchange and electrochemical technology research from the beginning that the ion exchange membrane ie. the electrodialysis technology. With ion exchangers and selective ion exchange membranes having ion conduction capability are simultaneously used in,electrodeionization (EDI for short) and electrochemical ion exchange (EIX for short) to overcome the defects that electrolyte addition is required in the process of electrolytic reaction and chemical regeneration is required in the process of ion exchange. However, polarization and osmosis, caused by the verticality of membrane surface and flow field to electric field, 1 To -
Li oo reeeee2r as well as their impacts still exist as key factors that restrict the improvement of operation efficiency and the widening of applicable scope.
The objective of the invention is to provide an endogenesis-based new technology for sewage reclamation, particularly a technology for the super advanced purification of multiple sewages, which can remove the pollutant COD and the saline matters TN, TP and TDS in the sewage synchronously and kill pathogenic microorganisms. For high-salinity organic wastewater, the technology has the efficacy of improving its biodegradability significantly.
The technical solution of the invention is implemented in such a manner that:
A super advanced sewage treatment method is characterized in that electrochemical technology is skillfully combined with ion exchange technology and comprises the steps as follows:
A pump drive is adopted to input the sewage in the form of single stream from the bottom of an electrolytic bath to which a certain direct current voltage is applied, and the sewage is divided into a cathode effluent and an anode effluent through a filter cylinder electrode; the cathode effluent and the anode effluent respectively enter cation exchange columns filled with hydrogen and sodium cation exchangers so as to prepare a part of desalted water after the super advanced treatment and disinfection solution with disinfection function; and the scaling of the electrodes and the alternate regeneration and operation of the subsequent ion-exchangers can be controlled through electrode reverse operation.
In the invention, the mechanism for the electro-osmosis ion exchange process is as follows: in the electro-osmosis ion exchange process, cations with high degree of hydration take their hydration layers to move towards the cathode direction under the action of DC electric field, and can drag a part of diffusion layers (hydration layers) on the micro-pore surface of resin to move together when passing through the anion exchange resin between the electrodes. in order to implement electro-osmosis, the discharge reaction of the cathode is as follows: 2H,0 + 2” — H+ 20H
However, Na*, Ca?" and other cations are not electrolyzed, instead, flow by the cathode under the driving of pressure and take out OH™ and H, which are generated by cathode reaction, thus avoiding that the surfaces of the electrodes are covered by gas generated in the process of electrolysis to further result in current reduction and mass transfer hindrance.
To maintain charge balance, CI" with negative charges and organic pollutants enriched on the anion exchange resin are firstly exchanged or adsorbed, and then move towards the anode direction under the action of DC electric field while oxidization reaction is completed, or organic pollutants are directly oxidized into CO», or active intermediates with short life and extremely strong oxidizing property, such as solvated electrons, free radicals like OH, and C1, generated by oxidization of CI" and its derivative HC10, are generated on the surface of the anode; the main reactions are as follows: 2CIT = Cl; +2e
Cl+H,0 = HCIO + H Cl;
Similarly, these products, driven by pressure, flow by the anode, which not only avoids current reduction and mass transfer hindrance when they are separated from the electrodes owing to the generation of intermediates in the process of electrolysis, but also completely eliminating the adverse reaction in which they are reduced by the cathode, hence, the indirect oxidization action of these intermediates are fully exerted in anode filter element and subsequent applications. Therefore, the pH value of the anode effluent is lower than that of raw water, the concentrations of CI” and HC10 are significantly higher than that of raw water and common flow-through-type electrochemical devices, so the anode effluent has the function of continuous disinfection and higher value in use.
The mechanism for the ion exchange process of the anode and cathode effluents in the invention are as follows: the cathode effluent is led into an exchange column filled with H-type resin, the following neutralization reaction occurs so that NaOH in the cathode effluent is removed to obtain a part of desalted water after the super advanced purification.
R-COOH--Na*+OH— R-COONa+H;0
The anode effluent is led into an exchange column filled with Na-type resin, and the following reaction of the anode effluent with the resin occurs owing to its strong acidicity:
R-COONa + H'—R-COOH + Na’
The above exchange process is to convert the acidic product generated by electrode reaction into neutral salt, i.e. NaCl, in order to increase the pH value thereof and simultaneously finish resin regeneration. Because the main exchange reactions of the anode and cathode effluents are counter reactions to each other, switching can be performed through reverse operation so as to realize continuous operation.
Compared with the prior art, the invention has the positive effects that: 1. The electro-osmosis ion exchange method has wide adaptability in the aspect of the super advanced purification of sewage, no chemical agent is needed and no secondary pollution is caused. 2. The electro-osmosis unit is free from membrane, the cathode/anode-equivalent micro-pore titanium filter element electrode array and the design that the flow field is parallel to the electric field are adopted, thus avoiding mutual interference between the cathode reaction and the anode reaction, and reducing current reduction and mass transfer hindrance, which are caused by gas coverage generated in the process of electrolysis. Furthermore, the elimination for the scaling of electrodes through electrode reverse operation and the regeneration and continuous operation of subsequent ion exchange resin are facilitated. 3. Filling resin between the electrodes results in an electrolyte supporting effect, so as to avoid the limitation on the electrical conductivity of influent. Electrolyte addition is not required when the sewage with low electrical conductivity is treated. 4. The invention provides a new way for poliution control and resource recycling, becomes an extremely promising technology as the recycling of H; is turned into another point for economic growth, and will bring wide prospect to ion exchange application technology in the field of sewage reclamation. 5. A wide space is provided for the application and development of the electro-osmosis ion exchange method due to diversified commercial ion exchangers.
FIG.1 is a structural schematic diagram of the electro-osmosis unit;
FIG.2 is a schematic diagram of the electro-osmosis ion exchange process flow,
FIG.3 is a schematic diagram of the enrichment and conversion mechanisms of the components in sewage,
FiG.4 is a diagram of material balance in the embodiment; in FIG.1, 1—anode, 2—cathode, 3—organic glass shell, and 4—water inlet.
FIG.1 to FIG.4 show a super advanced sewage treatment method and device. The treatment process comprises the steps as follows: (1) a pump drive is adopted to input sewage in the form of single stream from the bottom of an electrolytic bath to which a certain direct current voltage is applied, and the sewage is divided into a cathode effluent and an anode effluent through a filter element electrode, the cathode effluent and the anode effluent respectively enter cation exchange columns filled with hydrogen and sodium cation exchangers so as to prepare a part of desalted water after the super advanced treatment and disinfection solution with disinfection function, and the scaling of the electrodes and the alternate regeneration and operation of the subsequent ion-exchangers can be controlled through electrode reverse operation. In the electrolytic bath for implementing the method, micro-pore titanium filter cylinder electrodes with the area of 0.0113m?, which are three anodes and three cathodes, are arranged uniformly in the form of regular hexagon, and the spacing between the centers of the adjacent anode and cathode is 25mm. 201x7 strongly alkaline styrene anion-exchange resin is filled between the electrodes. The power supply voltage is 25V, the flow of influent is 7.5L/h, and the ratio of the cathode effluent to the anode effluent is 1:1. The experimental results of a simulated water sample (Table 1) after the electro-osmosis ion exchange under the operation condition are shown as Table 2:
Table 1 Parameters of the Simulated Water Sample
Electrical Conductivity/ (us/cm> COD/ (mg/L) Cl Concentration/(mg/L) pH 2100 426 689.79 7.28
Table 2 Parameters of Cathode and Anode Effiuents in the Electro-Osmosis lon Exchange Process
Cl'Concentration(mg/L) pH Electrical Conductivity (ps/cm)
Anode Effluent 2899.10 2.24 -—
Cathode Effluent 120.00 12.36 4500
Table 3 Parameters of Super Advanced Purified Water
Electrical Conductivity/ (us/cm> COD/ (mg/L) Cl'Concentration/(mg/L) pH 350 32. 6 120 7.28
The cathode effluent is led into the exchange column filled with H-type resin, the following neutralization reaction occurs $0 that NaOH in the cathode effluent is removed to obtain the super advanced purified water, which has the desalination rate up to 83% and the removal rate of COD up to 92%. Table 3 shows water quality parameters after the exchange of the cathode effluent. Under experimental conditions, material balance of the simulated water sample after the electro-osmosis ion exchange is shown as FIG.4.
Claims (5)
1. A method for super advanced sewage treatment, characterized in that: the treatment process comprises the step that a pump drive is adopted to input sewage in the form of single stream from the bottom of an electrolytic bath to which a certain direct current voltage is applied, and the sewage is divided into a cathode effluent and an anode effluent through a filter cylinder electrode; the step that the cathode effluent and the anode effluent respectively enter cation exchange columns filled with hydrogen and sodium cation exchangers so as to prepare a part of desalted water after the super advanced treatment and disinfection solution with disinfection function; and the step of electrode reverse operation through which the scaling of the electrodes can be controlled, the alternate regeneration and operation of the subsequent ion-exchangers can be realized.
2. The method for super advanced sewage treatment according to claim 1, wherein the cation exchangers for the treatment of the cathode effluent and the anode effiuent are equivalent, alkaline neutralization reaction occurs between the cathode effluent and the cation exchanger, and high-valence cations in the sewage is preferably removed to obtain demineralized water which is partially desalted, and regeneration reaction occurs between the anode effluent and the -cation exchanger to obtain electrolyzed oxidizing water with disinfection function.
3. An electrolytic bath for implementing the method according to claim 1, characterized in that: (1) a cathode/anode-equivalent micro-pore titanium filter cylinder electrode array is adopted and a flow field and an electric field are enabled to be parallel to each other, and no membrane is needed; and (2) strongly alkaline anion-exchange resin is filled between the cathode and the anode to ensure that the external pressure of the filter cylinder electrode is larger than the internal pressure thereof, thus. the effluent flowing by the cathode takes out OH”, H; and sodium ions generated by reduction reaction, and the effluent flowing by the anode akes out Cl,, CO, O; and chloride ions generated by oxidation reaction.
4. The electrolytic bath according to claim 3,wherein the electric field has the intensity from 1V/mm to . 3V/mm and the average current density from 100A/m? to 500A/m?.
5. The electrolytic bath according to claim 4, wherein the cathode/anode-equivalent micro-pore titanium filter cylinder electrode array adopts a single-electrode structure, and through electrode reverse operation, the scaling of the electrodes can be controlled and the alternate regeneration and operation of the ion-exchangers can be realized.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101878830A CN101696069B (en) | 2009-10-14 | 2009-10-14 | Ultra advanced treatment method and device for sewage |
| PCT/CN2010/075129 WO2011044782A1 (en) | 2009-10-14 | 2010-07-13 | Super advanced sewage treatment method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SG177777A1 true SG177777A1 (en) | 2012-02-28 |
Family
ID=42141212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SG2012007043A SG177777A1 (en) | 2009-10-14 | 2010-07-13 | Super advanced sewage treatment method and device |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN101696069B (en) |
| SG (1) | SG177777A1 (en) |
| WO (1) | WO2011044782A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101696069B (en) * | 2009-10-14 | 2011-10-19 | 大连交通大学 | Ultra advanced treatment method and device for sewage |
| CN104016376B (en) * | 2014-06-25 | 2015-09-30 | 苏州晶瑞化学股份有限公司 | A kind of continuous production method of high-purity potassium hydroxide aqueous solution |
| MY182421A (en) * | 2015-04-10 | 2021-01-25 | Coway Co Ltd | Water treatment apparatus |
| CN107098441A (en) * | 2017-05-12 | 2017-08-29 | 浙江工业大学 | The method that electrochemistry removes Determination of Total Nitrogen in Waste Water |
| CN108178387A (en) * | 2017-12-25 | 2018-06-19 | 浙江飞源环境工程有限公司 | A kind of electrochemical oxidation-iron carbon association system for handling organic wastewater with difficult degradation thereby |
| CN112603229B (en) * | 2020-11-25 | 2022-12-13 | 佛山市顺德区美的洗涤电器制造有限公司 | Device for dish washing machine and dish washing machine |
| CN115594313A (en) * | 2022-10-08 | 2023-01-13 | 青岛理工大学（Cn） | System for hardness removal and synchronous carbon fixation of wastewater in polycrystalline silicon industry and treatment method of wastewater in polycrystalline silicon industry |
| CN115594259B (en) * | 2022-10-08 | 2023-05-12 | 青岛理工大学 | Multipurpose electrochemical device for water treatment and application |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6402916B1 (en) * | 1993-10-27 | 2002-06-11 | Richard L. Sampson | Electrolytic process and apparatus controlled regeneration of modified ion exchangers to purify aqueous solutions and adjust ph |
| CN100402446C (en) * | 2005-04-28 | 2008-07-16 | 浙江工业大学 | Treatment of lead-containing waste water |
| JP4986713B2 (en) * | 2007-05-30 | 2012-07-25 | 株式会社アストム | Desalination method of used seasoning liquid containing shelf life improver |
| CN101259440B (en) * | 2007-12-14 | 2010-09-29 | 大连交通大学 | Electric regeneration method of non-film ion-exchange resin based on equate filter element electrode |
| CN101455972B (en) * | 2008-12-30 | 2010-12-08 | 大连交通大学 | Regeneration method of nano zinc oxide photocatalyst |
| CN101696069B (en) * | 2009-10-14 | 2011-10-19 | 大连交通大学 | Ultra advanced treatment method and device for sewage |
-
2009
- 2009-10-14 CN CN2009101878830A patent/CN101696069B/en not_active Expired - Fee Related
-
2010
- 2010-07-13 WO PCT/CN2010/075129 patent/WO2011044782A1/en active Application Filing
- 2010-07-13 SG SG2012007043A patent/SG177777A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011044782A1 (en) | 2011-04-21 |
| CN101696069A (en) | 2010-04-21 |
| CN101696069B (en) | 2011-10-19 |
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