CN1157339C - Installing method for sewage treatment device - Google Patents
Installing method for sewage treatment device Download PDFInfo
- Publication number
- CN1157339C CN1157339C CNB021023050A CN02102305A CN1157339C CN 1157339 C CN1157339 C CN 1157339C CN B021023050 A CNB021023050 A CN B021023050A CN 02102305 A CN02102305 A CN 02102305A CN 1157339 C CN1157339 C CN 1157339C
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- CN
- China
- Prior art keywords
- electrode
- sewage
- waste disposal
- holding tank
- disposal plant
- 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
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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
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
-
- 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
- C02F2201/4618—Supplying or removing reactants or electrolyte
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The invention provides a method for installing a sewage treating device which can prevent the possibility that a notification part for reporting the time for replacement of the electrode may erroneously function at the time of installation. The sewage treating device 1 is provided with an electrolytic cell 4 and an electrode unit 5. When a septic tank in which such a treating device for sewage 1 is incorporated is installed in a yard, or the like, by embedment, each vessel of the septic tank is first filled with tap water instead of the sewage in order to sink the septic tank to a predetermined position. Subsequently, a pilot run of an electrolysis apparatus is performed with a fixed current value in order to make the amount of eluted ions per unit time constant. Then, an alarm lamp for reporting the time for replacement of the electrode lights up accidentally. Here, 2 to 3 g sodium chloride, at a time is supplied a plurality of times to the cell 4, for example. Then, the electrical conductivity of tap water rises to a predetermined value, the electric current flows more easily to the electrode, output voltage falls to a predetermined value and the alarm lamp turns off.
Description
Technical field
The present invention relates to a kind of method to set up of waste disposal plant, in more detail, the present invention relates to remove the method to set up of waste disposal plant of the purification tank etc. of phosphor in sewage acid.
Background technology
At present, as this kind waste disposal plant, has the sewage holding tank that holds sewage, be arranged in this sewage holding tank, by iron ion or the aluminum ions at least one group electrode of electrolysis stripping except that the phosphoric acid in the decontaminated water, provide electrolysis with the power supply of electric current to these electrodes, the detector of voltage and change the warning howler in period according to the detected result warning electrode of this detector between detecting electrode.
When this waste disposal plant being embedded in place such as garden,, filling with cleaning water such as tap water or well water earlier and replace sewage in the groove for waste disposal plant stably is arranged on the fixed position.Then, allow electrolyzer try out, this electrolyzer output constant current is so that a certain amount of ion of time per unit stripping.
Summary of the invention
Yet for this waste disposal plant, because do not fill with the sewage that should handle in the groove, the electric conductivity of the cleaning water of tap water or well water etc. is low, so can increase to the voltage of electrode output.
So, according to the output of the detector of voltage between detecting electrode, thus warning howler judge electrode and consuming mishandle can take place, warning light is lighted, or is sent the warning buzzer.
The present invention is in view of above-mentioned practical situation, and its purpose is to provide a kind of method to set up of the waste disposal plant of warning howler mishandle can prevent to be provided with the time.
For achieving the above object, the invention provides a kind of method to set up of waste disposal plant, waste disposal plant wherein has: the sewage holding tank that holds sewage; By being arranged on diffuser in the holding tank sewage, being arranged on the holding tank air outside and supplying with gas blower and connect the diffusing device of air that the ventpipe of this diffuser and gas blower constitutes; Be arranged in this sewage holding tank, by iron ion or the aluminum ions at least one group electrode of electrolysis stripping except that the phosphoric acid in the decontaminated water; Provide the power supply of electrolysis to these electrodes with electric current; The voltage-level detector of voltage between detecting electrode; With the warning howler of reporting to the police the period of changing with definite electrode according to the detected result of this voltage-level detector; Wherein possess before holding sewage, in the above-mentioned sewage holding tank that accommodates water, inject ionogen, improve the electric conductivity of the water in this sewage holding tank, make electric current easily flow to electrode, prevent the ionogen implantation step of warning howler mishandle thus.
In in the sewage holding tank, be provided with one group of electrode for electrolysis at least, and hold pending sewage, but when being provided with of waste disposal plant, hold cleaning water or other water such as tap water or well water.
At least one group of electrode is made of desirable forms such as plate or bars, for example, is the suspention shape by the electrode support support and is arranged in the sewage holding tank.These electrodes remove the iron ion or the aluminum ion of the middle phosphoric acid composition that anhydrates by the electrolysis stripping.
One group of electrode is made of following mode.For example, both sides are made of the ferroelectric utmost point or aluminium electrode, and perhaps, side's electrode is made of the ferroelectric utmost point or aluminium electrode, and the opposing party's electrode is made of the insoluble petal electrode.Under the former occasion, make the polarity of electrode opposite as required, can prevent to worry to hinder the formation of ion from the oxide skin electrode stripping, on electrode surface.In addition, in the latter case, the ferroelectric utmost point or aluminium electrode as anode, the insoluble petal electrode as negative electrode.Can be as the insoluble petal electrode with constituting as metals such as silver or platinum.
React to iron ion or the phosphoric acid (ortho-phosphoric acid) aluminum ion and the water in the sewage holding tank from the ferroelectric utmost point or the stripping of aluminium electrode, generate insoluble salt, i.e. insoluble in water phosphorus compound (Fe (OH)
x(PO
4)
yOr Al (OH)
x(PO
4)
y), the flocculation and precipitate.
Power supply is to provide the parts of electrolysis with electric current to these electrodes, and in the present invention, for the released ion amount of guaranteeing time per unit is certain, makes current value keep certain, carries out electrolysis, provides rated current electrolytic electric current.
Detector is the parts of voltage between detecting electrode.In addition, controller changes according to the inter-electrode voltage under the rated current, and in other words, the inter-electrode voltage that produces according to the rated current electrolysis changes, and the consumption state of electrode in the process is carried out in the deduction electrolysis.
That is, carry out along with electrolytic, the result of released ion continuously from the electrode causes electrode surface area slowly to reduce, and at this moment, electrolysis is to carry out under nominal current conditions, so that the released ion amount of time per unit keeps certain.Thus, if electrode is consumed, its surface-area reduces, and inter-electrode voltage just slowly rises.
If the surface-area of electrode reduces to certain value, inter-electrode voltage will rise to quite high value, and has the danger that produces electric shock, also have cause can not the stripping necessary amount ion.Therefore, by detector is set, according to the variation that is caused inter-electrode voltage by the rated current electrolysis, promptly the rising degree of inter-electrode voltage is inferred the consumption state of electrode.As detector, be connected in two interelectrode voltage sensors etc. as using.
Warning howler is based on the parts in replacing period of the detected result warning electrode of detector output.Warning howler can use one or two in the audio alarm device of the visual alarm of LED light lamp or buzzing etc.
The method to set up of the waste disposal plant that the present invention relates to possesses the electrolytical distinctive step of injection.This electrolytical implantation step is, before holding the sewage of sanitary sewage etc., in the above-mentioned sewage holding tank that accommodates water, inject ionogen, improve the electric conductivity of the water in this sewage holding tank, make electric current easily flow to electrode, prevent the step of warning howler mishandle thus.
Promptly, cleaning water such as tap water or well water are being received in the sewage holding tank, when carrying out electrolysis with rated current, the electric conductivity of cleaning water such as tap water or well water is 200 μ s/cm～300 μ s/cm approximately, output voltage as shown in figure 12, can surpass voltage being set, i.e. 15V, this Figure 12 is the graphic representation of the relation of the output voltage obtained according to experiment and electric conductivity.If like this, warning howler produces mishandle.Therefore, in the sewage holding tank, inject ionogen, be dissolved in the cleaning water such as tap water or well water, make its electric conductivity rise to the electric conductivity of sanitary wastewater, for example about 700 μ s/cm～900 μ s/cm.Like this, electric current flows to electrode easily, and output voltage drops to about 10V as shown in figure 12, and warning howler mishandle can not take place.
The amount of electrolyte that should inject is suitably determined according to the size of waste disposal plant, the size of electrolysis setting voltage etc., for example, the weight of cleaning water such as tap water in being contained in waste disposal plant or well water is 1～3 ton, when the upper limit setting voltage during electrolysis was 15V, obtaining according to experiment was the degree of 50～100g.
Method to set up according to the waste disposal plant of the present invention that possesses this ionogen implantation step, the electric conductivity that is contained in cleaning water such as interior tap water of sewage holding tank or well water can be risen to suitable value, make electric current flow to electrode easily, therefore, can prevent the warning howler mishandle.
The method to set up of waste disposal plant of the present invention, used ionogen is sodium-chlor preferably, at least a in lime carbonate and the calcium chloride.
Obtain these easy and inexpensive ionogen by use, can prevent the mishandle of warning howler.
The method to set up of waste disposal plant of the present invention preferably utilizes warning howler to judge the formation of ionogen injection rate.That is, before the sewage that holds sanitary wastewater etc., accommodate cleaning water, in the above-mentioned sewage holding tank that warning howler is moving, inject small amount of electrolyte at every turn, the electrolytical total amount of injecting before making when the warning howler release is as suitable injection rate.
If constitute with this, can utilize warning howler, judge electrolytical injection rate, can inject the suitable electrolyte amount.
Description of drawings
Fig. 1 is the formation explanatory view of the waste disposal plant of the embodiment of the invention 1.
Fig. 2 is the skeleton diagram of the waste disposal plant of Fig. 1.
Fig. 3 is the exploded perspective view of the waste disposal plant of Fig. 1.
Fig. 4 is the stereographic map of Trunk Connector of the waste disposal plant part of pie graph 1.
Fig. 5 is the stereographic map of the preceding state of the Trunk Connector of expression interface chart 4.
Fig. 6 is the stereographic map of state behind the Trunk Connector of expression interface chart 4.
Fig. 7 is the front view of controlling board of the waste disposal plant part of pie graph 1.
Fig. 8 is the curve of relation of the output voltage of the pull-up resistor of electrode assemblie of a waste disposal plant part of expression pie graph 1 and rated current power supply unit.
Fig. 9 is the detection of being done by voltage-level detector of waste disposal plant of presentation graphs 1 and the flow process of the warning done by warning light.
Figure 10 is the inner formation explanatory view that constitutes of purification tank that the waste disposal plant that is assembled with Fig. 1 is described.
Figure 11 is the inner formation explanatory view that constitutes of purification tank that the waste disposal plant that is assembled with the embodiment of the invention 2 is described.
Figure 12 is the output voltage obtained according to experiment and the curve of electric conductivity relation.
Embodiment
Below, be base description two embodiment of the present invention with the accompanying drawing.But these embodiment can not limit protection scope of the present invention.
As Fig. 1～shown in Figure 3, the waste disposal plant 1 of the embodiment of the invention 1 possesses the electrolyzer 4 as the sewage holding tank, a plurality of electrode assemblies 5, and as the rated current power supply unit 15 of power supply, controlling board 6 and repeater 9.
The sewage (sanitary wastewater) that flows into from influx 2 is contained in the electrolyzer 4.Each electrode assemblie 5 is made of an electrode supporting piece of one group of electrode and these electrodes of support.
Rated current power supply unit 15 is supplied with specified Faradaic current to the electrode of electrode assemblie 5, and this nominal Faradaic current is that current value is constant, makes the released ion amount of time per unit keep certain.Controlling board 6 is arranged on the outside of waste disposal plant 1, for example, is arranged on the wall of the very near buildings of the purification tank that is assembled with waste disposal plant 1, connects power supply unit 15, the control electrolysis.Repeater 9 is arranged between controlling board 6 and the electrode assemblie 5, and has a plurality of Trunk Connectors that connect them.
As Fig. 4 and shown in Figure 5, each Trunk Connector 18 is set at screw 19 fixed terminal stud boxes 20 inside, is the butt joint type joint that the top sub 18b by the bottom joint 18a of convex and matrix constitutes.On the joint 18a of bottom, be provided with and connect locking and be connected the coupling joint 18c that removes.
Below, the method for attachment of these Trunk Connectors 18 is described.As shown in Figure 5, bottom joint 18a and top sub 18b are connected, make both chimeric after, as shown in Figure 6, after the coupling of bottom joint 18a joint 18c pushed to top sub 18b by the straight arrows direction, by making the coupling joint rotate along clockwise direction and lock shown in the curve arrow.
As shown in Figure 1, be provided with the device of air 7 that looses on this waste disposal plant 1, this diffusing device of air 7 by the electrode surface in the clean electrolysis of air purge of loosing to prevent electrode passivation.
That is, the device of air 7 that looses is arranged on electrolyzer 4 air outside and is supplied with gas blower 11 and the ventpipe 12 that is connected gas blower 11 and diffuser 10 by the diffuser 10 that is arranged on electrolyzer 4 inner electrode assemblies 5 belows.
In Fig. 1,3 are illustrated in the spout that flows out electrolytic sewage in the electrolyzer 4, the electrode assemblie cable of 8 expression connection electrode assemblies 5 and repeater 9.
Electrode all is made of iron, by electrolysis, and the iron ion of phosphoric acid amount during stripping can remove and anhydrate.4 interior iron ion and the phosphoric acid the water (ortho-phosphoric acid) react from the electrode stripping to electrolyzer, generate water insoluble salt, promptly water insoluble compound (Fe (OH)
x(PO
4)
y) flocculation sediment.
As Fig. 2 and shown in Figure 7, be provided with on the controlling board 6 as the voltage-level detector 16 of detector with as the warning light 17 of visual alarm.
Voltage-level detector 16 is the parts of consumption state that utilize the variation detecting electrode of inter-electrode voltage.That is, in other words voltage-level detector 16, changes according to the inter-electrode voltage that is produced by the rated current electrolysis according to the variation of the inter-electrode voltage under the rated current, detects the consumption state with electrolytic electrode.
As shown in Figure 2, because controlling board 6 is electrolytic function uniies of the specified current and power supply mode of control, be not depleted to a certain amount ofly when following at electrode, as shown in Figure 8, the pull-up resistor of electrode assemblie 5 is R1 (Ω), the output voltage V of rated current power supply unit 15
1Be about 10V.
When a certain amount of, the pull-up resistor of electrode assemblie 5 becomes infinity, output voltage V at consumption of electrode
1Than big by the setting voltage (15V) of predefined pull-up resistor R2 (Ω) decision.This output voltage V
1After voltage-level detector 16 and setting voltage (15V) comparison, warning light 17 is lighted.
Fig. 9 illustrates the detection done by voltage-level detector 16 and the flow process of the warning that produced by warning light 17.
Like this, for waste disposal plant, when consumption of electrode when a certain amount of, can report to the police unusual by lighting warning light 17.
The waste disposal plant 1 of Gou Chenging is assembled on as shown in figure 10 the purification tank and uses like this.
The water that left end inflow pipe side to the processing that this purification tank inside flows into from pending sewage is over is to the right-hand member Outlet Pipe side of outside drain, and the operation of handling by sewage purification is divided into a plurality of grooves.
A is that the foreign material of inflow pipe side forefront are removed groove.Remove among the groove A at these foreign material and to carry out precipitate and separate and remove sneaking into foreign material in the sewage.
B is the anaerobic filter bed groove that contiguous foreign material are removed groove A.In this anaerobic filter bed groove B, anaerobion is perched and on anaerobic filter bed, carry out anaerobic treatment.
C is the biofiltration groove of contiguous anaerobic filter bed groove B.In this biofiltration groove C, be provided as the aerobic filter bed of the filter bed of aerobism microorganism, the aerobism microorganism perched on this aerobic filter bed carry out aerobic treatment and filtration.
D is the processing tank of contiguous biofiltration groove C.This processing tank D leaves standstill after storage makes aerobic treatment by biofiltration groove C, filters the treating water that flows into.
E is positioned at the disinfection trough of handling tank D top.This disinfection trough E normally to by after the primary water disinfection of handling after tank D handles, is put into the outside from Outlet Pipe.
Above foreign material are removed groove A the circulation road being set from handling tank D, refluxes the water in handling always in this circulation road.Be provided with branch water metering device F in proper order, return line G and waste disposal plant 1 by current on this circulation road from processing tank D.Remove in the groove A from the spout 3 effusive water inflow foreign material of waste disposal plant 1.
When this waste disposal plant being embedded in place such as garden, for waste disposal plant stably is arranged on the fixed position, foreign material are removed groove A and are filled with replacement sewage in the groove with tap water (cleaning water) earlier to each groove of disinfection trough E.Then, allow electrolyzer try out, this electrolyzer output constant current is so that a certain amount of ion of time per unit stripping.
So, because of purifying the circulation of trough inner water, also be full of by tap water as the electrolyzer 4 of sewage holding tank.The electrolysis trial run just begins, and warning light 17 is lighted at once.This is that the electric conductivity of tap water is low because as previously mentioned, and as shown in figure 12, because output voltage surpasses setting voltage (for example 15V), warning light 17 produces mishandle.
So, at every turn will be a small amount of (as being injected into several times in the electrolyzer 4 by the electrolytical sodium-chlor of 2～3g) conduct.Like this, the electric conductivity of tap water rises to certain value, and electric current flows through electrode easily, and output voltage drops to about 10V as shown in Figure 12, and warning light 17 extinguishes.
The waste disposal plant 51 of the embodiment of the invention 2 also is assembled on the purification tank shown in Figure 11 and uses.
That is, described waste disposal plant 51 possesses the biofiltration groove C as the sewage holding tank, a plurality of electrode assemblies 5, as Fig. 2, as rated current power supply unit 15, controlling board 6 and the repeater 9 of power supply.
Be provided with on the controlling board 6 as the voltage-level detector 16 of detector with as the warning light 17 of visual alarm.
When this waste disposal plant being embedded in place such as garden, for buried to determining on the position purification tank, foreign material are removed groove A and are filled with tap water earlier to each groove of disinfection trough E and replace sewage in the groove.Allow electrolyzer try out then, this electrolyzer output constant current is so that a certain amount of ion of time per unit stripping.
So because of purifying the circulation of trough inner water, the electrolysis trial run just begins, warning light 17 is lighted at once.This is that the electric conductivity of tap water is low because as previously mentioned, and as shown in figure 12, because output voltage surpasses setting voltage (for example 15V), warning light 17 produces mishandle.
At every turn will be a small amount of (as being injected into several times in the biofiltration groove 4 by the electrolytical sodium-chlor of 2～3g) conduct.So the electric conductivity of tap water rises to certain value, electric current flows through electrode easily, and output voltage drops to about 10V as shown in Figure 12, and warning light 17 extinguishes.
The method to set up of waste disposal plant of the present invention, waste disposal plant wherein has the sewage holding tank that holds sewage, be arranged in this sewage holding tank, remove the iron ion or the aluminum ions at least one group of electrode of the phosphoric acid in the decontaminated water by the electrolysis stripping, provide the power supply of electrolysis to these electrodes with electric current, the detector of voltage and change the warning howler in period according to the detected result warning electrode of this detector between detecting electrode, its method to set up possesses before holding sewage, in the above-mentioned sewage holding tank that accommodates water, inject ionogen, improve the electric conductivity of the water in this sewage holding tank, make electric current easily flow to electrode, prevent the ionogen implantation step of warning howler mishandle therefrom.
Thereby, the electric conductivity that is contained in the cleaning water of tap water in the sewage holding tank or well water etc. can be risen to suitable value, can make electric current easily flow to electrode, thus, can prevent that warning howler from making unnecessary actuation of an alarm.
The used ionogen of the method to set up of waste disposal plant of the present invention is a sodium-chlor, at least a in lime carbonate and the calcium chloride.Thereby, obtain these easy and inexpensive ionogen by use, can prevent the mishandle of warning howler.
The method to set up of waste disposal plant of the present invention is to utilize warning howler to judge the formation of ionogen injection rate.Thereby, can utilize warning howler, judge electrolytical injection rate, can inject the suitable electrolyte amount.
Claims (3)
1. the method to set up of a waste disposal plant, waste disposal plant wherein has: the sewage holding tank that holds sewage; By being arranged on diffuser in the holding tank sewage, being arranged on the holding tank air outside and supplying with gas blower and connect the diffusing device of air that the ventpipe of this diffuser and gas blower constitutes; Be arranged in this sewage holding tank, by iron ion or the aluminum ions at least one group electrode of electrolysis stripping except that the phosphoric acid in the decontaminated water; Provide the power supply of electrolysis to these electrodes with electric current; The voltage-level detector of voltage between detecting electrode; With the warning howler of reporting to the police the period of changing with definite electrode according to the detected result of this voltage-level detector; It is characterized in that:
Possess before holding sewage, in the above-mentioned sewage holding tank that accommodates water, inject ionogen, improve the electric conductivity of the water in this sewage holding tank, make electric current easily flow to electrode, prevent the ionogen implantation step of warning howler mishandle thus.
2. the method to set up of waste disposal plant according to claim 1 is characterized in that, above-mentioned ionogen is a sodium-chlor, at least a in lime carbonate and the calcium chloride.
3. the method to set up of waste disposal plant according to claim 1 and 2 is characterized in that, utilizes warning howler to judge the ionogen injection rate.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP014502/01 | 2001-01-23 | ||
| JP014502/2001 | 2001-01-23 | ||
| JP2001014502A JP4520054B2 (en) | 2001-01-23 | 2001-01-23 | Installation method of sewage treatment equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1367138A CN1367138A (en) | 2002-09-04 |
| CN1157339C true CN1157339C (en) | 2004-07-14 |
Family
ID=18881192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021023050A Expired - Fee Related CN1157339C (en) | 2001-01-23 | 2002-01-17 | Installing method for sewage treatment device |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP4520054B2 (en) |
| KR (1) | KR100445522B1 (en) |
| CN (1) | CN1157339C (en) |
| TW (1) | TW524777B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5702198B2 (en) * | 2011-03-14 | 2015-04-15 | フジクリーン工業株式会社 | Water treatment method |
| CN102687699B (en) * | 2012-05-21 | 2014-07-09 | 毛明艳 | Seawater cleaning system for aquiculture and seedling raising and use method of same |
| CN103771566B (en) * | 2012-10-26 | 2015-06-03 | 成都飞创科技有限公司 | Automatic power polarity reversing method for electric flocculation device |
| CN113860590A (en) * | 2021-10-27 | 2021-12-31 | 佛山市富龙环保科技有限公司 | Pretreatment method of high-concentration industrial wastewater |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3802185B2 (en) * | 1997-03-18 | 2006-07-26 | 三洋電機株式会社 | Sewage treatment equipment |
| JP3954683B2 (en) * | 1997-03-18 | 2007-08-08 | 三洋電機株式会社 | Sewage treatment equipment |
| JP2000218271A (en) * | 1999-01-27 | 2000-08-08 | Matsushita Electric Ind Co Ltd | Electrolytic device |
| JP2000301154A (en) * | 1999-04-19 | 2000-10-31 | Matsushita Electric Ind Co Ltd | Water cleaning apparatus |
| KR100372554B1 (en) * | 1999-07-13 | 2003-03-07 | 황재석 | Improved apparatus for disposal of sewage, waste water and night soil of livestock by constant-current electrolytic analysis |
-
2001
- 2001-01-23 JP JP2001014502A patent/JP4520054B2/en not_active Expired - Fee Related
- 2001-12-24 TW TW090132088A patent/TW524777B/en not_active IP Right Cessation
-
2002
- 2002-01-17 CN CNB021023050A patent/CN1157339C/en not_active Expired - Fee Related
- 2002-01-22 KR KR10-2002-0003722A patent/KR100445522B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002210472A (en) | 2002-07-30 |
| KR20020062702A (en) | 2002-07-29 |
| TW524777B (en) | 2003-03-21 |
| JP4520054B2 (en) | 2010-08-04 |
| CN1367138A (en) | 2002-09-04 |
| KR100445522B1 (en) | 2004-08-21 |
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Granted publication date: 20040714 Termination date: 20120117 |