CN1193608A - Wastewater treating apparatus - Google Patents
Wastewater treating apparatus Download PDFInfo
- Publication number
- CN1193608A CN1193608A CN98100883A CN98100883A CN1193608A CN 1193608 A CN1193608 A CN 1193608A CN 98100883 A CN98100883 A CN 98100883A CN 98100883 A CN98100883 A CN 98100883A CN 1193608 A CN1193608 A CN 1193608A
- Authority
- CN
- China
- Prior art keywords
- electrode
- voltage
- detecting
- iron
- dissolving
- 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.)
- Granted
Links
Images
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
- C02F2201/4612—Controlling or monitoring
- C02F2201/46125—Electrical variables
- C02F2201/46135—Voltage
-
- 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
- C02F2303/14—Maintenance of water treatment installations
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Activated Sludge Processes (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The invention provides a sewage treatment device. Stable electrode dissolution is implemented. And the electrode consumption is obtained simply, which is convenient for changing the electrode. A dephosphorization treatment device is installed in a miniature combined treatment purification groove which includes a dissolving tank, an iron electrode which is arranged in the dissolving tank, a DC power for supplying current to the electrode and a controlling part. The anode and the cathode of the electrode are iron. Electricity is used to decompose, dissolve and precipitate iron ions which react with phosphoric acid. The controlling part controls the dissolution precipitation amount in the dissolving tank through controlling the power for supplying the electrode and is connected between the power and the electrode in parallel to be used as the voltage sensor of a detecting part for detecting the voltage change between electrodes.
Description
The invention relates to waste disposal plant, detailed it, be waste disposal plant about the merging treatment and purification groove that removes dephosphorization in order to combined sewage etc. from lavatory waste water and sanitary wastewater.
It is disclosed that known this waste disposal plant has the spy to open flat 7-108296 number (C02F3/30) communique.The device that this communique is put down in writing is with filter bed groove or precipitate and separate groove, aeration tank, settling bath and the disinfection trough waste disposal plant according to arranged in order of being sick of, after utilizing pump to suct the interior sewage of aeration tank, send be sick of filter bed groove or precipitate and separate groove back to via the dissolved ferric iron device.
At this, employed dissolved ferric iron device is, is electrode with fibrous or continuous shape ironware, and it is applied direct current or the alternative voltage of 1-67V, the dissolving amount of separating out of the voltage adjustment iron ion that utilization is applied.
,, to outdoor ferroelectric utmost point self-purification groove is moved on the ground, maybe must be spied in the purification tank for the consumption degree of checking electrode because of waste disposal plant (purification tank) is embedded in outdoor undergroundly mostly, pretty troublesome.
When but thereby not checking, use up and the dephosphorization that do not eliminate, have purification tank can't finish problem except that the script purpose of dephosphorization as iron at the electrode of dissolved ferric iron device.
The present invention figures out in view of above-mentioned truth, and its purpose is to provide a kind of waste disposal plant, lysis electrodes stably, and learn the consumption degree of electrode simply, so that change electrode.
For achieving the above object, the present invention takes following technical scheme:
A kind of waste disposal plant, comprise and using so that remove the iron ion of the phosphoric acid in the sewage or the aluminum ion dissolving is separated out the electrode of at least one pair of, set the dissolving tank of this electrode and supply with the electric supply installation of decide electric current between this electrode, it is characterized in that being provided with the consumption state detecting part of detecting electrode by the variation of this inter-electrode voltage.
Described waste disposal plant wherein, has the communicating department with replacing period of circulating a notice of this electrode, communicating department circular just when inter-electrode voltage that this detecting part detected reaches prescribed value.
Described waste disposal plant wherein, is provided with the inter-electrode voltage that this detecting part is detected and is controlled to control part less than assigned voltage.
Described waste disposal plant wherein, is provided with in this inter-electrode voltage and rises and the control part that this electric supply installation stopped when reaching assigned voltage.
Described waste disposal plant wherein, is provided with when this inter-electrode voltage and rises and supply with when reaching assigned voltage and substitute the control part of deciding voltage of deciding electric current between electrode.
A kind of waste disposal plant, comprise and using so that remove the iron ion of the phosphoric acid in the sewage or the aluminum ion dissolving is separated out the electrode of at least one pair of, set the dissolving tank of this electrode, the communicating department of supplying with the ionic concn detecting part of iron ion that the electric supply installation of decide electric current between this electrode, detecting separate out from this electrode dissolving or aluminum ions concentration and circulating a notice of inspection period of this electrode, it is characterized in that when this ionic concn iron concentration that detecting part is detected or aluminium ion concentration during less than prescribed value communicating department just circulate a notice of.
A kind of waste disposal plant, comprise and using so that remove the iron ion of the phosphoric acid in the decontaminated water or the aluminum ion dissolving is separated out the electrode of at least one pair of, set the dissolving tank of this electrode, supply with the electric supply installation of deciding electric current between this electrode, the iron ion that detecting is separated out from the dissolving of this electrode or the ionic concn detecting part of aluminum ions concentration, detect the detecting voltage portion of inter-electrode voltage of this electrode and the communicating department of circulating a notice of inspection period of this electrode, it is characterized in that when inter-electrode voltage that this ionic concn iron concentration that detecting part is detected or aluminium ion concentration are detected less than prescribed value and detecting voltage portion be prescribed value communicating department circular just when above.
A kind of waste disposal plant, comprise and using so that remove the iron ion of the phosphoric acid in the decontaminated water or the aluminum ion dissolving is separated out the electrode of at least one pair of, set the dissolving tank of this electrode, the communicating department of supplying with the ionic concn detecting part of the electric supply installation of decide electric current between this electrode, detecting phosphate ion concentration and circulating a notice of inspection period of this electrode, it is characterized in that communicating department is just circulated a notice of when this ionic concn detecting part is detected phosphate ion concentration above prescribed value.
A kind of waste disposal plant, comprise and using so that remove the iron ion of the phosphoric acid in the decontaminated water or the aluminum ion dissolving is separated out the electrode of at least one pair of, set the dissolving tank of this electrode, supply with the electric supply installation of deciding electric current between this electrode, the ionic concn detecting part of detecting phosphate ion concentration, detect the detecting voltage portion of inter-electrode voltage of this electrode and the communicating department of circulating a notice of inspection period of this electrode, it is characterized in that when this ionic concn detecting part detect phosphate ion concentration surpass inter-electrode voltage that prescribed value and detecting voltage portion detected be prescribed value when above communicating department just circulate a notice of.
The 1st kind of above-mentioned device is to comprise using so that remove the iron ion of the phosphoric acid in the decontaminated water or the aluminum ion dissolving is separated out the electrode of at least one pair of, set the dissolving tank of this electrode and supply with the electric supply installation of decide electric current between this electrode, it is characterized in that being provided with the consumption state detecting part of being detected electrode by the variation of this inter-electrode voltage.
The 1st kind of above-mentioned device preferably has the communicating department in order to replacing period of circulating a notice of this electrode, communicating department circular just when inter-electrode voltage that this detecting part detected reaches prescribed value.
The 1st kind of above-mentioned device preferably is provided with the inter-electrode voltage that this detecting part is detected and is controlled to control part less than assigned voltage.
The 1st kind of above-mentioned device, when preferably setting reaches assigned voltage when this inter-electrode voltage rising, the control part that this electric supply installation is stopped.
The 1st kind of above-mentioned device supplied with when preferably setting reaches assigned voltage when this inter-electrode voltage rising and substituted the control part of deciding voltage of deciding electric current between electrode.
The 2nd kind of above-mentioned device, comprise and using so that remove the iron ion of the phosphoric acid in the decontaminated water or the aluminum ion dissolving is separated out the electrode of at least one pair of, set the dissolving tank of this electrode, the communicating department of supplying with the ionic concn detecting part of iron ion that the electric supply installation of decide electric current between this electrode, detecting separate out from this electrode dissolving or aluminum ions concentration and circulating a notice of inspection period of this electrode, it is characterized in that when this ionic concn iron concentration that detecting part is detected or aluminium ion concentration during less than prescribed value communicating department just circulate a notice of.
The 3rd kind of above-mentioned device, comprise and using so that remove the iron ion of the phosphoric acid in the decontaminated water or the aluminum ion dissolving is separated out the electrode of at least one pair of, set the dissolving tank of this electrode, supply with the electric supply installation of deciding electric current between this electrode, the iron ion that detecting is separated out from the dissolving of this electrode or the ionic concn detecting part of aluminum ions concentration, detect the detecting voltage portion of inter-electrode voltage of this electrode and the communicating department of circulating a notice of inspection period of this electrode, it is characterized in that when inter-electrode voltage that this ionic concn iron concentration that detecting part is detected or aluminium ion concentration are detected less than prescribed value and detecting voltage portion be prescribed value communicating department circular just when above.
The 4th kind of above-mentioned device, comprise and using so that remove the iron ion of the phosphoric acid in the decontaminated water or the aluminum ion dissolving is separated out the electrode of at least one pair of, set the dissolving tank of this electrode, the communicating department of supplying with the ionic concn detecting part of the electric supply installation of decide electric current between this electrode, detecting phosphate ion concentration and circulating a notice of inspection period of this electrode, it is characterized in that communicating department is just circulated a notice of when this ionic concn detecting part is detected phosphate ion concentration above prescribed value.
The 5th above-mentioned device, comprise and using so that remove the iron ion of the phosphoric acid in the decontaminated water or the aluminum ion dissolving is separated out the electrode of at least one pair of, set the dissolving tank of this electrode, supply with the electric supply installation of deciding electric current between this electrode, the ionic concn detecting part of detecting phosphate ion concentration, detect the detecting voltage of inter-electrode voltage of this electrode and the communicating department of circulating a notice of inspection period of this electrode, it is characterized in that when this ionic concn detecting part detect phosphate ion concentration surpass inter-electrode voltage that prescribed value and detecting voltage portion detected be prescribed value when above communicating department just circulate a notice of.
Positively effect of the present invention:
If utilize described the 1st invention, because of the detecting part of consumption state of detecting the electrode that carrying out follows of electric decomposition according to the variation that utilizes the inter-electrode voltage decide the current electrical decomposition method is set, have and learn that simply electrode circulates a notice of the communicating department in replacing period of this electrode, just circulate a notice of because of communicating department when inter-electrode voltage that this detecting part detected reaches prescribed value, can notify the replacing opportunity of user's electrode.
If utilize described the 3rd invention, the inter-electrode voltage that control part is detected this detecting part is controlled to less than assigned voltage, except as this effect of above-mentioned the 1st invention, the fear that can avoid getting an electric shock also.
If utilize described the 4th invention, this electric supply installation of control part stops the fear that can avoid getting an electric shock when reaching assigned voltage when this inter-electrode voltage rising.
If utilize described the 5th invention, the electric decomposition of voltage is decided in the control part indication when reaching assigned voltage because of rising when this inter-electrode voltage, substitute and decide the current electrical decomposition, except this effect as above-mentioned the 1st invention, also decide the current electrical decomposition and inter-electrode voltage is remained on prescribed value, can suppress the dephosphorization performance and reduce through stopping.
If utilize described the 6th structure, because of textural when iron concentration or aluminium ion concentration during less than prescribed value communicating department just circulate a notice of, the effect of simply learning according to replacing period of the electrode of electrode life is arranged.
If utilize described the 7th structure, because of the textural inter-electrode voltage that is detected less than prescribed value and detecting voltage portion when iron concentration or aluminium ion concentration is prescribed value communicating department circular just when above, the effect of simply learning according to replacing period of the electrode of electrode life is arranged.
If utilize described the 8th structure, because of textural when phosphate ion concentration surpasses prescribed value communicating department just circulate a notice of, the effect of simply learning according to replacing period of the electrode of electrode life is arranged.
If utilize described the 9th structure, because of textural be prescribed value communicating department circular just when above when phosphate ion concentration surpasses inter-electrode voltage that prescribed value and detecting voltage portion detected, the effect of simply learning according to replacing period of the electrode of electrode life is arranged.
Following with reference to accompanying drawing, describe embodiments of the invention in detail:
Fig. 1 be embodiments of the invention 1 dress the vertical longitudinal sectional drawing of small-sized merging treatment and purification groove of dephosphorization treatment device.
Fig. 2 is the horizontal sectional drawing of the small-sized merging treatment and purification groove of Fig. 1.
Fig. 3 is the vertical longitudinal sectional drawing that the part of the dephosphorization treatment device of Fig. 1 is amplified.
Fig. 4 is the exploded perspective view of electrode unit of a part of the dephosphorization treatment device of pie graph 1.
Fig. 5 is a stereographic map of representing just the electrode unit of 4 Fig. 4 to be contained in the state of dissolving tank.
Fig. 6 is illustrated in the stereographic map of state that dissolving tank has been adorned the electrode unit of 4 Fig. 4.
Fig. 7 is the dephosphorization treatment manipulated or operated apparatus of Fig. 1.
Fig. 8 is that expression uses the dephosphorization treatment device of Fig. 1 to carry out the voltage between terminals (V) of specified direct current electrode when decide the current electrical decomposition and the pass of specific electrode consumption (%) is a figure.
Fig. 9 is the vertical transverse sectional view with the dephosphorization treatment device amplification of embodiments of the invention 2.
Figure 10 is the schema of action of the dephosphorization treatment device of explanatory view 9.
Figure 11 is the vertical transverse sectional view with the dephosphorization treatment device amplification of embodiments of the invention 3.
Figure 12 is the schema of action of the dephosphorization treatment device of explanation Figure 11.
Figure 13 is the vertical transverse sectional view with the dephosphorization treatment device amplification of embodiments of the invention 4.
Figure 14 is the schema of action of the dephosphorization treatment device of explanation Figure 13.
Figure 15 is the vertical transverse sectional view with the dephosphorization treatment device amplification of embodiments of the invention 5.
Figure 16 is the schema of action of the dephosphorization treatment device of explanation Figure 15.
Below according to the drawing of Fig. 1 to Fig. 8 explanation embodiments of the invention 1.In addition, the present invention is not limited by embodiment.
As shown in Figures 1 and 2, the dephosphorization treatment device D of embodiments of the invention 1 packs into to use as the small-sized merging treatment and purification groove 1 with flow conditioning function.
Is the groove structure in the inside of this purification tank 1, by inflow institute's waste water and life be inflow pipe 2 sides of combined sewage of water to Outlet Pipe 3 sides of having finished the water of sewage disposal to the outside discharge, cut according to the order of cleaning and treating engineering of polluted water and to be divided into a plurality of grooves.
The 4th, cut the inclusion that is divided at the forefront of inflow pipe 2 sides and remove groove.Remove groove 4 at this inclusion, making is to remove after sneaking into the inclusion precipitate and separate of the purifying treatment difficulty in lavatory waste water or the sanitary wastewater.
Again, remove the lonely filter bed 7 that groove 4 is provided with the filter bed that is anaerobic microorganism, carry out anaerobic treatment at this lonely filter bed 7 through microorganism is perched at inclusion.The filter bed 7 of being sick of can suppress the suspended solid that the throw out that current are rolled when flowing into that water is temporary banishes forms and flow to next groove, alleviates the load of next groove.
The 8th and inclusion remove groove 4 in abutting connection with the lonely filtering bed grooves that are divided into that cut.Carry out anaerobic treatment through microorganism is perched at lonely filter bed 9 at this lonely filter bed 8.
The 10th and lonely filter bed groove 8 in abutting connection with the biofilm filtration grooves that are divided into that cut.In these biofilm filtration groove 10 settings are aerobic filter beds 11 of the filter bed of aerobic bacteria, carry out aerobic treatment through microorganism is perched at this aerobic filter bed 11.
The 12nd and aerobic filter bed 11 in abutting connection with the processing tanks that are divided into that cut.To after aerobic filter bed 11 aerobic treatment, filtration, leave standstill storage by the treating water of in-migration at this processing tank 12.
The 13rd, cut the disinfection trough 13 that is divided on the top of handling tank 12.Top primary water after this disinfection trough 13 is handled treated tank 12 is disinfected, so that discharge to the outside from Outlet Pipe 3.
Inclusion removes groove 4 and lonely filter bed groove 8 separates with vertical partition 14.Form the advection mouth 15 that runs through partition 14 in the perforate of the top at this interval 14.Then, embed the angle tube at this advection mouth 15 and form round shape advection pipe 16.The lower end of this advection pipe 16 is positioned at the bottom that inclusion is removed this lonely filter bed 7 of groove 4, has cleanout opening concurrently.
The intake 20 of pump of constant delivery type 19 is set on the top of upwelling passage 18, and pump of constant delivery type 19 is shifted to biofilm filtration groove 10 with quantitative sewage from the filter bed groove 8 of being sick of.That is, that sewage is back quantitatively to send into biofilm filtration groove 10 in intake 20 is taken into pump of constant delivery type 19.
At the lonely filter bed 9 of filter bed groove 8 of being sick of, catch the suspended solid (SS) of certain program.The SS that is caught is sick of gradually and decomposes and become dissolved matter or be stored in the bottom of the filter bed groove 8 of being sick of with mud.With the filter bed 9 of being sick of organic property nitrogen is sick of and resolves into ammonium-nitrogen gas again.
Near the bottom of biofilm filtration groove 10, the diffuser 22 of the device of air 21 that looses is configured to the state of being horizontally set with.Should loose device of air 21 through from its diffuser 22 blow out air, and the function of oxygen is supplied with in performance to the aerobic microorganism that perches at the aerobic filter bed 11 of biofilm filtration groove 10.
11 configurating filtered of the aerobic filter beds of biofilm filtration groove 10, attached to the microorganism of this filter member BOD composition etc. is decomposed or SSization after, be filtered the part seizure.Biofilm filtration groove 10 also has the physical filtering effect, also catches SS at this.At biofilm filtration groove 10, ammonium-nitrogen gas is become nitrate ammonia gas through the effect of Nitromonas that nitrogen is become nitric acid or Nitrosomas again.
Between biofilm filtration groove 10 and next processing tank 12, partition 23 is set.Then, be provided with by this partition 23 and connect biofilm filtration groove 10 and handle the U-shaped pipe 24 of tank 12.This U-shaped pipe 24 is in the upper bend of partition 23, at the bottom opening by place, bottom and processing tank 12 of biofilm filtration groove 10.
The pump 25 that is connected with the peristome of U-shaped pipe 24 is set in the bottom of handling tank 12.And, when needs clean biofilm filtration groove 10 when accumulating SS at aerobic filter bed 11, make this pump 25 actions, accumulate in the treating water of handling tank 12 and flow to reverse flow to biofilm filtration groove 10 sides through making with usual, clean aerobic filter bed 11.This back washing water is sent back to inclusion and is removed groove 4 via sending pipe back to from biological membrane filtration groove 10.
To the top that inclusion is removed groove 4, the circulation road 26 of handling the top primary water in the tank 12 in order to constantly to send back to is set by the top of handling tank 12.From the order that flows back to of handling tank 12 influx 28 that flow into to divide a water metering device 27, dephosphorization treatment device D, inclusion to remove groove 4 is set according to water in this circulation road 26.
Primary water is to use air-lift pump 29 to suct from the pars intermedia of handling tank 12 above in the treating water of handling tank 12, behind undue water metering device 27, dephosphorization treatment device D, get back to the top that falls circulation road 6 that inclusion is removed groove 4 via circulation road 26.Air-lift pump 29 is made of with the air-supply duct 31 and the pipe 32 that rises the outer gas blower 30 of groove, air lift.
When air lift was used air-supply duct 31 air feed, the lower ending opening portion of the pipe 32 that rises certainly sucked the treating water of handling tank 12 by the gas blower 30 outside the groove, utilized its air lift to act on and managed interior the rising, delivered to branch water metering device 27.
Divide water metering device 27 to be located at the top of handling tank 12, by positive back side board and left and right side board and base plate integrally formed become rectangular box end structure arranged.Become to flow into chamber 33, water-dividing chamber 3536 and intermediate chamber 34 between the two in its case internal separation.
In inflow chamber 33 inflow pipe that makes to go into from the inflow water of air-lift pump 29 is set.Flow into chamber 33 and intermediate chamber 34 usefulness and formed that wall separates between the perforate that lower side can communicate, so that the treating water undercurrent of inflow chamber 33 and to intermediate chamber 34 advections.
Water-dividing chamber is divided into the 1st water-dividing chamber 35 and the 2nd water-dividing chamber 36 Room totally 2.And the lower end of the partition of the 1st water-dividing chamber 35 and intermediate chamber 34 is fixed on base plate, and the upper end is opened into the V font.The lower end of the partition of the 2nd water-dividing chamber 36 and intermediate chamber 34 is fixed on base plate, and the upper end is opened into concave shape.Then, can adjust the overflow weir that it opens size in the partition installation that is opened into concave shape.
The 1st water-dividing chamber 35 connect with so that treating water to circulation road 26 effusive outlet pipes 37, the 2nd water-dividing chamber 36 connect with so that treating water to biofilm filtration groove 10 effusive outlet pipes 38.Therefore, the treating water that flows into chamber 33 utilizes the height control of overflow weir to be arrived circulation road 26 and biofilm filtration groove 10 by 35 fens water of 2 the 1st water-dividing chambers via intermediate chamber 34.
Dephosphorization treatment device D comprises dissolving tank 39, be configured in this dissolving tank 39 rectangular slab 4 groups of ferroelectric utmost points 4041 and supply with direct supply 42, control part 43 and the switch 44 of 4041 electric currents of these electrodes.In addition, the anode of electrode 4041 and negative electrode all use iron.
Accumulate from outlet pipe 37 effusive treating water at dissolving tank 39.4 groups of ferroelectric utmost points 4041 utilize electric decomposition to make with the iron ion dissolving of phosphatase reaction and separate out.Control part 43 is supplied with ion dissolving the separate out amount of the current control of 4041 at these electrodes at dissolving tank 39 through control.
Also as shown in Figure 3, at dissolving tank 39 4 groups of electrode units 47 are installed, in order to the gas-filled valve 45 of these electrode units 47 inflations and in order to the gas blower 46 outside the groove of being configured in to these gas-filled valve 45 air feed.Each electrode unit 47 disposes in opposite directions with fixed intervals and its top is fixed on keeper 48 behind one group of electrode 4041 and forms.
Be described in more detail it according to Fig. 4, keeper 48 is by the bottom keeper 49 that one group of electrode 4041 and terminal are installed and cover on this bottom keeper 49 and the top keeper 50 that embeds constitutes.Bottom keeper 49 and top keeper 50 are that 2 chimeric pawl 50a being located at top keeper 50 embed 2 embedded hole 49a being located at bottom keeper 49 respectively and integrated.
Be to use the Current Decomposition method of deciding of direct-current polarity counter-rotating (DC-PR) mode at these dissolving tank 39 dissolved irons, to prevent passive stateization (iron becomes undissolved phenomenon).
In anode generation passive stateization, because of covering electrode surface, certain oxide film takes place, but because of hydrogen cleaning electrode surface always takes place,, can make to be difficult for taking place passive stateization through utilizing reversal of poles to provide two electrodes in opposite directions all to become the chance of negative electrode at negative electrode.Again,, become two electrodes and dissolve equably, can change electrode simultaneously because of reversal of poles.The time of this reversal of poles preferably was made as more than 1 hour.Be made as too in short-term, for example with 5 seconds at interval during switch polarity, galvanization iron did not dissolve yet.
Again, the electricity decomposition also can use the DC pulse to decide the current electrical decomposition method.At this moment, a side (negative electrode) adopts the insoluble electrode that is made of metals such as silver or platinum, and at the opposing party's (anode) configuration iron or aluminium electrode.On the passive state countermeasure, utilize the pulse wave of supplying with a large amount of electric currents once in a while to impact.
The gas blower 46 of self-configuring outside groove supplied with gas-filled valve 45 air of the bottom that crosses at electrode unit 47 strings, replenishes the dissolved oxygen in reducing in the treating water.
That is, be ionized into the iron ion Fe of divalent during dissolved ferric iron
+ 2, but for ortho-phosphoric acid PO
4 -3React, need the iron ion Fe of 3 valencys
+ 3, be by Fe
+ 2Becoming needs oxidation, and this utilizes the dissolved oxygen in the treating water to carry out.If no dissolved oxygen, dissolve the iron of separating out and just keep Fe
+ 2, not can with ortho-phosphoric acid PO
4 -3Reaction.Therefore, through from gas-filled valve 45 inflations, replenish the dissolved oxygen in the treating water.
At dissolving tank 39 self-electrodes 4041 dissolved iron ion Fe
+ 2, supply with oxygen in the treating water by gas-filled valve 45.Fe
+ 2Utilize dissolved oxygen to carry out oxide treatment, the limit becomes Fe
+ 3The limit is sent to inclusion and removes groove 4 and ortho-phosphoric acid PO
4 -3Reaction becomes insoluble phosphorus molysite Fe (OH) x (PO
4) y.This ferrophosphorus salt Fe (OH) x (PO
4) to remove the SS of groove 4 be core cohesion to y to be present in inclusion, become bulk and precipitate, be deposited in trench bottom.
The power supply 42 of DC-PR electricity decomposition etc. is arranged at outside the groove.This power supply 42 utilizes control part 43 controls.The voltage-sensor 53 as the detecting part of detecting the inter-electrode voltage variation in parallel between power supply 42 and electrode 4041, as shown in Figure 7.In addition, according to Faraday's law, the dissolving amount of separating out of iron ion is determined by electric current, supplies with electrode and decides electric current because of in theory.
Carry out electrolysis and when dissolved ferric iron is separated out down, electrode 4041 dissolvings and diminishing down gradually, but decide electric current because of supplying with electrode 4041, along with dissolved ferric iron is separated out, supply with the voltage rising of electrode 4041.
Voltage-sensor (detecting part) 53 detects inter-electrode voltage when becoming prescribed value because of this voltage rises, control part 43 just makes to be located at the outer consumption of electrode circular lamp (not showing on the figure) as the vision communicating department of groove and to light, the replacing period of circular electrode 4041, and in order to prevent that voltage from rising, counter electrode 4041 applies decides voltage.
If the prescribed value of voltage at this moment is made as about 20V, danger such as human electric shock just diminish.
Entrust by the user be maintained to change electrode till between, counter electrode 4041 applies decides voltage, along with the surperficial iron of the ferroelectric utmost point 4041 reduces because of dissolving, the electric current that flows through reduces, according to Faraday's law, the dissolving amount of separating out of iron ion reduces, but the performance of removing that can suppress phosphorus reduces.
Again, also can adopt,, consumption of electrode circular lamp be lighted, continue to supply with and decide electric current, and, the decide voltage lower than 25V is acted on electrode 4041 if rise to till the 25V if inter-electrode voltage becomes 20V textural.
Use that structure as above-mentioned dephosphorization treatment device D stipulate decide electric current electricity decomposition method the time electrode 4041 voltage between terminals (inter-electrode voltage) (V) and specific electrode consumption (pass of the minimizing ratio (%) of the surface-area of electrode is as shown in Figure 8.
Specific electrode consumption about 62 when learning that by Fig. 8 voltage between terminals rises to till the 20V.5%, the specific electrode consumption about 71% when voltage between terminals rises to till the 25V.
Secondly, the key element and the function thereof that preferably are attached to this dephosphorization treatment device D are described.
About the rule of selected purification tank, the size of purification tank is not the water quantity and quality decision that flows into according to actual, but according to " the process object personnel of the Decontamination plant for the toilet groove of the different purposes of buildings estimate benchmark=JISA3302 " decision.
That is, the process object personnel of purification tank estimate that benchmark is,
The situation n=5+ of dwelling house (A-67/30)
N: personnel (people) A: total floor area (m of buildings
2)
But A is 67m
2Be made as 5 people when following,
A surpasses 220m
2The time be made as 10 people.
Personnel's evaluation method according to this JIS is unrealistic often.For example, the floor area at buildings surpasses 220m
2The time, in fact only live the groove that 2 people also need 10 humans.
In this situation, when the personnel that try to achieve according to the estimation benchmark of foundation JIS determined the dissolving amount of separating out of iron, the iron that dissolving is separated out exceeded requirement.Iron except with phosphatase reaction, also and hydroxy OH one react, also become indissoluble salt at hydroxide two iron, pile up with mud.Thereby during excessive dissolution iron, the mud of these hydroxide two iron increases, and causes the problems such as number of times (purification tank wash number) increase of extracting mud out, or to separate out iron and consume the electric weight that exceeds needs in order to dissolve, and becomes uneconomical.
Therefore, decision is provided with the switch of the dissolving amount of separating out that cooperates the actual number control iron that uses.Prevent that by this factor degree from dissolving the sludge quantity increase of separating out iron and causing hydroxide two iron, cause that the number of times of extracting mud out increases, and can save the electricity charge simultaneously.Again, also can detect sewage and flow into the influx that merges treatment and purification groove 1, the feasible dissolving amount of separating out of adjusting iron according to the influx of being detected automatically.
According to Fig. 9 and drawing shown in Figure 10 explanation embodiments of the invention 2.
The dephosphorization treatment device D of embodiments of the invention 2
1The 1 the same conduct of packing into has the small-sized merging treatment and purification groove use that flow is adjusted function with embodiment.
Shown in amplifying at Fig. 9, dephosphorization treatment device D
1Comprise dissolving tank 60, be configured in this dissolving tank 60 rectangular slab 4 groups of ferroelectric utmost points 6161 and supply with the direct supply 63 and the control part 64 of 6162 electric currents of these electrodes.In addition, the anode of electrode 6162 and negative electrode all use iron.
Accumulate from outlet pipe 37 effusive treating water at dissolving tank 60.4 groups of ferroelectric utmost points 6162 utilize electric decomposition to make with the iron ion dissolving of phosphatase reaction and separate out.Control part 64 is supplied with ion dissolving the separate out amount of the current control of 6162 at these electrodes at dissolving tank 60 through control.
Install in order to the gas-filled valve 65 of counter electrode 6162 inflations with in order to the gas blower 66 outside the groove of being configured at dissolving tank 60 these gas-filled valve 65 air feed again.At this dephosphorization treatment device D
1Ionic concn detecting part 67 and communicating department 68 with feature also is set.
This ionic concn detecting part 67 is communicated by the downstream side with dissolving tank 60 and adjacent detecting groove 69 and the iron concentration sensor 70 that is provided in this detecting groove 69 constitute.Detecting groove 69 accumulates and contains the treating water that utilizes the iron ion that electric decomposition dissolving separates out from dissolving tank 60.Iron concentration sensor 70, its underpart are immersed in the quantitative treating water that detecting groove 69 is accumulated, and detect the iron concentration in this treating water.
Communicating department 68 is made of the LED lamp as the vision communicating department.The inspection period of these communicating department 68 circular electrodes 6162.That is, when iron concentration sensor 70 iron concentration that detects is discontented with prescribed value, control part 64 indication circular communicating departments 68.That is, when the discontented prescribed value of iron concentration sensor 70 iron concentration that detects, this detecting result one input control part 64, control part 64 just output to the indication in inspection period of communicating department 68 circular electrodes 6162.
Be described in more detail it according to Figure 10.The water-soluble amount of the processing of dissolving tank 60 is 500 milliliters.The flow that flows into the treating water of this dissolving tank 60 is made as 0.5 liter/minute, phosphate ion concentration is made as 15 mg/litre (total phosphorus concentration T-P is 5 mg/litre).When treating water flowed into dissolving tank 60, electrode 6162 was energized.In general running, have 6162 to supply with electric currents (deciding electric current) to electricity, make Fe/P=1.0-2.0.
This control after general running is through the set time (1-24 hour, an example is 12 hours), stops to switch on about 2 minutes (by the storage volumes of the treating water of dissolving tank 60 or the decisions such as steady time of iron concentration).Then, during this stops energising, measure the iron concentration C that detects treating water that groove 69 accumulates with iron concentration sensor 70
1
Then, begin counter electrode 6162 energisings again.The electrical current of this moment is made as 2 times of general running.After 5 minutes (by decisions such as steady time of the storage volumes of the treating water of dissolving tank 60 or iron concentration or reaction times), measure the iron concentration C for the treatment of water with iron concentration sensor 70
2
Secondly, control part 64 compares C
1And C
2Value.And, if C
2-C
1Be more than 1.0 mg/litre, control part 64 generally turns round the set time with regard to indication.And, if C
2-C
1Be discontented 1.0 mg/litre, stop energising, light the LED lamp to communicating department 68 indications simultaneously with regard to counter electrode 6162.(warning shows ON) arrived in the inspection of circular electrode 6162 period.
According to Figure 11 and Figure 12 embodiments of the invention 3 are described.The dephosphorization treatment device D of embodiment 3
2As shown in figure 11, textural is at the illustrated dephosphorization treatment device D of embodiment 2
1The voltage-sensor 71 that sets the voltage of 6162 at detecting electrode forms.
This structure, the inter-electrode voltage that discontented prescribed value of the iron concentration that is detected when iron concentration sensor 70 and voltage-sensor 71 are detected are benchmark values when above, and control part 64 is lighted the LED lamp to communicating department 68 indications.
Be described in more detail according to Figure 12.Counter electrode 6162 energisings when treating water flows into dissolving tank 60.Supply with electric current in general running, make Fe/P=1.5.Then, after (12 hours) are carried out the set time in general running, measure the iron concentration of detecting treating water that groove 69 accumulates with iron concentration sensor 70.
If the iron concentration that is measured is more than 1.0 mg/litre, control part 64 just indication reduces inter-electrode voltage, and makes general running carry out the set time.
And if the iron concentration that is measured is more than discontented 1.0 mg/litre, control part 64 just indication does not reduce inter-electrode voltage, and makes general running carry out the set time.And, if 2/3 when big of the current value ratio initial current value of this moment, continue general running according to original.Anti-, if the current value of this moment is 2/3 when following of initial current value, control part 64 just indication makes the inter-electrode voltage rising.
Then, the inter-electrode voltage that is detected when voltage-sensor 71 is 25V (benchmark value) when following, lights the LED lamp through control part 64 to communicating department 68 indications, and (warning shows ON) arrived in the inspection of circular electrode 6162 period.
According to Figure 13 and Figure 14 embodiments of the invention 4 are described.The dephosphorization treatment device D of embodiment 2
1Iron concentration detecting part 67 communicate and adjacent detecting groove 69 and the iron concentration sensor 70 that is provided in this detecting groove 69 constitute and the dephosphorization treatment device D of embodiment 4 by downstream side with dissolving tank 60
3Ionic concn detecting part 72 communicate by downstream side and adjacent detecting groove 69 and the phosphate ion concentration sensor 73 that is provided in this detecting groove 69 constitute with dissolving tank 60.
Phosphate ion concentration sensor 73 uses has ion induced membrane that maintenance forms a kind of ion induction substance that constitutes as the copper composition of ligand of chain hydrazine.
Be described in more detail embodiment 4 according to Figure 14.The treating water capacity of dissolving tank 60 is 500 milliliters.The flow that flows into the treating water of this dissolving tank 60 is made as 0.5 liter/minute, phosphate ion concentration is made as 15 mg/litre (total phosphorus concentration T-P is 5 mg/litre).When treating water flowed into dissolving tank 60, electrode 6162 was energized.In general running, counter electrode 6162 is supplied with electric currents (deciding electric current), makes Fe/P=1.0～2.0.
This control after (1～24 hour, an example is 12 hours) is carried out the set time in general running, stops to switch on about 2 minutes (by the storage volumes of the treating water of dissolving tank 60 or the decisions such as steady time of iron concentration).Then, during this stops energising, measure the phosphate ion concentration C of detecting treating water that groove 69 accumulates with phosphate ion concentration sensor 73
1'.
Then, begin counter electrode 6162 energisings again.The electrical current of this moment is made as 2 times of general running.After 5 minutes (by decisions such as steady time of the storage volumes of the treating water of dissolving tank 60 or iron concentration or reaction times), measure the phosphate ion concentration C for the treatment of water with phosphate ion concentration sensor 73
2'.
Secondly, control part 64 compares C
1' and C
2' value.And, if (C
1'-C
2')/C
1' be discontented 0.8, that is, and the phosphate ion concentration C after beginning to switch on
2' when surpassing prescribed value, stop energising with regard to counter electrode 6162, through lighting the LED lamp to communicating department 68 indications, (warning shows ON) arrived in the inspection of circular electrode 6162 period simultaneously.
According to Figure 15 and Figure 16 embodiments of the invention 5 are described.The dephosphorization treatment device D of embodiment 5
4As shown in figure 15, textural is at the illustrated dephosphorization treatment device D of embodiment 4
3The voltage-sensor 71 that sets the voltage of 6162 at detecting electrode forms.
It is benchmark value when above that this structure, the phosphate ion concentration that is detected when phosphate ion concentration detecting part 73 surpass inter-electrode voltage that prescribed value and voltage-sensor 71 detected, and control part 64 is lighted the LED lamp to communicating department 68 indications.
Be described in more detail it according to Figure 16.When treating water flows into dissolving tank 60, the LED lamp.
Be described in more detail it according to Figure 16.When treating water flows into dissolving tank 60, counter electrode 6162 energisings.Supply with electric current in general running, make Fe/P=1.5.Then, after (12 hours) are carried out the set time in general running, measure the phosphate ion concentration of detecting treating water that groove 69 accumulates with phosphate ion concentration sensor 73.
If the phosphate ion concentration that is measured is more than 1.0 mg/litre, action roughly is divided into 2 kinds.That is,, make Fe/P=2.0 if to be 1.0 mg/litre above and less than 9.0 mg/litre, supply with electric current for phosphate ion concentration.
And, if phosphate ion concentration is more than 9.0 mg/litre, supply with electric current, make Fe/P=1.5.
Then, the inter-electrode voltage that is detected when voltage-sensor 71 is 25V (benchmark value) when above, lights the LED lamp through control part 64 to communicating department 68 indications, and (warning shows ON) arrived in the inspection of circular electrode 6162 period.
Again, the phosphate ion concentration of detecting treating water that groove 69 accumulates is not when having cataclysm for a long time, for example supplies with electric current and makes that Fe/P=1.5～2.0, phosphate ion concentration also are the inspection periods of electrode 6162 when comparing also no change with initial value.
Claims (9)
1, a kind of waste disposal plant, comprise and using so that remove the iron ion of the phosphoric acid in the sewage or the aluminum ion dissolving is separated out the electrode of at least one pair of, set the dissolving tank of this electrode and supply with the electric supply installation of decide electric current between this electrode, it is characterized in that being provided with the consumption state detecting part of detecting electrode by the variation of this inter-electrode voltage.
2, waste disposal plant as claimed in claim 1 wherein, has the communicating department with replacing period of circulating a notice of this electrode, communicating department circular just when inter-electrode voltage that this detecting part detected reaches prescribed value.
3, waste disposal plant as claimed in claim 1 wherein, is provided with the inter-electrode voltage that this detecting part is detected and is controlled to control part less than assigned voltage.
4, waste disposal plant as claimed in claim 1 wherein, is provided with in this inter-electrode voltage and rises and the control part that this electric supply installation stopped when reaching assigned voltage.
5, waste disposal plant as claimed in claim 1 wherein, is provided with when this inter-electrode voltage and rises and supply with when reaching assigned voltage and substitute the control part of deciding voltage of deciding electric current between electrode.
6, a kind of waste disposal plant, comprise and using so that remove the iron ion of the phosphoric acid in the sewage or the aluminum ion dissolving is separated out the electrode of at least one pair of, set the dissolving tank of this electrode, the communicating department of supplying with the ionic concn detecting part of iron ion that the electric supply installation of decide electric current between this electrode, detecting separate out from this electrode dissolving or aluminum ions concentration and circulating a notice of inspection period of this electrode, it is characterized in that when this ionic concn iron concentration that detecting part is detected or aluminium ion concentration during less than prescribed value communicating department just circulate a notice of.
7, a kind of waste disposal plant, comprise and using so that remove the iron ion of the phosphoric acid in the decontaminated water or the aluminum ion dissolving is separated out the electrode of at least one pair of, set the dissolving tank of this electrode, supply with the electric supply installation of deciding electric current between this electrode, the iron ion that detecting is separated out from the dissolving of this electrode or the ionic concn detecting part of aluminum ions concentration, detect the detecting voltage portion of inter-electrode voltage of this electrode and the communicating department of circulating a notice of inspection period of this electrode, it is characterized in that when inter-electrode voltage that this ionic concn iron concentration that detecting part is detected or aluminium ion concentration are detected less than prescribed value and detecting voltage portion be prescribed value communicating department circular just when above.
8, a kind of waste disposal plant, comprise and using so that remove the iron ion of the phosphoric acid in the decontaminated water or the aluminum ion dissolving is separated out the electrode of at least one pair of, set the dissolving tank of this electrode, the communicating department of supplying with the ionic concn detecting part of the electric supply installation of decide electric current between this electrode, detecting phosphate ion concentration and circulating a notice of inspection period of this electrode, it is characterized in that communicating department is just circulated a notice of when this ionic concn detecting part is detected phosphate ion concentration above prescribed value.
9, a kind of waste disposal plant, comprise and using so that remove the iron ion of the phosphoric acid in the decontaminated water or the aluminum ion dissolving is separated out the electrode of at least one pair of, set the dissolving tank of this electrode, supply with the electric supply installation of deciding electric current between this electrode, the ionic concn detecting part of detecting phosphate ion concentration, detect the detecting voltage portion of inter-electrode voltage of this electrode and the communicating department of circulating a notice of inspection period of this electrode, it is characterized in that when this ionic concn detecting part detect phosphate ion concentration surpass inter-electrode voltage that prescribed value and detecting voltage portion detected be prescribed value when above communicating department just circulate a notice of.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP065086/97 | 1997-03-18 | ||
| JP065086/1997 | 1997-03-18 | ||
| JP06508697A JP3954683B2 (en) | 1997-03-18 | 1997-03-18 | Sewage treatment equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1193608A true CN1193608A (en) | 1998-09-23 |
| CN1120809C CN1120809C (en) | 2003-09-10 |
Family
ID=13276787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98100883A Expired - Fee Related CN1120809C (en) | 1997-03-18 | 1998-03-04 | Wastewater treating apparatus |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP3954683B2 (en) |
| KR (1) | KR100253757B1 (en) |
| CN (1) | CN1120809C (en) |
| TW (1) | TW425377B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111056710A (en) * | 2019-12-28 | 2020-04-24 | 西安建筑科技大学 | Sewage advanced treatment and resource recovery system and method for anaerobic ectopic electric release iron membrane bioreactor |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| JP4421049B2 (en) * | 2000-02-02 | 2010-02-24 | 三洋電機株式会社 | Drain electrode holder |
| JP3685689B2 (en) * | 2000-07-31 | 2005-08-24 | 三洋電機株式会社 | Sewage treatment device and detection method of exchange time of ion supply electrode pair |
| JP4520053B2 (en) * | 2001-01-23 | 2010-08-04 | 三洋電機株式会社 | Sewage treatment equipment |
| JP4520054B2 (en) * | 2001-01-23 | 2010-08-04 | 三洋電機株式会社 | Installation method of sewage treatment equipment |
| JP4548963B2 (en) * | 2001-03-29 | 2010-09-22 | 三洋電機株式会社 | Sewage treatment electrolyzer |
| TWI722800B (en) * | 2020-02-20 | 2021-03-21 | 彭梓育 | Aeration tube |
| EP3882219A1 (en) * | 2020-03-19 | 2021-09-22 | Europhat Sverige AB | Electrolysis phosphate precipitation module |
| CN115784529B (en) * | 2022-12-23 | 2023-08-18 | 浙江海拓环境技术有限公司 | Recycling treatment method of iron phosphate production wastewater |
-
1997
- 1997-03-18 JP JP06508697A patent/JP3954683B2/en not_active Expired - Lifetime
-
1998
- 1998-02-23 TW TW87102671A patent/TW425377B/en not_active IP Right Cessation
- 1998-03-04 CN CN98100883A patent/CN1120809C/en not_active Expired - Fee Related
- 1998-03-11 KR KR1019980008025A patent/KR100253757B1/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111056710A (en) * | 2019-12-28 | 2020-04-24 | 西安建筑科技大学 | Sewage advanced treatment and resource recovery system and method for anaerobic ectopic electric release iron membrane bioreactor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1120809C (en) | 2003-09-10 |
| JPH10258288A (en) | 1998-09-29 |
| TW425377B (en) | 2001-03-11 |
| JP3954683B2 (en) | 2007-08-08 |
| KR19980080108A (en) | 1998-11-25 |
| KR100253757B1 (en) | 2000-04-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7462287B2 (en) | Apparatus and process for treating effluents | |
| CN1167626C (en) | Process and apparatus for electrocogulative treatment of industrial waste water | |
| CN1096424C (en) | Sewage treatment installation | |
| KR100948197B1 (en) | Advanced treating apparatus for removing nitrogen and phosphorus using intermitted aeration, membrane, electrolysis apparatus, advanced method of water treatment using the same | |
| CN1120809C (en) | Wastewater treating apparatus | |
| CN207375910U (en) | A kind of processing system of landfill leachate | |
| CN110156263A (en) | A kind of circulating water cultivation and tail water handle integrated water processing system | |
| CN1302865C (en) | Kitchen refuse disposal system | |
| CN1499925A (en) | Method of shrimp farming in seawater or brackish water ponds | |
| CN210287055U (en) | Domestic sewage integrated treatment device | |
| CN1457322A (en) | Drain treating method, drain treating device and drain treating system | |
| JP2008049343A (en) | Organic waste water treatment device | |
| CN103011528B (en) | Comprehensive sewage treatment system and method | |
| CN208649040U (en) | A kind of proprietary processing unit of high concentration antibiotic organic wastewater | |
| CN1205129C (en) | Equipment for treating sewage | |
| CN217437983U (en) | Light and medium eutrophication artificial landscape lake water body treatment equipment | |
| CN206843280U (en) | A kind of medical treatment or Domestic sewage integrated treatment unit | |
| CN108975568A (en) | Marine culture wastewater and seawater aquatic products processing wastewater harmless treatment device | |
| JP4237582B2 (en) | Surplus sludge reduction device and method | |
| CN1174816A (en) | Sewage treating device | |
| CN1157339C (en) | Installing method for sewage treatment device | |
| JPH10286583A (en) | Apparatus for treating phosphorus-containing organic water apparatus | |
| JP4286580B2 (en) | Wastewater treatment method incorporating electrochemical treatment | |
| CN1245778A (en) | Sewage treatment installation | |
| JP4351504B2 (en) | Organic wastewater treatment equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20030910 Termination date: 20110304 |