CN1168666C

CN1168666C - Sewage treatment tank

Info

Publication number: CN1168666C
Application number: CNB021032785A
Authority: CN
Inventors: 福永武士; 治; 小田谦治; 广; 福本明广; 喜; 奥见敏喜
Original assignee: Sanyo Electric Co Ltd
Current assignee: Sanyo Electric Co Ltd
Priority date: 2001-03-14
Filing date: 2002-03-12
Publication date: 2004-09-29
Anticipated expiration: 2022-03-12
Also published as: JP2002273460A; TWI238147B; KR100445271B1; CN1375460A; KR20020073300A

Abstract

The invention provides a sewage treatment tank in which the increase of the size of equipment is prevented, the space required for piping to be connected to this tank is reduced and sewage is prevented from being leaked directly from a piping joint part.In the sewage treatment tank provided with a sewage flow-in pipe for allowing the sewage to flow in and a sewage flow-out pipe for allowing the sewage to flow out, the sewage flow-in pipe is installed so as to introduce the sewage from the upper surface toward the inside of a lower tank.

Description

Sewage treatment tank

Technical field

The present invention relates to be used for the sewage treatment tank of enterprise with sewage treatment facility and home-use sewage treatment facility.

Background technology

In the sewage treatment tank in the past, make sewage flow into the sewage inflow pipe in the groove and make sewage effusive sewage outlet pipe in the groove open described the separating out of Fig. 2 of flat 10-328672 communique to constitute the groove (electrolyzer) as the spy.That is to say that outlet pipe (sewage outlet pipe) along continuous straight runs is installed on this sidewall of separating out groove, and is relative therewith, inflow pipe (sewage inflow pipe) also along continuous straight runs is installed on another relative sidewall.

But such groove of separating out under the situation that inflow pipe is installed with respect to sidewall horizontal, in order to prevent the refluence of sewage, must make the foot of inflow pipe be higher than the topmost of outlet pipe.As a result, enlarged the size on the groove short transverse, the problem of bringing device to maximize.In addition because inflow pipe installs with respect to the sidewall along continuous straight runs, according to inflow pipe on the position relation of other groove of being connected, must make connecting pipings along level or vertical direction bending, bring the problem of pipe distribution operation difficulty.Moreover, under the situation that the connection section of this inflow pipe and connecting pipings leaks, sewage directly drains to the groove outside, so bring machine around the connection section to be exposed to problem in the sewage, for example, at this groove is to separate out under the situation of groove, has the problem that is arranged at groove parts of electric such as electrode immersion on every side.

Summary of the invention

The present invention is conceived to the problem that exists in this background technology and proposes.But its purpose is to provide a kind of size of reduction means short transverse, and the pipe distribution operation be connected with this groove is simplified in the implement device miniaturization, and can avoid sewage directly to drain to sewage treatment tank outside the groove from tubing connection portion.

To achieve these goals, sewage treatment tank of the present invention, comprise the sewage inflow pipe that makes the sewage inflow and make the effusive sewage outlet pipe of sewage, above-mentioned sewage inflow pipe is arranged to import in the downward square groove structure of sewage above a side, described sewage inflow pipe is installed on the sewage treatment tank, and described sewage inflow pipe is free to rotate in the horizontal direction with respect to sewage treatment tank with the outside tubing connection portion that is connected.

Form according to this mode, because the opening of sewage inflow pipe is higher than the topmost of sewage outlet pipe, can prevent to flow backwards, the result compares with structure in the past, can make the height of groove be lower than the caliber of sewage inflow pipe.In addition, owing to be connected on the top of this groove,,, can simplify pipe distribution operation by effectively applying flexibly the space of this saving so can dwindle pipe arrangement connection space with the front operation with connecting pipings that this sewage flows into pipe coupling.In addition, even temporarily leak from this tubing connection portion, sewage also can directly not drain to the outside of groove, but leaks on the top of groove, therefore, can be processed into and makes this sewage that spills not drain to the outside of groove.Form according to this mode, can freely select with sewage flow into pipe coupling connecting pipings horizontal direction towards.Therefore thereby this connecting pipings that is connected on the sewage inflow pipe can directly set pipe arrangement to the direction of hope from the top of groove, carries out pipe arrangement and is connected by making the sewage inflow pipe and the groove of front operation meet mounting condition, can further reduce connection space.

In addition, above-mentioned sewage inflow pipe can be by the top flanged pipe arrangement that is vertically mounted on groove, be installed in the straight tube on this flanged pipe arrangement and be installed in 90 on straight tube degree coupling bend and constitute, but described 90 degree coupling bends serve as that an axle along continuous straight runs rotates freely with this straight tube.

Form according to this mode, not only can freely select to flow into the horizontal direction of the connecting pipings of pipe coupling, and can freely select height location with sewage.Therefore, carry out pipe arrangement and be connected, can further reduce connection space by making the sewage inflow pipe and the groove of front operation meet mounting condition.

In addition, above-mentioned sewage treatment tank also can be used as the electrolysis treatment groove and forms, and this electrolysis treatment groove has the air bell at least one electrode that is made of the pair of electrodes plate and the bottom sewage that is provided in this electrode.In this case, as mentioned above,, therefore, do not worry being provided in parts of electric immersions such as supply unit around the groove or controlling board because sewage can directly not drain to the outside of groove.

Above-mentioned electrolyzer is provided with the sewage outlet pipe in the side with the face-off of sewage inflow pipe, simultaneously below above-mentioned sewage inflow pipe, has framework, this framework makes the effluent stream that flows in the groove produce impact, and, above-mentioned electrode be with groove in set the structure of a plurality of electrode devicies that constitute by the pair of plate-shaped electrode on the vertical direction of effluent stream.

Adopt this structure, the surface of the battery lead plate face-off of formation electrode device is parallel with effluent stream.In addition, the sewage that flows in the groove is disperseed by framework, becomes even stream and flow between a plurality of battery lead plates, and therefore, phosphorus catch rate homogenizing in each electrode device that the metal ion of being separated out by electrode device produces has improved phosphorus and removed rate.

Description of drawings

Fig. 1 is the outward appearance vertical view of the electrolyzer of the invention process form.

Fig. 2 is the vertical view that the electrolyzer of the invention process form unloads the state behind the service cover.

Fig. 3 is the vertical view that the electrolyzer of the invention process form unloads the state behind service cover and the electrode device.

Fig. 4 is the IV-IV sectional view of Fig. 1, makes the electrode device row of sewage outlet pipe side become the state that can observe separator, and the electrode device of sewage inflow pipe side is listed as can observe the lateral STA representation of electrode device.

Fig. 5 is the V-V sectional view of Fig. 2.

Fig. 6 is the enlarged view of the VI part of Fig. 5.

Fig. 7 is the mud relief outlet enlarged view partly of the electrolyzer of the invention process form.

Fig. 8 is the sensing device Zoom Side sectional view partly of the electrolyzer of the invention process form.

Fig. 9 is the pilot circuit figure of electrode device of the electrolyzer of the invention process form.

Figure 10 is the system example of the electrolyzer with the invention process form when being applied to enterprise and handling with draining.

Wherein, the 1st, box main body, the 3rd, lid, the 5th, electrode device row, the 8th, controlling board, the 9th, power supply, the 11st, sewage outlet pipe, the 15th, framework, the 30th, planar portions, 30a is an opening, the 35th, sewage inflow pipe, 35a are flanged pipe arrangements, and 35b is a straight tube, 35c is 90 degree coupling bends, and 35d is a connecting pipings, the 51st, and electrode device, 51a is a battery lead plate, and B is that middle flow is adjusted groove, and C is an electrolyzer.

Concrete form of implementation

Below, illustrate that according to Fig. 1～Fig. 7 the present invention and waste disposal plant are with the concrete form of implementation of electrolyzer.In addition, Fig. 1 is the outward appearance vertical view of the electrolyzer of this form of implementation, Fig. 2 is the vertical view that the electrolyzer of this form of implementation unloads the state behind the service cover, and Fig. 3 is the vertical view that the electrolyzer of this form of implementation unloads the state behind service cover and the electrode device, and Fig. 4 is the IV-IV sectional view of Fig. 1.In addition, among this Fig. 4, the electrode device row of sewage outlet pipe side are become can observe the lateral state of separator, the electrode device of sewage inflow pipe side is listed as can observe the lateral STA representation of electrode device.In addition, Fig. 5 is the V-V sectional view of Fig. 2, and Fig. 6 is the enlarged view of the VI part of Fig. 5, and Fig. 7 is the enlarged view of mud relief outlet part.

At first, the concise and to the point formation of the waste disposal plant of this form of implementation with electrolyzer is described.The container of electrolyzer is the roughly box container of rectangularity of plan view shape, be made of the box main body 1 with given depth, the lid 3 with assigned altitute and two service covers 4, described service cover 4 is the little structures (with reference to Fig. 4) of size that are used to cover the short transverse that is arranged on two place's electrodes maintenance mouths 31 on the lid 3.And the electrodes maintenance mouth 31 of the 4 times quadrate parts of service cover on the lid 3 is provided with electrode device and installs with peristome 32 in the bottom surface, and the periphery of this peristome 32 forms the recess 33 (with reference to Fig. 4) that has as the holding components function of electrode device 51.Insert electrode device 51 from this each recess 33, making the long limit of length direction (hereinafter to be referred as the length direction of battery lead plate 51a) and box main body 1 of the battery lead plate 51a plan view shape of electrode device 51 is equidirectional, be configured to row at certain intervals along the vertical direction of length direction, constitute electrode device row 5 (with reference to Fig. 2, Fig. 4, Fig. 5) thus with this battery lead plate 51a.In addition, side wall upper part at the minor face that constitutes box main body 1 is provided with sewage outlet pipe 11, constitute with the sidewall lid 3 nearby of the minor face of the sidewall face-off that is provided with this sewage outlet pipe 11 on face sewage inflow pipe 35 is set, make sewage flow in the electrolyzer of below (with reference to Fig. 1 etc.) from the top.

Below, be described more specifically the each several part of electrolyzer mentioned above.

When sewage being flowed into and metal ion is separated out in sewage by electrode, box main body 1 forms in order to carry out this processing necessary height and volume.And shown in Fig. 4 waited, being arranged in a side wall upper part that constitutes minor face derived as sewage outlet pipe 11 pipe arrangement along continuous straight runs as mentioned above.In addition, on this sewage outlet pipe 11, liner 11a is set.The following quadrate part of the sewage outlet pipe 11 of this sidewall constitutes the inclination face 12 of inclination, makes the bottom be positioned at the center side of box main body 1.In addition, with sidewalls of this facial 12 face-offs of tilting on also form and tilt facially 13, make it to become and the facial 12 symmetric shapes of above-mentioned inclination.

Near these facial 12, the 13 position formation bottom of electrode device row 5 of tilting make sewage produce convection current in electrolyzer.In addition, form the

framework

14,15 that outward direction stretches out, have the function (with reference to Fig. 4) of the fixed face when this electrolyzer is installed below this

framework

14,15 at the top of this inclination facial 12,13.In addition, the area of the framework 15 of sewage inflow pipe side makes it to have the function as the dispersion face of the sewage that flows into electrolyzer greater than the area of the framework 14 of sewage outlet pipe side.The upper portion of this framework 15 is as the space of accepting from the sewage of sewage inflow pipe 35, and this sewage inflow pipe 35 is installed on the lid 3.

In addition, on the smooth chevron part 16 that has with the same angle of inclination of above-mentioned inclination face 12,13, form the pars intermedia of the electrode device row 5 of box main body 1 bottom surface, the spatial central part of this chevron part 16 and above-mentioned inclination face 12,13 clampings constitutes the central authorities of electrode device row 5, is provided with mud relief outlet 17 in this part.This mud relief outlet 17 is blocked by rubber plug 17a, and in addition, the exterior side of this mud relief outlet 17 is equipped with pipe-fitting joint 17b (with reference to Fig. 7) by bolt 17c and nut 17d by liner 17e, 17f.

In addition, it is fixing with rib 19 in two positions (8 positions altogether) of each electrode device row air bell to be set, and makes it across this mud relief outlet 17 (with reference to Fig. 3).Air bell is set in the upper end of rib 19 embeds, make this rib 19 fixed air diffuser tube 25 under the state protruding a little from the bottom surface with grooving 19a (with reference to Fig. 7).And, on the bottom surface of box main body 1, form support pin 22 four positions.Also can utilize this support pin 22 to place this electrolyzer.

In addition, the upper end edge portion of box main body 1 forms flange portion 23, simultaneously in order to improve the intensity of end edge portion, also forms downward rib 24.

As can be seen from Figure 4, lid 3 has in the upper portion of electrode device row 5 and is used to guarantee the required height such as distribution space of the feed cable of electrode device 51 with link terminal box 6 and feed cable 62, constitute above it electrolyzer above.In addition, the periphery lower end has the flange portion 34 that contacts with the upper end edge flange portion 23 of above-mentioned box main body 1, and the crooked downwards curved tabs 34a of the front end of this flange portion 34 formation, and forms with the form that is covered by box main body 1 upper end.In addition, mode is fixed together so that screw is fastening etc. by screw 34b at these

flange portion

23,34 places for lid 3 and box main body 1.

In addition, above the above-mentioned framework 15 of lid 3, form, at these planar portions 30 places opening 30a is set, and sewage inflow pipe 35 is installed, make it to be connected with this opening 30a from top recessed slightly little space plane portion 30.This sewage inflow pipe 35 is provided with the flanged pipe arrangement 35a of mounting flange, the straight tube 35b that is connected with this flanged pipe arrangement 35a by the below and constitutes with respect to the 90 degree coupling bend 35c that this straight tube 35b can rotate freely installation.With respect to this 90 degree coupling bend 35c, the connecting pipings 35d that supplies with sewage from the front operation is installed.In addition, form the peripheral part of this sewage inflow pipe 35, making this lid 3 and its plan view shape of 1 while of above-mentioned box main body is the shape of taper.

In addition, forming two electrodes maintenance mouths 31 from sewage inflow pipe 35 to the sidewall sections with these sewage inflow pipe 35 face-offs, it is the roughly rectangle on long limit that the plan view shape of this electrodes maintenance mouth 31 makes with the vertical direction in long limit with electrolyzer.This electrodes maintenance mouth 31 forms recesses 33, and this recess 33 is in the degree of depth below lid 3 circumferences, than the position of top slightly of the oilysewage surface in the box main body 1.And, electrode device inserting opening portion 32 is set respectively in the bottom surface of recess 33 with this degree of depth.

Electrode device 51 is to be one group electrode with two iron plate electrodes of rectangle, and these two battery lead plate 51a keep with given interval by the retainer 51b on top.On this retainer 51b, be provided for connecting the terminal 51c of feed cable, in retainer 51b, this terminal 51c and battery lead plate 51a line.The length direction that this electrode device 51 is configured to battery lead plate 51a is the length direction of electrolyzer, with the vertical direction of length direction of this battery lead plate 51a on arrange a plurality of electrode devicies 51.Retainer 51b has the width greater than the width of battery lead plate 51a (size of length direction), a pin-and-hole 51e respectively is set on the two portions that expose from this battery lead plate 51a, and this pin-and-hole 51e engages with the pin 36 of electrode device inserting opening portion 32 peripheries that are configured in lid 3.This pin-and-hole 51e makes the major diameter part in the below, and pin 36 is inserted easily, and upper portion is made small diameter portion, makes it to be maintained fixed well the correctness of position.In addition, handle 51d is set (with reference to Fig. 4～Fig. 6) at the upper section of retainer 51b.

In addition, separator 52 (with reference to Fig. 5, Fig. 6) is installed between electrode device 51, this separator 52 is made of the plastics of insulating material.In addition, separator 52 has size and battery lead plate 51a flat part 52a about equally, and the width support section 52b identical with electrode retainer 51b made on its top.In addition, respectively be provided with one in the both sides of the 52b of this support section with pin 37 around the electrode device inserting opening portion 32 that is arranged on lid 3 or be installed in the hole 52c that the bolt 38 on the lid 3 cooperates.In addition, face is provided with handle 52d (with reference to Fig. 4) on the 52b of support section.In addition, pin 37 and bolt 38 alternately configured.In addition, in the bottom that is positioned at the central separator 52 on the mud relief outlet 17, connect the rubber plug 17a that blocks mud relief outlet 17 by chain 55.

When inserting this separator 52, at first, separator 52 is cooperated with pin 37 or bolt 38, insert simultaneously with electrode device 51.Then, electrode device 51 is cooperated with pin 36, insert simultaneously.At this moment, the retainer 51b of electrode device 51 is for carrying the form (with reference to Fig. 6) on the 52b of support section of separator 52.Then, cooperate with bolt 38 Yi Bian make section be roughly L shaped retaining plate 53, Yi Bian be placed on the retainer 51b of electrode device 51.In addition, 53a is mounted in buffer unit on the retaining plate 53 insulating element of holding concurrently.Then, will keep in repair nut 39 finally fixes with bolt 38 fastening carrying out.Thus, form electrode device row 5 respectively in sewage inflow pipe 35 sides and sewage outlet pipe 11 sides, these electrode device row 5 are the length direction of electrolyzer with the length direction of battery lead plate 51a, on direction, alternately arrange electrode device 51 and separator 52, arrange 8

electrode devicies

51 and 7 separators 52 respectively perpendicular to this battery lead plate 51a length direction.That is to say, form two row electrode device row 5, make it a pair of face-off limit of crosscut electrolyzer.In addition, constitute the Central Line of these electrode device row 5, make it center by above-mentioned mud relief outlet 17.

In addition, on this lid 3, disposing link terminal box 6 between electrode device row 5 and the sewage inflow pipe 35 and between electrode device row 5 and the sewage outlet pipe 11, this link terminal box 6 is positioned at the upper portion of the inclination face 12,13 of above-mentioned box main body 1, is used on than the position above the electrode device 51 of this part electrode device 51 being connected with power supply.The plan view shape of each link terminal box 6 roughly becomes rectangle, sets 4 relaying terminals 61 along its length direction.In addition, 2 of link terminal box 6 configurations, making its length direction is the column direction of electrode device row 5.Therefore, the orientation of 4 relaying terminals 61 is consistent with the column direction of electrode device row 5.In addition, 62 among Fig. 2 and Fig. 4 is the feed cables that connect an electrode device 51 with respect to a relaying terminal 61.In addition, 63 among Fig. 2 and Fig. 3 is the feed cables that connect power supply and each link terminal box 6.

Portion sets the air-diffuser (with reference to Fig. 3, Fig. 4) that two air bells 25 constitute a system respectively below each electrode device row 5.The point of these two air bells 25 connects by pipe connecting 28.This air bell 25 makes a wall (i.e. a wall of Dui Zhi a pair of face-off wall) rising (with reference to Fig. 3, Fig. 5) along the sidewall that constitutes electrolysis flute length limit of the connecting

pipings

26,27 that is connected usefulness with external blower 80, derives to the outside from the grooving 21 (with reference to Fig. 4, Fig. 5) of lid 3 upper ends.And the standpipe 26 of center side is connected with gas blower 80, on the tip of the standpipe 27 of the opposite side of center side blind plug 29 is installed.Therefore, with the standpipe 26 air supply diffuser tubes 25 of air from close central authorities.And, as shown in Figure 3, with two row electrode device row 5 respectively the air bell 25 of two systems of the said structure of corresponding setting pass through connecting pipings 81 respectively and be connected with each gas blower 80.

In addition, grooving 21 also is arranged on the upper end of the face (being the right sidewall among Fig. 5) that stands facing each other with this upper end shown in Figure 4 symmetrically.In addition, as mentioned above, the grooving 19a that air bell 25 embeds on the rib 19 that is arranged at box main body 1 installs.Therefore, if change air bell 25 towards installing, also can carry out the connection of the connecting pipings 81 of gas blower 80 by the grooving of Fig. 5 right sidewall upper end.

As Fig. 1, Fig. 4, shown in Figure 5, on lid 3, cover the electrodes maintenance mouth 31 that on the bottom surface of recess 33, is provided with electrode device inserting opening portion 32 by service cover 4.This service cover 4 is structures of protection human body, makes it not close when using usually because of the electric shocks such as terminal 51c of electrode device 51, opens when construction or when changing electrode device 51.In addition, service cover 4 is fixed on the lid 3 by screw 41, in order to be easy to open and close two handles 42 of formation on service cover 4.

Then, form the planar portions 70 that makes recess on two positions that are adjacent to each other in the bight of above-mentioned two recesses 33.In addition, between this planar portions 70 and any one service cover 4 sensing device 7 is set, this sensing device 7 accommodates two pressure transmitters 75 that the inlet side pressure anomaly is moved in two safety switches 71 that move by the switching of service cover 4 and the air bell 25 that detects two systems.

Below, with Fig. 8 this sensing device 7 is described.Fig. 8 is the local Zoom Side sectional view of this sensing device 7.

As shown in Figure 8, switch capsule 79 is made the size in two bights of the service cover 4 of crossing over adjacency in the plane, and short transverse is made the size that is contained between planar portions 70 and the service cover 4.In addition, safety switch 71 is by being contained in switch capsule 79 switch inside main bodys 72 and constituting by the magnet 73 that mounting cover is installed in service cover 4 the insides, and be designed to: when closing service cover 4, move to connect (ON) mode by means of the reed switch in the effect switch main body 72 of magnet 73; When opening service cover 4, magnet 73 leaves the top of switch main body 72, thus not effect of 73 pairs of switch main bodies of magnet 72, and the reed switch in the switch main body 72 moves to disconnect (OFF) mode, thus, cuts off the power source circuit of electrode device 51.

In addition, though this safety switch 71 only shows one in Fig. 8,,, install two corresponding to the bight of two service covers 4 in order to detect each switch of two service covers 4.That is to say, in switch capsule 79,, promptly, switch main body 72 is installed respectively with respect to symmetric position, the Central Line of lid 3 and in the sustained height position in position corresponding to the bight of two service covers 4.In addition, as mentioned above, switch main body 72 can be installed on any one of planar portions 70 of above-mentioned two positions on face-off both sides, and is relative therewith, the inside (4 positions altogether) in two positions of side corner sections that two service covers 4 adjoin each other is installed magnet 73 (with reference to Fig. 1) respectively.

On the other hand, the air ejiction opening that pressure transmitter 75 can detect air bell 25 as abnormal pressure causes the state of obstruction, that is to say, can detect gas blower 80 ejection wall pressure abnormal ascending and air not supplied with situation in the sewage, when perhaps using the diaphragm type gas blower as gas blower 80, constitute under the situation of barrier film breakage of gas blower 80, i.e. gas blower 80 unusual reductions of ejection wall pressure and air is not supplied with situation in the sewage.In addition, as Fig. 3 or shown in Figure 5, pressure transmitter 75 is connected to respectively on the connecting pipings 81 independently by

pressure ingress pipe

76,77, and this connecting pipings 81 is connected the air bell 25 of two systems with each gas blower 80.In addition, though this pressure transmitter 75 only shows one in Fig. 8,, can on the sustained height position, promptly install two with respect to symmetric position, the Central Line of lid 3 and equal height place.

The pilot circuit of electrode device is described according to Fig. 9 below.In addition, in Fig. 9, only show electrode device row 5.But, in fact, equally also be connected with another electrode device row 5, but do not illustrate for simplification.

As shown in Figure 9, be arranged in 8 electrode devicies 51 of electrode device row 5 of row,, and be connected on the power supply 9 via controlling board 8 by two link terminal boxes 6.And, ON, the OFF information of two safety switches 71 and two pressure transmitters 75 is inputed to controlling board 8.Formation detects service cover 4 when opening by any one safety switch 71, or the motion detection by any one pressure transmitter 75 is cut off the power source circuit of electrode device 51 when going out not by air bell 25 the air normal supply.

The electrolyzer of above-mentioned formation constitutes following system.For example as shown in figure 10, sewage is adjusted groove B via activated sludge tank A and middle flow import among the electrolyzer C under the situation that enterprise handles with draining being used for, coagulative precipitation groove D is set at the rear section side of electrolyzer C.On the other hand, under the situation of home-use merging treatment and purification groove, open flat 10-258283 communique, spy and open the system that the 2000-189977 communique put down in writing and used but configuration example such as spy open flat 10-192869 communique, spy.Below, to situation about utilizing with disintegrating system in waste pipe as enterprise, the action when using this electrolyzer describes.

At first, the sewage of being discharged by enterprise utilizes microbiological degradation BOD composition at activated sludge tank A, and the sewage in this activated sludge tank A is adjusted groove B by middle flow and imported among the electrolyzer C as a certain amount of sewage.At this moment sewage drops to from the top of electrolyzer C on the framework 15 of box main body 1 and is disperseed, and becomes roughly current uniformly, by flowing into sewage outlet pipe 11 between the electrode device 51.Particularly in this form of implementation,, reduced the size of electrolyzer C width because electrode device row 5 are arranged in two row along the direction that is approximately perpendicular to the drainage flow direction, so, can prevent that sewage is at the width end of electrolyzer C Yu Shui.Therefore, can prevent that the phosphorus catch rate that is caused by the iron ion that the electrode device 51 of electrolyzer C end is separated out from reducing, phosphorus is removed efficient and is reduced.

At this moment, under the electrolytic action of electrode device 51, separate out the divalent iron ion, produce hydrogen by negative electrode by the anode of electrode device 51.In addition, by aeration, the divalent iron ion is oxidized to 3 valency iron ions from air bell 25.Then, make density of hydrogen thin out, avoid the danger of exploding by means of air from these air bell 25 ejections.In this occasion, the ortho-phosphoric acid reaction in 3 valency iron ions and the sewage, the phosphorus compound of generation insoluble.By aeration the mud that comprises this phosphorus compound is swum energetically in electrolyzer C, be discharged to the coagulative precipitation groove D of subsequent handling from sewage outlet pipe 11 from air bell 25.Then, in this coagulative precipitation groove D, precipitation is removed the seston that comprises phosphorus compound.

In addition, from air bell 25 to the bottom surface of box main body 1 injection air, the blister bubble is risen upward, the tilted shape that is arranged on the inclination face 12,13 on the sidewall of the sewage inflow side of box main body 1 and sewage outflow side simultaneously and becomes the chevron part 16 of electrode device row 5 intermediary box main bodies 1 bottom surface central authorities forms near the bottom of electrode device row 5, thereby, around air bell 25, introduce sewage to the bottom of box main body 1, cause sewage convection current effectively in electrolyzer C, the discharge of seston is carried out smoothly.In addition, the length direction of battery lead plate 51a is identical with the length direction of electrolyzer C, that is to say, sewage is along the plate-like surface mobile while of battery lead plate 51a, the convection current that produces in above-mentioned electrolyzer C is also flowed along the plate-like surface of battery lead plate 51a, therefore the flow velocity that can quicken this convection current makes phosphorus compound swim effectively.In addition, the cleaning function on the battery lead plate 51a surface that produces by this convection current and aeration can prevent the delay of mud between the battery lead plate 51a of electrode device 51, avoids the generation of accidents such as electric pole short circuit.

As mentioned above, because this electrolyzer C can not make mud be trapped in the groove of itself, therefore, the mud that does not need usually to carry out specially in the electrolyzer C is discharged, and carries out just passable when changing electrode device 51 in the lump.By separating out iron ion from anode, therefore battery lead plate 51a dissolving, consumption must change electrode device 51.In addition, in this form of implementation, anode, negative electrode are made of iron, for fear of only consuming an electrode, regularly carry out the polarity conversion.Moreover owing to dispose separator 52 between the electrode device 51 of adjacency, the consumption of each battery lead plate 51a substantially evenly.When were it not for separator 52, be positioned at intermediary battery lead plate 51a two sides and all bring into play electrolytic action, compare, with 2 times speed dissolving, so can not realize the homogenizing that battery lead plate 51a consumes with outermost battery lead plate 51a.

In electrolytic cells operating C in the manner described above,, can regularly replace electrode device 51 by calculating the elapsed time of battery lead plate 5 1a in advance.At this moment, at first open service cover 4.Then, dismantle the feed cable 62 on the relaying terminal 61 that is connected to link terminal box 6, in addition, unload the retaining plate that is roughly L shaped section 53 of fixed electorde device 51 and separator 52 again.In this case, owing to link terminal box 6 is connected with the form of electrode device 51 with basic adjacency, cooperation, so, can make the distribution of feed cable 62 in perfect order, be easy to carry out the loading and unloading operation of electrode device 51.In addition, when changing electrode device 51,, be connected with rubber plug 17a because chain 55 is passed through in the bottom of this separator 52, thereby can extract rubber plug 17a simultaneously if unload central separator 52.

In addition, if open any one service cover 4, the switch portion that is installed in 73 pairs of switch main bodies of magnet 72 of service cover 4 the insides is inoperative, and under the action effect of this any one safety switch 71, electrode device 51 must cut off the power source circuit of two row electrode device row 5.Thereby, even near the sewage operator and electrode device 51 or the electrode device 51 contact, there is not the danger of electric shock yet.

This form of implementation according to constituting as mentioned above can realize following good effect.

Owing on lid 3, be provided with recessed slightly little space 30, and be provided with sewage inflow pipe 35, make it to be connected with its opening 30a, constituting flows into sewage in the electrolyzer C downwards of top, therefore, if make the opening (being the Link Port with opening 30a in this case) of the sewage inflow pipe 35 of horizontal direction be higher than the topmost of sewage outlet pipe 11, then sewage can not flow backwards.Therefore, the height of electrolyzer C is compared with structure in the past, can dwindle the caliber of sewage inflow pipe.In addition, the connecting pipings 35d that is connected with this sewage inflow pipe 35 connects on the top of this electrolyzer C, thereby that can reduce the front operation adjusts groove B with middle flow and carry out pipe arrangement and be connected needed space.Therefore, according to the position of other groove relation, when level or vertical direction make connecting pipings crooked, can apply flexibly the space of this saving at needs, make the pipe distribution operation summary.In addition, even leaked by this tubing connection portion, sewage can directly not leak into the outside of electrolyzer C yet, but drains to the top of electrolyzer C, thereby, can handle, make this sewage that spills can not flow out to the outside of electrolyzer C.Moreover, set power supply 9 and controlling board 8 with current supply electrode device 51 in the outside of electrolyzer C, there is not sewage directly to drain to worry on these parts of electric, realize safe.

In addition, sewage inflow pipe 35 is contained in straight tube 35b on the flanged pipe arrangement 35a that is installed on above the electrolyzer C, with this straight tube 35b serves as that axle can be installed 90 degree coupling bend 35c with rotating freely, therefore, can freely select horizontal direction and the height location of the connecting pipings 35d that is connected with sewage inflow pipe 35.Therefore, the pipe arrangement that can make the middle flow of sewage inflow pipe 35 and front operation adjust groove B is connected suitable mounting condition and connects, thereby can reduce connection space.

In addition, in electrolyzer C, sewage flows to sewage outlet pipe 11 from sewage inflow pipe 35, employing with respect to the long limit of electrolyzer roughly meet at right angles (promptly with the direction of effluent stream) to approximate vertical the configuration a plurality of electrode devicies 51 structure, therefore, make the flow direction of the surface of the battery lead plate 51a that constitutes electrode device 51, thereby flowing of sewage can be carried out smoothly along sewage.Moreover, make the effluent stream that flows in the electrolyzer C produce ballistic framework 15 owing to below sewage inflow pipe 35, have, thereby, can disperse to flow into sewage in the electrolyzer C by framework 15, becoming uniform current between a plurality of electrode devicies 51 flows, therefore phosphorus capturing efficiency homogenizing in each electrode device 51 of producing of the iron ion of being separated out by electrode device 51, phosphorus is removed efficient and is improved.

In addition, the present invention also can specialize in the following manner.

The example that uses electrolyzer C as sewage treatment tank has been shown in this form of implementation, but also can be embodied as other grooves such as contacting quick-fried air drain.

In addition, in the electrolyzer C of this form of implementation, show the example that along continuous straight runs is provided with sewage outlet pipe 11, but be not limited to this.For example, also can hold up upward, offer peristome, below electrolyzer C, draw at suitable height from following.

In addition, in the electrolyzer C of this form of implementation, show the structure of being arranged to two row as electrode device row 5, but be not particularly limited to this, can adopt row electrode device row 5, in addition, also can be to use the small-scale structure of an electrode.

In addition, air bell 25 also is not limited to a plurality of systems (is two systems in this occasion) of this form of implementation, also can be a system.For example, in this form of implementation, also can set the air bell 25 of two systems in the bottom of each electrode device row 5, still, these air bells 25 are connected with shared gas blower 80, become the air bell of a system and constitute.

In addition, in this form of implementation, use iron material, still, be not limited to this, also can use other metal that to separate out with the metal ion of phosphate ion reaction, for example aluminium etc. as electrode.

Because the present invention has adopted above formation, therefore can reach following effect.

According to the 1st～5 invention of the present invention, can reduce the height of groove, make the groove miniaturization. In addition, Can dwindle the connection that is connected with sewage inflow pipe and join the space of pipe. In addition, can prevent that sewage is from connecting The connection section of joining pipe directly drains to the outside of groove.

In addition, according to the 2nd invention of the present invention, can freely select to flow into the company that pipe is connected with sewage Connect the horizontal direction of joining pipe towards, therefore meet peace by the groove that makes sewage flow into pipe and front operation The dress condition connects, thereby can further reduce connection space.

In addition, according to the 3rd invention of the present invention, be connected owing to can freely select to flow into pipe with sewage The connection horizontal direction of joining pipe towards and connect height and position, therefore by make sewage flow into pipe with The groove of front operation meets mounting condition and connects, thereby can further reduce connection space.

In addition, according to the 4th invention of the present invention, because sewage can directly not drain to the outside of groove, Therefore, can prevent from being configured in the parts of electric such as the supply unit of electrolysis bath circumference and control dish is flooded.

In addition, according to the 5th invention of the present invention, disperseed by framework owing to flow into the interior sewage of groove, Thereby the phosphorus catch rate that the metal ion of being separated out by electrode assembly produces is in the electrode assembly of each one Homogenising, phosphorus are removed efficient and are improved.

Claims

1, a kind of sewage treatment tank, comprise the sewage inflow pipe that makes the sewage inflow and make the effusive sewage outlet pipe of sewage, described sewage inflow pipe is arranged to import in the downward square groove structure of sewage above sewage treatment tank one side, described sewage inflow pipe is installed on the sewage treatment tank, and described sewage inflow pipe is free to rotate in the horizontal direction with respect to sewage treatment tank with the outside tubing connection portion that is connected.

2, sewage treatment tank according to claim 1, it is characterized in that, described sewage inflow pipe by the top flanged pipe arrangement that is vertically mounted on groove, be installed in the straight tube on this flanged pipe arrangement and be installed in 90 on straight tube degree coupling bend and constitute, but described 90 degree coupling bends serve as that an axle along continuous straight runs rotates freely with this straight tube.

3, sewage treatment tank according to claim 2 is characterized in that, this sewage treatment tank is the electrolysis treatment groove, and this electrolysis treatment groove has the air bell at least one electrode that is made of the pair of electrodes plate and the bottom sewage that is provided in this electrode.

4, sewage treatment tank according to claim 3, it is characterized in that, described electrolyzer is provided with the sewage outlet pipe in the side with the face-off of sewage inflow pipe, simultaneously below described sewage inflow pipe, has framework, this framework makes the effluent stream that flows in the groove produce impact, and, described electrode adopt with groove in set the structure of a plurality of electrode devicies that constitute by the pair of plate-shaped electrode on the vertical direction of effluent stream.