CN201347374Y - Wastewater treatment apparatus - Google Patents
Wastewater treatment apparatus Download PDFInfo
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- CN201347374Y CN201347374Y CNU2009200513187U CN200920051318U CN201347374Y CN 201347374 Y CN201347374 Y CN 201347374Y CN U2009200513187 U CNU2009200513187 U CN U2009200513187U CN 200920051318 U CN200920051318 U CN 200920051318U CN 201347374 Y CN201347374 Y CN 201347374Y
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Abstract
The utility model provides a wastewater treatment apparatus, which comprises an electrolysis reaction chamber, and an electrolysis electrode switching circuit, an electrolyte supplementing circuit and a timing blow-down circuit connected with corresponding pins of a miniature chip, wherein, the electrolysis reaction chamber is divided into a waste residue collecting region, a waste water distribution region, and an electrolysis reacting region, a blow-down electromagnetic valve is arranged on the sewage outlet of the waste residue collecting region, a waste water distribution pipe and a conductance determination inductor are placed in the waste water distribution region, the waste water distribution pipe is connected with an overflow taper pipe, a waste water inlet, an overflow port and an electrolyte supplementing port are formed on the overflow taper pipe, a plurality of pairs of electrode groups are placed in the electrolysis reacting region, the electrolysis electrode switching circuit enables currents among metal electrodes of the electrode groups to shift flow direction regularly, and a water outlet collector is arranged above the electrolysis reacting region. The apparatus has the characteristics of high technology, compact equipment, convenient and safe use, good sewage treatment effect, and low running cost. Waste water treated by the utility model meets the waste water discharge requirements of environmental protection.
Description
[technical field]
The present invention relates to a kind of technical field of waste water processing, relate in particular to electrostatic double layer, make it that poly-and device that precipitation is removed of crosslinked wadding takes place with band reversed charge ion damaged dissolved ions or suspended substance.
[background technology]
Present wastewater processing technology comprises biological treatment, physical treatment, and chemical treatment and physical chemistry are handled.The present invention belongs to physical chemistry to handle category.Galvanic current is passed through metal electrode board, as metal sheet oxidized generation metal ion after energising of negative electrode.Newborn ion generation hydrolysis and generate the metal hydroxides of a series of different valence state.Depend on different pH value of solution, intrasystem metal hydroxides exists with the ion pattern of different valence state.Such as when using aluminium as electrode:
Al
+3+H
2O→Al(OH)
+2+H
+
Al(OH)
+2+H
2O→Al(OH)
++H
+
Al(OH)
++H
2O→Al(OH)
3+H
+
Al(OH)
3+H
2O→Al(OH)
4 -1+H
+
Along with aluminium ion concentration increases, multinuclear ion complex body just can occur:
Al
+3→Al(OH)
n (3-n)→Al
2(OH)
2 4+→Al
3(OH)
4 5+→Al
13(O)
4(OH)
24 7+
Pollutent in the water, such as heavy metal ion, organic and inorganic colloidal particle, generally itself all has electric charge.Repulsion between charged particle can stably be suspended in the liquid them.Stable colloidal dispersion can be destroyed by the solion that adds oppositely charged.This is because the electrostatic double layer of fine particle can be destroyed by the ionogen of oppositely charged, makes tiny colloid be cross-linked with each other and becomes macrobead and the coagulation of wadding a quilt with cotton forms sediment, and remove by filtration.
On anode metal plate, water can generate hydrogen and hydroxide ion because of electrolysis:
H
2O+e→OH
-1+H
2
If there is hydrogen ion to exist in the system, such as at acid range, then can be neutralized and makes the pH of waste water bring up to neutrality, thereby eliminate the acid pollution of sewage.
Because the electrochemical flocculation wastewater processing technology is effectively reliable, stable equipment operation, and in treating processes, generally do not need to add any other chemical agent, be a kind of up-and-coming sewage treatment equipment.Chinese patent CN200620117559.3. communique the energy-conservation electrochemical waste water treatment device of a kind of full automatic high efficiency.It is anode that this rectangle slot type electrolytic waste water treatment equipment is selected inert material graphite for use, and plain carbon stool is a negative electrode; Adopt very little distance between the positive and negative pole plate, 20mm is only arranged.Although this device has been realized the microbattery principle is applied to electrolytic process, improved the processing efficiency height, fixed negative electrode steel plate makes the equipment work instability in electrolysis working process meeting passivation.In addition, this device adopts the discontinuous processing mode, is not suitable for big flow successive wastewater treatment occasion.Chinese patent CN02205209 has introduced the rolling circle cartridge type device that utilizes similar electrochemical flocculation principle design.Equipment although it is so also has certain treatment effect, but electrode and power supply are to link by carbon brush, easily wearing and tearing; And join together as the steel plate and the cylinder of negative electrode, when negative electrode needed to change owing to loss, very trouble became.
[summary of the invention]
The objective of the invention is to overcome the deficiencies in the prior art, provide a kind of safe in utilization and stable, clean effect is good, production cost is low, the wastewater treatment equipment of compliance with environmental protection requirements.
In order to solve the technical problem of above-mentioned existence, the present invention adopts following technical proposals:
A kind of wastewater treatment equipment, it includes the electrolytic reaction chamber, and the electrolysis electrode switching circuit that is connected with the corresponding pin of microchip, ionogen supplementary circuitry and blowdown circuit regularly, described electrolytic reaction chamber is divided between the waste residue collecting region from lower to upper successively, waste water distributed area and electrolytic reaction interval; Wherein:
Be provided with the blowdown magnetic valve on the sewage draining exit of lowermost end between described waste residue collecting region, described blowdown magnetic valve is controlled by timing blowdown circuit;
In described waste water distributed area, be placed with the waste water distribution pipe that several horizontal intervals distribute, in described waste water distributed area, be provided with the mensuration electricity that the electricity that is used for monitoring waste water leads and lead inductor block; Described waste water distribution pipe be used for realizing that waste water is at the identical Overflow Cone pipe coupling of the vertical flow velocity of waste water distributed area, be provided with waste water mouth into, overflow port and replenished mouthful by the ionogen of ionogen solenoid control on described overflow Taper Pipe, described ionogen magnetic valve is by this ionogen supplementary circuitry control; The described electricity of measuring is led electric conductivity value that inductor block measures and the reference electricity in the reference solution and is led the work that reference electric conductivity value that inductor block measures was controlled the ionogen supplementary circuitry more afterwards;
Be placed with some electrode groups to vertical parallel distribution in described electrolytic reaction interval, the current direction between the metal polar plate of each counter electrode group is regularly switched by the electrolysis electrode switching circuit; Above described electrolytic reaction interval, be provided with effluent collector.
In the improvement project to above-mentioned wastewater treatment equipment, described effluent collector includes the overflow tank and the header that is connected with this overflow tank of a plurality of horizontal distribution, and an end of described header is provided with water outlet.
In improvement project to above-mentioned wastewater treatment equipment, described overflow Taper Pipe be three faces to be trapezoidal, other one side be orthogonal overflow side Taper Pipe, the rectangular surfaces of described overflow side Taper Pipe is connected with the waste water distribution pipe; Described water-in is located at the maximum end of overflow side's Taper Pipe, and described overflow port is located at the smallest end of overflow side's Taper Pipe.
In the improvement project to above-mentioned wastewater treatment equipment, the effluent segregation pipe at described waste water distributed area place is divided at least one group, and every group of waste water distribution pipe is made up of 20%, 50% and 70% the distribution pipe that three length are respectively the reaction chamber depth degree of depth.
In the improvement project to above-mentioned wastewater treatment equipment, the interval between the two adjacent overflow tanks can just ccontaining pair of electrodes group wherein.
In the improvement project to above-mentioned wastewater treatment equipment, all electrode groups all are fixed on the integral body of one-tenth for ease of picking and placeing on the reaction chamber cover plate by gusset.
In the improvement project to above-mentioned wastewater treatment equipment, described waste water distribution pipe is the plastics tubing which is provided with a lot of apertures.
In improvement project to above-mentioned wastewater treatment equipment, described electrolysis electrode switching circuit includes by two triodes and two bridge circuits that rly. is formed, one pin RB2 of described chip is connected with the base stage of triode G3 through resistance R 5, diode D5 successively, the grounded emitter of triode G3, collector electrode is connected with the 5V volts DS after resistance R 7 on the one hand, is connected with the working power of electrode group through relay R EL3 on the other hand; One pin RB7 of described chip is connected with the base stage of triode G4 through resistance R 6, diode D6 successively, the grounded emitter of triode G4, collector electrode is connected with the 5V volts DS after resistance R 8 on the one hand, is connected with the working power of electrode group through relay R EL4 on the other hand.
In improvement project to above-mentioned wastewater treatment equipment, described ionogen supplementary circuitry includes triode G2 and relay R EL2, one pin RB1 of microchip is connected with the base stage of triode G2 through resistance R 1, diode D1 successively, the collector electrode of triode G2 comes relay REL2 by resistance R 2, the grounded emitter of triode G2.
In improvement project to above-mentioned wastewater treatment equipment, described timing blowdown circuit includes triode G1 and relay R EL1, one pin RB0 of chip is connected with the base stage of triode G1 through resistance R 3, diode D4 successively, the grounded emitter of triode G1, collector electrode comes relay REL1 by resistance R 4, and relay R EL1 controls the work of blowdown magnetic valve again.
Compared with prior art, the invention has the beneficial effects as follows: 1), owing to have roughly the same flow velocity along the longitudinal in that entire reaction is indoor when it guarantees that by Overflow Cone card waste water flows into, so that all waste water is in the residence time of electrolytic reaction chamber unanimity, after waste water enters reaction chamber simultaneously, owing to the sectional area of runner increases flow velocity is reduced, make the mobile Reynold's number less than 2300, become Laminar Flow, reduce the waste water mobile velocity contrast that makes progress, can make all waste water in the reaction chamber all can be subjected to the electrochemical flocculation processing and decontamination like this, thereby reach good clean effect, the complete compliance with environmental protection requirements of water after the wherethrough reason; 2) simultaneously, because the current direction between the pole plate (negative electrode or anode) of each counter electrode group of the present invention is regularly switched by the electrolysis electrode switching circuit, can avoid negative plate to make the equipment work instability like this in the generation passivation of electrolysis working process, so it is of the present invention safe in utilization and stable, and electrolysis can be carried out under low voltage, both guaranteed the safe and reliable of product, and significantly reduced energy consumption again, order is produced and use cost reduces; 3), in the preferable embodiment of the present invention, because it is by at least one group that waste water flows into reaction chamber, every group of waste water distribution pipe is respectively 20% of the reaction chamber depth degree of depth by three length, 50% and 70% distribution pipe is formed, can further make like this speed that the waste water of the same section of reaction chamber flows to the electrolytic reaction interval more residence time of making peace identical, so can carry out electrolysis treatment to whole waste water, thereby play better clean effect.
The present invention is described in further detail below in conjunction with accompanying drawing and embodiment:
[description of drawings]
Fig. 1 is the structural representation of the embodiment of the invention;
Fig. 2 is the partial enlarged drawing I figure of Fig. 1;
Fig. 3 is that the A-A of Fig. 1 is to sectional view;
Fig. 4 is that the B-B of Fig. 1 is to sectional view;
Fig. 5 be overflow Taper Pipe of the present invention at C shown in Figure 1 to pairing synoptic diagram;
Fig. 6 is the schematic circuit diagram of the embodiment of the invention;
Fig. 7 is the circuit connection diagram of the embodiment of the invention.
[embodiment]
The present invention is a kind of wastewater treatment equipment, it includes electrolytic reaction chamber 1, and the electrolysis electrode switching circuit 30 that is connected with the corresponding pin of microchip 3, ionogen supplementary circuitry 40 and blowdown circuit 50 regularly, described electrolytic reaction chamber 1 is divided between the waste residue collecting region 11 from lower to upper successively, waste water distributed area 12 and electrolytic reaction interval 13; Wherein be provided with blowdown magnetic valve 2 on the sewage draining exit 111 of 11 lowermost ends between described waste residue collecting region, described blowdown magnetic valve 2 is by 50 controls of timing blowdown circuit.
In described waste water distributed area 12, be placed with the waste water distribution pipe 4 that several horizontal intervals distribute, in described waste water distributed area 12, be provided with and be used for monitoring the mensuration electricity that the electricity in the waste water leads and lead inductor block S1; Described waste water distribution pipe 4 connects at the identical overflow Taper Pipe 6 of the vertical flow velocity of waste water distributed area with being used for realizing waste water, be provided with waste water mouth 61 into, overflow port 63 and replenish mouthfuls 62 by the ionogen of ionogen magnetic valve 7 controls on described overflow Taper Pipe 6, described ionogen magnetic valve 7 is by these ionogen supplementary circuitry 40 controls; The described electricity of measuring is led electric conductivity value that inductor block S1 measured and the reference electricity in the reference solution and is led the work that reference electric conductivity value that inductor block S2 measured was controlled ionogen supplementary circuitry 40 more afterwards.Overflow Taper Pipe wake flow generally keeps 1 to 20%, or 5 to 15%, or 10% overflow refluxes through overflow port 63.The use of overflow Taper Pipe 4 is to have roughly the same flow velocity along the longitudinal in that entire reaction is indoor when guaranteeing that waste water flows into, so that all waste water is in the residence time of electrolytic reaction chamber unanimity, after waste water enters reaction chamber simultaneously, owing to the sectional area of runner increases flow velocity is reduced, make the mobile Reynold's number less than 2300, become Laminar Flow, reduce the waste water mobile velocity contrast that makes progress, can make all waste water in the reaction chamber all can be subjected to the electrochemical flocculation processing and decontamination like this, thereby reach good clean effect, the complete compliance with environmental protection requirements of water after the wherethrough reason.
Be placed with many electrode groups 8 in 13 to vertical parallel distribution in described electrolytic reaction district, current direction between the pole plate of each counter electrode group 8 (negative electrode or anode) is regularly switched by electrolysis electrode switching circuit 30, can avoid the cathodic metal plate to make the equipment work instability like this in the generation passivation of electrolysis working process, so work safety of the present invention and stable, and electrolysis can be carried out under low voltage, both guaranteed the safe and reliable of product, significantly reduced energy consumption again, order is produced and use cost reduces; Because the positive and negative of electrode is to flow to decision by the working current that is applied between the electrode group, and the flow direction of working current is controlled by switching circuit.According to the characteristic of different waste water, the switching interval of the flow direction of working current can be controlled by the working procedure that changes chip, can be 1 to 30 minute, can be 5 to 15 minutes, or more typical be 6 to 8 minutes.
Be provided with the effluent collector 9 that the water after handling is discharged above the described electrolytic reaction interval 13, in the present embodiment, described effluent collector 9 includes several horizontal distribution, by plastic material the overflow tank 91 that constitutes and two headers 92 that are connected with these overflow tank 91 two ends, an end of described header 92 is provided with water outlet 921.All overflow tanks and are parallel to each other all on a horizontal plane.Horizontally disposed overflow tank provides overflow ducts highly consistent on the reaction chamber cross section, further reduces the cross-flow of waste water mobile, guarantees the unanimity of waste water in the indoor residence time.
Principle of work of the present invention is such: waste water is input to electrolytic reaction chamber 1, makes waste water roughly the same in the indoor residence time.The metal hydroxides that pollutants in waste water and electrolysis produce is cross-linked to form the poly-throw out of wadding.The poly-throw out of these waddings is discharged the electrolytic reaction chamber in three kinds of modes, and the one, because the air supporting that the hydrogen that produces on the anode forms is done to be taken out of by current in order to the form of floating matter; The 2nd, be entrained in the current with the form of suspended substance and flow out; The 3rd, sink between the waste residue collecting region in 11 with insoluble sedimentary form and to discharge by regular discharge.The water of discharging from header 92 becomes water purification after removing wherein the poly-throw out of wadding more after filtration after treatment, can discharge or be back to use and go in the Production Flow Chart to recycle.The hydroxide ion that electrolysis produces can react with metal ion on the one hand, produces metal hydroxides, on the other hand can in and the acid in the waste water, its pH is raise becomes neutrality; And the hydrogen that electrolysis produces, its floating-upward process can produce disturbance at electrode surface on the one hand, reduces the concentration overpotential of electrode, and form simultaneously the air supporting effect partly the poly-throw out of wadding floatingly select liquid level.By the switching circuit that programmable chip is controlled electrolytic reaction chamber current polarity is done regularly to switch, the anodic-cathodic of every counter electrode group of tank room is alternately rotated, reduce the passivation of electrolytic reaction process electrode; In addition, measure electricity lead electricity that inductor block S1, reference electricity lead inductor block S2 and 40 pairs of inflow reaction chambers of ionogen supplementary circuitry waste water lead detect, symmetry and replenish regulation and control, the waste water electricity is led maintains 20mS.m
-2More than, make electrochemical flocculation under 3 to 5 volts low voltage, to carry out; The regularly also discharging of timing control electrolytic reaction chamber precipitating sludge of blowdown circuit 50.The present invention is less energy consumption when work, processing ease and safety, and with the prior art ratio, it is with high content of technology, and floor space is little, and investment running cost is low, the contaminant removal efficiency height.
The present invention is when work: waste water to be processed is introduced into overflow Taper Pipe 6, makes the hydraulic pressure and the flow velocity that enter into each waste water distribution pipe 4 roughly the same after the effect by overflow Taper Pipe 6; Like this, the waste water at place, same horizontal section upwards flows into electrolytic reaction interval 13 evenly, each counter electrode group 8 that the vertical parallel that is covered with in this interval distributes produces metal ion on negative electrode after energising, the metal ion of hydrolysis becomes monokaryon and multinuclear metal hydroxides.These oxyhydroxide have very strong wadding cumulative power, can generate the wadding polymers with pollutants in waste water generation co-precipitation.These pollute the top that a part of air supporting effect owing to the hydrogen formation that produces on the anode of wadding polymers swims in reaction chamber, enter overflow tank 91 backs and discharge from header 92; A part of form with suspended substance is entrained in and enters the overflow tank in the current and take out of from header 92; Also some becomes between the waste residue collecting region that indissoluble is deposited on electrolytic reaction chamber bottom in 11, and controls blowdown magnetic valve 2 regular workings by 3 predefined blowing times of microchip, thereby regularly discharges between the waste residue collecting region waste residue in 11.After work for some time,, electrolysis electrode switching circuit 30 is oppositely connected made the electrode group conversion sense of current, thereby regularly switch the polarity of electrode group according to predefined program in the microchip 3.Meanwhile, measuring electricity leads the waste water electricity that inductor block S1 also constantly detects in the waste water distributed area 12 and leads, and with the outer reference solution of reaction chamber in the reference electricity lead reference electric conductivity value that inductor block S2 measured relatively after, control ionogen supplementary circuitry 40 by microchip 3 and whether work, make and open ionogen after the 7 energising work of ionogen magnetic valve and replenish mouthfuls 62 and come electrolyte supplement.
For electrochemical flocculation equipment is carried out under low voltage, need the electricity of waste water to lead at 18mS.m
-1To 20mS.m
-1Between.For the electricity of monitoring waste water is led, so being installed, the mensuration electricity of conductivity meter leads inductor block S1 in the waste water at waste water distributed area place, the output signal of conductivity meter is added in the I/O interface at miniature core place 3.Be lower than set(ting)value in case the electricity of waste water is led, microchip sends instruction at once makes 40 work of ionogen supplementary circuitry open ionogen magnetic valve 7, replenishes mouthful 61 interpolation ionogen from ionogen and leads with the electricity that improves waste water.As shown in Figure 6, measure an electric end of leading inductor block S1 and be connected with the RDO pin of microchip 3, the other end is through electric capacity f3 ground connection; The end that the reference electricity that is arranged in reference solution is led inductor block S2 is connected with a pin RD1 of microchip, and the other end is through electric capacity f4 ground connection; Ionogen supplementary circuitry 40 includes triode G2 and relay R EL2, one pin RB1 of microchip is connected with the base stage of triode G2 through resistance R 1, diode D1 successively, the electrical signal that the collector electrode of triode G2 amplifies by resistance R 2 outputs comes relay REL2, the grounded emitter of triode G2.In the present embodiment, at first electricity consumption is led less than 7mS.m
-1The aqueous solution and electricity lead and be 300mS.m
-1Salt solution determine suitable electric capacity F3 and F4, the scope of make measuring can comprise 7 to 300mS.m
-1To measure electricity then and lead inductor block S1 and the reference electricity is led the RD0 that inductor block S2 receives microchip 3 respectively, the RD1 pin moves the scale program respectively and determines their scale factor.The reference electricity is led inductor block S2 to be placed electricity to lead to be 20mS.m
-1Reference solution in lead as the reference electricity, will measure electricity and lead inductor block S1 and place electrolysis indoor measurement waste water electricity to lead.Working procedure in the chip can constantly compare these two values, and determines according to the difference size whether the RB1 pin becomes noble potential (HIGH).If the waste water electricity is led and is lower than the reference electricity and leads, chip RB1 pin is high, the base stage of triode G2 is sensed signal and is amplified, output to REL2 by resistance R 2, make slide bar receive the NO point from the NC point, thereby connect step motor and open ionogen magnetic valve 7 switches, open the ionogen hold-up vessel and replenish mouthful 62 interpolation ionogen, lead to improve the waste water electricity from ionogen.
According to the trial run experience, determine between the waste residue collecting region timed interval of 11 blowdown, control suitable blowing time by the working procedure that changes microchip.In case blowing time arrives, chip just can send instruction unlatching blowdown magnetic valve 2 and carry out blowdown operation.Regularly blowdown circuit 50 includes triode G1 and relay R EL1, one pin RB0 of chip is connected with the base stage of triode G1 through resistance R 3, diode D4 successively, the grounded emitter of triode G1, the electrical signal that collector electrode has amplified by resistance R 4 output comes relay REL1, and relay R EL1 controls 2 work of blowdown magnetic valve again.In use, be determined by experiment the time that needs discharging mud in advance.This time is input in the working procedure of chip.Time one arrives, and the RB0 pin of chip high (HIGH), triode G1 amplify signal and be added on the REL1 by resistance R 4 outputs, make slide bar receive the NO point from NC point, and blowdown magnetic valve 2 is switched on and opened sewage draining valve mud is discharged like this.After through the time of setting mud having been arranged, chip makes RB0 be returned to virgin state, triode G1 loss signal, and the REL1 slide bar is got back to the NC state, and blowdown magnetic valve 2 cuts out, and finishes the blowdown process.
Electrolysis electrode switching circuit 30 includes by triode G3, G4 and relay R EL3, the bridge circuit that REL4 forms, one pin RB2 of its chips is connected with the base stage of triode G3 through resistance R 5, diode D5 successively, the grounded emitter of triode G3, collector electrode is connected with the 5V volts DS after resistance R 7 on the one hand, is connected with the working power of electrode group through relay R EL3 on the other hand; Similarly, one pin RB7 of chip is connected with the base stage of triode G4 through resistance R 6, diode D6 successively, the grounded emitter of triode G4, collector electrode are connected with the 5V volts DS after resistance R 8 on the one hand, are connected with the working power of electrode group through relay R EL4 on the other hand.Circuit is when original state, and the electrolysis electrode of electrode group all is connected on the negative pole of working power, and pull up circuit is in off-state.When microchip 3 programs bring into operation, make the RB2 pin of chip be in high-voltage state (HIGH), the output of 5V d. c. voltage signal is arranged, and be added on the base stage of triode G3 by resistance R 5 and diode D5, make triode G3 conducting, after its collector electrode amplifies, export and be added on the relay R EL3 by resistance R 7, so just, make the connection slide bar of REL3 receive the NO contact from the NC contact, the relay R EL3 connection of switching on, the dc electrolysis electric current of working power successively through relay R EL3, electrode group two metal electrodes 81, relay R EL4 after get back to negative pole.When program run during to switching time that chip sets, chip RB2 pin becomes low-voltage state (LOW), and triode G3 base stage loses input, and the connection slide bar of REL3 is returned to the NC contact, and the electrolysis pull up circuit disconnects; Then, chip program continues operation, and make the RB7 pin be in high-voltage state (HIGH), 5 volts of d. c. voltage signal outputs are arranged, and be added on the base stage of triode G4 by resistance R 6 and diode D6, make triode G4 conducting, after its collector electrode amplifies, export and be added on the relay R EL4 by resistance R 8, so just, make the connection slide bar of relay R EL4 receive the NO contact from the NC contact, the relay R EL4 connection of switching on, so the dc electrolysis electric current of working power is through relay R EL4 successively, the electrode group two metal electrodes 81, get back to negative pole behind the relay R EL3, just fallen to come with the galvanic current direction that is added in before on the electrolysis electrode, thus the switching of the current direction of two metal electrodes 81 of realization electrode group.After chip had run to setting-up time, RB7 became virgin state again again, made electrolytic circuit disconnect.And then RB2 becomes high-voltage state again, makes the electrolysis pull up circuit to connect in the other direction, and so circulation reaches the purpose of regularly switching polarity of electrode.The switching of the current direction by the electrode group makes two metal electrodes of electrode group equal chance all be arranged as male or female, thereby can avoid the cathodic metal plate to make the unsettled situation of equipment work in the generation passivation of electrolysis working process.
Be to improve the water treatment effect of electrolytic reaction chamber, make the interval between adjacent two overflow tanks of making by plastic material 91 can just ccontaining pair of electrodes group 8 wherein usually.In the present embodiment, all electrode groups 8 all are fixed on the integral body of one-tenth for ease of picking and placeing on the reaction chamber cover plate of being made by plastic material 20 by gusset 10.The cover plate 20 of battery lead plate and electrolytic reaction chamber is made an integral body, can whole old electrodes be hung out by cover plate when changing electrode, the new electrode that will assemble is in advance again loaded onto and is got final product.The shell of electrolytic reaction chamber 1 generally is made of plastic plate.Each piece metal electrode of indoor electrode group 8 is made up of the metal plate of 1500X1000X3 millimeter, and they generally are metals of the same race, can be steel plate, also can be aluminium sheet etc.Distance between the metal sheet of electrode group 8 is approximately 16 millimeters, and their long limit is fixed on the plastic plate lid 20 by gusset 10 by screw, forms the electrode of vertical parallel each other, as shown in Figure 1, 2.
The overflow Taper Pipe is to be used for realizing that waste water is at the identical long strip shape pipe of the vertical flow velocity of waste water distributed area, because it is in the hydraulic pressure maximum of water inlet, hydraulic pressure away from water-in is more little more, so it is made taper, design the cross section of water inlet to such an extent that reduce the pressure and the water speed of this place's waste water more greatly, and away from water-in cross section design smaller hydraulic pressure and the water speed that suitably increases this place's waste water, thereby make whole piece overflow Taper Pipe flow to the hydraulic pressure of whole waste water distribution pipes of parallel distribution and water speed evenly.In the present embodiment, shown in Fig. 5,6 embodiment, described overflow Taper Pipe be three faces to be trapezoidal, other one side be orthogonal overflow side Taper Pipe, the rectangular surfaces of described overflow side Taper Pipe is connected with the effluent segregation pipe; Described water-in 61 is located at the maximum end of overflow side's Taper Pipe, and described overflow port 63 is located at the smallest end of overflow side's Taper Pipe.Certainly, the overflow Taper Pipe also can be rounded or arcual conical tube in cross section etc.The ratio of water-in and water outlet cross-sectional area makes that the water inlet flow velocity is identical with the overflow flow velocity, and keep a certain proportion of waste water to reflux through overflow port 63, the reflux ratio of waste water generally between 1% to 20%, can guarantee further that like this waste water enters into effluent segregation pipe 4 by essentially identical flow velocity.
Waste water distribution pipe 4 is normally made with the plastics tubing etc. that is provided with a lot of apertures.The waste water distribution pipe at waste water distributed area place is divided at least one group, every group of waste water distribution pipe is respectively 20% of reaction chamber depth depth D by three length, 50% and 70% distribution pipe is formed, the speed one that can as far as possible make the waste water of the same section of reaction chamber flow to electrolytic reaction interval 13 like this residence time of making peace is identical, thereby plays better clean effect.Shown in Fig. 1,4, four groups of effluent segregation pipes are arranged.
Microchip 3 is PIC18F4550 in the present embodiment, and certainly, it also can be other model.
Illustrate water treatment effect of the present invention below:
Example 1: a kind of electroplating wastewater that contains 6 valency chromium is handled.6 valency chromium content of raw wastewater are 0.61ppm, and pH is 1.3, COD 162ppm, and electricity is led 23mS.cm
-1Voltage is 3 volts during device processes, and current density is 50A.m
2, not adding ionogen, retention time of sewage is 10 minutes.Processed waste water pH is 5.8, and COD is 69ppm, and 6 valency chromium content are 0.00ppm, and electricity is led and is 22mS.cm
-1
Example 2: a kind of Treating Electroplate Wastewater Containing Nickel is handled.The nickel content of raw wastewater is 0.29ppm, pH1.5, and COD 220ppm, electricity is led 25mS.cm
-1Operating voltage is 3 volts during wastewater treatment, and working current density is 50A.m
2, working current polarity switching time is 7 minutes, retention time of sewage is 10 minutes.Processed waste water nickel content is 0.00ppm, and pH is 7.8, and COD is 170ppm, and electricity is led 24mS.cm
-1
Example 3: a kind of bleaching and dyeing wastewater that contains matching stain is handled.Raw wastewater COD content 1200ppm, dyestuff content (by absorption measurement) 189ppm to 518 nano wave lengths, pH 5.3, and electricity is led 35mS.cm
-1Operating voltage is 3 volts during wastewater treatment, and working current density is 50A.m
2, working current polarity switching time is 10 minutes, retention time of sewage is 10 minutes.Processed waste water COD content is 513ppm, dyestuff content 6.2ppm, and pH is 7.5, electricity is led 30mS.cm
-1, dyestuff clearance 96.7%.
Can find out that from top three examples clean effect of the present invention is good, production cost is low, the water after the wherethrough reason meets the environmental protection demand fully.
Claims (10)
1, a kind of wastewater treatment equipment, it is characterized in that including electrolytic reaction chamber (1), and the electrolysis electrode switching circuit (30) that is connected with the corresponding pin of microchip (3), ionogen supplementary circuitry (40) and timing blowdown circuit (50), described electrolytic reaction chamber (1) is divided into (11) between the waste residue collecting region, waste water distributed area (12) and electrolytic reaction interval (13) from lower to upper successively; Wherein
Be provided with blowdown magnetic valve (2) on the sewage draining exit (111) of (11) lowermost end between described waste residue collecting region, described blowdown magnetic valve (2) is controlled by timing blowdown circuit (50);
In described waste water distributed area (12), be placed with the waste water distribution pipe (4) that several horizontal intervals distribute, in described waste water distributed area (12), be provided with the mensuration electricity that the electricity that is used for monitoring waste water leads and lead inductor block (S1); Described waste water distribution pipe (4) connects at the identical overflow Taper Pipe (6) of the vertical flow velocity of waste water distributed area with being used for realizing waste water, be provided with waste water mouth (61) into, overflow port (63) and replenish mouthful (62) by the ionogen of ionogen magnetic valve (7) control on described overflow Taper Pipe (6), described ionogen magnetic valve (7) is by this ionogen supplementary circuitry (40) control; Described mensuration electricity is led electric conductivity value that inductor block (S1) measured and the reference electricity in the reference solution and is led inductor block (S2) the reference electric conductivity value of being measured and controlled the work of ionogen supplementary circuitry (40) more afterwards;
Be placed with some electrode groups (8) to vertical parallel distribution in described electrolytic reaction interval (13), the current direction between the metal electrode (81) of each counter electrode group (8) is regularly switched by electrolysis electrode switching circuit (30); Be provided with effluent collector (9) in the top in described electrolytic reaction interval (13).
2, wastewater treatment equipment according to claim 1, it is characterized in that: described effluent collector (9) includes the overflow tank (91) and the header (92) that is connected with this overflow tank (91) of a plurality of horizontal distribution, and an end of described header (92) is provided with water outlet 921.
3, wastewater treatment equipment according to claim 2 is characterized in that: described overflow Taper Pipe (6) be three faces to be trapezoidal, other one side be orthogonal overflow side Taper Pipe, the rectangular surfaces of described overflow side Taper Pipe is connected with the waste water distribution pipe; Described water-in (61) is located at the maximum end of overflow side's Taper Pipe, and described overflow port (63) is located at the smallest end of overflow side's Taper Pipe.
4, wastewater treatment equipment according to claim 3, it is characterized in that: the effluent segregation pipe of locating at described waste water distributed area (12) (4) is divided at least one group, every group of waste water distribution pipe is made up of 20%, 50% and 70% the distribution pipe that three length are respectively the reaction chamber depth degree of depth (D).
5, according to claim 2 or 3 or 4 described wastewater treatment equipments, it is characterized in that: the interval between the two adjacent overflow tanks (91) can just ccontaining pair of electrodes group (8) wherein.
6, wastewater treatment equipment according to claim 5 is characterized in that: all electrode groups (8) all are fixed on the integral body that becomes on the reaction chamber cover plate (20) for ease of picking and placeing by gusset (10).
7, wastewater treatment equipment according to claim 6 is characterized in that: described waste water distribution pipe (4) is for which is provided with the plastics tubing of a lot of apertures.
8, according to claim 1,2,3 or 4 described wastewater treatment equipments, it is characterized in that: described electrolysis electrode switching circuit (30) includes by triode (G3), (G4) and rly. (REL3), (REL4) bridge circuit of Zu Chenging, one pin (RB2) of described microchip (3) is connected with the base stage of triode (G3) through resistance (R5), diode (D5) successively, the grounded emitter of triode (G3), collector electrode is connected with the 5V volts DS behind resistance (R7) on the one hand, is connected with the working power of electrode group through rly. (REL3) on the other hand; One pin (RB7) of described chip is connected with the base stage of triode (G4) through resistance (R6), diode (D6) successively, the grounded emitter of triode (G4), collector electrode is connected with the 5V volts DS behind resistance (R8) on the one hand, is connected with the working power of electrode group through rly. (REL4) on the other hand.
9, according to claim 1,2,3 or 4 described wastewater treatment equipments, it is characterized in that: described ionogen supplementary circuitry (40) includes triode (G2) and rly. (REL2), one pin (RB1) of microchip is connected with the base stage of triode (G2) through resistance (R1), diode (D1) successively, the collector electrode of triode (G2) comes relay (REL2) by resistance (R2), the grounded emitter of triode (G2).
10, according to claim 1,2,3 or 4 described wastewater treatment equipments, it is characterized in that: described timing blowdown circuit (50) includes triode (G1) and rly. (REL1), one pin (RB0) of chip is connected with the base stage of triode (G1) through resistance (R3), diode (D4) successively, the grounded emitter of triode (G1), collector electrode comes relay (REL1) by resistance (R4), and rly. (REL1) is controlled the work of blowdown magnetic valve (2) again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200513187U CN201347374Y (en) | 2009-02-12 | 2009-02-12 | Wastewater treatment apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200513187U CN201347374Y (en) | 2009-02-12 | 2009-02-12 | Wastewater treatment apparatus |
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| CN201347374Y true CN201347374Y (en) | 2009-11-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173483A (en) * | 2011-03-28 | 2011-09-07 | 常州宇众超导科技有限公司 | Wastewater electrochemical treatment device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173483A (en) * | 2011-03-28 | 2011-09-07 | 常州宇众超导科技有限公司 | Wastewater electrochemical treatment device |
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Granted publication date: 20091118 Termination date: 20110212 |