A kind of sampling detecting device for printing and dyeing wastewater treatment system
Technical field
The invention belongs to sewage treatment area, particularly relate to a kind of checkout equipment for Dyeing disposal system.
Background technology
China is that maximum in the world fabric clothing is produced and exported country, therefore dyeing is closely bound up with it, and being China, the discharge of wastewater of dyeing causes one of key industry of water pollution, compared with other industry, it is large that dyeing waste water has wastewater discharge, the features such as color is dark, and hardly degraded organic substance content is high, and water quality is unstable.
For the processing problem of dyeing waste water, existing treatment technology mainly successively by materialization processing, biochemical treatment to treatment of dyeing wastewater, thereby degraded objectionable impurities, reach emission standard.For the materialization processing of current dyeing waste water, existing materialization treatment process is completed by operator's manual operations substantially.First dyeing waste water is introduced in pond, because the pH of dyeing waste water is uncertain, is therefore generally first regulated pH to alkalescence with lime, then add ferrous sulphate to carry out flocculation sediment processing to waste water.At present dyeing waste water is processed and need to be judged whether to occur abundant flocculation according to naked eyes early stage, if not fully flocculation so just shows that we go wrong in processing procedure Chinese medicine addition, do not adjust to the right place.Generally, pH is adjusted to 9-11 and just can fully flocculates, just isolate supernatant through settling basin.
For problem as above, notification number is the treatment of dyeing wastewater equipment that CN203238083U Chinese patent discloses a kind of automatic adjusting treatment agent amount, but in actual process, because inserting in dyeing waste water, pH meter is easy to be stopped up by impurity, cause pH meter measured value and actual value to occur excessive deviation, and pH value is nonlinear, control accuracy requires high, causes control system framework unstable.
Summary of the invention
For the pointed deficiency of prior art, goal of the invention of the present invention is to provide a kind of sampling detecting device detecting for printing and dyeing wastewater treatment system sampling, this sampling detecting device is by sampling dyeing waste water, first carry out sedimentation separation of supernatant, afterwards the transmittancy of dyeing waste water supernatant is detected, as available control signal, replace eye-observation, to set up better control system for printing and dyeing wastewater treatment system by the signal a little less than light intensity.
In order to realize foregoing invention object, the present invention has adopted following technical scheme:
For a sampling detecting device for printing and dyeing wastewater treatment system, described sampling detecting device comprise sampling water inlet pipe, for rejecting buffering filter, flocculating agent adding apparatus and the detection box for detection of dyeing waste water penetrability of dyeing waste water foreign material, sampling water inlet pipe output terminal connects detection box, and described buffering filter is arranged on the sampling water inlet pipe that detects box front side, described flocculating agent adding apparatus input end is connected to buffering filter and detects on the sampling water inlet pipe of box, described flocculating agent adding apparatus comprises medicament blending bin, stirring machine, water valve and the drug metering pump that is connected controller, described medicament blending bin is located at sampling water inlet pipe top, stirring machine is made up of with the paddle that is connected motor shaft output terminal to the motor of controller power invariability and energy output speed signal, described motor is in medicament blending bin outside and is arranged on medicament blending bin top, paddle is in medicament blending bin inner side, medicament blending bin is provided with medicament and adds entrance, water filling port and confection delivery outlet, drug metering pump connects medicament and adds entrance, water valve connects water filling port, confection delivery outlet connects sampling water inlet pipe, the described detection box for detection of dyeing waste water penetrability comprises box body, connects the sedimentation device of sampling water inlet pipe and the pick-up unit for detection of dyeing waste water supernatant transparent luminosity successively, and sedimentation device and pick-up unit are all in box body, wherein: described sedimentation device comprises base plate, spiral roll bending, upper sealing plate and side seal board, described spiral roll bending longitudinal curl also forms helical duct, described base plate sealing is fixed on the lower end of described spiral roll bending, upper sealing plate sealing is fixed on described spiral roll bending upper end, the spiral roll bending outer end of side seal board longitudinal sealing between base plate and upper sealing plate, and helical duct outer end is sealed, described upper sealing plate is provided with the oral siphon that is communicated with helical duct center and the supernatant water delivering orifice that is communicated with helical duct outer end, described side seal board bottom is provided with the precipitation extrusion that is communicated with helical duct outer end, and precipitation extrusion extends outside box body and in order to direct discharge, the described pick-up unit for detection of dyeing waste water supernatant transparent luminosity comprises measuring piece, dyeing waste water water inlet pipe and dyeing waste water rising pipe, inside described measuring piece, one end is provided with light source, the other end is provided with for gathering light signal and signal being inputed to the photoinduction element of printing and dyeing wastewater treatment system middle controller, between light source and photoinduction element, be provided with the inner chamber that is communicated with dyeing waste water, described dyeing waste water water inlet pipe is all connected measuring piece and is communicated with respectively described inner chamber with dyeing waste water rising pipe, supernatant water delivering orifice in described sedimentation device connects described for detection of the dyeing waste water water inlet pipe in the pick-up unit of dyeing waste water supernatant transparent luminosity.
As preferably, between described light source and inner chamber, be provided with the first transparent glass sheet of inclination, between described photoinduction element and inner chamber, be provided with the second transparent glass sheet of inclination; Described dyeing waste water water inlet pipe axial line correspondence is on the first transparent glass sheet tilting, and described dyeing waste water rising pipe axial line correspondence is on the second transparent glass sheet tilting.
As preferably, described pick-up unit also comprises described bidirectional cleaning device, and described bidirectional cleaning device comprises scavenging pump and for connecting the water pipe at scavenging pump and described measuring piece middle part.
In order to solve deficiency of the prior art, the present invention improves again to above-mentioned treatment of dyeing wastewater automatic control equipment, avoid the reference mark of pH parameter to control, so not only can reduce costs but also can improve stability and the durability of whole process control system.In development, existing printing and dyeing wastewater treatment system is sought after a kind of device detecting that dyeing waste water is sampled, so that low cost is set up new reference mark accurately.
Therefore, the sampling detecting device that the present invention adopts, carries out first sedimentation, rear separation to the dyeing waste water of sampling, isolate supernatant, afterwards the transmittancy of dyeing waste water supernatant is detected, by the signal a little less than light intensity as available control signal, by the transmittancy of dyeing waste water supernatant, control as new reference mark, use up strong and weak signal, replace eye-observation, to set up better control system for printing and dyeing wastewater treatment system.
In order farthest to weaken the hysteresis quality of control system, the present invention has to establish flocculating agent adding apparatus before detecting box, and flocculating agent does not change the clarity on sewage upper strata, only the solid granule rapid condensation of sewage is become to bulky grain, accelerates its precipitation.Simultaneously, also in the forward part of having at sampling detecting device, sedimentation device is set, otherwise control system hysteresis quality too seriously enters the time of steady state (SS) by the whole treatment of dyeing wastewater of impact, in the time period that does not enter steady state (SS), dyeing waste water enter the biochemical treatment tank in easy contaminate subsequent operation.Adopt sedimentation device of the present invention, dyeing waste water is entered from sedimentation device oral siphon, through helical duct, helical duct has elongated precipitation distance and the time of dyeing waste water, supernatant is separated from the supernatant water delivering orifice of upper end, helical duct outer end easily, and flocculent deposit is extruded at the precipitation extrusion of bottom, helical duct outer end, volume is little, good separating effect, is convenient to sample well and detect dyeing waste water supernatant liquid.
Brief description of the drawings
Fig. 1: the structural representation that in the embodiment of the present invention, sampling detecting device is connected with controller signals.
Fig. 2: in the embodiment of the present invention for detection of the structural representation of the detection box of dyeing waste water penetrability.
Fig. 3: the perspective view of sedimentation device in the embodiment of the present invention.
Fig. 4: the three-dimensional sectility schematic diagram of sedimentation device in the embodiment of the present invention.
Fig. 5: in the embodiment of the present invention for detection of the structural representation of the pick-up unit of dyeing waste water supernatant transparent luminosity.
Fig. 6: the structural representation of flocculating agent adding apparatus in the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described further.
Embodiment: a kind of sampling detecting device for printing and dyeing wastewater treatment system as shown in Figure 1, this sampling detecting device is by the sampling to dyeing waste water in disposal system, then the dyeing waste water of dosing processing in disposal system is carried out to rapid subsidence, extract supernatant and it is carried out to penetrability detection, for the controller 6 in disposal system provides control signal, replace eye-observation, to set up better control system for printing and dyeing wastewater treatment system.
Shown in Figure 1, sampling detecting device 5 comprises sampling water inlet pipe 51, for rejecting the buffering filter 52, flocculating agent adding apparatus 53 of dyeing waste water foreign material, detection box 54 and liquid collecting tank 57 for detection of dyeing waste water penetrability.Sampling water inlet pipe 51 is connected and is detected box 54 by buffering filter 52, buffering filter 52 is made up of surge tank and screen pack, screen pack is located in surge tank, detecting box 54 output terminals can directly drain dyeing waste water, sampling rising pipe 56 and reflux pump 58 also can be set, detect box 54 output terminals and connect sampling rising pipe 56, sampling rising pipe 56 is returned water pipeline by reflux pump 58 by the dyeing waste water having detected.Certainly, as shown in fig. 1, the buffering filter 52 before screen pack also can directly connect sampling rising pipe 56.
Flocculating agent adding apparatus 53 input ends are connected to buffering filter 52 and detect on the sampling water inlet pipe 51 of box 54, and flocculating agent does not change the clarity on sewage upper strata, only the solid granule rapid condensation of sewage are become to bulky grain, accelerate its precipitation.
Shown in Figure 6, above-mentioned flocculating agent adding apparatus 53 comprises medicament blending bin 531, stirring machine, water valve 535 and drug metering pump 534.Medicament blending bin 531 is located at sampling water inlet pipe 51 tops, and stirring machine is made up of with the paddle 533 that is connected motor 530 axle output terminals the motor 530 of power invariability and energy output speed signal.Motor 530 is in medicament blending bin outside and is arranged on medicament blending bin 531 tops, and paddle 533 is in medicament blending bin inner side, and paddle 533 connects motor 530 axle output terminals.Above-mentioned medicament blending bin 531 upper tops are provided with medicament and add entrance, its upper lateral part is provided with water filling port, and its bottom is provided with confection delivery outlet 532, and drug metering pump 534 output terminals connect medicament and add entrance, water valve 535 connects water filling port, and confection delivery outlet 532 connects sampling water inlet pipe 51.The amount adding in order to control better flocculating agent, above-mentioned motor 530 connects the controller 6 in disposal system by signal wire, and controller 6 connects by signal wire and control drug metering pump 534.
When control, calibration is controlled rotating speed in setting value, determine that setting value step is as follows: because of concentration and viscosity correlation, and the reverse correlationship of viscosity and resistance, drop into solid chemicals (flocculating agent) and make it to become target viscosities, suppose measuring rotating speed be 2000 turn/hour, so setting value be both 2000 turn/hour.Under the state of constant pressure and flow, if motor 530 drive the rotating speed of paddle 533 in clear water be 3000 turn/hour, now automatically open and control with regard to controller 6, start to control drug metering pump 534 adding medicines, when rotating speed higher than 2000 turning/hour time, illustrate that water medium viscosity reduces, automatically dropping into solid chemicals (flocculating agent) increases viscosity, when rotating speed turn 2000/hour, stop adding solid chemicals (flocculating agent); When rotating speed lower than 2000 turning/hour, open and control water valve 535 by controller 6 and add water from water filling port.
Shown in Figure 2, above-mentioned detection box 54 comprises box body, connects sedimentation device 54 ' of sampling water inlet pipe 51 and pick-up unit 54 " for detection of dyeing waste water supernatant transparent luminosity successively, and sedimentation device 54 ' and pick-up unit 54 " are all in box body.
Shown in Fig. 2, Fig. 3 and Fig. 4, the effect of sedimentation device 54 ' is that the solid rapid subsidence in sewage is isolated to sewage supernatant, pick-up unit 54 " for detection of dyeing waste water supernatant transparent luminosity of being convenient to below carry out penetrability detection, and it comprises base plate 1 ', spiral roll bending 2 ', upper sealing plate 3 ' and side seal board 21 '.Spiral roll bending 2 ' longitudinal curls, its xsect is mosquito-repellent incense-shaped spiral, forms helical duct 20 ' in spiral roll bending 2 ', and spiral roll bending 2 ' two ends flush.Above-mentioned base plate 1 ' sealing is fixed on the lower end of described spiral roll bending 2 ', base plate 1 ' and spiral roll bending 2 ' lower ends are detachable fixing, upper sealing plate 3 ' sealings are fixed on spiral roll bending 2 ' upper ends, the spiral roll bending 2 ' outer ends of side seal board 21 ' longitudinal sealings between base plate 1 ' and upper sealing plate 3 ', and helical duct outer end 20b ' is sealed.Upper sealing plate 3 ' centers are provided with oral siphon 4 ' for being connected into dyeing waste water, and oral siphon 4 ' are communicated with helical duct center 20a ', and a lateral edges of upper sealing plate 3 ' is provided with supernatant water delivering orifice 5 ', and supernatant water delivering orifice 5 ' are communicated with helical duct 20 ' outer ends.Above-mentioned side seal board 21 ' bottoms are provided with precipitation extrusion 6 ' that are communicated with helical duct 20 ' outer ends.In order to seal better and to fix, above-mentioned side seal board 21 ' and spiral roll bending 2 ' outer ends are connected as a single entity.
Shown in Figure 5, should be formed by measuring piece 2 ", bidirectional cleaning device 4 ", dyeing waste water water inlet pipe 1 " and dyeing waste water rising pipe 3 " for detection of pick-up unit 54 " of dyeing waste water supernatant transparent luminosity.Wherein measuring piece 2 " are main bodys of this pick-up unit, measuring piece 2 " hollows, and one end is provided with light source 21 " inside measuring piece 2 ", and the inner side other end is provided with photoinduction element 22 ".Between light source 21 " and photoinduction element 22 ", be provided with inner chamber 20 " that are communicated with dyeing waste water.Light source 21 " are by isolated inner chamber 20 " of the first transparent glass sheet 210 " that tilt, and photoinduction element 22 " are by isolated inner chamber 20 " of the second transparent glass sheet 220 " that tilt.Above-mentioned dyeing waste water water inlet pipe 1 " is from below measuring piece 2 " and be communicated with above-mentioned inner chamber 20 "; Dyeing waste water rising pipe 3 " places connect measuring piece 2 " and are communicated with above-mentioned inner chamber 20 " from top.Above-mentioned bidirectional cleaning device 4 " are made up of the water pipe at scavenging pump 55 and connection scavenging pump 55 and measuring piece inner chamber 20 " middle parts.Particularly, above-mentioned dyeing waste water water inlet pipe 1 " axial line correspondence is in the first transparent glass sheet 210 " central region that tilt, and the angle number of degrees between the first transparent glass sheet 210 " of the axial line of dyeing waste water water inlet pipe 3 " and inclination are between 15-40 degree.Dyeing waste water rising pipe 3 " axial line correspondences are in the second transparent glass sheet 220 " central region that tilt, and the angle number of degrees between the second transparent glass sheet 220 " of the axial line of dyeing waste water rising pipe 1 " and inclination are between 15-40 degree.The object arranging is like this for when dyeing waste water water inlet pipe 1 ", and current can impact the first transparent glass sheet 210 ", prevent that the first transparent glass sheet 210 " are difficult for incrustation; And when inner chamber 20 " water outlet, the second transparent glass sheet 220 " also can bear the current from inner chamber 20 ", are difficult for incrustation, keep the transparency of the first transparent glass sheet 210 " and the second transparent glass sheet 220 ", improve the accuracy detecting.
Above-mentioned sedimentation device 54 ' and pick-up unit 54 " for detection of dyeing waste water supernatant transparent luminosity are described in detail, oral siphon 4 ' in above-mentioned sedimentation device 54 ' are connected with the output terminal of sampling water inlet pipe 51, supernatant water delivering orifice 5 ' in sedimentation device 54 ' connect for detection of dyeing waste water water inlet pipe 1 " in pick-up unit 54 " of dyeing waste water supernatant transparent luminosity, dyeing waste water rising pipe 3 " in the pick-up unit 54 " sampling rising pipe 56 that can be linked back, and precipitation extrusion 6 ' in sedimentation device 54 ' directly drain.