CN108069572B - MBR integrated printing and dyeing wastewater treatment equipment and application method thereof - Google Patents
MBR integrated printing and dyeing wastewater treatment equipment and application method thereof Download PDFInfo
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- CN108069572B CN108069572B CN201810143648.2A CN201810143648A CN108069572B CN 108069572 B CN108069572 B CN 108069572B CN 201810143648 A CN201810143648 A CN 201810143648A CN 108069572 B CN108069572 B CN 108069572B
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- 238000007639 printing Methods 0.000 title claims abstract description 12
- 238000004043 dyeing Methods 0.000 title claims abstract description 10
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 title claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 113
- 238000004062 sedimentation Methods 0.000 claims abstract description 49
- 238000006243 chemical reaction Methods 0.000 claims abstract description 43
- 239000010865 sewage Substances 0.000 claims abstract description 41
- 238000011001 backwashing Methods 0.000 claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 238000005192 partition Methods 0.000 claims abstract description 12
- 230000010354 integration Effects 0.000 claims abstract description 4
- 238000005189 flocculation Methods 0.000 claims description 32
- 230000016615 flocculation Effects 0.000 claims description 32
- 230000015271 coagulation Effects 0.000 claims description 28
- 238000005345 coagulation Methods 0.000 claims description 28
- 238000003756 stirring Methods 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 9
- 239000003814 drug Substances 0.000 claims description 7
- 229940079593 drug Drugs 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims 4
- 239000012528 membrane Substances 0.000 abstract description 36
- 230000000694 effects Effects 0.000 abstract description 5
- 238000000746 purification Methods 0.000 description 7
- 239000000945 filler Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 4
- 239000010802 sludge Substances 0.000 description 4
- 238000004061 bleaching Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 238000005273 aeration Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000012510 hollow fiber Substances 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- 239000011859 microparticle Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/008—Mobile apparatus and plants, e.g. mounted on a vehicle
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The invention discloses MBR integrated printing and dyeing wastewater treatment equipment, which comprises a bottom plate, wherein a box body, a driving device and a control unit are arranged on the bottom plate, the control unit controls the driving device, and the driving device provides working power for the equipment; the interior of the box body is divided into an MBR (Membrane biological reactor) bin, a reaction bin and a sedimentation bin through a partition plate, the MBR bin is provided with a sewage inlet, the MBR bin is communicated with a first pipe, the reaction bin is communicated with a water production pipe, one end of the first pipe, which is far away from the MBR bin, is communicated with one end, which is far away from the reaction bin, of the water production pipe through a three-way electromagnetic valve, and the three-way electromagnetic valve is also communicated with a backwashing pipe; the reaction bin is communicated with the sedimentation bin, and the sedimentation bin is provided with a water outlet. Compared with the prior art, the invention has the advantages of high structural integration degree, small occupied area, high automation degree, low use cost and good purifying effect.
Description
Technical Field
The invention relates to the field of printing and dyeing wastewater treatment equipment, in particular to MBR integrated printing and dyeing wastewater treatment equipment and a using method thereof.
Background
At present, the traditional printing and dyeing wastewater treatment facilities are all civil engineering facilities, all reaction bins are arranged underground and are wholly immovable, the occupied area of each reaction bin is large, the flexibility is low, the management and maintenance are difficult, the use cost is high, and the sewage purification effect is required to be improved.
Disclosure of Invention
The invention provides MBR integrated printing and dyeing wastewater treatment equipment for solving the defects of the prior art, which has the advantages of high integration degree, small occupied area, high automation degree, low use cost and good purifying effect. The specific technical scheme is as follows:
the invention discloses MBR integrated printing and dyeing wastewater treatment equipment, which comprises a bottom plate, wherein a box body, a driving device and a control unit are arranged on the bottom plate, an MBR bin, a reaction bin and a sedimentation bin are separated from the inside of the box body through a partition plate, the MBR bin is provided with a sewage inlet, the MBR bin is communicated with a first pipe, the reaction bin is communicated with a water production pipe, one end of the first pipe, which is far away from the MBR bin, and one end, which is far away from the reaction bin, of the water production pipe are communicated with each other through a three-way electromagnetic valve, and the three-way electromagnetic valve is also communicated with a backwashing pipe; the reaction bin is communicated with the sedimentation bin, and the sedimentation bin is provided with a water outlet; the driving device comprises a blower, a water producing pump and a backwashing pump, wherein an air outlet of the blower is communicated with the MBR bin through a pipeline, the water producing pump is arranged on the water producing pipe, and the backwashing pump is arranged on the backwashing pipe; the outer side wall of the box body is provided with a dosing barrel which is communicated with the reaction bin through a pipeline, a metering pump is arranged in the dosing barrel, and the blower, the water producing pump, the backwash pump, the three-way electromagnetic valve and the metering pump are controlled by a control unit.
Further, the vertical projection of the box body is L-shaped, and the water producing pump, the backwash pump, the blower and the control unit are all positioned at the inner side of the L-shaped projection of the box body
Further, the two water producing pumps are arranged, and the two water producing pumps work alternately.
Further, the reaction bin is separated into a coagulation chamber and a flocculation chamber by a partition plate, the water production pipe is communicated with the coagulation chamber, the coagulation chamber is communicated with the flocculation chamber, and the flocculation chamber is communicated with the sedimentation bin.
Further, the reaction bin is positioned between the MBR bin and the sedimentation bin, a first self-flow hole is formed in a partition plate between the coagulation chamber and the flocculation chamber, a second self-flow hole is formed in a partition plate between the flocculation chamber and the sedimentation bin, and the horizontal height of the second self-flow hole is lower than that of the first self-flow hole.
Further, the coagulation chamber and the flocculation chamber are provided with stirring structures.
Further, the dosing barrels are three, two of the dosing barrels are communicated with the coagulation chamber, the other dosing barrel is communicated with the flocculation chamber, and each dosing barrel is positioned on the side wall of the sedimentation bin.
Further, the method for using the device comprises the following steps:
s1, injecting sewage into the MBR bin, and starting a blower to enable the first pipe and the water production pipe to be in a communicated state.
S2, sewage treated by the MBR bin enters the reaction bin, so that medicines in the medicine adding barrel enter the reaction bin.
S3, automatically flowing the sewage after the treatment of the reaction bin into the sedimentation bin, and discharging the sewage after the treatment of the sedimentation bin to the sedimentation bin so as to complete the sewage treatment process.
Further, in the operation process of the device, the three-way electromagnetic valve is periodically changed into a passage state, so that the first pipe is periodically changed between a state of being communicated with the water producing pipe and a state of being communicated with the backwashing pipe, when the first pipe is communicated with the water producing pipe, the water producing pump is periodically started, the backwashing pump is closed, and when the first pipe is communicated with the backwashing pipe, the water producing pump is closed, and the backwashing pump is started.
Further, the first pipe is changed from the state of being communicated with the water producing pipe to the state of being communicated with the backwash pipe every six hours, and is kept in the state for three minutes, and then the first pipe is changed from the state of being communicated with the backwash pipe to the state of being communicated with the water producing pipe; when the first pipe is in a state of being communicated with the water producing pipe, the water producing pump is closed every six minutes to eight minutes, and the duration of the closed state is two minutes.
The invention has the beneficial effects that: the working bin bodies are integrated in the box body, so that the integrated level is high, the occupied area is small, and the manufacturing cost is low; the whole box body can move, the placement position can be changed at any time, and the flexibility is high; the connecting route among all the working cabins is short, so that the maintenance and the management are convenient, and the manufacturing cost is low; the invention applies the MBR purification technology to the printing sewage treatment field, and has good purification effect; the purification process is controlled by the control unit, the automation degree is high, and the use cost is low.
Drawings
FIG. 1 is a schematic top view of an embodiment of the present invention;
FIG. 2 is a schematic diagram of a box structure according to an embodiment of the present invention;
FIG. 3 is a schematic diagram showing the connection of the first pipe, the water producing pipe and the backwash pipe according to the embodiment of the present invention;
FIG. 4 is a schematic workflow diagram of an embodiment of the present invention.
The drawing is marked: the device comprises a bottom plate 100, a box 200, an MBR (membrane bioreactor) bin 201, a first self-flowing hole 202, a coagulation chamber 203, a flocculation chamber 204, a reaction bin 205, a second self-flowing hole 206, a sedimentation bin 207, a membrane frame 208, a dosing barrel 209, a control unit 301, a water producing pump 302, a backwash pump 303, a blower 304, a first pipe 305, a water producing pipe 306, a backwash pipe 307 and a three-way electromagnetic valve 400.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
The invention will be described in further detail below with reference to the drawings by means of specific embodiments. Please refer to the accompanying drawings.
The invention discloses MBR integrated printing and dyeing wastewater treatment equipment, which comprises a bottom plate 100, wherein a box body 200, a driving device and a control unit 301 are fixedly arranged on the bottom plate 100, the top of the box body 200 is opened, an MBR bin 201, a reaction bin 205 and a sedimentation bin 207 are separated from the inside of the box body 200 through partition plates, the MBR bin 201 is provided with a sewage inlet, preferably, sewage directly enters from the top of the MBR bin 201, a plurality of MBR membranes and a membrane frame 208 for installing the MBR membranes are arranged in the middle position in the MBR bin 201, the membrane frame 208 is square, a water collecting pipe is arranged on the membrane frame 208, a first pipe 305 is communicated with the water collecting pipe, the MBR membranes are hung in the membrane frame 208, the MBR membranes are composed of a plurality of hollow fiber membrane pipes, and two ends of the fiber membrane pipes are communicated with the water collecting pipe on the membrane frame 208, and water can enter the fiber membrane pipes and be collected in the water collecting pipe. Because the specific structures of the membrane holder and the MBR membrane are prior art, they are not within the scope of the present invention, and thus will not be described in further detail. The side wall of the MBR bin 201 is communicated with a first pipe 305, the pipe orifice of the first pipe 305 is communicated with a water collecting pipe on the membrane frame 208, the side wall of the reaction bin 205 is communicated with a water producing pipe 306, one end of the first pipe 305, which is far away from the MBR bin 201, is communicated with one end of the water producing pipe 306, which is far away from the reaction bin 205, through a three-way electromagnetic valve 400 (not shown in the figure), the other port of the three-way electromagnetic valve 400 is also communicated with a backwashing pipe 307, and the water inlet end of the backwashing pipe 307 is communicated with a water storage tank (not shown in the figure). Preferably, the water producing pipe 306, the backwash pipe 307 and the first pipe 305 are all fixed to the outer side wall of the tank 200. The reaction bin 205 is communicated with the sedimentation bin 207, so that sewage enters the sedimentation bin 207 from the reaction bin 205; the sedimentation bin 207 is provided with a water outlet, the sedimentation bin 207 is a sedimentation bin 207 with inclined tube type fillers, the sedimentation bin 207 is internally provided with inclined tube type fillers and a bracket for installing the inclined tube type fillers, sewage in the reaction bin 205 is led in from the bottom of the sedimentation bin 207, the inclined tube type fillers filter the sewage in the sewage overflow process, the overflow water is water reaching the standard and can be discharged, and the overflow water is discharged from the water outlet of the sedimentation bin 207. The driving device comprises a blower 304, a water producing pump 302 and a backwashing pump 303, wherein an air outlet of the blower 304 is communicated with the MBR bin 201 through a pipeline, preferably, the blower 304 is communicated with the bottom of the MBR bin 201, and the blower 304 is inflated upwards from the bottom of the MBR bin 201 to perform the aeration process in the MBR process. The water producing pump 302 is installed on the water producing pipe 306, and in the sewage treatment process, the water producing pipe 306 is communicated with the first pipe 305 through the three-way electromagnetic valve 400, and under the action of the water producing pump 302, the water producing pipe 306 pumps the sewage in the MBR chamber 201 into the reaction chamber 205. Meanwhile, under the action of the water producing pump 302, sewage passes through the membrane wall from the outside of the fiber membrane tube of the MBR membrane, enters the inside of the fiber membrane tube, then is collected into the water collecting tube, and finally is discharged from the first tube 305; the backwash pump 303 is installed on the backwash pipe 307, when the backwash work is performed, the backwash pipe 307 is communicated with the first pipe 305 through the control three-way electromagnetic valve 400, a passage between the first pipe 305 and the water producing pipe 306 is closed, under the action of the backwash pump 303, the backwash pipe 307 pumps water from an external water storage tank, then the water is reversely flushed into the inner side of the square membrane frame 208 along the first pipe 305, the water which is reversely flushed passes through the MBR membrane from the inner side of the square membrane frame 208, so that the MBR membrane is flushed, bacteria on the inner surface and the outer surface of the MBR membrane are killed, organic matters and the like desorbed on the membrane surface are flushed, and the pressure difference between the membranes is recovered; the outer side wall of the box 200 is provided with a dosing barrel 209, the dosing barrel 209 is communicated with the reaction chamber 205 through a pipeline, preferably, the pipeline is fixed on the side wall of the box 200, a metering pump is arranged in the dosing barrel 209, the metering pump can convey medicine from the dosing barrel 209 into the reaction chamber 205, and in order to control the output flow of the medicine more easily, the metering pump is preferably a diaphragm pump. The blower 304, the water producing pump 302, the backwash pump 303, the three-way electromagnetic valve 400 and the metering pump are all controlled by the control unit 301. The working bin bodies are integrated in the box body 200, so that the integration level is high, the occupied area is small, and the manufacturing cost is low; the whole box body 200 can move, the placement position can be changed at any time, and the flexibility is high; the connecting route among all the working cabins is short, so that the maintenance and the management are convenient, and the manufacturing cost is low; the invention applies the MBR purification technology to the printing sewage treatment field, and has good purification effect; the purification process is controlled by the control unit, the automation degree is high, and the use cost is low.
Further, as shown in fig. 1, the vertical projection of the box 200 is L-shaped, that is, the projection of the top plane of the box 200 is L-shaped, preferably, the length-width-height dimension of the precipitation bin 207 is 3.9m×3m×2.8m, the length-width-height dimension of the reaction bin 205 is 1m×2.8m, and the length-width-height dimension of the precipitation bin 207 is 3.1m×2×2.8m; the water producing pump 302, the backwashing pump 303, the air blower 304 and the control unit 301 are all positioned on the inner side of the L-shaped projection of the box body 200, so that the structure of the equipment is more compact and attractive, and the occupied area is reduced.
Further, two water producing pumps 302 are provided, the two water producing pumps 302 are all used for acting on the water producing pipe 306, the two water producing pumps 302 work alternately, when one water producing pump 302 fails, the other water producing pump 302 can be used for replacing work, the equipment is prevented from stopping working, and the working efficiency is improved. When the water producing pump 302 fails, the control unit 301 will sound an alarm.
Further, the reaction chamber 205 is divided into a coagulation chamber 203 and a flocculation chamber 204 by a partition plate, a water inlet is arranged on the side wall of the coagulation chamber 203, a water producing pipe 306 is communicated with the water inlet of the coagulation chamber 203, a water outlet of the coagulation chamber 203 is communicated with the water inlet of the flocculation chamber 204, sewage is automatically caused to flow into the flocculation chamber 204 by water level difference between the coagulation chamber 203 and the flocculation chamber 204, a water outlet of the flocculation chamber 204 is communicated with the water inlet of the sedimentation chamber 207, preferably, a pipeline is arranged on the water inlet of the sedimentation chamber 207, is arranged along the side wall of the sedimentation chamber 207 and extends to the bottom of the sedimentation chamber 207, so that sewage overflows from the bottom of the sedimentation chamber 207, and the overflow process is realized by pressure generated by the water level difference between the flocculation chamber 204 and the sedimentation chamber 207.
Further, the reaction bin 205 is located between the MBR bin 201 and the sedimentation bin 207, a first self-flow hole 202 is formed in a partition plate between the coagulation chamber 203 and the flocculation chamber 204, a second self-flow hole 206 is formed in a partition plate between the flocculation chamber 204 and the sedimentation bin 207, and a pipeline is connected to the second self-flow hole 206, is arranged along the side wall of the sedimentation bin 207 and extends to the bottom of the sedimentation bin 207, so that sewage overflows upwards from the bottom of the sedimentation bin 207; the second self-flow hole 206 has a lower level than the first self-flow hole 202, and sewage can flow along the coagulation chamber 203, the flocculation chamber 204 and the sedimentation chamber 207 in sequence by utilizing the water level difference. Therefore, the laying dosage of the pipeline is greatly reduced, the cost is saved, and the maintenance and the management are easy.
Further, stirring structures are respectively arranged in the coagulation chamber 203 and the flocculation chamber 204, the stirring structures are controlled by the control unit 301, the stirring structures are preferably stirring wheels, and the stirring structures are used for stirring sewage in the coagulation chamber 203 and the flocculation chamber 204, so that the sewage in the coagulation chamber 203 and the flocculation chamber 204 is uniformly mixed with the medicine.
Further, the dosing barrels 209 are provided with three, wherein two dosing barrels 209 are respectively filled with PAC solution and bleaching water, the two dosing barrels 209 are communicated with the coagulation chamber 203 through a pipeline, the other dosing barrel 209 is filled with PAM solution, the dosing barrels 209 are communicated with the flocculation chamber 204, and each dosing barrel 209 is fixed on the side wall of the sedimentation bin 207 far away from the reaction bin 205, so that the structure is compact, and the occupied area is small.
Further, the method for using the device comprises the following steps:
s1, sewage is injected into the MBR bin 201, preferably, the sewage is introduced from the top of the MBR bin 201, then the blower 304 is started under the control of the control unit 301, and the three-way electromagnetic valve 400 is controlled to change the first pipe 305 and the water producing pipe 306 into a communication state.
S2, under the control of a control unit 301, starting a water producing pump 302, enabling sewage treated by an MBR bin 201 to enter a coagulation chamber 203 along a pipeline formed by a first pipe 305 and a water producing pipe 306, starting metering pumps of two dosing barrels 209, enabling PAC solution and bleaching water in the two dosing barrels 209 to enter the coagulation chamber 203, and starting a stirring structure in the coagulation chamber 203; the sewage automatically flows into the flocculation chamber 204, a metering pump of another dosing barrel 209 is started, so that PAM solution in the dosing barrel 209 enters the flocculation chamber 204, and a stirring structure in the flocculation chamber 204 is started.
S3, the sewage treated by the flocculation chamber 204 automatically flows into the sedimentation bin 207, and after the sewage is filtered by the inclined tube filler in the sedimentation bin 207, the sewage is discharged out of the sedimentation bin 207, so that the sewage treatment process is completed.
Further, during the operation of the above-described apparatus, the three-way electromagnetic valve 400 is periodically changed in the passage state, and the first pipe 305 is periodically changed between the state of being connected to the water-producing pipe 306 and the state of being connected to the backwash pipe 307. When the first pipe 305 is communicated with the water producing pipe 306, the water producing pump 302 is periodically turned on, the backwash pump 303 is turned off, and at this time, the MBR chamber 201 periodically supplies water to the coagulation chamber 203. When the first pipe 305 is communicated with the backwashing pipe 307, the water producing pump 302 is turned off, and the backwashing pump 303 is turned on, and at this time, the MBR membrane is backwashed in the MBR bin 201.
Further, the first pipe 305 is changed from the state of being connected to the water producing pipe 306 to the state of being connected to the backwash pipe 307 every six hours and is maintained in that state for three minutes, and then the first pipe 305 is changed from the state of being connected to the backwash pipe 307 back to the state of being connected to the water producing pipe 306; when the first pipe 305 is in a state of being communicated with the water producing pipe 306, the water producing pump 302 is turned off every six minutes to eight minutes, preferably eight minutes, and the off state lasts for two minutes, and after two minutes, the water producing pump 302 is turned on and then is turned on and off periodically. During membrane filtration, aggregates and microparticles of sludge are accumulated on the membrane surface, and when water is continuously discharged for a long time, even if air bubbles formed by aeration and upward flow wash the membrane surface, the sludge is accumulated on the membrane surface. The periodic operation of the water producing pump 302 can greatly improve the situation, when the water producing pump 302 stops pumping, the pressure difference at two sides of the membrane is reduced to disappear, and the pollutants attached to the surface of the membrane are more likely to fall off under the disturbance of air bubbles and upward flow generated by the blower 304, so that the aim of cleaning is fulfilled.
The working principle of the invention is as follows: sewage firstly enters an MBR bin 201, and COD in the sewage is efficiently removed under the action of various strains and an MBR membrane of the MBR bin 201 cr 、BOD 5 、NH 3 N, SS, sulfide, total phosphorus and color; the treated wastewater enters a reaction bin 205 again, and PAC, PAM and bleaching water are added into the reaction bin 205; fully reacted waste waterThen enters a precipitation bin 207 to further remove the residual COD cr 、BOD 5 SS, total phosphorus, and color; the supernatant precipitated by the precipitation bin 207 can reach the discharge standard; sludge generated by the MBR bin 201, the reaction bin 205 and the sedimentation bin 207 is discharged into an external sludge tank through pipelines.
The foregoing is a further detailed description of the invention in connection with specific embodiments, and it is not intended that the invention be limited to such description. It will be apparent to those skilled in the art that several simple deductions or substitutions can be made without departing from the spirit of the invention.
Claims (7)
1. The utility model provides an MBR integration printing and dyeing wastewater treatment facility, includes bottom plate (100), be equipped with box (200), drive arrangement, control unit (301) on bottom plate (100), box (200) are inside to separate out MBR storehouse (201), reaction storehouse (205), deposit storehouse (207) through the baffle, MBR storehouse (201) are equipped with the sewage entry, MBR storehouse (201) intercommunication has first pipe (305), reaction storehouse (205) intercommunication has a water production pipe (306), first pipe (305) keep away from one end of MBR storehouse (201) with produce and keep away from between the one end of reaction storehouse (205) through tee bend electromagnetic valve (400) intercommunication, tee bend electromagnetic valve (400) still communicate has backwash pipe (307); the reaction bin (205) is communicated with the sedimentation bin (207), and the sedimentation bin (207) is provided with a water outlet; the driving device comprises a blower (304), a water producing pump (302) and a backwashing pump (303), wherein an air outlet of the blower (304) is communicated with the MBR bin (201) through a pipeline, the water producing pump (302) is arranged on the water producing pipe (306), and the backwashing pump (303) is arranged on the backwashing pipe (307); the chemical dosing device is characterized in that a chemical dosing barrel (209) is arranged on the outer side wall of the box body (200), the chemical dosing barrel (209) is communicated with the reaction bin (205) through a pipeline, a metering pump is arranged in the chemical dosing barrel (209), and the air blower (304), the water producing pump (302), the backwashing pump (303), the three-way electromagnetic valve (400) and the metering pump are controlled by the control unit (301);
the reaction bin (205) is divided into a coagulation chamber (203) and a flocculation chamber (204) through a partition plate, the water production pipe (306) is communicated with the coagulation chamber (203), the coagulation chamber (203) is communicated with the flocculation chamber (204), and the flocculation chamber (204) is communicated with the sedimentation bin (207);
the reaction bin (205) is positioned between the MBR bin (201) and the sedimentation bin (207), a first self-flow hole (202) is formed in a partition plate between the coagulation chamber (203) and the flocculation chamber (204), a second self-flow hole (206) is formed in a partition plate between the flocculation chamber (204) and the sedimentation bin (207), and the level of the second self-flow hole (206) is lower than that of the first self-flow hole (202);
the dosing barrels (209) are three, two of the dosing barrels (209) are communicated with the coagulation chamber (203), the other dosing barrel (209) is communicated with the flocculation chamber (204), and each dosing barrel (209) is positioned on the side wall of the sedimentation bin (207).
2. The apparatus of claim 1, wherein the vertical projection of the tank (200) is L-shaped, and the water producing pump (302), the backwash pump (303), the blower (304), and the control unit (301) are all located inside the L-shaped projection of the tank (200).
3. The apparatus of claim 2, wherein said water producing pumps (302) have two, two of said water producing pumps (302) operating alternately.
4. The apparatus according to claim 1, characterized in that stirring structures are provided in both the coagulation chamber (203) and the flocculation chamber (204).
5. A method of using the device according to any one of claims 1 to 4, characterized in that the method of operation comprises the steps of:
s1, injecting sewage into the MBR bin (201), and starting the air blower (304) to enable the first pipe (305) and the water producing pipe (306) to be in a communicating state;
s2, sewage treated by the MBR bin (201) enters the reaction bin (205), so that medicines in the medicine adding barrel (209) enter the reaction bin (205);
s3, the sewage after being treated by the reaction bin (205) automatically flows into the sedimentation bin (207), and after being treated by the sedimentation bin (207), the sewage is discharged out of the sedimentation bin (207) to finish the sewage treatment process.
6. The method of using the apparatus according to claim 5, wherein during operation, the three-way electromagnetic valve (400) is periodically changed to a passage state, thereby periodically changing the first pipe (305) between a state of being connected to the water producing pipe (306) and a state of being connected to the backwash pipe (307), the water producing pump (302) is periodically turned on when the first pipe (305) is connected to the water producing pipe (306), the backwash pump (303) is turned off, and the water producing pump (302) is turned off when the first pipe (305) is connected to the backwash pipe (307), and the backwash pump (303) is turned on.
7. The method of using the apparatus according to claim 6, wherein the first pipe (305) is changed from a state of being connected to the water producing pipe (306) to a state of being connected to the backwash pipe (307) every six hours and is maintained in that state for three minutes, and then the first pipe (305) is changed from a state of being connected to the backwash pipe (307) back to a state of being connected to the water producing pipe (306); when the first pipe (305) is in a state of being communicated with the water producing pipe (306), the water producing pump (302) is closed every six minutes to eight minutes, and the closing state lasts for two minutes.
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| CN109608010A (en) * | 2019-01-24 | 2019-04-12 | 曾从根 | A kind of sludge negative pressure ceramic membrane concentration all-in-one machine |
| CN113072153A (en) * | 2021-06-07 | 2021-07-06 | 北京水利发展有限公司 | Medical waste water is from mixing purification unit |
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