CN214528611U - Printing and dyeing wastewater treatment combination equipment - Google Patents
Printing and dyeing wastewater treatment combination equipment Download PDFInfo
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- CN214528611U CN214528611U CN202120509312.0U CN202120509312U CN214528611U CN 214528611 U CN214528611 U CN 214528611U CN 202120509312 U CN202120509312 U CN 202120509312U CN 214528611 U CN214528611 U CN 214528611U
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Abstract
The utility model provides a printing and dyeing wastewater treatment combination equipment, this printing and dyeing wastewater treatment combination equipment make full use of ozone contact oxidation unit carries out the tail gas that contains ozone that produces after the oxidation treatment to the printing and dyeing wastewater after pretreatment unit handles to membrane biological reaction unit aeration, the bactericidal action of ozone blows the brush to membrane biological reaction unit in the utilization tail gas and disinfects the washing, the setting of sodium hypochlorite device in traditional membrane biological reaction unit has been saved, the setting of tail gas absorption tower has also been saved simultaneously, thereby the treatment effeciency of membrane biological reaction unit has been improved effectively, reduce the equipment input and save space.
Description
Technical Field
The utility model relates to a waste water treatment field especially relates to a printing and dyeing wastewater treatment combination equipment.
Background
Membrane bioreactors (MBR membrane systems) are widely used in the treatment of industrial and municipal sewage. The membrane bioreactor organically combines the traditional biological wastewater treatment method and the modern membrane separation technology, and is a treatment method capable of efficiently treating wastewater and improving water quality.
However, in the operation process of the membrane bioreactor, activated sludge, microorganisms, particles in sewage and the like can be adsorbed and deposited on the surface or in the membrane pores to reduce or block the membrane pore size, so that membrane pollution is caused and the treatment efficiency of the membrane bioreactor is influenced. Therefore, the operation of the membrane bioreactor needs to be stopped periodically by workers, and then the membrane bioreactor is soaked, sterilized and cleaned by using sodium hypochlorite, so that the treatment efficiency of the membrane bioreactor is greatly influenced, a large amount of medicaments need to be consumed, and the cost of wastewater treatment is increased.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that the membrane bioreactor needs to be soaked and sterilized by using sodium hypochlorite regularly in the prior art, the treatment efficiency of the membrane bioreactor is affected, the utility model provides a printing and dyeing wastewater treatment combined equipment, the concrete technical scheme is as follows:
a printing and dyeing wastewater treatment combination device, which comprises a pretreatment unit, an ozone contact oxidation unit and a membrane biological reaction unit which are connected in sequence,
the pretreatment unit is used for carrying out physical pretreatment on the printing and dyeing wastewater to be treated;
the ozone contact oxidation unit is used for carrying out oxidation treatment on the printing and dyeing wastewater treated by the pretreatment unit, and the ozone contact oxidation unit is also used for inputting tail gas containing ozone generated after the printing and dyeing wastewater treated by the pretreatment unit is subjected to oxidation treatment into the membrane biological reaction unit so as to aerate the membrane biological reaction unit;
the membrane biological reaction unit is used for carrying out biochemical treatment and physical filtration treatment on the printing and dyeing wastewater treated by the ozone contact oxidation unit.
Preferably, the dyeing wastewater treatment combination equipment further comprises an ozone generation unit, wherein the ozone generation unit is connected with the ozone contact oxidation unit and is used for providing ozone required by the ozone contact oxidation unit for oxidation treatment of the dyeing wastewater to the ozone contact oxidation unit.
Preferably, the dyeing wastewater treatment combination equipment further comprises an air distribution piece, the air distribution piece is arranged at the bottom of the ozone contact oxidation unit and is connected with the ozone generation unit, and the air distribution piece is used for improving the distribution uniformity of ozone in the ozone contact oxidation unit.
Preferably, the air distribution piece is provided with a plurality of air distribution holes, and the air distribution holes are uniformly distributed on the air distribution piece at intervals.
Preferably, the ozone contact oxidation unit is provided with a water distribution port, the pretreatment unit is connected with the ozone contact oxidation unit through the water distribution port, and the printing and dyeing wastewater treated by the pretreatment unit can be input into the ozone contact oxidation unit through the water distribution port.
Preferably, the printing and dyeing wastewater treatment combined equipment further comprises an anaerobic unit, wherein the anaerobic unit is arranged between the ozone contact oxidation unit and the membrane biological reaction unit; the anaerobic unit is used for carrying out anaerobic denitrification treatment on the printing and dyeing wastewater treated by the ozone contact oxidation unit.
Preferably, the printing and dyeing wastewater treatment combined equipment further comprises an aerobic unit, wherein the aerobic unit is arranged between the ozone contact oxidation unit and the membrane biological reaction unit; the aerobic unit is used for carrying out aerobic treatment and nitration treatment on the printing and dyeing wastewater treated by the ozone contact oxidation unit.
Preferably, the printing and dyeing wastewater treatment combined equipment further comprises a regulating unit, and the regulating unit is used for regulating the water quantity of the printing and dyeing wastewater.
Preferably, the printing and dyeing wastewater treatment combination equipment further comprises a precipitation unit, the precipitation unit is connected with the membrane biological reaction unit, and the precipitation unit is used for carrying out physical precipitation treatment on the printing and dyeing wastewater treated by the membrane biological reaction unit.
Preferably, the dyeing wastewater treatment combination equipment further comprises a sludge treatment unit, the sludge treatment unit is connected with the pretreatment unit and the precipitation unit, and the sludge treatment unit is used for dewatering and drying the suspended substances separated by the pretreatment unit and the precipitates generated by the precipitation unit.
The utility model has the advantages that: be different from the prior art, the utility model provides a pair of printing and dyeing wastewater treatment combination equipment is including the preprocessing unit, ozone contact oxidation unit and the membrane biological reaction unit that connect gradually, and the preprocessing unit is used for carrying out the physics preliminary treatment to the printing and dyeing wastewater of treating, and after printing and dyeing wastewater got into the preprocessing unit, the preprocessing unit was used for getting rid of the great suspended substance in the printing and dyeing wastewater, avoided these suspended substances to get into ozone contact oxidation unit and caused the jam to ozone contact oxidation unit, influenced ozone contact oxidation unit's treatment effect; the printing and dyeing wastewater treated by the pretreatment unit enters an ozone contact oxidation unit, the ozone contact oxidation unit is used for carrying out oxidation treatment on the printing and dyeing wastewater treated by the pretreatment unit so as to oxidize complex macromolecular organic matters in the printing and dyeing wastewater into biodegradable micromolecular organic matters to improve the biodegradability of the printing and dyeing wastewater, and simultaneously, ammonia nitrogen in the printing and dyeing wastewater can be oxidized and decomposed into nitrogen and water so as to effectively remove the complex macromolecular organic matters and the ammonia nitrogen in the printing and dyeing wastewater and realize secondary purification treatment of the printing and dyeing wastewater; the printing and dyeing wastewater treated by the ozone contact oxidation unit enters a membrane biological reaction unit, the membrane biological reaction unit is used for carrying out biochemical treatment and physical filtration treatment on the printing and dyeing wastewater treated by the ozone contact oxidation unit, further decomposing micromolecular organic matters in the printing and dyeing wastewater into inorganic matters, removing small-particle-size dirt such as particles, bacteria, most viruses and the like in the printing and dyeing wastewater, and further obtaining standard clear liquid which can be discharged or recycled; and ozone contact oxidation unit still is used for carrying out oxidation treatment to the printing and dyeing waste water after the pretreatment unit treatment and produces the tail gas input membrane biological reaction unit that contains ozone, in order to carry out the aeration to membrane biological reaction unit, in order to improve the decomposition rate of the micro molecule organic matter in the printing and dyeing waste water, utilize the bactericidal action of ozone in the tail gas to blow the brush to disinfect the membrane biological reaction unit simultaneously and wash, the setting of sodium hypochlorite device in traditional membrane biological reaction unit has been saved, the setting of tail gas absorption tower has also been saved simultaneously, thereby the treatment effeciency of membrane biological reaction unit has been improved effectively, reduce the equipment input and save space.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a flow chart of the printing and dyeing wastewater treatment combined equipment of the utility model.
10-pretreatment unit, 20-ozone contact oxidation unit, 30-membrane biological reaction unit, 40-ozone generation unit, 50-anaerobic unit, 60-aerobic unit, 70-regulation unit, 80-precipitation unit and 90-sludge treatment unit.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The following will mainly describe a specific structure of a printing and dyeing wastewater treatment combined apparatus.
Referring to fig. 1, the printing and dyeing wastewater treatment combined equipment according to a preferred embodiment of the present invention includes a pretreatment unit 10, an ozone contact oxidation unit 20, and a membrane biological reaction unit 30, which are connected in sequence, wherein the pretreatment unit 10 is used for physically pretreating printing and dyeing wastewater to be treated; the ozone contact oxidation unit 20 is used for carrying out oxidation treatment on the printing and dyeing wastewater treated by the pretreatment unit 10, and the ozone contact oxidation unit 20 is also used for inputting tail gas containing ozone generated after the printing and dyeing wastewater treated by the pretreatment unit 10 is subjected to oxidation treatment into the membrane biological reaction unit 30 so as to aerate the membrane biological reaction unit 30; the membrane biological reaction unit 30 is used for performing biochemical treatment and physical filtration treatment on the printing and dyeing wastewater treated by the ozone contact oxidation unit 20.
The utility model provides a printing and dyeing wastewater treatment combination equipment includes the preprocessing unit 10, ozone contact oxidation unit 20 and the membrane biological reaction unit 30 that connect gradually, preprocessing unit 10 is used for carrying out the physics preliminary treatment to the printing and dyeing wastewater of treating, and after printing and dyeing wastewater got into preprocessing unit 10, preprocessing unit 10 was used for getting rid of the great suspended substance in the printing and dyeing wastewater, avoided these suspended substances to get into ozone contact oxidation unit 20 and caused the jam to ozone contact oxidation unit 20, influence ozone contact oxidation unit 20's treatment effect; the printing and dyeing wastewater treated by the pretreatment unit 10 enters an ozone contact oxidation unit 20, the ozone contact oxidation unit 20 is used for carrying out oxidation treatment on the printing and dyeing wastewater treated by the pretreatment unit 10 so as to oxidize complex macromolecular organic matters in the printing and dyeing wastewater into biodegradable micromolecular organic matters to improve the biodegradability of the printing and dyeing wastewater, and meanwhile, ammonia nitrogen in the printing and dyeing wastewater can be oxidized and decomposed into nitrogen and water so as to effectively remove the complex macromolecular organic matters and the ammonia nitrogen in the printing and dyeing wastewater and realize secondary purification treatment of the printing and dyeing wastewater; the printing and dyeing wastewater treated by the ozone contact oxidation unit enters a membrane biological reaction unit 30, the membrane biological reaction unit 30 is used for carrying out biochemical treatment and physical filtration treatment on the printing and dyeing wastewater treated by the ozone contact oxidation unit 20 so as to further decompose micromolecular organic matters in the printing and dyeing wastewater treated by the ozone contact oxidation unit 20 into inorganic matters and remove small-particle-size dirt such as particles, bacteria, most viruses and the like in the printing and dyeing wastewater, and the obtained clear solution reaching the standard can be discharged or recycled; in addition, ozone contact oxidation unit 20 is still used for carrying out oxidation treatment to the printing and dyeing wastewater after pretreatment unit 10 and then generating ozone-containing tail gas input membrane biological reaction unit 30, in order to carry out aeration to membrane biological reaction unit 30, in order to improve the decomposition rate of the micro-molecular organic matter in the printing and dyeing wastewater, utilize the bactericidal action of ozone in the tail gas to blow brush membrane biological reaction unit 30 simultaneously and disinfect and wash, the setting of sodium hypochlorite device in traditional membrane biological reaction unit 30 has been saved, the setting of tail gas absorption tower has also been saved simultaneously, thereby the treatment efficiency of membrane biological reaction unit 30 has been improved effectively, reduce equipment input and save space.
Further, in the present embodiment, the pretreatment unit 10 may be, but is not limited to, an air flotation device. More specifically, the air flotation is a process of utilizing highly dispersed micro-bubbles as carriers to adhere larger suspended substances in the printing and dyeing wastewater, so that the micro-bubbles and the suspended substances form a whole, the whole density of the whole is less than that of water, and the whole floats to the water surface, thereby realizing solid-liquid separation. The air floating device can be a horizontal flow type air floating device or an up-flow type air floating device.
Further, in the present embodiment, the pretreatment unit 10 has a water inlet through which the printing and dyeing wastewater to be treated can enter the pretreatment unit 10.
Further, in the present embodiment, the ozone contact oxidizing unit 20 may be an ozone contact oxidizing tower.
Further, in this embodiment, this printing and dyeing wastewater treatment combination equipment still includes the force (forcing) pump, the one end and the ozone contact oxidation unit 20 of force (forcing) pump are connected, the other end and the membrane biological reaction unit 30 of force (forcing) pump are connected, ozone contact oxidation unit 20 carries out oxidation treatment to the printing and dyeing wastewater after the pretreatment unit 10 handles and produces the tail gas that contains ozone and passes through force (forcing) pump pressurization back input membrane biological reaction unit 30 to carry out the aeration to membrane biological reaction unit 30, and then with the decomposition rate that improves the micromolecule organic matter in the printing and dyeing wastewater, utilize the bactericidal effect of ozone in the tail gas to carry out the blow-brush sterilization washing to membrane biological reaction unit 30 simultaneously.
In one embodiment, the dyeing wastewater treatment combined equipment further comprises an ozone generating unit 40, the ozone generating unit 40 is connected with the ozone contact oxidation unit 20, and the ozone generating unit 40 is used for supplying ozone required for oxidation treatment in the ozone contact oxidation unit 20 to the ozone contact oxidation unit 20. Specifically, ozone generated by the ozone generating unit 40 enters from the bottom of the ozone contact oxidation unit 20, and then tail gas containing a small amount of ozone generated by the ozone contact oxidation unit 20 after the printing and dyeing wastewater treated by the pretreatment unit 10 is subjected to oxidation treatment is discharged from the top of the ozone contact oxidation unit 20, is pressurized by a pressurizing pump and then is input into the membrane biological reaction unit 30 so as to aerate the membrane biological reaction unit 30. Specifically, the ozone generating unit 40 may be an ozone generator.
In one embodiment, the dyeing wastewater treatment combination further comprises a gas distribution member, the gas distribution member is disposed at the bottom of the ozone contact oxidation unit 20 and connected to the ozone generation unit 40, and the gas distribution member is used for improving the distribution uniformity of ozone in the ozone contact oxidation unit 20. Specifically, in the present embodiment, the gas distribution member may be, but is not limited to, a titanium plate gas distribution plate (ozone aeration disk).
In one embodiment, the gas distribution member has a plurality of gas distribution holes, and the plurality of gas distribution holes are uniformly distributed on the gas distribution member at intervals, so that ozone generated by the ozone generating unit 40 can be cut into small bubbles when being input into the ozone contact oxidation unit 20, thereby improving the contact reaction efficiency between the printing and dyeing wastewater treated by the pretreatment unit 10 in the ozone contact oxidation unit 20 and ozone generated by the ozone generating unit 40. Specifically, the aperture of each air distribution hole is between 3mm and 25 mm.
In one embodiment, the ozone contact oxidation unit 20 has a water distribution port, the pretreatment unit 10 is connected to the ozone contact oxidation unit 20 through the water distribution port, and the printing and dyeing wastewater treated by the pretreatment unit 10 can be input into the ozone contact oxidation unit 20 through the water distribution port. Specifically, the water distribution port is disposed at the top of the ozone contact oxidation unit 20.
Further, in this embodiment, the water distribution port is a rotary water distribution port, the printing and dyeing wastewater treated by the pretreatment unit 10 is sprayed on the sidewall and the bottom plate of the ozone contact oxidation unit 20 through the rotary water distribution port to form a rotational flow by reflection, the formed rotational flow discharges water to enable the printing and dyeing wastewater without suspended substances to fully contact and react with ozone generated by the ozone generation unit 40, complex macromolecular organic matters in the printing and dyeing wastewater are oxidized into biodegradable micromolecular organic matters through strong oxidizing property of ozone to improve the biodegradability of the printing and dyeing wastewater, and ammonia nitrogen in the printing and dyeing wastewater can be oxidized and decomposed into nitrogen and water. So set up, guarantee that printing and dyeing wastewater does not have the dead angle with ozone reaction zone in the ozone contact oxidation unit 20, fully improved ozone contact oxidation unit 20's utilization ratio, avoided the uneven problem of cloth water in the ozone contact oxidation unit 20 effectively.
Further, in the present embodiment, the chromaticity of the printing and dyeing wastewater can be effectively removed by the ozone having a strong oxidizing property.
Further, in this embodiment, the dyeing wastewater treatment combination equipment further includes a lift pump, one end of the lift pump is connected to the pretreatment unit 10, the other end of the lift pump is connected to the water distribution port of the ozone contact oxidation unit 20, and the dyeing wastewater treated by the pretreatment unit 10 can be sprayed into the ozone contact oxidation unit 20 from the water distribution port on the top of the ozone contact oxidation unit 20 through the lift pump, and then fully contacts and reacts with ozone generated by the ozone generation unit 40.
Further, in this embodiment, the aperture of the water distribution port is between 0.2mm and 2 mm.
Further, in this embodiment, the distance between the water distribution port and the gas distribution member is 1500mm-4000mm, so as to ensure sufficient reaction time between the printing and dyeing wastewater sprayed from the water distribution port and the ozone entering the ozone contact oxidation unit 20 from the gas distribution member.
In one embodiment, an anti-corrosion layer is disposed on the inner wall of the ozone contact oxidation unit 20 to prevent the inner wall of the ozone contact oxidation unit 20 from being oxidized due to the contact between ozone and the inner wall of the ozone contact oxidation unit 20.
In one embodiment, the dyeing wastewater treatment combined equipment further comprises an anaerobic unit 50, wherein the anaerobic unit 50 is arranged between the ozone contact oxidation unit 20 and the membrane biological reaction unit 30; the anaerobic unit 50 is used for carrying out anaerobic denitrification treatment on the printing and dyeing wastewater treated by the ozone contact oxidation unit 20 so as to further remove micromolecular organic matters, nitrate nitrogen and/or nitrite nitrogen in the printing and dyeing wastewater. Specifically, the small-molecule organic matter in the printing and dyeing wastewater treated by the ozone contact oxidation unit 20 is further removed by the action of anaerobic microorganisms (including facultative microorganisms) in the printing and dyeing wastewater under the anaerobic condition in the anaerobic unit 50, and nitrate nitrogen and/or nitrite nitrogen in the printing and dyeing wastewater is converted into nitrogen gas by the action of denitrification treatment microorganisms.
Further, the anaerobic unit 50 is an anaerobic tank or tank.
In one embodiment, the dyeing wastewater treatment combined equipment further comprises an aerobic unit 60, wherein the aerobic unit 60 is arranged between the ozone contact oxidation unit 20 and the membrane biological reaction unit 30; the aerobic unit 60 is used for performing aerobic treatment and nitrification treatment on the printing and dyeing wastewater treated by the ozone contact oxidation unit 20 to further remove micromolecular organic matters and ammonia nitrogen in the printing and dyeing wastewater. Specifically, under the condition of oxygenation in the aerobic unit 60, the micromolecular organic matters in the printing and dyeing wastewater are further decomposed into inorganic matters (such as water and carbon dioxide) through the action of aerobic microorganisms in the printing and dyeing wastewater, so that the organic matters in the printing and dyeing wastewater are effectively removed. Meanwhile, the residual ammonia nitrogen in the printing and dyeing wastewater is converted into nitrate nitrogen and/or nitrite nitrogen under the action of the nitrification microorganisms, so that the ammonia nitrogen in the printing and dyeing wastewater is effectively removed. Further, the aerobic unit 60 is an aerobic tank or an aerobic tank.
Further, in the present embodiment, the aerobic unit 60 is disposed between the anaerobic unit 50 and the membrane biological reaction unit 30; the aerobic unit 60 is used for performing aerobic treatment and nitrification treatment on the printing and dyeing wastewater treated by the anaerobic unit 50.
Specifically, in the present embodiment, biological fillers are respectively provided in the anaerobic unit 50 and the aerobic unit 60, the biological fillers in the anaerobic unit 50 are used for growth of anaerobic microorganisms and denitrification microorganisms, and the biological fillers in the aerobic unit 60 are used for growth of aerobic microorganisms and nitrification microorganisms.
In one embodiment, the dyeing wastewater treatment combined equipment further comprises a regulating unit 70, and the regulating unit 70 is used for controlling the amount of the dyeing wastewater. Specifically, the adjusting unit 70 is disposed between the anaerobic unit 50 and the aerobic unit 60, and the adjusting unit 70 is configured to receive the printing and dyeing wastewater treated by the anaerobic unit 50, and control the amount of the printing and dyeing wastewater input to the aerobic unit 60 to balance the amount of the printing and dyeing wastewater input to the aerobic unit 60, so as to ensure that the amount of the printing and dyeing wastewater input to the aerobic unit 60 is stable, so that the subsequent treatment equipment can work normally, and the stable operation of the printing and dyeing wastewater treatment is ensured. Specifically, the conditioning unit 70 may be a conditioning tank or a conditioning box.
Further, the pH of the printing and dyeing wastewater treated by the anaerobic unit 50 may change, and the pH of the printing and dyeing wastewater treated by the anaerobic unit 50 may be adjusted by the adjusting unit 70 to be neutral, so as to balance the quality of the printing and dyeing wastewater. More specifically, the pH of the printing and dyeing wastewater is made neutral by sprinkling a pH adjusting agent into the adjusting unit 70.
In an embodiment, the printing and dyeing wastewater treatment combination equipment further comprises a precipitation unit 80, the precipitation unit 80 is connected with the membrane biological reaction unit 30, and the precipitation unit 80 is used for performing physical precipitation treatment on the printing and dyeing wastewater treated by the membrane biological reaction unit 30 to remove sediments in the printing and dyeing wastewater, so that the printing and dyeing wastewater is discharged up to the standard.
In an embodiment, the dyeing wastewater treatment combination further includes a sludge treatment unit 90, the sludge treatment unit 90 is connected to both the pretreatment unit 10 and the precipitation unit 80, and the sludge treatment unit 90 is configured to perform dehydration and drying treatment on suspended substances separated by the pretreatment unit 10 and precipitates generated by the precipitation unit 80. Specifically, suspended matters separated after the pretreatment unit 10 treats the printing and dyeing wastewater and precipitates generated after the treatment of the printing and dyeing wastewater by the precipitation unit 80 can be discharged to the sludge treatment unit 90 for dehydration and drying treatment and then transported outside for harmless treatment. Specifically, the sludge treatment unit 90 may be, but is not limited to, a plate and frame filter press.
The utility model provides a printing and dyeing wastewater treatment combination equipment's specific use as follows:
printing and dyeing wastewater is input into a pretreatment unit 10 through a water inlet to separate suspended substances in the printing and dyeing wastewater, effluent of the pretreatment unit 10 is lifted to an ozone contact oxidation unit 20 through a lift pump to be subjected to oxidation treatment, effluent of the ozone contact oxidation unit 20 enters an anaerobic unit 50 to be subjected to anaerobic denitrification treatment, effluent of the anaerobic unit 50 enters an adjusting unit 70 to be subjected to water quantity adjustment, effluent of the adjusting unit 70 enters an aerobic unit 60 to be subjected to aerobic treatment and nitrification treatment, effluent of the aerobic unit 60 enters a membrane biological reaction unit 30 to be subjected to biochemical treatment and physical filtration treatment, so that up-to-standard clear liquid is obtained to be discharged or recycled, simultaneously, tail gas containing ozone generated after oxidation treatment of the printing and dyeing wastewater treated by the pretreatment unit 10 by the ozone contact oxidation unit 20 is pressurized by a pressurizing pump and then is input into a membrane biological reaction unit 30 to perform aeration on the membrane biological reaction unit 30, the membrane biological reaction unit 30 is fully cleaned by blowing, brushing and sterilizing by utilizing the sterilization effect of the ozone in the tail gas.
The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any person skilled in the art should also realize that such equivalent changes and modifications can be made without departing from the spirit and principles of the present invention. Moreover, it should be noted that the present invention is not limited to the above-mentioned overall application, and the technical features described in the specification can be selected to be adopted alone or be combined together according to actual needs, so that the present invention covers other combinations and specific applications related to the present invention.
Claims (10)
1. A printing and dyeing wastewater treatment combination equipment is characterized by comprising: a pretreatment unit, an ozone contact oxidation unit and a membrane biological reaction unit which are connected in sequence,
the pretreatment unit is used for carrying out physical pretreatment on the printing and dyeing wastewater to be treated;
the ozone contact oxidation unit is used for carrying out oxidation treatment on the printing and dyeing wastewater treated by the pretreatment unit, and the ozone contact oxidation unit is also used for inputting tail gas containing ozone generated after the printing and dyeing wastewater treated by the pretreatment unit is subjected to oxidation treatment into the membrane biological reaction unit so as to aerate the membrane biological reaction unit;
the membrane biological reaction unit is used for carrying out biochemical treatment and physical filtration treatment on the printing and dyeing wastewater treated by the ozone contact oxidation unit.
2. The dyeing wastewater treatment combination according to claim 1, further comprising an ozone generation unit connected to the ozone contact oxidation unit, wherein the ozone generation unit is configured to supply ozone required for oxidation treatment of the dyeing wastewater by the ozone contact oxidation unit to the ozone contact oxidation unit.
3. The dyeing wastewater treatment combination according to claim 2, further comprising a gas distribution member disposed at the bottom of the ozone contact oxidation unit and connected to the ozone generation unit, the gas distribution member being configured to improve the uniformity of distribution of ozone in the ozone contact oxidation unit.
4. The combined printing and dyeing wastewater treatment equipment according to claim 3, wherein the gas distribution member has a plurality of gas distribution holes, and the plurality of gas distribution holes are uniformly arranged on the gas distribution member at intervals.
5. The dyeing wastewater treatment combination equipment according to claim 1, wherein the ozone contact oxidation unit is provided with a water distribution port, the pretreatment unit is connected with the ozone contact oxidation unit through the water distribution port, and the dyeing wastewater treated by the pretreatment unit can be input into the ozone contact oxidation unit through the water distribution port.
6. The printing and dyeing wastewater treatment combination according to claim 1, further comprising an anaerobic unit disposed between the ozone contact oxidation unit and the membrane bioreaction unit; the anaerobic unit is used for carrying out anaerobic denitrification treatment on the printing and dyeing wastewater treated by the ozone contact oxidation unit.
7. The printing and dyeing wastewater treatment combination according to claim 1, further comprising an aerobic unit disposed between the ozone contact oxidation unit and the membrane bioreaction unit; the aerobic unit is used for carrying out aerobic treatment and nitration treatment on the printing and dyeing wastewater treated by the ozone contact oxidation unit.
8. The printing and dyeing wastewater treatment combined equipment according to claim 1, further comprising an adjusting unit for adjusting the amount of the printing and dyeing wastewater.
9. The printing and dyeing wastewater treatment combination device according to claim 1, further comprising a precipitation unit, wherein the precipitation unit is connected with the membrane biological reaction unit, and the precipitation unit is used for performing physical precipitation treatment on the printing and dyeing wastewater treated by the membrane biological reaction unit.
10. The dyeing wastewater treatment combination device according to claim 9, further comprising a sludge treatment unit, wherein the sludge treatment unit is connected with the pretreatment unit and the precipitation unit, and is used for dewatering and drying suspended substances separated by the pretreatment unit and precipitates generated by the precipitation unit.
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| CN202120509312.0U CN214528611U (en) | 2021-03-10 | 2021-03-10 | Printing and dyeing wastewater treatment combination equipment |
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| CN202120509312.0U CN214528611U (en) | 2021-03-10 | 2021-03-10 | Printing and dyeing wastewater treatment combination equipment |
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| CN214528611U true CN214528611U (en) | 2021-10-29 |
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