CN213202741U - MTO effluent disposal system - Google Patents
MTO effluent disposal system Download PDFInfo
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- CN213202741U CN213202741U CN202021891114.7U CN202021891114U CN213202741U CN 213202741 U CN213202741 U CN 213202741U CN 202021891114 U CN202021891114 U CN 202021891114U CN 213202741 U CN213202741 U CN 213202741U
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Abstract
The utility model relates to a MTO effluent disposal system, including the oil separation sedimentation tank, homogeneity equalizing basin, dissolve gas air supporting pond, integration biological reaction pond, high density sedimentation tank, aeration biological filter, mud reservoir and the sludge dewatering that connect in order within a definite time, the delivery port that separates oil sedimentation tank links to each other with the water inlet of homogeneity equalizing basin, and the water inlet that dissolves gas air supporting pond links to each other with the delivery port of homogeneity equalizing basin, the water inlet of integration biological reaction pond with the delivery port that dissolves gas air supporting pond links to each other, the water inlet of high density sedimentation tank with the delivery port of integration biological reaction pond links to each other, separate the mud export of oil sedimentation tank, dissolve gas air supporting pond, integration biological reaction pond and high density sedimentation tank with the mud import of mud reservoir links to each other, mud reservoir with link to each other between the sludge dewatering. The utility model provides an MTO wastewater treatment system which has strong impact resistance and small occupied area and can improve the drainage quality.
Description
Technical Field
The utility model relates to an MTO effluent disposal system in sewage treatment device.
Background
The MTO device mainly comprises a reaction regeneration system, an olefin separation system and a quenching water washing and stripping system, wherein the waste water discharged by the MTO device is named as MTO waste water, and the MTO waste water is waste water generated by producing low-carbon olefins by using methanol synthesized from coal base and the like as a raw material. According to an MTO device, amplified high-concentration organic wastewater is discharged from the bottom of a water vapor tower and the bottom of a quenching tower in a quenching water washing and stripping system, and the wastewater contains low-carbon hydrocarbons and low-carbon oxygen organic matters, methanol, methyl ether, catalyst fine powder, sodium acetate, sodium hydroxide long-chain alkyl and aromatic hydrocarbon substances, partial aldehydes, ketones and other organic matters. It is characterized in that the oil is high in COD value, contains partial substances which are difficult to biodegrade and toxic, has large fluctuation of discharged water amount, and belongs to one of waste water which is difficult to treat.
The traditional MTO wastewater treatment process flow is as follows: MTO waste water → heat exchanger → equalizing basin → coagulating sedimentation basin → SBR reaction basin → coagulating sedimentation basin → discharge. MTO waste water obtains the unchangeable MTO waste water of concentration at first after the heat exchanger cooling, then the pump sending to the equalizing basin, adjusts the quality of water yield, and the equalizing basin is gone out water and is handled through coagulating sedimentation, gets rid of the colloid and the suspended solid in water, and the suspending is congealed the sedimentation tank and is passed through SBR reaction tank, gets rid of aquatic organic pollutant, and SBR reaction tank goes out water and gets into coagulating sedimentation tank, and further discharge behind getting rid of suspended solid, the COD.
Such conventional MTO wastewater treatment facilities have the following problems: the pretreatment of the MTO wastewater in the early stage of the SBR reaction tank is incomplete, and suspended matters and oil content are high, so that the conditions of a subsequent treatment process cannot be ensured; the processes of aeration, anaerobic reaction, sedimentation and the like in the SBR reaction tank are carried out according to the time sequence, the sludge concentration is low, the tank capacity is large, the SBR reaction tank cannot realize continuous water inlet, the impact resistance is poor, the treatment effect is not ideal, in order to meet the production requirement, the number of the SBR reaction tanks is not less than two, the number of equipment is increased, and the investment cost and the operation cost are increased; the single coagulating sedimentation tank can not meet the reclaimed water recycling standard.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an MTO effluent disposal system that impact resistance is strong, area is little to can improve drainage quality.
The technical proposal of the MTO wastewater treatment system of the utility model is that:
an MTO wastewater treatment system comprises an oil-separating sedimentation tank, a homogeneous regulating tank, a dissolved air floatation tank, an integrated biological reaction tank, a high-density sedimentation tank, an aeration biological filter tank, a sludge storage tank, a sludge dewatering room and an oil-separating sedimentation tank, the dissolved air flotation tank, the integrated biological reaction tank and the high-density sedimentation tank all comprise a water inlet, a water outlet and a sludge outlet, the water outlet of the oil separation sedimentation tank is connected with the water inlet of the homogenizing adjusting tank, the water inlet of the dissolved air flotation tank is connected with the water outlet of the homogenizing adjusting tank, the water inlet of the integrated biological reaction tank is connected with the water outlet of the dissolved air flotation tank, the water inlet of the high-density sedimentation tank is connected with the water outlet of the integrated biological reaction tank, the sludge outlets of the oil separation sedimentation tank, the dissolved air flotation tank, the integrated biological reaction tank and the high-density sedimentation tank are connected with the sludge inlet of the sludge storage tank, and the sludge storage tank is connected with the sludge dewatering room.
Furthermore, sludge outlets of the oil separation sedimentation tank, the dissolved air floatation tank, the integrated biological reaction tank and the high-density sedimentation tank are respectively connected with a sludge inlet of the sludge storage tank through respective corresponding sludge pipelines, and each sludge pipeline is provided with a pumping device.
And further, the system also comprises a heat exchanger with a water outlet connected with the water inlet of the oil separation sedimentation tank, and an inlet of the oil separation sedimentation tank is connected with an MTO wastewater direct-connection pipeline used for being connected with MTO wastewater.
Furthermore, a water outlet of the sludge dewatering room is connected with a water inlet of the homogenizing adjusting tank.
Furthermore, the biological aerated filter also comprises a backwashing wastewater outlet, and the backwashing wastewater outlet is connected with the water inlet of the homogeneous regulating tank.
Furthermore, a regulating tank stirring device is arranged in the homogenizing regulating tank.
Furthermore, a sedimentation tank stirring device is arranged in the oil separation sedimentation tank.
Further, a gas floatation tank stirring device is arranged in the dissolved gas floatation tank.
Further, the dissolved air flotation tank is arranged at the top of the homogenizing adjusting tank.
Furthermore, the integrated biological reaction tank comprises a tank body, an anaerobic zone, a low-oxygen aeration zone and a sedimentation zone which are sequentially and adjacently arranged and communicated are arranged in the tank body, the integrated biological reaction tank further comprises a sludge return channel connected with the sedimentation zone, the sludge return channel is positioned at one side of the anaerobic zone, the low-oxygen aeration zone and the sedimentation zone, a water inlet of the anaerobic zone is communicated with the sludge return channel, the low-oxygen aeration zone comprises a first low-oxygen aeration zone and a second low-oxygen aeration zone, the first low-oxygen aeration zone and the second anaerobic zone are adjacently arranged, an air flow pushing zone for pushing flow to the first low-oxygen aeration zone is arranged at one side of the first low-oxygen aeration zone far away from the sludge return channel, a separated water collecting tank is arranged on the sedimentation zone, and a water outlet of the separated water collecting tank forms a water outlet of the integrated biological reaction tank, the water inlet of the anaerobic zone forms the water inlet of the integrated biological reaction tank.
The utility model has the advantages that: the utility model discloses in abandon among the prior art and utilized SBR reaction tank treatment, adopt integration biological treatment pond to utilize the microorganism to decompose the pollutant wherein under the low oxygen state, integration biological treatment pond compares with SBR reaction tank, under the same BOD load, the pond of integration biological treatment pond holds littleer, can reduce area's use, and integration biological treatment pond control low dissolved oxygen and have the large circulation ratio, make microorganism growth slow, lead to the age of a pollution increase, make controllable sludge concentration in the system increase, the microorganism quantity is big, thereby the volume load and the shock resistance of system strengthen greatly; before MTO wastewater enters an integrated biological treatment tank, the MTO wastewater is treated by an oil separation sedimentation tank, a homogenizing adjustment tank and a dissolved air floatation tank, the oil separation sedimentation tank can demulsify and convert emulsified oil in the MTO wastewater into floatable oil, the floatable oil is collected, the subsequent steps can be favorably carried out, and the dissolved air floatation tank can remove dispersed oil and suspended matters in the MTO wastewater, so that the treatment effect of the subsequent steps is ensured; MTO wastewater discharged from the integrated biological treatment tank is treated by a high-density sedimentation tank and a biological aerated filter, so that the stable standard of the discharged water can be ensured; the sludge outlets of the oil separation sedimentation tank, the dissolved air flotation tank, the integrated biological reaction tank and the high-density sedimentation tank are connected with the sludge inlet of the sludge storage tank, the sludge storage tank stores the residual sludge of the integrated biological treatment tank, the materialized sludge generated by the oil separation sedimentation tank, the materialized sludge generated by the high-density sedimentation tank and the scum generated by the dissolved air flotation tank, and then the sludge is dehydrated through the dehydration room, so that the problem of recycling the generated sludge is solved, and the continuous and efficient work of the equipment is ensured.
Drawings
FIG. 1 is a block diagram of an embodiment of the present invention showing the structure of an MTO wastewater treatment system;
FIG. 2 is a schematic view of the integrated biological treatment tank of FIG. 1;
in the figure: 1. the system comprises a heat exchanger, 2, an oil separation sedimentation tank, 3, a homogeneous regulating tank, 4, a dissolved air floatation tank, 5, an integrated biological reaction tank, 6, a high-density sedimentation tank, 7, an aeration biological filter tank, 8, a sludge storage tank, 9, a sludge dewatering room, 10, an MTO wastewater direct connection pipeline, 11, a sludge pipeline, 12, a backwashing wastewater pipeline, 501, an anaerobic zone, 502, a first overflowing channel, 503, a first low-oxygen aeration zone, 504, a second low-oxygen aeration zone, 505, an air thrust zone, 506, a sedimentation zone, 507, a second overflowing channel, 508, a third overflowing channel, 509, a sewage inlet, 510, a fourth overflowing channel, 511, a sludge refluxing channel, 521, a residual sludge discharge channel and 513.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It is to be noted that, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The following describes in detail various embodiments of the present invention with reference to the accompanying drawings.
An MTO sewage treatment system comprises a heat exchanger 1, an oil separation sedimentation tank 2, a homogenizing adjusting tank 3, a dissolved air floatation tank 4, an integrated biological treatment tank 5, a high-density sedimentation tank 6 and an aeration biological filter tank 7 which are sequentially arranged, and further comprises a sludge storage tank 8 and a sludge dewatering room 9. All the above parts belong to the prior art.
The water outlet of the heat exchanger 1 is connected with the water inlet of the oil separation sedimentation tank 2, and the water inlet of the oil separation sedimentation tank 2 is also connected with an MTO wastewater direct connection pipeline 10 used for being connected with MTO wastewater. The water outlet of the oil-separating sedimentation tank 2 is connected with the water inlet of the homogeneous regulating tank 3, the water outlet of the homogeneous regulating tank 3 is connected with the water inlet of the dissolved air flotation tank 4, the water outlet of the dissolved air flotation tank 4 is connected with the water inlet of the integrated biological reaction tank 5, the water outlet of the integrated biological reaction tank 5 is connected with the water inlet of the high-density sedimentation tank 6, and the water outlet of the high-density sedimentation tank 6 is connected with the water inlet of the aeration biological filter 7. In this embodiment, be provided with air supporting pond agitating unit in the dissolved air supporting pond, be provided with equalizing basin agitating unit in the homogeneity equalizing basin, be provided with sedimentation tank agitating unit in the oil-proof sedimentation tank, the dissolved air supporting pond sets up the top at the homogeneity equalizing basin.
In addition, the sludge outlets of the oil separation sedimentation tank 2, the dissolved air flotation tank 4, the integrated biological reaction tank 5 and the high-density sedimentation tank 6 are connected with the sludge inlet of the sludge storage tank 8, specifically, the sludge storage tank is connected with a sludge dewatering room, the sludge outlets of the oil separation sedimentation tank, the dissolved air flotation tank, the integrated biological reaction tank and the high-density sedimentation tank are respectively connected with the sludge inlet of the sludge storage tank 8 through the corresponding sludge pipelines 11, and each sludge pipeline is provided with a pumping device. The water outlet of the sludge dewatering room is connected with the water inlet of the homogenizing adjusting tank. The biological aerated filter 7 also comprises a backwashing wastewater outlet which is connected with the water inlet of the homogenizing adjusting tank 3 through a backwashing wastewater pipeline 12.
The integrated biological reaction tank comprises a tank body, wherein an anaerobic zone 501, a low-oxygen aeration zone and a sedimentation zone 506 which are sequentially and adjacently arranged and communicated are arranged in the tank body, the integrated biological reaction tank further comprises a sludge return channel 501 connected with the sedimentation zone, the sludge return channel 501 is positioned at one side of the anaerobic zone, the low-oxygen aeration zone and the sedimentation zone, an anaerobic zone stirring device is arranged in the anaerobic zone, and a water inlet of the anaerobic zone is communicated with the sludge return channel. Preferably, the volume load of the low-oxygen aeration area is 1.0-1.5 kgCOD/m for carrying out labor year, preferably, the sedimentation area is in the form of an inclined tube sedimentation tank, and preferably, the surface load is 1.0-1.5 m for carrying out labor year/square meter.
The low oxygen aeration zone includes first low oxygen aeration zone 503 and second low oxygen aeration zone 504, first low oxygen aeration zone with the adjacent setting in second anaerobic zone, an intermediate wall is shared with first low oxygen aeration zone in the anaerobic zone, is provided with the first passageway 502 that overflows that communicates anaerobic zone and first low oxygen aeration zone on the intermediate wall, and the effect of first passageway 502 that overflows is as the water inlet in first low oxygen aeration zone. The first hypoxia aeration zone and the second hypoxia aeration zone share one intermediate partition wall, and a second overflowing channel 507 communicating the first hypoxia aeration zone with the second hypoxia aeration zone is arranged on the intermediate partition wall.
An air flow pushing area 505 used for pushing flow to the first low-oxygen aeration area is arranged on one side, far away from the sludge return channel, of the first low-oxygen aeration area, the air flow pushing area 505 is connected with the second low-oxygen aeration area 504 through a third flow channel 508, the air flow pushing area is arranged at one end of the first low-oxygen aeration area, and mixed liquid flowing back in the second low-oxygen aeration area can be pushed into the first low-oxygen aeration area.
The settling zone 506 and the second low-oxygen aeration zone share a middle partition wall, a fourth overflowing channel 510 for communicating the second low-oxygen aeration zone with the settling zone is arranged on the middle partition wall, a separated water collecting tank 513 is arranged on the settling zone, a water outlet of the separated water collecting tank forms a water outlet of the integrated biological reaction tank, and a water inlet of the anaerobic zone, namely a sewage inlet, forms a water inlet of the integrated biological reaction tank. And the sludge return channel is provided with a residual sludge discharge channel 512, the residual sludge discharge channel forms a sludge outlet of the integrated biological reaction tank, the residual sludge discharge channel is communicated with a sludge storage tank barrel pipeline, and residual sludge is conveyed to the sludge storage tank through the residual sludge discharge channel for treatment. Be provided with separation water collecting vat 513 on the settling zone 506, the delivery port of separation water collecting vat 513 is connected with the water inlet of high density sedimentation 6.
In the utility model, the incoming water temperature of MTO sewage can be reduced through the heat exchanger 1, the proper water inlet temperature is ensured, and the use effect and the treatment effect of a subsequent treatment unit are not influenced; the oil separation sedimentation tank 2 is arranged for demulsifying the emulsified oil into floatable oil and collecting the floatable oil, thereby being more beneficial to the subsequent steps; the dissolved air floatation tank can remove dispersed oil and suspended matters in the MTO wastewater, so that the treatment effect of the subsequent steps is ensured; the adjusting tank stirring device in the homogenizing adjusting tank can improve the sewage adjusting efficiency; carry out integration biological treatment to MTO waste water through integration biological treatment pond, not only can save the area of system, but also can make waste water have great internal recycle ratio, improve mud concentration, and then improve reaction efficiency, carry out bigger degree's decomposition to organic matter and ammonia nitrogen in the sewage. The sludge storage tank 8 is used for storing the residual sludge of the integrated biological treatment tank 5, the materialized sludge generated by the oil separation sedimentation tank 2, the materialized sludge generated by the high-density sedimentation tank 6 and the scum generated by the dissolved air flotation tank 4, then the sludge is dehydrated through the dehydration room 9, the filtrate generated after dehydration returns to the homogenizing and adjusting tank 3 for treatment, and the filter cake is delivered outside to solve the recycling problem of the generated sludge, so that the packaging equipment operates efficiently.
The above embodiments are only embodiments of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made in the specification and drawings or directly or indirectly applied to other related technical fields are included in the protection scope of the present invention.
Claims (10)
1. An MTO wastewater treatment system, comprising: comprises an oil-separating sedimentation tank, a homogenizing adjusting tank, a dissolved air floatation tank, an integrated biological reaction tank, a high-density sedimentation tank, an aeration biological filter tank, a sludge storage tank, a sludge dewatering room and an oil-separating sedimentation tank, the dissolved air flotation tank, the integrated biological reaction tank and the high-density sedimentation tank all comprise a water inlet, a water outlet and a sludge outlet, the water outlet of the oil separation sedimentation tank is connected with the water inlet of the homogenizing adjusting tank, the water inlet of the dissolved air flotation tank is connected with the water outlet of the homogenizing adjusting tank, the water inlet of the integrated biological reaction tank is connected with the water outlet of the dissolved air flotation tank, the water inlet of the high-density sedimentation tank is connected with the water outlet of the integrated biological reaction tank, the sludge outlets of the oil separation sedimentation tank, the dissolved air flotation tank, the integrated biological reaction tank and the high-density sedimentation tank are connected with the sludge inlet of the sludge storage tank, and the sludge storage tank is connected with the sludge dewatering room.
2. The MTO wastewater treatment system of claim 1, wherein: the sludge outlets of the oil-separating sedimentation tank, the dissolved air flotation tank, the integrated biological reaction tank and the high-density sedimentation tank are respectively connected with the sludge inlet of the sludge storage tank through respective corresponding sludge pipelines, and each sludge pipeline is provided with a pumping device.
3. The MTO wastewater treatment system according to claim 1, wherein: the system also comprises a heat exchanger with a water outlet connected with the water inlet of the oil separation sedimentation tank, and an inlet of the oil separation sedimentation tank is connected with an MTO wastewater direct-connection pipeline connected with MTO wastewater.
4. The MTO wastewater treatment system according to claim 1, wherein: and a water outlet of the sludge dewatering room is connected with a water inlet of the homogenizing adjusting tank.
5. The MTO wastewater treatment system according to claim 1, wherein: the biological aerated filter also comprises a backwashing wastewater outlet which is connected with the water inlet of the homogeneous regulating tank.
6. The MTO wastewater treatment system according to claim 1, wherein: and a regulating tank stirring device is arranged in the homogenizing regulating tank.
7. The MTO wastewater treatment system according to claim 1, wherein: and a sedimentation tank stirring device is arranged in the oil separation sedimentation tank.
8. The MTO wastewater treatment system according to claim 1, wherein: and an air floatation tank stirring device is arranged in the dissolved air floatation tank.
9. The MTO wastewater treatment system according to claim 1 or 7, wherein: the dissolved air floatation tank is arranged at the top of the homogenizing adjusting tank.
10. The MTO wastewater treatment system according to any one of claims 1 to 8, wherein: the integrated biological reaction tank comprises a tank body, an anaerobic zone, a low-oxygen aeration zone and a sedimentation zone which are sequentially and adjacently arranged and communicated are arranged in the tank body, the integrated biological reaction tank also comprises a sludge return channel connected with the sedimentation zone, the sludge return channel is positioned at one side of the anaerobic zone, the low-oxygen aeration zone and the sedimentation zone, the water inlet of the anaerobic zone is communicated with the sludge return channel, the low-oxygen aeration zone comprises a first low-oxygen aeration zone and a second low-oxygen aeration zone, the first low-oxygen aeration zone and the second anaerobic zone are adjacently arranged, an air flow pushing area used for pushing flow to the first low-oxygen aeration area is arranged on one side of the first low-oxygen aeration area, which is far away from the sludge return channel, a separated water collecting tank is arranged on the sedimentation area, the water outlet of the separated water collecting tank forms the water outlet of the integrated biological reaction tank, and the water inlet of the anaerobic zone forms the water inlet of the integrated biological reaction tank.
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| CN202021891114.7U CN213202741U (en) | 2020-09-02 | 2020-09-02 | MTO effluent disposal system |
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| CN202021891114.7U CN213202741U (en) | 2020-09-02 | 2020-09-02 | MTO effluent disposal system |
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| CN213202741U true CN213202741U (en) | 2021-05-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115557607A (en) * | 2022-08-31 | 2023-01-03 | 达斯玛环境科技（北京）有限公司 | Integrated biological reaction tank system and method |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115557607A (en) * | 2022-08-31 | 2023-01-03 | 达斯玛环境科技（北京）有限公司 | Integrated biological reaction tank system and method |
| CN115557607B (en) * | 2022-08-31 | 2024-02-23 | 达斯玛环境科技（北京）有限公司 | Integrated biological reaction tank system and method |
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