CN214571387U

CN214571387U - Acrylic acid emulsion waste water processing system

Info

Publication number: CN214571387U
Application number: CN202120236137.2U
Authority: CN
Inventors: 温贝贝; 黄凌涛; 程凯
Original assignee: Anhui Wanxin Environmental Technology Co ltd
Current assignee: Anhui Kexin Environmental Protection Co.,Ltd.
Priority date: 2021-01-28
Filing date: 2021-01-28
Publication date: 2021-11-02
Anticipated expiration: 2031-01-28

Abstract

The utility model discloses an acrylic acid emulsion waste water processing system, its characterized in that includes oil removal collecting pit, breakdown of emulsion reaction pond, dewatering device, equalizing basin, hydrolysis-acidification pond, one-level good oxygen pond, well heavy pond, second grade AO pond, coagulating sedimentation tank, play pond, sludge thickening dewatering device and total controlling device, and oil removal collecting pit, sludge thickening dewatering device are well the mud pond, the equalizing basin is connected, and sludge impoundment, breakdown of emulsion reaction pond are connected among the sludge thickening dewatering device. The utility model has low input cost, and realizes the great removal of organic pollutants and the great reduction of COD through the centrifugation after emulsion breaking; the biological treatment process carries out biochemical treatment, so that the operation cost can be greatly reduced; the filter pressing dehydration is carried out after the oil sludge is tempered, so that hazardous waste is reduced, the sludge treatment cost is reduced, the biochemical sludge amount can be reduced by the hydrolysis acidification tank, the removal of easily degradable COD is realized by the hydrolysis acidification and the first-stage aerobic tank, and the removal of difficultly degradable characteristic pollutants is realized by the contact oxidation method in the second-stage O tank.

Description

Acrylic acid emulsion waste water processing system

Technical Field

The utility model relates to an acrylic acid emulsion waste water treatment field specifically belongs to an acrylic acid emulsion waste water treatment system.

Background

The acrylic emulsion is a chemical with wide applicability, meets the requirement of environmental protection due to no toxicity, no stimulation and no harm to human body, has the characteristics of excellent luster and transparency and good anti-adhesion performance, and is widely used in the fields of coating, plastics, building materials, textiles, paper processing and the like. During the production and use of acrylic emulsion, the cleaning of storage tanks, pipes, equipment, etc. can generate acrylic emulsion waste water. The acrylic emulsion wastewater is uniform slurry-like colloid, COD_CrUp to 40000mg/L, the B/C ratio is only 0.01. The acrylic emulsion wastewater has complex water quality components and contains benzene, alcohol, lipid, acrylic acid, organic auxiliary agent, inorganic auxiliary agent, ammonia nitrogen and the like. The standard discharge treatment of acrylic emulsion wastewater is a great technical problem facing China at present.

The acrylic emulsion waste water is usually treated by catalytic oxidation, air-float, electrocoagulation, iron-carbon micro-electrolysis, etc., and the acrylic emulsion waste water is mixed with other waste water having high biodegradability and then biologically treated in industry. When the current common treatment system for acrylic emulsion wastewater is in practical use, the following problems exist: 1, when a large amount of advanced oxidation is adopted as a treatment process in a common treatment system for acrylic emulsion wastewater, the investment and operation costs are high, the sludge production amount is large, and the later-stage sludge treatment cost is high; 2, when a common treatment system for acrylic emulsion wastewater adopts a catalytic oxidation method, an iron-carbon micro-electrolysis method and other treatment processes, the treated effluent has high salinity, and impacts a subsequent biochemical system; 3, the implementation of the discharge standard of synthetic resin industrial pollutants (GB 31572-2015) has stricter requirements on the discharge of characteristic pollutants styrene and emulsion wastewater, and the treatment system of the acrylic emulsion wastewater at the present stage has poor treatment effect on the characteristic pollutants in the acrylic emulsion wastewater and cannot meet the discharge requirements. In order to solve the problems, the company independently develops, designs and manufactures an acrylic emulsion production wastewater treatment system according to practical use requirements.

SUMMERY OF THE UTILITY MODEL

The utility model provides an acrylic acid emulsion waste water processing system, through the whole optimal design to oil removal collecting pit, breakdown of emulsion reaction pond, dewatering device, equalizing basin, hydrolysis-acidification pool, one-level good oxygen pond, well heavy pond, second grade AO pond, coagulating sedimentation tank, effluent water sump, air feeder, sludge thickening dewatering device and total controlling device, can solve the problem of mentioning in the above-mentioned background art. The utility model has low input cost, and realizes the great removal of organic pollutants and the great reduction of COD through the centrifugation after emulsion breaking; the biological treatment process carries out biochemical treatment, so that the operation cost can be greatly reduced; the filter pressing dehydration is carried out after the oil sludge is tempered, so that hazardous waste is reduced, the sludge treatment cost is reduced, the biochemical sludge amount can be reduced by the hydrolysis acidification tank, the removal of easily degradable COD is realized by the hydrolysis acidification and the first-stage aerobic tank, and the removal of difficultly degradable characteristic pollutants is realized by the contact oxidation method in the second-stage O tank.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a system for treating wastewater generated in acrylic emulsion production is characterized by comprising an oil separation collecting tank, a demulsification reaction tank, a dehydration device, an adjusting tank, a hydrolysis acidification tank, a primary aerobic tank, a middle sedimentation tank, a secondary AO tank, a coagulating sedimentation tank, a water outlet tank, an air supply device, a sludge concentration dehydration device and a master control device, wherein the oil separation collecting tank, the sludge tank and the adjusting tank in the sludge concentration dehydration device are connected into a whole, the sludge tank and the demulsification reaction tank in the sludge concentration dehydration device are connected into a whole, the hydrolysis acidification tank, the primary aerobic tank, the middle sedimentation tank, the secondary AO tank, the coagulating sedimentation tank and the water outlet tank are connected into a whole, the oil separation collecting tank is provided with the oil separation tank, the collecting tank, a slag scraper and a collecting tank lifting pump, the collecting tank lifting pump is arranged on the outer side of the top of the collecting tank, the collecting tank is connected with a demulsification tank in a demulsification reaction tank through a collecting tank lifting pump and a pipeline, the sludge tank in the sludge concentration dehydration device is positioned on the right side of the oil separation tank, the oil separation tank is communicated with the top of the sludge tank in the sludge concentration dehydration device, the regulating tank is provided with a regulating tank body, a regulating tank submersible mixer and a regulating tank waste water delivery pump, the regulating tank body is positioned on the right side of the sludge tank in the sludge concentration dehydration device, the regulating tank submersible mixer is arranged on the lower part of the inner side of the regulating tank body, the regulating tank waste water delivery pump is arranged on the outer side of the top of the regulating tank body, the regulating tank body is connected with a hydrolysis acidification tank in a hydrolysis acidification tank through the regulating tank waste water delivery pump and the pipeline, the demulsification reaction tank is provided with a demulsification tank, a coagulation tank, an intermediate tank, a demulsification mixer, a demulsification tank, a demulsification barrel, a demulsifier dosing mixer, a demulsification metering pump, a coagulating mixer, a coagulant dosing barrel and a demulsification tank, A coagulant adding stirrer, a first coagulant adding metering pump, a middle pool stirrer and a demulsification wastewater conveying pump, wherein the demulsification pool, the coagulation pool and the middle pool are sequentially connected from left to right, the demulsification stirrer is arranged on the upper part of the demulsification pool, the coagulation stirrer is arranged on the upper part of the coagulation pool, the middle pool stirrer is arranged on the upper part of the middle pool, the demulsifier adding stirrer is arranged on a demulsifier adding barrel, the demulsifier adding barrel is connected with the demulsification pool through a demulsifier adding metering pump and a pipeline, the coagulant adding stirrer is arranged on the coagulant adding barrel, the coagulant adding barrel is connected with the coagulation pool through the first coagulant adding metering pump and the pipeline, the demulsification wastewater conveying pump is arranged outside the middle pool, the demulsification wastewater conveying pump is connected with the lower part of the middle pool, the middle pool is connected with the centrifugal dehydrator through the demulsification wastewater conveying pump and the pipeline, the dehydrating device is provided with a centrifugal dehydrator, A first flocculating agent dosing barrel, a first flocculating agent dosing stirrer and a first flocculating agent dosing metering pump, wherein a centrifugal dehydrator is arranged above an adjusting tank body, the first flocculating agent dosing stirrer is arranged on the first flocculating agent dosing barrel, the first flocculating agent dosing barrel is connected with a pipeline between a demulsification wastewater conveying pump and the centrifugal dehydrator in a dehydrating device through the first flocculating agent dosing metering pump and the pipeline, the output end of the centrifugal dehydrator is respectively connected with an adjusting tank body and a sludge tank in the sludge concentration dehydrating device through the pipeline, a hydrolysis acidification tank body and a hydrolysis acidification submersible stirrer are arranged in the hydrolysis acidification tank body, the hydrolysis acidification submersible stirrer is arranged at the lower part of the inner side of the hydrolysis acidification tank body, the primary aerobic tank body is provided with a primary aerobic tank body, a primary aerobic perforated aeration pipe and a primary aerobic tank aeration pipe, the primary aerobic tank body is positioned at the right side of the hydrolysis acidification tank body, and the primary aerobic tank body is communicated with the bottom of the hydrolysis acidification tank body, the primary aerobic perforated aerator pipe is arranged at the bottom of the inner side of the primary aerobic tank body, the primary aerobic perforated aerator pipe is connected with an air supply device through the primary aerobic tank aerator pipe, the intermediate sedimentation tank is provided with an intermediate sedimentation tank body, a sludge reflux pump and a sludge discharge pump, the intermediate sedimentation tank body is positioned at the right side of the primary aerobic tank body, the sludge reflux pump and the sludge discharge pump are both arranged at the outer side of the top of the intermediate sedimentation tank body, the intermediate sedimentation tank body is connected with the primary aerobic tank body through a sludge reflux pump and a pipeline, the intermediate sedimentation tank body is connected with the hydrolysis acidification tank body through a sludge discharge pump and a pipeline, the secondary AO tank is provided with a secondary A tank, a secondary O tank, a secondary A tank submersible stirrer, a secondary O tank biological filler, a secondary O tank perforated aerator pipe and a secondary O tank aerator pipe, the secondary A tank is positioned at the right side of the intermediate sedimentation tank body, the secondary A tank is communicated with the upper part of the intermediate sedimentation tank stirrer, the secondary A tank is arranged at the lower part of the inner side of the secondary A tank, the second-stage O tank perforated aeration pipe is arranged at the bottom of the inner side of the second-stage O tank, the second-stage O tank perforated aeration pipe is connected with an air supply device through the second-stage O tank aeration pipe, the second-stage O tank biological filler is arranged at the middle part of the inner side of the second-stage O tank, the second-stage O tank biological filler is arranged above the second-stage O tank perforated aeration pipe, the coagulating sedimentation tank is provided with a coagulating tank body, a flocculating tank body, a sedimentation tank body, a coagulating machine mixer, a second coagulant dosing pump, a flocculating machine mixer, a second flocculant dosing barrel, a second flocculant dosing mixer, a second flocculant dosing pump and a first sludge conveying pump, the coagulating tank body is arranged at the right side of the second-stage O tank, the flocculating tank body is arranged at the right side of the coagulating tank body, the sedimentation tank body is arranged at the right side of the flocculating tank body, the coagulating tank body is communicated with the upper part of the second-stage O tank, the flocculating tank body is communicated with the bottom of the coagulating tank body, the sedimentation tank body is communicated with the upper part, the coagulation mechanical stirrer is arranged on the upper part of the coagulation tank body, the flocculation mechanical stirrer is arranged on the upper part of the flocculation tank body, the first sludge delivery pump is arranged outside the top of the sedimentation tank body, the sedimentation tank body is connected with a sludge tank in the sludge concentration dehydration device through the first sludge delivery pump and a pipeline, the coagulation tank body is connected with a coagulant adding barrel in the emulsion breaking reaction tank through a second coagulant adding dosing pump and a pipeline, the second flocculant adding dosing stirrer is arranged on a second flocculant adding barrel which is connected with the flocculation tank body through a second flocculant adding dosing pump and a pipeline, the water outlet tank is positioned on the right side of the sedimentation tank body and is communicated with the upper part of the sedimentation tank body, a drainage pipeline is arranged on the upper part of the right side of the water outlet tank, the sludge concentration dehydration device is provided with an oil sludge tank, a sludge delivery pump, a sludge tank, a sludge stirrer, a second sludge delivery pump, a filter press filter, a sludge delivery pump and a sludge pump, Slaked lime dissolving tank, slaked lime dissolving mixer, slaked lime delivery pump and third flocculating agent add the medicine measuring pump, the sludge impoundment is located breakdown of emulsion pond left side, sludge mixer installs on sludge impoundment upper portion, the sludge impoundment passes through the second sludge delivery pump, the pipeline is connected with the pressure filter input, the pressure filter output passes through the pipeline and is connected with the regulation cell body, third flocculating agent adds medicine measuring pump input and is connected with the first flocculating agent in dewatering device and adds the medicine bucket, third flocculating agent adds medicine measuring pump output and passes through pipeline and second sludge delivery pump, pipe connection between the pressure filter, slaked lime dissolving mixer installs on slaked lime dissolving tank upper portion, slaked lime dissolving tank passes through the slaked lime delivery pump and is connected with the sludge impoundment, fatlute delivery pump installs in the oil sludge impoundment top outside, the oil sludge impoundment passes through the fatlute delivery pump, the pipeline is connected with the sludge impoundment.

Preferably, the general control device is respectively connected with a slag scraper in an oil separation collecting tank, a collecting tank lifting pump, a regulating tank submersible mixer in a regulating tank, a regulating tank waste water delivery pump, a demulsification mixer in a demulsification reaction tank, a demulsifier dosing mixer, a demulsifier dosing metering pump, a coagulation mixer, a coagulant dosing mixer, a first coagulant dosing metering pump, a middle tank mixer, a demulsification waste water delivery pump, a centrifugal dehydrator, a first flocculant dosing mixer and a first flocculant dosing metering pump in a dehydration device, a hydrolysis acidification submersible mixer in a hydrolysis acidification tank, a sludge reflux pump and a sludge discharge pump in a middle sedimentation tank, a second-level A tank submersible mixer in a second-level AO tank, a coagulation mechanical mixer, a second coagulant dosing metering pump, a flocculation mechanical mixer, a second flocculant dosing pump, a sludge discharge pump in a coagulation sedimentation tank, The first sludge delivery pump, the sludge mixer, the slaked lime dissolving mixer, the slaked lime delivery pump, the third flocculant dosing metering pump and the gas supply device in the sludge concentration and dehydration device are connected.

Preferably, all install high level sensor and low level sensor in collecting pit in the oil removal collecting pit, the middle pond in the breakdown of emulsion reaction pond, equalizing basin body among the equalizing basin, the mud among the sludge concentration dewatering device, high level sensor is located low level sensor top, and high level sensor and low level sensor are connected with total controlling means through the pencil respectively.

Preferably, the bottoms of the demulsification pool, the coagulation pool and the middle pool in the demulsification reaction pool are in a cone hopper shape, the demulsification pool is communicated with the bottom of the coagulation pool, the coagulation pool is communicated with the upper part of the middle pool, and the upper part of the right side of the middle pool is connected with the collection pool in the oil separation collection pool through an overflow return pipe.

Preferably, the bottom of a sludge tank in the sludge concentration dehydration device is conical hopper-shaped.

Preferably, the flocculating agent in the first flocculating agent dosing barrel in the dewatering device is a cationic flocculating agent, and the flocculating agent in the second flocculating agent dosing barrel in the coagulating sedimentation tank is an anionic flocculating agent.

Compared with the prior art, the utility model has the advantages that:

the utility model discloses a to oil removal collecting pit, breakdown of emulsion reaction pond, dewatering device, equalizing basin, hydrolysis-acidification pond, one-level good oxygen pond, well heavy pond, second grade AO pond, coagulating sedimentation tank, play pond, air feeder, sludge thickening dewatering device and total controlling device carry out the optimal design combination, manufactured an acrylic acid emulsion waste water processing system. The problem of present ordinary acrylic acid emulsion waste water processing system when in actual use, have the following: 1, when a large amount of advanced oxidation is adopted as a treatment process in a common treatment system for acrylic emulsion wastewater, the investment and operation costs are high, the sludge production amount is large, and the later-stage sludge treatment cost is high; 2, when a common treatment system for acrylic emulsion wastewater adopts a catalytic oxidation method, an iron-carbon micro-electrolysis method and other treatment processes, the treated effluent has high salinity, and impacts a subsequent biochemical system; 3, the implementation of the discharge standard of synthetic resin industrial pollutants (GB 31572-2015) has stricter requirements on the discharge of characteristic pollutants styrene and emulsion wastewater, and the treatment system of the acrylic emulsion wastewater at the present stage has poor treatment effect on the characteristic pollutants in the acrylic emulsion wastewater and cannot meet the discharge requirements.

The utility model has low input cost, and realizes the great removal of organic pollutants and the great reduction of COD through the centrifugation after emulsion breaking; the biological treatment process carries out biochemical treatment, so that the operation cost can be greatly reduced; the filter pressing dehydration is carried out after the oil sludge is tempered, so that hazardous waste is reduced, the sludge treatment cost is reduced, the biochemical sludge amount can be reduced by the hydrolysis acidification tank, the removal of easily degradable COD is realized by the hydrolysis acidification and the first-stage aerobic tank, and the removal of difficultly degradable characteristic pollutants is realized by the contact oxidation method in the second-stage O tank.

Drawings

FIG. 1 is a schematic view of a connection frame between a central control device and a middle distribution sleeve device of an acrylic emulsion production wastewater treatment system of the utility model;

FIG. 2 is a schematic diagram of the connection of a second coagulant dosing metering pump in the oil separation collecting tank, the demulsification reaction tank, the dehydration device, the adjusting tank, the sludge concentration and dehydration device, the general control device and the coagulating sedimentation tank of the utility model;

fig. 3 is the utility model discloses well hydrolysis-acidification pool, one-level good oxygen pond, well heavy pond, second grade AO pond, play pond, coagulating basin body in the coagulating sedimentation tank, flocculation cell body, sedimentation cell body, coagulating machine mixer, flocculation machine mixer, second flocculating agent add the explosive barrel, second flocculating agent adds the explosive mixer, second flocculating agent adds the explosive metering pump and first sludge transfer pump and connects the schematic diagram.

Wherein: a in FIG. 2 is connected with A in FIG. 3, B in FIG. 2 is connected with B in FIG. 3, and C in FIG. 2 is connected with C in FIG. 3.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the scope of protection of the present invention.

The present invention will be described in further detail with reference to examples and embodiments.

Referring to the drawings: a system for treating wastewater generated in acrylic emulsion production is characterized by comprising an oil separation collecting tank 1, a demulsification reaction tank 2, a dehydration device 3, an adjusting tank 4, a hydrolysis acidification tank 5, a primary aerobic tank 6, a middle sedimentation tank 7, a secondary AO tank 8, a coagulating sedimentation tank 9, a water outlet tank 10, an air supply device 13, a sludge concentration dehydration device 11 and a general control device 12, wherein the oil separation collecting tank 1, an oil sludge tank 1101 and the adjusting tank 4 in the sludge concentration dehydration device 11 are connected into a whole, a sludge tank 1105 and a demulsification reaction tank 2 in the sludge concentration dehydration device 11 are connected into a whole, the hydrolysis acidification tank 5, the primary aerobic tank 6, the middle sedimentation tank 7, the secondary AO tank 8, the coagulating sedimentation tank 9 and the water outlet tank 10 are connected into a whole, the oil separation collecting tank 1 is provided with an oil separation tank 101, a collecting tank 102, a slag scraper 103 and a collecting tank lifting pump 104, the collecting tank 102 is positioned on the left side of the oil separation tank 101, the oil separation tank 101 is communicated with the bottom of the collecting tank 102, the slag scraper 103 is installed above the oil separation tank 101, the collection tank lift pump 104 is installed outside the top of the collection tank 102, the collection tank 102 is connected with the demulsification tank 201 in the demulsification reaction tank 2 through the collection tank lift pump 104 and a pipeline, the sludge tank 1101 is positioned on the right side of the oil separation tank 101 in the sludge concentration dehydration device 11, the top of the sludge tank 1101 is communicated with the top of the oil separation tank 101 and the sludge concentration dehydration device 11, the adjusting tank 4 is provided with an adjusting tank body 401, an adjusting tank submersible stirrer 402 and an adjusting tank waste water delivery pump 403, the adjusting tank body 401 is positioned on the right side of the sludge concentration dehydration device 11, the adjusting tank submersible stirrer 402 is installed on the lower part of the inner side of the adjusting tank body 401, the adjusting tank waste water delivery pump 403 is installed outside the top of the adjusting tank body 401, the adjusting tank body 401 is connected with the hydrolytic acidification tank 501 in the hydrolytic acidification demulsification tank 5 through the adjusting tank waste water delivery pump 403 and a pipeline, the reaction tank 2 is provided with the 201 tank, A coagulation tank 203, an intermediate tank 205, a demulsification mixer 202, a demulsifier dosing tank 212, a demulsifier dosing mixer 213, a demulsifier dosing metering pump 214, a coagulation mixer 204, a coagulant dosing tank 209, a coagulant dosing mixer 210, a first coagulant dosing metering pump 211, an intermediate tank mixer 206 and a demulsification wastewater delivery pump 208, wherein the demulsification tank 201, the coagulation tank 203 and the intermediate tank 205 are sequentially connected from left to right, the demulsification mixer 202 is arranged on the upper part of the demulsification tank 201, the coagulation mixer 204 is arranged on the upper part of the coagulation tank 203, the intermediate tank mixer 206 is arranged on the upper part of the intermediate tank 205, the demulsifier dosing tank 213 is arranged on the demulsifier dosing tank 212, the demulsifier dosing tank 212 is connected with the demulsification tank 201 through the demulsifier dosing metering pump 214 and a pipeline, the coagulant dosing mixer 210 is arranged on the coagulant dosing tank 209, the coagulant dosing tank 209 is arranged through the first coagulant dosing pump 211, the dosing pump 211 is arranged on the demulsification wastewater delivery pump 208, The pipeline is connected with the coagulation tank 202, the demulsification wastewater delivery pump 208 is arranged outside the middle tank 205, the demulsification wastewater delivery pump 208 is connected with the lower part of the middle tank 205, the middle tank 205 is connected with the input end of the centrifugal dehydrator 301 in the dehydration device 3 through the demulsification wastewater delivery pump 208 and the pipeline, the dehydration device 3 is provided with the centrifugal dehydrator 301, a first flocculant dosing barrel 302, a first flocculant dosing stirrer 303 and a first flocculant dosing metering pump 304, the centrifugal dehydrator 301 is arranged above the adjusting tank body 401, the first flocculant dosing stirrer 303 is arranged on the first flocculant dosing barrel 302, the first flocculant dosing barrel 302 is connected with the demulsification wastewater delivery pump 208 and the pipeline between the centrifugal dehydrators 301 in the dehydration device 3 through the first flocculant dosing metering pump 304 and the pipeline, the output end of the centrifugal dehydrator 301 is respectively connected with the adjusting tank body 401 and the sludge tank 1101 in the sludge concentration dehydration device 11 through the pipeline, the hydrolysis acidification tank 5 is provided with a hydrolysis acidification tank body 501 and a hydrolysis acidification submersible mixer 502, the hydrolysis acidification submersible mixer 502 is arranged at the lower part of the inner side of the hydrolysis acidification tank body 501, the first-stage aerobic tank 6 is provided with a first-stage aerobic tank body 601, a first-stage aerobic perforated aeration pipe 602 and a first-stage aerobic tank aeration pipe 603, the first-stage aerobic tank body 601 is positioned at the right side of the hydrolysis acidification tank body 501, the first-stage aerobic tank body 601 is communicated with the bottom of the hydrolysis acidification tank body 501, the first-stage aerobic perforated aeration pipe 602 is arranged at the bottom of the inner side of the first-stage aerobic tank body 601, the first-stage aerobic perforated aeration pipe 602 is connected with the air supply device 13 through the first-stage aerobic tank aeration pipe 603, the intermediate sedimentation tank 7 is provided with an intermediate sedimentation tank body 701, a sludge reflux pump 702 and a sludge discharge pump 703, the intermediate sedimentation tank body 701 is positioned at the right side of the first-stage aerobic tank body 601, the sludge reflux pump 702 and the sludge discharge pump 703 are both arranged at the outer side of the top of the intermediate sedimentation tank body 701, and the intermediate sedimentation tank body are arranged through the sludge reflux pump 702, the sludge reflux pump 702, The pipeline is connected with a primary aerobic tank body 601, a middle sedimentation tank body 701 is connected with a hydrolysis acidification tank body 501 through a sludge discharge pump 702 and the pipeline, a secondary AO tank 8 is provided with a secondary A tank 801, a secondary O tank 802, a secondary A tank submersible stirrer 803, a secondary O tank biological filler 804, a secondary O tank perforated aerator pipe 805 and a secondary O tank aerator pipe 806, the secondary A tank 801 is positioned at the right side of the middle sedimentation tank body 701, the secondary O tank 802 is positioned at the right side of the secondary A tank 801, the secondary A tank 801 is communicated with the upper part of the middle sedimentation tank body 701, the secondary A tank submersible stirrer 803 is arranged at the lower part of the inner side of the secondary A tank 801, the secondary O tank perforated aerator pipe 805 is arranged at the bottom of the inner side of the secondary O tank 802, the secondary O tank perforated aerator pipe 805 is connected with a gas supply device 13 through a secondary O tank aerator pipe 806, the secondary O tank biological filler 804 is arranged at the middle part of the inner side of the secondary O tank 802, the secondary O tank biological filler 804 is positioned above the secondary O tank perforated aerator pipe 805, the coagulation sedimentation tank 9 comprises a coagulation tank body 901, a flocculation tank body 902, a sedimentation tank body 903, a coagulation mechanical stirrer 904, a second coagulant dosing metering pump 910, a flocculation mechanical stirrer 905, a second flocculant dosing barrel 907, a second flocculant dosing stirrer 908, a second flocculant dosing metering pump 909 and a first sludge delivery pump 906, wherein the coagulation tank body is positioned on the right side of a second-stage O tank, the flocculation tank body 902 is positioned on the right side of the coagulation tank body 901, the sedimentation tank body 903 is positioned on the right side of the flocculation tank body 902, the coagulation tank body 901 is communicated with the upper part of the second-stage O tank 802, the flocculation tank body 902 is communicated with the bottom of the coagulation tank body 901, the sedimentation tank body 903 is communicated with the upper part of the flocculation tank body 902, the coagulation mechanical stirrer 905 is arranged on the upper part of the flocculation tank body 902, the first sludge delivery pump 906 is arranged on the outer side of the top of the sedimentation tank body 903, and the sedimentation tank body 903 is communicated with the upper part of the flocculation tank body 906 through the first sludge delivery pump 906, The pipeline is connected with a sludge pool 1105 in the sludge concentration dehydration device 11, the coagulation pool body 901 is connected with a coagulant adding barrel 209 in the emulsion breaking reaction pool 2 through a second coagulant adding dosing pump 910 and the pipeline, a second flocculant adding stirrer 908 is installed on the second flocculant adding barrel 907, the second flocculant adding barrel 907 is connected with the flocculation pool body 902 through the second flocculant adding dosing pump 908 and the pipeline, the water outlet pool 10 is positioned at the right side of the sedimentation pool body 903, the water outlet pool 10 is communicated with the upper part of the sedimentation pool body 903, the upper part of the right side of the water outlet pool 40 is provided with a drainage pipeline 1001, the sludge concentration dehydration device 11 is provided with an oil sludge pool 1101, an oil sludge delivery pump 1102, a sludge pool 1105, a sludge stirrer 1106, a second sludge delivery pump 1104, a filter press 1103, a slaked lime dissolving tank 1108, a slaked lime dissolving stirrer 1109, a slaked lime delivery pump 1107 and a third flocculant adding pump 1110, the sludge pool metering pump 1105 is positioned at the left side of the emulsion breaking pool 201, sludge agitator 1106 installs on sludge impoundment 1105 upper portion, sludge impoundment 1105 passes through second sludge delivery pump 1104, the pipeline is connected with pressure filter 1103 input, the pressure filter 1103 output passes through the pipeline and is connected with regulation cell body 401, first flocculating agent adds the explosive barrel 302 and is connected in third flocculating agent adds the explosive pump 1107 input and the dewatering device 3, third flocculating agent adds the explosive pump 1107 output and passes through pipeline and second sludge delivery pump 1104, pipe connection between the pressure filter 1103, lime hydrate dissolves mixer 1109 and installs on lime hydrate dissolving tank 1108 upper portion, lime hydrate dissolving tank 1108 passes through lime hydrate delivery pump 1110 and is connected with sludge impoundment 1105, sludge delivery pump 1102 is installed in the oil sludge impoundment 1101 top outside, oil sludge impoundment 1101 passes through sludge delivery pump 1102, the pipeline is connected with sludge impoundment 1105.

Preferably, the general control device 12 is connected with the slag scraper 103, the collecting tank lift pump 104, the adjusting tank submersible mixer 402, the adjusting tank waste water delivery pump 403 in the adjusting tank 4, the emulsion breaking mixer 202, the emulsion breaker dosing mixer 213, the emulsion breaker dosing metering pump 214, the coagulating mixer 204, the coagulant dosing mixer 210, the first coagulant dosing metering pump 211, the intermediate tank mixer 206, the emulsion breaking waste water delivery pump 208 in the emulsion breaking reaction tank 2, the centrifugal dewatering 301, the first flocculant dosing mixer 303, the first flocculant dosing metering pump 304 in the dewatering device 3, the hydrolytic acidification submersible mixer 502 in the hydrolytic acidification tank 5, the sludge reflux pump 702 and the sludge discharge pump 703 in the intermediate sedimentation tank 7, the secondary a tank submersible mixer 803 in the secondary AO tank 8, the coagulating mechanical mixer 904 and the second coagulant dosing metering pump 910 in the coagulating sedimentation tank 9 through wire harnesses respectively, The flocculation mechanical stirrer 905, the second flocculant dosing stirrer 908, the second flocculant dosing metering pump 909, the first sludge delivery pump 906, the sludge delivery pump 1102, the sludge stirrer 1106, the slaked lime dissolving stirrer 1109, the slaked lime delivery pump 1110, the third flocculant dosing metering pump 1107 and the gas supply device 13 are connected in the sludge concentration and dehydration device 11.

Preferably, a high liquid level sensor and a low liquid level sensor are mounted in the collection tank 102 in the oil separation collection tank 1, the middle tank 205 in the demulsification reaction tank 2, the regulating tank body 401 in the regulating tank 4 and the oil-sludge tank 1101 in the sludge concentration and dehydration device 11, the high liquid level sensor is positioned above the low liquid level sensor, and the high liquid level sensor and the low liquid level sensor are respectively connected with the master control device 12 through wiring harnesses.

Preferably, the bottoms of the demulsification pool 201, the coagulation pool 203 and the middle pool 205 in the demulsification reaction pool 2 are in a cone hopper shape, the demulsification pool 201 is communicated with the bottom 203 of the coagulation pool, the coagulation pool 203 is communicated with the upper part of the middle pool 205, and the upper part of the right side of the middle pool 205 is connected with the collection pool 102 in the oil separation collection pool 1 through an overflow return pipe 207.

Preferably, the bottom of the intermediate sedimentation tank 701 in the intermediate sedimentation tank 7, the bottom of the coagulation tank 901, the bottom of the flocculation tank 902 and the bottom of the sedimentation tank 903 in the coagulation sedimentation tank 9 and the bottom of the sludge tank 1101 in the sludge concentration and dehydration device 11 are all cone hopper-shaped.

Preferably, the flocculating agent in the first flocculating agent adding barrel 302 in the dewatering device 3 is a cationic flocculating agent, and the flocculating agent in the second flocculating agent adding barrel 907 in the coagulating sedimentation tank 9 is an anionic flocculating agent.

When in use: firstly, confirming that the demulsifier in the demulsifier dosing barrel 212 and the coagulant in the coagulant dosing barrel 209 in the demulsification reaction tank 2, the cationic flocculant in the first flocculant dosing barrel 302 in the dehydration device 3, the anionic flocculant in the second flocculant dosing barrel 907 in the coagulating sedimentation tank 9 and the lime slaking content in the lime slaking tank 1108 in the sludge concentration dehydration device 11 are sufficient;

the main control device 12 instructs the demulsifier adding mixer 213, the coagulant adding mixer 210, the first flocculant adding mixer 303, the second flocculant adding mixer 908 and the slaked lime dissolving mixer 1109 to work, so as to ensure that the demulsifier adding mixer 213 stirs the demulsifier in the demulsifier adding barrel 212, the coagulant adding mixer 210 stirs the coagulant in the coagulant adding barrel 209, the first flocculant adding mixer 303 stirs the cationic flocculant in the first flocculant adding barrel 302, the second flocculant adding mixer 908 stirs the anionic flocculant in the second flocculant adding barrel 907, and the slaked lime dissolving mixer 1109 stirs the slaked lime in the slaked lime dissolving tank 1108;

acrylic emulsion wastewater enters the oil separation tank 101 through the water inlet pipeline 14, under the action of gravity, floating oil and wastewater are separated, the master control device 12 instructs the residue scraper 103 to work, the residue scraper 103 reciprocates on the surface of the acrylic emulsion wastewater in the oil separation tank 101, the floating oil enters the sludge tank 1101 through the residue scraper 103, when the liquid level in the sludge tank 1101 reaches a high liquid level, the master control device 12 instructs the sludge transfer pump 1102 to work, sludge in the sludge tank 1101 is transferred into the sludge tank 1105 through a pipeline under the action of the sludge transfer pump 1102, and when the liquid level in the sludge tank 1101 reaches a low liquid level, the master control device 12 instructs the sludge transfer pump 1102 to pause; acrylic emulsion wastewater flows into the collection tank 102 from the bottom of the oil separation tank 101, when the liquid level of the acrylic emulsion wastewater in the collection tank 102 reaches a high liquid level, the master control device 12 instructs the collection tank lifting pump 104 to work, the acrylic emulsion wastewater in the collection tank 102 enters the emulsion breaking tank 201 in the emulsion breaking reaction tank 2 through the collection tank lifting pump 104 and a pipeline, and when the liquid level of the acrylic emulsion wastewater in the collection tank 102 reaches a low liquid level, the master control device 12 instructs the collection tank lifting pump 104 to pause;

after the acrylic emulsion wastewater enters the emulsion breaking tank 201, the master control device 12 instructs the emulsion breaking stirrer 202 and the demulsifier dosing metering pump 214 to work, the demulsifier dosing metering pump 214 conveys the demulsifier in the stirred demulsifier dosing barrel 212 into the emulsion breaking tank 201 through a pipeline, the emulsion breaking tank stirrer 202 stirs the demulsifier and the acrylic emulsion wastewater in the emulsion breaking tank 201, and the acrylic emulsion wastewater and the demulsifier perform emulsion breaking reaction; acrylic emulsion wastewater after demulsification reaction automatically flows into a coagulation tank 203 from the bottom of a demulsification tank 201, a master control device 12 instructs a coagulation mixer 204 and a first coagulant adding and metering pump 211 to work, the first coagulant adding and metering pump 211 conveys the stirred coagulant in a coagulant adding and metering tank 209 into the coagulation tank 203 through a pipeline, the coagulation mixer 204 stirs the coagulant in the coagulation tank 203 and the acrylic emulsion wastewater, then the wastewater in the coagulation tank 203 automatically flows into an intermediate tank 205 from the top, the master control device 12 instructs an intermediate tank mixer 206 to work at regular time, when the wastewater in the intermediate tank 205 reaches a high liquid level, the master control device 12 instructs a demulsification wastewater conveying pump 208 to work, the wastewater in the intermediate tank 205 enters a centrifugal dehydrator 301 through a pipeline under the action of the demulsification wastewater conveying pump 208, the master control device 12 simultaneously instructs a first flocculant adding and metering pump 304 to work, and a cation flocculant in a first flocculant adding and metering pump 302 stirred under the action of the first flocculant adding and metering pump 304 is communicated with the demulsification wastewater conveying pump 208 The mixture enters a pipeline between the demulsification wastewater delivery pump 208 and the centrifugal dehydrator 301 through a pipeline, and the cationic flocculant is mixed with wastewater in the pipeline between the demulsification wastewater delivery pump 208 and the centrifugal dehydrator 301 and then enters the centrifugal dehydrator 301; when the wastewater liquid level in the intermediate tank 205 reaches a low liquid level, the master control device 12 simultaneously instructs the demulsification wastewater delivery pump 208 and the first flocculant dosing metering pump 304 to pause;

when the liquid level of the wastewater in the intermediate tank 205 exceeds a high liquid level, supernatant in the intermediate tank 205 enters the collection tank 102 in the oil separation collection tank 1 from the upper part of the right side of the intermediate tank 205 through an overflow return pipe 207;

the master control device 12 instructs the centrifugal dehydrator 301 to work, and after wastewater added with the flocculant enters the centrifugal dehydrator 301, the problems of unclear layering and slow layering of oil and water can be avoided under the continuous working action of the centrifugal dehydrator 301; after demulsification and centrifugation, the removal rate of COD of the wastewater can reach more than 90%; wastewater generated by the centrifugal dehydrator 301 enters the regulating tank body 401 through a pipeline, and oil sludge generated by the centrifugal dehydrator 301 enters the oil sludge tank 1101 through a pipeline;

after the wastewater enters the regulating reservoir body 401, the master control device 12 instructs the regulating reservoir submersible mixer 402 to work, and the regulating reservoir submersible mixer 402 mixes the wastewater in the regulating reservoir body 401, so that the water quantity and the water quality of the wastewater can be regulated; when the wastewater in the regulating reservoir body 401 reaches a high liquid level, the master control device 2 instructs the regulating reservoir wastewater delivery pump 403 to work, the wastewater in the regulating reservoir body 401 enters the hydrolysis acidification reservoir body 501 through a pipeline under the action of the regulating reservoir wastewater delivery pump 403, when the wastewater in the regulating reservoir body 401 reaches a low liquid level, the master control device 12 instructs the regulating reservoir wastewater delivery pump 403 to pause,

after the wastewater enters the hydrolysis acidification tank body 501, the master control device 12 instructs the hydrolysis acidification submersible mixer 502 to work, the hydrolysis acidification submersible mixer 502 can mix the wastewater in the hydrolysis acidification tank body 501 with the sludge conveyed to the hydrolysis acidification tank body 501 in the neutralization tank body 701, contact and reaction of the sludge and the wastewater can be accelerated, biodegradability of the wastewater is improved, and discharge of biochemical sludge is reduced by digestion of aerobic sludge; the wastewater in the hydrolysis acidification tank body 501 automatically flows into the primary aerobic tank body 601 from the bottom of the hydrolysis acidification tank body 501;

after the wastewater enters the primary aerobic tank body 601, the master control device 12 instructs the gas supply device 13 to supply gas to the primary aerobic perforated aeration pipe 602 through the primary aerobic tank aeration pipe 603, and the gas is discharged into the primary aerobic tank body 601 through the primary aerobic perforated aeration pipe 602, so that the oxygen content in the primary aerobic tank body 601 is increased; the mixture of the wastewater and the sludge in the primary aerobic tank body 601 automatically flows into a middle sedimentation tank body 701 in a middle sedimentation tank 7 from the upper part of the primary aerobic tank body 601;

sludge in the wastewater and sludge mixture is precipitated at the bottom of the intermediate sedimentation tank body 701 in the intermediate sedimentation tank body 701, the master control device 12 instructs the sludge reflux pump 702 and the sludge discharge pump 703 to work, under the action of the sludge reflux pump 702, part of sludge in the intermediate sedimentation tank body 701 enters the primary aerobic tank body 601 through a pipeline, and under the action of the sludge discharge pump 703, part of sludge in the intermediate sedimentation tank body 701 enters the hydrolysis acidification tank body 501 through a pipeline; wastewater in the intermediate sedimentation tank body 701 automatically flows into a secondary A tank 801 in a secondary AO tank 8 from the upper part of the intermediate sedimentation tank body 701; the mutual interference of the sludge in the primary aerobic tank body 601 and the sludge in the secondary AO tank 8 can be avoided, meanwhile, the sludge in the hydrolysis acidification tank body 501 can be supplemented, and the sludge digestion is carried out by utilizing the hydrolysis acidification effect to reduce the sludge discharge;

after the wastewater enters the secondary A pool 801, the master control device 12 instructs the secondary A pool submersible mixer 803 to work, the secondary A pool submersible mixer 803 mixes the wastewater in the secondary A pool 801, the wastewater generates denitrification in the secondary A pool 801, and the denitrification wastewater automatically flows into the secondary O pool 802 from the top of the secondary A pool 801; the secondary A tank 801 is used for denitrification, and a submersible stirrer 803 of the secondary A tank is arranged in the secondary A tank 801 to improve the denitrification efficiency; suspended sludge in the denitrification wastewater is subjected to ammoniation and pollutant degradation reactions in the secondary O tank 802 and under the action of bacteria growing on a biological membrane of the biological filler 804 of the secondary O tank; the master control device 12 simultaneously instructs the gas supply device 13 to supply gas to the secondary O-tank perforated aerator pipe 805 through the secondary O-tank aerator pipe 806, and the gas is discharged into the secondary O-tank 802 through the secondary O-tank perforated aerator pipe 805 to provide oxygen for a biological system in the secondary O-tank 802; the biomass in the secondary O tank 802 is large, the organisms are rich, the sludge retention time is long, and the removal of difficultly-degradable characteristic pollutants such as styrene and acrylic acid and the nitrification of ammonia nitrogen can be realized; the water in the second-stage O pool 802 automatically flows into the coagulation pool body 901 in the coagulation sedimentation pool 9 from the upper part of the second-stage O pool 802;

the water body enters the coagulation tank body 901, the master control device 12 instructs the coagulation mechanical stirrer 904 and the second coagulant dosing metering pump 910 to work, the second coagulant dosing metering pump 910 conveys the coagulant in the coagulant dosing barrel 209 in the emulsion breaking reaction tank 2 into the coagulation tank body 901 through a pipeline, the coagulation mechanical stirrer 904 stirs the coagulant and the water body in the coagulation tank body 901, and the coagulated water body automatically flows into the coagulation tank body 902 from the bottom of the coagulation tank body 901; the master control device 12 instructs the flocculation mechanical stirrer 905 and the second flocculant dosing metering pump 909 to work, under the action of the second flocculant dosing metering pump 909, an anionic flocculant in the second flocculant dosing barrel 907 enters the flocculation tank 902 through a pipeline, the flocculation mechanical stirrer 905 stirs the anionic flocculant and a water body in the flocculation tank 902, the flocculated water body automatically flows into the sedimentation tank 903 from the upper part of the flocculation tank 902, after the water body is sedimentated in the sedimentation tank 903 for a period of time, the sedimentated water body automatically flows into the water outlet tank 10 from the upper part of the sedimentation tank 903, and the water body reaching the standard is discharged from a water discharge pipeline 1001 at the upper part of the right side of the water outlet tank 10;

the master control device 12 instructs the first sludge delivery pump 906 to work regularly, and sludge in the sedimentation tank 903 is delivered to a sludge tank 1105 in the sludge concentration dehydration device 11 through a pipeline under the action of the first sludge delivery pump 906;

when the sludge in the sludge pool 1105 reaches the middle-high position, the master control device 12 instructs the sludge stirrer 1106 and the slaked lime delivery pump 1110 to work, slaked lime in the slaked lime dissolving tank is delivered into the sludge pool 1105 through a pipeline under the action of the slaked lime delivery pump 1110, and the sludge stirrer 1106 stirs and refines the sludge and the slaked lime in the sludge pool 1105; the second sludge conveying pump 1104 and the filter press 1103 are manually started, sludge after conditioning in the sludge pool 1105 enters the filter press 1103 through a pipeline under the action of the second sludge conveying pump 1104, when the sludge is conveyed to the filter press 1103, the control device 12 instructs the third flocculant dosing metering pump 1107 to work, a cationic flocculant in the first flocculant dosing barrel 302 of the dewatering device 3 enters the second sludge conveying pump 1104 through the pipeline under the action of the third flocculant dosing metering pump 1107, the inside of the pipeline between the filter presses 1103 is mixed with the sludge in the second sludge conveying pump 1104 and the pipeline between the filter presses 1103, then the mixture enters the filter press 1103 for filter press dewatering, water discharged by the filter press 1103 enters the adjusting tank body 401 through the pipeline, the dewatered sludge is discharged by the filter press 1103, and the collected sludge is properly treated.

The utility model provides a processing system of present ordinary acrylic acid emulsion waste water when in-service use, have following problem: 1, when a large amount of advanced oxidation is adopted as a treatment process in a common treatment system for acrylic emulsion wastewater, the investment and operation costs are high, the sludge production amount is large, and the later-stage sludge treatment cost is high; 2, when a common treatment system for acrylic emulsion wastewater adopts a catalytic oxidation method, an iron-carbon micro-electrolysis method and other treatment processes, the treated effluent has high salinity, and impacts a subsequent biochemical system; 3, the implementation of the discharge standard of synthetic resin industrial pollutants (GB 31572-2015) has stricter requirements on the discharge of characteristic pollutants styrene and emulsion wastewater, and the treatment system of the acrylic emulsion wastewater at the present stage has poor treatment effect on the characteristic pollutants in the acrylic emulsion wastewater and cannot meet the discharge requirements. Meanwhile, the utility model has low input cost, and realizes the great removal of organic pollutants and the great reduction of COD through the centrifugation after demulsification; the biological treatment process carries out biochemical treatment, so that the operation cost can be greatly reduced; the filter pressing dehydration is carried out after the oil sludge is tempered, the hazardous waste is reduced, the sludge treatment cost is reduced, the biochemical sludge amount can be reduced by the hydrolysis acidification tank 5, the removal of easily degradable COD is realized by the hydrolysis acidification and the first-level aerobic tank 6, and the removal of the difficultly degradable characteristic pollutants is realized by the contact oxidation method by the second-level O tank 802.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and improvements can be made without departing from the inventive concept, and all of them belong to the protection scope of the present invention.

Claims

1. A system for treating wastewater generated in acrylic emulsion production is characterized by comprising an oil separation collecting tank, a demulsification reaction tank, a dehydration device, an adjusting tank, a hydrolysis acidification tank, a primary aerobic tank, a middle sedimentation tank, a secondary AO tank, a coagulating sedimentation tank, a water outlet tank, an air supply device, a sludge concentration dehydration device and a master control device, wherein the oil separation collecting tank, the sludge tank and the adjusting tank in the sludge concentration dehydration device are connected into a whole, the sludge tank and the demulsification reaction tank in the sludge concentration dehydration device are connected into a whole, the hydrolysis acidification tank, the primary aerobic tank, the middle sedimentation tank, the secondary AO tank, the coagulating sedimentation tank and the water outlet tank are connected into a whole, the oil separation collecting tank is provided with the oil separation tank, the collecting tank, a slag scraper and a collecting tank lifting pump, the collecting tank lifting pump is arranged on the outer side of the top of the collecting tank, the collecting tank is connected with a demulsification tank in a demulsification reaction tank through a collecting tank lifting pump and a pipeline, the sludge tank in the sludge concentration dehydration device is positioned on the right side of the oil separation tank, the oil separation tank is communicated with the top of the sludge tank in the sludge concentration dehydration device, the regulating tank is provided with a regulating tank body, a regulating tank submersible mixer and a regulating tank waste water delivery pump, the regulating tank body is positioned on the right side of the sludge tank in the sludge concentration dehydration device, the regulating tank submersible mixer is arranged on the lower part of the inner side of the regulating tank body, the regulating tank waste water delivery pump is arranged on the outer side of the top of the regulating tank body, the regulating tank body is connected with a hydrolysis acidification tank in a hydrolysis acidification tank through the regulating tank waste water delivery pump and the pipeline, the demulsification reaction tank is provided with a demulsification tank, a coagulation tank, an intermediate tank, a demulsification mixer, a demulsification tank, a demulsification barrel, a demulsifier dosing mixer, a demulsification metering pump, a coagulating mixer, a coagulant dosing barrel and a demulsification tank, A coagulant adding stirrer, a first coagulant adding metering pump, a middle pool stirrer and a demulsification wastewater conveying pump, wherein the demulsification pool, the coagulation pool and the middle pool are sequentially connected from left to right, the demulsification stirrer is arranged on the upper part of the demulsification pool, the coagulation stirrer is arranged on the upper part of the coagulation pool, the middle pool stirrer is arranged on the upper part of the middle pool, the demulsifier adding stirrer is arranged on a demulsifier adding barrel, the demulsifier adding barrel is connected with the demulsification pool through a demulsifier adding metering pump and a pipeline, the coagulant adding stirrer is arranged on the coagulant adding barrel, the coagulant adding barrel is connected with the coagulation pool through the first coagulant adding metering pump and the pipeline, the demulsification wastewater conveying pump is arranged outside the middle pool, the demulsification wastewater conveying pump is connected with the lower part of the middle pool, the middle pool is connected with the centrifugal dehydrator through the demulsification wastewater conveying pump and the pipeline, the dehydrating device is provided with a centrifugal dehydrator, A first flocculating agent dosing barrel, a first flocculating agent dosing stirrer and a first flocculating agent dosing metering pump, wherein a centrifugal dehydrator is arranged above an adjusting tank body, the first flocculating agent dosing stirrer is arranged on the first flocculating agent dosing barrel, the first flocculating agent dosing barrel is connected with a pipeline between a demulsification wastewater conveying pump and the centrifugal dehydrator in a dehydrating device through the first flocculating agent dosing metering pump and the pipeline, the output end of the centrifugal dehydrator is respectively connected with an adjusting tank body and a sludge tank in the sludge concentration dehydrating device through the pipeline, a hydrolysis acidification tank body and a hydrolysis acidification submersible stirrer are arranged in the hydrolysis acidification tank body, the hydrolysis acidification submersible stirrer is arranged at the lower part of the inner side of the hydrolysis acidification tank body, the primary aerobic tank body is provided with a primary aerobic tank body, a primary aerobic perforated aeration pipe and a primary aerobic tank aeration pipe, the primary aerobic tank body is positioned at the right side of the hydrolysis acidification tank body, and the primary aerobic tank body is communicated with the bottom of the hydrolysis acidification tank body, the primary aerobic perforated aerator pipe is arranged at the bottom of the inner side of the primary aerobic tank body, the primary aerobic perforated aerator pipe is connected with an air supply device through the primary aerobic tank aerator pipe, the intermediate sedimentation tank is provided with an intermediate sedimentation tank body, a sludge reflux pump and a sludge discharge pump, the intermediate sedimentation tank body is positioned at the right side of the primary aerobic tank body, the sludge reflux pump and the sludge discharge pump are both arranged at the outer side of the top of the intermediate sedimentation tank body, the intermediate sedimentation tank body is connected with the primary aerobic tank body through a sludge reflux pump and a pipeline, the intermediate sedimentation tank body is connected with the hydrolysis acidification tank body through a sludge discharge pump and a pipeline, the secondary AO tank is provided with a secondary A tank, a secondary O tank, a secondary A tank submersible stirrer, a secondary O tank biological filler, a secondary O tank perforated aerator pipe and a secondary O tank aerator pipe, the secondary A tank is positioned at the right side of the intermediate sedimentation tank body, the secondary A tank is communicated with the upper part of the intermediate sedimentation tank stirrer, the secondary A tank is arranged at the lower part of the inner side of the secondary A tank, the second-stage O tank perforated aeration pipe is arranged at the bottom of the inner side of the second-stage O tank, the second-stage O tank perforated aeration pipe is connected with an air supply device through the second-stage O tank aeration pipe, the second-stage O tank biological filler is arranged at the middle part of the inner side of the second-stage O tank, the second-stage O tank biological filler is arranged above the second-stage O tank perforated aeration pipe, the coagulating sedimentation tank is provided with a coagulating tank body, a flocculating tank body, a sedimentation tank body, a coagulating machine mixer, a second coagulant dosing pump, a flocculating machine mixer, a second flocculant dosing barrel, a second flocculant dosing mixer, a second flocculant dosing pump and a first sludge conveying pump, the coagulating tank body is arranged at the right side of the second-stage O tank, the flocculating tank body is arranged at the right side of the coagulating tank body, the sedimentation tank body is arranged at the right side of the flocculating tank body, the coagulating tank body is communicated with the upper part of the second-stage O tank, the flocculating tank body is communicated with the bottom of the coagulating tank body, the sedimentation tank body is communicated with the upper part, the coagulation mechanical stirrer is arranged on the upper part of the coagulation tank body, the flocculation mechanical stirrer is arranged on the upper part of the flocculation tank body, the first sludge delivery pump is arranged outside the top of the sedimentation tank body, the sedimentation tank body is connected with a sludge tank in the sludge concentration dehydration device through the first sludge delivery pump and a pipeline, the coagulation tank body is connected with a coagulant adding barrel in the emulsion breaking reaction tank through a second coagulant adding dosing pump and a pipeline, the second flocculant adding dosing stirrer is arranged on a second flocculant adding barrel which is connected with the flocculation tank body through a second flocculant adding dosing pump and a pipeline, the water outlet tank is positioned on the right side of the sedimentation tank body and is communicated with the upper part of the sedimentation tank body, a drainage pipeline is arranged on the upper part of the right side of the water outlet tank, the sludge concentration dehydration device is provided with an oil sludge tank, a sludge delivery pump, a sludge tank, a sludge stirrer, a second sludge delivery pump, a filter press filter, a sludge delivery pump and a sludge pump, Slaked lime dissolving tank, slaked lime dissolving mixer, slaked lime delivery pump and third flocculating agent add the medicine measuring pump, the sludge impoundment is located breakdown of emulsion pond left side, sludge mixer installs on sludge impoundment upper portion, the sludge impoundment passes through the second sludge delivery pump, the pipeline is connected with the pressure filter input, the pressure filter output passes through the pipeline and is connected with the regulation cell body, third flocculating agent adds medicine measuring pump input and is connected with the first flocculating agent in dewatering device and adds the medicine bucket, third flocculating agent adds medicine measuring pump output and passes through pipeline and second sludge delivery pump, pipe connection between the pressure filter, slaked lime dissolving mixer installs on slaked lime dissolving tank upper portion, slaked lime dissolving tank passes through the slaked lime delivery pump and is connected with the sludge impoundment, fatlute delivery pump installs in the oil sludge impoundment top outside, the oil sludge impoundment passes through the fatlute delivery pump, the pipeline is connected with the sludge impoundment.

2. The system according to claim 1, wherein the general control device is connected to the residue scraper, the collecting tank lift pump, the adjusting tank submersible mixer, the adjusting tank waste water delivery pump, the emulsion breaker mixer, the emulsion breaker dosing pump, the coagulation mixer, the coagulant dosing mixer, the first coagulant dosing pump, the intermediate tank mixer, the emulsion breaking waste water delivery pump, the centrifugal dehydrator, the first flocculant mixer, the first flocculant dosing pump, the hydrolysis acidification tank submersible mixer, the sludge reflux pump and the sludge discharge pump in the intermediate sedimentation tank, the second A tank submersible mixer in the second AO tank, the coagulation mechanical mixer, the second coagulant dosing pump, the emulsion breaker dosing pump, the coagulation mixer, the first flocculant dosing pump, the emulsion breaking reaction tank, the emulsion breaker dosing mixer, the emulsion breaker dosing pump, the coagulation mixer, the intermediate sedimentation tank, the second AO tank, the centrifugal dehydrator, the coagulation mechanical mixer, the second coagulant dosing pump, the emulsion breaking waste water delivery pump, the emulsion, The device comprises a flocculation mechanical stirrer, a second flocculating agent dosing metering pump, a first sludge delivery pump, an oil sludge delivery pump, a sludge stirrer, a slaked lime dissolving stirrer, a slaked lime delivery pump, a third flocculating agent dosing metering pump and a gas supply device which are connected in a sludge concentration dehydration device.

3. The system of claim 1, wherein a high level sensor and a low level sensor are mounted in the collection tank in the oil separation collection tank, the intermediate tank in the demulsification reaction tank, the adjusting tank body in the adjusting tank and the oil sludge tank in the sludge concentration and dehydration device, the high level sensor is positioned above the low level sensor, and the high level sensor and the low level sensor are respectively connected with the master control device through wiring harnesses.

4. The system of claim 1, wherein the bottom of the emulsion breaking tank, the coagulation tank and the middle tank in the emulsion breaking reaction tank are in a cone hopper shape, the emulsion breaking tank is communicated with the bottom of the coagulation tank, the coagulation tank is communicated with the upper part of the middle tank, and the upper part of the right side of the middle tank is connected with the collection tank in the oil separation collection tank through an overflow return pipe.

5. The system of claim 1, wherein the bottom of the intermediate sedimentation tank, the coagulation tank, the flocculation tank, the sedimentation tank, and the sludge thickening and dewatering device is conical.

6. The system of claim 1, wherein the flocculant in the first flocculant dosing tank of the dewatering device is a cationic flocculant, and the flocculant in the second flocculant dosing tank of the coagulation sedimentation tank is an anionic flocculant.