CN114100244B

CN114100244B - High-efficient PTA mother liquor advanced waste treatment and cobalt manganese recovery system

Info

Publication number: CN114100244B
Application number: CN202111436129.3A
Authority: CN
Inventors: 俞盛; 朱吉祥; 孙军彪; 周孟林
Original assignee: Wuxi Xingsheng Environmental Protection Equipment Co ltd
Current assignee: Wuxi Xingsheng Environmental Protection Equipment Co ltd
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2023-03-24
Anticipated expiration: 2041-11-30
Also published as: CN114100244A

Abstract

The invention relates to a high-efficiency PTA mother liquor wastewater advanced treatment and cobalt-manganese recovery system, which comprises a mother liquor filter, a first-stage adjusting tank, an iron removal filter, a second-stage adjusting tank, a cobalt-manganese filter and a sewage treatment unit which are sequentially connected, wherein an alkali liquor tank is arranged between the first-stage adjusting tank and the second-stage adjusting tank. The invention adopts sectional treatment, has good iron removal effect, meets the discharge standard of sewage and has high overall efficiency.

Description

High-efficient PTA mother liquor advanced waste treatment and cobalt manganese recovery system

Technical Field

The invention relates to a wastewater treatment system, in particular to a PTA mother liquor wastewater treatment system.

Background

In the prior art, some PTA mother liquor is directly discharged after being simply filtered to remove impurities, so that resources are not reasonably utilized, the nature is polluted, and the ecological environment is irreversibly damaged. Most of the PTA mother liquor is treated by adopting recovery processes, but the recovery processes are simpler, PA and PT solids cannot be separated out well, in the subsequent treatment process, the treatment of metal ions is not in place, the treatment effect is not obvious, the recovery rate of cobalt and manganese is low, and the treated wastewater still does not reach the discharge standard.

In addition, the water distribution device of the traditional iron removal filter is of a structure that a dome-shaped porous plate is added with cobblestones, the water distribution of the structure is not uniform enough, bias flow is easy to generate, filter materials are easy to form layers, the quality of outlet water cannot well meet the requirement, and the traditional filter adopts single water for backwashing, so that the flushing effect is poor.

Disclosure of Invention

The purpose of the invention is as follows: the invention aims to overcome the defects in the prior art and provide a high-efficiency PTA mother liquor wastewater advanced treatment and cobalt-manganese recovery system which has the advantages of sectional treatment, good iron removal effect, sewage meeting the discharge standard and high overall efficiency.

The technical scheme is as follows: in order to solve the technical problems, the invention provides a high-efficiency PTA mother liquor wastewater advanced treatment and cobalt-manganese recovery system, which comprises a mother liquor filter, a first-stage adjusting tank, an iron removal filter, a second-stage adjusting tank, a cobalt-manganese filter and a sewage treatment unit which are sequentially connected, wherein an alkali liquor tank is arranged between the first-stage adjusting tank and the second-stage adjusting tank, the iron removal filter comprises a shell, an exhaust pipe connected with the upper end of the shell is arranged at the upper end of the shell, a porous plate is arranged at the lower side of the interior of the shell, water caps are uniformly distributed on the porous plate, a quartz sand layer is arranged at the upper side of the porous plate, an opening connected with the upper end of a connecting pipe is arranged on the outer wall of the shell at the upper side of the quartz sand layer, the lower end of the connecting pipe is connected with a water inlet and a backwashing water outlet through a three-way pipe, and a four-way pipe is arranged on the side wall of the shell at the lower side of the porous plate, the four-way pipe is connected with a backwashing water inlet, a forward washing water outlet and a produced water outlet, the side wall of the shell at the lower side of the perforated plate is also provided with an air inlet, the sewage treatment unit comprises a plurality of raw water buckets and a cleaning assembly, the raw water buckets comprise a bucket body and a sealing cover, the sealing cover is arranged at the lower end of the bucket body in a sealing manner, the upper end of each raw water bucket is connected with a water inlet pipe, the lower end of each raw water bucket is connected with a water outlet pipe, the water outlet pipe is connected with the secondary treatment assembly through a water pump, the cleaning assembly comprises a mesh filter element which is fixedly connected to the inner side of the sealing cover and arranged in the bucket body, the central position of the sealing cover is in threaded connection with a screw rod, the upper end of the screw rod is rotatably connected to the central position at the upper end in the bucket body, the lower end of the screw rod is connected with a positioning seat, a driving assembly is arranged in the positioning seat, and a horizontal conical gear which is arranged in the driving assembly is fixedly connected to the peripheral side of the lower end of the screw rod, and the horizontal bevel gear is in meshed connection with a vertical bevel gear, and the vertical bevel gear is connected with an external driving end.

Further, a PTA mother liquor wastewater storage tank is arranged at the front end of the mother liquor filter, a filtered iron recovery device is arranged below the iron removal filter, and a cobalt-manganese recovery device is arranged below the cobalt-manganese filter.

Furthermore, an observation window is arranged on the shell, and a control valve is arranged on the air inlet.

Furtherly, lower extreme week side fixedly connected with holding ring on the former water bucket, and the holding ring passes through fixed fittings and external contact surface between fixed connection, it is cylindric setting to separate the net filter core, and separates that net filter core week side is the fretwork setting, it sets up to be the clearance between net filter core and the staving inside wall.

Has the advantages that: compared with the prior art, the invention has the following remarkable advantages: the invention has reasonable integral structure arrangement, adopts a mother liquor filter, a first-stage adjusting tank, an iron removal filter, a second-stage adjusting tank, a cobalt-manganese filter and a sewage treatment unit, and has sectional treatment effect, the iron removal filter adopts a perforated plate water adding cap type structure, the structure ensures more uniform water distribution, no bias flow is generated, filter materials are not easy to disorder and leak, the water quality of outlet water is greatly improved, and the iron removal effect is good.

Drawings

FIG. 1 is a schematic diagram of the framework of the present invention;

FIG. 2 is a schematic view of the external structure of the iron removing filter according to the present invention;

FIG. 3 is a schematic view of the internal structure of an iron removing filter according to the present invention;

FIG. 4 is a schematic view showing the overall construction of a sewage treatment unit according to the present invention;

FIG. 5 is a schematic view of a raw water tank according to the present invention;

fig. 6 is a schematic view of the internal structure of the positioning seat of the present invention.

Detailed Description

The invention is further described below with reference to the figures and examples.

As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, the system for advanced treatment of high efficiency PTA mother liquor wastewater and cobalt manganese recovery according to the present invention comprises a mother liquor filter 1, a first-stage adjusting tank 2, an iron removal filter 3, a second-stage adjusting tank 4, a cobalt manganese filter 5 and a sewage treatment unit 6, which are connected in sequence, wherein an alkali liquor tank 7 is disposed between the first-stage adjusting tank 2 and the second-stage adjusting tank 4, a PTA mother liquor wastewater storage tank 33 is disposed at the front end of the mother liquor filter 1, an iron filtering recovery device 34 is disposed below the iron removal filter 3, a cobalt manganese recovery device 35 is disposed below the cobalt manganese filter 5, the iron removal filter 3 comprises a housing 8, an exhaust pipe 9 connected to the upper end of the housing 8, a porous plate 10 is disposed at the lower side of the housing 8, water caps 11 are uniformly distributed on the porous plate 10, the upper side of the perforated plate 10 is provided with a quartz sand layer 12, the outer wall of the upper shell 8 of the quartz sand layer 12 is provided with an opening connected with the upper end of a connecting pipe 13, the lower end of the connecting pipe 13 is connected with a water inlet 14 and a backwashing water outlet 15 through a three-way pipe, the side wall of the shell 8 positioned at the lower side of the perforated plate 10 is provided with a four-way pipe, the four-way pipe is connected with a backwashing water inlet 16, a forward washing water outlet 17 and a produced water outlet 18, the side wall of the shell 8 positioned at the lower side of the perforated plate 10 is also provided with an air inlet 19, the shell 8 is provided with an observation window 36, the air inlet 19 is provided with a control valve 37, the sewage treatment unit 6 comprises a raw water bucket 20 and a cleaning component 21, the raw water buckets 20 are provided with a plurality of parts, the positioning rings 38 are fixedly connected with the peripheral sides of the upper and lower ends of the raw water buckets 20, and the positioning rings 38 are fixedly connected with external contact surfaces through fixing fittings, former cask 20 includes staving 22 and sealed lid 23, and sealed lid 23 seals and set up at staving 22 lower extreme, 20 upper end joints of former cask have inlet tube 24, and has connect outlet pipe 25 under the former cask 20, outlet pipe 25 passes through water pump 26 and is connected with secondary treatment subassembly 27, clearance subassembly 21 includes separates net filter core 28 fixed connection at sealed lid 23 inboardly, and separates net filter core 28 and set up inside staving 22, sealed lid 23 central point threaded connection has screw rod 29, and screw rod 29 upper end rotation connects at the inside upper end central point of staving 22, screw rod 29 lower extreme is connected with positioning seat 30, and positioning seat 30 embeds there is drive assembly, horizontal conical gear 31 fixed connection that drive assembly includes is in screw rod 29 lower extreme week side, and horizontal conical gear 31 meshing is connected with perpendicular conical gear 32, perpendicular conical gear 32 is connected with external drive end, it is cylindric setting to separate net filter core 28, and separates net filter core 28 week side and be the fretwork setting, it sets up to separate to be the clearance between net filter core 28 and the staving 22 inside wall.

The invention has reasonable integral structure arrangement, adopts a mother liquor filter, a first-stage adjusting tank, an iron removal filter, a second-stage adjusting tank, a cobalt-manganese filter and a sewage treatment unit, and has sectional treatment effect, the iron removal filter adopts a perforated plate water adding cap type structure, the structure ensures more uniform water distribution, no bias flow is generated, filter materials are not easy to disorder and leak, the water quality of outlet water is greatly improved, and the iron removal effect is good.

The present invention provides a thought and a method, and a method and a way for implementing the technical scheme are many, the above is only a preferred embodiment of the present invention, it should be noted that, for a person skilled in the art, a plurality of improvements and modifications can be made without departing from the principle of the present invention, and the improvements and modifications should be regarded as the protection scope of the present invention, and each component not explicitly described in the embodiment can be implemented by the prior art.

Claims

1. The utility model provides a high-efficient PTA mother liquor advanced waste treatment and cobalt manganese recovery system which characterized in that: the device comprises a mother liquor filter (1), a first section adjusting tank (2), an iron removal filter (3), a second section adjusting tank (4), a cobalt-manganese filter (5) and a sewage treatment unit (6) which are sequentially connected, wherein an alkali liquor tank (7) is arranged between the first section adjusting tank (2) and the second section adjusting tank (4), the iron removal filter (3) comprises a shell (8), an exhaust pipe (9) connected with the upper end of the shell (8) is arranged at the upper end of the shell, a porous plate (10) is arranged at the lower side of the inner part of the shell (8), water caps (11) are uniformly distributed on the porous plate (10), a quartz sand layer (12) is arranged at the upper side of the porous plate (10), an opening connected with the upper end of a connecting pipe (13) is arranged on the outer wall of the shell (8) at the upper side of the quartz sand layer (12), the lower end of the connecting pipe (13) is connected with a water inlet (14) and a backwashing water outlet (15) through a three-way pipe, a four-way pipe is arranged on the side wall of the shell (8) at the lower side of the porous plate (10), a backwashing water outlet (10) is connected with a backwashing water inlet (16), a sewage treatment unit (21) and a sewage treatment unit (6) arranged at the lower side wall of the sewage treatment unit (21) and a backwashing water outlet) at the lower side of the porous plate treatment unit, the raw water bucket (20) is provided with a plurality of raw water buckets, each raw water bucket (20) comprises a bucket body (22) and a sealing cover (23), each sealing cover (23) is arranged at the lower end of the corresponding bucket body (22) in a sealing mode, a water inlet pipe (24) is connected to the upper end of each raw water bucket (20), a water outlet pipe (25) is connected to the lower end of each raw water bucket (20), each water outlet pipe (25) is connected with a secondary treatment assembly (27) through a water pump (26), a net separating filter element (28) included in each cleaning assembly (21) is fixedly connected to the inner side of each sealing cover (23), each net separating filter element (28) is arranged inside each bucket body (22), a screw rod (29) is in threaded connection with the central position of the corresponding sealing cover (23), the upper end of each screw rod (29) is rotatably connected to the central position of the inner end of each bucket body (22), a positioning seat (30) is connected to the lower end of each screw rod (29), a driving assembly is arranged inside each positioning seat (30), a horizontal bevel gear (31) included in each driving assembly is fixedly connected to the lower end of each screw rod (29), a vertical bevel gear (32) in a meshing connection mode, and the vertical bevel gear (32) is connected with the driving end of the external;

a PTA mother liquor wastewater storage tank (33) is arranged at the front end of the mother liquor filter (1), a filtered iron recovery device (34) is arranged below the iron removal filter (3), and a cobalt and manganese recovery device (35) is arranged below the cobalt and manganese filter (5);

an observation window (36) is arranged on the shell (8), and a control valve (37) is arranged on the air inlet (19);

former cask (20) upper and lower end week side fixedly connected with holding ring (38), and holding ring (38) are through fixed connection between fixed part and the external contact surface, it is cylindric setting to separate net filter core (28), and separates that net filter core (28) week side is the fretwork setting, it sets up to be the clearance to separate between net filter core (28) and staving (22) inside wall.