CN216711768U

CN216711768U - Serial-type multistage fenton reactor

Info

Publication number: CN216711768U
Application number: CN202122969260.8U
Authority: CN
Inventors: 还春祥
Original assignee: Yixing Jinfanda Environmental Protection Technology Co ltd
Current assignee: Yixing Jinfanda Environmental Protection Technology Co ltd
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-06-10
Anticipated expiration: 2031-11-30

Abstract

The utility model provides a multistage fenton reactor of serial-type, belong to reactor technical field, including former water tank, the clear water tank, communicating pipe, it sets up the raw water pump to switch on the direction according to communicating pipe in proper order between former water tank and the clear water tank, the oxidation unit crowd, reduction device crowd, PH back regulation groove, chemical flocculation groove, the precipitation tank, the oxidation unit crowd comprises five the same oxidation unit series connection, reduction device crowd comprises three the same reduction device series connection, water inlet and outlet are seted up respectively to former water tank box top and clear water tank bottom, each device container bottom all communicates a blow-down pipe through the branch pipe, all communicate a tuber pipe through the branch pipe in the middle of oxidation unit and the reduction device bottom, an air-blower is connected to tuber pipe air inlet end. The oxidation device and the reduction device which are connected in series are arranged, other devices are independently separated and connected in series, the reaction time of the materials in the whole device can be prolonged, the reaction sufficiency is guaranteed, and the effect of reaction treatment is promoted.

Description

Serial-type multistage fenton reactor

Technical Field

The utility model relates to the technical field of reactors, in particular to a series multistage Fenton reactor.

Background

The Fenton reaction is one of a few inorganic chemical reactions named by people name, the reaction process is to oxidize a plurality of known organic compounds such as carboxylic acid, alcohol and ester into an inorganic state by using a mixed solution of hydrogen peroxide (H2O2) and ferrous ion Fe2+, and the reaction has high capability of removing refractory organic pollutants; is widely used for treating printing and dyeing wastewater, oily wastewater, phenol-containing wastewater, coking wastewater, nitrobenzene-containing wastewater, diphenylamine wastewater and other wastewater.

The fenton reaction is usually carried out in a special reaction device, for example, a fenton reactor (patent No. CN 202023292363.7) includes a reaction tank, a base is disposed at the bottom of the reaction tank, a partition is fixedly connected in the reaction tank, the partition divides the reaction tank into an upper part and a lower part, the reaction tank at the lower part of the partition is communicated with a water inlet pipe and a drug feeding pipe a, the reaction tank at the lower part of the partition is also provided with a stirring blade, the stirring blade is connected to a driving motor below the reaction tank in a transmission manner, the partition is provided with nozzles communicating the upper side and the lower side of the partition, the partition is filled with a filler, the inner wall of the reaction tank above the filler is welded with a water outlet weir, the reaction tank at the water outlet weir is communicated with a water outlet pipe, and the top of the reaction tank is fixed with a drug feeding pipe B inserted into the tank.

The existing Fenton reactor is usually carried out in a large reaction vessel, various reaction substances are added into the vessel through opening a plurality of communicating pipes on the wall of the reaction vessel to complete the process of the Fenton reaction, the reaction space is limited by the concentrated reaction mode, the reaction thoroughness is greatly reduced, various disproportionation reactions possibly generated by adding various substances into the same vessel influence the process of the Fenton reaction, and further certain influence is caused on the reaction treatment effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects, and provides the serial multistage Fenton reactor, which is provided with a plurality of serially connected oxidation devices and reduction devices, and other devices are independently separated and connected in series, so that the reaction time of materials in the whole device can be prolonged, the reaction sufficiency is ensured, and the reaction treatment effect is favorably improved.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a multistage fenton reactor of serial-type, including former water tank, the clear water tank, communicating pipe, it sets up the raw water pump to communicate in proper order according to communicating pipe switch-on direction between former water tank and the clear water tank, the oxidation unit crowd, reduction device crowd, PH back-off groove, chemical flocculation groove, the precipitation tank, the oxidation unit crowd comprises five the same oxidation unit series connection, reduction device crowd comprises three the same reduction device series connection, water inlet and outlet are seted up respectively to former water tank box top and clear water tank bottom, each device container bottom all communicates the blow-down pipe through a branch pipe, all communicate an tuber pipe through a branch pipe in the middle of oxidation unit and the reduction device bottom, an air-blower is connected to the tuber pipe air inlet end. The working principle is as follows: firstly, adding wastewater and various reactants into a raw water tank through a water inlet, introducing raw water into the whole device along a communicating pipe under the lifting of a raw water pump, gradually oxidizing in five oxidation devices, and then entering a reduction device for gradual reduction reaction; secondly, the liquid after reaction flows into a PH adjustment tank to adjust the PH value, enters a chemical flocculation tank for flocculation after adjustment, then enters a precipitation tank for precipitation, and supernatant liquid of the precipitation tank flows into a clear water tank and is discharged through a water outlet; finally, the vent at the bottom of each unit container allows the waste in the container to be removed.

Further preferred scheme: the oxidation device and the reduction device are filled with filter material layers, each filter material layer consists of an upper layer of filter material and a lower layer of filter material with different thicknesses, the bottom of a communicating pipe in the device extends into the lower part of the filter material layer, the bottom of the communicating pipe is communicated with a water distribution pipe, and a plurality of water holes are formed in a pipe body of the water distribution pipe. The filter material layer is arranged and the communicating pipe extends into the filter material layer, the water body flows to each part of the filter material layer through the water distribution pipe, and the water body can be dispersed and retained by the arrangement of the filter material layer, so that the reaction is more sufficient.

Further preferred scheme: the branch pipe between the communicating air pipe and the oxidation device or the reduction device is provided with a stop valve and extends into the filter material layer, the end of the branch pipe extending into the pipe orifice of the filter material layer is communicated with an air distribution pipe, and the pipe body of the air distribution pipe is provided with an arc-shaped air hole. The air pipe and the air distribution pipe are arranged, air can be blown into the oxidation device or the reduction device under the action of the air blower, and the filter material layer is subjected to air washing.

Further preferred scheme: a vertical water collecting pipe is arranged in the sedimentation tank, the upper end of the water collecting pipe is communicated with a communicating pipe at the water inlet end of the sedimentation tank, and an inverted funnel-shaped leakage pipe is arranged at the bottom of the water collecting pipe; the water outlet end of the sedimentation tank is provided with a water outlet weir which is communicated with a communicating pipe at the water outlet end of the sedimentation tank. The water collecting pipe is arranged, the inverted funnel-shaped leakage pipe is arranged at the bottom of the water collecting pipe, so that the water body which is extremely rapidly descended by the gravity can be buffered, and the water body is prevented from impacting the bottom of the groove to bring precipitated impurities; the arrangement of the water outlet weir can preferentially discharge the clear water at the edge of the top of the tank.

Further preferred scheme: and a check valve is arranged on a communicating pipe between the raw water pump and the first oxidation device. The check valve can prevent the water body in the oxidation device from flowing backwards, increase the pressure of the raw water pump and be beneficial to reducing the energy consumption of the raw water pump.

Further preferred scheme: the first oxidation device and the chemical flocculation tank are both provided with a PH online instrument extending into the device, the PH back-adjusting tank and the chemical flocculation tank are both provided with a stirring shaft, and the top end of the stirring shaft is in transmission connection with an external driving mechanism. The PH value of the water body in the device can be visually displayed by arranging the PH online instrument, so that the reaction can be monitored conveniently; the stirring shaft can accelerate the speed of the corresponding reaction and improve the reaction efficiency.

Further preferred scheme: ball valves are arranged on branch pipes of the emptying pipe, the devices and the containers. The ball valve can independently carry out blowdown treatment to each device container as required, and the control of blowdown is favorable to.

The utility model provides a series multistage Fenton reactor, which has the following beneficial effects:

1. the utility model is provided with a plurality of oxidation devices and reduction devices which are connected in series, and other devices are independently separated and connected in series, so that the reaction time of materials in the whole device can be prolonged, the sufficiency of the reaction is ensured, and the effect of reaction treatment is favorably improved.

2. The utility model has the advantages that the filter material layer is arranged in the oxidation device and the reduction device, the communicating pipe extends into the filter material layer, the water body flows to each part of the filter material layer through the water distribution pipe, and the arrangement of the filter material layer ensures that the water body can be dispersed and retained, thereby ensuring that the reaction is more complete; the air pipe and the air distribution pipe are arranged, air can be blown into the oxidation device or the reduction device under the action of the air blower, and the filter material layer is subjected to air washing. .

Drawings

Fig. 1 is a schematic view of the overall connection structure of the present invention.

FIG. 2 is a schematic view of the connection structure of the oxidation device group and the reduction device group according to the present invention.

FIG. 3 is a schematic view of the internal structure of the oxidation apparatus or the reduction apparatus according to the present invention.

FIG. 4 is a schematic view of the internal structure of the settling tank of the present invention.

FIG. 5 is a schematic view of the structure of the water distribution pipe of the present invention.

FIG. 6 is a schematic view of the structure of the gas distribution pipe of the present invention.

In FIGS. 1-6: 1. a raw water tank; 2. a water inlet; 3. an oxidation unit; 4. a reduction device; 5. adjusting the pH back to the groove; 6. a stirring shaft; 7. a pH on-line instrument; 8. a chemical flocculation tank; 9. a settling tank; 10. a clear water tank; 11. a water outlet; 12. an emptying pipe; 13. a blower; 14. an air duct; 1401. a stop valve; 15. a raw water pump; 16. a check valve; 17. a ball valve; 18. a communicating pipe; 19. a filter material layer; 20. a water distribution pipe; 21. an air distribution pipe; 2101. air holes; 22. a water collection pipe; 2201. a leak pipe; 23. and (4) an effluent weir.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 6 in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b):

please refer to fig. 1 to 6:

a serial multistage Fenton reactor, connect and set up the raw water pump 15 sequentially according to the direction of the communicating pipe 18 switches on between raw water tank 1 and clear water tank 10, the oxidation unit crowd, the reducing device crowd, PH readjusts the trough 5, chemical flocculation trough 8, settling tank 9, set up a check valve 16 on the communicating pipe 18 between raw water pump 15 and the first oxidation unit 3, the oxidation unit crowd is made up of five identical oxidation units 3 in series, the reducing device crowd is made up of three identical reducing devices 4 in series, the top of the tank body of raw water tank 1 and bottom of the clear water tank 10 are offered the water inlet 2 and outlet 11 respectively, the chemical flocculation trough 8 sets up a PH online instrument 7 stretching into the apparatus, PH readjust the trough 5 and chemical flocculation trough 8 and set up a stirring shaft 6, the top of the stirring shaft 6 is connected with the transmission of the external drive mechanism, each apparatus container bottom connects a blow-down pipe 12 through the branch pipe, ball valves 17 are arranged on branch pipes of the emptying pipe 12 communicated with each device and container, the middles of the bottoms of the oxidation device 3 and the reduction device 4 are communicated with an air pipe 14 through the branch pipes, and the air inlet end of the air pipe 14 is connected with an air blower 13.

The oxidation device 3 and the reduction device 4 are both filled with a filter material layer 19, the filter material layer 19 consists of an upper layer and a lower layer of filter materials with different thicknesses, the bottom of a communicating pipe 18 in the device extends into the lower part of the filter material layer 19, the bottom end of the communicating pipe is communicated with a water distribution pipe 20, and a plurality of water holes are formed in the pipe body of the water distribution pipe 20; the first oxidation unit 3 is provided with a PH on-line meter 7 extending into the unit.

A vertical water collecting pipe 22 is arranged in the sedimentation tank 9, the upper end of the water collecting pipe 22 is communicated with a communicating pipe 18 at the water inlet end of the sedimentation tank 9, and the bottom of the water collecting pipe 22 is provided with an inverted funnel-shaped leakage pipe 2201; the water outlet end of the sedimentation tank 9 is provided with a water outlet weir 23, and the water outlet weir 23 is communicated with a communicating pipe 18 at the water outlet end of the sedimentation tank 9.

The branch pipe between the air pipe 14 and the oxidation device 3 or the reduction device 4 is provided with a stop valve 1401 and extends into the filter material layer 19, the end of the branch pipe extending into the filter material layer 19 is communicated with an air distribution pipe 21, and the pipe body of the air distribution pipe 21 is provided with an arc-shaped air hole 2101.

The working principle is as follows: firstly, adding wastewater and various reactants into a raw water tank 1 through a water inlet 2, introducing raw water into the whole device along a communicating pipe 18 under the lifting of a raw water pump 15, gradually oxidizing in five oxidation devices 3, and then entering a reduction device 4 for gradual reduction reaction; secondly, the liquid after reaction flows into a PH adjusting-back tank 5 to adjust the PH value, enters a chemical flocculation tank 8 for flocculation after the adjustment is finished, then enters a precipitation tank 9 for precipitation, and supernatant liquid of the precipitation tank 9 flows into a clear water tank 10 and is discharged through a water outlet 11; finally, the vent 12 at the bottom of each unit container allows the waste in the container to be removed.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a multistage fenton's reactor of serial-type, includes former water tank (1), clear water tank (10), communicating pipe (18), its characterized in that: former water tank (1) and clear water tank (10) between communicate the direction according to communicating pipe (18) to switch on and set up raw water pump (15) in proper order, oxidation unit crowd, reduction device crowd, PH back adjustment groove (5), chemical flocculation groove (8), precipitation tank (9), oxidation unit crowd comprises five the same oxidation unit (3) series connection, reduction device crowd comprises three the same reduction device (4) series connection, water inlet (2) and outlet (11) are seted up respectively to former water tank (1) box top and clear water tank (10) bottom, each device container bottom all communicates a blow-down pipe (12) through the branch pipe, all communicate an tuber pipe (14) through a branch pipe in the middle of oxidation unit (3) and reduction device (4) bottom, an air-blower (13) is connected to tuber pipe (14) air inlet end.

2. A series-connected multi-stage fenton reactor according to claim 1, wherein: the oxidation device (3) and the reduction device (4) are filled with a filter material layer (19), the filter material layer (19) is composed of an upper layer of filter material and a lower layer of filter material with different thicknesses, the bottom of a communicating pipe (18) in the device extends into the lower part of the filter material layer (19) and the bottom of the communicating pipe is communicated with a water distribution pipe (20), and a plurality of water holes are formed in the body of the water distribution pipe (20).

3. A series-connected multi-stage fenton reactor according to claim 2, wherein: and a branch pipe between the communication of the air pipe (14) and the oxidation device (3) or the reduction device (4) is provided with a stop valve (1401) and extends into the filter material layer (19), the branch pipe extends into the pipe orifice end of the filter material layer (19) and is communicated with an air distribution pipe (21), and the pipe body of the air distribution pipe (21) is provided with an arc-shaped air hole (2101).

4. A series multistage fenton reactor according to claim 1, characterized in that: a vertical water collecting pipe (22) is arranged in the sedimentation tank (9), the upper end of the water collecting pipe (22) is communicated with a communicating pipe (18) at the water inlet end of the sedimentation tank (9), and the bottom of the water collecting pipe (22) is provided with an inverted funnel-shaped drain pipe (2201); the water outlet end of the sedimentation tank (9) is provided with a water outlet weir (23), and the water outlet weir (23) is communicated with a communicating pipe (18) at the water outlet end of the sedimentation tank (9).

5. A series-connected multi-stage fenton reactor according to claim 1, wherein: a check valve (16) is arranged on a communicating pipe (18) between the raw water pump (15) and the first oxidation device (3).

6. A series multistage fenton reactor according to claim 1, characterized in that: a PH online instrument (7) extending into the oxidation device (3) and the chemical flocculation tank (8) are arranged, a stirring shaft (6) is arranged in the PH adjustment-back tank (5) and the chemical flocculation tank (8), and the top end of the stirring shaft (6) is in transmission connection with an external driving mechanism.

7. A series-connected multi-stage fenton reactor according to claim 1, wherein: and ball valves (17) are arranged on branch pipes of the emptying pipe (12) communicated with the devices and the containers.