CN210915481U - Novel fenton catalytic oxidation reaction of continuous water intaking intermittent type drainage device - Google Patents
Novel fenton catalytic oxidation reaction of continuous water intaking intermittent type drainage device Download PDFInfo
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Abstract
A novel Fenton catalytic oxidation reaction device with continuous water inlet and intermittent water drainage comprises a group A reactor, a group B reactor connected with the group A reactor in parallel and a Fenton dosing system; the top of the group A reactor is connected with a liquid level meter, the upper part of the side wall of the group A reactor is respectively communicated with a water inlet pipeline and a dosing pipeline, valves are arranged on the water inlet pipeline and the dosing pipeline, the lower part of the side wall of the group A reactor is connected with a drainage pipeline, one end of the drainage pipeline is provided with a drain valve, the other end of the drainage pipeline is communicated with a decanter, and the lower part of the group A reactor is also provided with an aeration and sludge discharge device. The upper part of the side wall of the group B reactor is respectively communicated with a water inlet pipeline and a dosing pipeline, the structure of the group B reactor is the same as that of the group A reactor, and the group A reactor and the group B reactor alternately run. The utility model discloses area is little, and simple structure, operation maintenance are convenient, realize continuous type work, improve work efficiency.
Description
Technical Field
The utility model belongs to the technical field of the environmental engineering device, concretely relates to area is little, simple structure, operation maintenance convenient's sequencing batch formula fenton catalytic oxidation reaction unit of intermittent type drainage of intaking in succession.
Background
The essence of the Fenton process is divalent iron ions (Fe)2+) The hydroxyl radical is generated by the catalysis of chain reaction between the hydroxyl radical and hydrogen peroxide, has stronger oxidation capacity, and has oxidation potential second to fluorine which is as high as 2.80V. In addition, the hydroxyl free radical has high electronegativity or electrophilicity, and the electron affinity of the hydroxyl free radical is as high as 569.3kJ, so that the Fenton reagent has strong addition reaction characteristics, can indiscriminately oxidize most organic matters in water, and is particularly suitable for the oxidation treatment of organic wastewater which is difficult to biodegrade or to perform effective chemical oxidation generally.
The technology is taken as a conventional physical and chemical treatment technology. Generally, the method is used for removing refractory substances in the wastewater through four processes of dosing mixing, neutralization, flocculation and gravity precipitation. The technology is mainly applied to pretreatment and advanced treatment of various waste water.
At present, a conventional fenton catalytic oxidation reaction device is divided into 4 sections according to the reaction process.
The 1 st section is a Fenton catalytic oxidation reaction zone, and a certain amount of concentrated sulfuric acid, hydrogen peroxide and ferrous sulfate are continuously added, and mechanical stirring (80-120 r/min) at a certain rotating speed is carried out, wherein the reactor residence time is as follows: 60-90 min;
the 2 nd section is a neutralization reaction zone, a certain amount of liquid caustic soda is continuously added, mechanical stirring (60-80 r/min) at a certain rotating speed is carried out, and the residence time of the reactor is as follows: 15-30 min;
and the 3 rd section is a flocculation reaction area, a certain amount of coagulant aid is continuously added, mechanical stirring (30-40 r/min) at a certain rotating speed is carried out, and the residence time of the reactor is as follows: 15-30 min;
the 4 th section is a gravity settling zone which is provided with a gravity settling tankAnd performing sludge-water separation to ensure that the effluent is basically free of suspended matters. Effective residence time of the reactor is generally>2h, surface load is general<1.5m3/m2.h。
The Fenton catalytic oxidation reaction device has the advantages of large occupied area, complex structure, high cost and low working efficiency.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a fenton catalytic oxidation reaction device of continuous water intake intermittent type drainage that area is little, simple structure, operation maintenance are convenient.
The technical scheme of the utility model as follows:
a novel Fenton catalytic oxidation reaction device with continuous water inlet and intermittent water drainage comprises a group A reactor, a group B reactor and a Fenton dosing system; the Fenton agent dosing system comprises a sulfuric acid dosing system, a ferrous sulfate dosing system, a hydrogen peroxide dosing system, an alkali liquor dosing system and a coagulant aid dosing system, the top of the group A reactor is connected with a liquid level meter, the upper part of the side wall of the group A reactor is respectively communicated with a water inlet pipeline and a dosing pipeline, valves are arranged on the water inlet pipeline and the dosing pipeline, the lower part of the side wall of the group A reactor is connected with a drainage pipeline, one end of the drainage pipeline is provided with a drainage valve, the other end of the drainage pipeline is communicated with a decanter, and the lower part of the group A reactor is also provided with an aeration and sludge discharge device; the reactor of group B is parallelly connected with the reactor of group A, reactor lateral wall upper portion of group B communicates with water intake pipe and dosing pipeline respectively, the structure of reactor of group B is the same with the structure of reactor of group A, reactor of group A and reactor alternate operation of group B, and when the reactor of group A fills water mixed reaction stage, reactor of group B gets into and cuts off water and deposits drainage mud stage.
The water-filling mixing reaction stage comprises Fenton catalytic reaction, neutralization reaction and flocculation reaction.
The chemical adding pipeline comprises a sulfuric acid chemical adding pipeline, a ferrous sulfate chemical adding pipeline, a hydrogen peroxide chemical adding pipeline, an alkali liquid chemical adding pipeline and a coagulant aid chemical adding pipeline, and the water inlet pipeline, the sulfuric acid chemical adding pipeline, the ferrous sulfate chemical adding pipeline, the hydrogen peroxide chemical adding pipeline, the alkali liquid chemical adding pipeline and the coagulant aid chemical adding pipeline are respectively provided with a water inlet valve, a sulfuric acid chemical adding valve, a ferrous sulfate chemical adding valve, a hydrogen peroxide chemical adding valve, an alkali liquid chemical adding valve and a coagulant aid chemical adding valve.
Preferably, a control valve and an opening regulating valve are arranged on an aeration and sludge discharge pipeline connected with the outside of the aeration and sludge discharge device in the group A reactor and the group B reactor, and the other end of the aeration and sludge discharge pipeline is respectively connected with a sludge discharge pump and an aeration fan; when water is filled for mixing reaction, the device is connected with an aeration fan and carries out reaction through perforation aeration stirring; when the sludge is discharged, the device is connected with a sludge discharge pump, the sludge is discharged by power, the operation is flexible, and the structure is simple.
Preferably, the novel Fenton catalytic oxidation reaction device for continuous water inlet and intermittent water drainage further comprises a PLC control system, wherein the water inlet valves of the group A reactor and the group B reactor, a sulfuric acid dosing system, a ferrous sulfate dosing system, a hydrogen peroxide dosing system, an alkali liquor dosing system, a coagulant aid dosing system, a sulfuric acid dosing valve, a ferrous sulfate dosing valve, a hydrogen peroxide dosing valve, an alkali liquor dosing valve, a coagulant aid dosing valve, a liquid level meter, a decanter, an opening regulating valve, a control valve, a sludge discharge pump and an aeration fan are all connected with the PLC control system.
Preferably, the water inlet valve, the sulfuric acid dosing valve, the ferrous sulfate dosing valve, the hydrogen peroxide dosing valve, the alkali liquor dosing valve, the coagulant aid dosing valve and the control valve are electric butterfly valves or electric ball valves or electromagnetic valves.
The utility model has the advantages as follows:
1. the occupied area is small. The original 4-section reaction zone is simplified into a group A reaction zone and a group B reaction zone, and the two reaction zones are total.
2. The reaction power of the utility model is perforated pipe aeration stirring, the reactor has simple structure and less power equipment.
3. The reaction strength can be adjusted: the reaction intensity is controlled by adjusting the opening degree of a valve of the aeration pipe.
4. The reaction time can be adjusted. The reaction time is adjusted at any time through the linkage control of the PLC control system, the equipment and the electric valve.
5. The precipitation effect is good: the settling time is adjustable, the settling effect is good, and the effect of mud-water separation is fully proved.
6. The sludge is discharged thoroughly. The problems of sludge discharge dead angle and sludge floating in a conventional reactor settling zone are avoided.
And 7, the A group of reactors and the B group of reactors operate alternately, so that continuous work is realized, and the working efficiency is improved.
Drawings
FIG. 1 is a schematic structural diagram of a novel Fenton catalytic oxidation reaction device with continuous water feeding and intermittent water discharging;
fig. 2 is a schematic diagram of the connection between the PLC control system and other structures.
Wherein, 1 is a water inlet pipeline, 2 is a sulfuric acid dosing system, 3 is a ferrous sulfate dosing system, 4 is a hydrogen peroxide dosing system, 5 is an alkali liquor dosing system, 6 is a coagulant aid dosing system, 7 is a water inlet valve, 8 is a sulfuric acid dosing valve, 9 is a ferrous sulfate dosing valve, 10 is a hydrogen peroxide dosing valve, 11 is an alkali liquor dosing valve, 12 is a coagulant aid dosing valve, 13 is a drain valve, 14 is a decanter, 15 is an aeration and sludge discharge device, 16 is a control valve, 17 is an opening regulating valve, 18 is a sludge discharge pump, 19 is an aeration fan, 20 is a group A reactor, 21 is a group B reactor, 22 is a liquid level meter, and 23 is a PLC control system.
Detailed Description
Example 1
A novel continuous water feeding and intermittent water discharging Fenton catalytic oxidation reaction device comprises: a coagulant agent adding system, a coagulant aid adding system 6, a PLC control system 23, a group A reactor 20 and a group B reactor 21 which is connected with the group A reactor 20 in parallel; the Fenton dosing system comprises a sulfuric acid dosing system 2, a ferrous sulfate dosing system 3, a hydrogen peroxide dosing system 4, an alkali liquor dosing system 5 and a coagulant aid dosing system, the top of the group A reactor 20 is connected with a liquid level meter 22, the upper part of the side wall of the group A reactor is respectively communicated with a water inlet pipeline and a dosing pipeline, the dosing pipeline comprises a sulfuric acid dosing pipeline, a ferrous sulfate dosing pipeline, a hydrogen peroxide dosing pipeline, an alkali liquor dosing pipeline and a coagulant aid dosing pipeline, the water inlet pipeline 1 and the Fenton dosing pipeline are respectively provided with a water inlet valve 7, a sulfuric acid dosing valve 8, a ferrous sulfate dosing valve 9, a hydrogen peroxide dosing valve 10, an alkali liquor dosing valve 11 and a coagulant aid dosing valve 12, the lower part of the side wall of the group A reactor 20 is connected with a drainage pipeline, one end of the drainage pipeline is provided with a drainage valve 13, and the other end, the lower part of the A group reactor 20 is also provided with an aeration and sludge discharge device 15, a control valve 16 and an opening regulating valve 17 are arranged on an aeration and sludge discharge pipeline connected outside the aeration and sludge discharge device 15, and the other end of the aeration and sludge discharge pipeline is respectively connected with a sludge discharge pump 18 and an aeration fan 19.
The top of the B group reactor 21 is connected with a liquid level meter 22, the upper part of the side wall of the B group reactor is respectively communicated with a water inlet pipeline and a dosing pipeline, the dosing pipeline comprises a sulfuric acid dosing pipeline, a ferrous sulfate dosing pipeline, a hydrogen peroxide dosing pipeline, an alkali liquor dosing pipeline and a coagulant aid dosing pipeline, the water inlet pipeline, the coagulant dosing pipeline and the coagulant aid dosing pipeline are respectively provided with a water inlet valve 7, a sulfuric acid dosing valve 8, a ferrous sulfate dosing valve 9, a hydrogen peroxide dosing valve 10, an alkali liquor dosing valve 11 and a coagulant aid dosing valve 12, the lower part of the side wall of the B group reactor 20 is connected with a drainage pipeline, one end of the drainage pipeline is provided with a drainage valve 13, the other end of the drainage pipeline is communicated with a decanter 14, the lower part of the B group reactor 21 is also provided with an aeration and sludge discharge device 15, and the aeration and sludge discharge device 15 is externally connected with a, The opening degree regulating valve 17 and the other end are respectively connected with a sludge pump 18 and an aeration fan 19. The reactors of the group A and the reactors of the group B alternately operate, and when the reactors of the group A are filled with water and mixed for reaction, the reactors of the group B enter a water-stop precipitation water-drainage sludge-discharge stage.
The water-filling mixing reaction stage comprises Fenton catalytic reaction, neutralization reaction and flocculation reaction.
The water inlet valve 7, the sulfuric acid dosing system 2, the ferrous sulfate dosing system 3, the hydrogen peroxide dosing system 4, the alkali liquor dosing system 5, the coagulant aid dosing system 6, the sulfuric acid dosing valve 8, the ferrous sulfate dosing valve 9, the hydrogen peroxide dosing valve 10, the alkali liquor dosing valve 11, the coagulant aid dosing valve 12, the liquid level meter 22, the decanter 14, the opening regulating valve 17, the control valve 16, the sludge discharge pump 18 and the aeration fan 19 are all connected with the PLC control system 23.
The water inlet valve 7, the sulfuric acid dosing valve 8, the ferrous sulfate dosing valve 9, the hydrogen peroxide dosing valve 10, the alkali liquor dosing valve 11, the coagulant aid dosing valve 12 and the control valve 16 are electric butterfly valves or electric ball valves or electromagnetic valves.
The utility model relates to a novel fenton catalytic oxidation reaction of intermittent type drainage of intaking in succession device's working process as follows:
the reactors of the group A and the reactors of the group B alternately operate, and when the reactors of the group A are filled with water and mixed for reaction, the reactors of the group B enter a water-stop precipitation water-drainage sludge-discharge stage. The specific operation process of the reactor in the group A or the reactor in the group B is as follows:
1. water filling and mixing reaction stage: the reaction is divided into the following 3 sections, and the total reaction time is controlled: 90-150 min.
1) Fenton catalytic reaction: adding medicines while feeding water, continuously opening a sulfuric acid medicine adding system 2, a ferrous sulfate medicine adding system 3 and a hydrogen peroxide medicine adding system 4, opening a water inlet valve 7, a sulfuric acid medicine adding valve 8, a ferrous sulfate medicine adding valve 9 and a hydrogen peroxide medicine adding valve 10, and controlling the pH value 3-4 in the reaction process. Meanwhile, the control valve 16 is opened, and the opening of the opening regulating valve 17 is controlled by the PLC control system 23 to perform Fenton catalytic stirring reaction, so that the reaction time is controlled: and (5) closing the sulfuric acid dosing system 2, the ferrous sulfate dosing system 3, the hydrogen peroxide dosing system, the water inlet valve 7, the sulfuric acid dosing valve 8, the ferrous sulfate dosing valve 9 and the hydrogen peroxide dosing valve 10 after 60-90 min.
2) And (3) neutralization reaction: continuously starting the alkali liquor dosing system 5, starting the alkali liquor dosing valve 11, and controlling the pH value of the reaction process to be 7.5-8.5; and then the opening of the opening regulating valve 17 is controlled by the PLC control system 23 to perform neutralization and stirring reaction, and the reaction time is controlled: and (5) closing the alkali liquor dosing system 5 and the alkali liquor dosing valve 11 after 15-30 min.
3) Flocculation reaction: and (3) starting the coagulant aid dosing system 6, starting the coagulant aid dosing valve 12, and simultaneously controlling the opening of the opening regulating valve 17 through the PLC control system 23 to perform flocculation stirring reaction. Controlling the reaction time: and (5) closing the coagulant aid dosing system 6, the coagulant aid dosing valve 12 and the control valve 16 after 15-30 min.
2. Precipitation and water and sludge discharge:
1) a precipitation stage: and (4) closing the aeration fan 19, stopping the reaction, performing gravity settling, and entering a drainage stage after settling for 45-60 min.
2) And (3) draining water and mud: starting the decanter 14 for draining, after the decanter 14 operates to a certain liquid level, resetting the decanter 14 and then closing, and draining the treated water to the next unit; entering a sludge discharge stage; and (3) starting a sludge discharge pump 18, enabling the sludge to enter an aeration and sludge discharge pipeline through the aeration and sludge discharge device 15, then entering a subsequent sludge treatment unit, after the sludge is discharged to a specified liquid level by the sludge pump 18, closing the sludge discharge pump 18, re-entering water, and entering the next cycle. And controlling the time for draining water and mud to be 45-60 min.
Claims (4)
1. The utility model provides a novel fenton catalytic oxidation reaction of intermittent type drainage of intaking in succession device which characterized in that: comprises a group A reactor (20), a group B reactor (21) connected with the group A reactor (20) in parallel and a Fenton dosing system; the Fenton medicine system includes: the device comprises a sulfuric acid dosing system (2), a ferrous sulfate dosing system (3), a hydrogen peroxide dosing system (4), an alkali liquor dosing system (5) and a coagulant aid dosing system (6), wherein the top of a group A reactor (20) is connected with a liquid level meter (22), the upper part of the side wall of the group A reactor (20) is respectively communicated with a water inlet pipeline (1) and a dosing pipeline, valves are arranged on the water inlet pipeline (1) and the dosing pipeline, the lower part of the side wall of the group A reactor is connected with a drainage pipeline, one end of the drainage pipeline is provided with a drainage valve (13), the other end of the drainage pipeline is communicated with a decanter (14), and the lower part of the group A reactor (20) is also provided with an aeration and sludge discharge device (15); the utility model discloses a reactor, including B group reactor (21), water inlet pipeline (1) and dosing pipeline, B group reactor (21) lateral wall upper portion communicates with water intake pipe (1) and dosing pipeline respectively, the structure of B group reactor (21) is the same with the structure of A group reactor (21), A group reactor (20) and B group reactor (21) alternate operation, and when A group reactor fill water mixed reaction stage, B group reactor gets into and stops water and deposits drainage mud stage.
2. A novel continuous water-feeding intermittent-water-draining fenton catalytic oxidation reaction device according to claim 1, characterized in that: the chemical adding pipeline comprises a sulfuric acid chemical adding pipeline, a ferrous sulfate chemical adding pipeline, a hydrogen peroxide chemical adding pipeline, an alkali liquor chemical adding pipeline and a coagulant aid chemical adding pipeline, wherein a water inlet valve (7), a sulfuric acid chemical adding valve (8), a ferrous sulfate chemical adding valve (9), a hydrogen peroxide chemical adding valve (10), an alkali liquor chemical adding valve (11) and a coagulant aid chemical adding valve (12) are respectively arranged on the water inlet pipeline (1), the sulfuric acid chemical adding pipeline, the ferrous sulfate chemical adding pipeline, the hydrogen peroxide chemical adding pipeline, the alkali liquor chemical adding pipeline and the coagulant aid chemical adding.
3. A novel continuous water-feeding intermittent-water-draining fenton catalytic oxidation reaction device as claimed in claim 1 or 2, characterized in that: the aeration and sludge discharge pipeline connected with the outside of the aeration and sludge discharge device (15) is provided with a control valve (16) and an opening regulating valve (17), and the other end of the aeration and sludge discharge pipeline is respectively connected with a sludge discharge pump (18) and an aeration fan (19).
4. A novel continuous water-feeding intermittent-water-draining fenton catalytic oxidation reaction device according to claim 1, characterized in that: the device is characterized by further comprising a PLC control system (23), wherein the sulfuric acid dosing system (2), the ferrous sulfate dosing system (3), the hydrogen peroxide dosing system (4), the alkali liquor dosing system (5) and the coagulant aid dosing system (6), the water inlet valve (7), the sulfuric acid dosing valve (8), the ferrous sulfate dosing valve (9), the hydrogen peroxide dosing valve (10), the alkali liquor dosing valve (11), the coagulant aid dosing valve (12), the liquid level meter (22), the decanter (14), the opening regulating valve (17), the control valve (16), the sludge discharge pump (18) and the aeration fan (19) are all connected with the PLC control system (23).
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113620443A (en) * | 2021-08-27 | 2021-11-09 | 金锣水务有限公司 | Sewage treatment regulating tank and method for regulating sewage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113620443A (en) * | 2021-08-27 | 2021-11-09 | 金锣水务有限公司 | Sewage treatment regulating tank and method for regulating sewage |
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Address after: Room 402-403, floor 4, no.6, Honggang Road, Ganjingzi District, Dalian City, Liaoning Province, 116000 Patentee after: Zhongyi Environmental Protection Technology (Dalian) Co.,Ltd. Address before: 116000 No.1, floor 2, unit 2, No.11, Xinhongyuan, Ganjingzi District, Dalian City, Liaoning Province Patentee before: Zhongyi Environmental Protection Technology (Dalian) Co.,Ltd. |