CN214327460U - Reinforced Fenton oxidation method wastewater treatment device - Google Patents
Reinforced Fenton oxidation method wastewater treatment device Download PDFInfo
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- CN214327460U CN214327460U CN202023316135.9U CN202023316135U CN214327460U CN 214327460 U CN214327460 U CN 214327460U CN 202023316135 U CN202023316135 U CN 202023316135U CN 214327460 U CN214327460 U CN 214327460U
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Abstract
The utility model provides a wastewater treatment device by a reinforced Fenton oxidation method, belonging to the technical field of wastewater treatment; the method aims to solve the problems of low atom contact rate and low contact specific surface area of the traditional Fenton reaction; the technical scheme includes that the device comprises an acid regulating device, a high-voltage static electricity generating device, a catalytic oxidation reaction device and a stabilizing pool which are sequentially communicated, wherein multiple layers of catalyst fillers are sequentially arranged in the catalytic oxidation reaction device, metering pumps are arranged at one ends of an acid liquor storage tank, a catalyst storage tank and an oxidant storage tank, after the high-voltage static electricity generating device treats a Fenton reaction water body, the polarity of water molecules is enhanced, the potential of the water body is increased, and large water molecule groups are crushed; the technical effect does, the utility model discloses a fenton reaction is more abundant, more complete, more thoroughly infinitely close theoretical value to reach and both produced sufficient hydroxyl free radical, make and the by-product minimizing again, reduced secondary pollution, the cost is reduced has improved economic benefits.
Description
Technical Field
The utility model belongs to the technical field of waste water treatment, specifically be a reinforce fenton oxidation method effluent treatment plant.
Background
The Fenton (Fenton) method is a high-grade oxidation technology, gradually becomes a first-choice method for treating refractory organic matters, is widely applied to the field of sewage treatment, and can effectively treat refractory pollutants in sewage and improve effluent indexes. And China officially promulgated and implemented Fenton oxidation method wastewater treatment engineering specifications (HJ 1095-2020) in 1 month and 14 days in 2020, Fenton oxidation is carried out, the basic principle is that hydroxyl radicals (. OH) with strong oxidizing property are generated through chemical reaction to oxidize and decompose organic pollutants, the hydroxyl radicals (. OH) can simultaneously oxidize various organic matters, and the Fenton oxidation method wastewater treatment engineering specifications have the characteristics of strong degradation capability, low selectivity, high reaction rate, simple infrastructure and operation, no toxicity of reagents, easy control, small investment and the like, but because of the flocculation characteristic of the traditional Fenton reaction and the problems of the self purity, water inlet turbidity and the like of a catalyst (ferrous sulfate solution) and an oxidant (H2O 2), the atomic contact rate and the contact specific surface area of the chemical reaction are greatly reduced, so that the whole operation cost of the process is high, the utilization rate of hydrogen peroxide is low, the yield of the iron-containing sludge is high, and the Fenton oxidation method is implemented, And cause secondary pollution scheduling problem, based on the defect that traditional Fenton reaction exists, it is necessary to develop a Fenton processing apparatus that can solve above-mentioned problem to satisfy the engineering demand.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes prior art's is not enough, provides a reinforce fenton oxidation method effluent treatment plant, and the purpose is solved traditional fenton reaction atom contact rate and the problem that the contact ratio surface is low.
In order to achieve the above purpose, the present invention is achieved by the following technical solutions.
A reinforced Fenton oxidation wastewater treatment device, which comprises an acid regulating device, a catalytic oxidation reaction device and a stabilization tank which are sequentially communicated, and also comprises a high-voltage electrostatic generating device, one end of the high-voltage static electricity generating device is communicated with the acid regulating device, the other end of the high-voltage static electricity generating device is communicated with the catalytic oxidation reaction device, a plurality of layers of catalyst fillers are sequentially arranged in the catalytic oxidation reaction device, one end of the acid adjusting device far away from the high-voltage static electricity generating device is communicated with an acid liquor storage tank, a metering pump is arranged between the acid adjusting device and the acid liquor storage tank, the high-voltage electrostatic generating device is communicated with a catalyst storage tank and an oxidant storage tank, a metering pump is arranged between the high-voltage static electricity generating device and the catalyst storage tank, and a metering pump is arranged between the high-voltage static electricity generating device and the oxidant storage tank; the high-voltage electrostatic generator comprises a high-voltage direct-current power supply and a high-voltage electrostatic reactor, wherein the voltage provided by the high-voltage direct-current power supply is 25000 plus 35000V, the high-voltage electrostatic reactor is made of steel or concrete, the high-voltage electrostatic reactor comprises a reactor shell and a base for supporting the shell, the base is grounded, high-voltage electrode rods are uniformly distributed in the reactor shell in an annular mode around the axis of the reactor shell, the high-voltage electrode rods are parallel to the axis of the reactor shell, the high-voltage electrode rods are fixedly connected with the reactor shell through a fixing frame, the high-voltage electrode rods are connected with the positive electrode of the high-voltage direct-current power supply through a lead, a water inlet and a water outlet are formed in the reactor shell, a catalyst inlet and an oxidant inlet are formed in the high-voltage electrostatic generator, and the catalyst inlet, the high-voltage electrostatic reactor and the high-voltage electrostatic reactor are connected with each other through leads, The oxidant inlets are all vertical to the water inlet.
Further, a porous partition plate and an aeration pipe are arranged in the acid regulating device from top to bottom, and the aeration pipe is arranged below the porous partition plate.
Further, the catalyst packing is provided with at least two layers.
Furthermore, the acid regulating device and the catalytic oxidation reaction device are both cylindrical shells, the bottoms of the acid regulating device and the catalytic oxidation reaction device are sealed, and the tops of the acid regulating device and the catalytic oxidation reaction device are communicated with the stabilization tank through pipelines.
Furthermore, a porous partition plate and an aeration pipe are sequentially arranged below the catalyst filler, and one end of the aeration pipe is provided with a blower.
Further, the catalyst filler is an iron-carbon catalyst filler and a heterogeneous catalyst filler.
Further, the purity of the catalyst filler is more than 90%.
Further, the stabilizing pool is communicated with an alkali liquor storage tank.
Further, the water inlet is arranged at the top of the reactor shell, and the catalyst inlet and the oxidant inlet are arranged at the side of the reactor shell.
Further, the catalyst is ferrous sulfate solution, the oxidant is hydrogen peroxide, and the acid solution is sulfuric acid.
The utility model discloses produced beneficial effect for prior art does:
the high-voltage static electricity generating device is arranged to treat the water body of the Fenton reaction, so that water molecules with polarity are in more orderly and sufficient contact with various anions and cations in the water body, the reaction chance and time are greatly increased, the Fenton reaction is more sufficient, complete and thorough and infinitely close to a theoretical value, enough hydroxyl radicals can be generated, and the minimization of byproducts can be ensured; the directions of the ferrous sulfate solution and the hydrogen peroxide added into the high-voltage electrostatic generator are both vertical to the direction of water flow, so that the ferrous sulfate solution and the hydrogen peroxide are fully contacted with the high-voltage electrostatic treated water, and the reaction efficiency is improved;
the precision of the added catalyst and oxidant is improved by arranging the metering pump, and the disadvantage of insufficient oxidation reaction caused by insufficient reaction catalyst due to impure purity of the pre-catalyst, metering error and fluctuation change of raw water organic matters is overcome by sequentially arranging the catalyst filler with the purity of more than 90% in the catalytic oxidation reaction device, so that the precision rate of various medicaments is effectively improved, the waste of the medicaments due to excessive addition is greatly reduced, the generation of hydroxyl radicals and the efficiency of ring opening, chain breaking and decomposition of the organic matters in the wastewater are ensured, the overall design requirement of the process is met, meanwhile, the generation of sludge is greatly reduced, the sludge reduction amount is reduced by 1/4-1/3 compared with the traditional Fenton reaction, and the secondary pollution is greatly reduced;
by arranging the catalyst filler, the catalyst filler can release ions thereof and simultaneously generate a trace amount of ozone due to the potential difference without the formation of current in the high-voltage electrostatic water body, thereby improving the oxidation performance of the device;
because the polarity of water molecules in the water body after high-voltage electrostatic treatment is enhanced, the whole water body has super strong adsorption capacity to particles with electric charges in the surrounding environment no matter what state, so that the water body has the functions of flocculation and adsorption capacity, the flocculation and precipitation effect is greatly increased, the dosage of a flocculating agent in a stabilization tank is reduced, the cost is reduced, and the economic benefit is improved.
Drawings
The present invention will be further explained with reference to the accompanying drawings;
FIG. 1 is a schematic view of the reinforced Fenton treatment apparatus of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
the device comprises a base, a reactor shell, a wire mesh mist catcher, a metering pump, catalyst packing, a porous partition plate, an aerator pipe, a catalyst storage tank, an oxidant inlet and a catalyst inlet, wherein the acid adjusting device is 1, the high-voltage static electricity generating device is 2, the catalytic oxidation reaction device is 3, the stabilizing tank is 4, the sulfuric acid storage tank is 5, the high-voltage direct-current power supply is 6, the high-voltage electrode rod is 7, the base is 8, the water inlet is 9, the water outlet is 10, the reactor shell is 11, the wire mesh mist catcher is 12, the alkali liquor storage tank is 13, the metering pump is 14, the catalyst packing is 15, the porous partition plate is 16, the aerator pipe is 17, the catalyst storage tank is 18, the oxidant storage tank is 19, the oxidant inlet is 20, and the catalyst inlet is 21.
Detailed Description
In order to make the technical problem, technical scheme and beneficial effect that the utility model will solve more clearly understand, combine embodiment and attached drawing, it is right to go on further detailed description the utility model discloses. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The technical solution of the present invention is described in detail below with reference to the embodiments and the drawings, but the scope of protection is not limited thereto.
The basic principle of the fenton reaction is as follows: the essence of the Fenton reaction is that under the condition that the pH value of the wastewater is 3-4, the decomposition activation energy of H2O2 is low (39.4 kJ/mol) under the catalysis of Fe2+, and a continuous chain reaction can be carried out to catalyze and generate hydroxyl radicals (.OH).
As shown in fig. 1, the reinforced fenton treatment device of the present invention comprises an acid adjusting device 1, a high voltage static electricity generating device 2, a catalytic oxidation reaction device 3 and a stabilization tank 4 which are sequentially connected from right to left, wherein the acid adjusting device 1, the high voltage static electricity generating device 2 and the catalytic oxidation reaction device 3 are cylindrical shells.
The base 8 is arranged below the acid adjusting device 1, the bottom of the acid adjusting device 1 is sealed, the top is communicated with the stabilization tank 4 through a pipeline, the right end of the acid adjusting device 1 is communicated with the sulfuric acid storage tank 5, a metering pump 14 is arranged between the acid adjusting device 1 and the sulfuric acid storage tank 5, the lower side of the acid adjusting device 1 is provided with a water inlet, the upper side of the acid adjusting device 1 is provided with a water outlet, the water inlet of the acid adjusting device 1 is provided with a water distributor, the water outlet is provided with a water collecting tank, three porous partition plates 16 are transversely arranged in the acid adjusting device 1, an aeration pipe 17 is arranged below each porous partition plate 16 in parallel, one end of each aeration pipe 17 is connected with an air blower, a wire mesh mist catcher 12 is arranged on the inner upper side of the acid adjusting device 1 to realize gas-liquid phase separation, and acid liquid is sulfuric acid.
A base 8 is arranged below the catalytic oxidation reaction device 3, the bottom of the catalytic oxidation reaction device 3 is sealed, the top is communicated with a stabilization tank 4 through a pipeline, a water inlet is arranged at the lower side of the catalytic oxidation reaction device 3, a water outlet is arranged at the upper side of the catalytic oxidation reaction device 3, a water distributor is arranged at the water inlet 9 of the catalytic oxidation reaction device 3, a water collecting tank is arranged at the water outlet, two layers of catalyst fillers 15 are sequentially arranged in the catalytic oxidation reaction device 3 from top to bottom, a porous partition plate 16 is arranged below the catalyst fillers 15, aeration pipes 17 are arranged below the porous partition plate 16 in parallel, one end of each aeration pipe 17 is connected with a blower, the catalyst fillers 15 are iron-carbon catalyst fillers 15 and heterogeneous catalyst fillers 15, the purity of the catalyst fillers 15 is more than 90 percent, a wire mesh mist catcher 12 is arranged at the upper side inside the catalytic oxidation reaction device 3 to realize gas-liquid phase separation, the stabilization tank 4 is communicated with an alkali liquor storage tank 13.
As shown in fig. 2, which is a partial enlarged view of a direction a of fig. 1, and is also a high-voltage electrostatic generator 2, comprising a high-voltage direct-current power supply 6 and a high-voltage electrostatic reactor, wherein the voltage provided by the high-voltage direct-current power supply 6 is 30000 v, the high-voltage electrostatic reactor is made of steel, the high-voltage electrostatic reactor comprises a reactor shell 11 and a base 8 for supporting the reactor shell, the base 8 is grounded, the reactor shell 11 is a vertically-placed closed tank, the height of the tank is 4m, the diameter of the tank is 1.2m, six vertical high-voltage electrode rods 7 are annularly and uniformly distributed in the reactor shell 11 around the axis of the reactor shell 11, the upper end and the lower end of each high-voltage electrode rod 7 are fixedly connected with the reactor shell 11 through a fixing frame, the upper end of each high-voltage electrode rod 7 is connected with the positive pole of the high-voltage direct-current power supply 66 through a lead, the left side of the reactor shell 11 is provided with a water outlet 10 and an oxidant inlet 20, the right side is provided with a catalyst inlet 21, the top is provided with a water inlet 9, therefore, the direction of the catalyst and the oxidant added into the high-voltage static electricity generating device 2 is perpendicular to the water flow direction, so that the catalyst and the oxidant are in contact with the water flow more fully, the reaction efficiency is improved, the high-voltage static electricity generating device 2 is provided with a catalyst storage tank 18 through the catalyst inlet 21, an oxidant storage tank 19 is provided through the oxidant inlet 20, a metering pump 14 is arranged between the high-voltage static electricity generating device 2 and the catalyst storage tank 18, a metering pump 14 is arranged between the high-voltage static electricity generating device 2 and the oxidant storage tank 19, the catalyst is ferrous sulfate solution, and the oxidant is hydrogen peroxide.
The water treated by the high voltage electrostatic generator 2 has the following characteristics:
1. the electric potential of hydrone obtains improving, and similar positive pole sacrificial method, positive pole sacrificial method utilize the electric current to reach partial purpose, nevertheless the utility model discloses do not have the electric current under the effect of high-voltage electrostatic field between water and the equipment, but have the trend that the electron shifts, produce trace ozone in aqueous, ozone has the oxidation tectorial membrane effect to exposed pipeline to effectively prevented the corruption of water to steel equipment and steel pipeline.
3. The polarity of water molecules in the water body is enhanced, and the whole water body has super strong adsorption capacity to particles with electric charges in the surrounding environment no matter what state, so that the water body has the functions of flocculation and adsorption capacity.
4. The electric field intensity is high, so that the water molecules can be maintained for a longer time which can reach 45-50 minutes, and the service time of subsequent water-using equipment is fully met.
5. The large water molecule groups are crushed, so that the water molecules with enhanced polarity are in more orderly and sufficient contact with various anions and cations in the water body, and the Fenton reaction opportunity and time are greatly increased.
6. The potential of the water molecule is increased, and the chain reaction is enhanced.
The utility model discloses under the condition that does not change the fenton reaction principle, build a water environment that is more suitable for the fenton reaction, the accurate volume of throwing catalyst and oxidant of rethread makes its reaction more abundant, more complete, more thoroughly infinitely close theoretical value to reach the hydroxyl free radical that had both produced sufficient volume, make again and the purpose of byproduct minimizing.
The specific working process is that,
s1, adjusting the pH value: the wastewater enters an acid regulating device 1, and H2SO4 is added to be fully mixed, SO that the pH value of the wastewater reaches 3-4;
s2, high-voltage static cross-flow catalytic mixing reaction: the wastewater treated in the step 1 enters a high-voltage static generating device 2, and a ferrous sulfate solution and hydrogen peroxide are added, wherein the adding directions of the ferrous sulfate solution and the hydrogen peroxide are both vertical to the direction of water flow, the whole water body potential of the mixed liquid in the high-voltage static generating device 2 is increased, and the polarity of H2O is enhanced;
s3, oxidation reaction: the wastewater treated in the step 2 enters a catalytic oxidation reaction device 3 to carry out Fenton catalytic oxidation reaction;
s4, neutralization reaction: the wastewater treated in the step 3 enters a stabilization tank 4, NaOH is added for neutralization reaction, the PH is adjusted to be neutral, and the effluent water meets the requirements of the subsequent process through defoaming, degassing, plus-minus neutralization and potential reduction in the stabilization tank 4;
s5: flocculation reaction: and (4) enabling the treated wastewater in the step (4) to enter a stabilization tank (4), adding a flocculating agent to flocculate iron mud in the wastewater, wherein the flocculating agent is PAC and PAM.
The above description is for further details of the present invention with reference to specific preferred embodiments, and it should not be understood that the embodiments of the present invention are limited thereto, and it will be apparent to those skilled in the art that the present invention can be implemented in a plurality of simple deductions or substitutions without departing from the scope of the present invention, and all such alterations and substitutions should be considered as belonging to the present invention, which is defined by the appended claims.
Claims (10)
1. A reinforced Fenton oxidation wastewater treatment device, which comprises an acid regulating device, a catalytic oxidation reaction device and a stabilization tank which are communicated in sequence, it is characterized by also comprising a high-voltage static electricity generating device, wherein one end of the high-voltage static electricity generating device is communicated with the acid regulating device, the other end of the high-voltage static electricity generating device is communicated with the catalytic oxidation reaction device, a plurality of layers of catalyst fillers are sequentially arranged in the catalytic oxidation reaction device, one end of the acid adjusting device far away from the high-voltage static electricity generating device is communicated with an acid liquor storage tank, a metering pump is arranged between the acid adjusting device and the acid liquor storage tank, the high-voltage electrostatic generating device is communicated with a catalyst storage tank and an oxidant storage tank, a metering pump is arranged between the high-voltage static electricity generating device and the catalyst storage tank, and a metering pump is arranged between the high-voltage static electricity generating device and the oxidant storage tank;
the high-voltage static electricity generating device comprises a high-voltage direct current power supply and a high-voltage static electricity reactor, wherein the voltage provided by the high-voltage direct current power supply is 25000-35000 volts, the high-voltage electrostatic reactor is made of steel or concrete, the high-voltage electrostatic reactor comprises a reactor shell and a base for supporting the shell, the base is grounded, high-voltage electrode bars are uniformly distributed in the reactor shell in a ring shape around the axis of the reactor shell, the high-voltage electrode bar is parallel to the axis of the reactor shell and is fixedly connected with the reactor shell through a fixing frame, the high-voltage electrode bar is connected with the positive electrode of the high-voltage direct-current power supply through a lead, a water inlet, a water outlet, a catalyst inlet and an oxidant inlet are formed in the reactor shell, and the catalyst inlet and the oxidant inlet are perpendicular to the water inlet.
2. The enhanced Fenton's oxidation wastewater treatment device according to claim 1, wherein a porous partition and an aeration pipe are arranged in the acid adjusting device from top to bottom, and the aeration pipe is arranged below the porous partition.
3. The apparatus for enhanced Fenton's oxidation wastewater treatment according to claim 1, wherein the catalyst packing is provided with at least two layers.
4. The reinforced Fenton's oxidation wastewater treatment device of claim 1, wherein the acid adjusting device and the catalytic oxidation reaction device are cylindrical shells, the bottom parts of the shell are sealed, and the top parts of the shell are communicated with the stabilization tank through pipelines.
5. The apparatus for treating wastewater by enhanced Fenton's oxidation according to claim 1, wherein a porous partition and an aeration pipe are sequentially arranged below the catalyst packing, and an air blower is arranged at one end of the aeration pipe.
6. The apparatus of claim 1, wherein the catalyst packing is an iron-carbon catalyst packing or a heterogeneous catalyst packing.
7. The apparatus according to claim 1, wherein the catalyst packing has a purity of 90% or more.
8. The apparatus of claim 1, wherein the stabilization tank is in communication with a lye storage tank.
9. The apparatus of claim 1, wherein the water inlet is disposed at a top of the reactor housing, and the catalyst inlet and the oxidant inlet are disposed at sides of the reactor housing.
10. The device for treating wastewater by using the enhanced Fenton oxidation method according to claim 1, wherein the catalyst is ferrous sulfate solution, the oxidant is hydrogen peroxide, and the acid solution is sulfuric acid.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114684991A (en) * | 2020-12-31 | 2022-07-01 | 山西远航环境科技股份有限公司 | Reinforced Fenton oxidation method wastewater treatment device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114684991A (en) * | 2020-12-31 | 2022-07-01 | 山西远航环境科技股份有限公司 | Reinforced Fenton oxidation method wastewater treatment device |
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