CN211255555U - Landfill leachate reverse osmosis concentrated water oxidation system - Google Patents
Landfill leachate reverse osmosis concentrated water oxidation system Download PDFInfo
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- CN211255555U CN211255555U CN201922244548.1U CN201922244548U CN211255555U CN 211255555 U CN211255555 U CN 211255555U CN 201922244548 U CN201922244548 U CN 201922244548U CN 211255555 U CN211255555 U CN 211255555U
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Abstract
The utility model discloses a landfill leachate reverse osmosis concentrated water oxidation system, including inlet tube, intake pump, electro-fenton device, flocculation and precipitation device, outlet pipe, electro-fenton device includes reaction vessel, aeration equipment, circulating device, electrolytic device includes power, electrolysis mechanism installs at reaction vessel's middle part to separate reaction vessel into upper portion appearance chamber, lower part appearance chamber, electrolysis mechanism includes electrolysis positive pole, electrolysis negative pole and sets up the filler between electrolysis positive pole and electrolysis negative pole, the inlet tube passes through the intake pump and communicates with lower part appearance chamber; the aeration mechanism of the aeration device is arranged at the bottom of the reaction container, the circulating device comprises a circulating pump, and the lower cavity is communicated with the upper end of the electrolysis mechanism through the circulating pump; the upper end of the upper cavity is communicated with the water outlet pipe through a flocculation precipitation device. The system further improves the treatment effect of Fenton and reduces the operation cost by combining electrochemistry with a Fenton advanced oxidation technology.
Description
Technical Field
The utility model relates to a sewage treatment technical field especially relates to a landfill leachate reverse osmosis dense water oxidation system.
Background
At present, domestic landfill leachate treatment plants basically adopt a 'biochemical and membrane method' process to treat landfill leachate. Although the method can obtain treated effluent reaching the standard, reverse osmosis concentrated water with a certain proportion is generated at the same time. The reverse osmosis concentrated water of the landfill leachate contains high-concentration non-biodegradable organic matters, has high salinity and high chroma, and is wastewater with extremely poor biodegradability. For reverse osmosis concentrated water, most percolate plants adopt a recharge mode to treat the reverse osmosis concentrated water. The treatment mode can not generate great influence on the operation effect of the whole percolate treatment system in a short time, but can cause the accumulation and the rise of non-biodegradable organic matters and salinity in the percolate after long-term operation, thereby further causing the operation effect of the biochemical treatment process at the front section of the percolate treatment system to be deteriorated and even collapsed, subsequently reducing the treatment capacity of the treatment system and promoting the operation cost. Along with the promotion of domestic leachate discharge standards and the increase of supervision of environmental protection departments, the recharging treatment of leachate concentrated water causes the large increase of pollutants and emission reduction pressure of most domestic leachate treatment plants. Therefore, how to economically and reasonably treat reverse osmosis concentrated water and avoid the recharging of the concentrated water is an urgent technical problem to be solved in the garbage leachate treatment technology.
At present, a great number of leachate reverse osmosis concentrated water advanced oxidation technologies are reported as Fenton technologies, however, due to the pollutant characteristics of concentrated water, more chemical agents (such as H2O2, ferrous sulfate and the like) are generally required to be added in the Fenton reaction process, so that a great amount of iron mud is generated subsequently, the treatment cost is high, and the treatment capacity is limited.
Disclosure of Invention
An object of the utility model is to the above-mentioned problem, provide a landfill leachate reverse osmosis dense water oxidation system, this system combines fenton advanced oxidation technology with the electrochemistry, further promotes fenton's treatment effect and reduces the running cost.
The technical scheme is as follows:
a landfill leachate reverse osmosis concentrated water oxidation system comprises a water inlet pipe, a water inlet pump, an electro-Fenton device, a flocculation and precipitation device and a water outlet pipe, wherein the electro-Fenton device comprises a reaction container, an aeration device, a circulating device and an electrolysis device, the electrolysis device comprises a power supply and an electrolysis mechanism, the electrolysis mechanism is installed in the middle of the reaction container and divides the reaction container into an upper containing cavity and a lower containing cavity, the electrolysis mechanism comprises an electrolysis positive electrode, an electrolysis negative electrode and a filler arranged between the electrolysis positive electrode and the electrolysis negative electrode, the filler is iron oxide red powder, the power supply is arranged outside the reaction container, and a positive output end and a negative output end of the power supply are respectively and electrically connected with the electrolysis positive electrode and the electrolysis negative electrode; the water inlet pipe is communicated with the lower cavity through the water inlet pump; the aeration device comprises an air blower, an electric air valve and an aeration mechanism, the aeration mechanism is arranged at the bottom of the reaction container, and the aeration mechanism is communicated with the air blower through the electric air valve; the circulating device comprises a circulating pump, and the lower containing cavity is communicated with the upper end of the electrolysis mechanism through the circulating pump; the flocculation and precipitation device comprises a precipitation container, a precipitation water inlet and a precipitation water outlet are formed in the upper end of the precipitation container, the water inlet level of the precipitation water inlet is higher than the water outlet level of the precipitation water outlet, the upper end of the upper part accommodating cavity is communicated with the precipitation water inlet of the precipitation accommodating cavity, and the water outlet pipe is communicated with the precipitation water outlet of the precipitation accommodating cavity.
The electrolytic anode and the electrolytic cathode are respectively provided with a plurality of electrolytic anodes and a plurality of electrolytic cathodes, the plurality of electrolytic anodes are connected in parallel, and the plurality of electrolytic cathodes are connected in parallel.
The plurality of electrolysis positive electrodes and the plurality of electrolysis negative electrodes are alternately and oppositely arranged.
The flocculation and precipitation device further comprises a sludge discharge pump, a sludge discharge port is formed in the lower end of the precipitation container, and an inlet of the sludge discharge pump is communicated with the sludge discharge port.
The flocculation and precipitation device further comprises a sewage discharge valve, and the inlet of the sludge discharge pump is communicated with the sludge discharge port through the sewage discharge valve.
The flocculation and precipitation device further comprises a precipitation water inlet valve and a precipitation water outlet valve, the precipitation water inlet is communicated with the upper end of the upper cavity through the precipitation water inlet valve, and the precipitation water outlet is communicated with the water outlet pipe through the precipitation water outlet valve.
The aeration mechanism comprises a plurality of microporous aerators which are uniformly distributed at the bottom of the lower cavity of the reaction container and are respectively communicated with the blower through the electric air valve.
The circulating device further comprises a circulating water inlet valve and a circulating water outlet valve, a water inlet of the circulating pump is communicated with the lower cavity of the reaction container through the circulating water inlet valve, and a water outlet of the circulating pump is communicated with the upper end of the electrolysis mechanism through the circulating water outlet valve.
It should be noted that:
in the description of the present invention, it should be understood that the terms "upper" and "lower" are used as the terms of the orientation or the positional relationship based on the drawings, or the orientation or the positional relationship that the product of the present invention is usually placed when using, or the orientation or the positional relationship that the person skilled in the art usually understands, only for the convenience of describing the present invention and simplifying the description, but not for the indication or the suggestion that the device or the element that is referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore, should not be interpreted as the limitation of the present invention.
The advantages or principles of the invention are explained below:
1. the utility model provides a landfill leachate reverse osmosis concentrated water oxidation system, including the inlet tube, the intake pump, the electro-Fenton device, the flocculation and precipitation device, the outlet pipe, during the use, pass through the intake pump with the landfill leachate reverse osmosis concentrated water of pending, the lower part appearance chamber in the circulation pipeline of pump-in electro-Fenton device, simultaneously replenish hydrogen peroxide solution and sulphuric acid in the water pump export of intake pump, replenish hydrogen peroxide solution in the water pump export of intake pump, can make it fully mix with landfill leachate reverse osmosis concentrated water, thereby the dispersity of hydrogen peroxide solution has been improved, the homogeneity of organic matter degradation is improved; maintaining the pH value of the reaction system to be 3-5; pumping the water solution with the iron oxide red carrier at the upper end of the lower cavity into a circulating pipeline by a circulating pump for backflow, then enabling the wastewater to enter a flocculation precipitation device, adjusting the pH value by adding alkali and PAM, and then precipitating and removing floc to obtain purified water; the wet-process iron oxide red is used as a carrier for heterogeneous catalytic oxidation, an electrolysis region can ionize to generate iron ions required by Fenton reaction, ferrous sulfate is not required to be added, and the iron oxide red has small particles, so that a huge specific surface area can be provided in an iron oxide red electro-Fenton fluidized bed system, an iron hydroxyl compound can be formed with the reaction system more easily, and the iron oxide red electro-Fenton fluidized bed system has a catalytic oxidation effect, so that the pH value of the electro-Fenton reaction is widened, the use amount of a medicament is reduced, the yield of sludge containing iron oxide in the subsequent treatment process is reduced, and the treatment cost of chemical oxidation is reduced; this landfill leachate reverse osmosis dense water oxidation system further promotes the treatment effect of fenton and reduces the running cost with electrochemistry in combination with the fenton advanced oxidation technique.
2. The electrolytic anode and the electrolytic cathode of the utility model are respectively a plurality of, so that the ionization of the ferric oxide is more sufficient.
3. The utility model discloses an it just sets up relatively in turn between a plurality of electrolysis anodals and a plurality of electrolysis negative poles, improves the ionization efficiency of ferric oxide.
4. The utility model discloses a flocculation and precipitation device still includes the dredge pump, and the setting of dredge pump is conveniently arranged the mud thickener with the mud of deposit in the sedimentation vessel bottom.
5. The utility model discloses a flocculation and precipitation device is still including the valve of discharging sewage, and the setting of the valve of discharging sewage is conveniently in the discharge control to sedimentation vessel bottom mud.
6. The utility model discloses a flocculation and precipitation device is still including deposiing water intaking valve, sediment outlet valve, and the setting of deposiing water intaking valve, sediment outlet valve is convenient to the sewage that advances the sedimentation container and the water purification control of outflow sedimentation container.
7. The utility model discloses an aeration mechanism includes a plurality of micropore aerators, and a plurality of micropore aerators realize the even aeration that the reaction vessel lower part holds the chamber, and each micropore aerator carries out intermittent type nature aeration through the aeration pipe, gets rid of the precipitate on iron plate surface, solves iron plate passivation problem effectively.
8. The utility model discloses a circulating device still includes circulation water intaking valve, circulation outlet valve, and the setting of circulation water intaking valve, circulation outlet valve is convenient to the control of circulating line rivers.
Drawings
Fig. 1 is the utility model discloses landfill leachate reverse osmosis dense water oxidation system constitutes the schematic diagram.
Description of reference numerals:
10. the device comprises a water inlet pipe, 20, a water inlet pump, 30, an electro-Fenton device, 31, a reaction container, 311, an upper cavity, 312, a lower cavity, 321, a blower, 322, an electric air valve, 323, an aeration mechanism, 3231, a microporous aerator, 331, a circulating pump, 332, a circulating water inlet valve, 333, a circulating water outlet valve, 341, a power supply, 3421, an electrolysis anode, 3422, an electrolysis cathode, 3423, a filler, 40, a flocculation precipitation device, 41, a precipitation container, 411, a precipitation water inlet, 412, a precipitation water outlet, 413, a sludge outlet, 42, a sludge pump, 43, a sewage valve, 44, a precipitation water inlet valve, 45, a precipitation water outlet valve, 50 and a water outlet pipe.
Detailed Description
The following describes embodiments of the present invention in detail.
Referring to fig. 1, the utility model provides a landfill leachate reverse osmosis concentrated water oxidation system, including inlet tube 10, intake pump 20, electro-fenton device 30, flocculation and precipitation device 40, outlet pipe 50, electro-fenton device 30 includes reaction vessel 31, aeration equipment, circulating device, electrolytic device includes power 341, electrolysis mechanism installs in the middle part of reaction vessel 31, and separate reaction vessel 31 into upper portion appearance chamber 311, lower part appearance chamber 312, electrolysis mechanism includes electrolysis positive 3421, electrolysis negative 3422 and set up the filler 3423 between electrolysis positive 3421 and electrolysis negative 3422, filler 3423 is iron oxide red powder, power 341 is established outside reaction vessel 31, the positive output of power 341, the negative output respectively with electrolysis positive 3421, electrolysis negative 3422 electric connection; the water inlet pipe 10 is communicated with the lower containing cavity 312 through the water inlet pump 20; the aeration device comprises a blower 321, an electric air valve 322 and an aeration mechanism 323, wherein the aeration mechanism 323 is arranged at the bottom of the reaction vessel 31, and the aeration mechanism 323 is communicated with the blower 321 through the electric air valve 322; the circulating device comprises a circulating pump 331, and the lower accommodating cavity 312 is communicated with the upper end of the electrolysis mechanism through the circulating pump 331; the flocculation and precipitation device 40 comprises a precipitation container 41, a precipitation water inlet 411 and a precipitation water outlet 412 are arranged at the upper end of the precipitation container 41, the water inlet level of the precipitation water inlet 411 is higher than the water outlet level of the precipitation water outlet 412, the upper end of the upper chamber 311 is communicated with the precipitation water inlet 411 of the precipitation chamber, and the water outlet pipe 50 is communicated with the precipitation water outlet 412 of the precipitation chamber.
When the device is used, the landfill leachate reverse osmosis concentrated water to be treated is pumped into the lower cavity 312 in the circulating pipeline of the electro-Fenton device 30 through the water inlet pump 20, hydrogen peroxide and sulfuric acid are supplemented at the water pump outlet of the water inlet pump 20, and hydrogen peroxide is supplemented at the water pump outlet of the water inlet pump 20, so that the hydrogen peroxide and the landfill leachate reverse osmosis concentrated water can be fully mixed, the dispersion degree of the hydrogen peroxide is improved, and the degradation uniformity of organic matters is improved; maintaining the pH value of the reaction system to be 3-5; the water solution with the iron oxide red carrier at the upper end of the lower chamber 312 is pumped into a circulating pipeline by a circulating pump 331 for backflow, then the wastewater enters a flocculation precipitation device 40, the pH value is adjusted by adding alkali and PAM, and purified water is obtained by precipitation and deflocculation; the wet-process iron oxide red is used as a carrier for heterogeneous catalytic oxidation, an electrolysis region can ionize to generate iron ions required by Fenton reaction, ferrous sulfate is not required to be added, and the iron oxide red has small particles, so that a huge specific surface area can be provided in an iron oxide red electro-Fenton fluidized bed system, an iron hydroxyl compound can be formed with the reaction system more easily, and the iron oxide red electro-Fenton fluidized bed system has a catalytic oxidation effect, so that the pH value of the electro-Fenton reaction is widened, the use amount of a medicament is reduced, the yield of sludge containing iron oxide in the subsequent treatment process is reduced, and the treatment cost of chemical oxidation is reduced; this landfill leachate reverse osmosis dense water oxidation system further promotes the treatment effect of fenton and reduces the running cost with electrochemistry in combination with the fenton advanced oxidation technique.
The number of the electrolytic positive electrodes 3421 and the number of the electrolytic negative electrodes 3422 are plural, the plural electrolytic positive electrodes 3421 are connected in parallel to each other, and the plural electrolytic negative electrodes 3422 are connected in parallel to each other. The ionization of the ferric oxide is more sufficient.
The plurality of electrolysis positive electrodes 3421 and the plurality of electrolysis negative electrodes 3422 are alternately and oppositely disposed. The ionization efficiency of the iron oxide is improved.
The flocculation device 40 further comprises a sludge discharge pump 42, a sewage discharge valve 43, a sedimentation water inlet valve 44 and a sedimentation water outlet valve 45, wherein the lower end of the sedimentation container 41 is provided with a sludge discharge port 413, and the inlet of the sludge discharge pump 42 is communicated with the sludge discharge port 413. The sludge pump 42 is provided to facilitate the discharge of the sludge deposited at the bottom of the settling vessel 41 to the sludge thickener.
The inlet of the sludge pump 42 communicates with the sludge discharge port 413 through the sewage discharge valve 43. The arrangement of the sewage discharge valve 43 facilitates the discharge control of the sludge at the bottom of the sedimentation container 41.
The sediment inlet 411 is communicated with the upper end of the upper chamber 311 through a sediment inlet valve 44, and the sediment outlet 412 is communicated with the outlet pipe 50 through a sediment outlet valve 45. The arrangement of the sedimentation water inlet valve 44 and the sedimentation water outlet valve 45 facilitates the control of the flow of the sewage flowing into the sedimentation container 41 and the flow of the purified water flowing out of the sedimentation container 41.
The aeration mechanism 323 comprises a plurality of microporous aerators 3231, and the microporous aerators 3231 are uniformly distributed at the bottom of the lower cavity 312 of the reaction vessel 31 and are respectively communicated with the blower 321 through an electric air valve 322. The plurality of micro-porous aerators 3231 realize uniform aeration of the lower cavity 312 of the reaction vessel 31, and each micro-porous aerator 3231 performs intermittent aeration through an aeration pipe to remove precipitates on the surface of an iron plate, thereby effectively solving the problem of iron plate passivation.
The circulating device further comprises a circulating water inlet valve 332 and a circulating water outlet valve 333, a water inlet of the circulating pump 331 is communicated with the lower cavity 312 of the reaction container 31 through the circulating water inlet valve 332, and a water outlet of the circulating pump 331 is communicated with the upper end of the electrolysis mechanism through the circulating water outlet valve 333. The arrangement of the circulating water inlet valve 332 and the circulating water outlet valve 333 facilitates the control of the water flow of the circulating pipeline.
The above are only specific embodiments of the present invention, and the protection scope of the present invention is not limited thereby; any replacement and improvement made on the basis of not violating the conception of the utility model belong to the protection scope of the utility model.
Claims (8)
1. A landfill leachate reverse osmosis concentrated water oxidation system is characterized by comprising a water inlet pipe, a water inlet pump, an electro-Fenton device, a flocculation and precipitation device and a water outlet pipe, wherein the electro-Fenton device comprises a reaction container, an aeration device, a circulating device and an electrolysis device, the electrolysis device comprises a power supply and an electrolysis mechanism, the electrolysis mechanism is arranged in the middle of the reaction container and divides the reaction container into an upper containing cavity and a lower containing cavity, the electrolysis mechanism comprises an electrolysis positive electrode, an electrolysis negative electrode and a filler arranged between the electrolysis positive electrode and the electrolysis negative electrode, the filler is iron oxide red powder, the power supply is arranged outside the reaction container, and a positive output end and a negative output end of the power supply are respectively and electrically connected with the electrolysis positive electrode and the electrolysis negative electrode; the water inlet pipe is communicated with the lower cavity through the water inlet pump; the aeration device comprises an air blower, an electric air valve and an aeration mechanism, the aeration mechanism is arranged at the bottom of the reaction container, and the aeration mechanism is communicated with the air blower through the electric air valve; the circulating device comprises a circulating pump, and the lower containing cavity is communicated with the upper end of the electrolysis mechanism through the circulating pump; the flocculation and precipitation device comprises a precipitation container, a precipitation water inlet and a precipitation water outlet are formed in the upper end of the precipitation container, the water inlet level of the precipitation water inlet is higher than the water outlet level of the precipitation water outlet, the upper end of the upper part accommodating cavity is communicated with the precipitation water inlet of the precipitation accommodating cavity, and the water outlet pipe is communicated with the precipitation water outlet of the precipitation accommodating cavity.
2. The landfill leachate reverse osmosis concentrated water oxidation system of claim 1, wherein the number of the electrolysis anodes and the number of the electrolysis cathodes are respectively multiple, the electrolysis anodes are connected in parallel with each other, and the electrolysis cathodes are connected in parallel with each other.
3. The landfill leachate reverse osmosis concentrated water oxidation system of claim 2, wherein a plurality of the electrolysis anodes and a plurality of the electrolysis cathodes are alternately and oppositely disposed.
4. The landfill leachate reverse osmosis concentrated water oxidation system of any one of claims 1 to 3, wherein the flocculation and precipitation device further comprises a sludge discharge pump, a sludge discharge port is formed at the lower end of the precipitation container, and an inlet of the sludge discharge pump is communicated with the sludge discharge port.
5. The landfill leachate reverse osmosis concentrated water oxidation system of claim 4, wherein the flocculation device further comprises a sewage discharge valve, and an inlet of the sludge discharge pump is communicated with the sludge discharge port through the sewage discharge valve.
6. The landfill leachate reverse osmosis concentrated water oxidation system of claim 4, wherein the flocculation device further comprises a sedimentation water inlet valve and a sedimentation water outlet valve, the sedimentation water inlet is communicated with the upper end of the upper cavity through the sedimentation water inlet valve, and the sedimentation water outlet is communicated with the water outlet pipe through the sedimentation water outlet valve.
7. The landfill leachate reverse osmosis concentrated water oxidation system according to any one of claims 1 to 3, wherein the aeration mechanism comprises a plurality of microporous aerators which are uniformly distributed at the bottom of the lower chamber of the reaction vessel and are respectively communicated with the blower through the electric air valve.
8. The landfill leachate reverse osmosis concentrated water oxidation system of any one of claims 1 to 3, wherein the circulating device further comprises a circulating water inlet valve and a circulating water outlet valve, the water inlet of the circulating pump is communicated with the lower chamber of the reaction vessel through the circulating water inlet valve, and the water outlet of the circulating pump is communicated with the upper end of the electrolysis mechanism through the circulating water outlet valve.
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| CN201922244548.1U CN211255555U (en) | 2019-12-13 | 2019-12-13 | Landfill leachate reverse osmosis concentrated water oxidation system |
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| CN201922244548.1U CN211255555U (en) | 2019-12-13 | 2019-12-13 | Landfill leachate reverse osmosis concentrated water oxidation system |
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| CN211255555U true CN211255555U (en) | 2020-08-14 |
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| CN201922244548.1U Active CN211255555U (en) | 2019-12-13 | 2019-12-13 | Landfill leachate reverse osmosis concentrated water oxidation system |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A reverse osmosis concentrated water oxidation system for landfill leachate Effective date of registration: 20210903 Granted publication date: 20200814 Pledgee: Development Zone sub branch of Bank of Guangzhou Co.,Ltd. Pledgor: GUANGZHOU HUALU ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Registration number: Y2021980008836 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20221013 Granted publication date: 20200814 Pledgee: Development Zone sub branch of Bank of Guangzhou Co.,Ltd. Pledgor: GUANGZHOU HUALU ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Registration number: Y2021980008836 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |