CN212269782U - Landfill leachate treatment system - Google Patents
Landfill leachate treatment system Download PDFInfo
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- CN212269782U CN212269782U CN202020370118.4U CN202020370118U CN212269782U CN 212269782 U CN212269782 U CN 212269782U CN 202020370118 U CN202020370118 U CN 202020370118U CN 212269782 U CN212269782 U CN 212269782U
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- 239000000149 chemical water pollutant Substances 0.000 title claims abstract description 26
- 238000006243 chemical reaction Methods 0.000 claims abstract description 152
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 111
- 230000003647 oxidation Effects 0.000 claims abstract description 108
- 230000007246 mechanism Effects 0.000 claims abstract description 91
- 238000001179 sorption measurement Methods 0.000 claims abstract description 59
- 238000005189 flocculation Methods 0.000 claims abstract description 46
- 230000016615 flocculation Effects 0.000 claims abstract description 46
- 239000007788 liquid Substances 0.000 claims abstract description 25
- 230000003311 flocculating effect Effects 0.000 claims abstract description 5
- 238000012546 transfer Methods 0.000 claims description 26
- 239000012752 auxiliary agent Substances 0.000 claims description 23
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 17
- 239000012528 membrane Substances 0.000 claims description 11
- 238000005842 biochemical reaction Methods 0.000 claims description 8
- 239000003513 alkali Substances 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 230000029219 regulation of pH Effects 0.000 claims description 3
- 238000001914 filtration Methods 0.000 abstract description 7
- 238000009434 installation Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 12
- 239000000126 substance Substances 0.000 description 10
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 4
- 230000001590 oxidative effect Effects 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
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- 230000008901 benefit Effects 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
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- 239000010802 sludge Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
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- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
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- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
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- 238000009279 wet oxidation reaction Methods 0.000 description 1
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Abstract
The utility model relates to a landfill leachate treatment system belongs to refuse handling installation technical field. The utility model provides a filtration liquid of current refuse landfill cause secondary pollution's problem. The utility model comprises a flocculation treatment mechanism which is used for flocculating the percolate; the oxidation treatment mechanism is arranged at the rear end of the flocculation treatment mechanism and is connected with the flocculation treatment mechanism through a pipeline; the biochemical treatment mechanism is arranged at the rear end of the oxidation treatment mechanism and is connected with the oxidation treatment mechanism through a pipeline; and the deep oxidation adsorption reaction mechanism is arranged at the rear end of the biochemical treatment mechanism and is connected with the biochemical treatment mechanism through a pipeline.
Description
Technical Field
The utility model relates to a landfill leachate treatment system belongs to refuse treatment technical field.
Background
The disposal of landfill leachate has been a very difficult problem in landfill design, operation and management. Leachate is the product of the gravity flow of liquids in landfills and is primarily derived from precipitation and the inherent moisture content of the refuse itself. The properties of the percolate vary over a considerable range, since many factors in the flow of the liquid may influence the properties of the percolate, including physical, chemical and biological factors. Generally, the pH value is between 4 and 9, the COD is in the range of 2000 to 62000mg/L, the BOD5 is from 60 to 45000mg/L, and the concentration of heavy metals is basically consistent with that of heavy metals in municipal sewage. The leachate of the municipal refuse landfill is high-concentration organic wastewater with complex components, and if the leachate is directly discharged into the environment without treatment, serious environmental pollution is caused. For the purpose of protecting the environment, it is essential to treat the leachate.
The treatment method of the landfill leachate comprises a physical chemical method and a biological method. The physical and chemical methods mainly comprise various methods such as activated carbon adsorption, chemical precipitation, density separation, chemical oxidation, chemical reduction, ion exchange, membrane dialysis, gas stripping, wet oxidation and the like, and when the COD is 2000-4000 mg/L, the removal rate of the COD by the physical and chemical method can reach 50-87%. Compared with biological treatment, the physicochemical treatment is not influenced by the change of water quality and quantity, the effluent quality is more stable, especially to BOD5The landfill leachate which has a low COD ratio (0.07-0.20) and is difficult to biologically treat has a good treatment effect. But the physical and chemical method has higher treatment cost and is not suitable for treating the large-water-volume landfill leachate, so the landfill leachate mainly adopts a biological method.
Biological methods are divided into aerobic biological treatment, anaerobic biological treatment and a combination of the two. The aerobic treatment comprises an activated sludge process, an aeration oxidation tank, an aerobic stabilization pond, a biological rotating disk, a trickling filter and the like. The anaerobic treatment comprises an upflow sludge bed, an anaerobic immobilized bioreactor, a mixing reactor and an anaerobic stabilization pond. However, the biological method is only adopted, so that the treatment difficulty is high, the biochemical method requires that the percolate is the percolate of fresh garbage, and after the garbage is buried for too long time, BOD (biochemical oxygen demand) is generated5The ratio of/CODcr is sharply reduced, the concentration of ammonia nitrogen is increased, the biochemical toxicity of water is increased, the effect of biochemical treatment is poor (chemical oxygen demand COD can be compared with biochemical oxygen demand BOD, the ratio of BOD/COD reflects the biological degradation capability of sewage. the analysis of biochemical oxygen demand takes longer time, and the biological energy in water can be basically consumed by organisms for more than 20 daysTaking about 95 percent of consumed oxygen in five days as environmental monitoring data for convenience and convenience, and marking the data as BOD5)。
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome the above-mentioned defect that exists on the current landfill leachate handles, a landfill leachate treatment system is proposed, suspended particle through flocculation treatment mechanism in with filtration liquid gathers the grow, or form wadding thereby carry out preliminary treatment to it, then carry out oxidation treatment to filtration liquid through oxidation treatment mechanism, filtration liquid after carrying out the pretreatment is handled through the biochemical treatment mechanism in the biological method again, the degree of depth oxidation absorption in the chemical method is handled through the process after the processing is accomplished, it handles filtration liquid to have synthesized biological method and chemical method dual mode, make the mode of handling more scientific, the advantage of chemical method and biological method filtration liquid treatment has been combined, the treatment effect is better.
The utility model discloses an adopt following technical scheme to realize: a landfill leachate treatment system, comprising:
the flocculation treatment mechanism is used for flocculating the percolate;
the oxidation treatment mechanism is used for removing part of organic matters in the percolate after oxidation reaction;
the oxidation treatment mechanism is arranged at the rear end of the flocculation treatment mechanism and is connected with the flocculation treatment mechanism through a pipeline;
the biochemical treatment mechanism is arranged at the rear end of the oxidation treatment mechanism and is connected with the oxidation treatment mechanism through a pipeline;
the deep oxidation adsorption reaction mechanism is arranged at the rear end of the biochemical treatment mechanism and is connected with the biochemical treatment mechanism through a pipeline;
the front end of the flocculation treatment mechanism is provided with a leachate inlet pipe, the leachate inlet pipe is communicated with a flocculation reaction tank, the top of the flocculation reaction tank is connected with a flocculant dosing tank through a pipeline, the discharge end of the flocculation reaction tank is connected with a solid-liquid separator through a pipeline, the solid-liquid separator is communicated with a PH value adjusting tank before oxidation of the oxidation treatment mechanism through a pipeline, the top of the PH value adjusting tank before oxidation is communicated with a sulfuric acid storage tank, the oxidation treatment mechanism further comprises a Fenton high-speed reaction tank communicated with the PH value adjusting tank before oxidation through a pipeline, the top of the Fenton high-speed reaction tank is communicated with a Fenton auxiliary agent storage tank through a pipeline, the discharge end of the Fenton high-speed reaction tank is communicated with a PH adjusting tank after reaction through a pipeline, the PH adjusting tank after reaction is communicated with a screw-overlapping dehydrator through a pipeline, and the top of the PH adjusting, the spiral-stacked dehydrator is communicated with a temporary storage tank of the biochemical treatment mechanism through a pipeline, the rear end of the temporary storage tank is communicated with an IC reaction tank through a pipeline, the rear end of the IC reaction tank is communicated with an A/O biochemical reaction tank, the rear end of the A/O biochemical reaction tank is communicated with a membrane biochemical reactor, the rear end of the membrane biochemical reactor is communicated with a transfer tank of a deep oxidation adsorption reaction mechanism, the rear end of the transfer tank is provided with an oxidation adsorption high-speed reaction tank, the top of the oxidation adsorption high-speed reaction tank is communicated with an oxidation adsorption auxiliary agent dosing box, the rear end of the oxidation adsorption high-speed reaction tank is communicated with a post-reaction transfer tank through a pipeline, the rear end of the post-reaction transfer tank is communicated with an oxidation and adsorption filter press through a pipeline, the rear end of the oxidation and adsorption filter press is communicated with a PH (potential of hydrogen) adjusting tank, and a discharge end of the PH adjusting tank is provided with a post-treatment drain pipe.
Preferably, a deep oxidation treatment mechanism is arranged between the biochemical treatment mechanism and the deep oxidation adsorption reaction mechanism;
deepening oxidation treatment mechanism is including deepening PH adjusting tank before fenton, PH adjusting tank top has the sulphuric acid dosing tank through the pipeline intercommunication before the deepening fenton, the rear end of PH adjusting tank is equipped with deepening fenton high-speed retort before the deepening fenton, the top of deepening the fenton high-speed retort passes through pipeline intercommunication deepening fenton auxiliary agent storage tank, the rear end intercommunication of deepening the fenton high-speed retort has deepening behind the fenton PH adjusting tank, PH adjusting tank top intercommunication has the alkali dosing tank behind the deepening the fenton, the rear end intercommunication of deepening the fenton back PH adjusting tank has reaction back plate filter press, reaction back plate filter press passes through pipeline intercommunication transfer tank, the front end intercommunication of PH adjusting tank before the deepening the fenton membrane biochemical reactor.
Preferably, a flocculation transfer tank is communicated between the flocculation reaction tank and the solid-liquid separator through a pipeline;
the solid-liquid separator adopts a flocculation filter press, and the flocculation filter press is connected with two groups of the solid-liquid separator in parallel.
Preferably, the Fenton high-speed reaction tanks are at least provided with two groups, the top of each group of the Fenton high-speed reaction tanks is provided with a Fenton auxiliary agent storage tank, and the Fenton high-speed reaction tanks in different groups are connected in series.
Preferably, the Fenton high-speed reaction tank and the post-reaction PH regulation tank are connected in series and communicated with a plurality of groups of Fenton reaction tanks through pipelines.
Preferably, the oxidation adsorption high-speed reaction tank and the post-reaction transfer tank are communicated with each other through a pipeline, and the oxidation adsorption reaction tanks are communicated in series with a plurality of groups.
Preferably, the oxidation adsorption high-speed reaction tanks are at least provided with two groups, and the top of each group of oxidation adsorption high-speed reaction tanks is communicated with the oxidation adsorption auxiliary agent dosing box through a pipeline.
Preferably, the deepened Fenton high-speed reaction tank and the deepened Fenton post-PH adjusting tank are communicated with each other through a pipeline to form a deepened Fenton reaction tank, and the deepened Fenton reaction tanks are communicated in series with multiple groups.
Preferably, the deepened Fenton high-speed reaction tank is at least provided with two groups, and the top of each group of the deepened Fenton high-speed reaction tank is communicated with the deepened Fenton auxiliary storage tank through a pipeline.
The utility model has the advantages that:
(1) the utility model discloses a landfill leachate treatment system, provided with a flocculation treatment mechanism, an oxidation treatment mechanism, a biochemical treatment mechanism, a deep oxidation treatment mechanism and a deep oxidation adsorption reaction mechanism, carries out multiple treatment, carries out more comprehensive treatment on leachate so that the leachate is treated more thoroughly, and accords with the standard of discharged water;
(2) the utility model discloses a landfill leachate treatment system can handle some pollutants in the leachate through flocculation treatment mechanism, oxidation treatment mechanism, makes the leachate pollutant that enters biochemical treatment mechanism still less, and the effect is also higher when adopting biological method to handle, and the process of handling is faster;
(3) landfill leachate processing system, still carry out the oxidation adsorption treatment through further deepening oxidation treatment mechanism and degree of depth oxidation adsorption reaction mechanism to remaining the pollutant in filtration liquid through biochemical treatment mechanism, clear away remaining pollutant, ensure that the discharged water is safe nontoxic.
Drawings
FIG. 1 is a flow chart of the structure of an embodiment of the present invention;
in the figure: 1. a flocculation treatment mechanism; 1-1, a percolate liquid inlet pipe; 1-2, a flocculation reaction tank; 1-3, a flocculating agent dosing box; 1-4, a flocculation transfer tank; 1-5, flocculating filter press; 2. an oxidation treatment mechanism; 2-1, adjusting the pH value of the solution before oxidation; 2-2, a sulfuric acid storage tank; 2-3, a Fenton high-speed reaction tank; 2-4, a Fenton auxiliary agent storage tank; 2-5, a Fenton reaction tank; 2-6, and adjusting the pH value in a tank after reaction; 2-7, an alkaline agent dosing box; 2-8, stacking a spiral dehydrator; 3. a biochemical treatment mechanism; 3-1, temporarily storing the tank; 3-2, an IC reaction tank; 3-3, an A/O biochemical reaction tank; 3-4, a membrane biochemical reactor; 4. deepening an oxidation treatment mechanism; 4-1, a PH adjusting tank before deepening Fenton; 4-2, a sulfuric acid dosing tank; 4-3, deepening a Fenton high-speed reaction tank; 4-4, deepening a Fenton auxiliary storage tank; 4-5, deepening a Fenton reaction tank; 4-6, adding an alkali dosing tank; 4-7, deepening a PH adjusting tank after Fenton; 4-8, and performing plate type filter press after reaction; 5. a deep oxidation adsorption reaction mechanism; 5-1, a transfer tank; 5-2, oxidizing and adsorbing the high-speed reaction tank; 5-3, oxidizing and adsorbing the reaction tank; 5-4, oxidizing and adsorbing an auxiliary agent feeding box; 5-5, transferring the mixture to a tank after reaction; 5-6, oxidizing and adsorbing the mixture and then performing filter press; 5-7, PH is adjusted back to the tank; 5-8, and draining a water pipe after treatment.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in figure 1, a landfill leachate treatment system, include:
the flocculation treatment mechanism 1 is used for flocculating the percolate;
the oxidation treatment mechanism 2 is arranged at the rear end of the flocculation treatment mechanism 1 and is connected with the flocculation treatment mechanism through a pipeline;
the biochemical treatment mechanism 3 is arranged at the rear end of the oxidation treatment mechanism 2 and is connected with the oxidation treatment mechanism through a pipeline;
the deep oxidation adsorption reaction mechanism 5 is arranged at the rear end of the biochemical treatment mechanism 3 and is connected with the biochemical treatment mechanism through a pipeline;
the front end of the flocculation treatment mechanism 1 is provided with a leachate inlet pipe 1-1, the leachate inlet pipe 1-1 is communicated with a flocculation reaction tank 1-2, the top of the flocculation reaction tank 1-2 is connected with a flocculant dosing tank 1-3 through a pipeline, the discharge end of the flocculation reaction tank 1-2 is connected with a solid-liquid separator through a pipeline, the solid-liquid separator is communicated with a PH value adjusting tank 2-1 before oxidation of the oxidation treatment mechanism 2 through a pipeline, the oxidation treatment mechanism 2 further comprises a Fenton high-speed reaction tank 2-3 communicated with the PH value adjusting tank 2-1 before oxidation through a pipeline, the top of the PH value adjusting tank 2-1 before oxidation is communicated with a sulfuric acid storage tank 2-2, and the top of the Fenton high-speed reaction tank 2-3 is communicated with a Fenton auxiliary agent storage tank 2-4 through a pipeline, the discharge end of the Fenton high-speed reaction tank 2-3 is communicated with a post-reaction PH adjusting tank 2-6 through a pipeline, the post-reaction PH adjusting tank 2-6 is communicated with a stacked spiral dehydrator 2-8 through a pipeline, the top of the PH adjusting tank 2-6 is communicated with an alkaline agent dosing tank 2-7 through a pipeline, the stacked spiral dehydrator 2-8 is communicated with a temporary storage tank 3-1 of the biochemical treatment mechanism 3 through a pipeline, the rear end of the temporary storage tank 3-1 is communicated with an IC reaction tank 3-2 through a pipeline, the rear end of the IC reaction tank 3-2 is communicated with an A/O biochemical reaction tank 3-3, the rear end of the A/O biochemical reaction tank 3-3 is communicated with a membrane biochemical reactor 3-4, the rear end of the membrane biochemical reactor 3-4 is communicated with a transfer tank 5-1 of a deep oxidation adsorption reaction mechanism 5, the rear end of the transfer tank 5-1 is provided with an oxidation adsorption high-speed reaction tank 5-2, the top of the oxidation adsorption high-speed reaction tank 5-2 is communicated with an oxidation adsorption auxiliary agent dosing tank 5-4, the rear end of the oxidation adsorption high-speed reaction tank 5-2 is communicated with the post-reaction transfer tank 5-5 through a pipeline, the rear end of the post-reaction transfer tank 5-5 is communicated with an oxidation adsorption post-filter press 5-6 through a pipeline, the rear end of the oxidation adsorption post-filter press 5-6 is communicated with a PH readjustment tank 5-7, and the discharge end of the PH readjustment tank 5-7 is provided with a post-treatment drain pipe 5-8.
A deepened oxidation treatment mechanism 4 is arranged between the biochemical treatment mechanism 3 and the deep oxidation adsorption reaction mechanism 5;
the deepening oxidation treatment mechanism 4 comprises a PH adjusting tank 4-1 before deepening Fenton, the top of the PH adjusting tank 4-1 before deepening Fenton is communicated with a sulfuric acid dosing tank 4-2 through a pipeline, a deepening Fenton high-speed reaction tank 4-3 is arranged at the rear end of the PH adjusting tank 4-1 before deepening Fenton, the top of the deepening Fenton high-speed reaction tank 4-3 is communicated with a deepening Fenton auxiliary storage tank 4-4 through a pipeline, the rear end of the deepening Fenton high-speed reaction tank 4-3 is communicated with a deepening Fenton rear PH adjusting tank 4-7, the top of the deepening Fenton rear PH adjusting tank 4-7 is communicated with an alkali dosing tank 4-6, the rear end of the deepening Fenton rear PH adjusting tank 4-7 is communicated with a reaction rear plate type filter press 4-8, the reaction rear plate type filter press 4-8 is communicated with a transit tank 5-1 through a pipeline, the front end of the PH adjusting tank 4-1 before deepening Fenton is communicated with the membrane biochemical reactor 3-4.
A flocculation transfer tank 1-4 is communicated between the flocculation reaction tank 1-2 and the solid-liquid separator through a pipeline;
the solid-liquid separator adopts a flocculation filter press 1-5, and the flocculation filter press 1-5 is connected in parallel with each group.
The Fenton high-speed reaction tanks 2-3 are at least provided with two groups, the top of each group of the Fenton high-speed reaction tanks 2-3 is provided with a Fenton auxiliary agent storage tank 2-4, and the Fenton high-speed reaction tanks 2-3 in different groups are connected in series.
And a plurality of groups of Fenton reaction tanks 2-5 are also communicated in series between the Fenton high-speed reaction tank 2-3 and the post-reaction PH regulation tank 2-6 through pipelines.
The oxidation adsorption high-speed reaction tank 5-2 and the post-reaction transfer tank 5-5 are communicated with an oxidation adsorption reaction tank 5-3 through a pipeline, and the oxidation adsorption reaction tank 5-3 is communicated with a plurality of groups in series.
The oxidation adsorption high-speed reaction tanks 5-2 are at least provided with two groups, and the top of each group of oxidation adsorption high-speed reaction tanks 5-2 is communicated with the oxidation adsorption auxiliary agent dosing boxes 5-4 through pipelines.
The deepened Fenton high-speed reaction tank 4-3 and the deepened Fenton rear PH adjusting tank 4-7 are communicated with a deepened Fenton reaction tank 4-5 through a pipeline, and the deepened Fenton reaction tank 4-5 is communicated with a plurality of groups in a serial mode.
The deepened Fenton high-speed reaction tanks 4-3 are at least provided with two groups, and the top of each group of the deepened Fenton high-speed reaction tanks 4-3 is communicated with the deepened Fenton auxiliary agent storage tanks 4-4 through pipelines.
The utility model discloses a use as follows:
during operation, leachate enters a flocculation reaction tank 1-2 through a leachate inlet pipe 1-1, a flocculant is added into the flocculation reaction tank 1-2 through a flocculant dosing tank 1-3 to perform flocculation reaction, suspended particles are gathered to be larger or form flocs, the flocs are separated from the leachate through a flocculation filter press 1-5, the separated leachate enters an oxidation treatment mechanism 2 through a pipeline to perform oxidation treatment, firstly, a pH value is adjusted in a pH value adjusting tank 2-1 before oxidation, the pH value is adjusted to be about 4 through a sulfuric acid storage tank 2-2, then the leachate enters a Fenton high-speed reaction tank 2-3 to perform reaction, and at the moment, a Fenton auxiliary agent storage tank 2-4 injects hydrogen peroxide, ferrous sulfate and other auxiliary agents for oxidation reaction into the Fenton high-speed reaction tank 2-3, wherein the auxiliary agents comprise partial flocculant, after high-speed reaction, the leachate enters a plurality of groups of Fenton reaction tanks 2-5 connected in series for full reaction by stirring, and the treated leachate BOD5The ratio of COD is increased, the percolate enters a biochemical treatment mechanism 3 for biochemical treatment after solid-liquid separation through a spiral-stacked dehydrator 2-8 and is respectively treated through an IC reaction tank 3-2, an A/O biochemical reaction tank 3-3 and a membrane biochemical reactor 3-4, the percolate after biochemical treatment enters an advanced oxidation treatment mechanism 4 for further Fenton reaction treatment of macromolecular organic matters, the percolate after advanced oxidation treatment enters an advanced oxidation adsorption reaction mechanism 5 for further oxidation adsorption, firstly enters a transfer tank 5-1 and then enters an oxidation adsorption high-speed reaction tank 5-2 for reaction, an auxiliary agent is added into the oxidation adsorption high-speed reaction tank 5-2 through an oxidation adsorption auxiliary agent adding tank 5-4 for oxidation reaction, and meanwhile, a bleaching agent is added, The adsorbent is used for adsorption bleaching, and after the reaction is finished, the reaction is finishedThe leachate enters an oxidation adsorption reaction tank 5-3 for further reaction, enters a transfer tank 5-5 after reaction after being treated by a plurality of groups of oxidation adsorption reaction tanks 5-3 for temporary storage, is then subjected to filter pressing by a filter press 5-6 after oxidation adsorption so as to separate solid from liquid, the treated leachate is introduced into a PH transfer tank 5-7 for PH value transfer, the PH value of water is ensured to be about 7, and finally the treated leachate is discharged through a treated drain pipe 5-8.
TABLE 1 pollution index of leachate to be treated
TABLE 2 leachate pollution index after treatment in the examples
The utility model discloses mainly apply to the place that landfill leachate handled.
Of course, the above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the embodiments of the present invention. The present invention is not limited to the above examples, and the technical field of the present invention is equivalent to the changes and improvements made in the actual range of the present invention, which should be attributed to the patent coverage of the present invention.
Claims (9)
1. A landfill leachate treatment system, comprising:
the flocculation treatment mechanism (1) is used for flocculating the percolate;
the oxidation treatment mechanism (2) is arranged at the rear end of the flocculation treatment mechanism (1) and is connected with the flocculation treatment mechanism through a pipeline;
the biochemical treatment mechanism (3) is arranged at the rear end of the oxidation treatment mechanism (2) and is connected with the oxidation treatment mechanism through a pipeline;
the deep oxidation adsorption reaction mechanism (5) is arranged at the rear end of the biochemical treatment mechanism (3) and is connected with the biochemical treatment mechanism through a pipeline;
the front end of the flocculation treatment mechanism (1) is provided with a leachate inlet pipe (1-1), the leachate inlet pipe (1-1) is communicated with a flocculation reaction tank (1-2), the top of the flocculation reaction tank (1-2) is connected with a flocculant dosing tank (1-3) through a pipeline, the discharge end of the flocculation reaction tank (1-2) is connected with a solid-liquid separator through a pipeline, the solid-liquid separator is communicated with a PH value adjusting tank (2-1) before oxidation of the oxidation treatment mechanism (2) through a pipeline, the top of the PH value adjusting tank (2-1) before oxidation is communicated with a sulfuric acid storage tank (2-2), the oxidation treatment mechanism (2) further comprises a Fenton high-speed reaction tank (2-3) communicated with the PH value adjusting tank (2-1) before oxidation through a pipeline, the top of the Fenton high-speed reaction tank (2-3) is communicated with a Fenton auxiliary agent storage tank (2-4) through a pipeline, the discharge end of the Fenton high-speed reaction tank (2-3) is communicated with a PH adjusting tank (2-6) after reaction through a pipeline, the PH adjusting tank (2-6) after reaction is communicated with a screw overlapping dehydrator (2-8) through a pipeline, the top of the PH adjusting tank (2-6) is communicated with an alkaline agent dosing box (2-7) through a pipeline, the screw overlapping dehydrator (2-8) is communicated with a temporary storage tank (3-1) of the biochemical treatment mechanism (3) through a pipeline, the rear end of the temporary storage tank (3-1) is communicated with an IC reaction tank (3-2) through a pipeline, the rear end of the IC reaction tank (3-2) is communicated with an A/O biochemical reaction tank (3-3), the rear end of the A/O biochemical reaction tank (3-3) is communicated with a membrane biochemical reactor (3-4), the rear end of the membrane biochemical reactor (3-4) is communicated with a transfer tank (5-1) of a deep oxidation adsorption reaction mechanism (5), an oxidation adsorption high-speed reaction tank (5-2) is arranged at the rear end of the transfer tank (5-1), the top of the oxidation adsorption high-speed reaction tank (5-2) is communicated with an oxidation adsorption auxiliary agent dosing tank (5-4), the rear end of the oxidation adsorption high-speed reaction tank (5-2) is communicated with the post-reaction transfer tank (5-5) through a pipeline, the rear end of the post-reaction transfer tank (5-5) is communicated with an oxidation adsorption post-filter press (5-6) through a pipeline, the rear end of the filter press (5-6) after oxidation and adsorption is communicated with a PH callback tank (5-7), and a discharge end of the PH back-adjusting tank (5-7) is provided with a post-treatment drain pipe (5-8).
2. The landfill leachate treatment system of claim 1, wherein: a deep oxidation treatment mechanism (4) is arranged between the biochemical treatment mechanism (3) and the deep oxidation adsorption reaction mechanism (5);
the deepening oxidation treatment mechanism (4) comprises a PH adjusting tank (4-1) before deepening Fenton, the top of the PH adjusting tank (4-1) before deepening Fenton is communicated with a sulfuric acid dosing tank (4-2) through a pipeline, the rear end of the PH adjusting tank (4-1) before deepening Fenton is provided with a deepening Fenton high-speed reaction tank (4-3), the top of the deepening Fenton high-speed reaction tank (4-3) is communicated with a deepening Fenton auxiliary agent storage tank (4-4) through a pipeline, the rear end of the deepening Fenton high-speed reaction tank (4-3) is communicated with a deepening Fenton rear PH adjusting tank (4-7), the top of the deepening Fenton rear PH adjusting tank (4-7) is communicated with an alkali dosing tank (4-6), and the rear end of the deepening Fenton rear PH adjusting tank (4-7) is communicated with a rear reaction plate type filter press (4-8), the plate-type pressure filter (4-8) after the reaction is communicated with the transfer tank (5-1) through a pipeline, and the front end of the PH adjusting tank (4-1) before the deepening Fenton is communicated with the membrane biochemical reactor (3-4).
3. The landfill leachate treatment system of claim 2, wherein: a flocculation transfer tank (1-4) is communicated between the flocculation reaction tank (1-2) and the solid-liquid separator through a pipeline;
the solid-liquid separator adopts a flocculation filter press (1-5), and the flocculation filter press (1-5) is connected in parallel with each group.
4. The landfill leachate treatment system of claim 2, wherein: the Fenton high-speed reaction tanks (2-3) are at least provided with two groups, the top of each group of the Fenton high-speed reaction tanks (2-3) is provided with a Fenton auxiliary agent storage tank (2-4), and the Fenton high-speed reaction tanks (2-3) in different groups are connected in series.
5. The landfill leachate treatment system of claim 4, wherein: and a plurality of groups of Fenton reaction tanks (2-5) are connected in series and communicated between the Fenton high-speed reaction tank (2-3) and the post-reaction PH regulation tank (2-6) through pipelines.
6. The landfill leachate treatment system of claim 2, wherein: the oxidation adsorption high-speed reaction tank (5-2) and the post-reaction transfer tank (5-5) are communicated with an oxidation adsorption reaction tank (5-3) through a pipeline, and the oxidation adsorption reaction tank (5-3) is communicated in series with a plurality of groups.
7. The landfill leachate treatment system of claim 6, wherein: the oxidation adsorption high-speed reaction tanks (5-2) are at least provided with two groups, and the top of each group of oxidation adsorption high-speed reaction tanks (5-2) is communicated with the oxidation adsorption auxiliary agent dosing boxes (5-4) through pipelines.
8. The landfill leachate treatment system of any one of claims 2 to 7, wherein: deepened fenton high-speed retort (4-3) with deepened fenton back PH adjusts between the jar (4-7) and has deepened fenton retort (4-5) through the pipeline intercommunication, deepened fenton retort (4-5) concatenate the intercommunication and have the multiunit.
9. The landfill leachate treatment system of claim 8, wherein: the deepened Fenton high-speed reaction tank (4-3) is at least provided with two groups, and the top of each group of the deepened Fenton high-speed reaction tank (4-3) is communicated with the deepened Fenton auxiliary agent storage tank (4-4) through a pipeline.
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Effective date of registration: 20240110 Address after: Room 2205, Building 2, No. 625 Geguan Road, Dachang Street, Jiangbei New District, Nanjing City, Jiangsu Province, 210000 Patentee after: Jiangsu Secco Environmental Protection Technology Co.,Ltd. Address before: 255086 room b2510, advanced ceramic industry innovation park, 125 Liuquan Road, high tech Zone, Zibo City, Shandong Province Patentee before: Shandong Aldo Environmental Technology Co.,Ltd. |