CN211497322U - Treatment device for refuse landfill penetrating fluid - Google Patents
Treatment device for refuse landfill penetrating fluid Download PDFInfo
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- CN211497322U CN211497322U CN201922460719.4U CN201922460719U CN211497322U CN 211497322 U CN211497322 U CN 211497322U CN 201922460719 U CN201922460719 U CN 201922460719U CN 211497322 U CN211497322 U CN 211497322U
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Abstract
A treatment device for landfill penetrating fluid is characterized by comprising a microfiltration unit, a chemical reaction tank, a sedimentation tank, an electrolytic bath, a facultative tank, a hydrolysis acidification tank, an aerobic tank, an aeration biological filter, a nanofiltration unit, a reverse osmosis unit, a membrane distillation unit and an evaporation crystallization unit, wherein the microfiltration unit, the chemical reaction tank, the sedimentation tank, the electrolytic bath, the facultative tank, the hydrolysis acidification tank, the aerobic tank, the aeration biological filter, the nanofiltration unit and the reverse osmosis unit are sequentially connected, the membrane distillation unit is connected with a nanofiltration unit concentrated water gap and a reverse osmosis unit concentrated water gap, the evaporation crystallization unit is connected with the membrane distillation unit, a packing layer of the aeration biological filter comprises magnetite particles with the particle size of 10-20 mm. The nitrogen is effectively removed under the condition of low carbon nitrogen ratio, and the effluent quality is high.
Description
Technical Field
The utility model relates to a water treatment technical field, concretely relates to processing apparatus of refuse landfill penetrant.
Background
Landfill leachate, also known as leachate or leachate, is sewage generated by contact between garbage and precipitation or other external water, and is discharged without treatment to pollute the ground surface and underground water and harm the environment. The water quality of the garbage percolation water is complex and greatly changed, and at present, no perfect process suitable for treating the garbage percolation water exists, and the garbage percolation water is known to be one of the most difficult-to-treat wastewater. Most landfills provide targeted treatment schemes and processes according to specific situations and other economic and technical requirements. Currently, the main treatment processes recognized in the industry are: biochemistry + MBR + nanofiltration or reverse osmosis, wherein the biochemical process is most preferably A2/O, and the natural carbon-nitrogen ratio of the landfill leachate is low, so that the treatment process frequently encounters a problem of insufficient carbon source.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at overcomes the shortcoming that prior art exists, seeks to design a processing apparatus of landfill penetrant, and it can realize under the not enough condition of carbon source that carbon and nitrogen's high efficiency are got rid of.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a treatment device for landfill penetrating fluid comprises a microfiltration unit, a chemical reaction tank, a sedimentation tank, a filter press, an electrolytic tank, a facultative tank, a hydrolysis acidification tank, an aerobic tank, an aeration biological filter and a nanofiltration unit; the water outlet of the micro-filtration unit is connected with a chemical reaction tank, the chemical reaction tank is connected with a sedimentation tank, a sludge outlet of the sedimentation tank is connected with a filter press, a water outlet of the sedimentation tank is connected with an electrolytic bath, a water outlet of the electrolytic bath is connected with a facultative tank, a water outlet of the facultative tank is connected with a hydrolysis acidification tank, a water outlet of the hydrolysis acidification tank is connected with an aeration biological filter, a water outlet of the aeration biological filter is connected with a nanofiltration unit, a packing layer of the aeration biological filter comprises magnetite particles with the particle size of 10-20mm and nitrogen and phosphorus removal active biological carriers with the particle size of 3-8mm, and the nitrogen and phosphorus.
The treatment device of the refuse landfill penetrating fluid further comprises a reverse osmosis unit, a membrane distillation unit and an evaporation crystallization unit, wherein a water producing port of the nanofiltration unit is connected with the reverse osmosis unit, a concentrated water port of the nanofiltration unit and a concentrated water port of the reverse osmosis unit are both connected with the membrane distillation unit, and the membrane distillation unit is connected with the evaporation crystallization unit.
Compared with the prior art, the utility model following beneficial effect has: (1) the whole device can realize good treatment of the refuse landfill penetrating fluid as a whole, and the effluent quality of the device is good and stable; (2) the biological carriers with nitrogen and phosphorus removal activity in the packing layer of the aeration biological filter are adsorbed on the surfaces of the magnet particles, so that the uniform loading of the biological carriers with nitrogen and phosphorus removal activity is realized, the process of improving denitrification treatment is effectively promoted, and the effective removal of nitrogen is realized under the condition of low carbon-nitrogen ratio; (3) the membrane distillation unit and the reverse osmosis unit are added, so that the overall effluent quality of the device can be improved.
Drawings
FIG. 1 is a schematic view showing the structure of a landfill leachate treatment apparatus according to example 1.
The specific implementation mode is as follows:
the following further describes the present invention by way of specific embodiments with reference to the accompanying drawings.
Example 1
The treatment device of the refuse landfill penetrating fluid related to the embodiment comprises a microfiltration unit 1, a chemical reaction tank 2, a sedimentation tank 3, a filter press 13, an electrolytic bath 4, a facultative tank 5, a hydrolysis acidification tank 6, an aerobic tank 7, an aeration biological filter 8, a nanofiltration unit 9, a reverse osmosis unit 10, a membrane distillation unit 11 and an evaporation crystallization unit 12; the water outlet of the microfiltration unit 1 is connected with the chemical reaction tank 2, the chemical reaction tank 2 is connected with the sedimentation tank 3, the sludge outlet of the sedimentation tank 3 is connected with a filter press 13, the water outlet of the sedimentation tank 3 is connected with an electrolytic bath 4, the water outlet of the electrolytic bath 4 is connected with a facultative tank 5, the water outlet of the facultative tank 5 is connected with a hydrolysis acidification tank 6, the water outlet of the hydrolysis acidification tank 6 is connected with an aeration biological filter 8, the water outlet of the aeration biological filter 8 is connected with a nanofiltration unit 9, the water outlet of the nanofiltration unit 9 is connected with a reverse osmosis unit 10, the concentrated water outlet of the nanofiltration unit 9 and the concentrated water outlet of the reverse osmosis unit 10 are both connected with a membrane distillation unit 11, the membrane distillation unit 11 is connected with an evaporative crystallization unit 12, the packing layer of the aeration biological filter 8 comprises magnetite particles with the particle diameter of 10-20mm and denitrification and dephosphorization active.
The biological carrier with the nitrogen and phosphorus removal activity is disclosed in patent CN109019877A, and the carrier contains siderite, which is particularly easy to be adsorbed by magnet particles and surrounds the magnet particles.
The treatment process of the treatment device for the refuse landfill penetrating fluid related to the embodiment specifically comprises the following steps:
(1) firstly, introducing the landfill leachate into a microfiltration unit to remove suspended matters, partial bacteria, viruses and large-size colloids;
(2) then the wastewater enters a chemical reaction tank, lime milk is added into the chemical reaction tank, calcium and magnesium ions in the wastewater react with the lime milk to generate insoluble matters or colloid, the insoluble matters or the colloid flow into a sedimentation tank for sedimentation, solid waste obtained by sedimentation is sent into a filter press for compression, and the obtained solid waste is buried;
(3) pumping the filtrate produced by the filter press and the supernatant of the sedimentation tank into an electrolytic cell, and electrolyzing in the electrolytic cell to decompose macromolecular organic matters into micromolecular organic matters;
(4) then the sewage enters a facultative tank in sequence, under the action of microorganisms, part of macromolecular organic matters are decomposed into micromolecular organic matters, the effluent is sent into a hydrolysis acidification tank, the macromolecular organic matters which are difficult to biodegrade are converted into the micromolecular organic matters which are easy to biodegrade, the COD of the wastewater is further reduced, and the effluent enters an aerobic tank to convert the micromolecular organic matters into inorganic matters for removal;
(5) the effluent of the aerobic tank enters an aeration biological filter, organic matters are further decomposed by microorganisms, and NH is generated3Conversion of-N to NO3 —N, when entering the biological filter, the carbon content is relatively low, and the anoxic position of the filter and NO are generated under the auxiliary action of the nitrogen and phosphorus removal active biological carrier3 —Reduction of N to N2N, denitrification is realized, denitrification with low carbon content can be realized, biochemical treatment is carried out, most organic matters and ammonia nitrogen are removed, the biological aerated filter is controlled to work under a low aeration rate in the process, and the oxygen concentration in the filter is further controlled to be 2-3 mg/L;
(6) and (5) pumping the effluent into a nanofiltration unit, sending the water produced by the nanofiltration unit into a reverse osmosis system for further treatment, sending the reverse osmosis concentrated water and the water wetted by the nanofiltration unit into a membrane distillation unit together, concentrating the wastewater by 5-7 times by using the membrane distillation unit, then sending the wastewater into an evaporative crystallization unit for crystallization treatment, and converging the membrane distilled effluent and the water produced by the reverse osmosis system for recycling.
Claims (2)
1. A treatment device for landfill penetrating fluid is characterized by comprising a microfiltration unit, a chemical reaction tank, a sedimentation tank, a filter press, an electrolytic tank, a facultative tank, a hydrolysis acidification tank, an aerobic tank, an aeration biological filter and a nanofiltration unit; the water outlet of the micro-filtration unit is connected with a chemical reaction tank, the chemical reaction tank is connected with a sedimentation tank, a sludge outlet of the sedimentation tank is connected with a filter press, a water outlet of the sedimentation tank is connected with an electrolytic bath, a water outlet of the electrolytic bath is connected with a facultative tank, a water outlet of the facultative tank is connected with a hydrolysis acidification tank, a water outlet of the hydrolysis acidification tank is connected with an aeration biological filter, a water outlet of the aeration biological filter is connected with a nanofiltration unit, a packing layer of the aeration biological filter comprises magnetite particles with the particle size of 10-20mm and nitrogen and phosphorus removal active biological carriers with the particle size of 3-8mm, and the nitrogen and phosphorus.
2. The landfill leachate treatment apparatus of claim 1, further comprising a reverse osmosis unit, a membrane distillation unit and an evaporative crystallization unit, wherein the nanofiltration unit water production port is connected to the reverse osmosis unit, the nanofiltration unit water concentration port and the reverse osmosis unit water concentration port are both connected to the membrane distillation unit, and the membrane distillation unit is connected to the evaporative crystallization unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922460719.4U CN211497322U (en) | 2019-12-31 | 2019-12-31 | Treatment device for refuse landfill penetrating fluid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922460719.4U CN211497322U (en) | 2019-12-31 | 2019-12-31 | Treatment device for refuse landfill penetrating fluid |
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| CN211497322U true CN211497322U (en) | 2020-09-15 |
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| CN201922460719.4U Expired - Fee Related CN211497322U (en) | 2019-12-31 | 2019-12-31 | Treatment device for refuse landfill penetrating fluid |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113941254A (en) * | 2021-11-05 | 2022-01-18 | 上海烟草集团有限责任公司 | Reconstituted tobacco extract liquid concentration process and concentration system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113941254A (en) * | 2021-11-05 | 2022-01-18 | 上海烟草集团有限责任公司 | Reconstituted tobacco extract liquid concentration process and concentration system |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200915 Termination date: 20211231 |