CN211595353U - High-efficient denitrogenation system of landfill leachate - Google Patents
High-efficient denitrogenation system of landfill leachate Download PDFInfo
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- CN211595353U CN211595353U CN201921990477.3U CN201921990477U CN211595353U CN 211595353 U CN211595353 U CN 211595353U CN 201921990477 U CN201921990477 U CN 201921990477U CN 211595353 U CN211595353 U CN 211595353U
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- pond
- landfill leachate
- biological
- biological selector
- pipe
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- 239000000149 chemical water pollutant Substances 0.000 title claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000012528 membrane Substances 0.000 claims abstract description 23
- 238000009280 upflow anaerobic sludge blanket technology Methods 0.000 claims abstract description 21
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 206010021143 Hypoxia Diseases 0.000 claims abstract description 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 11
- 239000001301 oxygen Substances 0.000 claims abstract description 11
- 239000010802 sludge Substances 0.000 claims description 14
- 238000000108 ultra-filtration Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 11
- 239000002351 wastewater Substances 0.000 description 8
- 230000001105 regulatory effect Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 2
- CKUAXEQHGKSLHN-UHFFFAOYSA-N [C].[N] Chemical compound [C].[N] CKUAXEQHGKSLHN-UHFFFAOYSA-N 0.000 description 2
- 238000005273 aeration Methods 0.000 description 2
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 2
- 230000004071 biological effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 206010002660 Anoxia Diseases 0.000 description 1
- 241000976983 Anoxia Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000007953 anoxia Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000000909 electrodialysis Methods 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
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Abstract
The utility model relates to a landfill leachate handles technical field, especially, relate to a high-efficient denitrification system of landfill leachate, include the equalizing basin through the pipe connection, the biological selector, the oxygen deficiency pond, good oxygen pond, the MBR pond, the play water end of biological selector still is connected with UASB reactor, between equalizing basin and the biological selector, install out the water pump on the pipeline between biological selector and the UASB reactor, be provided with first back flow pipe and second back flow on good oxygen pond, first back flow pipe, the second back flow pipe respectively with the biological selector, the oxygen deficiency pond is linked together, be provided with mud export and liquid outlet on the MBR pond, mud exit linkage has concentrated mud pond, liquid outlet connection has the membrane treatment pond. The utility model discloses a high-efficient denitrogenation system of landfill leachate improves to front end preliminary treatment + biological treatment technical method among the traditional handicraft, has guaranteed the stability of biological treatment effect to a certain extent, and then has guaranteed the subsequent processing effect.
Description
Technical Field
The utility model relates to a landfill leachate handles technical field, especially relates to a high-efficient denitrification system of landfill leachate.
Background
The landfill leachate, also called leachate or leachate, refers to the sewage generated by fermentation, leaching and scouring of rainwater, and soaking of surface water and groundwater during the stacking and burying processes of domestic garbage. In the field of garbage treatment, the treatment of garbage leachate is divided into leachate treatment in domestic garbage incineration plants and leachate treatment in refuse landfills. The composition of landfill leachate in incineration plants and landfill sites is very complex and is typical high-concentration organic wastewater, but compared with the landfill leachate, the quality of the landfill leachate is greatly changed, and the carbon-nitrogen ratio, the pH value and the like of the leachate are obviously changed along with the continuous change of the 'age' of the landfill. Because leachate has reasons such as high ammonia nitrogen, carbon-nitrogen ratio imbalance and the like, the treatment of the leachate in the prior industry has the phenomena of unstable operation, difficult standard reaching of effluent, higher cost and the like.
The existing treatment of landfill leachate mainly comprises front-end pretreatment, anaerobic treatment, aerobic treatment and membrane treatment processes, and for different effluent requirements, the subsequent treatment of the leachate gradually adopts process technologies such as electrodialysis, advanced oxidation and the like. However, for the organic matter with high-concentration complex components, if the biological treatment at the front end does not achieve a certain effect, more processes are added subsequently, so that the processes are prolonged, the operation difficulty is increased, and the operation cost is doubled.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a high-efficient denitrogenation system of landfill leachate improves to front end preliminary treatment + biological treatment technical method among the traditional handicraft, has guaranteed the stability of biological treatment effect to a certain extent, and then has guaranteed the subsequent processing effect.
The utility model discloses an above-mentioned technical problem is solved to following technical means:
the utility model provides a high-efficient denitrification system of landfill leachate, includes equalizing basin, biological selector, oxygen deficiency pond, good oxygen pond, MBR pond through the pipe connection, the play water end of biological selector still is connected with the UASB reactor, the play water end of UASB reactor is connected with the end of intaking of biological selector, install out the water pump between equalizing basin and the biological selector, on the pipeline between biological selector and the UASB reactor, be provided with first back flow pipe and second back flow on the good oxygen pond, first back flow pipe, second back flow pipe are linked together with biological selector, oxygen deficiency pond respectively, be provided with mud export and liquid outlet on the MBR pond, the mud exit linkage has the concentrated pond of mud, the liquid outlet is connected with the membrane treatment pond.
Adopt above-mentioned technical scheme's utility model, when carrying out landfill leachate treatment, the filtration liquid of solid-liquid separation equipment processing such as grid is collected in the equalizing basin, after the regulation of carrying out quality of water yield in the equalizing basin, utilize out the water pump to change to the biological selector, after the biological selector selection, in the UASB reactor is changed to again through going out the water pump, after anaerobic reaction in the UASB reactor, waste water overflow in the UASB reactor returns the biological selector, again by the biological selector overflow to the oxygen deficiency pond in, through the oxygen deficiency pond, good oxygen pond biological treatment back, the partly backward flow of play water in good oxygen pond to the biological selector, partly backward flow to the oxygen deficiency pond, remaining flows after MBR pond is handled, discharge up to standard after membrane treatment pond deep treatment at last.
Wherein, at the in-process of handling, the come water of biological selection pond includes the play water of equalizing basin and the flowing back liquid in good oxygen pond, plays the effect of hydrolysis acidification on the one hand, plays the effect of adjusting the most suitable pH of anaerobism methanation and providing the reaction environment of methanation nitrate nitrogen on the one hand, simultaneously the utility model discloses a biological selection pond plays the effect of accepting front end preliminary treatment and connecting follow-up biochemical system, and if UASB reactor system breaks down, the equalizing basin goes out water and can directly jump to the oxygen deficiency pond through biological selection pond.
Further, be provided with a plurality of baffles in the equalizing basin, leave the clearance between one side of baffle and the inner wall of equalizing basin, it is a plurality of the baffle sets up in a crisscross way. Through the setting of a plurality of baffles, landfill leachate is after getting into the equalizing basin, and flow path is the S-shaped, has increased landfill leachate at the inside dwell time of equalizing basin, has increased the regulating effect of equalizing basin to landfill leachate quality of water yield.
Furthermore, a circulating pump is further installed at the water outlet of the regulating tank, the circulating pump is installed in parallel with the water outlet pump, and the outlet of the circulating pump is connected with the water inlet of the regulating tank. Through 24 hours of work of the circulating pump, the water quality and the water quantity in the regulating tank can be stabilized to a certain extent.
Furthermore, a water replenishing pipe and a heating circulating pipe are installed on the inner bottom surface of the biological selector, and an overflow weir is arranged on the outer surface of the top of the biological selector. The heating circulating pipe can play the heat retaining effect in the cold weather to guarantee the biological activity of useful bacterium to a certain extent, and the setting of overflow weir can prevent to influence the processing scale when UASB reactor trouble.
Further, a sludge pipe and a clear liquid pipe are arranged on the sludge concentration tank, and the outlet end of the clear liquid pipe is communicated with the aerobic tank.
Further, an immersed ultrafiltration membrane is arranged in the aerobic tank at a position close to the water outlet. The immersed ultrafiltration membrane is used for separating the sludge from the wastewater so as to facilitate subsequent membrane treatment and avoid the blockage of a membrane group due to excessive sludge in the wastewater.
The utility model has the advantages that:
the utility model discloses a high-efficient denitrogenation system of landfill leachate, front end preliminary treatment + biological treatment technical method in to traditional technology, need not to add the medicine, improve pretreatment tank design, change the anaerobism mode of intaking, combine preliminary treatment + anaerobism + good oxygen, utilize denitrification anaerobic methane oxidation, short distance denitrification and anaerobic ammonia oxidation principle, realize the stabilization of filtration liquid front end treatment, reduce organic load in the great degree, improve ammonia nitrogen removal efficiency, balanced carbon, nitrogen, the nutrition proportion of phosphorus, alleviate the follow-up treatment burden, reduce the processing degree of difficulty.
Drawings
FIG. 1 is a schematic structural view of a high-efficiency denitrification system for landfill leachate of the present invention;
FIG. 2 is a block diagram of the process of the high-efficiency denitrification system for landfill leachate of the present invention;
the device comprises an adjusting tank 1, a partition plate 11, a biological selector 2, an anoxic tank 3, an aerobic tank 4, a first return pipe 41, a second return pipe 42, an immersed ultrafiltration membrane 43, an MBR tank 5, an UASB reactor 6, a sludge concentration tank 7, a membrane treatment tank 8, an effluent pump 9 and a circulating pump 10.
Detailed Description
The invention will be described in detail with reference to the following drawings and specific embodiments:
as shown in figures 1-2, the utility model discloses a high-efficiency denitrification system for landfill leachate, which comprises an adjusting tank 1, a biological selector 2, an anoxic tank 3, an aerobic tank 4 and an MBR tank 5 which are connected by a pipeline, wherein a plurality of clapboards 11 are arranged in the adjusting tank 1, a gap is left between one side of each clapboard 11 and the inner wall of the adjusting tank 1, the clapboards 11 are arranged in a staggered way, after the landfill leachate enters the adjusting tank 1, the flow path of the landfill leachate is S-shaped, the retention time of the landfill leachate in the adjusting tank 1 is increased, the adjusting effect of the adjusting tank 1 on the quality and quantity of the landfill leachate is increased, the water outlet end of the biological selector 2 is also connected with an UASB reactor 6, the water outlet end of the UASB reactor 6 is connected with the water inlet end of the biological selector 2, a water pump 9 is arranged between the adjusting tank 1 and the biological selector 2 and the UASB reactor 6, circulating pump 10 is still installed to the delivery port of equalizing basin 1, circulating pump 10 and the parallelly connected installation of play water pump 9, the export of circulating pump 10 is connected with the water inlet of equalizing basin 1, in the in-process of using, the circulating pump 1024 h work of the delivery port of equalizing basin 1, on the one hand, can stabilize the flow of the delivery port of equalizing basin 1, on the other hand is through continuous return mixed flow, make the waste water of different time quantums mix as far as in the equalizing basin 1, thereby make the quality of water of the delivery port of equalizing basin 1 stable as far as, make things convenient for the steady operation of follow-up processing step.
The aerobic tank 4 is provided with a first return pipe 41 and a second return pipe 42, the first return pipe 41 and the second return pipe 42 are respectively communicated with the biological selector 2 and the anoxic tank 3, the position, close to the water outlet, in the aerobic tank 4 is provided with an immersed ultrafiltration membrane 43, and sludge and wastewater are separated through the immersed ultrafiltration membrane 43, so that subsequent membrane treatment is facilitated, and the phenomenon that the membrane group is blocked due to excessive sludge in the wastewater is avoided. The MBR tank 5 is provided with a sludge outlet and a liquid outlet, the sludge outlet is connected with a sludge concentration tank 7, the liquid outlet is connected with a membrane treatment tank 8, the sludge concentration tank 7 is provided with a sludge pipe 71 and a clear liquid pipe 72, and the outlet end of the clear liquid pipe 72 is communicated with the aerobic tank 4. Wherein, moisturizing pipe and heating circulating pipe are installed to the interior bottom surface of biological selector 2, the top surface is provided with the overflow weir, the setting of heating circulating pipe, can play heat retaining effect when weather is cold, thereby guarantee the biological activity of useful bacterium to a certain extent, and when the setting of overflow weir can prevent UASB reactor 6 trouble, influence the treatment scale, 5 bottoms in MBR pond have been laid micropore aeration pipe, make the anoxia pond of MBR pond 5 and front end on the one hand, good oxygen pond forms holistic biochemical system, the reduction membrane that the aeration can very big degree pollutes on the one hand, increase the life cycle of milipore filter, in addition, the top of the milipore filter bundle in MBR pond 5 can also set up high pressure water piping, can prevent that membrane bundle dead angle position is blockked up by wool silk mud etc.
The utility model discloses a use method as follows:
when the garbage leachate is treated, the leachate treated by a solid-liquid separation device such as a grating is collected in a regulating tank 1, after the water quality and the water quantity are regulated in the regulating tank 1, the leachate is transferred to a biological selector 2 by using a water outlet pump 9, is selected by the biological selector 2, is transferred to a UASB reactor 6 by using the water outlet pump 9, is subjected to anaerobic reaction in the UASB reactor 6, wastewater in the UASB reactor 6 overflows back to the biological selector 2, overflows into an anoxic tank 3 by the biological selector 2, is subjected to biological treatment in the anoxic tank 3 and the aerobic tank 4, part of effluent in the aerobic tank 4 flows back to the biological selector 2, part of effluent flows back to the MBR anoxic tank 3, and the rest flows into a membrane treatment tank 5 for treatment, and is finally subjected to deep treatment by a membrane treatment tank 8 and is discharged after reaching the standard through a selectively permeable membrane in the membrane treatment tank 8.
Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art will understand that the present invention can be modified or replaced with other embodiments without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims. The technology, shape and construction parts which are not described in detail in the present invention are all known technology.
Claims (6)
1. The utility model provides a landfill leachate high efficiency denitrification system which characterized in that: include equalizing basin, biological selector, oxygen deficiency pond, good oxygen pond, MBR pond through the pipe connection, the play water end of biological selector still is connected with the UASB reactor, the play water end of UASB reactor is connected with the end of intaking of biological selector, install out the water pump between equalizing basin and the biological selector, on the pipeline between biological selector and the UASB reactor, be provided with first back flow pipe and second back flow on the good oxygen pond, first back flow pipe, second back flow pipe are linked together with biological selector, oxygen deficiency pond respectively, be provided with mud export and liquid outlet on the MBR pond, mud exit linkage has the concentrated pond of mud, the liquid outlet connection has the membrane treatment pond.
2. The high-efficiency denitrification system for landfill leachate of claim 1, wherein: be provided with a plurality of baffles in the equalizing basin, leave the clearance between one side of baffle and the inner wall of equalizing basin, it is a plurality of the baffle sets up in a crisscross way.
3. The high-efficiency denitrification system for landfill leachate of claim 2, wherein: the water outlet of the adjusting tank is also provided with a circulating pump, the circulating pump is installed in parallel with the water outlet pump, and the outlet of the circulating pump is connected with the water inlet of the adjusting tank.
4. The high-efficiency denitrification system for landfill leachate of claim 3, wherein: the inner bottom surface of the biological selector is provided with a water replenishing pipe and a heating circulating pipe, and the outer surface of the top of the biological selector is provided with an overflow weir.
5. The high-efficiency denitrification system for landfill leachate of claim 4, wherein: and a sludge pipe and a clear liquid pipe are arranged on the sludge concentration tank, and the outlet end of the clear liquid pipe is communicated with the aerobic tank.
6. The high efficiency denitrification system for landfill leachate according to any one of claims 1-5, wherein: an immersed ultrafiltration membrane is arranged in the aerobic tank at a position close to the water outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921990477.3U CN211595353U (en) | 2019-11-18 | 2019-11-18 | High-efficient denitrogenation system of landfill leachate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921990477.3U CN211595353U (en) | 2019-11-18 | 2019-11-18 | High-efficient denitrogenation system of landfill leachate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211595353U true CN211595353U (en) | 2020-09-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921990477.3U Expired - Fee Related CN211595353U (en) | 2019-11-18 | 2019-11-18 | High-efficient denitrogenation system of landfill leachate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211595353U (en) |
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2019
- 2019-11-18 CN CN201921990477.3U patent/CN211595353U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200929 |
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| CF01 | Termination of patent right due to non-payment of annual fee |