CN102491590A - Device and method for treating landfill leachate - Google Patents
Device and method for treating landfill leachate Download PDFInfo
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- CN102491590A CN102491590A CN2011104047554A CN201110404755A CN102491590A CN 102491590 A CN102491590 A CN 102491590A CN 2011104047554 A CN2011104047554 A CN 2011104047554A CN 201110404755 A CN201110404755 A CN 201110404755A CN 102491590 A CN102491590 A CN 102491590A
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Abstract
The invention discloses a device and method for treating landfill leachate, which relate to the field of sewage treatment and are used for reducing the running cost and running energy consumption of landfill leachate treatment and enhancing a treatment effect. The device comprises an ammonia air stripping tower, wherein the ammonia air stripping tower is connected with a clarification tank; the clarification tank is connected with a gradient aeration well; the periphery of the upper side of the gradient aeration well is provided with a buffering circulating tank; the buffering circulating tank is connected with a de-aeration tank; and the de-aeration tank is connected with a secondary sedimentation tank. The invention further provides a method for treating landfill leachate by adopting the device. The method comprises the following steps of: removing ammonia nitrogen from the leachate by using the air stripping tower; removing a part of organic matters by using an efficient clarification tank; performing organic matter degrading treatment on a water body by using the gradient aeration well; feeding the treated water into the de-aeration tank to improve the settling performance of sludge; and performing solid-liquid separation in the secondary sedimentation tank. The treatment device and the method have the advantages of small floor area and effective treatment of the landfill leachate at low consumption.
Description
Technical field
The present invention relates to chemical field, relate in particular to a kind of sewage disposal technology, particularly a kind of device and method that adopts the treating refuse percolate of gradient aeration coupling chemical process.
Background technology
Deep aerating well (Deep Shaft Process); Also claim " ultra deep water aeration ", " deep-well aeration "; It is a kind of novel waste water treatment process; Nineteen sixty-eight at first is applied in the wastewater treatment by Britain Imperial Chemical Industries Limited (Imperial Chemical Industries Ltd.), and the Billingham in Britain had built up the first in the world half productive deep aerating well device in 1974.
Along with the growth of expanding economy and people's opening, quickening of urbanization process, the municipal wastes quantity growth is rapid.The rubbish of China mostly adopts the mode of landfill to handle and dispose, and the annual diafiltration liquid measure that produces is very huge.Percolate concentration is high, change of water quality is big, toxicity is big, biodegradability is relatively poor, and routine biochemistry treatment process treating refuse percolate energy consumption is high, can not adapt to the impact of load variations, and it is stable that treatment effect is difficult to keep.
The effect that wastewater biochemical is handled mainly receives the influence of the following aspects factor: dissolved oxygen fully, waste water fully contacts with active sludge, higher sludge concentration; The tradition biochemical process is because the restriction of oxygen dissolution ability; Dissolved oxygen concentration is not high, is difficult to keep the aeration tank to keep higher sludge concentration.
According to the mass transfer principle of oxygen in water, the deep aerating well is because pressure is high, and oxygen solubility is big, and mass transfer force is strong; Flow in the well is a turbulent state, and Reynolds number is high, and bubble diameter is more small, and air bubble liquid-membrane upgrades very fast, and again because voidage is lower, and gas-liquid two-phase mixes, the mass transfer coefficient value is big simultaneously.Long duration of contact because of bubble and liquid again, thus oxygen transfer rate is increased.
In addition; In the deep aerating well; Inject the air bubble energy needed in the downtake; Can be by the bubble that discharges in the upcast produces the effect of rising and obtain sizable counteracting, the energy that oxidation effect is spent when therefore obtaining high gaseous phase partial pressure is also little, so power efficiency of oxygen supply is high.
Coagulating sedimentation is an important method of wastewater treatment; In percolate is handled; Coagulation Method is the most frequently used, most economical and one of most important method; It is mainly used in the removal of the suspended substance in the percolate, insoluble COD, decolouring and heavy metal, and ammonia nitrogen is also had certain removal effect.It both can be used as the means that pre-treatment also can be used as advanced treatment, directly used coagulation very big as the method dosing of water treatment, also was difficult to reach requirement, used seldom separately.
Summary of the invention
To the defective that exists in the above-mentioned prior art, technical problem to be solved by this invention provide a kind of running cost and operation energy consumption low, treatment effect is good, the device and method of stable treating refuse percolate.
In order to solve the problems of the technologies described above, the invention provides a kind of device of treating refuse percolate, comprise an Ammonia blowing-out tower; Described Ammonia blowing-out tower is connected with a settling pond; Described settling pond is connected with a gradient aeration well, and the periphery of the aboveground side of described gradient aeration is provided with a buffer cycles pond, and described gradient aeration well and described buffer cycles pond are connected; Described buffer cycles pond is connected with a degassing pond, and described degassing pond is connected with a second pond.
Further; Be provided with filler in the inner chamber of described Ammonia blowing-out tower, a sidewall on the top of described Ammonia blowing-out tower is provided with one first water inlet pipe, and the top of described Ammonia blowing-out tower is provided with a venting port; Described venting port is connected with a gas absorbing device; The bottom of described Ammonia blowing-out tower is provided with one first rising pipe, and the bottom of described Ammonia blowing-out tower is provided with an inlet pipe, and described inlet pipe is connected with a blower fan.
Further; The bottom of described settling pond is provided with one second water inlet pipe and one first blow-off pipe; First rising pipe of described second water inlet pipe and described Ammonia blowing-out tower is connected; The top of described settling pond is provided with one first effluent weir, and the sidewall of described first effluent weir is provided with one second rising pipe.
Further; Described gradient aeration well is made up of the inner core of an open upper end and the urceolus of an open upper end; Described urceolus is arranged on the outside of inner core, and described inner core and urceolus are connected in the bottom, in described inner core, is provided with at least one inner core aeration zone; Described inner core aeration zone laterally arranges up and down; Be provided with an inner core aeration head in any described inner core aeration zone, in the gap of described inner core and urceolus, be provided with at least one urceolus aeration zone, described urceolus aeration zone laterally arranges up and down; Be provided with a urceolus aeration head in any described urceolus aeration zone, second rising pipe of the water-in of described inner core and described settling pond is connected.
Further; Described inner core aeration head is made up of one group of first compressed-air atomizer; Described first compressed-air atomizer is provided with downwards; The air outlet of described first compressed-air atomizer and one first air compressor machine is connected, and described first compressed-air atomizer also is connected with one first valve with a first flow meter.
Further; Described urceolus aeration head is made up of one group of second compressed-air atomizer; Described second compressed-air atomizer upwards is provided with; The air outlet of described second compressed-air atomizer and one second air compressor machine is connected, and described second compressed-air atomizer also is connected with one second valve with one second under meter.
Further; The bottom of described second pond is provided with one the 3rd water inlet pipe and one second blow-off pipe; Described the 3rd water inlet pipe is connected with the water outlet in described degassing pond; Second rising pipe of described second blow-off pipe and described settling pond is connected, and the upper end of described second pond is provided with one second effluent weir, and the sidewall of described second effluent weir is provided with the 3rd rising pipe.
Concrete, described second blow-off pipe is connected with a sludge reflux pump.
Further, described Ammonia blowing-out tower also is connected with a pH regulator device.
Further, described buffer cycles pond and the adjacent setting in described degassing pond are provided with an overflow weir between described buffer cycles pond and the described degassing pond.
Further, the described degassing is provided with at least one boring aeration pipe in the pond, and described boring aeration pipe is connected with one the 3rd air compressor machine.
Concrete, described first air compressor machine, second air compressor machine and the 3rd air compressor machine can be same air compressor machine.
The present invention also provides the method that adopts above-mentioned apparatus processes percolate, comprises the steps:
1) outside percolate is introduced through first water inlet pipe of Ammonia blowing-out tower; And regulate its pH value; Utilize the filler of the inside of Ammonia blowing-out tower that percolate is fully contacted with the pressurized air of blower fan input, get rid of most ammonia-nitrogen, the back that disposes enters settling pond through first rising pipe with water body; The ammonia that the Ammonia blowing-out tower stripping goes out gets into gas absorbing device through top vent, and ammonia is absorbed the back discharging;
The water body of 2) being discharged by Ammonia blowing-out tower imports efficient settling pond, add coagulating agent after, in the pond, remove portion C OD, and remove the virose material of mikrobe through reaction, the water after the processing and entering after the mud that second pond refluxes mixes are at aeration well inner core;
3) water that gets into the aeration well is in the overflow weir entering degassing pond of after circulation, passing through the buffer cycles pond under the compressed-air actuated effect;
4) in degassing pond, remove the microbubble on the biological floe through the mode of perforated pipe aerating regulation; Flow into second pond then and realize solid-liquid separation; Water body after disposing is discharged through the 3rd water shoot after covering the second pond effluent weir; Sedimentary sludge part is back to aeration well inner core to be mixed with the water that settling pond is discharged, and remaining part mud is disposed with efficient settling pond sludge discharged.
Further, its pH value of percolate of entering Ammonia blowing-out tower is adjusted to more than or equal to 9.5.
Principle of work of the present invention is: percolate makes percolate fully contact with pressurized air through the inner filler of Ammonia blowing-out tower, gets rid of most ammonia-nitrogen.The water body of being discharged by Ammonia blowing-out tower gets into efficient settling pond; After adding coagulating agent; In the pond, remove portion C OD through reaction, and remove sterilant, heavy metal ion etc. to the virose material of mikrobe, treat effluent is mixed the back with the mud that second pond refluxes and is got at aeration well inner core.The mixed solution that gets into inner core gets into urceolus through the aeration bottom and gets into the buffer cycles pond then; Wherein part gets into the inner core circulation again; The setting of aeration well makes mixed solution form the two-part flow up-down recycle system of going up and down respectively; The waste water that gets into the aeration well gets into degassing pond at the overflow weir that after repeatedly circulating, passes through the buffer cycles pond under the compressed-air actuated effect; Gradient aeration well utilizes the mikrobe in air and the mud that percolate is carried out the organic concentration degradation treatment, makes the organic concentration in the water body reach preset value.Boring aeration pipe is established in bottom, degassing pond, and aforementioned blower fan air outlet connects boring aeration light, and degassing back flows into second pond.In degassing pond, remove and stick to microbubble on the biological floe that the aeration well produces through the mode of perforated pipe aerating regulation; Flow into second pond then and realize solid-liquid separation; Water body after disposing divides discharge through its water outlet after covering the second pond effluent weir; Sedimentary sludge part is back to aeration well inner core to be mixed with water inlet, and remaining part is disposed with efficient settling pond sludge discharged separately.
The present invention compares with prior art, and its technical progress is significant.The device and method of treating refuse percolate of the present invention utilizes Ammonia blowing-out tower to remove most ammonia-nitrogen earlier, removes portion C OD through efficient settling pond then; And remove sterilant, heavy metal ion etc. to the virose material of mikrobe, and improve the active sludge upgrowth situation, utilize the gradient aeration to improve in the well gas, solid, liquid three effect that contacts again; Through the adjusting of different layers nozzle tolerance, form good gradient aeration environment, its operation energy consumption is lower; Floor space is little, and treatment effect is good.
Description of drawings
Fig. 1 is the structural representation of the device of a kind of treating refuse percolate of the present invention;
Fig. 2 is the structural representation of Ammonia blowing-out tower in the device of a kind of treating refuse percolate of the present invention;
Fig. 3 is the structural representation of the gradient aeration well in the device of a kind of treating refuse percolate of the present invention.
Embodiment
Below in conjunction with description of drawings embodiments of the invention are described in further detail, but present embodiment is not limited to the present invention, every employing analog structure of the present invention and similar variation thereof all should be listed protection scope of the present invention in.
Like Fig. 1, Fig. 2 and shown in Figure 3; The invention provides a kind of device of treating refuse percolate; Comprise an Ammonia blowing-out tower 1, described Ammonia blowing-out tower 1 is connected with a settling pond 2, and described settling pond 2 is connected with a gradient aeration well 3; The periphery of described gradient aeration well 3 upsides is provided with a buffer cycles pond 7; Described gradient aeration well 3 is connected with described buffer cycles pond 7, and described buffer cycles pond 7 is connected with a degassing pond 5, and described degassing pond 5 is connected with a second pond 6.
Further; Be provided with filler in the inner chamber of described Ammonia blowing-out tower 1; A sidewall on the top of described Ammonia blowing-out tower 1 is provided with one first water inlet pipe 8; The top of described Ammonia blowing-out tower 1 is provided with a venting port 9, and described venting port 9 is connected with a gas absorbing device (not shown), and the bottom of described Ammonia blowing-out tower 1 is provided with one first rising pipe 10; The bottom of described Ammonia blowing-out tower 1 is provided with an inlet pipe 11, and described inlet pipe 11 is connected with a blower fan 12.
Further; The bottom of described settling pond 2 is provided with one second water inlet pipe 13 and one first blow-off pipe 14; First rising pipe 10 of described second water inlet pipe 13 and described Ammonia blowing-out tower 1 is connected; The top of described settling pond 2 is provided with one first effluent weir 15, and the sidewall of described first effluent weir 15 is provided with one second rising pipe 16.
Further; Described gradient aeration well 3 is made up of the inner core 17 of an open upper end and the urceolus 18 of an open upper end; Described urceolus 18 is arranged on the outside of inner core 17, and described inner core 17 and urceolus 18 are connected in the bottom, in described inner core 17, are provided with at least one inner core aeration zone; Described inner core aeration zone laterally arranges up and down; Be provided with an inner core aeration head 19 in any described inner core aeration zone, in the gap of described inner core 17 and urceolus 18, be provided with at least one urceolus aeration zone, described urceolus aeration zone laterally arranges up and down; Be provided with a urceolus aeration head 20 in any described urceolus aeration zone, second rising pipe 16 of the water-in of described inner core and described settling pond 2 is connected.
Concrete, described inner core aeration zone is that the first inner core aeration zone is 27, the second inner core aeration zone 28, the 3rd inner core aeration zone 29;
Concrete, said aeration head respectively is provided with three layers in inner core 17 and urceolus 18, aeration well 3 is divided into three aeration zones, and described urceolus aeration zone is that the first urceolus aeration zone is 30, the second urceolus aeration zone 31, the 3rd urceolus aeration zone 32.Waste water gets into inner core 17 from the rising pipe of settling pond 2, gets into degassing pond 5 through urceolus 18, buffer cycles pond 7 then;
Further; Described inner core aeration head 19 is made up of one group of first compressed-air atomizer; Described first compressed-air atomizer is provided with downwards; The air outlet of described first compressed-air atomizer and one first air compressor machine is connected, and described first compressed-air atomizer also is connected with one first valve with a first flow meter.
Further; Described urceolus aeration head 20 is made up of one group of second compressed-air atomizer; Described second compressed-air atomizer upwards is provided with; The air outlet of described second compressed-air atomizer and one second air compressor machine is connected, and described second compressed-air atomizer also what a second under meter is connected with one second valve.
Further; The bottom of described second pond 6 is provided with one the 3rd water inlet pipe 22 and one second blow-off pipe 23; The water outlet 26 in described the 3rd water inlet pipe 22 and described degassing pond 5 is connected; Second rising pipe 16 of described second blow-off pipe 23 and described settling pond 2 is connected, and the upper end of described second pond 6 is provided with one second effluent weir 24, and the sidewall of described second effluent weir 24 is provided with the 3rd rising pipe 25.
Concrete, described second blow-off pipe 23 is connected with a sludge reflux pump.
Further, described Ammonia blowing-out tower 1 also is connected with a pH regulator device (not shown).
Further, described buffer cycles pond 7 and the 5 adjacent settings of described degassing pond are provided with an overflow weir 21 between described buffer cycles pond 7 and the described degassing pond 5.
Further, be provided with at least one boring aeration pipe in the described degassing pond 5, described boring aeration pipe is connected with one the 3rd air compressor machine.
Concrete, described first air compressor machine, second air compressor machine and the 3rd air compressor machine can be same air compressor machine 4.
The present invention also provides the method that adopts above-mentioned apparatus processes percolate, comprises the steps:
1) outside percolate is introduced through first water inlet pipe 8 of Ammonia blowing-out tower 1; And regulate its pH value; Utilize the filler of the inside of Ammonia blowing-out tower 1 that percolate is fully contacted with the pressurized air of blower fan 12, get rid of most ammonia-nitrogen, the back that disposes enters settling pond 2 through first rising pipe with water body; The ammonia that Ammonia blowing-out tower 1 stripping goes out gets into gas absorbing device through top vent 9, and ammonia is absorbed the back discharging;
The water body of 2) being discharged by Ammonia blowing-out tower 1 imports efficient settling pond 2; After adding coagulating agent; In the pond, remove portion C OD through reaction, and remove the virose material of mikrobe, the water after the processing mixes the back with the mud that second pond 6 refluxes and gets at aeration well 3 inner cores 17;
3) water that gets into aeration well 3 is in the overflow weir entering degassing pond 5 of after circulation, passing through buffer cycles pond 7 under the compressed-air actuated effect;
4) in degassing pond 5, remove the microbubble on the biological floe through the mode of perforated pipe aerating regulation; Flow into second pond 6 then and realize solid-liquid separation; Water body after disposing covers second pond 6 effluent weirs 24 backs and discharges through the 3rd water shoot; Sedimentary sludge part is back to aeration well 3 inner cores 17 to be mixed with the water that settling pond 2 is discharged, and remaining part mud is disposed with efficient settling pond 2 sludge discharged.
Further, its pH value of percolate of entering Ammonia blowing-out tower 1 should be adjusted to more than or equal to 9.5.
Claims (12)
1. the device of a treating refuse percolate; Comprise an Ammonia blowing-out tower, it is characterized in that: described Ammonia blowing-out tower is connected with a settling pond, and described settling pond is connected with a gradient aeration well; The periphery of the aboveground side of described gradient aeration is provided with a buffer cycles pond; Described gradient aeration well and described buffer cycles pond are connected, and described buffer cycles pond is connected with a degassing pond, and described degassing pond is connected with a second pond.
2. the device of a kind of treating refuse percolate as claimed in claim 1; It is characterized in that: be provided with filler in the inner chamber of described Ammonia blowing-out tower; A sidewall on the top of described Ammonia blowing-out tower is provided with one first water inlet pipe; The top of described Ammonia blowing-out tower is provided with a venting port, and described venting port is connected with a gas absorbing device, and the bottom of described Ammonia blowing-out tower is provided with one first rising pipe; The bottom of described Ammonia blowing-out tower is provided with an inlet pipe, and described inlet pipe is connected with a blower fan.
3. the device of a kind of treating refuse percolate as claimed in claim 1; It is characterized in that: the bottom of described settling pond is provided with one second water inlet pipe and one first blow-off pipe; First rising pipe of described second water inlet pipe and described Ammonia blowing-out tower is connected; The top of described settling pond is provided with one first effluent weir, and the sidewall of described first effluent weir is provided with one second rising pipe.
4. the device of a kind of treating refuse percolate as claimed in claim 1; It is characterized in that: described gradient aeration well is made up of the inner core of an open upper end and the urceolus of an open upper end; Described urceolus is arranged on the outside of inner core, and described inner core and urceolus are connected in the bottom, in described inner core, is provided with at least one inner core aeration zone; Described inner core aeration zone laterally arranges up and down; Be provided with an inner core aeration head in any described inner core aeration zone, in the gap of described inner core and urceolus, be provided with at least one urceolus aeration zone, described urceolus aeration zone laterally arranges up and down; Be provided with a urceolus aeration head in any described urceolus aeration zone, second rising pipe of the water-in of described inner core and described settling pond is connected.
5. the device of a kind of treating refuse percolate as claimed in claim 4; It is characterized in that: described inner core aeration head is made up of one group of first compressed-air atomizer; Described first compressed-air atomizer is provided with downwards; The air outlet of described first compressed-air atomizer and one first air compressor machine is connected, and described first compressed-air atomizer also is connected with one first valve with a first flow meter.
6. the device of a kind of treating refuse percolate as claimed in claim 4; It is characterized in that: described urceolus aeration head is made up of one group of second compressed-air atomizer; Described second compressed-air atomizer upwards is provided with; The air outlet of described second compressed-air atomizer and one second air compressor machine is connected, and described second compressed-air atomizer also is connected with one second valve with one second under meter.
7. the device of a kind of treating refuse percolate as claimed in claim 1; It is characterized in that: the bottom of described second pond is provided with one the 3rd water inlet pipe and one second blow-off pipe; Described the 3rd water inlet pipe is connected with the water outlet in described degassing pond; Second rising pipe of described second blow-off pipe and described settling pond is connected, and the upper end of described second pond is provided with one second effluent weir, and the sidewall of described second effluent weir is provided with the 3rd rising pipe.
8. the device of a kind of treating refuse percolate as claimed in claim 1 is characterized in that: described Ammonia blowing-out tower also is connected with a pH regulator device.
9. the device of a kind of treating refuse percolate as claimed in claim 1 is characterized in that: described buffer cycles pond and the adjacent setting in described degassing pond are provided with an overflow weir between described buffer cycles pond and the described degassing pond.
10. the device of a kind of treating refuse percolate as claimed in claim 1 is characterized in that: the described degassing is provided with at least one boring aeration pipe in the pond, and described boring aeration pipe is connected with one the 3rd air compressor machine.
11. adopt the method for the described apparatus processes percolate of claim 1, it is characterized in that comprising the steps:
1) outside percolate is introduced through first water inlet pipe of Ammonia blowing-out tower; And regulate its pH value; Utilize the filler of the inside of Ammonia blowing-out tower that percolate is fully contacted with the pressurized air of blower fan input, get rid of most ammonia-nitrogen, the back that disposes enters settling pond through first rising pipe with water body; The ammonia that the Ammonia blowing-out tower stripping goes out gets into gas absorbing device through top vent, and ammonia is absorbed the back discharging;
The water body of 2) being discharged by Ammonia blowing-out tower imports efficient settling pond, add coagulating agent after, in the pond, remove portion C OD, and remove the virose material of mikrobe through reaction, the water after the processing and entering after the mud that second pond refluxes mixes are at aeration well inner core;
3) water that gets into the aeration well is in the overflow weir entering degassing pond of after circulation, passing through the buffer cycles pond under the compressed-air actuated effect;
4) in degassing pond, remove the microbubble on the biological floe through the mode of perforated pipe aerating regulation; Flow into second pond then and realize solid-liquid separation; Water body after disposing is discharged through the 3rd water shoot after covering the second pond effluent weir; Sedimentary sludge part is back to aeration well inner core to be mixed with the water that settling pond is discharged, and remaining part mud is disposed with the settling pond sludge discharged.
12. the method for treating refuse percolate as claimed in claim 11 is characterized in that: its pH value of percolate that gets into Ammonia blowing-out tower is adjusted to more than or equal to 9.5.
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| CN2011104047554A CN102491590A (en) | 2011-12-08 | 2011-12-08 | Device and method for treating landfill leachate |
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| CN2011104047554A CN102491590A (en) | 2011-12-08 | 2011-12-08 | Device and method for treating landfill leachate |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102942973A (en) * | 2012-11-23 | 2013-02-27 | 中国农业大学 | Method and system for combined air stripping biogas slurry depth treatment and biogas purification and desulfurization |
| CN103523920A (en) * | 2012-07-06 | 2014-01-22 | 李进民 | Biological sewage treatment device |
| CN107720990A (en) * | 2017-10-26 | 2018-02-23 | 莱州洁宇机械设备有限公司 | A kind of refuse leachate and urban sewage treating device |
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| CN101293703A (en) * | 2008-05-23 | 2008-10-29 | 上海广联建设发展有限公司 | Apparatus for treating reinforced concrete structure deep well aeration waste water and prepraring method thereof |
| CN101870543A (en) * | 2010-07-14 | 2010-10-27 | 柳州森淼环保技术开发有限公司 | Landfill percolate treatment novel process |
| CN202322572U (en) * | 2011-12-08 | 2012-07-11 | 上海广联建设发展有限公司 | Device for processing landfill leachate |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101293703A (en) * | 2008-05-23 | 2008-10-29 | 上海广联建设发展有限公司 | Apparatus for treating reinforced concrete structure deep well aeration waste water and prepraring method thereof |
| CN101870543A (en) * | 2010-07-14 | 2010-10-27 | 柳州森淼环保技术开发有限公司 | Landfill percolate treatment novel process |
| CN202322572U (en) * | 2011-12-08 | 2012-07-11 | 上海广联建设发展有限公司 | Device for processing landfill leachate |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103523920A (en) * | 2012-07-06 | 2014-01-22 | 李进民 | Biological sewage treatment device |
| CN103523920B (en) * | 2012-07-06 | 2015-09-30 | 李进民 | Biological sewage treatment device |
| CN102942973A (en) * | 2012-11-23 | 2013-02-27 | 中国农业大学 | Method and system for combined air stripping biogas slurry depth treatment and biogas purification and desulfurization |
| CN107720990A (en) * | 2017-10-26 | 2018-02-23 | 莱州洁宇机械设备有限公司 | A kind of refuse leachate and urban sewage treating device |
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Owner name: TONGJI UNIVERSITY Effective date: 20130823 |
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Inventor after: Fang Zhaochang Inventor after: Niu Jing Inventor after: Zhao Youcai Inventor after: Zhang Tongju Inventor after: He Yijia Inventor after: Gu Yuanxing Inventor before: Fang Zhaochang Inventor before: Zhang Tongju Inventor before: He Yijia Inventor before: Gu Yuanxing |
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Free format text: CORRECT: INVENTOR; FROM: FANG ZHAOCHANG ZHANG TONGJU HE YIJIA GU YUANXING TO: FANG ZHAOCHANG NIU JING ZHAO YOUCAI ZHANG TONGJU HE YIJIA GU YUANXING |
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Effective date of registration: 20130823 Address after: 200444 Shanghai city Baoshan District Jinqiu road 2399 Lane 1 B Applicant after: Shanghai Guanglian Building Development Co., Ltd. Applicant after: Tongji University Address before: 200444 Shanghai city Baoshan District Jinqiu road 2399 Lane 198, building 1 B zone Applicant before: Shanghai Guanglian Building Development Co., Ltd. |
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Application publication date: 20120613 |