CN103387312B - Multi-stage biological contact oxidation reactor sewage disposal device - Google Patents
Multi-stage biological contact oxidation reactor sewage disposal device Download PDFInfo
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- CN103387312B CN103387312B CN201310298211.3A CN201310298211A CN103387312B CN 103387312 B CN103387312 B CN 103387312B CN 201310298211 A CN201310298211 A CN 201310298211A CN 103387312 B CN103387312 B CN 103387312B
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- 230000003647 oxidation Effects 0.000 title claims abstract description 53
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 53
- 239000010865 sewage Substances 0.000 title claims abstract description 53
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000005273 aeration Methods 0.000 claims abstract description 31
- 238000005276 aerator Methods 0.000 claims abstract description 27
- 238000001556 precipitation Methods 0.000 claims abstract description 26
- 238000005352 clarification Methods 0.000 claims abstract description 19
- 239000000945 filler Substances 0.000 claims description 27
- 239000011229 interlayer Substances 0.000 claims description 9
- 230000000630 rising effect Effects 0.000 claims description 8
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 7
- 238000012545 processing Methods 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 7
- 244000005700 microbiome Species 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 239000010802 sludge Substances 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000000813 microbial effect Effects 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 230000003698 anagen phase Effects 0.000 description 1
- 230000003042 antagnostic effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002503 metabolic effect Effects 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Biological Treatment Of Waste Water (AREA)
Abstract
The present invention relates to a kind of sewage disposal device, particularly a kind of multi-stage biological contact oxidation reactor sewage disposal device.Its structure comprises at least 2 the bio-contact oxidation tanks and 1 precipitation settling tank that are connected in series by connecting pipeline, described bio-contact oxidation tank is made up of tank body in cylindrical outer tank body and truncated cone, by annular water conservancy diversion gap conducting between described interior tank body and outer tank body, the aerating system that described interior tank interior arranges floated plant imitating biological filling system and is made up of aerator, air supervisor and aeration tube; Described precipitation settling tank comprises precipitation clarification tank body, and described precipitation clarification tank body lower part is rounding taper type mud collection area, and precipitation clarification tank body axial centre is perpendicular stream pipe, and the submersible sewage pump for spoil disposal function is placed on mud collection area, and submersible sewage pump is connected with shore pipe; Described aerator is connected automatic control system with submersible sewage pump.A kind of multi-stage biological contact oxidation reactor sewage disposal device of the present invention, its processing efficiency is high, energy efficient, production and easy for installation, use and maintenance is simple.
Description
Technical field
The present invention relates to a kind of sewage disposal device, particularly a kind of multi-stage biological contact oxidation reactor sewage disposal device.
Background technology
Along with the continuous increase of China's rapid development of economy and urban population, centralized sewage work has not caught up with the needs of development, sewage network is not laid in a lot of place maybe cannot lay sewage network (as mountain area etc.), cause a large amount of sanitary sewage to be processed completely and just enter water body, cause the eutrophication of water body, thus the process of decentralized type sewage treatment facility to above-mentioned sewage plays an important role, and middle-size and small-size buried sewage treatment equipment is most widely used a kind of equipment in numerous decentralized type sewage treatment facility.
Current middle-size and small-size buried sewage treatment equipment adopts Biological Contact Oxidation Process mostly, namely in biological reaction tank, biologic packing material is hung, filler grows microbial film, aeration head (pipe) is arranged on below filler also to the microorganism above filler and the active sludge oxygen supply in sewage, the whole filler of sewage submergence of oxygenation, and flow through filler with certain flow velocity, sewage extensively contacts with microbial film, on microbial film microorganism metabolism under, dirty organic pollutants is removed, and sewage is purified.
Traditional buried sewage treatment equipment produced based on Biological Contact Oxidation Process has several defect: (1) biological contact oxidation pond is single pond type, fluidised form belongs to completely hybrid, all microorganisms are all in same reaction tank, the metabolic type different due to it and the different requirements to nutrition, the struggle for existence between microorganism can be formed, reduce microorganism to the cleaning action of sewage.(2) filler hung in biological reaction tank is fixed on above upper and lower filler support, aeration head or aeration tube below filler, make personnel cannot enter maintenance at the bottom of pond or change after aeration head or aeration tube damage owing to there being the stop of fixed filler, the processing efficiency of sewage apparatus progressively reduces until equipment scrapping.(3) in order to ensure the unlikely reduction of sludge concentration in biological reaction tank, usually by reflux pump, the mud in settling tank being carried out partial reflux, adding power consumption.
Summary of the invention
In order to solve the problem of prior art, the invention provides a kind of multi-stage biological contact oxidation reactor sewage disposal device, its processing efficiency be high, energy efficient, production and easy for installation, use and maintenance is simple.
The technical solution adopted in the present invention is as follows:
A kind of multi-stage biological contact oxidation reactor sewage disposal device, comprise at least 2 the bio-contact oxidation tanks and 1 precipitation settling tank that are connected in series by connecting pipeline, described bio-contact oxidation tank is made up of tank body in cylindrical outer tank body and truncated cone, by annular water conservancy diversion gap conducting between described interior tank body and outer tank body, the aerating system that described interior tank interior arranges floated plant imitating biological filling system and is made up of aerator, air supervisor and aeration tube; Described precipitation settling tank comprises precipitation clarification tank body, and described precipitation clarification tank body lower part is rounding taper type mud collection area, and precipitation clarification tank body axial centre is perpendicular stream pipe, and the submersible sewage pump for spoil disposal function is placed on mud collection area, and submersible sewage pump is connected with shore pipe; Described aerator is connected automatic control system with submersible sewage pump.
The top of each bio-contact oxidation tank is provided with access hole pedestal, and pedestal is arranged 3 access holes, center access hole is opened on interior tank body, and it arranges nor'wester; The access hole both sides, the center that is distributed in of other 2 access hole symmetries, are opened on the interlayer between interior outer tank body, it are arranged access hole cover plate.
Each bio-contact oxidation tank body is provided with water inlet pipe, and its one end perforate is outside outer tank body, and the other end stretches into inside interior tank body.
Arrange water leg in interlayer between inside and outside tank body, the perforate of rising pipe one end is in water leg, and the other end perforate is outside outer tank body.
Floated plant imitating biological filling system comprises floated plant imitating biological filler and filler support, and described filler one end is fixed on the filler support of tank body inner bottom part, and the other end is not fixed.
The center access hole of bio-contact oxidation tank installs aerator support, installs aerator above support, there is wind and rain cap at aerator top on the access hole of center.
There is a vertical air supervisor axial centre position of each bio-contact oxidation tank, and the upper end of vertical air supervisor is connected with wired hose with a horizontal air supervisor, and the lower end of vertical air supervisor is connected with bottom aeration tube; One end of horizontal air supervisor is connected with aerator escape pipe wired hose.
The upper end of the vertical air supervisor in bio-contact oxidation tank is fixed on above the access hole aerator support of center, and lower end is connected with bottom aeration tube, and bottom aeration tube is not fixed, and the surrounding of bottom aeration tube is dispersed with floated plant imitating biological filler.
The stream top of pipe is erected at the center of precipitation clarification tank body and middle part is straight pipe shape, and bottom is hydraucone shape.
The water inlet pipe one end open of precipitation clarification tank body is in the outside of tank body, and the other end is opened on the inner side that stream pipe is erected at center.
The beneficial effect that technical scheme provided by the invention is brought is:
(1) volume is little, simple for structure, reasonable in design, produce and easy for installation.
(2) for multiple-tank body is in series, each bio-contact oxidation tank interior can be regarded as completely hybrid, and the water quality of fluctuation is diluted and homogenizing, and shock resistance is stronger; And pulling flow type between upper level and next stage bio-contact oxidation tank body, can be regarded as, the microorganism selection spatially realizing Different growth phases and difference in functionality distributes, the synergy between same organism population can be given full play to, overcome the antagonistic action between different microorganisms population, significantly improve processing efficiency.
(3) it is just fixing on the filler support of tank body bottom that the floated in equipment imitates pasture and water filler, and filler swings as pasture and water in water.Do not fix and the unfixed constructional feature in aeration tube lower end just because of filler upper end, make the aeration tube being placed on tank base do not risen to access hole place, top by the stop of filler to overhaul, this guarantees aerating system to be achieved and to overhaul easily and manage, maintainer with entering tank body maintenance, can also realize maintenance of not cutting off the water never.
(4) bio-contact oxidation tank body is divided into cylindrical outer tank body and circular cone bench-type inner canister body, and interior outer tank body is by the annular water conservancy diversion gap conducting between them, and interior tank interior is aeration zone, and the interlayer between interior outer tank body is the settling region of mud-water separation.After mud-water separation, most of mud is deposited to aeration zone by annular water conservancy diversion gap automatic back flow, ensure that active sludge does not run off, and the process of this backflow is without power consumption, has saved electric energy.
(5) by the intermittent operation of aerator, built oxygen condition and oxygen-starved area state in aeration zone, as well oxygen condition during aeration, is not anoxic condition during aeration, carries out nitrification and denitrification effect, realize denitrogenation in the same area.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of multi-stage biological contact oxidation reactor sewage disposal device of the present invention.
In figure: 1, outer tank body; 2, interior tank body; 3, annular water conservancy diversion gap; 4, vertical air supervisor; 5, floated imitates pasture and water filler; 6, aeration tube; 7, water inlet pipe; 8, access hole pedestal; 9, wired hose; 10, aerator, 11, aerator support; 12, collapsible shield; 13, water leg; 14, rising pipe; 15, horizontal air supervisor; 16, connecting pipeline; 17, access hole cover plate; 18, perpendicular stream pipe; 19, shore pipe; 20, mud collection area; 21, sludge pump.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
Embodiment one
As shown in Figure 1, a kind of multi-stage biological contact oxidation reactor sewage disposal device of the present invention, it is made up of bio-contact oxidation tank, precipitation settling tank, filling system, aerating system, sludge drainage system and automatic control system.Bio-contact oxidation tank is made up of with upper tank body 2 or 2, and each tank body is made up of tank body 2 in cylindrical outer tank body 1 and truncated cone again, and interior tank body 2 and outer tank body 1 are by annular water conservancy diversion gap 3 conducting between them.Floated plant imitating biological filling system 5 is set in each bio-contact oxidation tank body.Precipitation clarification tank body is made up of 1 tank body, and described tank body lower part is rounding taper type mud collection area 20, and tank body axial centre is perpendicular stream pipe 18, and the submersible sewage pump 21 for spoil disposal function is placed on mud collection area 20, and submersible sewage pump 21 is connected with shore pipe 19.The water inlet pipe 7 of next stage tank body is connected with the rising pipe 14 of upper level tank body by connecting pipeline 16.Aerating system is responsible for (horizontal air supervisor 15 and vertical air are responsible for 4) by aerator 10, air and branched aeration tube 6 is formed.The power parts such as described aerator 10, submersible sewage pump 21 are connected with automatic control system.
The top of each bio-contact oxidation tank is provided with access hole pedestal 8, and pedestal 8 is arranged 3 access holes, center access hole is opened on interior tank body, it is arranged nor'wester 12; Other 2 access holes are distributed in access hole both sides, center symmetrically, are opened on the interlayer between interior outer tank body, it are arranged access hole cover plate 17.
The water inlet pipe 7 of each bio-contact oxidation tank, one end perforate is outside outer tank body 1, and the other end stretches into inside interior tank body 2.Water inlet pipe 7 one end open of precipitation clarification tank body is in the outside of tank body, and the other end is opened on the inner side that stream pipe 18 is erected at center.
Arrange water leg 13 in interlayer between inside and outside tank body, rising pipe 14 one end perforate is in water leg 13, and the other end perforate is outside outer tank body 1.
In each bio-contact oxidation tank body, floated plant imitating biological filler 5 one end is fixed on tank inner bottom part, and the other end is not fixed.
The center access hole of a bio-contact oxidation tank wherein installs aerator support 11, and install aerator 10 above support, aerator 10 top has on the access hole of nor'wester 12 Gai center.
There is a vertical air supervisor 4 each bio-contact oxidation tank axial centre position, and the upper end of vertical air supervisor 4 is responsible for 15 with a horizontal air and is connected with wired hose 9, and the lower end of vertical air supervisor 4 is connected with bottom aeration tube 6; One end of horizontal air supervisor 15 is connected with aerator escape pipe wired hose 9.
The upper end of vertical air supervisor 4 is fixed on above center access hole aerator support 11, and lower end is connected with bottom aeration tube 6, and bottom aeration tube 6 is not fixed, and the surrounding of bottom aeration tube 6 is dispersed with the imitative pasture and water filler 5 of floated.
Perpendicular stream pipe 18 top and the middle part at precipitation clarification tank body axle center are straight pipe shape, and bottom is hydraucone shape.
The technical process of a kind of multi-stage biological contact oxidation reactor sewage disposal device of the present invention is: sewage flows into interior tank body 2 from water inlet pipe 7, microbial film in interior tank body 2 and the organism of active sludge in the aeration situation of aerator 10 in degradation of sewage, the pollutents such as ammonia nitrogen, mud mixture after degraded flows into equipment interlayer from annular water conservancy diversion gap 3, and mud-water separation is realized in equipment interlayer, mud under precipitation automatically returns to inner canister aeration zone, the complete sewage of one-level bio-contact oxidation cell processing flows out from rising pipe, enter two stage biological catalytic oxidation unit and continue process, erect from the water center entered in precipitation clarification tank body that two stage biological catalytic oxidation unit rising pipe flows out and flow pipe 18, reach mud collection area 20 to flowing to down, muddy water is from the process up flowed in bottom, suspended substance precipitates clarification further, final water purification is from the rising pipe discharge of precipitation clarification tank body, and mud sludge pump 21 gets to lagoon Anaerobic Digestion by shore pipe 19.
A kind of multi-stage biological contact oxidation reactor sewage disposal device of the present invention, its processing and fabricating is very simple and convenient, processing and fabricating shown in by specification accompanying drawing.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a multi-stage biological contact oxidation reactor sewage disposal device, it is characterized in that, comprise at least 2 the bio-contact oxidation tanks and 1 precipitation settling tank that are connected in series by connecting pipeline, described bio-contact oxidation tank is made up of tank body in cylindrical outer tank body and truncated cone, by annular water conservancy diversion gap conducting between described interior tank body and outer tank body, the aerating system that described interior tank interior arranges floated plant imitating biological filling system and is made up of aerator, air supervisor and aeration tube; Described precipitation settling tank comprises precipitation clarification tank body, and described precipitation clarification tank body lower part is rounding taper type mud collection area, and precipitation clarification tank body axial centre is perpendicular stream pipe, and the submersible sewage pump for spoil disposal function is placed on mud collection area, and submersible sewage pump is connected with shore pipe; Described aerator is connected automatic control system with submersible sewage pump; Described floated plant imitating biological filling system comprises floated plant imitating biological filler and filler support, and described floated plant imitating biological filler one end is fixed on the filler support of tank body inner bottom part, and the other end is not fixed.
2. according to multi-stage biological contact oxidation reactor sewage disposal device according to claim 1, it is characterized in that, the top of each bio-contact oxidation tank is provided with access hole pedestal, pedestal is arranged 3 access holes, center access hole is opened on interior tank body, and it arranges nor'wester; The access hole both sides, the center that is distributed in of other 2 access hole symmetries, are opened on the interlayer between interior outer tank body, it are arranged access hole cover plate.
3. according to multi-stage biological contact oxidation reactor sewage disposal device according to claim 1, it is characterized in that, each bio-contact oxidation tank is provided with water inlet pipe, and its one end perforate is outside outer tank body, and the other end stretches into inside interior tank body.
4. according to multi-stage biological contact oxidation reactor sewage disposal device according to claim 1, it is characterized in that, arrange water leg in the interlayer between inside and outside tank body, the perforate of rising pipe one end is in water leg, and the other end perforate is outside outer tank body.
5. according to the multi-stage biological contact oxidation reactor sewage disposal device described in claim 1 or 2, it is characterized in that: on the center access hole of bio-contact oxidation tank, aerator support is installed, install aerator above support, there is wind and rain cap at aerator top on the access hole of center.
6. according to multi-stage biological contact oxidation reactor sewage disposal device according to claim 1, it is characterized in that, there is a vertical air supervisor axial centre position of each bio-contact oxidation tank, the upper end of vertical air supervisor is connected with wired hose with a horizontal air supervisor, and the lower end of vertical air supervisor is connected with bottom aeration tube; One end of horizontal air supervisor is connected with aerator escape pipe wired hose.
7. according to the multi-stage biological contact oxidation reactor sewage disposal device described in claim 1 or 6, it is characterized in that, the upper end of the vertical air supervisor in bio-contact oxidation tank is fixed on above the access hole aerator support of center, lower end is connected with bottom aeration tube, bottom aeration tube is not fixed, and the surrounding of bottom aeration tube is dispersed with floated plant imitating biological filler.
8. according to multi-stage biological contact oxidation reactor sewage disposal device according to claim 1, it is characterized in that, the stream top of pipe is erected at the center of precipitation clarification tank body and middle part is straight pipe shape, and bottom is hydraucone shape.
9. according to multi-stage biological contact oxidation reactor sewage disposal device according to claim 1, it is characterized in that, the water inlet pipe one end open of precipitation clarification tank body is in the outside of tank body, and the other end is opened on the inner side that stream pipe is erected at center.
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| CN201310298211.3A CN103387312B (en) | 2013-07-17 | 2013-07-17 | Multi-stage biological contact oxidation reactor sewage disposal device |
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| CN201310298211.3A CN103387312B (en) | 2013-07-17 | 2013-07-17 | Multi-stage biological contact oxidation reactor sewage disposal device |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105347629A (en) * | 2015-12-11 | 2016-02-24 | 广西南宁绿泽环保科技有限公司 | Multistage compound moving bed biofilm reactor (MC-MBBR) |
| CN106145517A (en) * | 2016-06-28 | 2016-11-23 | 董超超 | A kind of multi stage decompression sewage disposal device |
| CN106517658A (en) * | 2016-11-23 | 2017-03-22 | 合肥齐飞信息技术有限公司 | Industrial waste water purification and cleaning equipment |
| CN106746341A (en) * | 2016-12-30 | 2017-05-31 | 中天正涵（天津）环保科技有限公司 | A kind of multipole biological contact oxidation reactor for sewage disposal |
| CN106681405A (en) * | 2016-12-30 | 2017-05-17 | 成都机缘环保科技有限公司 | Sewage treatment monitoring device and remote monitoring system |
| CN108046549A (en) * | 2018-02-06 | 2018-05-18 | 湖南惟创环境科技有限公司 | A kind of sewage disposal device |
| CN108862591A (en) * | 2018-09-06 | 2018-11-23 | 青岛沃安环境科技有限公司 | A kind of multistage AO sewage disposal device of intensified denitrification and dephosphorization function |
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| CN2542657Y (en) * | 2002-04-08 | 2003-04-02 | 青岛依维优环境工程设备有限公司 | Integrated sewage treatment device |
| CN201321417Y (en) * | 2008-10-07 | 2009-10-07 | 东台市东方船舶装配有限公司 | Multi-level biochemical domestic sewage treatment device |
| CN203419818U (en) * | 2013-07-17 | 2014-02-05 | 滕新君 | Sewage disposal equipment for multi-stage bio-contact oxidation reactors |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI449675B (en) * | 2008-12-29 | 2014-08-21 | Ind Tech Res Inst | System and method for treating waste water containing ammonia |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2542657Y (en) * | 2002-04-08 | 2003-04-02 | 青岛依维优环境工程设备有限公司 | Integrated sewage treatment device |
| CN201321417Y (en) * | 2008-10-07 | 2009-10-07 | 东台市东方船舶装配有限公司 | Multi-level biochemical domestic sewage treatment device |
| CN203419818U (en) * | 2013-07-17 | 2014-02-05 | 滕新君 | Sewage disposal equipment for multi-stage bio-contact oxidation reactors |
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Effective date of registration: 20170725 Address after: 710065 Shaanxi city of Xi'an province high tech Zone Fenghui Road No. 16 No. 4 international Thailand Jinmao building 15 layer Patentee after: Shaanxi long Environmental Protection Technology Co., Ltd. Address before: Shinan District two road 266000 Shandong Huayan city of Qingdao province No. 1 1 unit 501 Patentee before: Teng Xinjun |
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Application publication date: 20131113 Assignee: Qingdao wo'an Environmental Technology Co. Ltd. Assignor: Shaanxi long Environmental Protection Technology Co., Ltd. Contract record no.: 2017990000358 Denomination of invention: Multilevel biological contact oxidation reactor sewage treatment device Granted publication date: 20150805 License type: Exclusive License Record date: 20170907 |
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Address after: Floor 15, building 4, Taihua Jinmao international, No. 16, Fenghui South Road, high tech Zone, Xi'an, Shaanxi 710065 Patentee after: China chemical langzheng Environmental Protection Technology Co.,Ltd. Address before: Floor 15, building 4, Taihua Jinmao international, No. 16, Fenghui South Road, high tech Zone, Xi'an, Shaanxi 710065 Patentee before: SHAANXI LANGZHENG ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. |