CN106242050B - A kind of vertical internal-circulating integrated sewage treating apparatus - Google Patents
A kind of vertical internal-circulating integrated sewage treating apparatus Download PDFInfo
- Publication number
- CN106242050B CN106242050B CN201610601340.9A CN201610601340A CN106242050B CN 106242050 B CN106242050 B CN 106242050B CN 201610601340 A CN201610601340 A CN 201610601340A CN 106242050 B CN106242050 B CN 106242050B
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- zone
- plate component
- treating apparatus
- sloping plate
- sludge
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
Abstract
The invention discloses a kind of vertical internal-circulating integrated sewage treating apparatus, including the air lift area set gradually from top to down, aerobic zone, anoxic zone and anaerobic zone, air lift area is equipped with regurgitant volume adjuster, the lower section of regurgitant volume adjuster is equipped with central tube, aerobic zone is equipped with biologic packing material, aerated conduit component is equipped with below aerobic zone, water inlet pipe is equipped at the bottom plate of anaerobic zone, three phase separator is equipped between anaerobic zone and anoxic zone, circulating pump is equipped between three phase separator and the bottom of anaerobic zone, the two sides in air lift area are equipped with the type sloping plate component for removing mud, the top of type sloping plate component is equipped with packing layer.The present invention solves in the prior art that process equipment is more, cumbersome, takes up a large area, and the structure of type sloping plate component is simple, solves the problems, such as filtration device structure complexity.
Description
Technical field
The present invention relates to technical field of sewage treatment equipment, particularly relates to a kind of vertical internal-circulating integrated sewage disposal and set
It is standby.
Background technique
Sewage treatment is usually made of physical method, chemical method, physical-chemical process and the big series of biochemical process four, is mostly
It is likely to complete entire sewage disposal process by two or more method, equipment is based on building construction, machine
Based on unit cell supplemented by electric equipment, there is taking up a large area, investment is high, and operating cost is high, and anti-load-bearing capacity is poor, reaction
Low efficiency, management are compared with the problem fallen behind, device efficiency is low.A similar work is continued to use always to the processing of sewage at present
Skill route, such as traditional activated sludge process, develop to A/O technique and A2/O technique, are substantially to increase to detest (scarce) oxygen biological treatment
With detest (scarce) oxygen pond, while being further processed organic matter, increase dephosphorization and denitrification effect, and ton cost of investment and fortune
Row cost will also increase；Process flow increases, and device efficiency is low；For another example by traditional activated sludge process develop to oxidation ditch (including
Two ditch formulas or three ditch formulas), only pond body reaction is changed to ditch precursor reactant, increases based on treatment effect, process route also changes not
Greatly；Certainly the SBR technique developed to later, biomembrane process etc. are all built although having its feature in treatment effect and efficiency
Standing is taking building construction as method and route supplemented by main processing equipment and its technique and electromechanical equipment, and equipment is not innovated
Transformation improves its reaction rate, on treatment effect.So ton sewage treatment investment and ton sewage treatment operating cost all do not have
There is breakthrough reduction.
Traditional sewage treatment process is that elastic filler is hung in pond mostly, and elastic filler has biggish surface area,
The attachment for being conducive to microorganism increases the concentration of microorganism in pond, has preferable removal effect to organic matter.Biology connects
Touching oxidation+filter is the preferable process combination that solves the above problems, and water outlet can satisfy emission request, but the process equipment compared with
It is more, it is cumbersome, it takes up a large area, filtration device structure is complicated.
Summary of the invention
The present invention proposes a kind of vertical internal-circulating integrated sewage treating apparatus, solve in the prior art process equipment compared with
It is more, it is cumbersome, it takes up a large area, the problem of filtration device structure complexity.
The technical scheme of the present invention is realized as follows:
A kind of vertical internal-circulating integrated sewage treating apparatus, including set gradually from top to down air lift area, aerobic zone,
Anoxic zone and anaerobic zone, air lift area are equipped with regurgitant volume adjuster, and the lower section of regurgitant volume adjuster is equipped with central tube, and central tube is from gas
It mentions area and extends downward into anoxic zone；Aerobic zone is equipped with biologic packing material, is equipped with aerated conduit component, the bottom of anaerobic zone below aerobic zone
It is equipped with water inlet pipe at portion, three phase separator is equipped between anaerobic zone and anoxic zone, between three phase separator and the bottom of anaerobic zone
Equipped with circulating pump, the two sides in air lift area are equipped with the type sloping plate component for removing sludge, and the top of type sloping plate component is equipped with packing layer.
Further, the bottom plate of anaerobic zone is equipped with bottom blow-down pipe, and middle part sewage pipe is equipped between anaerobic zone and anoxic zone.
It further, further include tank body, air lift area, aerobic zone, anoxic zone and anaerobic zone are in tank body, three phase separation
Device is also in tank body, and tank body is equipped with one for exporting the biogas pipe of biogas at position corresponding with three phase separator.
Further, air lift area includes tapered portion and the choke that is located above tapered portion, and type sloping plate component is located at taper
The two sides in portion and choke, sewage are successively flowed through from tapered portion and choke, and a part enters central tube, and another part enters oblique
Board group part, type sloping plate component separate sludge from sewage, and the sewage after removing sludge passes through packing layer.
Further, the lower section of packing layer is equipped with aeration tube, and for aeration tube for washing away packing layer, the top of packing layer is close
The position of top of the tank is equipped with drainpipe, and drainpipe is for being discharged by type sloping plate component and packing layer treated sewage.
Further, aerated conduit component includes the air inlet pipe being located at below aerobic zone.
Further, anoxic zone side is equipped with online DO instrument.
Further, type sloping plate component includes several parallel inclined plates, and inclined plate includes the upper half and lower half, and the upper half is under
Angle between half portion is obtuse angle.
Further, the lower section of type sloping plate component is equipped with top sewage pipe, and top sewage pipe is for being discharged type sloping plate component separation
Sludge.
The beneficial effects of the present invention are: sewage enters equipment by the water inlet pipe of anaerobic zone bottom, in anaerobic zone to
Upper flowing forms suspended sludge, and forms internal partial circulating to increase upward flow velocity in device external setting circulating pump, is detesting
Oxygen area top is arranged three phase separator and separates biogas, sludge and water outlet, and water is flowed up forms suspended sludge in anoxic zone
And mix well, aerated conduit component is uniformly supplied to aerobic zone and is sufficiently stirred, and dirty by the dynamic a part of air lift zone
Mudflow is through type sloping plate component and packing layer, and another part sludge is back to anoxic zone bottom by central tube, in anoxic zone and aerobic zone
Between form reflux cycle, and reflux ratio can arbitrarily be adjusted using regurgitant volume adjuster on central tube, solve existing skill
Process equipment is more in art, cumbersome, takes up a large area, and the structure of type sloping plate component is simple, solves filtration device structure complexity
The problem of.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram of vertical internal-circulating integrated sewage treating apparatus of the present invention.
In figure, 1- water inlet pipe；2- circulating pump；3- three phase separator；4- biogas pipe；The anoxic zone 5-；The online DO instrument of 6-；In 7-
Heart cylinder；8- air inlet pipe；The aerobic zone 9-；10- biologic packing material；11- air lift area；12- regurgitant volume adjuster；Sewage pipe in the middle part of 13-；
The anaerobic zone 14-；15- bottom blow-down pipe；16- type sloping plate component；17- packing layer；18- outlet pipe；Sludge pipe at the top of 19-；20- aeration
Pipe.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1, the invention proposes a kind of vertical internal-circulating integrated sewage treating apparatus, including from top to down according to
The top of air lift area 11, aerobic zone 9, anoxic zone 5 and the anaerobic zone 14 of secondary setting, air lift area 11 is opening, for releasing gas,
Air lift area 11 is equipped with regurgitant volume adjuster 12, and the lower section of regurgitant volume adjuster 12 is equipped with central tube 7, is adjusted by adjusting regurgitant volume
The height of device 12, the flow of adjustable central tube 7.Central tube 7 extends downward into anoxic zone 5 from air lift area 11, and central tube 7 is
Cylindrical shape, the upper and lower part of central tube 7 are equipped with horn mouth, and upper part is connected with regurgitant volume adjuster 12, reflux
The lower section for measuring adjuster 12 is bullet, the lower section of regurgitant volume adjuster 12 tune by way of blocking 7 upper opening of central tube
The flow of central tube 7 is saved, aerobic zone 9 is equipped with biologic packing material 10, and biologic packing material adheres to equipped with microorganism, and microorganism is to aerobic zone
9 sludge is degraded and is handled, and the lower section of aerobic zone 9 is equipped with aerated conduit component, and aerated conduit component is used for at sewage
Air-blowing inside equipment is managed, supplements the oxygen in aerobic zone 9, and be able to drive sludge and flow up, aerated conduit component blasts
Gas mixing sludge, gas mud mixture flows up.Water inlet pipe 1 is equipped at the bottom of anaerobic zone 14, water inlet pipe 1 is used for
Water is supplemented inside to sewage disposal device.Three phase separator 3 is equipped between anaerobic zone 14 and anoxic zone 5, three phase separator 3 is by natural pond
Gas, sludge and water outlet separate, and water, which is flowed up, to be formed suspended sludge and mixed well in anoxic zone, and aerated conduit component is become better
Oxygen area uniformly supplies and sufficiently stirs.Circulating pump 2 is equipped between three phase separator 3 and the bottom of anaerobic zone 14, circulating pump 2 is used for
The lower part that sewage imports anaerobic zone 14 is extracted from the bottom of three phase separator 3, circulating pump 2 can reuse sewage.Air lift
The two sides in area 11 are equipped with the type sloping plate component 16 for removing sludge, and the top of type sloping plate component 16 is equipped with packing layer 17.It is a part of dirty
Mudflow is through type sloping plate component and packing layer, and another part sludge is back to anoxic zone bottom by central tube, in anoxic zone and aerobic zone
Between form reflux cycle, packing layer 17 can further remove suspended matter therein to the sewage after type sloping plate component, warp
After crossing type sloping plate component 16 and packing layer 17, the water overflowed from packing layer 17 can be discharged.
The bottom of anaerobic zone 14 is equipped with bottom blow-down pipe 15, and middle part sewage pipe 13 is equipped between anaerobic zone 14 and anoxic zone 5.
13 collective effect of bottom blow-down pipe 15 and middle part sewage pipe excludes the sludge in anaerobic zone 14 completely, and middle part sewage pipe 13 is also
The sludge of anoxic zone 5 can be used to be discharged.
The invention also includes tank bodies, and tank body is integrally cylindrical, and top of the tank is air lift area 11, this part is equipped with necking
Shape, air lift area 11, aerobic zone 9, anoxic zone 5 and anaerobic zone 14 are in tank body, and three phase separator 3 is also in tank body, tank
Body is equipped with one for exporting the biogas pipe 4 of biogas at position corresponding with three phase separator 3.Biogas pipe 4 is in tank body
Outside.
The lower section of packing layer 17 is equipped with aeration tube 20, and for washing away packing layer 17, the top of packing layer 17 connects aeration tube 20
The position of nearly top of the tank is equipped with outlet pipe 18, and by type sloping plate component 16 and packing layer 17, treated for being discharged for outlet pipe 18
Sewage.
The lower section of type sloping plate component 16 is equipped with top sludge pipe 19, and top sludge pipe 19 is used to be discharged the separation of type sloping plate component 16
Sludge.
Aerated conduit component includes the air inlet pipe 8 for being located at 9 lower section of aerobic zone.Air inlet pipe 8 connects aerator, and aerator passes through
Air inlet pipe 8 imports air to aerobic zone 9.
5 side of anoxic zone is equipped with online DO instrument 6.
Type sloping plate component 16 includes several parallel inclined plates, and inclined plate includes the upper half and lower half, the upper half and lower half it
Between angle be obtuse angle.Specifically, in the present embodiment, type sloping plate component 16 includes three parallel inclined plates, and respectively first tiltedly
Plate, the second inclined plate and third inclined plate, the first inclined plate, the second inclined plate and third inclined plate are umbrella.Specifically, the first inclined plate,
Two inclined plates and third inclined plate can be used metal and be made.It is upwardly extended at the top of outermost third inclined plate, packing layer 17 is arranged
In the two sides of third inclined plate.Haydite is equipped in packing layer 17.
Air lift area 11 is located at tapered portion and contracting including tapered portion and the choke being located above tapered portion, type sloping plate component 16
The two sides of oral area, sewage are successively flowed through from tapered portion and choke, and a part enters central tube 7, and another part enters inclined plate group
Part 16, type sloping plate component 16 separate sludge from sewage, and the sewage after removing sludge passes through packing layer 17.
Sewage disposal device proposed by the present invention is at vertical structure, with existing horizontal sewage disposal device or sewage
Reason pond is compared, and occupied area is small, and projected area is small, is the 1/3-1/5 of the occupied area of conventional sewage disposal device.
The present invention both can handle sanitary sewage, also can handle trade effluent, and compatibility is strong, be capable of handling different give up
Water.
The amount of the biologic packing material that the present invention is arranged in aerobic zone, microorganism is bigger, can be improved sewage treating efficiency.But
Biologic packing material cannot handle sludge, and type sloping plate component 16 can effectively remove sludge, moreover it is possible to be carried out further by packing layer 17
Sewage treatment.
In the present invention, it is 2-3m/s, air lift area that the flow velocity of air inlet pipe air inlet, which is the flow velocity of 12-15m/s water inlet water inlet tube,
In, the flow velocity that gas and water rise is about 6-8m/s, because the flow velocity of air inlet pipe air inlet is greater than the water inlet flow velocity of water inlet pipe, because
This, anoxic zone can become negative pressuren zone because of insufficient water, suction is generated, and the bottom of central tube is located at anoxic zone, because of negative pressure
The suction of generation can inhale the water at the top of central tube, thus circulation in being formed.I.e. the present invention is to generate water using aeration to follow
Ring.
The present invention uses vertical structure, and area of section is small, so relatively existing sewage disposal device, cross sectional flow rate are opposite
Fastly.
Intelligent control may be implemented in the present invention, operating status can be monitored by mobile phone or computer remote, if there is event
Barrier, can be to sending short message by mobile phone.
Operation of the present invention is fairly simple, it is only necessary to set parameter, can voluntarily run.
Present invention process process brief description: sewage is entered inside the present invention by the water inlet pipe 1 of 14 bottom of anaerobic zone
Anaerobic zone 14, sewage flow up to form suspended sludge in anaerobic zone 14, and set outside tank body to increase upward flow velocity
It sets circulating pump 2 and forms internal partial circulating, setting three phase separator 3 separates biogas, sludge and water on 14 top of anaerobic zone, three-phase
3 top of separator is anoxic zone 5, and water, which is flowed up, to be formed suspended sludge in anoxic zone 5 and mix well, 5 top of anoxic zone
For aerobic zone 9, biologic packing material 10 is set in aerobic zone 9,10 lower part of biologic packing material setting aerated conduit component is supplied by outer fan
Entering from air inlet pipe 8, aerated conduit component is uniformly supplied to aerobic zone 9 and is sufficiently stirred, make it through biologic packing material 10 upwards,
And air lift area 11 is formed by the constriction on 9 top of aerobic zone, drives a part of sludge to flow to central tube 7 and is back to anoxic
5 bottom of area, forms reflux cycle between anoxic zone 5 and aerobic zone 9, and another part sludge flows through type sloping plate component 16 and filler
Layer, is discharged through outlet pipe 18, is set below type sloping plate component 16 by top sludge pipe 19, sludge is discharged.And it is used on central tube 7
Regurgitant volume adjuster 12 can arbitrarily adjust reflux ratio, and gas is discharged by top of the tank, in 5 bottom three phase separation of anoxic zone
Setting middle part sewage pipe 13 on device 3, is arranged bottom blow-down pipe 15 in 14 bottom of anaerobic zone and can be used as sewage draining exit.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of vertical internal-circulating integrated sewage treating apparatus, it is characterised in that: including the air lift set gradually from top to down
Area (11), aerobic zone (9), anoxic zone (5) and anaerobic zone (14), the air lift area (11) are equipped with regurgitant volume adjuster (12), institute
The lower section for stating regurgitant volume adjuster (12) is equipped with central tube (7), and the central tube (7) extends downward into from the air lift area (11)
The anoxic zone (5)；The aerobic zone (9) is equipped with biologic packing material (10), and aerated conduit group is equipped with below the aerobic zone (9)
Part is equipped with water inlet pipe (1) at the bottom of the anaerobic zone (14), is equipped between the anaerobic zone (14) and the anoxic zone (5)
Three phase separator (3) is equipped with circulating pump (2) between the three phase separator (3) and the bottom of the anaerobic zone (14), the gas
The two sides in area (11) are mentioned equipped with the type sloping plate component (16) for removing sludge, the top of the type sloping plate component (16) is equipped with packing layer
(17)。
2. a kind of vertical internal-circulating integrated sewage treating apparatus according to claim 1, it is characterised in that: the anaerobism
The bottom in area (14) is equipped with bottom blow-down pipe (15), and middle part blowdown is equipped between the anaerobic zone (14) and the anoxic zone (5)
It manages (13).
3. a kind of vertical internal-circulating integrated sewage treating apparatus according to claim 1 or 2, it is characterised in that: also wrap
Tank body is included, the air lift area (11), aerobic zone (9), anoxic zone (5) and anaerobic zone (14) are in the tank body, and described three
Phase separator (3) is also in the tank body, and the tank body is equipped with one at position corresponding with the three phase separator (3)
A biogas pipe (4) for being used to export biogas.
4. a kind of vertical internal-circulating integrated sewage treating apparatus according to claim 3, it is characterised in that: the air lift
Area (11) includes tapered portion and the choke that is located above the tapered portion, and the type sloping plate component (16) is located at the tapered portion
With the two sides of the choke, sewage is successively flowed through from the tapered portion and the choke, and a part enters the central tube
(7), another part enters the type sloping plate component (16), and the type sloping plate component (16) separates sludge from sewage, removes sludge
Sewage afterwards passes through described filler layer (17).
5. a kind of vertical internal-circulating integrated sewage treating apparatus according to claim 4, it is characterised in that: the filler
The lower section of layer (17) is equipped with aeration tube (20), and the aeration tube (20) is for washing away described filler layer (17), described filler layer
(17) top is equipped with outlet pipe (18) close to the position of the top of the tank, and the outlet pipe (18) is for being discharged described in process
Type sloping plate component (16) and described filler layer (17) treated sewage.
6. a kind of vertical internal-circulating integrated sewage treating apparatus according to claim 1, it is characterised in that: the aeration
Conduit assembly includes the admission line component (8) being located at below the aerobic zone (9).
7. a kind of vertical internal-circulating integrated sewage treating apparatus according to claim 1, it is characterised in that: the anoxic
Area (5) side is equipped with online DO instrument (6).
8. a kind of vertical internal-circulating integrated sewage treating apparatus according to claim 1, it is characterised in that: the inclined plate
Component (16) includes several parallel inclined plates, and the inclined plate includes the upper half and lower half, between the upper half and lower half
Angle be obtuse angle.
9. a kind of vertical internal-circulating integrated sewage treating apparatus according to claim 1, it is characterised in that: the inclined plate
The lower section of component (16) is equipped with top sludge pipe (19), and the top sludge pipe (19) is for being discharged the type sloping plate component (16) point
From sludge.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610601340.9A CN106242050B (en) | 2016-07-27 | 2016-07-27 | A kind of vertical internal-circulating integrated sewage treating apparatus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610601340.9A CN106242050B (en) | 2016-07-27 | 2016-07-27 | A kind of vertical internal-circulating integrated sewage treating apparatus |
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| CN106242050A CN106242050A (en) | 2016-12-21 |
| CN106242050B true CN106242050B (en) | 2019-04-02 |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106865765B (en) * | 2017-03-06 | 2023-05-26 | 肇庆市鹏凯环保装备有限公司 | Vertical micro-power self-circulation efficient sewage treatment equipment |
| CN107827236B (en) * | 2017-11-24 | 2018-10-19 | 南通大学 | Integrated form sewage disposal device |
| CN108928922A (en) * | 2018-07-19 | 2018-12-04 | 池州学院 | One kind is unpowered interior circulation biochemical reaction precipitator tower and its workflow |
| CN108892242A (en) * | 2018-09-10 | 2018-11-27 | 佛山市碧沃丰生物科技股份有限公司 | A kind of AAO process system |
| CN109574406A (en) * | 2018-12-30 | 2019-04-05 | 广州市广深环保科技有限公司 | A kind of MBR integration biochemical treatment equipment |
| CN110776099B (en) | 2019-08-30 | 2021-11-23 | 中清生态环境(宁波)有限公司 | Self-circulation efficient biological denitrification device and working method thereof |
| CN110668568B (en) * | 2019-11-04 | 2024-01-30 | 西安建筑科技大学 | Multifunctional partitioned denitrification integrated method and equipment |
| CN111233147A (en) * | 2020-01-16 | 2020-06-05 | 四川信步达信息技术咨询有限公司 | Method and system for increasing carbon strengthening effect in sewage treatment |
| CN111995054A (en) * | 2020-09-14 | 2020-11-27 | 兰州交通大学 | Sewage treatment device |
| CN113968623A (en) * | 2021-06-25 | 2022-01-25 | 北京绿恒科技有限公司 | Inverted double-circulation micro-power aerobic granular sludge water treatment device |
| CN115304211A (en) * | 2022-06-29 | 2022-11-08 | 鹏凯环境科技股份有限公司 | Method for treating river and lake pollution point source by clear water type water ecosystem |
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| JP2544713B2 (en) * | 1988-12-27 | 1996-10-16 | 日東紡績株式会社 | Wastewater treatment equipment |
| DE102008017008A1 (en) * | 2008-04-03 | 2009-10-08 | Wolfgang Eggert | Reactor for anaerobic treatment of wastewater |
| CN202499762U (en) * | 2012-03-26 | 2012-10-24 | 山东北辰集团水务工程有限公司 | Anaerobic-aerobic integration bioreactor |
| CN204097198U (en) * | 2014-10-13 | 2015-01-14 | 杜丹 | The full-automatic unpowered sewage disposal device of buried type integrated |
| CN204490595U (en) * | 2014-12-24 | 2015-07-22 | 辽宁北方环境保护有限公司 | A kind of film bioreactor device of decelerating membrane pollution |
| CN105776759B (en) * | 2016-04-18 | 2018-11-30 | 浙江艾摩柯斯环境科技有限公司 | The efficient anaerobic iron oxidation process denitrification reactor and its method of basicity Self-controlled |
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Denomination of invention: Vertical internal-circulation integral sewage treatment apparatus Effective date of registration: 20200610 Granted publication date: 20190402 Pledgee: Guangzhou Branch of Guangzhou Bank Co.,Ltd. Pledgor: GUANGZHOU PENGKAI ENVIRONMENT TECHNOLOGY Co.,Ltd. Registration number: Y2020980002964 |
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Date of cancellation: 20211112 Granted publication date: 20190402 Pledgee: Guangzhou Branch of Guangzhou Bank Co.,Ltd. Pledgor: GUANGZHOU PENGKAI ENVIRONMENT TECHNOLOGY CO.,LTD. Registration number: Y2020980002964 |
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