CN217103235U - Device for rapidly starting one-section type continuous flow short-cut nitrification-anaerobic ammonia oxidation process - Google Patents
Device for rapidly starting one-section type continuous flow short-cut nitrification-anaerobic ammonia oxidation process Download PDFInfo
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Abstract
The utility model discloses a device for quickly starting a one-section type continuous flow shortcut nitrification-anaerobic ammonia oxidation process, relating to the technical field of water treatment equipment. The device comprises a first reaction vessel, a short-cut nitrification transfer reaction vessel and a second reaction vessel; an aeration hose and a short-cut nitrification total-mixing flow reactor are arranged in the first reaction container, and the short-cut nitrification total-mixing flow reactor comprises an aeration membrane; the aeration membrane is connected with a first air inlet pipe and an air outlet pipe, the first air inlet pipe is connected with the membrane fan, the first gas flowmeter and the first pressure transmitter, and the air outlet pipe is provided with a second gas flowmeter, a second pressure transmitter and a tail gas concentration tester; the aeration hose is connected with a second air inlet pipe, and the second air inlet pipe is connected with an air stirring fan and a third gas flowmeter; sludge reflux pumps are arranged between the short-cut nitrification transfer reaction container and the first reaction container as well as between the second reaction container and the first reaction container. The device realizes the high-efficient removal of ammonia nitrogen and total nitrogen through a one-stage type short-cut nitrification-anaerobic ammonia oxidation reaction.
Description
Technical Field
The utility model relates to a water treatment facilities technical field especially relates to a device of quick start-up segmentation continuous flow shortcut nitrification-anaerobic ammonia oxidation technology.
Background
The sewage treatment industry is considered to be a high-energy-consumption industry, and is undergoing the promotion and evolution from ' transfer of energy consumption and pollution to ' low-carbon emission reduction and high-efficiency energy conservation ' under the new background of implementing a ' double-carbon ' target strategy in China, so that the sewage treatment industry realizes the systematic change through the research and development, application, energy conservation and efficiency improvement of a new technical process.
The novel shortcut nitrification-anaerobic ammonia oxidation technology is the most economical and efficient biological denitrification treatment novel technology at present, and the current difficulty of the technology lies in that: the culture period of the anaerobic ammonia oxidizing bacteria is long, so that the starting time of the whole reaction system is long; an acidic agent is required to be added for stabilizing the pH value in the mixed solution when the anaerobic ammonia oxidation reactor in the sectional type generates alkalinity, so that the operation cost is increased; the sectional type reaction device occupies a large area, and the monitoring points and control of the sectional type reaction device have high technical requirements on operators; the short-cut nitration reaction in the sectional reaction apparatus produces NO 2 Accumulation of-N, high concentration of NO 2 N readily inhibits the activity of anammox bacteria, resulting in a breakdown of the reaction system.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the purpose of the utility model is realized through following technical scheme:
the device for rapidly starting the one-stage continuous flow shortcut nitrification-anaerobic ammonia oxidation process comprises a first reaction container, a shortcut nitrification transfer reaction container and a second reaction container; the first reaction vessel is communicated with the short-cut nitrification transfer reaction vessel, and the short-cut nitrification transfer reaction vessel is communicated with the second reaction vessel;
an aeration hose and a short-cut nitrification total mixed flow reactor (CSTR) are arranged in the first reaction container, the short-cut nitrification total mixed flow reactor comprises an aeration film and an aeration film fixing frame, the aeration film is fixed on the aeration film fixing frame, and the aeration hose is positioned below the aeration film fixing frame; the aeration membrane is connected with a first air inlet pipe and an air outlet pipe, the first air inlet pipe is connected with the membrane fan, the first air inlet pipe is provided with a first gas flowmeter and a first pressure transmitter, and the air outlet pipe is provided with a second gas flowmeter, a second pressure transmitter and a tail gas concentration tester; the aeration hose is connected with a second air inlet pipe, the second air inlet pipe is connected with an air stirring fan, and a third air flow meter is arranged on the second air inlet pipe;
the short-cut nitrification transfer reaction container and the second reaction container are both provided with sludge return pipes connected to the first reaction container, and sludge return pumps are arranged on the sludge return pipes.
The full mixing reactor (CSTR) is a tank reactor with stirring function, and the purpose of full mixing stirring is to make the mixed liquid system uniform, so as to facilitate the uniformity of the reaction. And a dosing box is further included, a dosing pipe is arranged between the dosing box and the second reaction container, and a dosing pump is arranged on the dosing pipe.
Furthermore, the short-cut nitration reaction container, the second reaction container and the dosing tank are all provided with a stirrer.
Furthermore, the first reaction vessel is also provided with a dissolved oxygen tester.
Furthermore, the first reaction container is also provided with a mixed solution suspended solid concentration (MLSS) tester. The mixed liquor suspended solids concentration (MLSS), which represents the total weight of activated sludge solids contained in the mixed liquor per unit volume of the aeration tank, is usually in mg/L.
Furthermore, a first stop valve is arranged on the first air inlet pipe, a second stop valve is arranged on the air outlet pipe, and a third stop valve is arranged on the second air inlet pipe.
Further, a water inlet is formed in the bottom of the first reaction container; the second reaction vessel is provided with a sludge discharge port and a third water outlet.
Furthermore, the first reaction vessel is provided with a first manual sampling valve.
Furthermore, the second reaction vessel is provided with a second manual sampling valve.
Furthermore, a plurality of aeration membranes are arranged in the first reaction vessel, and each aeration membrane is fixed on an aeration membrane fixing frame.
The utility model discloses a device that is used for quick start one-section type continuous flow short cut to nitrify-anaerobic ammonium oxidation technology takes place one-section type short cut nitrify-anaerobic ammonium oxidation reaction and can realize that the high efficiency of ammonia nitrogen and total nitrogen is got rid of. Compared with the prior art, the method has the advantages that:
1. the device can quickly start a one-stage type short-cut nitrification-anaerobic ammonia oxidation process.
2. The oxygen utilization efficiency is high, and bubble-free aeration is carried out by utilizing the aeration membrane.
3. The method has the advantages that the pollutant removal effect is good, no carbon source is needed to be added, the total nitrogen is removed efficiently, for the high-concentration ammonia nitrogen wastewater with the inflow of 900-1200mg/L, the ammonia nitrogen removal efficiency in the one-stage short-cut nitrification-anaerobic ammonia oxidation device is more than 95%, the total nitrogen removal efficiency of the system is 85%, and the ammonia nitrogen concentration of the effluent of the system is 50 mg/L.
4. The energy consumption is low, the growth mode of the biological membrane can ensure that no sludge expansion risk exists during the operation, and meanwhile, the coupling process of the shortcut nitrification and the membrane aeration saves the aeration amount by more than 60 percent, reduces the sludge yield by 30 to 40 percent, and reduces the subsequent sludge treatment cost.
5. The occupied area and the investment cost are saved, and the one-step continuous flow short-cut nitrification-anaerobic ammonia oxidation device occupies a small area compared with a two-section device.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.
Fig. 1 is a schematic structural diagram of an apparatus for rapidly starting a one-stage continuous flow shortcut nitrification-anammox process according to an embodiment of the present invention.
The designations in the drawings illustrate:
1-a water inlet; 2, aerating by a hose; 3-aeration membrane fixing frame; 4-an aerated film; 5-a membrane fan; 6-a first stop valve; 7-a first pressure transmitter; 8-a first gas flow meter; 9-a gas stirring fan; 10-a third stop valve; 11-a third flow meter; 12-a second stop valve; 13-a second gas flow meter; 14-a second pressure transmitter; 15-tail gas concentration measuring instrument; 16-a first water outlet; 17-a second sludge recirculation pump; 18-dissolved oxygen meter; 19-mixed liquid suspended solid concentration tester; 20-a first manual sampling valve; 21-a second manual sampling valve; 22-second reaction vessel agitator; 23-a sludge discharge port; 24-a third water outlet; 25-a dosing pump; 26-dosing tank mixer; 27-a first reaction vessel; 28-a second reaction vessel; 29-a dosing box; 30-short distance nitration transfer reaction vessel; 301-a first sludge recirculation pump; 302-short-cut nitrification transfer reaction vessel stirrer; 303-second water outlet.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in the specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
The terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Referring to fig. 1, fig. 1 shows an apparatus for rapidly starting a one-stage continuous flow shortcut nitrification-anammox process according to an embodiment of the present invention, which includes a first reaction vessel 27, a shortcut nitrification transfer reaction vessel 30, a second reaction vessel 28, and a dosing tank 29. The bottom of the first reaction vessel is provided with a water inlet 1, and sewage to be treated enters the first reaction vessel 27 from the water inlet 1; the first manual sampling valve 20 is disposed in the middle of the first reaction container 27, and can be used for manually sampling the sewage in the first reaction container 27. The first water outlet 16 is arranged at the upper part of the first reaction container 27, the first water outlet 16 is communicated with the short-cut nitrification transfer reaction container 30, and the sewage treated in the first reaction container 27 can overflow to the short-cut nitrification transfer reaction container 30 through the first water outlet 16. The upper part of the short-cut nitrification transfer container 30 is provided with a second water outlet 303, the second water outlet 303 is communicated with the second reaction container 28, and the sewage treated in the short-cut nitrification transfer container 30 can overflow to the second reaction container 28 through the second water outlet 303.
The upper part of the second reaction container 28 is provided with a third water outlet 24 for discharging the sewage treated by the device. The second reaction container 28 is connected with a dosing tank 29, a dosing pipeline is arranged between the second reaction container 28 and the dosing tank 29 and connected with the bottom of the second reaction container 28 and the bottom of the dosing tank 29, a dosing pump 25 is arranged on the dosing pipeline, and the dosing pump 25 can pump the medicament in the dosing tank 29 to the second reaction container 28.
A sludge return pipe is arranged between the first reaction container 27 and the short-cut nitrification transfer reaction container 30 and connected with the bottom of the first reaction container 27 and the bottom of the short-cut nitrification transfer reaction container 30, a first sludge return pump 301 is arranged on the sludge return pipe, and the first sludge return pump 301 can pump sludge deposited in the short-cut nitrification transfer reaction container 30 to the first reaction container 27. A sludge return pipe is arranged between the second reaction container 28 and the first reaction container 27 and is connected with the bottom of the second reaction container 28 and the bottom of the first reaction container 27, a second sludge return pump 17 is arranged on the sludge return pipe, and the second sludge return pump 17 can pump sludge deposited in the second reaction container 28 to the first reaction container 27. The middle part of the second reaction vessel 28 is provided with a second manual sampling valve 21 which can be used for manually sampling the sewage in the second reaction vessel 28. The bottom of the second reaction vessel 28 is provided with a sludge discharge port 23 which can be used for discharging sludge deposited in the second reaction vessel 28;
the first reaction container 27 is also internally provided with a dissolved oxygen determinator 18 and a mixed liquid suspended solid concentration determinator 19; the dissolved oxygen meter 18 is used for measuring the oxygen content in the first reaction vessel 27, and the mixed liquor suspended solid concentration meter 19 is used for measuring the concentration of activated sludge (containing NOB nitrite oxidizing bacteria, AOB ammonia oxidizing bacteria and anaerobic ammonia oxidizing bacteria) 27 in the first reaction vessel.
The first reaction vessel 27 is also internally provided with a short-cut nitrification total mixed flow reactor and an aeration hose 2, the short-cut nitrification total mixed flow reactor comprises a plurality of aeration membranes 4 and an aeration membrane fixing frame 3, each aeration membrane 4 is fixed on the aeration membrane fixing frame 3, and the aeration hose 2 is positioned below the aeration membrane fixing frame 3. The aeration membrane 4 is tubular and is connected with a first air inlet pipe and an air outlet pipe. The first air inlet pipe is connected with the membrane fan 5, and the membrane fan 5 sends air to the aeration membrane 4 through the first air inlet pipe and then discharges the air through the air outlet pipe. Be equipped with first check valve 6, first pressure transmitter 7 and first gas flowmeter 8 on the first intake pipe, first check valve 6 is used for controlling the switch of admitting air of first intake pipe, and first pressure transmitter 7 is used for controlling the admission pressure of first intake pipe, and first gas flowmeter 8 is used for showing the inflow of first intake pipe. Be equipped with second stop valve 12, second gas flowmeter 13, second pressure transmitter 14 and tail gas concentration apparatus 15 on the outlet duct, second stop valve 12 is used for controlling the switch of giving vent to anger of outlet duct, and second gas flowmeter 13 is used for showing the flow of giving vent to anger of outlet duct, and second pressure transmitter 14 is used for controlling the pressure of giving vent to anger of outlet duct, and tail gas concentration 15 apparatus is used for showing the concentration of giving vent to anger of outlet duct. The aeration hose 2 is connected with a second air inlet pipe, the second air inlet pipe is connected with an air stirring fan 9, and the air stirring fan 9 sends air into the first reaction container 27 through the second air inlet pipe. The aeration hose 2 is provided with a third stop valve 10 and a third gas flow meter 11, the third stop valve 10 is used for controlling an air inlet switch of the second air inlet pipe, and the third gas flow meter 11 is used for displaying the air inlet flow of the second air inlet pipe.
The short-cut nitrification transfer reaction container 30, the second reaction container 28 and the dosing tank 29 are all provided with a stirrer. The short-cut nitrification transfer reaction container stirrer is used for stirring the mixed liquid in the short-cut nitrification transfer reaction container to ensure that the mixed liquid is fully contacted for reaction. The second reaction vessel stirrer 22 is used to stir the mixed solution in the second reaction vessel 28 so that the mixed solution is sufficiently contacted to carry out the reaction. The chemical tank stirrer 26 stirs the chemical in the chemical tank 29.
A method for rapidly starting a one-stage continuous flow shortcut nitrification-anaerobic ammonia oxidation process is completed based on the device. The method comprises two stages, wherein the first stage is the process start of the two-stage partial nitrification CSTR combined anaerobic ammonia oxidation SBR, and the second stage is the operation of the one-stage continuous flow partial nitrification-anaerobic ammonia oxidation process under a stable state.
In the starting stage, sewage containing high ammonia nitrogen concentration enters the first reaction vessel 27 from the water inlet 1, 3500-4000mg/L activated sludge (containing NOB nitrite oxidizing bacteria and AOB ammonia oxidizing bacteria) is inoculated in the first reaction vessel 27, the membrane fan 5 and the air stirring fan 9 are started, the first pressure transmitter 7 is adjusted to control the air inlet pressure of the aeration membrane 4 in the stage to be 250mbar, so that the dissolved oxygen concentration in the mixed liquid in the first reaction vessel 27 is maintained below 0.2mg/L, and the aeration membrane 4 is subjected to bubble-free aeration. The gas stirring fan 9, the membrane fan 5 and the dissolved oxygen measuring instrument 18 work together to control the dissolved oxygen concentration in the first reaction vessel 27, so that the growth of NOB nitrite oxidizing bacteria is inhibited, AOB ammonia oxidizing bacteria become dominant bacteria, and the short-cut nitration reaction is rapidly completed in the first reaction vessel 27.
The mixed liquor in the first reaction container 27 enters the short-cut nitrification transfer reaction container 30 through the water discharged from the first water outlet 16, after the activated sludge in the mixed liquor naturally settles in the short-cut nitrification transfer reaction container 30, the activated sludge is pumped to the first reaction container through the first sludge reflux pump 301, the concentration of the mixed liquor suspended solid in the stage is measured by the mixed liquor suspended solid concentration measuring instrument 19 to be 3000mg/L, the concentration of oxygen in the tail gas is monitored by the tail gas concentration measuring instrument 15, when the concentration of oxygen in the tail gas reaches an oxygen concentration value of 17-18%, the growth of microorganisms in the aeration membrane 4 is considered to reach a stable state, and the rapid biofilm formation of the microorganisms in the first reaction container 27 can be realized. After this stage, the first sludge recirculation pump 301 is adjusted to control the sludge recirculation, and the MLSS in the first reaction vessel 27 is gradually reduced, so that the AOB ammonia oxidizing bacteria on the aeration membrane 4 can complete the function of short-cut nitrification, and the start-up of the first reaction vessel 27 is completed.
After the first reaction vessel 27 is started, in the effluent of the short nitrate transfer reaction vessel 30, sewage containing 45-50% of nitrite nitrogen and 45-50% of residual ammonia nitrogen enters the second reaction vessel 28, and anaerobic ammonia oxidation sludge (3500-4000mg/L) is inoculated to the second reaction vessel 28 for denitrification reaction of anaerobic ammonia oxidation. The second reaction vessel 28 adopts an SBR intermittent operation mode (30 min of water inlet, 2h of anoxic reaction, 20min of sedimentation and 10min of water outlet), and the transition of the reaction device to a stable state stage is completed after the biochemical reaction in the second reaction vessel 28 is stable.
In a steady state stage, the gas stirring fan 9 is turned off, the anammox sludge in the mixed liquor in the second reaction vessel 28 is pumped to the first reaction vessel 27 through the second sludge reflux pump 17, the inside of the first reaction vessel 27 is in an anoxic environment and is suitable for the growth of activated sludge and anammox bacteria on the outer layer of the aeration membrane 4, the inside of the aeration membrane 4 is in an aerobic environment, the short-cut nitrification reaction mainly occurs, and part of NH4 + Oxidation of-N to NO 2 N, providing a substrate for anoxic bacteria on the outer layer of the aeration membrane 4, and carrying out a one-stage shortcut nitrification-anaerobic ammonia oxidation reaction in the first reaction vessel 27, namely completing biological denitrification in the first reaction vessel 27 without adding an external carbon source.
The device is suitable for low C/N ratio and high NH4 in sewage + And treating high-concentration wastewater such as wastewater of N pollutants, landfill leachate wastewater, anaerobic digestion biogas slurry, coking wastewater, kitchen wastewater, slaughter wastewater and the like.
For high-concentration ammonia nitrogen wastewater with inlet water of 900-1200mg/L, in the one-stage shortcut nitrification-anaerobic ammonia oxidation device, the ammonia nitrogen removal efficiency reaches over 95 percent, the total nitrogen removal efficiency of the system is 85 percent, and the ammonia nitrogen concentration of the outlet water of the system is 50 mg/L.
The device can quickly start a one-stage type short-cut nitrification-anaerobic ammonia oxidation process; bubble-free aeration is realized, and the utilization efficiency of oxygen is high; the method has low energy consumption and high efficiency, does not need an additional carbon source, can realize the high-efficiency removal of total nitrogen, simultaneously saves the aeration amount by more than 60 percent by the coupling process of short-cut nitrification and membrane aeration, and reduces the sludge yield by 30 to 40 percent; the growth mode of the biological membrane can ensure that no risk of sludge expansion exists during operation, the sludge yield is low, and the subsequent sludge treatment cost is reduced; compared with a two-section device, the one-step continuous flow short-cut nitrification-anaerobic ammonia oxidation device occupies a small area and saves investment cost.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. An apparatus for rapidly starting a one-stage continuous flow shortcut nitrification-anammox process, the apparatus comprising: a first reaction vessel, a short-cut nitrification transfer reaction vessel and a second reaction vessel; the first reaction vessel is communicated with the short-cut nitrification transfer reaction vessel, and the short-cut nitrification transfer reaction vessel is communicated with the second reaction vessel;
an aeration hose and a short-cut nitrification total mixed flow reactor are arranged in the first reaction container, the short-cut nitrification total mixed flow reactor comprises an aeration membrane and an aeration membrane fixing frame, the aeration membrane is fixed on the aeration membrane fixing frame, and the aeration hose is positioned below the aeration membrane fixing frame; the aeration membrane is connected with a first air inlet pipe and an air outlet pipe, the first air inlet pipe is connected with the membrane fan, the first air inlet pipe is provided with a first gas flowmeter and a first pressure transmitter, and the air outlet pipe is provided with a second gas flowmeter, a second pressure transmitter and a tail gas concentration tester; the aeration hose is connected with a second air inlet pipe, the second air inlet pipe is connected with an air stirring fan, and a third air flow meter is arranged on the second air inlet pipe;
the short-cut nitrification transfer reaction container and the second reaction container are both provided with sludge return pipes connected to the first reaction container, and sludge return pumps are arranged on the sludge return pipes.
2. The apparatus according to claim 1, further comprising a dosing tank, wherein a dosing pump is disposed on the dosing tank, and a dosing pipe is disposed between the dosing tank and the second reaction vessel.
3. The apparatus for rapidly starting the one-stage continuous flow shortcut nitrification-anaerobic ammonia oxidation process according to claim 2, wherein the shortcut nitrification transfer reaction vessel, the second reaction vessel and the dosing tank are provided with stirrers.
4. The apparatus for rapidly starting the one-stage continuous flow nitrification-anaerobic ammonia oxidation process according to claim 3, wherein the first reaction vessel is further provided with a dissolved oxygen meter.
5. The apparatus according to claim 4, wherein the first reaction vessel is further provided with a mixed liquor suspended solids concentration meter.
6. The apparatus according to claim 5, wherein the first gas inlet pipe is provided with a first stop valve, the gas outlet pipe is provided with a second stop valve, and the second gas inlet pipe is provided with a third stop valve.
7. The apparatus for rapidly starting the one-stage continuous flow shortcut nitrification-anaerobic ammonia oxidation process according to claim 6, wherein the bottom of the first reaction vessel is provided with a water inlet; the second reaction vessel is provided with a sludge discharge port and a third water outlet.
8. The apparatus according to claim 7, wherein the first reaction vessel is provided with a first manual sampling valve.
9. The apparatus according to claim 8, wherein the second reaction vessel is provided with a second manual sampling valve.
10. The apparatus according to claim 9, wherein a plurality of aeration membranes are disposed in the first reaction vessel, and each aeration membrane is fixed on an aeration membrane fixing frame.
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| CN202123334402.XU CN217103235U (en) | 2021-12-28 | 2021-12-28 | Device for rapidly starting one-section type continuous flow short-cut nitrification-anaerobic ammonia oxidation process |
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Address after: 518000 j395, floor 3, port building, maritime center, No. 59, Linhai Avenue, Nanshan street, Qianhai Shenzhen Hong Kong cooperation zone, Shenzhen, Guangdong Patentee after: China Resources Environmental Protection Applied Technology Research (Shenzhen) Co.,Ltd. Address before: 518000 Room 201, building A, No. 1, Qian Wan Road, Qianhai Shenzhen Hong Kong cooperation zone, Shenzhen, Guangdong (Shenzhen Qianhai business secretary Co., Ltd.) Patentee before: Shenzhen runke environmental protection application technology research Co.,Ltd. |
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