CN210030343U - Sewage online monitoring water supply and drainage device - Google Patents
Sewage online monitoring water supply and drainage device Download PDFInfo
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- CN210030343U CN210030343U CN201920868457.2U CN201920868457U CN210030343U CN 210030343 U CN210030343 U CN 210030343U CN 201920868457 U CN201920868457 U CN 201920868457U CN 210030343 U CN210030343 U CN 210030343U
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Abstract
The utility model belongs to the technical field of sewage treatment and monitoring, in particular to a sewage on-line monitoring water supply and drainage device, which comprises a primary sedimentation tank, an aeration tank, a sedimentation tank, a disinfection tank and a detection tank, wherein the primary sedimentation tank is connected with a filter fence net, a first water pumping pipe and a first water pumping pump are arranged between the primary sedimentation tank and the aeration tank, the aeration tank is provided with an aeration pipe and an air pump, the aeration tank is connected with a first stirring mechanism, a first water drainage pipe and a first electric valve are arranged between the aeration tank and the sedimentation tank, the bottom surface of the sedimentation tank is provided with a slope and a sludge collecting groove, a second water pumping pipe and a second water pumping pump are arranged between the sedimentation tank and the disinfection tank, the disinfection tank is connected with a second stirring electric mechanism, a second water drainage pipe and a second electric valve are arranged between the disinfection tank and the detection tank, the detection tank is provided with a water quality monitor and a third water drainage pipe, the sedimentation tank is connected with a first sludge drainage, the second sludge discharge pipe is connected with a second sludge pump, and one end of the second sludge discharge pipe is arranged in the aeration tank.
Description
Technical Field
The utility model belongs to the technical field of sewage treatment and monitoring, concretely relates to sewage on-line monitoring plumbing device.
Background
Sewage treatment is a process for making sewage meet the water quality requirement of draining a certain water body or reusing the sewage and purifying the sewage, and the sewage treatment is widely applied to various fields such as buildings, agriculture, traffic, energy, petrifaction, environmental protection, urban landscape, medical treatment, catering and the like, and is also increasingly used in daily life of common people; the existing sewage on-line monitoring water supply and drainage device generally comprises a primary sedimentation tank, an aeration tank, a sedimentation tank, a disinfection tank and a detection water tank, wherein larger impurities are filtered by the primary sedimentation tank, the aeration tank can lead active sludge containing aerobic bacteria in the sludge to decompose organic matters in the sewage and simultaneously generate new active sludge, the sedimentation tank is used for precipitating impurities in the sewage, the disinfection tank is used for disinfecting the sewage and finally discharges the sewage after the detection of the sludge detection water tank, however, in the prior art, part of the sludge in the sedimentation tank is pumped back to the aeration tank so as to ensure that enough active sludge is in the aeration tank to decompose the organic matters in the sewage, but the active sludge in the aeration tank can not be uniformly distributed due to natural sedimentation of the active sludge, the decomposition efficiency of the active sludge is reduced, and meanwhile, the existing sewage on-line monitoring water supply and drainage device has a complex structure, the sewage treatment efficiency is not high.
SUMMERY OF THE UTILITY MODEL
The utility model aims at: aims to provide a sewage on-line monitoring water supply and drainage device which has simple structure and convenient operation, and the activated sludge is uniformly distributed in an aeration tank to improve the decomposition efficiency, thereby improving the sewage treatment efficiency.
In order to realize the technical purpose, the utility model discloses a technical scheme as follows:
an online sewage monitoring water supply and drainage device comprises a primary sedimentation tank, an aeration tank, a sedimentation tank, a disinfection tank, a detection water tank and a controller, wherein the primary sedimentation tank, the sedimentation tank and the detection water tank are the same in depth dimension, the aeration tank and the disinfection tank are the same in depth dimension, the aeration tank is smaller than the primary sedimentation tank in depth dimension, the primary sedimentation tank is connected with a water inlet pipe, the primary sedimentation tank wall is fixedly connected with a filter fence net matched with the water inlet pipe, filter holes are formed in the periphery of the filter fence net, a first water pumping pipe is arranged between the primary sedimentation tank and the aeration tank, the first water pumping pipe is connected with a first water pumping pump, two aeration pipes are arranged at the bottom of the aeration tank in parallel, the two aeration pipes are connected with an air pump in parallel, the aeration tank wall is fixedly connected with a first mounting seat, the first mounting seat is fixedly connected with a first stirring motor, the first stirring motor is connected with a first rotating rod, the first rotating rod penetrates through the first installation seat, a plurality of first stirring blade groups are uniformly distributed on the first rotating rod, a first drainage pipe is arranged between the aeration tank and the sedimentation tank, the first drainage pipe is connected with a first electric valve, the bottom surface of the sedimentation tank is provided with a slope, the lowest part of the slope is provided with a sludge collecting groove, a second drainage pipe is arranged between the sedimentation tank and the disinfection tank, the second drainage pipe is connected with a second hand-operated water pump, the wall of the disinfection tank is fixedly connected with the second installation seat, the second installation seat is fixedly connected with a second stirring motor, the second stirring motor is connected with a second rotating rod, the second rotating rod penetrates through the second installation seat, a plurality of second stirring blade groups are uniformly distributed on the second rotating rod, and a second drainage pipe is arranged between the disinfection tank and the detection tank, the second water drainage pipe is connected with a second electric valve, a water quality monitor is arranged in the detection water tank, the detection water tank is connected with a third water drainage pipe, the sedimentation tank is connected with a first sludge discharge pipe and a second sludge discharge pipe, the tail ends of the first sludge discharge pipe and the second sludge discharge pipe are arranged in a sludge collection groove, the first sludge discharge pipe is connected with a first sludge pump, the second sludge discharge pipe is connected with a second sludge pump, the other end of the second sludge discharge pipe is arranged in the aeration tank, the other end of the second sludge discharge pipe is just opposite to a first rotating rod, a controller signal receiving end is connected with a water quality monitor signal, and a controller power output end is electrically connected with the first water suction pump, the air pump, the first stirring motor, the first electric valve, the second hand-operated water pump, the first sludge pump, the second stirring motor and the second electric valve.
By adopting the technical scheme of the utility model, the filtering fence net filters the sewage in the water inlet pipe, and prevents larger impurities from entering the sewage on-line monitoring water supply and drainage device to block the pipeline; the primary sedimentation tank is used for primary sedimentation, and the sewage in the primary sedimentation tank can be pumped into the aeration tank by opening the first water suction pump through the controller; the aeration pipes are matched with the air pump to enable the sewage in the aeration tank to continuously flush oxygen, so that organic matters in the sewage can be decomposed by the activated sludge conveniently, and the two aeration pipes are arranged to increase the contact area of the oxygen and the activated sludge and improve the decomposition efficiency; the depth of the ground of the aeration tank is higher than that of the ground of the sedimentation tank, the controller controls the first electric valve to be opened and closed, so that sewage in the aeration tank flows into the sedimentation tank under the action of gravity and is naturally precipitated, a coagulant can be added to accelerate precipitation, a slope and a sludge collection groove are arranged and matched with the washing of the first drainage pipe, so that most sludge can directly enter the sludge collection groove and is convenient to collect; the first sludge discharge pipe is matched with the first sludge pump for discharging sludge, and the second sludge discharge pipe is matched with the second sludge pump for sending part of sludge back to the aeration tank, so that the quantity of activated sludge in the aeration tank is increased, and the decomposition efficiency is improved; the first stirring motor, the first rotating rod and the first stirring blade group are matched to uniformly stir the sewage in the aeration tank, so that the activated sludge can be conveniently diffused, and meanwhile, the second sludge discharge pipe is opposite to the first rotating rod, so that the sludge discharged by the second sludge discharge pipe can flow everywhere by being fanned by the first stirring blade group, and the accumulation of the opening of the second sludge discharge pipe can be avoided; disinfect in disinfecting the pond through second drinking-water pipe and the cooperation of the second hand-operated water pump with the sewage suction, drop into corresponding disinfectant in disinfecting the pond, second agitator motor simultaneously, the even stirring of second dwang and second stirring leaf group, improve disinfection efficiency, disinfect the back, the second electric valve is opened to the controller, because disinfection pond ground degree of depth size is higher than detection pond ground degree of depth size, the sewage of handling is automatic to be entered into the detection pond and is examined, and discharge by the third drain pipe, when water quality monitoring ware detected sewage unqualifiedly, controller control second electric valve outage made sewage unable discharge, simultaneous control ware sends the police dispatch newspaper and reminds operating personnel to handle, the utility model discloses simple structure, the operation of being convenient for, activated sludge has evenly improved decomposition efficiency in the aeration tank, thereby promote the efficiency of handling sewage.
Further limiting, the bottom surface of the filtering fence net inclines from left to right from bottom to top. Such structure for great impurity is piled up at the bottommost portion, not only can prevent the big area of impurity jam mesh, still is convenient for unified collection simultaneously and filters the barrier net.
Further limited, the bottom surface of the mud collecting groove is inclined from low to high from one side to the other side of the first mud discharging pipe. The structure is convenient for sludge to be accumulated on the lower side of the first sludge discharge pipe and is convenient for collection.
Further limit, six fan blades are uniformly distributed on the first stirring blade group and the second stirring blade group. Such structure, it is rational in infrastructure, improve stirring efficiency.
Further inject, the pipeline on the left side of the first pumping pipe is provided with a first filter screen. The structure filters sewage and reduces impurities from entering the aeration tank.
Further limit, the pipeline on the left side of the second water pumping pipe is provided with a second filter screen. By adopting the structure, sewage is filtered, and sludge is reduced to enter the disinfection tank.
The utility model discloses have following beneficial characteristic for prior art:
1. the aeration tank adopts the first stirring motor for stirring, so that the activated sludge can be more uniformly distributed, and the decomposition efficiency is increased;
2. the other end of the second sludge discharge pipe is opposite to the first rotating rod, so that sludge enters the aeration tank again through the second sludge discharge pipe and is rapidly and uniformly diffused under the action of the first stirring motor;
3. two air blasting pipes are arranged to increase the contact area of oxygen and activated sludge and improve the decomposition efficiency;
4. the slope and the sludge collection groove are arranged and matched with the scouring of the first drainage pipe, so that most sludge can directly enter the sludge collection groove and is convenient to collect;
5. the depth dimension of primary sedimentation tank, sedimentation tank and detection pond is the same, and aeration tank and disinfection pond depth dimension are the same, and aeration tank depth dimension is less than the depth dimension of primary sedimentation tank for sewage can directly flow by the action of gravity when getting into the sedimentation tank and detecting the pond, reduces the use of pump, reduce cost.
Drawings
The present invention can be further illustrated by the non-limiting examples given in the accompanying drawings;
FIG. 1 is a first schematic structural view of an embodiment of an online sewage monitoring water supply and drainage device of the present invention;
FIG. 2 is a schematic structural diagram II of an embodiment of the online sewage monitoring water supply and drainage device of the present invention;
FIG. 3 is an enlarged view of the structure at A in FIG. 2;
FIG. 4 is an enlarged view of the structure at B in FIG. 2;
the main element symbols are as follows:
the device comprises a primary sedimentation tank 1, a water inlet pipe 11, a filtering barrier net 12, a first water pumping pipe 13, a first water pumping pump 14, an aeration tank 2, an aeration pipe 21, an air pump 22, a first mounting seat 23, a first stirring motor 24, a first rotating rod 25, a first stirring blade group 26, a first water discharging pipe 27, a first electric valve 28, a sedimentation tank 3, a slope 31, a sludge collecting groove 32, a second water pumping pipe 33, a second hand-operated water pump 34, a first sludge discharging pipe 35, a first sludge pumping pump 36, a second sludge discharging pipe 37, a second sludge pumping pump 38, a disinfection tank 4, a second mounting seat 41, a second stirring motor 42, a second rotating rod 43, a second stirring blade group 44, a second water discharging pipe 45, a second electric valve 46, a detection tank 5, a water quality monitor 51, a third water discharging pipe 52 and fan blades 6.
Detailed Description
In order to make the present invention better understood by those skilled in the art, the technical solutions of the present invention are further described below with reference to the accompanying drawings and examples.
As shown in figures 1-4, the utility model discloses a sewage on-line monitoring water supply and drainage device, which comprises a primary sedimentation tank 1, an aeration tank 2, a sedimentation tank 3, a disinfection tank 4, a detection water tank 5 and a controller, wherein the depth of the primary sedimentation tank 1, the depth of the sedimentation tank 3 and the depth of the detection water tank 5 are the same, the depth of the aeration tank 2 and the depth of the disinfection tank 4 are the same, the depth of the aeration tank 2 is smaller than the depth of the primary sedimentation tank 1, the primary sedimentation tank 1 is connected with a water inlet pipe 11, the wall of the primary sedimentation tank 1 is fixedly connected with a filter fence net 12 matched with the water inlet pipe 11, the periphery of the filter fence net 12 is provided with filter holes, a first water pumping pipe 13 is arranged between the primary sedimentation tank 1 and the aeration tank 2, the first water pumping pipe 13 is connected with a first water pumping pump 14, the bottom of the aeration tank 2 is provided with two aeration pipes 21 in parallel, the pipeline is connected with an air, the first installation seat 23 is fixedly connected with a first stirring motor 24, the first stirring motor 24 is connected with a first rotating rod 25, the first rotating rod 25 penetrates through the first installation seat 23, a plurality of first stirring blade groups 26 are uniformly distributed on the first rotating rod 25, a first drainage pipe 27 is arranged between the aeration tank 2 and the sedimentation tank 3, the first drainage pipe 27 is connected with a first electric valve 28, the bottom surface of the sedimentation tank 3 is provided with a slope 31, the lowest part of the slope 31 is provided with a sludge collecting groove 32, a second drainage pipe 33 is arranged between the sedimentation tank 3 and the disinfection tank 4, the second drainage pipe 33 is connected with a second hand-operated water pump 34, the wall of the disinfection tank 4 is fixedly connected with a second installation seat 41, the second installation seat 41 is fixedly connected with a second stirring motor 42, the second stirring motor 42 is connected with a second rotating rod 43, the second rotating rod 43 penetrates through the second installation seat 41, a plurality of second stirring blade groups 44 are uniformly distributed on the second, a second water discharge pipe 45 is arranged between the disinfection tank 4 and the detection tank 5, the second water discharge pipe 45 is connected with a second electric valve 46, a water quality monitor 51 is arranged in the detection tank 5, the detection tank 5 is connected with a third water discharge pipe 52, the sedimentation tank 3 is connected with a first sludge discharge pipe 35 and a second sludge discharge pipe 37, the tail ends of the first sludge discharge pipe 35 and the second sludge discharge pipe 37 are arranged in the sludge collection groove 32, the first sludge discharge pipe 35 is connected with a first sludge pump 36, the second sludge discharge pipe 37 is connected with a second sludge pump 38, the other end of the second sludge discharge pipe 37 is arranged in the aeration tank 2, the other end of the second sludge discharge pipe 37 is just opposite to the first rotating rod 25, a signal receiving end of the controller is in signal connection with the water quality monitor 51, and a power output end of the controller is in signal connection with the first water suction pump 14, the air pump 22, the first stirring motor 24, the first electric valve 28, the second water pump 34, the first sludge pump, The second agitator motor 42 is electrically connected to a second electrically operated valve 46.
By adopting the technical scheme of the utility model, the filtering fence 12 filters the sewage in the water inlet pipe 11, thereby preventing larger impurities from entering the sewage on-line monitoring water supply and drainage device to block the pipeline; the primary sedimentation tank 1 is used for primary sedimentation, and sewage in the primary sedimentation tank 1 can be pumped into the aeration tank 2 by opening the first water suction pump 14 through the controller; the aeration pipes 21 are matched with the air pump 22 to enable the sewage in the aeration tank 2 to continuously flush oxygen so as to facilitate the activated sludge to decompose organic matters in the sewage, and the two aeration pipes 21 are arranged to increase the contact area of the oxygen and the activated sludge and improve the decomposition efficiency; the ground depth of the aeration tank 2 is higher than that of the sedimentation tank 3, the controller controls the first electric valve 28 to be opened and closed, so that sewage in the aeration tank 2 can flow into the sedimentation tank 3 under the action of gravity and can be naturally precipitated, a coagulant can be added to accelerate precipitation, the slope 31 and the sludge collection tank 32 are arranged and matched with the washing of the first drainage pipe 27, and most sludge can directly enter the sludge collection tank 32 and is convenient to collect; the first sludge discharge pipe 35 is matched with the first sludge pump 36 for discharging sludge, and the second sludge discharge pipe 37 is matched with the second sludge pump 38 for sending part of sludge back to the aeration tank 2, so that the quantity of the activated sludge in the aeration tank 2 is increased, and the decomposition efficiency is improved; the first stirring motor 24, the first rotating rod 25 and the first stirring blade group 26 are matched to uniformly stir the sewage in the aeration tank 2, so that the activated sludge can be conveniently diffused, and meanwhile, the second sludge discharge pipe 37 is over against the first rotating rod 25, so that the sludge discharged from the second sludge discharge pipe 37 is fanned by the first stirring blade group 26 to flow everywhere, and the pipe orifice of the second sludge discharge pipe 37 cannot be accumulated; the sewage is pumped into the disinfection tank 4 for disinfection through the cooperation of the second pumping pipe 33 and the second hand-operated water pump 34, corresponding disinfectant is put into the disinfection tank 4, and simultaneously the second stirring motor 42, the second rotating rod 43 and the second stirring blade group 44 are uniformly stirred, so that the disinfection efficiency is improved, after disinfection, the controller opens the second electric valve 46, because the depth of the ground of the disinfection tank 4 is larger than that of the ground of the detection tank 5, the treated sewage automatically enters the detection tank 5 for inspection and is discharged by the third water discharge pipe 52, when the water quality monitor 51 detects that the sewage is unqualified, the controller controls the second electric valve 46 to be powered off so that the sewage cannot be discharged, while controller sends out the police dispatch newspaper and reminds operating personnel to handle, the utility model discloses simple structure, the operation of being convenient for, activated sludge distributes in the aeration tank and has evenly improved decomposition efficiency to promote the efficiency of handling sewage.
Further limiting, the bottom surface of the filtering fence 12 is inclined from left to right and from bottom to top. By adopting the structure, larger impurities are accumulated at the bottommost part, so that the large-area blockage of the meshes by the impurities can be prevented, and the uniform collection and filtration barrier net 12 is facilitated.
Further defined, the bottom surface of the mud trough 32 is inclined from side to side from the first mud pipe 35. With such a structure, the sludge can be conveniently accumulated on the lower side of the first sludge discharge pipe 35, and the sludge can be conveniently collected.
Further, six blades 6 are uniformly distributed on each of the first stirring blade group 26 and the second stirring blade group 44. Such structure, it is rational in infrastructure, improve stirring efficiency.
Further, a first filter screen is arranged on the left pipeline of the first water pumping pipe 13. With the structure, sewage is filtered, and impurities are reduced to enter the aeration tank 2.
Further, a second filter screen is arranged on the left pipeline of the second pumping pipe 33. With the structure, sewage is filtered, and sludge is prevented from entering the disinfection tank 4.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (6)
1. The utility model provides a sewage on-line monitoring plumbing installation, includes primary sedimentation tank (1), aeration tank (2), sedimentation tank (3), disinfection pond (4), detects pond (5) and controller, its characterized in that: the depth dimension of the primary sedimentation tank (1), the sedimentation tank (3) and the detection water tank (5) is the same, the depth dimension of the aeration tank (2) is the same as that of the disinfection tank (4), the depth dimension of the aeration tank (2) is smaller than that of the primary sedimentation tank (1), the primary sedimentation tank (1) is connected with the water inlet pipe (11), the tank wall of the primary sedimentation tank (1) is fixedly connected with a filter fence (12) matched with the water inlet pipe (11), the filter fence (12) is provided with filter holes all around, a first water pumping pipe (13) is arranged between the primary sedimentation tank (1) and the aeration tank (2), the first water pumping pipe (13) is connected with a first water pumping pump (14), two aeration pipes (21) are arranged at the bottom of the aeration tank (2) in parallel, the two aeration pipes (21) are connected with an air pump (22) in parallel, the tank wall of the aeration tank (2) is fixedly connected with a first mounting seat (23), the sludge treatment device is characterized in that a first mounting seat (23) is fixedly connected with a first stirring motor (24), the first stirring motor (24) is connected with a first rotating rod (25), the first rotating rod (25) penetrates through the first mounting seat (23), a plurality of first stirring blade groups (26) are uniformly distributed on the first rotating rod (25), a first drainage pipe (27) is arranged between the aeration tank (2) and the sedimentation tank (3), the first drainage pipe (27) is connected with a first electric valve (28), the bottom surface of the sedimentation tank (3) is provided with a slope (31), the lowest part of the slope (31) is provided with a sludge collection groove (32), a second water pumping pipe (33) is arranged between the sedimentation tank (3) and the disinfection tank (4), the second water pumping pipe (33) is connected with a second hand-operated water pump (34), and the tank wall of the disinfection tank (4) is fixedly connected with a second mounting seat (41), the second mounting seat (41) is fixedly connected with a second stirring motor (42), the second stirring motor (42) is connected with a second rotating rod (43), the second rotating rod (43) penetrates through the second mounting seat (41), a plurality of second stirring blade groups (44) are uniformly distributed on the second rotating rod (43), a second drain pipe (45) is arranged between the disinfection tank (4) and the detection tank (5), the second drain pipe (45) is connected with a second electric valve (46), a water quality monitor (51) is arranged in the detection tank (5), the detection tank (5) is connected with a third drain pipe (52), the sedimentation tank (3) is connected with a first sludge discharge pipe (35) and a second sludge discharge pipe (37), the tail ends of the first sludge discharge pipe (35) and the second sludge discharge pipe (37) are both arranged in a sludge collection tank (32), and the first sludge discharge pipe (35) is connected with a first sludge pump (36), the second sludge discharge pipe (37) is connected with a second sludge pump (38), the other end of the second sludge discharge pipe (37) is arranged in the aeration tank (2), the other end of the second sludge discharge pipe (37) is just opposite to the first rotating rod (25), a signal receiving end of the controller is connected with a water quality monitor (51) through signals, and a power output end of the controller is electrically connected with the first water pump (14), the air pump (22), the first stirring motor (24), the first electric valve (28), the second manual water pump (34), the first sludge pump (36), the second sludge pump (38), the second stirring motor (42) and the second electric valve (46).
2. The online sewage monitoring water supply and drainage device according to claim 1, wherein: the bottom surface of the filtering fence net (12) is inclined from left to right from bottom to top.
3. The online sewage monitoring water supply and drainage device according to claim 2, wherein: the bottom surface of the mud collecting groove (32) is inclined from low to high from one side to the other side of the first mud discharging pipe (35).
4. The online sewage monitoring water supply and drainage device according to claim 3, wherein: six fan blades (6) are uniformly distributed on the first stirring blade group (26) and the second stirring blade group (44).
5. The online sewage monitoring water supply and drainage device according to claim 4, wherein: a first filter screen is arranged on the left pipeline of the first water pumping pipe (13).
6. The on-line sewage monitoring water supply and drainage device according to claim 5, wherein: and a second filter screen is arranged on the left pipeline of the second water pumping pipe (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920868457.2U CN210030343U (en) | 2019-06-11 | 2019-06-11 | Sewage online monitoring water supply and drainage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920868457.2U CN210030343U (en) | 2019-06-11 | 2019-06-11 | Sewage online monitoring water supply and drainage device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210030343U true CN210030343U (en) | 2020-02-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920868457.2U Expired - Fee Related CN210030343U (en) | 2019-06-11 | 2019-06-11 | Sewage online monitoring water supply and drainage device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210030343U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113588908A (en) * | 2021-08-17 | 2021-11-02 | 北京市环境保护科学研究院 | Water quality standard exceeding checking system and method |
-
2019
- 2019-06-11 CN CN201920868457.2U patent/CN210030343U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113588908A (en) * | 2021-08-17 | 2021-11-02 | 北京市环境保护科学研究院 | Water quality standard exceeding checking system and method |
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Granted publication date: 20200207 |