CN110776024A - Safe energy-concerving and environment-protective oil recovery sewage treatment charge device - Google Patents
Safe energy-concerving and environment-protective oil recovery sewage treatment charge device Download PDFInfo
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- CN110776024A CN110776024A CN201911027391.5A CN201911027391A CN110776024A CN 110776024 A CN110776024 A CN 110776024A CN 201911027391 A CN201911027391 A CN 201911027391A CN 110776024 A CN110776024 A CN 110776024A
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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
- C02F1/00—Treatment of water, waste water, or sewage
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
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- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
An electric execution valve is arranged in the middle of a medicament drainage tube I of a safe, energy-saving and environment-friendly oil extraction sewage treatment dosing device, the other end of the medicament drainage tube I is communicated with the bottom of a liquid level balance tank, the bottom of the liquid level balance tank is connected with an inlet of a dosing pump through a medicament drainage tube II, a dosing pump outlet dosing tube is connected with a reaction tank through a lower tee joint, a U-shaped tube and a dosing flowmeter, so that the influence of the liquid level height of a medicament storage tank on the dosing pump is reduced, when the system is abnormally operated, medicaments cannot automatically flow into the reaction tank, the safety of the system is ensured, an exhaust pipe is arranged at the top of the medicament storage tank, the exhaust pipe is communicated with the top of the liquid level balance tank through an upper tee joint and an upper tee joint of the dosing tube through an upper tee joint and an upper communicating pipe, the top end of the, the lower end of the venturi tube is connected with the reaction tank, so that the influence of medicament volatile gas on the environment is reduced, and the device is energy-saving and environment-friendly.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a safe, energy-saving and environment-friendly chemical adding device for oil extraction sewage treatment.
Background
With the rapid development of economy, the living standard of people is gradually improved, meanwhile, the protection consciousness on the environment is gradually enhanced, particularly in the aspect of water environment pollution prevention, the originally seen black and odorous water body everywhere disappears, and the industrial sewage which is stolen and disorderly discharged is discharged after the standard reaching treatment. Obviously, an important measure for improving the current water environment is to strengthen the treatment of sewage.
At present, the sewage treatment process mainly comprises a physical chemical method, a biological method, a biochemical method and the like, wherein the biochemical method is most commonly used in the actual water treatment process because the biochemical method combines the environmental protection, the economy and the high efficiency and the thoroughness of the chemical method of the biological method.
However, as long as chemical methods are involved, the addition of chemical agents cannot be avoided in the water treatment process. The traditional chemical agent feeding mode generally comprises the steps that a dosing pump is used for pumping an agent from an agent storage tank and then directly pumping the agent into a sewage treatment process, and the dosing pump is controlled by a sewage flowmeter on the basis of the dosing system in a slightly intelligent dosing mode, so that the dosing amount is matched with the sewage amount. Although the dosing mode can meet the dosing requirement of a sewage treatment site, a plurality of problems exist. For example, when the dosing system medicament storage tank is an above-ground tank and the dosing pump draws medicament from the bottom of the tank, the level of the medicament storage tank may cause pressure on the dosing pump inlet, thereby affecting the accuracy and the service life of the dosing pump. In addition, the dosing system has no gas collecting or processing structure, and is easy to cause air pollution when encountering volatile medicaments. Finally, once the dosing system encounters the problems of blocking of the dosing pipeline and the like, the pump is easy to suppress pressure, and therefore the motor is burnt. Therefore, how to design a set of safe, environment-friendly and energy-saving water treatment dosing device is a technical problem which needs to be solved urgently in the field.
Disclosure of Invention
Aiming at the defects, the invention designs a safe, energy-saving and environment-friendly chemical adding device for treating oil extraction sewage.
The purpose of the invention is realized by the following technical scheme:
the invention comprises the following steps: the device comprises an exhaust pipe, a medicament storage tank, an electric execution valve, a medicament drainage pipe I, a liquid level balance tank, a medicament drainage pipe II, an upper communicating pipe, a medicament feeding pump, a medicament feeding pipe, a medicament feeding flow meter, a sewage pipeline, a sewage flow meter, a Venturi tube, a reaction tank, a water outlet pipeline and a water outlet valve; the method is characterized in that: the chemical storage tank is a circular vault tank, the bottom of the chemical storage tank is provided with a chemical drainage tube I, an electric execution valve is arranged in the middle of the chemical drainage tube I, the other end of the chemical drainage tube I is communicated with the bottom of a liquid level balance tank, the bottom of the liquid level balance tank is connected with an inlet of a chemical feeding pump through a chemical drainage tube II, a chemical feeding pump outlet is connected with a chemical feeding pipe, the chemical feeding pipe is connected with a reaction tank through a lower tee joint, a U-shaped pipe and a chemical feeding flow meter, the design of the U-shaped pipe can be used for stopping the chemical feeding pump or emergently stopping the power supply when the system does not normally run, but the electric execution valve is not closed, the liquid level of the balance tank is realized, the chemical cannot automatically flow into the reaction tank under the high liquid level pressure of. The top of medicament holding vessel is equipped with the blast pipe, the blast pipe is through last tee bend, go up communicating pipe and liquid level balance tank top intercommunication, the blast pipe is through well tee bend, lower communicating pipe and the hookup of the tee bend that down adds medicine pipe upper portion, the blast pipe top is through elbow and venturi's orifice hookup, sewage line passes through the sewage flowmeter, couples with venturi's upper end, venturi's lower extreme and reaction tank hookup.
Above-mentioned safe energy-concerving and environment-protective oil recovery sewage treatment charge device, the upper end that gets into venturi when sewage passes through sewage pipeline, sewage flowmeter, and sewage gets into the orifice, produces the negative pressure, inhales the volatile gas in medicament holding vessel top in the reaction tank to reach the purpose that prevents environmental pollution.
The top of the medicament storage tank in the safe, energy-saving and environment-friendly oil extraction sewage treatment and dosing device is also provided with a feeding port, a manhole, a safety valve and a one-way air inlet valve.
The liquid level balancing tank in the safe, energy-saving and environment-friendly oil extraction sewage treatment dosing device is provided with the liquid level meter, the liquid level is controlled to be 25-30cm, 4-20mA current signals can be output, and the electric execution valve is controlled through current output.
Above-mentioned safe energy-concerving and environment-protective oil recovery sewage treatment charge device's the medicine pipe vertical height that is greater than the height of medicament holding vessel, is equipped with down the tee bend with the same high position of medicament holding vessel.
The reaction tank in the safe, energy-saving and environment-friendly oil extraction sewage treatment dosing device is provided with a water outlet pipeline, and the water outlet pipeline is provided with an outlet valve.
The orifice aperture ratio β of the venturi tube in the safe, energy-saving and environment-friendly oil extraction wastewater treatment dosing device is = orifice D/wastewater line D, i.e. β = 0.3- β -0.75.
Above-mentioned switch board input 220V power among safe energy-concerving and environment-protective oil recovery sewage treatment charge device, the switch board passing signal line is connected with last liquid level signal binding post, the lower liquid level signal binding post of level gauge respectively, the switch board passes through power cord I and is connected with electronic executive valve, the switch board passes through power cord II and is connected with charge pump motor binding post.
The power distribution cabinet in the safe, energy-saving and environment-friendly oil extraction sewage treatment dosing device is a variable frequency control cabinet.
The invention has the beneficial effects that: especially, be applicable to oil field oil recovery sewage or domestic sewage and handle and add the medicine, not only reduced the adverse effect of medicine storage tank liquid level height to the dosing pump through liquid level balance structure, still promote the reentrant sewage treatment flow after the take the altitude with the medicament through the design simultaneously, guaranteed the security of dosing system, but also make full use of sewage comes the kinetic energy of water, through venturi's the structure of bleeding, avoided the pollution of medicament volatility gas to the environment, energy-concerving and environment-protective.
Drawings
FIG. 1-schematic view of the structure of the present invention
In the figure, 0 is an exhaust pipe, 0-1 is an upper tee, 0-2 is a middle tee, 0-3 is a lower communicating pipe, and 0-4 is a lower tee; 1. 1-1 part of a medicament storage tank, 1-1 part of a feeding port, 1-2 parts of a manhole, 1-3 parts of a safety valve and 1-4 parts of a one-way air inlet valve; 2. an electric execution valve, 3, a medicament drainage tube I, 4, a liquid level balancing tank, and 4-1, a liquid level meter; 5. a medicament drainage tube II, 6 is an upper communicating tube, 7 is a dosing pump, 8 is a dosing tube, and 8-1 is a U-shaped tube; 9. the system comprises a dosing flowmeter, 10 parts of a sewage pipeline, 11 parts of a sewage flowmeter, 12 parts of a venturi tube, 13 parts of a reaction tank, 14 parts of a water outlet pipeline, 15 parts of a water outlet valve, 16 parts of a power distribution cabinet, 16-1 parts of a power line I, 16-2 parts of a signal line and 16-3 parts of a power line II; B. an orifice.
Detailed Description
The invention will be further described with reference to the accompanying drawings in which:
as shown in fig. 1:
example 1
A safe, energy-saving and environment-friendly chemical dosing device for oil extraction sewage treatment consists of an exhaust pipe 0, a chemical storage tank 1, an electric execution valve 2, a chemical drainage pipe I3, a liquid level balance tank 4, a chemical drainage pipe II 5, an upper communicating pipe 6, a chemical dosing pump 7, a chemical dosing pipe 8, a chemical dosing flowmeter 9, a sewage pipeline 10, a sewage flowmeter 11, a Venturi tube 12, a reaction tank 13, a water outlet pipeline 14, a water outlet valve 15 and a power distribution cabinet 16; the chemical storage tank 1 is a circular vault tank, a chemical drainage tube I3 is arranged at the bottom of the chemical storage tank 1, an electric execution valve 2 is arranged in the middle of the chemical drainage tube I3, the other end of the chemical drainage tube I3 is communicated with the bottom of a liquid level balance tank 4, the bottom of the liquid level balance tank 4 is connected with an inlet of a chemical feeding pump 7 through a chemical drainage tube II 5, an outlet of the chemical feeding pump 7 is connected with a chemical feeding tube 8, the chemical feeding tube 8 is connected with a reaction tank 13 through a lower tee joint 0-4 and a U-shaped tube 8-1 and a flowmeter 9, an exhaust pipe 0 is arranged at the top of the chemical storage tank 1, the exhaust pipe 0 is communicated with the top of the liquid level balance tank 4 through an upper tee joint 0-1 and an upper communicating tube 6, the exhaust pipe 0 is connected with a lower tee joint 0-4 at the upper part of the chemical feeding tube 8, the top end of the exhaust pipe 0 is connected with a throttling hole B of a Venturi tube 12 through an elbow, the sewage pipeline 10 is connected with the upper end of the Venturi tube 12 through a sewage flow meter 11, and the lower end of the Venturi tube 12 is connected with a reaction tank 13.
The top of the medicament storage tank 1 is also provided with a feeding port 1-1, a manhole 1-2, a safety valve 1-3 and a one-way air inlet valve 1-4.
According to the liquid level meter 4-1 of the liquid level balancing tank 4, the liquid level is controlled to be 26 +/-0.5 cm, a 4-20mA current signal can be output, and the electric execution valve 2 is controlled through the current output.
The vertical height of the medicine feeding pipe 8 is greater than that of the medicine storage tank 1, and a lower tee joint 0-4 is arranged at the position which is at the same height as the medicine storage tank 1.
The reaction tank 13 is provided with a water outlet pipeline 14, and the water outlet pipeline 14 is provided with an outlet valve 15.
According to the invention, the sewage pipeline 10 is preferably a pipeline with the diameter phi of 214mm and the inner diameter phi of 200mm, and the orifice B of the Venturi tube 12 has the aperture ratio β =0.3 and the orifice d =60 mm.
The automatic liquid level control system is characterized in that a 220V power supply is input into the power distribution cabinet 16, the power distribution cabinet 16 is connected with an upper liquid level signal wiring terminal and a lower liquid level signal wiring terminal of the liquid level meter 4-1 through signal lines 16-2 respectively, the power distribution cabinet 16 is connected with the electric execution valve 2 through a power line I16-1, and the power distribution cabinet 16 is connected with a motor wiring terminal of the dosing pump 7 through a power line II 16-3.
The power distribution cabinet 16 is a variable frequency control cabinet.
Example 2
Preferably, the liquid level of the liquid level balance tank 4 of the safe, energy-saving and environment-friendly oil extraction sewage treatment dosing device is controlled to be 26 +/-1 cm, 4-20mA current signals can be output, and the electric execution valve 2 is controlled through current output.
According to the invention, the sewage pipeline 10 is preferably a pipeline with the diameter phi of 214mm and the inner diameter phi of 200mm, and the orifice B of the Venturi tube 12 has the aperture ratio of β =0.35 and the orifice d =70 mm.
Example 3
Preferably, the liquid level of the liquid level balance tank 4 of the safe, energy-saving and environment-friendly oil extraction sewage treatment dosing device is controlled to be 27 +/-0.5 cm, 4-20mA current signals can be output, and the electric execution valve 2 is controlled through current output.
According to the invention, the sewage pipeline 10 is preferably a pipeline with the diameter phi of 214mm and the inner diameter phi of 200mm, and the orifice B of the Venturi tube 12 has the aperture ratio of β =0.4 and the orifice d =80 mm.
Example 4
Preferably, the liquid level of the liquid level balance tank 4 of the safe, energy-saving and environment-friendly oil extraction sewage treatment dosing device is controlled to be 27 +/-1 cm, 4-20mA current signals can be output, and the electric execution valve 2 is controlled through current output.
According to the invention, the sewage pipeline 10 is preferably a pipeline with the diameter phi of 214mm and the inner diameter phi of 200mm, and the orifice B of the Venturi tube 12 has the aperture ratio of β =0.45 and the orifice d =90 mm.
Example 5
Preferably, the liquid level of the liquid level balance tank 4 of the safe, energy-saving and environment-friendly oil extraction sewage treatment dosing device is controlled to be 27 +/-1.5 cm, 4-20mA current signals can be output, and the electric execution valve 2 is controlled through current output.
According to the invention, the sewage pipeline 10 is preferably a pipeline with the diameter phi of 214mm and the inner diameter phi of 200mm, and the orifice B of the Venturi tube 12 has the aperture ratio of β =0.5 and the orifice d =100 mm.
Example 6
Preferably, the liquid level of the liquid level balance tank 4 of the safe, energy-saving and environment-friendly oil extraction sewage treatment dosing device is controlled to be 28 +/-0.5 cm, 4-20mA current signals can be output, and the electric execution valve 2 is controlled through current output.
According to the invention, the sewage pipeline 10 is preferably a pipeline with the diameter phi of 214mm and the inner diameter phi of 200mm, and the orifice B of the Venturi tube 12 has the aperture ratio of β =0.55 and the orifice d =110 mm.
Example 7
Preferably, the liquid level of the liquid level balance tank 4 of the safe, energy-saving and environment-friendly oil extraction sewage treatment dosing device is controlled to be 28 +/-1 cm, 4-20mA current signals can be output, and the electric execution valve 2 is controlled through current output.
According to the invention, the sewage pipeline 10 is preferably a pipeline with the diameter phi of 214mm and the inner diameter phi of 200mm, and the orifice B of the Venturi tube 12 has the aperture ratio of β =0.6 and the orifice d =120 mm.
Example 8
Preferably, the liquid level of the liquid level balance tank 4 of the safe, energy-saving and environment-friendly oil extraction sewage treatment dosing device is controlled to be 28 +/-1.5 cm, 4-20mA current signals can be output, and the electric execution valve 2 is controlled through current output.
According to the invention, the sewage pipeline 10 is preferably a pipeline with the diameter of 214mm and the inner diameter of 200mm, and the orifice B of the Venturi tube 12 has the aperture ratio of β =0.65 and the orifice d =130 mm.
Example 9
Preferably, the liquid level of the liquid level balance tank 4 of the safe, energy-saving and environment-friendly oil extraction sewage treatment dosing device is controlled to be 29 +/-0.5 cm, 4-20mA current signals can be output, and the electric execution valve 2 is controlled through current output.
The vertical height of the medicine feeding pipe 8 is greater than that of the medicine storage tank 1, and a lower tee joint 0-4 is arranged at the position which is at the same height as the medicine storage tank 1.
According to the invention, the sewage pipeline 10 is preferably a pipeline with the diameter phi of 214mm and the inner diameter phi of 200mm, and the orifice B of the Venturi tube 12 has the aperture ratio β =0.7 and the orifice d =140 mm.
Example 10
Preferably, the liquid level of the liquid level balance tank 4 of the safe, energy-saving and environment-friendly oil extraction sewage treatment dosing device is controlled to be 29 +/-1 cm, 4-20mA current signals can be output, and the electric execution valve 2 is controlled through current output.
According to the invention, the sewage pipeline 10 is preferably a pipeline with the diameter of 214mm and the inner diameter of 200mm, and the orifice B of the Venturi tube 12 has the aperture ratio of β =0.75 and the orifice d =150 mm.
The utility model provides a be applicable to oil field oil recovery sewage or domestic sewage treatment charge device, not only last communicating pipe through liquid level balance structure has reduced the adverse effect of medicine storage tank liquid level height to the dosing pump, simultaneously "U" type pipe design can be in the system abnormal operation, for example stop the dosing pump or promptly have a power failure, but the electric actuator valve is not closed, play the effect of balanced liquid level balance tank liquid level, the medicament is unlikely to flow automatically and get into the reaction tank under the high liquid level pressure of medicine storage tank, the security of system has been guaranteed, and still make full use of sewage kinetic energy of coming water, venturi passes through the negative pressure air exhaust structure, thereby reach the pollution of avoiding medicament volatility gas to the environment, energy-concerving and environment-protective purpose.
Claims (8)
1. The utility model provides a safe energy-concerving and environment-protective oil recovery sewage treatment charge device, includes: the device comprises an exhaust pipe (0), a medicament storage tank (1), an electric execution valve (2), a medicament drainage pipe I (3), a liquid level balance tank (4), a medicament drainage pipe II (5), an upper communicating pipe (6), a medicament feeding pump (7), a medicament feeding pipe (8), a medicament feeding flow meter (9), a sewage pipeline (10), a sewage flow meter (11), a Venturi tube (12), a reaction tank (13), a water outlet pipeline (14), a water outlet valve (15) and a power distribution cabinet (16); the method is characterized in that: the chemical storage tank (1) is a circular vault tank, a chemical drainage tube I (3) is arranged at the bottom of the chemical storage tank (1), an electric execution valve (2) is arranged in the middle of the chemical drainage tube I (3), the other end of the chemical drainage tube I (3) is communicated with the bottom of a liquid level balance tank (4), the bottom of the liquid level balance tank (4) is connected with an inlet of a chemical feeding pump (7) through a chemical drainage tube II (5), an outlet of the chemical feeding pump (7) is connected with a chemical feeding tube (8), the chemical feeding tube (8) is connected with a reaction tank (13) through a lower tee joint (0-4), a U-shaped tube (8-1) and a chemical feeding flow meter (9), an exhaust pipe (0) is arranged at the top of the chemical storage tank (1), and the exhaust pipe (0) is communicated with the top of the liquid level balance tank (4) through an upper tee joint (0-1) and an upper communicating pipe, the exhaust pipe (0) is connected with a lower tee joint (0-4) on the upper part of the dosing pipe (8) through a middle tee joint (0-2) and a lower communicating pipe (0-3), the top end of the exhaust pipe (0) is connected with a throttling hole (B) of the Venturi tube (12) through an elbow, the sewage pipeline (10) is connected with the upper end of the Venturi tube (12) through a sewage flowmeter (11), and the lower end of the Venturi tube (12) is connected with the reaction tank (13).
2. The safe, energy-saving and environment-friendly chemical adding device for oil extraction wastewater treatment according to claim 1, which is characterized in that: the top of the medicament storage tank (1) is also provided with a feeding port (1-1), a manhole (1-2), a safety valve (1-3) and a one-way air inlet valve (1-4).
3. The safe, energy-saving and environment-friendly chemical adding device for oil extraction wastewater treatment according to claim 1, which is characterized in that: the liquid level balancing tank (4) is provided with a liquid level meter (4-1), the liquid level is controlled to be 25-30cm, 4-20mA current signals can be output, and the electric execution valve (2) is controlled through current output.
4. The safe, energy-saving and environment-friendly chemical adding device for oil extraction wastewater treatment according to claim 1, which is characterized in that: the vertical height of the medicine feeding pipe (8) is greater than that of the medicine storage tank (1), and a lower tee joint (0-4) is arranged at the position with the same height as the medicine storage tank (1).
5. The safe, energy-saving and environment-friendly chemical adding device for oil extraction wastewater treatment according to claim 1, which is characterized in that: the reaction tank (13) is provided with a water outlet pipeline (14), and the water outlet pipeline (14) is provided with an outlet valve (15).
6. The safe, energy-saving and environment-friendly oil extraction wastewater treatment dosing device is characterized in that the aperture ratio of the orifice (B) of the venturi tube (12) is β = orifice D/sewer line D, i.e. β =0.3 ≤ β ≤ 0.75.
7. The safe, energy-saving and environment-friendly chemical adding device for oil extraction wastewater treatment according to claim 1, which is characterized in that: the automatic liquid level control device is characterized in that a 220V power supply is input into the power distribution cabinet (16), the power distribution cabinet (16) is respectively connected with an upper liquid level signal wiring terminal and a lower liquid level signal wiring terminal of the liquid level meter (4-1) through signal lines (16-2), the power distribution cabinet (16) is connected with the electric execution valve (2) through a power line I (16-1), and the power distribution cabinet (16) is connected with a motor wiring terminal of the dosing pump (7) through a power line II (16-3).
8. The safe, energy-saving and environment-friendly chemical adding device for oil extraction wastewater treatment according to claim 1, which is characterized in that: the power distribution cabinet (16) is a variable frequency control cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911027391.5A CN110776024A (en) | 2019-10-28 | 2019-10-28 | Safe energy-concerving and environment-protective oil recovery sewage treatment charge device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911027391.5A CN110776024A (en) | 2019-10-28 | 2019-10-28 | Safe energy-concerving and environment-protective oil recovery sewage treatment charge device |
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| CN110776024A true CN110776024A (en) | 2020-02-11 |
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| CN201911027391.5A Pending CN110776024A (en) | 2019-10-28 | 2019-10-28 | Safe energy-concerving and environment-protective oil recovery sewage treatment charge device |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103055733A (en) * | 2012-12-25 | 2013-04-24 | 中国海洋石油总公司 | Dosage device |
| CN203448046U (en) * | 2013-08-26 | 2014-02-26 | 四川省上圣科技有限责任公司 | Simple multifunctional dosing device |
| CN203653319U (en) * | 2013-12-13 | 2014-06-18 | 长沙赛恩斯环保科技有限公司 | Arsenic wastewater treatment device |
| CN204371249U (en) * | 2014-11-28 | 2015-06-03 | 中国石油天然气股份有限公司 | Medicament adding device for recovering casing gas of oil well |
| CN106745561A (en) * | 2015-11-25 | 2017-05-31 | 深圳市科瑞德消毒用品科技开发有限公司 | A kind of automatic chemical dosing bucket |
| CN206266295U (en) * | 2016-10-14 | 2017-06-20 | 长沙南方宇航环境工程有限公司 | Medicine system and sewage disposal system |
-
2019
- 2019-10-28 CN CN201911027391.5A patent/CN110776024A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103055733A (en) * | 2012-12-25 | 2013-04-24 | 中国海洋石油总公司 | Dosage device |
| CN203448046U (en) * | 2013-08-26 | 2014-02-26 | 四川省上圣科技有限责任公司 | Simple multifunctional dosing device |
| CN203653319U (en) * | 2013-12-13 | 2014-06-18 | 长沙赛恩斯环保科技有限公司 | Arsenic wastewater treatment device |
| CN204371249U (en) * | 2014-11-28 | 2015-06-03 | 中国石油天然气股份有限公司 | Medicament adding device for recovering casing gas of oil well |
| CN106745561A (en) * | 2015-11-25 | 2017-05-31 | 深圳市科瑞德消毒用品科技开发有限公司 | A kind of automatic chemical dosing bucket |
| CN206266295U (en) * | 2016-10-14 | 2017-06-20 | 长沙南方宇航环境工程有限公司 | Medicine system and sewage disposal system |
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Application publication date: 20200211 |