River channel discharge port microbial agent feeding device
By installing automated microbial agent dosing devices on the river outfall revetment, combined with water quality monitoring and rotating spray heads, the problems of difficult maintenance and small dosing area at the river outfall have been solved, achieving efficient and automated water quality treatment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG TAOHUAYUAN ENVIRONMENTAL PROTECTION TECH
- Filing Date
- 2025-06-26
- Publication Date
- 2026-05-29
AI Technical Summary
In existing technologies, the bacterial agent dosing devices at river outlets are difficult to maintain, lack specificity, have a small dosing area, and are difficult to effectively treat water quality problems.
Design a microbial agent dosing device for river outlets, set on the revetment of the river outlet, combined with a water quality monitoring module and a dosing pump, to add the agent into the river through an automatic rotating spray head, and use a Venturi tube and a perforated plate to realize the atomization and diffusion of the agent, and combine with a control unit to realize automatic control.
It enables efficient addition of microbial agents at river outlets, improves agent utilization, reduces maintenance difficulty and labor costs, increases the application area, and enhances the targeting and automation level of water quality treatment.
Smart Images
Figure CN224299030U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of water treatment technology, and in particular to a device for adding microbial agents to river outlets. Background Technology
[0002] Water quality indicators at river outlets need to be tested regularly, and microbial agents need to be added to maintain the river's water quality. Currently, commonly used microbial agent dosing equipment includes automatic dosing devices for use on the river surface, which can move freely on the river surface; and dosing devices that are set up directly on the riverbank underwater, which can directly put microbial agents into the water, which is more efficient but difficult to maintain.
[0003] For example, Chinese patent application CN119752612A discloses a device for the propagation and addition of microbial agents for river pollution control. The device includes a powerboat hull, a portable generator, and a propagation tank. The propagation tank comprises an inner propagation tank, an insulated outer tank, a water bath cavity between the inner and outer tanks, a top cover on the inner tank, and a feed hopper with a plug. A water inlet filter assembly is mounted on the outer wall of the outer tank, with one end extending into the river and the other end connected to the inner tank. A jet dosing assembly includes a liquid outlet valve pipe connected to the bottom of the inner tank, a metering diaphragm pump connected to the liquid inlet and outlet valve pipe, and a jet pipe assembly fixed to the powerboat hull and connected to the outlet of the metering diaphragm pump. This invention enables the direct propagation of microbial agents on the powerboat hull and automatic addition of the agents to the river surface, replacing manual dosing. It is inconvenient to apply the microbial agent to river outlets, and it is not targeted at the water quality treatment of river outlets. Utility Model Content
[0004] To address the problems of existing technologies, such as the difficulty in maintaining underwater microbial agent dosing devices located at riverbank outlets, the lack of targeted application of automatic dosing devices on the river surface, and the small dosing area of existing microbial agent dosing equipment, this utility model proposes a microbial agent dosing device for river outlets. This device is installed on the revetment of the river outlet, has a simple structure, is easy to maintain, and can automatically detect the water quality at the river outlet and add microbial agents.
[0005] To achieve the above-mentioned technical effects, this utility model proposes:
[0006] A microbial agent dosing device for river outlets includes a control unit, which is connected to a water quality monitoring module and a dosing pump. The water quality monitoring module is located underwater at the river outlet. The dosing pump is connected to an agent storage tank and a delivery unit. The delivery unit is arranged along the riverbank and is equipped with several automatic rotating spray heads.
[0007] The microbial agent dosing device for river outlets of this utility model is installed on the revetment of the river outlet. The water quality monitoring module monitors the water quality at the river outlet and transmits the real-time detection data to the control unit. The control unit judges the data according to the set indicators, and when the water quality is poor, it controls the dosing pump to pump the agent from the agent storage tank into the delivery unit, and then adds it to the river at the river outlet through the automatic rotating spray head set on the delivery unit.
[0008] The conveying unit includes a main conveying pipe and several branch conveying pipes installed on the main conveying pipe. The main conveying pipe is installed along the riverbank, and the automatic rotating spray head is installed at the end of the branch conveying pipes. The branch conveying pipes are normally installed horizontally and connected to the main conveying pipe, extending from the main pipe toward the river to raise the height of the automatic rotating spray head, which facilitates the adjustment of the bacterial agent dosing range by the automatic rotating spray head.
[0009] The main delivery pipe is fixed to the riverbank using a fixing bracket. The fixing bracket securely holds the main delivery pipe in place and reduces vibrations generated when the dosing pump is turned on.
[0010] The main conveying pipe and the branch conveying pipe are made of stainless steel and are connected by threaded unions.
[0011] The water quality monitoring module performs real-time detection of COD, ammonia nitrogen, total phosphorus, and dissolved oxygen concentrations in the water at the river outlet and transmits the detection data to the unit. The water quality monitoring module integrates multiple sensors for detecting COD, ammonia nitrogen, total phosphorus, and dissolved oxygen concentrations in the water at the river outlet.
[0012] The automatic rotating spray head includes a spray body connected to a spray pipe. A limiting ring is provided on the outside of the spray body, and a reversing device is provided on the outside of the spray pipe. A rocker arm is rotatably connected to the spray pipe, and a rocker arm shaft and a spring are provided inside the rocker arm. A striking block is provided on the outside of the spray pipe, and the striking block abuts against the side of the rocker arm. The rocker arm is provided with a baffle plate and a guide plate, and the baffle plate and the guide plate are arranged in a straight line with the nozzle of the spray pipe. The rocker arm is provided with a flipping hook, and the flipping hook is located above the reversing device.
[0013] The nozzle is equipped with a venturi tube inside, and the small-diameter opening end of the venturi tube faces the nozzle head of the nozzle. The constriction section of the venturi tube is equipped with an air pipe, which passes through the nozzle and connects to the outside. The constriction ratio of the venturi tube is 2.5:1.
[0014] The nozzle has a perforated plate inside, which is located near the nozzle head.
[0015] The microbial agent storage tank is equipped with a stirrer. The stirrer prevents the microbial agent from settling. The perforated plate has equilateral triangular openings, and the perforation rate of the perforated plate ranges from 50% to 60%.
[0016] The beneficial effects of this utility model are:
[0017] 1. Installed on the revetment of river outlets, it provides targeted water quality regulation at river outlets and facilitates later maintenance; 2. Based on the detection data of the water quality monitoring module, it controls the dosage of bacterial agent, improving the utilization rate of bacterial agent; 3. Automatic bacterial agent dosing eliminates the need for manual inspection and operation, reducing labor costs; 4. Equipped with an automatic rotating nozzle, it can increase the bacterial agent dosing area, and the automatic rotating nozzle has a built-in Venturi tube and perforated plate, which has a certain atomization effect while rotating to dosing bacterial agent. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of a microbial agent dosing device for river outlets.
[0019] Figure 2 This is a schematic diagram of the automatic rotating spray head.
[0020] Figure 3 This is a schematic diagram of a perforated plate.
[0021] Icon labels:
[0022] 1. Microbial agent storage tank; 2. Automatic rotary spray head; 3. Dosing pump; 4. Control unit; 5. Main delivery pipe; 6. Water quality monitoring module; 7. Delivery branch pipe; 8. Threaded union;
[0023] 201. Spray body; 202. Nozzle; 203. Limiting ring; 204. Reversing device; 205. Rocker arm; 206. Rocker arm shaft; 207. Spring; 208. Impact block; 209. Water baffle; 210. Flow guide plate; 211. Tilting hook; 212. Venturi tube; 213. Perforated plate; 214. Flow stabilizer. Detailed Implementation
[0024] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.
[0025] This utility model provides a device for adding microbial agents to river outlets. The preferred embodiments of the device for adding microbial agents to river outlets are described below.
[0026] Example 1
[0027] Reference Appendix Figure 1In this embodiment, the microbial agent dosing device at the river outlet includes a control unit 4, which is connected to a water quality monitoring module 5 and a dosing pump 3. The water quality monitoring module 5 is located underwater at the river outlet, and the dosing pump 3 is connected to an agent storage tank 1 and a delivery unit. The delivery unit is equipped with two automatic rotating spray heads 2. In this embodiment, the agent dosing device can be directly installed on the revetment at the river outlet.
[0028] The core component of the control unit 4 is a PLC, which is connected to the water quality monitoring module 5. It is used to receive the detection signal from the water quality monitoring module 5 and regulate the dosing pump 3 to pump the culture agent in the bacterial agent storage tank 1 into the delivery unit. The bacterial agent is then added to the river through the automatic rotating spray head 2.
[0029] The water quality monitoring module 5 integrates multiple sensors, enabling real-time detection of COD, ammonia nitrogen, total phosphorus, and dissolved oxygen in the water at the river outlet, and transmitting the detection data to the control unit 4. In this embodiment, only one water quality monitoring module 5 is used.
[0030] The microbial agent storage tank 1 is used for the expansion of added microbial agents. It has a built-in mixer to agitate the agents and prevent clumping, which would affect expansion efficiency. Depending on the microbial community being added, a carbon source is added to the microbial agent storage tank 1 to improve expansion efficiency.
[0031] The dosing pump 3 connects the main delivery pipe 5 of the delivery unit and the inoculum storage tank 1. The dosing pump 3 can directly pump the inoculum from the inoculum storage tank 1 into the main delivery pipe 5 of the delivery unit. The dosing pump 3 can be automatically started and stopped by the control system, or it can be manually started and stopped by the control unit 4.
[0032] The delivery unit includes a main delivery pipe 5 and two branch delivery pipes 7 mounted on the main delivery pipe 5. The main delivery pipe 5 is installed along the riverbank, and the automatic rotating spray head 2 is located at the end of the branch delivery pipes 7. The main delivery pipe 5 is directly fixed to the riverbank using a fixing bracket, which securely fixes the delivery unit and reduces vibration generated when the dosing pump 3 is turned on. In this embodiment, the main delivery pipe 5 and the branch delivery pipes 7 are made of SS304 stainless steel and are connected by a threaded union 8. In other embodiments, the main delivery pipe 5 and the branch delivery pipes 7 may be made of other materials to ensure effective delivery of the microbial agent while minimizing damage and reducing subsequent maintenance costs.
[0033] In this embodiment, the main conveying pipe 5 is fixed to the revetment at the river outlet by a fixing bracket, and the branch conveying pipe 7 is horizontally arranged and connected to the main conveying pipe 5. An automatic rotating spray head 2 is provided at the other end of the branch conveying pipe 7 that is connected to the main conveying pipe 5.
[0034] Reference Appendix Figure 2The automatic rotating spray head includes a spray body 201 connected to a spray pipe 202. A limiting ring 203 is provided on the outside of the spray body 201, and a reversing device 204 is provided on the outside of the spray pipe 202. A rocker arm 205 is rotatably connected to the spray pipe 202, and a rocker arm shaft 206 and a spring 207 are provided inside the rocker arm 205. A striking block 208 is provided on the outside of the spray pipe 202, abutting against the side of the rocker arm 205. The rocker arm 205 is provided with a baffle plate 209 and a guide plate 210, which are arranged in a straight line with the nozzle of the spray pipe 202. The rocker arm 205 is provided with a flipping hook 211, located above the reversing device 204. A flow stabilizer 214 is provided inside the spray pipe 202 near the nozzle. The automatic rotating spray head can automatically rotate during the addition of the microbial agent, allowing for the addition of microbial agents to areas near rivers.
[0035] The nozzle 202 contains a Venturi tube 212, with its smaller diameter opening facing the nozzle head. The Venturi tube 212 is oriented such that its larger diameter opening is the water inlet, and its smaller diameter opening is the water outlet. An air pipe is located in the converging section of the Venturi tube, connecting to the outside via the nozzle 202. When water flows through the converging section, its velocity increases, creating a negative pressure zone, drawing in air through the side-mounted air pipe. The nozzle 202 contains a perforated plate 213, located near the nozzle head. The perforations in the perforated plate are equilateral triangular, with an opening ratio of 50%. After mixing with the water flow in the expanding section following the converging section of the Venturi tube 212, the mixture is further sheared by the perforated plate 213, forming micro / nano bubbles. In this way, when spraying microbial agents, the water mist containing micro-nano bubbles can carry the agents to a greater distance and cover a larger water surface. At the same time, micro-nano bubbles also help increase dissolved oxygen in the water, promoting the growth and function of aerobic bacteria in the microbial agents.
[0036] In this embodiment, the shrinkage ratio of the venturi tube is set from the conventional 3:1 to 2.5:1, the inner diameter of the large diameter end is 50mm, and the inner diameter of the small diameter end is 20mm, which reduces the energy loss in the negative pressure zone and retains more water pressure for mechanical drive.
[0037] The microbial agent dosing device at the river outlet in this embodiment monitors indicators such as COD, ammonia nitrogen, and total phosphorus in real time through a water quality monitoring module. When the water quality exceeds the Class IV standard for surface water, the control unit immediately activates the microbial agent dosing device, allowing the microbial agent to directly act on the highly polluted area of the outlet. Compared with the traditional fixed dosing method, this improves the utilization rate of the agent and reduces the amount of agent required. The automatic rotating spray head is equipped with a Venturi tube and a perforated plate to ensure the agent dosing area. The control unit and the water quality monitoring module work together to determine the water quality status, and the dosing process is immediately initiated when standards are exceeded, requiring no manual intervention. This not only provides real-time response to pollution control but also reduces the frequency of manual inspections and operations, lowers maintenance labor costs, and improves the automation level of river management.
[0038] Example 2
[0039] Continue to refer to the appendix Figure 1 In this embodiment, the microbial agent dosing device at the river outlet includes a control unit 4, which is connected to a water quality monitoring module 5 and a dosing pump 3. The water quality monitoring module 5 is located underwater at the river outlet, and the dosing pump 3 is connected to an agent storage tank 1 and a delivery unit. The delivery unit is arranged along the riverbank and is equipped with four automatic rotating spray heads 2.
[0040] The core component of the control unit 4 is a PLC, which is connected to the water quality monitoring module 5. It is used to receive the detection signal from the water quality monitoring module 5 and regulate the dosing pump 3 to pump the culture agent in the bacterial agent storage tank 1 into the delivery unit. The bacterial agent is then added to the river through the automatic rotating spray head 2.
[0041] The water quality monitoring module 5 integrates multiple sensors, enabling real-time detection of COD, ammonia nitrogen, total phosphorus, and dissolved oxygen in the water at the river outlet, and transmitting the detection data to the control unit 4. In this embodiment, two water quality monitoring modules 5 are configured, each located at a different position along the river's flow direction.
[0042] The microbial agent storage tank 1 is used for the expansion of added microbial agents. It is made of corrosion-resistant material and has a built-in agitator to prevent sedimentation of the microbial agent, ensuring its stability and uniformity, which facilitates subsequent additions. Depending on the microbial community being added, various adjuvants are added to the microbial agent storage tank 1 to improve the expansion efficiency.
[0043] The dosing pump 3 connects the main delivery pipe 5 of the delivery unit and the inoculum storage tank 1. The dosing pump 3 can directly pump the inoculum from the inoculum storage tank 1 into the main delivery pipe 5 of the delivery unit. The dosing pump 3 can be automatically started and stopped by the control system, or it can be manually started and stopped by the control unit 4.
[0044] The delivery unit includes a main delivery pipe 5 and four branch delivery pipes 7 mounted on the main delivery pipe 5. The main delivery pipe 5 is located on the revetment at the river outlet and is positioned along the river's flow direction. Automatic rotating nozzles 2 are mounted at the ends of the branch delivery pipes 7. The automatic rotating nozzles 2 are arranged sequentially along the flow direction, with two water quality detection modules 6 positioned in the river area between the first and second nozzles, and in the river area between the third and fourth nozzles, respectively. The main delivery pipe 5 is directly fixed to the river revetment using a fixing bracket, securely securing the delivery unit while reducing vibration generated when the dosing pump 3 is turned on. In this embodiment, the main delivery pipe 5 and the branch delivery pipes 7 are made of SS304 stainless steel and connected by threaded unions 8. In other embodiments, the main delivery pipe 5 and the branch delivery pipes 7 may use other materials to ensure effective delivery of the bacterial agent while minimizing damage and reducing subsequent maintenance costs.
[0045] In this embodiment, the main conveying pipe 5 is fixed to the revetment at the river outlet by a fixing bracket, and the branch conveying pipe 7 is horizontally arranged and connected to the main conveying pipe 5. An automatic rotating spray head 2 is provided at the other end of the branch conveying pipe 7 that is connected to the main conveying pipe 5.
[0046] In this embodiment, the automatic rotating spray head structure is the same as in Embodiment 1. The perforation rate of the perforated plate is 50%.
[0047] The difference between this embodiment and Embodiment 1 is that there are more branch pipes, the river area covered is larger, and the water quality monitoring modules are arranged in zones to improve the accuracy of river water quality monitoring data.
[0048] Example 3
[0049] Continue to refer to the appendix Figure 1 In this embodiment, the microbial agent dosing device at the river outlet includes a control unit 4, which is connected to a water quality monitoring module 5 and a dosing pump 3. The water quality monitoring module 5 is located underwater at the river outlet, and the dosing pump 3 is connected to an agent storage tank 1 and a conveying unit. The conveying unit is arranged along the riverbank and is equipped with six automatic rotating spray heads 2.
[0050] The core component of the control unit 4 is a PLC, which is connected to the water quality monitoring module 5. It is used to receive the detection signal from the water quality monitoring module 5 and regulate the dosing pump 3 to pump the culture agent in the bacterial agent storage tank 1 into the delivery unit. The bacterial agent is then added to the river through the automatic rotating spray head 2.
[0051] The water quality monitoring module 5 integrates multiple sensors, enabling real-time detection of COD, ammonia nitrogen, total phosphorus, and dissolved oxygen in the water at the river outlet, and transmitting the detection data to the control unit 4. In this embodiment, three water quality monitoring modules 5 are configured, each located at a different position in the direction of river flow.
[0052] The microbial agent storage tank 1 is used for the expansion of added microbial agents. It is made of corrosion-resistant material and has a built-in agitator to prevent sedimentation of the microbial agent, ensuring its stability and uniformity, which facilitates subsequent additions. Depending on the microbial community being added, various adjuvants are added to the microbial agent storage tank 1 to improve the expansion efficiency.
[0053] The dosing pump 3 connects the main delivery pipe 5 of the delivery unit and the inoculum storage tank 1. The dosing pump 3 can directly pump the inoculum from the inoculum storage tank 1 into the main delivery pipe 5 of the delivery unit. The dosing pump 3 can be automatically started and stopped by the control system, or it can be manually started and stopped by the control unit 4.
[0054] The delivery unit includes a main delivery pipe 5 and six branch delivery pipes 7 mounted on the main delivery pipe 5. The main delivery pipe 5 is installed along the riverbank, and an automatic rotating spray head 2 is installed at the end of each branch delivery pipe 7. Three water quality detection modules 6 are respectively installed in the river area between the first and second spray heads, the river area between the third and fourth spray heads, and the river area between the fifth and sixth spray heads. The main delivery pipe 5 is directly fixed to the riverbank using a fixing bracket, which securely fixes the delivery unit and reduces vibration generated when the dosing pump 3 is turned on. In this embodiment, the main delivery pipe 5 and the branch delivery pipes 7 are made of SS304 stainless steel and are connected by threaded unions 8. In other embodiments, the main delivery pipe 5 and the branch delivery pipes 7 may use other materials to effectively deliver the bacterial agent while being less susceptible to damage and reducing subsequent maintenance costs.
[0055] In this embodiment, the main conveying pipe 5 is fixed to the revetment at the river outlet by a fixing bracket, and the branch conveying pipe 7 is horizontally arranged and connected to the main conveying pipe 5. An automatic rotating spray head 2 is provided at the other end of the branch conveying pipe 7 that is connected to the main conveying pipe 5.
[0056] Reference Appendix Figure 2 and 3 In this embodiment, the automatic rotating spray head structure is the same as in Embodiment 1. The perforation rate of the perforated plate is 60%.
[0057] The difference between this embodiment and embodiment two is that the number of branch pipes and water quality monitoring modules is further increased, the opening rate of the perforated plate is improved, the entire device is arranged along the river outlet, the area for adding bacterial agent is further increased, and the accuracy of river water quality monitoring data is further improved.
[0058] The purpose of this invention is to provide a microbial agent dosing device for river outfalls. This device is linked to a water quality monitoring module near the outfall. By installing the device on the revetment near the outfall, the water quality monitoring module monitors the water quality in real time. When water quality indicators exceed standards, the system automatically activates, combining with an automatic rotating spray head to flexibly adjust the agent dosage based on actual conditions such as water flow direction and pollutant diffusion range. This achieves precise dosing of the microbial agent, ensuring efficient coverage of highly polluted areas near the outfall. By enhancing the contact efficiency between microorganisms and pollutants, and improving the degradation capacity of pollutants near the outfall, this invention not only effectively solves the serious pollution problem near the outfall but also enables intelligent and dynamic response in pollution control, thereby improving river water quality and promoting the restoration of the river ecosystem.
[0059] The above description is a preferred embodiment of the present utility model, used to illustrate the present utility model and its effects. It should be noted that, for those skilled in the art, for the purpose of making foreseeable improvements and modifications without departing from the principles of the present utility model, such improvements and modifications are also within the protection scope of the present utility model.
Claims
1. A device for adding microbial inoculant to a river outlet, characterized in that, It includes a control unit, which is connected to a water quality monitoring module and a dosing pump. The water quality monitoring module is located underwater at the river outlet. The dosing pump is connected to a bacterial agent storage tank and a delivery unit. The delivery unit is arranged along the riverbank and is equipped with several automatic rotating spray heads.
2. The microbial agent dosing device for river outlets according to claim 1, characterized in that, The conveying unit includes a main conveying pipe and several branch conveying pipes installed on the main conveying pipe. The main conveying pipe is installed along the riverbank, and the automatic rotating spray head is installed at the end of the branch conveying pipes.
3. The microbial agent dosing device for river outlets according to claim 2, characterized in that, The main conveying pipe is fixed to the riverbank via a fixed bracket.
4. The microbial agent dosing device for river outlets according to claim 2, characterized in that, The main conveying pipe and the branch conveying pipe are made of stainless steel and are connected by threaded unions.
5. The microbial agent dosing device for river outlets according to claim 1, characterized in that, The water quality monitoring module performs real-time detection of COD, ammonia nitrogen, total phosphorus and dissolved oxygen concentrations in the water at the river outlet, and transmits the detection data to the unit.
6. The microbial agent dosing device for river outlets according to claim 1, characterized in that, The automatic rotating spray head includes a spray body connected to a spray pipe. A limiting ring is provided on the outside of the spray body, and a reversing device is provided on the outside of the spray pipe. A rocker arm is rotatably connected to the spray pipe, and a rocker arm shaft and a spring are provided inside the rocker arm. A striking block is provided on the outside of the spray pipe, and the striking block abuts against the side of the rocker arm. The rocker arm is provided with a baffle plate and a guide plate, and the baffle plate and the guide plate are arranged in a straight line with the nozzle of the spray pipe. The rocker arm is provided with a flipping hook, and the flipping hook is located above the reversing device.
7. The microbial agent dosing device for river outlets according to claim 6, characterized in that, The nozzle is equipped with a venturi tube inside, and the small-diameter opening end of the venturi tube faces the nozzle head of the nozzle. The constriction section of the venturi tube is equipped with an air pipe, which passes through the nozzle and connects to the outside. The constriction ratio of the venturi tube is 2.5:
1.
8. A river outlet microbial agent dosing device according to claim 6 or 7, characterized in that, The nozzle has a perforated plate inside, which is located near the nozzle head.
9. A river outlet microbial agent dosing device according to claim 8, characterized in that, The perforated plate has an equilateral triangular opening shape, and the perforation rate of the perforated plate ranges from 50% to 60%.
10. A microbial agent dosing device for river outlets according to claim 1, characterized in that, The microbial agent storage tank is equipped with a stirrer.