What are the precautions for the use of sewage treatment chemical metering pumps?

Sewage treatment agent metering pump is the core component in the dosing device, in order to prevent the sewage treatment drug metering pump from malfunctioning, resulting in the dosing device can not work, so in general, the automatic dosing device is selected double pump alternate work design structure, a pump failure, can start a standby pump, so as not to affect the continuous operation of the automatic dosing device. It is common for the dosing pump to fail, and the following is how to prevent the burning of the stroke positioning motor of the sewage treatment chemical metering pump.

1.Remove the 4 screws that hold the pump head in place. The screws are located on the back of the metering pump.

2.See if the drain pipe is installed and the drain valve is closed? During the drain phase of the metering pump, the drain valve needs to be opened. Note: Not all metering pumps have a drain valve.

3.Install the pump head after the diaphragm has been installed and the backplate drain hole has been placed in a vertical position. Make sure that the suction valve is aligned with the drain drain hole and the screws at the fluid end are aligned with the corresponding 4 holes.

1.The chemical metering pump should be installed in a ventilated, dry, non-corrosive gas and suitable temperature place.

2.The chemical metering pump should be wired correctly in accordance with the instructions and the grounding should be reliable.

3.The inlet and outlet pipelines of the pharmaceutical metering pump should be firmly connected with the pipeline system, and there should be no water leakage. 4.The motor of the chemical metering pump should be checked regularly to keep it clean and prevent dust from entering.

5.The pump head of the chemical metering pump should be cleaned regularly to prevent clogging.

6.The medicine box of the drug metering pump should be cleaned regularly to prevent the medicine from agglomerating. 7.The agent of the pharmaceutical metering pump should be correctly prepared in accordance with the instructions and should not be used in excess.

8.During the use of the pharmaceutical metering pump, attention should be paid to the operation of the pump, and if there is any abnormality, it should be stopped for inspection in time. 9.

The maintenance of the pharmaceutical metering pump should be carried out in accordance with the requirements of the manual, and the wearing parts should be replaced regularly. 10.During the use of the pharmaceutical metering pump, attention should be paid to safety to prevent accidents.

The use of metering pumps should pay attention to the following aspects:

1. The inlet pipeline must be equipped with a filter, and the filter pore size must be determined according to the maximum particle size of the pump. Prevents clogging and wear on the pump.

2. The minimum liquid level of the inlet pipeline is better than the height set by the pump, of course, some diaphragm pumps can be self-priming, from the perspective of pump safety, it is better to put it at a low liquid level if conditions permit.

3. Dampers and safety valves should be added to the outlet pipeline to stabilize the liquid flow and pressure of the pipeline and ensure the stability and accuracy of the drug delivery.

4. For the transportation of high viscosity substances such as PAM, the concentration of chemical drugs should not be too large. And clean the pump lines and pump heads regularly.

5. For adjustable metering pumps, some can be adjusted synchronously during operation. Some need to be stopped for adjustment. You should check before you do it.

6. A calibration column should be set up in the inlet pipeline of the metering pump, which is used to calibrate the flow rate of the metering pump on a regular basis.

7. When the metering pump is running, the shaking of the pipeline should be avoided as much as possible. The installation of the dosing pump should be smooth and stable.

8. The rotating parts are regularly filled with lubricating oil.

9. Diaphragm parts should be vulnerable parts, and spare parts should be available.

There are several types of pumps commonly used in sewage treatment.

1. Sewage lifting pump.

The main function of the sewage lifting pump is to pump the sewage from one pool to another, or from one sewage treatment link to another treatment link, so as to realize the transmission of sewage, which is used more in the sewage treatment process.

The sewage lifting pump is placed at the inlet of the sewage treatment plant, and the sewage transported by the sewage pipe network has a low water level, so it is necessary to use a sewage lifting pump to pump the sewage with a low water level to the subsequent treatment process equipment. Many wastewater treatment facilities are set up by elevation, so that the water level difference allows the sewage to flow freely and automatically to the subsequent facilities, thereby reducing energy consumption. Another function is to pump the treated sewage from the previous pool to the next pool for the next different sewage treatment process.

This kind of sewage lifting pump is mainly high lift and large flow, which meets the requirements of rapid water transportation and improves the efficiency of sewage treatment.

Second, the dosing pump.

The dosing pump is mainly to add sewage treatment agents to the sewage pool, so that the sewage treatment agents can neutralize some pollutants in the sewage, remove pollutants, and purify the water body.

The sewage treatment agent is prepared in the dosing box, stirred evenly by the stirrer, and then put into the solution box. The dosing pump sucks the liquid medicine from the solution tank, and then mixes it with the water of the working medium and transports it to the polluted water body to achieve the purpose of dosing.

The physical and chemical properties of the sewage treatment agent in contact with the dosing pump are different, and the corresponding dosing pump is selected according to the characteristics of the dosing agent, and the stability and accuracy of the dosing process should also be considered.

3. Sludge pump.

The main function of the sludge pump is to extract the sludge produced after sewage treatment from the bottom of the pool for sludge treatment.

Sludge pumps are mainly used in tanks that produce sludge, such as sedimentation tanks, sludge tanks, biochemical tanks, filtration tanks, etc. The sludge pump pumps the generated sludge to the filter press, which removes the water in the sludge to achieve sludge treatment. The pressure of the sludge pump determines the water content of the sludge pumped by the sludge pump, which has a direct impact on the sludge treatment of the subsequent filter press.

The commonly used dosing pumps for sewage treatment include corrosion-resistant self-priming pumps, corrosion-resistant magnetic pumps, metering dosing pumps, and pneumatic diaphragm pumps.

According to the chemical properties of the chemical liquid, the pump with large flow rate is generally made of acid and alkali corrosion resistant materials, PP, PVDF, etc. Magnetic pumps and self-priming pumps are generally used for flow rates of 1 ton, and metering dosing pumps or diaphragm dosing pumps are generally used for flow rates of less than 1 ton.

The pneumatic pump is generally flammable and explosive or the specific gravity is exceeded, and the use of pneumatic diaphragm pump is more economical.

Sewage treatment chemical metering pumps are widely used in the field of pickling wastewater treatment, and there are many pickling media used for pickling wastewater treatment, such as hydrochloric acid, nitric acid, hydrogen sulfate and fluoric acid.

Performance Advantages of Meibao Sewage Treatment Chemical Metering Pump:

1. Meibao sewage treatment agent metering pump adopts tooth energy deceleration and long service life.

2. The sewage treatment chemical metering pump is equipped with a foot valve check valve, which has better sealing.

3. This sewage treatment agent metering pump is a reciprocating diaphragm metering and dosing pump, which is small in size, saves installation space, and has a beautiful appearance.

4. High metering accuracy, manual control and adjustment, regardless of whether the pump is running or not, the flow can be adjusted in the range of 0-100.

5. Resistant to 10kg high pressure, flow rate up to 0-100L h, motor driven.

6. Material of the body and the liquid conveying part: PP, PVC, Teflon, SUS.

7. The stainless steel base is installed to ensure that the motor is waterproof and durable, and the appearance is more beautiful.

The metering pump used to add chemicals is generally a piston pump.

1. Corrosion: In the circulation of cooling water, the water is in good contact with the air in the automatic dosing device, which makes the dissolved oxygen in the water oversaturated, and the dissolved oxygen in the water will cause corrosion of metal pipes such as carbon steel and cast iron. 2. Scaling:

The water is continuously evaporated in the automatic dosing device, which greatly increases the salt content in the circulating water, and the calcium carbonate and carbonate in the water greatly increase, resulting in scaling on the surface of the pipeline and uneven surface heat exchange. 3. Slime scale: The cooling water absorbs a large amount of dust, sediment, microorganisms and other inorganic organic substances in the air, because the light, temperature and oxygen in the cooling tower are very suitable for the growth of bacteria and algae, so that the slime in the system increases and causes the harm of the system.

Sewage treatment dosing pump can be selected.

The dosing magnetic pump used in the chemical field adopts a magnetic drive without shaft seal design, which completely leaks and will not cause leakage and cause on-site pollution. The use of FRPP CFRPP and PVDF materials can withstand most chemical properties and is suitable for the transportation of various acids and alkalis. Rare earth permanent magnets are used to improve the rotation efficiency.

Mabel Handling Pump Customer Case Diagram.

Meibao environmental protection dosing magnetic pump has MSH series and MNX series, of course, the pump has different roles in different stages of liquid treatment, not only the use of dosing magnetic pump. Specifically, it is divided into these four categories: 1. It is called sodium hydroxide self-priming conveying lifting pump when conveying chemical liquids; 2. In the treatment of large flow liquid medicine, it is called sodium hydroxide magnetic discharge and dosing pump; 3. In the treatment of small flow liquid medicine, it is called sodium hydroxide metering and dosing pump; 4. It is called sodium hydroxide transfer circulation pump when the liquid medicine is circulated.

1.Find the pressure-flow curve corresponding to the high-pressure fan; If you look at the wrong curve, sometimes the selected product will not be usable;

2. According to the calculated pressure and flow, find the working curve above the working point that meets the corresponding pressure and flow rate at the same time on the curve chart; Then select the high-pressure fan model according to the working curve.

The most important thing to pay attention to is the technical parameters of the high-pressure fan: power, air volume and pressure. The most important technical parameters of the fan are these three, and the model can be selected after generally determining these three parameters. For example, the teakor model:

tb119 tb219 tb229 tb239 tb319 tb329 tb339

tb419 tb429 tb439 tb449 tb459 tb529 tb539