Chemical Dosing Equipment Operation Guide

Chemical dosing system is a type of chemical water treatment equipment that has been widely used in the fields of power, construction, and municipal water treatment both domestically and internationally. It consists of a dosing tank, metering pump, and automatic control system installed on a base. The outlet of the metering pump is connected to the dosing pipeline, and the inlet and outlet of the dosing tank are connected to the water inlet pipe. The power supply and instrument signals are sent to the control cabinet to achieve the overall combination of the dissolution and metering functions.

During the use of the dosing system, certain rules need to be followed to avoid situations that may cause the metering pump to malfunction. The correct operating procedure can enable the dosing device to start working quickly. We have compiled a comprehensive set of instructions for your reference.

Installation Notes for Dosing Equipment

• Before installing the equipment, familiarize yourself with the equipment structure and the provided drawings. Verify the foundation, equipment pipe orientation, and the docking positions of various accessories according to the drawings.
• First, open the packaging box, remove the equipment from the box, and then proceed with on-site installation.
• If there is no packaging, the equipment can be directly installed in place.
• Install the equipment's pipelines according to the product installation diagram, including the inlet pipe, outlet pipe, and overflow drain pipe.
• Take out the matching instruments from the packaging box and install them according to the product's appearance diagram, ensuring that the instruments are in good condition.
• This equipment is equipped with an electrical control cabinet (referring to the equipment's standard configuration). Users only need to connect the power cord to the input terminal of the air switch in the control cabinet.

Analysis of the Advantages of Dosing Equipment

• Dosing equipment is designed with different processes to prepare solutions of various solid and liquid chemical substances, which are then accurately dosed using metering pumps to meet various design requirements, such as descaling, deoxygenation, coagulation, acidification, and alkalization.
• The dosing process can be operated manually or automatically controlled through various electrical appliances and instruments such as a PC, magnetic flip liquid level gauge, pH meter, stroke controller, and frequency converter, making the dosing device an electromechanical integrated product.
• The dosing amount and dosing pressure of the dosing device can be selected according to the needs of the industrial process by choosing a suitable metering pump.

Installation and Operation Steps of Dosing Device

1. Connect the pipelines of the dosing device, then check and tighten each threaded interface to prevent fluid leakage.
2. Preparations before starting the dosing device - adjust the solution concentration.
3. For the first dosing, the dosing tank should be cleaned: close the bottom drain valve of the dosing tank during cleaning, open the drain valve after flushing with water to empty the water, and start dosing after cleaning twice.
4. Adjust the dosing stroke of the metering pump: Rotate the metering pump stroke adjustment knob counterclockwise to the corresponding scale.
5. Preparation: Check and close the drain valve at the bottom of the dosing tank. Based on the effective volume inside the dosing tank and the actual output of the metering pump, calculate the dosage of the chemical. Add the chemical through the dosing tank's inlet, open the water inlet valve to dilute the chemical to the highest liquid level mark, and close the water supply valve.
6. Turn on the agitator motor in the dosing tank, mix the chemical evenly, and then turn off the motor.
7. Open the inlet and outlet valves of the metering pump, turn on the metering pump switch, and add the chemical before the security filter. After the reverse osmosis system is shut down, close the metering pump.
8. Regularly inspect the dosing system for leaks and promptly resolve any leaks. Check if the dosing pump's dosage is accurate, and verify if the decrease in the liquid level of the dosing tank matches the calculated dosage from the dosing pump. If it is not accurate, promptly recalculate and adjust.
9. Record and check monthly if the total water intake matches the dosing amount.
10. When replenishing water in the dosing tank, be careful not to exceed the maximum liquid level.

Troubleshooting and Solutions for Dosing Equipment