I. Overview

Zeyan Zongheng (Shandong) Environmental Technology Co., Ltd., headquartered in Weifang City, Shandong Province, is a high-tech environmental water treatment enterprise that integrates scientific research, manufacturing, and services. The company specializes in producing chlorine dioxide generators, chlorine dioxide dosing devices, integrated water treatment systems, automated PAM preparation and dosing systems, and automated PAC dosing equipment; it also provides comprehensive one-stop services encompassing the supply of specialized raw materials for chlorine dioxide dosing devices, as well as the integrated procurement, installation, and commissioning of water treatment equipment.

The ZY-type chlorine dioxide doser is a product developed by our company through years of exploration, innovation, and practical application, based on in-depth research into advanced technologies of similar products both domestically and internationally, and utilizing state-of-the-art manufacturing processes along with specialized high-quality materials. This product is characterized by its pure output, high conversion efficiency, user-friendly operation, low operating costs, low failure rate, and long service life; its overall performance ranks among the leading levels in the domestic market.

II. Structural Characteristics and Operating Principle

The ZY-type chlorine dioxide dosing device consists of a drug storage system, a chemical feeding system, a dosing system, a feed shortage protection system, and an electrical control system.

Operating Principle: Fill the medication storage tank with an appropriate amount of tap water and add an appropriate quantity of disinfectant solution. Then, connect the power supply and turn on the equipment to initiate automated dosing of the disinfectant solution; the solution is then delivered into the water stream to be disinfected via the dosing system (the dosage delivered by the metering pump can be adjusted according to requirements).

III. Equipment Installation

(1) Installation Requirements

1. The equipment should be installed indoors, away from direct sunlight; the operating temperature range is 5°C–40°C.

2. Due to the strong corrosiveness of disinfectants, when selecting the installation location for the equipment, it should be avoided to place it in the same room as other electrical equipment; instead, a dedicated equipment room should be established.

3. The floor of the equipment room shall be paved with cement (it is preferable to install floor tiles), and a water supply for flushing as well as a drainage system shall be provided.

4. The equipment room should be well-ventilated; since chlorine dioxide gas has a greater specific gravity than air, an exhaust fan should be installed at the bottom of the walls.

5. The equipment room shall be equipped with running water supply.

6. The equipment room shall be equipped with necessary lighting facilities and one 220 V, 10 A power switch.

(2) Installation Procedure and Precautions

1. Installation Program

(1) Determine the disinfectant dosing point and the equipment installation location.

(2) Install the dosing pipeline and connect it to the dosing point.

(3) Place the equipment in the appropriate position and connect the backpressure valve to the dosing pipeline.

(4) Install the water inlet pipe.

2. Installation Precautions

(2) Equipment Installation

The equipment installation location should generally be chosen near a water supply source and in a position that is convenient for operation. During installation, ensure that sufficient maintenance space is reserved to facilitate upkeep.

For components that were pre-installed at the time of factory delivery, re-inspect them after unpacking; any loose components should be tightened.

The connection between the water supply and the equipment should preferably be made using rigid PVC piping.

IV. Usage, Operating Procedures and Precautions

1. Pre-use preparation and inspection

Pre-use inspection items:

① Check whether any threaded connections are loose; if so, tighten them.

② Fill the water tank completely from the water inlet (failure to fill the tank will prevent power supply; otherwise, the metering and circulation systems may be damaged by overheating).

③ Power on the equipment and check whether electrical components, such as the metering pump, are operating normally.

④ Operating the machine without load is strictly prohibited.

2. Equipment Operation

1. Start

First, open the inlet valve; once the liquid level reaches the upper end of the visible level gauge, close the inlet valve.

Please check again for any water leakage.

If no abnormalities are detected, add an appropriate amount of the chemical to the dosing port.

Turn on the device's power supply, open the circulation pump valve (unless for maintenance purposes, it is advisable to keep it permanently open), and start the material circulation system. Operate the chemical dosing process according to the specific chemical being used.

After completing the material feeding process, start the metering pump; if air is present in the metering pump pipeline, discharge the air first and then check whether the metering pump is operating normally.

3. Equipment output adjustment

Adjust the equipment's output based on actual consumption; this is primarily achieved by controlling the dosing flow rate of the metering pump – the greater the dosing flow rate, the higher the output; conversely, the lower the output.

Note: The manual frequency adjustment of the metering pump must be performed only while the pump is in operation; it should not be adjusted when the metering pump is stopped.

4. Power off

Press the screen off button.

Note: If the device will not be used for an extended period, turn off the power switch.

5. Inspection

During equipment operation, regular inspections should be conducted; any abnormal conditions identified should be addressed promptly. If a strong odor is detected in the equipment room or at the exhaust pipe, the dosing metering pump should be shut down immediately.

6. Equipment Cleaning

After prolonged operation of the equipment, the amount of sediment in the reactor may increase, adversely affecting the equipment's production yield; therefore, the reactor should be cleaned regularly—typically once per year. During cleaning, pour clean water into the water inlet, let it stand for 30 minutes, then drain the water through the discharge port; repeat this process several times until the reactor is thoroughly cleaned.

7. Metering pump maintenance

The metering pump must be protected against water ingress during operation or when cleaning the equipment. After filling the raw material tank, check whether any gas has entered the metering pump's delivery hose; if so, drain it promptly. Regularly inspect the metering pump for any leaks; if a leak is detected, tighten the bolts immediately or perform maintenance (refer to the metering pump's instruction manual for details).

8. Important Notes:

1. The metering pump should be protected against water ingress.

2. The equipment casing is made of PVC plastic; avoid impacts or compression, and protect it from direct sunlight.

3. During winter, take precautions against freezing and implement necessary anti-freezing measures to prevent damage to equipment and chemical dosing pipelines; the equipment room should be kept dry, shielded from light, and well-ventilated. The ambient temperature in the equipment room should range from 5°C to 40°C.

4. Before powering on the equipment, ensure that it is fully filled with water.

5. The chemical is corrosive; operators should wear protective gloves.

6. The chemical solution possesses strong oxidizing properties; the plastic hoses and sealing rings of the equipment are prone to aging and should be replaced regularly.

7. Please read the user manual carefully.

V. Common Faults and Troubleshooting Methods – Part 1: