phosphate dosing system for industrial water treatment

Phosphate dosing system is suitable for processes that require precise dosing of phosphate chemicals, such as boiler water treatment, cooling water circulation systems, and other industrial scenarios where phosphate concentration needs to be regulated. Its automation features can significantly improve system operation efficiency and ease of operation, reducing manual intervention and errors.
Phosphate dosing system is of great significance to the stable operation of industrial systems, prolonging equipment life and reducing maintenance costs.

The whole set of phosphate dosing system is mainly composed of the following parts:

1. Solution tank: to store and dissolve phosphate chemicals.
2. Mixer: used to mix phosphate solution, to ensure the uniform distribution of chemicals.
3. Metering pump: precise dosage of phosphate solution, flow rate adjustment range of 0 to 100%.
4. Electrical control cabinet: control the operation of the whole device, support manual and automatic operation mode.
5. Valve and pipeline: used for drug delivery and flow rate adjustment.

Automatic control function:

1. Control principle: automatic control is based on the signal of phosphate meter, which is processed by frequency conversion device, PLC, upper computer or DCS system to realize automatic adjustment of metering pump speed and flow.
2. Signal type: Control input signal: the frequency converter receives standard 4-20mA signal, which is used to adjust the speed of metering pump.
   Feedback signal: The feedback of the running status of the metering pump is also a standard 4-20mA signal, which is convenient for monitoring and adjustment.
3. Monitoring and remote control:
   Condition monitoring: the running condition and fault signal of metering pump and mixer can be remotely transmitted to the upper computer or DCS system.
   Remote control: through the DCS or the host computer, the metering pump can be started and stopped remotely to simplify on-site operation.

Overflow material options according to corrosion resistance requirements:

1. Metal material: 316 stainless steel, 304 stainless steel, carbon steel.
2. Composite material: carbon steel lining (or plastic lining).
3. Plastic material: PE, PVC, etc.

phosphate dosing system Main application fields:

1. Thermal power plant
   Boiler water treatment: Prevent scaling and corrosion in boiler water system, ensure steam quality and equipment operation efficiency.
   Thermal system: Reduce deposits in heat exchangers and pipes by controlling the phosphate concentration in water.
2. Industrial circulating water system
   Cooling circulating water: In chemical, petroleum, metallurgy and other industrial cooling water systems, phosphate can be injected to prevent scaling in cooling towers and pipelines.
   Anti-corrosion: Form a protective film in the cooling water to extend the service life of the equipment.
3. Petrochemical industry
   In petroleum refining and chemical production, it is used to adjust the hardness of process water and anti-scaling effect.
4. Sewage treatment
   In industrial wastewater treatment, water quality is adjusted by phosphate to achieve the effect of reducing hardness and preventing secondary deposition.
5. Iron and steel industry
   In the heat treatment water system of iron and steel production, to prevent scaling and corrosion of cooling water equipment.
6. Paper industry
   In papermaking process water, it is used to prevent scaling in pulp pipelines and improve the operating efficiency of equipment.
7. Food and beverage industry
   Used in the production process of process water softening treatment, to ensure that the water quality meets the process requirements.
8. Nuclear power plant
   In the nuclear power plant steam generator and cooling water system, phosphate is used to maintain the chemical balance of the water to prevent corrosion and deposition of piping.

phosphate dosing system Functional summary:

1. Prevent scaling: avoid hardness ions (e.g. calcium, magnesium) from forming scale on equipment surfaces by forming precipitates in the water.
2. Control of corrosion: the addition of phosphate can form a protective film on the metal surface, reducing the impact of corrosion on the equipment.
3. Regulate water quality: Maintain the concentration of phosphate in the system to optimize the operating efficiency of heat exchange equipment and circulating water system.