Chemical Dosing Guide in Industrial Facilities
1. Purpose
Chemical dosing is used to maintain water treatment, process control, and product quality. Dosing must be done in the correct amount and at the correct time.
2. Key Components
- Dosing pumps: Peristaltic, diaphragm, or piston pumps.
- Tanks and containers: Appropriate materials for safe chemical storage.
- Sensors: Measure parameters such as pH, chlorine, conductivity, and flow rate.
- Automation system: SCADA or PLC for dosing control and data recording.
3. Dosing Methods
- Constant dosing: A fixed amount of chemical is continuously delivered.
- Proportional dosing: Dosing is adjusted according to flow rate or flow.
- Timed/cyclic dosing: Chemicals are applied at specific time intervals.
- Sensor-controlled automatic dosing: Real-time adjustment based on parameters.
4. Chemical Selection and Concentration
- The effectiveness and compatibility of the chemical are important.
- The recommended optimal concentration should be used.
- Incorrect concentration leads to chemical waste, equipment damage, and loss of quality.
5. Maintenance and Control
- Daily: Pump operation, tank levels, sensor accuracy.
- Weekly: Inspection of pipes, valves, hoses, and pump cleaning.
- Monthly: Sensor calibration, diaphragm/pump part inspection.
- Annually: System performance testing and comprehensive maintenance.
6. Safety Precautions
- Use of PPE (gloves, goggles, chemical-resistant clothing).
- Chemical storage and labeling standards.
- Eyewash and shower stations.
- Alarm and shut-off systems.
- Operator training and emergency plans.
7. Risks of Incorrect Dosing
- Reduced product quality.
- Chemical waste and increased costs.
- Equipment corrosion and scale formation.
- Environmental pollution and legal penalties.
- Operator safety risks.
8. Advantages
- Precise dosing and stable processes.
- Chemical savings and cost control.
- Equipment protection and extended lifespan.
- Data tracking and process optimization.
- Increased operator safety.
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