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Chlorine Gas Dosing System Retrofit for Dairy Factory

Waikato, New Zealand

Chlorine Gas Dosing System Retrofit for Dairy Factory

Waikato, New Zealand

Waikato Dairy Manufacturer
Plant Capacity
Plant Capacity
170 m3/day
Water Source
Water Source
Reservoir Water, River Water
Water Quality Issue
Quality Issue
Disinfection Integration and Compliance

Customer Need

Chlorine Gas Dosing System for Reliable Water Disinfection

A Waikato dairy factory needed a chlorine gas dosing system integrated into their existing water treatment infrastructure. This system ensures efficient water disinfection crucial for dairy operations, including cleaning, sanitation, providing potable drinking and process water.

Chlorine gas effectively eliminates harmful microorganisms, while leaving a residual disinfectant within the distribution network and water storage tanks. Its use over sodium hypochlorite reduces the amount of chlorates and perchlorates by-products generated in the water. This implementation aids the factory in maintaining hygiene standards, meeting regulatory requirements, and enhancing water treatment efficiency.

What We Did

Supplied and installed a new chlorine gas dosing system

FILTEC leveraged the dairy factory’s existing water treatment structure to integrate a new chlorine gas dosing systemThe chlorine gas dosing system supplied by FILTEC ensures the rapid and effective disinfection of the water supply at the dairy factory.

With carefully controlled dosage levels, the system efficiently combats potential hazards posed by harmful microorganisms, providing a safe and sanitised water source for the various processes within the factory. 

Maintained a Residual Disinfection of Chlorine in Water Supply

One of the key advantages of the chlorine gas dosing system is its ability to maintain a residual disinfection of chlorine in the water supply while minimising the amounts of chlorates and perchlorates that are formed as by-products of chlorine disinfection. This residual disinfection helps to continuously protect the water against any potential microbial contamination throughout the distribution system.

This ensures the water at the dairy remains safe and free from harmful pathogens and complies to New Zealand Drinking Water Standards. The residual chlorine is also used to produce a catalytic reaction that removes dissolved iron and manganese from the water. 

Provided Consistent Disinfection Levels and Reduced Maintenance

The integration of a chlorine gas dosing system into the dairy factory’s water treatment infrastructure has led to cost savings and reduced maintenance efforts. Unlike sodium hypochlorite, chlorine gas doesn’t degrade over time, resulting in fewer drum changes. Supplied by FILTEC, the system offers adjustable dosage control for consistent disinfection, accommodating varying water quality and flow rates.

The chlorine gas dosing system complies with New Zealand drinking water standards, ensuring that the water used in the dairy factory meets the necessary quality within the standards for public consumption and processing.

The Result

Strengthened Disinfection Practices and Improved Operational Efficiency

The chlorine gas dosing system retrofit by FILTEC has been a transformative addition to the Waikato dairy factory’s water treatment infrastructure.

It has strengthened water disinfection practices, achieved compliance with regulatory standards, improved operational efficiency, and offered long-term advantages for the factory. The successful implementation of this system serves as a model for other dairy factories seeking reliable and sustainable water disinfection solutions or iron and manganese precipitation methods.


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