Dairy Plus in Thailand Replaces Chlorine Disinfection With Hanovia UV

MUMBAI, September 18, 2014 /PRNewswire/ --

Important Note: This press release is only meant for the Indian market. Any release outside India is not authorised.

UV Offers Clean, Environmentally-friendly Alternative With no After-taste 

Dairy Plus Co. Ltd. in Thailand has replaced its chlorine-based disinfection system with medium pressure UV technology from Hanovia. The company decided to reduce high levels of chlorine dosage throughout the process because it was proving ineffective at removing all microorganisms, particularly in the rainy season. It was also producing an after-taste in the product.

Photo 1: http://www.halmapr.com/hanovia/dairy-plus-1.jpg

Water to the plant is from two sources: city water and deep well water. The chlorine is only dosed at the raw water feed level, firstly after the clarifier for pre-chlorination and then some low concentration dosing after the softener.

"The incoming city water in particular has a high microbial contact - often as much as 20,000 cfu/ml in the rainy season. At these times, high chlorine doses of even 8ppm were still resulting in microbial concentrations over 6,000 cfu/ml. Something therefore had to be done, and that's where UV was able to help," commented Ying Xu, Hanovia's Asia-Pacific Sales Manager.

"UV, which is a non-chemical disinfection process, was brought to the attention of Dairy Plus by our local distributor. When Dairy Plus saw the advantages of our medium pressure UV systems, which effectively remove microorganisms without any problems of after-taste or re-infection, the company decided to switch from chlorine to UV as its main disinfection method," continued Miss Xu.

Five Hanovia UV systems are installed at the plant - four duty and one standby. Two units disinfect clean-in-place (CIP) water and two are used for treating dairy mixing water. Each UV system treats up to 130m^[3]/hour of water. As mentioned there are two sources of raw water being used with two feeds coming out of the city water source.

City water source: (two feeds) 

Feed 1: City water > Clarifier > Sand filter > Carbon Filter > Chlorination > Storage tank  

Feed 2: City water > UF Filter > Chlorination > Storage tank 

Storage tank (Feed 1 combined with Feed 2) > Softener No.1 > Low Dosed Chlorination > Bag Filter > Storage tank of Softener No.1 > UV1 > UV2 > CIP (Clean-in-place) 

Deep well water: (one feed) 

Deep well water > Deion filter > Carbon filter > Chlorination>Storage Tank > Softener No.2 > Low Dosed Chlorination > Bag Filter > Storage Tank > UV3 > UV4 > Mixing with final product 

Bacteria targeted for reduction include E. coli and many other common water-borne coliforms; the expected level of bacterial reduction is a total plate count of <50 cfu/ml.

"One of the main reasons Dairy Plus selected Hanovia in particular was down to the efforts of our local distributor, who helped resolve a number of initial complications. Our products are also recognised as offering the most advanced technology for high purity food and beverage applications like this," added Miss Xu.

"Since our systems were installed, the customer is very satisfied with their performance, reporting that the units are running well and producing excellent disinfection results. The company is particularly impressed by the low maintenance costs, the high energy output of the systems, and the fact that the frequency of CIP procedures has been dramatically reduced, meaning less down-time of the manufacturing process," Xu concluded.

For more details contact Mr.Gunvinder Bhogal; Tel: +44(0)1753 515300, e-mail: [email protected]; Website: http://www.hanovia.com 

About Dairy Plus 

Dairy Plus Co. Ltd. produces and distributes UHT dairy products across Thailand. It is part of the Dutch Mill Group which accounts for 20% of Thailand's dairy produce output.

About Hanovia 

Based in the United Kingdom, with a worldwide distributor network, Hanovia is a world leader in UV disinfection technology for industrial applications. With over 85 year's experience in the design, development, manufacture and distribution of UV systems worldwide, Hanovia has been supplying systems for pool water treatment since 1993. Hanovia is a subsidiary of Halma p.l.c.

For further news stories from Hanovia and to subscribe to the Hanovia RSS News Feed, please visit the Hanovia News Blog.

About Halma 

Halma, the leading safety, health and environmental technology group is a public company listed on the London Stock Exchange and has over 4000 employees in 40 subsidiaries worldwide. Halma's subsidiaries make products that protect lives and improve the quality of life for people through innovation in market leading products which make its customers safer, more competitive and more profitable. These subsidiaries are assisting India's economy in areas such as energy, manufacturing, healthcare, water and waste treatment, construction and transport. Halma has a hub office in Mumbai.

For further news about Halma in India and to subscribe to the Halma India RSS News Feed, please visit our blog

Media Contact: Sunil Balan, [email protected], +91-7738161211, Marketing Manager, Halma India