The challenge

Upon arrival at the processing facility, the carrots are washed to remove remaining soil and other dirt and additionally often pass through a hydrocooler to increase preservation. Large volumes of water are required during this process. However, these vegetables grown in open ground can be contaminated with a variety of different pathogens such as Pseudomonas spp., E. coli, Salmonella, Yersinia, and Shigella. The number of pathogens in the water can accumulate rapidly and cross contamination can occur if the microbial contamination of the water is not monitored and disinfected accordingly.

Our solutions

The carrots are washed in two steps. During the first step recycled water is used that is treated with a cationic flocculant to eliminate solids and with a continuous dose of Huwa-San TR-50 for disinfection. During a second washing procedure, the carrots pass through a hydrocooler. The water of this hydrocooler is renewed daily and treated with Huwa-San TR-50.

Used products

Huwa-San TR-50 is a registered biocide. Use biocides safely. Before use, read the label and product information.

Biocides are governed by stringent regulatory frameworks, the particulars of which may differ across nations. In this instance, the application adheres entirely to the regulations of the respective country but may not necessarily comply with those of others. It is advisable to consult our in-house experts for guidance on particular applications.

Washing Water Disinfection of Sweet Potato

In collaboration with Roam Technology, the Spanish Laboratory Agrama evaluated the effectiveness of Huwa-San TR-50 in eliminating bacteria and fungi in the washing water of sweet potato.