DAIRY EQUIPMENT CLEANING BY OZONATION

The development of technology and means of cleaning milking equipment allowing to minimize the use of synthetic surfactants and other chemicals, is an urgent task in view of solving problems of improving milk quality. Ozonation is a promising eco-friendly method of water treatment, allowing to effectively combat a large number of different pollutants of artificial and natural origin with simultaneous disinfection of water. To study the possibility of using ozonation in the technology of cleaning milking equipment with water of different hardness, the following modern detergents were taken: ЩМС-5 (patented by RSAU-MTAA), МИГ-МД (Russia, Penza), Chloracept D (USA), Dayrial (France). The authors propose a method for cleaning the surface of stainless steel 08Х10НТ1 from milk residues by ozonizing the washing solution. In laboratory conditions, they experimentally determined the relationships between the cleaning coefficients and the hardness of water. In cleaning with ozonated solutions at a concentration of 0.5% and a temperature of 40...70°С in soft water (hardness Ж = 1...3ᵒ), all the studied detergents showed high cleaning efficiency (the cleaning coefficient of more than 90%). In water of medium hardness (Ж = 6±1°), the cleaning coefficients demonstrated the following values: ЩМС -5 (ozonized solution) – 93%; МИГ-МД - 89%; Dayryal – 90%; and Chloracept D – 90%. In hard water (Ж = 12ᵒ) under the same conditions, the cleaning coefficients featured the following values: ЩМС-5 (ozonized solution) – 92%; МИГ-МД – 83%; Dayryal – 87%; and Chloracept D – 84%. In very hard water (Ж = 15ᵒ), the following results were obtained: ЩМС-5 (ozonized solution) – k = 91%; МИГ-МД – k = 79%; Dayryal – k = 85%; and Chloracept D – k = 80%. Basing on the conducted research, the authors propose the following cleaning modes for the ЩМС-5 detergent using ozonation: washing solution concentration – 5 g/l; temperature – 40°C; cleaning time – 10-15 minutes; water hardness – up to 15 mg-eq/l.