Stationary and mobile units "DH-100" with automatic control for disinfection of drinking, circulating and waste water. Advantages: Instead of a common and more dangerous disinfectant chlorine , installations use a more economical, environmentally friendly and safe disinfectant: chlorine dioxide and chlorine. Opposite to chlorine, the mixture of chlorine dioxide with chlorine reacts without formation of toxic organochlorines by-products, has a much higher (up to 10 times) bactericidal activity, improves the taste of water, eliminates smell etc.