How to disinfect hot springs?

In high-risk pathogenic microorganism infection.

In addition to feces, pathogenic microorganisms in hot springs may also come from human saliva, wounds and mucosal tissues. For example, a bather who has a cold, illness or injury may release pathogens from wounds or mucosal tissues and directly pollute the water in hot spring pools. If someone directly touches these hot springs with pathogenic microorganisms, it may cause infection. In addition, some bacteria or protozoa will enter the human body and cause diseases. For example, the warm, humid and nutritious environment of hot springs is very suitable for the breeding of Legionella, Pseudomonas aeruginosa and amoeba. This microorganism often invades people with other diseases or poor immune system. The abstract of the conclusion of the study on Legionella awareness and hot spring consumption behavior of consumers in Taiwan Province Province points out that:

Most consumers think that soaking in hot springs is good for health.

Female consumers think that soaking in hot springs can reduce weight.

Most consumers can't accept hot springs containing bacteria.

Consumers will stop spending as soon as they find bacteria in hot springs.

The last thing consumers can't accept is adding chlorine to hot springs.

There are 2 1% hot springs containing Legionella in the research sample.

Take Japan as an example. In 2002, a large-scale Legionella infection broke out in Japan. Medical record 166, all caused by soaking in hot springs. After tracing, it was found that the source of infection was hot spring water that ordinary consumers thought had health-preserving effect. So the Japanese government began a large-scale investigation and confirmed that more than 17% of hot springs had Legionella. Therefore, according to the recommendation of the World Health Organization (WHO), the Japanese government explicitly added Legionella inspection items to the hot spring water quality standards, and therefore listed hot springs as the key targets of Legionella prevention and control in Japan.

Generally speaking, for hot spring operators, when there is enough hot spring water, they mistakenly think that they can replenish or replace a lot of fresh hot spring water for cleaning, but they don't take into account the bacterial pollution and reproduction brought by the original soup, raw water, bathers and dust in the air. People who lack hot spring water often adopt the method of circulating filtration and heating because of the shortage of spring water, but they don't consider that heating will cause the formation of biofilm in the pipeline and the reproduction of bacteria. Generally speaking, if hot springs with bacteria are found, they must be disinfected with chlorine to ensure the safety of consumers. However, China people's consumption habits and hardware construction of hot springs are deeply influenced by Japanese bathing culture, and the idea of longing for natural hot springs is deeply rooted, and they are afraid that using disinfectants will destroy the uniqueness of hot springs, which makes it difficult to maintain the public health of hot springs. Since the outbreak of legionnaires' disease in hot springs in Japan, the cultural tradition of overall bathing and health preservation has been impacted unprecedentedly. Therefore, Japan's Ministry of Environment and Provincial Affairs and Japan's Central Hot Spring Research Institute actively invest in the research on disinfection and sterilization of hot spring water quality, and actively promote sterilization methods that do not damage the characteristics of hot springs under the framework of the classification of disinfection and fungicides of the World Health Organization (WHO), especially focusing on non-oxidizing disinfection and fungicides that do not damage the characteristics of hot springs; Because Japan's consumption habit of hot springs still maintains the traditional culture of soaking in water, it has great fear and rejection of oxidizing disinfectants such as chlorine preparations, and indirectly promotes Japan's research on non-oxidizing disinfectants-cationic fungicides. After 26 months' on-the-spot verification in Taiwan Province Province, the new cationic bactericide SPAdo has solved the problems of coliform bacteria, Legionella, Pseudomonas aeruginosa, biofilm, foam and algae, and has no trouble in coloring the rich minerals in hot springs. SPAdo, a new cationic bactericide, is directly put into hot springs, which is the most popular bactericide for hot spring water quality in Japan at present.