What kind of cold water filtration method does the hotel use?

Water tank filtration.

Generally, hotels store water in rooftop water tanks, and then install a water purification device at the water outlet of the water tank.

Domestic water purification technology product; this product is designed to further deeply filter and disinfect tap water for direct drinking. Since tap water falls under domestic water standards, water purification based on this standard should not have high technical content. However, the requirements for manufacturing materials and professionalism are very strict. When tap water is physically heated to 90-99 degrees, it can be completely disinfected and reduce hardness and other excessive substances. Sewage purification technology products; purify different levels of sewage to certain water quality standards according to needs. This is a very high-end technical field. Due to the different pollution sources and contaminants of sewage, the purification technology for it is not simple. But no matter what purification technology, there must be water quality standards and data standards for various indicators.