With the official implementation of the new national standard "Drinking Water Sanitation Standards" (GB5749-2022) on April 1, 2023, water quality supervision will be more scientific and efficient, and the requirements for drinking water safety will be more stringent. Compared with the original national standard, the new national standard has added 4 new detection indicators, adjusted the limits of 8 indicators, and paid more attention to the sensory characteristics of drinking water, disinfection by-products, and risk changes.

The new national standard guarantees the safety of drinking water from the "source" to the "faucet". In order to provide the general public with high-quality tap water that meets the requirements of the new national standard, Qingdao Hailunfeng Water Supply Co., Ltd. water plant has started a production process upgrade and transformation project. The project mainly includes the construction of a new pre-ozone catalytic process, a biological fluidized bed process, the expansion of a conventional coagulation sedimentation tank, and the addition of sludge treatment. The project adopts Guolin Technology's 2 sets of oxygen source 10kg/h ozone systems.

Qingdao Hairunfeng Water Supply Co., Ltd. is located in Nanquan Community, Lancun Town, Jimo District, with a daily water supply capacity of 60,000 m ³. It is responsible for providing water supply to Jimo City, Lancun Town residents, enterprises, garrisons, western Chengyang District, High-tech Zone Industrial Park, Qingdao West Railway Station, Ligezhuang Town and other regions, serving about 130,000 people.

Since the pre-ozone catalytic oxidation process was put into operation, the water plant has achieved remarkable results in removing odor substances, algae, algal toxins, new pollutants and endocrine disruptors in water, which has greatly improved the efficiency of water treatment and water quality.

The commissioning of the ozone catalytic oxidation process in Qingdao Hailunfeng Water Supply Co., Ltd. marks a new height in water treatment technology in the region. Through the introduction and application of advanced technologies, the water plant has continuously improved the level of water treatment, effectively coping with the increasingly complex water quality problems. At the same time, it has also improved the stability and safety of water supply, providing citizens with high-quality and safe drinking water.

The new process adopts the ozone generation system with high degree of automation of Guolin Technology, which can fully cope with the abnormal fluctuation of raw water quality and ensure that the quality of the factory water fully meets the requirements of the new national standard.