Foreword:

In recent years, the state has been advocating pollution-free food, and has strict regulations on the drinking water quality of livestock and poultry. High-quality water is the guarantee for the development of animal husbandry economy. According to incomplete statistics, most farms use natural well water, and about 11% of the well water is hard water. Immunization failures often occur in poultry raising, cows produce less milk, and pigs grow slowly. Industrial wastewater from aquaculture not only contains a large amount of suspended solids, but also contains various harmful substances and pathogenic bacteria. For aquaculture, it generally contains active agent ingredients that have inhibitory effects on biological bacteria and are difficult to degrade. Generally, it is difficult to degrade and remove organic pollutants in sewage after simple treatment. The effluent after the main treatment unit is also difficult to meet the effluent standard, and is directly discharged into the ground, which makes the surface water body overload and nutrient, thereby destroying the ecological balance and affecting people's health.