根据”Standard for Hygienic Safety Eva

According to "Standard for Hygienic Safety Evaluation of Chemicals Used In Drinking Water Treatment", drinking water chemical treatment agent when the dosage using a predetermined post-treatment sensory index of water generally should meet the "drinking water quality standard" (2001 ) requirements. Wherein, when the chemical treatment agent into the drinking water in the drinking water is harmful substances "drinking water quality standard" predetermined material (2001), the allowable limit of the material was 10% corresponding to a predetermined limit. Comprises a metal arsenic, cadmium, chromium, lead, silver, selenium, and mercury (Hg limit of 0.0002mg / L) depends on the product both inorganic and organic materials, formulation and manufacturing process. For radioactive material, mineral-based products should determine total radioactivity α and β total radioactivity used directly. However, when the chemical treatment agent into the drinking water in the drinking water of harmful substances in the "drinking water quality standard" (2001) are not specified, it may be determined with reference to domestic and international standards, which is the permissible limit for the allowable concentration 10%.

According to "Standard for Hygienic Safety Of Chemicals Use In DrinkIng Water Treatment", the general sensory indicators of treated water should comply with the "Health Code for Drinking Water Quality hygiene" (2001) when used in specified amounts of chemical treatment. Among them, when the chemical treatment agent for drinking water into drinking water harmful substances are the "living drinking water quality hygiene norms" (2001) specified in the substance, the permissible limit of the substance is 10% of the corresponding prescribed limit. Inorganics and organics, including metal arsenic, cadmium, chromium, lead, silver, selenium and mercury (mercury limit of 0.0002mg/L), depend on the raw material, formulation and production process of the product. For radioactive materials, products made directly of minerals should be measured for total alpha radioactivity and total beta radioactivity. However, when the harmful substances brought into drinking water by the chemical treatment agent for drinking water are not stipulated in the Code of Health of Drinking Water Quality (2001), the permissible limit may be determined by reference to relevant standards at home and abroad, and the permissible limit shall be 10% of the permissible concentration.

根据“饮用水用化学品卫生安全评价标准”“治疗”。《水利》2001年版10%，、0.0002mg/L水利部《水利水电》2001年版<br>