Improved biological control by using chlorine-stabilizer mixture

The invention relates to improved biological control by using a chlorine-stabilizer mixture. The invention discloses a composition and a using method thereof. The composition is prepared from a halogen source, urea, an additional halogen stabilizer without containing the urea, and optionally, alkali with the concentration sufficient to provide a pH value larger than 10 to the composition; and optionally, the composition does not contain a stabilized bromine compound. In addition, the invention discloses a method for lowering the bioactivity in a process flow. Through an optimized mixing ratioof halogen to the stabilizer and an optimized mixing ratio of ammonium salt to sulfamic acid or sulfamate, the synergic effect occurs, so that the efficacy of the composition as a biocide is added, and the harmful effect on other chemicals (such as paper pulp and a paper additive in a papermaking water stream) existing in a water stream is avoided. 本发明涉及通过使用氯-稳定剂混合物的改进的生物控制。本发明公开了种组合物和其使用方法，所述组合物包括：卤素源、尿素和不包括尿素的额外的卤素稳定剂、可