Abstract: Modified zeolite with better nitrogen removal effect was used to prepare antibacterial adsorption materials for treating the secondary effluent of high-concentration coliform and ammonia nitrogen. Among Ag⁺, Zn²⁺ and Cu²⁺ ions, silver-supported antibacterial adsorption materials have the best antibacterial properties and are beneficial to nitrogen removal. The optimal preparation conditions are the following:AgNO₃ concentration of 85mg·g^-1, pH 6-7, preparation time of 120min, reaction temperature of 40℃, and reaction speed of 150r·min^-1. After the optimization, the silver content in the prepared materials is 49.79mg·g^-1. 0.5g·L^-1 of silver-supported antibacterial adsorption materials and 2g·L^-1 of zeolite were applied to treat renewable water under the optimal conditions. The results show that the reaction time is 120min, the sterilizing rate is 98.87%, the removal rate of ammonia nitrogen is 66.54%, the mass concentration of residual nitrogen is 8.36mg·L^-1, which achieve the water-quality indexes of the urban miscellaneous water.