The characteristics of ammonia nitrogen adsorption on the clinoptilolite was studied by static shaking table experiment,and the effect of clinoptilolite dosage and metal cations on quick adsorption of ammonium on the clinoptilolite investigated. The results indicated that the adsorption of ammonia nitrogen on clinoptilolite was fitted well with the Langmuir isotherm,and the maximum adsorption capacity was 12. 903 mg/g. The removal rate increased with the decrease of the clinoptilolite size,and the adsorptio...