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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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This study was conducted to evaluate the feasibility of ammonia removal by zeolite adsorption in drinking water treatment. In generally, drinking water treatment process is conducted coagulation/flocculation, sedimentation, sand filtration and disinfection. We tested feasibility with two method, one is powdered zeolite dosing to coagulation tank and the other is to substitute granular zeolite for sand of sand filter. In powdered zeolite test, raw water is used tap water with putting of 2㎎/l of NH<sub>4</sub>^+-N. Filtration of granular zeolite was conducted with 80㎝ of effective column high and 120m/d of flow rate. At above 100㎎/l of zeolite dosage, ammonia concentration was decreased below 0.5㎎/l of NH<sub>4</sub>^+-N in powdered zeolite test. But, turbidity was increased to 30 NTU by powdered zeolite dosage. That turbidity was scarcely decreased in generally coagulant using condition in drinking water treatment. In granular zeolite in sand filter could be removal ammonia in winter. But we need regeneration at zeolite filtration for ammonia removal. So, it is to make clear that zeolite regeneration ability as compared KCl with NaCl. The result reveal that KCl was more excellent than NaCl. Optimum regeneration concentration of KCl was revealed 100mM. Regeneration efficient was not increased at pH range 10~12.5.
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UCI(KEPA) : I410-ECN-0102-2023-451-001812243