结果表明，有机改性的沸石对甲醛的吸附要比天然沸石和无机改性沸石对甲醛的吸附效果明显。
The results show that absorption level of formaldehyde by organic-modified zeolite is higher than that by natural zeolite and inorganic-modified zeolite.
将天然沸石进行处理制备出多孔质改性沸石颗粒。
A modified zeolite particle with pore structure was made from natural zeolite.
用扫描电镜、X射线衍射仪、红外光谱等检测手段对天然沸石和改性后的沸石进行结构表征，进一步分析了改性效果及原因。
The structures of natural zeolite and modified zeolite were observed by SEM, XRD and FT-IR. Based on these, the reason and effect of modification were further analyzed.
天然沸石及改性沸石对氨氮有很强的选择性吸附能力。
Natural and modified zeolite have strong selective adsorption ability to ammonia nitrogen in the wastewater.
天然沸石及改性沸石对氨氮有很强的选择性吸附能力。
Natural and modified zeolite have strong selective adsorption ability to ammonia nitrogen in the wastewater.
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