Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Renewable phosphorus-absorbing ceramsite as well as preparation method and application thereof
The invention particularly relates to renewable phosphorus-absorbing ceramsite as well as a preparation method and application thereof. The renewable phosphorus-absorbing ceramsite is prepared by mixing, granulating and sintering the following raw materials: weathered layer granite waste, weathered layer granite sand washing sludge and phosphate tailings, the mixing ratio is based on the principle that the ratio of the sum of the contents of the alkali metal and the alkaline earth metal oxide to the sum of the contents of the silicon dioxide, the aluminum oxide and the ferric oxide is 0.60-0.75. The ceramsite can be prepared from only three kinds of industrial waste, the saturation adsorption capacity of the ceramsite can reach 20.4 mg/g, the phosphorus removal rate can reach 85% or above, the ceramsite has good adaptability in the phosphorus concentration range with the phosphorus content being 5-300 mg/L, the leaching concentration of heavy metal (Ba, Cr, Cu, Ni, Pb and Zn) is lower than the hazardous waste leaching toxicity identification concentration (GB5085.3-2007), and the ceramsite has the advantages of being low in cost and high in cost performance and has good application prospects. The method is suitable for removing phosphorus in various wastewater and surface water.
本发明具体涉及一种可再生吸磷陶粒及其制备方法和应用。该可再生吸磷陶粒由各原料混合制粒并烧结而成，所述原料为：风化层花岗岩废料、风化层花岗岩洗沙污泥和磷尾矿，混合的比例为：以其中碱金属及碱土金属氧化物的含量之和与二氧化硅、三氧化二铝及三氧化铁三者含量之和的比例在0.60～0.75之间为原则混合。该陶粒仅仅由三种工业废弃物即可制备得到，其饱和吸附量可达20.4mg/g，磷的去除率可达85％以上，在磷含量为5～300mg/L的磷浓度范围内有良好的适应性，重金属(Ba、Cr、Cu、Ni、Pb、Zn)的浸出浓度均低于危险废物浸出毒性鉴定浓度(GB5085.3‑2007)，具有成本低，性价比高的特点，适用于各类废水和地表水磷的去除。
Renewable phosphorus-absorbing ceramsite as well as preparation method and application thereof
The invention particularly relates to renewable phosphorus-absorbing ceramsite as well as a preparation method and application thereof. The renewable phosphorus-absorbing ceramsite is prepared by mixing, granulating and sintering the following raw materials: weathered layer granite waste, weathered layer granite sand washing sludge and phosphate tailings, the mixing ratio is based on the principle that the ratio of the sum of the contents of the alkali metal and the alkaline earth metal oxide to the sum of the contents of the silicon dioxide, the aluminum oxide and the ferric oxide is 0.60-0.75. The ceramsite can be prepared from only three kinds of industrial waste, the saturation adsorption capacity of the ceramsite can reach 20.4 mg/g, the phosphorus removal rate can reach 85% or above, the ceramsite has good adaptability in the phosphorus concentration range with the phosphorus content being 5-300 mg/L, the leaching concentration of heavy metal (Ba, Cr, Cu, Ni, Pb and Zn) is lower than the hazardous waste leaching toxicity identification concentration (GB5085.3-2007), and the ceramsite has the advantages of being low in cost and high in cost performance and has good application prospects. The method is suitable for removing phosphorus in various wastewater and surface water.
本发明具体涉及一种可再生吸磷陶粒及其制备方法和应用。该可再生吸磷陶粒由各原料混合制粒并烧结而成，所述原料为：风化层花岗岩废料、风化层花岗岩洗沙污泥和磷尾矿，混合的比例为：以其中碱金属及碱土金属氧化物的含量之和与二氧化硅、三氧化二铝及三氧化铁三者含量之和的比例在0.60～0.75之间为原则混合。该陶粒仅仅由三种工业废弃物即可制备得到，其饱和吸附量可达20.4mg/g，磷的去除率可达85％以上，在磷含量为5～300mg/L的磷浓度范围内有良好的适应性，重金属(Ba、Cr、Cu、Ni、Pb、Zn)的浸出浓度均低于危险废物浸出毒性鉴定浓度(GB5085.3‑2007)，具有成本低，性价比高的特点，适用于各类废水和地表水磷的去除。
Renewable phosphorus-absorbing ceramsite as well as preparation method and application thereof
一种可再生吸磷陶粒及其制备方法和应用
ZHOU HONG (Autor:in) / XIAO TINGTING (Autor:in) / PAN ZHIQUAN (Autor:in) / FAN XUYANG (Autor:in) / RONG XICAI (Autor:in) / WANG HAORAN (Autor:in)
11.06.2024
Patent
Elektronische Ressource
Chinesisch
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