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Method for preparing polyaluminum chloride composite material from polyaluminum chloride water treatment agent waste residues
The invention relates to the technical field of preparation of water purification materials, in particular to a method for preparing a polyaluminum chloride composite material from polyaluminum chloride water treatment agent waste residues. A method for preparing a polyaluminum chloride composite material by using polyaluminum chloride water treatment agent waste residues comprises the following steps: carrying out solid-liquid separation, drying, grinding, calcining, grinding and screening on a solid-liquid mixture containing the polyaluminum chloride water treatment agent waste residues to obtain pretreated slag powder, carrying out acid treatment to concentrate aluminum-rich filtrate, carrying out alkali treatment to obtain filtrate rich in aluminate radicals, and carrying out solid-liquid separation on the filtrate rich in aluminate radicals to obtain the polyaluminum chloride composite material. The filtrate rich in aluminate radicals is at least mixed with an aluminum source and then subjected to a hydrochloric acid aqueous solution polymerization reaction to obtain an aqueous solution containing polyaluminum chloride, and the aqueous solution containing polyaluminum chloride is mixed with cationic polyacrylamide and then subjected to reduced-pressure filtration, vacuum drying, grinding and screening to obtain a finished product. The aluminum-containing waste residues generated in the sewage treatment process are subjected to secondary development and utilization, aluminum resources in the aluminum-containing waste residues are extracted for production of the polyaluminum chloride composite material, the resource utilization rate is increased, and the method conforms to the sustainable green development trend.
本申请涉及净水材料制备技术领域，尤其是一种采用聚氯化铝水处理剂废渣制备聚合氯化铝复合材料的方法。一种采用聚氯化铝水处理剂废渣制备聚合氯化铝复合材料的方法，包括以下步骤：含有聚氯化铝水处理剂废渣的固液混合物固液分离、烘干、研磨、煅烧、研磨筛分得预处理渣粉，经过酸处理浓缩富铝滤液，再经碱处理获得富含铝酸根滤液，富含铝酸根滤液至少与铝源混合后经过盐酸水溶液聚合反应得含有聚合氯化铝的水溶液，其与阳离子聚丙烯酰胺混合后减压过滤、真空干燥、研磨筛分得成品。本申请对污水处理过程中产生的含铝废渣进行二次开发利用，提取含铝废渣中铝资源进行聚合氯化铝复合材料的生产，提升资源利用率，符合可持续绿色发设大趋势。
Method for preparing polyaluminum chloride composite material from polyaluminum chloride water treatment agent waste residues
The invention relates to the technical field of preparation of water purification materials, in particular to a method for preparing a polyaluminum chloride composite material from polyaluminum chloride water treatment agent waste residues. A method for preparing a polyaluminum chloride composite material by using polyaluminum chloride water treatment agent waste residues comprises the following steps: carrying out solid-liquid separation, drying, grinding, calcining, grinding and screening on a solid-liquid mixture containing the polyaluminum chloride water treatment agent waste residues to obtain pretreated slag powder, carrying out acid treatment to concentrate aluminum-rich filtrate, carrying out alkali treatment to obtain filtrate rich in aluminate radicals, and carrying out solid-liquid separation on the filtrate rich in aluminate radicals to obtain the polyaluminum chloride composite material. The filtrate rich in aluminate radicals is at least mixed with an aluminum source and then subjected to a hydrochloric acid aqueous solution polymerization reaction to obtain an aqueous solution containing polyaluminum chloride, and the aqueous solution containing polyaluminum chloride is mixed with cationic polyacrylamide and then subjected to reduced-pressure filtration, vacuum drying, grinding and screening to obtain a finished product. The aluminum-containing waste residues generated in the sewage treatment process are subjected to secondary development and utilization, aluminum resources in the aluminum-containing waste residues are extracted for production of the polyaluminum chloride composite material, the resource utilization rate is increased, and the method conforms to the sustainable green development trend.
本申请涉及净水材料制备技术领域，尤其是一种采用聚氯化铝水处理剂废渣制备聚合氯化铝复合材料的方法。一种采用聚氯化铝水处理剂废渣制备聚合氯化铝复合材料的方法，包括以下步骤：含有聚氯化铝水处理剂废渣的固液混合物固液分离、烘干、研磨、煅烧、研磨筛分得预处理渣粉，经过酸处理浓缩富铝滤液，再经碱处理获得富含铝酸根滤液，富含铝酸根滤液至少与铝源混合后经过盐酸水溶液聚合反应得含有聚合氯化铝的水溶液，其与阳离子聚丙烯酰胺混合后减压过滤、真空干燥、研磨筛分得成品。本申请对污水处理过程中产生的含铝废渣进行二次开发利用，提取含铝废渣中铝资源进行聚合氯化铝复合材料的生产，提升资源利用率，符合可持续绿色发设大趋势。
Method for preparing polyaluminum chloride composite material from polyaluminum chloride water treatment agent waste residues
一种采用聚氯化铝水处理剂废渣制备聚合氯化铝复合材料的方法
YUAN YANGXIN (author) / YUAN BINGXIN (author) / CAI ZHAOMIN (author) / WANG QUAN (author)
2024-07-12
Patent
Electronic Resource
Chinese
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