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Process for dewatering dredging sludge and preparing ceramsite by using amphoteric carboxymethyl starch conditioner
The invention discloses a process for dewatering dredging sludge and preparing ceramsite by using an amphoteric carboxymethyl starch conditioner. The process comprises the following steps: preparing the amphoteric carboxymethyl starch conditioner into a solution, mixing and stirring the amphoteric carboxymethyl starch conditioner with fresh sludge which is not dehydrated, filtering out a supernatant to obtain dehydrated dry-basis sludge, and then mixing the dehydrated dry-basis sludge with a ceramic making auxiliary material, and granulating and sintering to obtain the product. The amphotericcarboxymethyl starch conditioner is utilized to dehydrate the dredging sludge, has high heavy metal component fixing capacity, can greatly reduce the escape of heavy metals, and can solve the problemof heavy metal pollution of the dredging sludge. The content of organic matter components is increased, ceramsite expansion is promoted, the expansion coefficient of the light aggregate reaches 3.0 orabove, and the expansion performance of the light aggregate can be improved. The amphoteric carboxymethyl starch conditioner pre-dehydration process is combined with the sintered ceramsite manufacturing process, so that a large amount of desilting sludge can be consumed, the mineral resource consumption is reduced, and new economic benefits can be generated.
本发明公开了一种利用两性羧甲基淀粉调理剂对清淤淤泥脱水并造陶粒的工艺，包括将两性羧甲基淀粉调理剂制成溶液，与未脱水的新鲜淤泥混合搅拌，滤去上清液，得到脱水后的干基淤泥，然后与制陶辅料混合，造粒，烧胀，即得。本发明利用两性羧甲基淀粉调理剂对清淤淤泥进行脱水，并且对重金属组分固定能力强，可以极大减少重金属的逸出，能解决清淤淤泥的重金属污染问题；同时还提高了有机物组分含量，促进陶粒膨胀，轻集料膨胀系数达到3.0以上，有利于提升轻集料的膨胀性能；此外，两性羧甲基淀粉调理剂预脱水工艺与制造烧胀陶粒工艺相结合，既可以消耗大量的清淤淤泥，减少矿产资源消耗，又能产生新的经济效益。
Process for dewatering dredging sludge and preparing ceramsite by using amphoteric carboxymethyl starch conditioner
The invention discloses a process for dewatering dredging sludge and preparing ceramsite by using an amphoteric carboxymethyl starch conditioner. The process comprises the following steps: preparing the amphoteric carboxymethyl starch conditioner into a solution, mixing and stirring the amphoteric carboxymethyl starch conditioner with fresh sludge which is not dehydrated, filtering out a supernatant to obtain dehydrated dry-basis sludge, and then mixing the dehydrated dry-basis sludge with a ceramic making auxiliary material, and granulating and sintering to obtain the product. The amphotericcarboxymethyl starch conditioner is utilized to dehydrate the dredging sludge, has high heavy metal component fixing capacity, can greatly reduce the escape of heavy metals, and can solve the problemof heavy metal pollution of the dredging sludge. The content of organic matter components is increased, ceramsite expansion is promoted, the expansion coefficient of the light aggregate reaches 3.0 orabove, and the expansion performance of the light aggregate can be improved. The amphoteric carboxymethyl starch conditioner pre-dehydration process is combined with the sintered ceramsite manufacturing process, so that a large amount of desilting sludge can be consumed, the mineral resource consumption is reduced, and new economic benefits can be generated.
本发明公开了一种利用两性羧甲基淀粉调理剂对清淤淤泥脱水并造陶粒的工艺，包括将两性羧甲基淀粉调理剂制成溶液，与未脱水的新鲜淤泥混合搅拌，滤去上清液，得到脱水后的干基淤泥，然后与制陶辅料混合，造粒，烧胀，即得。本发明利用两性羧甲基淀粉调理剂对清淤淤泥进行脱水，并且对重金属组分固定能力强，可以极大减少重金属的逸出，能解决清淤淤泥的重金属污染问题；同时还提高了有机物组分含量，促进陶粒膨胀，轻集料膨胀系数达到3.0以上，有利于提升轻集料的膨胀性能；此外，两性羧甲基淀粉调理剂预脱水工艺与制造烧胀陶粒工艺相结合，既可以消耗大量的清淤淤泥，减少矿产资源消耗，又能产生新的经济效益。
Process for dewatering dredging sludge and preparing ceramsite by using amphoteric carboxymethyl starch conditioner
一种利用两性羧甲基淀粉调理剂对清淤淤泥脱水并造陶粒的工艺
YANG ZHEN (author) / YANG WEIBEN (author) / HU MIN (author) / HOU TIANYANG (author) / LIU YUE (author) / LI YIMENG (author) / BIAN BO (author)
2020-06-19
Patent
Electronic Resource
Chinese
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