[1]潘浩奇,张亚倩,龙跃升,等.碳酸钙/高岭石复合材料对底泥释磷与组分的影响[J].中国给水排水,2022,38(9):100-105.
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碳酸钙/高岭石复合材料对底泥释磷与组分的影响

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第38卷 期数: 2022年第9期 页码: 100-105 栏目: 出版日期: 2022-05-01
Title:
Effect of Calcium Carbonate/Kaolinite Composite on Phosphorus Composition Released from Sediment
作者:
潘浩奇1， 张亚倩1， 龙跃升2， 张凤娥1
（1.常州大学 环境与安全工程学院，江苏 常州 213000；2.江苏筑森建筑设计有限公司，江苏 常州 213000）
Author(s):
PAN　Hao-qi1， ZHANG　Ya-qian1， LONG Yue-sheng2， ZHANG　Feng-e1
（1. School of Environmental and Safety Engineering， Changzhou University， Changzhou 213000，China； 2. Jiangsu Zhusen Architectural Design Co. Ltd.， Changzhou 213000， China）
关键词:
碳酸钙/高岭石复合材料;  底泥;  磷释放;  磷组分
Keywords:
calcium carbonate/kaolinite composite;  sediment;  phosphorus release;  phosphorus composition
摘要:
为了解决富营养化河道中内源磷释放的问题，合成了一种新型磷负荷控制材料，即负载有碳酸钙微粒的高岭石复合材料（CLK），研究了其对底泥磷释放和磷组分的影响。结果发现，CLK能有效抑制底泥释磷，最佳投加量为100 mg/g，2 h内即将水中溶解态磷（SRP）浓度控制在0.021 mg/L。CLK的添加促使底泥中的可交换态磷（Ex-P）、铝结合态磷（Al-P）和铁结合态磷（Fe-P）向钙结合态磷（Ca-P）转变，其中Fe-P含量减少了17.31%，Ca-P含量增加了27.91%，有效降低了底泥磷释放的风险。
Abstract:
To solve the problem of endogenous phosphorus release in eutrophic rivers, a novel phosphorus load control material,namely kaolinite composite loaded with calcium carbonate (CLK)particles, was synthesized and its effect on phosphorus composition released from the sediment was investigated. CLK effectively inhibited phosphorus release from the sediment. The optimal dosage of CLK was 100 mg/g, and the concentration of soluble phosphorus in water was controlled at 0.021 mg/L within 2 h. The addition of CLK promoted the conversion of interchangeable phosphorus (Ex-P), aluminum-bound phosphorus (Al-P) and iron-bound phosphorus (Fe-P) to calcium-bound phosphorus (Ca-P) in the sediment. Among them, the content of Fe-P decreased by 17.31%, and the content of Ca-P increased by 27.91%, which effectively reduced the risk of phosphorus release from the sediment.

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更新日期/Last Update: 2022-05-01