基于净水污泥与沸石制备的复合材料同步吸附去除沉积物所释放氮磷的研究

徐金兰; 何晨; 白文广; 荣悦彤; 刘璐; 许开慧; 李峰森; 刘宏伟

doi:10.13205/j.hjgc.202507004

基于净水污泥与沸石制备的复合材料同步吸附去除沉积物所释放氮磷的研究

doi: 10.13205/j.hjgc.202507004

徐金兰^1,2, ,,
何晨^1,2,
白文广^1,2,
荣悦彤^1,2,
刘璐^1,2,
许开慧^1,2,
李峰森^1,2,
刘宏伟^1,2,3

1. 西安建筑科技大学环境与市政工程学院, 西安 710055;
2. 陕西省环境工程重点实验室, 西安 710055;
3. 中圣环境科技发展有限公司, 西安 710076

基金项目:

陕西省秦创原“科学家+工程师”（2024QCY-KXJ-045）

详细信息

作者简介:
徐金兰（1973—），女，教授，主要研究方向为水处理理论与技术。xujinlan@xauat.edu.cn

通讯作者:
徐金兰（1973—），女，教授，主要研究方向为水处理理论与技术。xujinlan@xauat.edu.cn

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- 文章访问数: 16
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出版历程
- 收稿日期: 2024-10-19
- 录用日期: 2024-12-05
- 修回日期: 2024-11-20
- 网络出版日期: 2025-09-11

Simultaneous inhibition of nitrogen and phosphorus released from sediments using composite materials prepared from water purfication sludge and zeolite

XU Jinlan^{1,2
, ,},
HE Chen^1,2,
BAI Wenguang^1,2,
RONG Yuetong^1,2,
LIU Lu^1,2,
XU Kaihui^1,2,
LI Fengsen^1,2,
LIU Hongwei^1,2,3

1. College of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China;
2. Key Laboratory of Environmental Engineering, Shaanxi Province, Xi'an 710055, China;
3. Zhongsheng Environmental Technology Development Co., Xi'an 710076, China

摘要

摘要: 针对沉积物向上覆水释放营养盐和有机物导致水体发生富营养化的问题，拟采用原位覆盖技术对沉积物释放污染物进行去除实验。利用响应曲面法优化沸石的改性方法，并通过单因素实验探究净水厂污泥的最佳煅烧时间和温度。煅烧净水污泥和复合改性沸石，利用鸡蛋壳制备CaO₂，并用水泥作为黏合剂将其混合制备了覆合覆盖材料CCM（composite cover material），以实现长效释氧并同步强效去除氮磷。研究发现：CCM疏松多孔，并且存在丰富的含氧官能团增强吸附能力与吸附容量，其中存在的Ca²⁺、Al³⁺、Na⁺可促进NH₄⁺交换与磷酸盐的固定化。CCM的存在还可以诱导微生物生长，强化硝化反应，去除水体中TOC。经过3轮覆盖实验后，总氮、氨氮、总磷、正磷酸盐、TOC的去除率仍能达到81.75%、79.55%、86.64%、85.82%、29.16%。CCM作为一种环境友好型材料，使用寿命长，可在同步去除氮磷及有机物的同时诱导生态系统原生微生物生长，高效恢复水体活力。
- 废物利用 /
- 氮磷去除 /
- 响应曲面 /
- 生物诱导
Abstract: In response to nutrient and organic matter release from sediments into overlying water， which leads to eutrophication， an in-situ capping technology was proposed to mitigate pollution released from sediments in an experiment. The response surface method was used to optimize the modification method of zeolite， and a one-way experiment was conducted to determine the optimal calcination time and temperature for water purification plant sludge. The composite cover material（CCM） was prepared by calcining water purification sludge and composite-modified zeolite， preparing CaO₂ from eggshell， and mixing them with cement as a binder for long-lasting oxygen release and simultaneous efficient removal of nitrogen and phosphorus. It was found that the CCM was loose and porous， with abundant oxygen-containing functional groups that enhanced its adsorption capability and capacity. The presence of Ca²⁺， Al³⁺， and Na⁺ promoted the ion exchange with NH₄⁺ and the immobilization of phosphate. Additionally， the CCM could induce microbial growth， strengthen the nitrification reaction， and remove the TOC from the water body. After three rounds of capping experiments， total nitrogen， ammonia， total phosphorus， orthophosphate， and TOC were simultaneously and efficiently removed， achieving a removal rate of 81.75%， 79.55%， 86.64%， 85.82%， and 29.16%， respectively. CCM， as an environmentally friendly material with a long service life， promotes the growth of ecosystem-originating microorganisms while enabling the synchronous removal of nitrogen， phosphorus， and organic matter， thus efficiently restoring the ecological vitality of the water.
- waste utilization /
- nitrogen and phosphorus removal /
- response surface /
- biological induction

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