方解石去除废水中高浓度磷酸盐机理与影响因素

王里奥; 钟山; 刘元元; 董婧蒙

doi:10.11835/j.issn.1674-4764.2009.04.021

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方解石去除废水中高浓度磷酸盐机理与影响因素

更新时间：2023-11-28

- 方解石去除废水中高浓度磷酸盐机理与影响因素
- Mechanism and Influencing Factors of Concentrated Phosphate Removal by Calcite
- 土木与环境工程学报（中英文） 2009年31卷第4期页码：107-111
- 作者机构：
  
  1. 三峡库区生态环境教育部重点实验室,重庆,400044
  2. 重庆大学资源及环境科学学院,重庆,400044
  3. 重庆大学三峡库区生态环境教育部重点实验室,重庆,400044
- 作者简介：
- 基金信息：
  
  国家自然科学基金项目（50808184）;重庆大学科技创新基金项目（200811A1A0050294）
- DOI：10.11835/j.issn.1674-4764.2009.04.021
  中图分类号：
- 纸质出版：2009
- 稿件说明：
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王里奥, 钟山, 刘元元, 等. 方解石去除废水中高浓度磷酸盐机理与影响因素[J]. 土木与环境工程学报（中英文）, 2009,31(4):107-111.

WANG Liao, ZHONG Shan, LIU Yuanyuan, et al. Mechanism and Influencing Factors of Concentrated Phosphate Removal by Calcite[J]. Journal of Civil and Environmental Engineering, 2009, 31(4): 107-111.
王里奥, 钟山, 刘元元, 等. 方解石去除废水中高浓度磷酸盐机理与影响因素[J]. 土木与环境工程学报（中英文）, 2009,31(4):107-111. DOI： 10.11835/j.issn.1674-4764.2009.04.021.

WANG Liao, ZHONG Shan, LIU Yuanyuan, et al. Mechanism and Influencing Factors of Concentrated Phosphate Removal by Calcite[J]. Journal of Civil and Environmental Engineering, 2009, 31(4): 107-111. DOI： 10.11835/j.issn.1674-4764.2009.04.021.

摘要

采用X射线衍射分析(XRD)，透射电镜观测(TEM)，红外光谱分析(FTIR)，比表面积(BET)与孔径测试(BJH)分析结合理论计算探讨方解石除磷机理；通过实验考察主要影响因素，并对除磷机理加以验证。结果表明：反应时间、反应温度、pH值、投加量对除磷效率影响显著。BET，BJH与TEM测试表明方解石在整个除磷过程中未出现多孔性结构，比表面积均小于16.0 m2/g，孔容低于0.085 cm3/g，其吸附能力很弱，吸附作用不是除磷的主要机制；XRD与FTIR测试结果显示生成CaHPO4·2H2

Abstract

The phosphate removal mechanisms of Calcite were investigated with the tests of Xray diffraction (XRD) analysis

transmission electron microscope (TEM) measurement

fourier transform infrared spectroscopy (FTIR) analysis

specific surface area by BrunauerEmmettTeller(BET) method and pole size distribution by BarrettJoynerHalenda(BJH) method. The main influencing factors on phosphate removal were investigated and the removal mechanism was approved. It was shown that phosphate removal efficiency was significantly influenced by reaction time

temperature

pH value and dosage of calcite. And with BET

BJH and TEM tests

no porous materials

less than 16.0 m2/g for the specific surface area and below 0.085 cm3/g for total pore volume

were found during the reaction process so as to prove that absorption was not the main way of phosphate removal. And based on XRD and FTIR tests

it was found that chemical precipitation was the main way of phosphate removal which contained two steps: the formation of CaHPO4·2H2O(DCPD) and its transformation to ACP

and the controlling step was DCPD’s transformation to ACP.

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