[1]商亚博,张志鹏,殷伟民,等.核晶造粒技术同步去除疏干水中硬度与悬浮物[J].中国给水排水,2025,41(11):56-64.
　SHANGYa-bo,ZHANGZhi-peng,YINWei-min,et al.Nucleation Crystallization Pelleting (NCP) Process for Simultaneous Removal of Hardness and Suspended Solids in Mine Drainage Water[J].China Water & Wastewater,2025,41(11):56-64.
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核晶造粒技术同步去除疏干水中硬度与悬浮物

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第41卷 期数: 2025年第11期 页码: 56-64 栏目: 出版日期: 2025-06-01
Title:
Nucleation Crystallization Pelleting (NCP) Process for Simultaneous Removal of Hardness and Suspended Solids in Mine Drainage Water
作者:
商亚博1， 张志鹏2， 殷伟民3， 赵杨3， 张亚强2， 张宇恒4， 金鑫1， 金鹏康1
（1.西安交通大学 人居环境与建筑工程学院，陕西 西安 710049；2.中科核润<陕西>生态环境有限公司，陕西 西安 710000；3.陕西水务发展集团有限公司，陕西 西安 710018；4.江苏新宇天成环保有限公司，江苏 无锡 214214）
Author(s):
SHANG　Ya-bo1， ZHANG　Zhi-peng2， YIN　Wei-min3， ZHAO　Yang3， ZHANG　Ya-qiang2， ZHANG　Yu-heng4， JIN　Xin1， JIN　Peng-kang1
（1. School of Human Settlements and Civil Engineering， Xi’an Jiaotong University， Xi’an 710049， China； 2. Zhongke Herun Ecological Environment Protection Co. Ltd.， Xi’an 710000， China； 3. Shaanxi Water Development Group Co. Ltd.， Xi’an 710018， China； 4. Jiangsu Xinyu Tiancheng Environmental Protection Co. Ltd.， Wuxi 214214， China）
关键词:
疏干水;  核晶造粒技术;  硬度;  悬浮物;  同步去除
Keywords:
drainage water;  nucleation crystallization pelleting process;  hardness;  suspended solids;  simultaneous removal
摘要:
针对采煤疏干水深度处理过程中硬度与悬浮物浓度较高、影响回用的问题，研发了核晶造粒硬度与悬浮物同步去除技术，并成功合成了钙、镁专用晶种。采用一体化反应器开展中试，考察了其去除效果，并对关键参数进行了优化。采用两级核晶造粒串联，当一级和二级的NaOH投加量分别为250、500 mg/L时，总硬度和浊度去除率分别超过90.7%和75%，实现了对硬度与悬浮物的同步去除。X射线衍射、X射线光电子能谱分析显示，第一、二级分别形成了CaCO3和Mg（OH）2密实造粒体，结合扫描电镜和傅里叶红外光谱分析，证明了悬浮物被共聚于造粒体表面而同步去除，最终降低了出水浊度。对晶种表面Zeta电位的测定显示，Ca2+/Mg2+主要是通过静电力作用富集在专用晶种表面，同时在药剂的驱动下，在晶种表面成核并生长成致密的造粒体，进而从水中分离。该技术不仅可以克服传统双碱法药剂使用量大、运行成本高的不足，还可以减少污泥产量。
Abstract:
Aiming at the problem of high content of hardness and suspended solids in the advanced treatment of coal mining drainage water, which affects the water recycling, the nucleation crystallization pelleting (NCP) process with the ability of simultaneous hardness and suspended solids removal was developed. In addition, calcium and magnesium crystal seeds were synthesized and modified. An integrated pilot-scale reactor was designed to carry out application research. Key parameters were optimized and the removal efficiency was evaluated. The results of the pilot-scale reactor for two-stage NCP process showed that when NaOH dosage was 250 mg/L in the first stage and 500 mg/L in the second stage, the removal efficiency of total hardness and turbidity could reach more than 90.7% and 75% respectively, which achieved the simultaneous removal of hardness and suspended solids. The results of X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) showed that the NCP in the first and second stage formed dense CaCO3 and Mg(OH)2 pellets, respectively. The results of scanning electron microscopy (SEM) and Fourier-transform infrared spectroscopy (FT-IR) proved that the suspended solids were co-precipitated on the surface of pellets and removed simultaneously, which finally reduced the effluent turbidity. As determined by the Zeta potential on the surface of the crystal seeds, it was found that Ca2+/Mg2+ was mainly accumulated on the surface of the customized crystal seed by electrostatic force, and grown into dense pellet on the surface of the crystal seed driven by the reagents, which finally was separated from water. The NCP process can not only overcome the shortcomings of the traditional bi-alkaline method (high dosages of chemicals and operational costs), but also reduce sludge production.
更新日期/Last Update: 2025-06-01