含盐量及pH变化对高盐废水除硬除硅效果影响研究

doi:10.11799/ce202412004

煤炭工程 ›› 2024, Vol. 56 ›› Issue (12): 19-25.doi: 10.11799/ce202412004

含盐量及pH变化对高盐废水除硬除硅效果影响研究

王小强，程海涛，陈哲，等

1. 中煤西安设计工程有限责任公司
2. 南京丹恒科技有限公司

收稿日期:2024-03-18 修回日期:2024-06-26 出版日期:2024-12-20 发布日期:2025-01-08
通讯作者: 陈哲 E-mail:978104262@qq.com

Based on the change of pH and salt content, the change rule of hard and silicon removal in high salt wastewater was studied.

Received:2024-03-18 Revised:2024-06-26 Online:2024-12-20 Published:2025-01-08

摘要/Abstract

摘要： 为去除高盐废水中的钙、镁离子及二氧化硅，降低对后续膜工艺和蒸发工艺的影响，研究了含盐量、反应pH、对高盐废水中钙、镁离子及二氧化硅的去除效果的影响，验证了除硬和除硅的路线。研究表明：在投加碳酸钠和氯化镁时，pH对除硬除硅反应影响明显，且在pH≥11时，可以同步将钙镁硅降至较低水平。另外，随着含盐量上升盐效应明显，钙镁硅离子的去除率逐渐降低，尤其对钙离子的去除影响最为明显，继续提升 pH也并不能大幅提升钙镁硅离子的去除率。

关键词: 含盐废水, 除硬, 除硅, pH值, 盐效应

Abstract: In order to remove calcium, magnesium ions and silicon dioxide in high-salt wastewater and reduce the impact on the subsequent membrane process and evaporation process, the effects of salt content, reaction pH, and removal of calcium, magnesium ions and silicon dioxide in high-salt wastewater were studied. The results show that when sodium carbonate and magnesium chloride are added, the pH has a significant effect on the reaction of removing hardness and silicon, and when the pH is greater than or equal to 11, the calcium, magnesium and silicon can be reduced to a lower level simultaneously. In addition, when sodium carbonate and magnesium chloride were added, the removal rate of calcium, magnesium and silicon ions gradually decreased with the increase of salt content. Even if the pH was increased, the removal rate of ions could not be greatly improved, especially the removal of calcium ions.

王小强, 程海涛, 陈哲, 等. 含盐量及pH变化对高盐废水除硬除硅效果影响研究[J]. 煤炭工程, 2024, 56(12): 19-25.

参考文献

[1]高艳.高含盐工业废水处理技术研究进展[J].化学与粘合, 2022, 44(01):72-75
[2]SHI Jingxin，HUANG Wenping，HAN Hongjun，et al.Review on treatment technology of salt wastewater in coal chemical industry of China［J］. Desalination，2020，493:114640.
[3]陈治池，何强，蔡然，等.碳中和趋势下数学模拟在污水处理系统中的发展与综合应用[J].中国环境科学, 2022, 42(6):2587-2602
[4]WANG Qinzhuo，LI Na，BOLTO B，et al.Desalination by pervapora?tion：A review［J］. Desalination，2016，387:46-60.
[5]刘展，李娜，郭瑞亚，等.高盐废水“零排放”案例分析[J].化学工程, 2020, 48(11):17-22
[6]SHIRAZI S，LIN C J，CHEN Dong.Inorganic fouling of pressure driven membrane processes：A critical review[J].Desalination, 2010, 250(1):236-248
[7]OREN Y，KORNGOLD E，DALTROPHE N，et al.Pilot studies on high recovery BWRO-EDR for near zero liquid discharge approach［J］Desalination，2010，261（3）:321-330.
[8]GORZALSKI A S，CORONELL O.Fouling of nanofiltration membranes in full- and bench-scale systems treating groundwater containing silica［J］. Journal of Membrane Science，2014，468:349-359.
[9]石健，张阳光，周海峰，等.不同温度下活性硅酸三种形态的变化特点[J].南通大学学报自然科学版, 2009, 8(3):51-54
[10]XIE Ming，GRAY S R.Silica scaling in forward osmosis：From solution to membrane interface［J］. Water Research，2017，108:232-239.
[11]MILNE N A，O’REILLY T，SANCIOLO P，et al.Chemistry of silica scale mitigation for RO desalination with particular reference to re? mote operations［J］. Water Research，2014，65:107-133.
[12]THOMPSON J，RAHARDIANTO A，KIM S，et al.Real-time direct detection of silica scaling on RO membranes［J］. Journal of Membrane Science，2017，528:346-358.
[13]周娜娜, 高永强, 邵华, 等.化学混凝法同步去除废水中硅和硬度的研究[J].环境工程, 2018, 36增刊:75-77.
[14]史元腾，王小强，寇光辉，等.反渗透浓盐水双碱法除硬与除硅工艺研究[J].水处理技术, 2019, 45(12):110-112

含盐量及pH变化对高盐废水除硬除硅效果影响研究

Based on the change of pH and salt content, the change rule of hard and silicon removal in high salt wastewater was studied.

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