微气泡气浮技术用于去除煤矿矿井水乳化油的模拟试验研究

doi:10. 11799/ ce202505026

摘要/Abstract

摘要：

针对煤矿矿井水中乳化油难以通过传统混凝沉淀有效处理的问题，设计开发了微气泡气浮系统，该系统结合微气泡的特殊物理性质和多相流泵的高效溶气能力，显著提高了对乳化油颗粒的捕获与分离效率。研究了溶气压力、气水比对微气泡粒径分布以及稳定性的影响，以及溶气压力、气水比、进水含盐量、含油量和药剂投加量对除油效果的影响。结果表明，当微气泡发生器运行在0.55 MPa溶气压力及6%气水比的条件下时，微气泡稳定性最佳，平均粒径低至9.24μm，除油率可达45.80%；在较高油浓度和较高含盐量的条件下该系统仍然保持40%的除油率；运用响应曲面法优化药剂投加组合，确定了PAC投加浓度为107.900 mg/L，阳离子PAM投加量为10.034mg/L，复合破乳剂用量为90.000mg/L的最佳投药比例，此时乳化油去除效率可以提升至94.52%。因此，微气泡气浮技术在处理高盐、高乳化油含量煤矿矿井水方面具有高效性和适用性。

关键词:

乳化油 , 煤矿矿井水 , 微气泡气浮 , 混凝剂

Abstract: the coal mine wastewater with high salinity is difficult for efficient treatment by traditional coagulation and precipitation methods. we designed an effective process of micro-bubble air flotation system for coal mine wastewater treatmen. The influences of dissolved gas pressure and gas-water ratio on particle size distribution and stability of micro-bubbles were studied, as well as the influences of dissolved gas pressure, gas-water ratio, water salt content, oil content and chemical dosage on oil removal effect were also studied. The results showed that when the microbubble generator is operated under the conditions of 0.55 MPa dissolved gas pressure and 6% gas-water ratio, the stability of the microbubble is the best, the average particle size is as low as 9.24 μm, and the oil removal rate can reach 45.80%. Under the condition of higher oil concentration and higher salt content, the system still maintains 40% treatment effect. Response surface method was used to optimize the dosing combination, and the optimal dosing ratio of PAC dosing concentration of 107.900 mg/L, cationic PAM dosing amount of 10.034 mg/L, and compound demulsifier dosage of 90.000 mg/L was determined. At this time, the removal efficiency of emulsified oil could be increased to 94.52%. Therefore, the micro-bubble air flotation technology has high efficiency and applicability in the treatment of mine water with high salt and high emulsified oil content.

中图分类号:

TD744

王小强, 程海涛, 崔圣达, 等.

微气泡气浮技术用于去除煤矿矿井水乳化油的模拟试验研究 [J]. 煤炭工程, 2025, 57(5): 193-199.

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