摘要
煤化工废水严重阻碍现代煤化工的发展,优化环保技术是有效改善现状的最佳方法。煤化工废水中过量的苯酚和总有机碳(TOC)会对人体健康和生态系统造成危害,针对此问题,采用高级氧化技术,即TiO_(2)纳米粒子与臭氧微纳米气泡(O_(3)-MNBs)联用技术,去除煤化工废水中的TOC和苯酚,实现煤化工废水的高效处理;从TiO_(2)纳米粒子的投加量、O_(3)的投加量以及溶液的初始pH值3方面出发,探索TiO_(2)/O_(3)-MNBs联用技术对煤化工废水处理效果的影响,确定最佳反应条件,并对TiO_(2)/O_(3)-MNBs联用技术的使用成本进行分析。结果表明:当TiO_(2)纳米粒子投加量为4.0 mg/L,O_(3)通气量为20 mg/min,初始pH=10时,对煤化工废水中的TOC和苯酚去除效能最佳,且该体系运行成本为0.57元/t(水),相比传统O_(3)-MNBs技术,成本降低3.4%,经济效益有所提升。TiO_(2)/O_(3)-MNBs联用技术为煤化工废水的有效处理提供了新的途径。
Coal chemical wastewater hinders the development of modern coal chemical industry to great extent,and the optimizing technology of environmental protection is the best way to effectively improve the current situation.Excessive phenol and total organic carbon(TOC)in coal chemical wastewater will do harm to human health and ecosystem,and for this,the advanced oxidation technology was adopted,or,TiO_(2) nanoparticles and ozone Micro-Nano Bubbles(O_(3)-MNBs)combined technology,to remove TOC and phenol in coal chemical wastewater,and the efficient treatment of coal chemical wastewater was achieved.Based on the dosage of TiO_(2) nanoparticles,the dosage of O_(3) and the initial pH value of the solution,the influence of TiO_(2)/O_(3)-MNBs combined technology on the treatment effect of coal chemical wastewater was explored,and the optimal reaction conditions were determined.The use cost of TiO_(2)/O_(3)-MNBs combined technology was analyzed.The results show that:when TiO_(2) nanoparticle dosage is 4.0 mg/L,O_(3) ventilation is 20 mg/min,and initial pH is 10,the removal efficiency of TOC and phenol in coal chemical wastewater is the best,and the operating cost of the system is 0.57 yuan/ton(water);compared with the traditional O_(3)-MNBs technology,the cost is reduced by 3.4%,and the economic benefit is improved.TiO_(2)/O_(3)-MNBs combined technology provides a new way for the effective treatment of coal chemical wastewater.
作者
张哲
张小丽
王标
张鹤
高碧荷
方雨菲
肖巍
ZHANG Zhe;ZHANG Xiaoli;WANG Biao;ZHANG He;GAO Bihe;FANG Yufei;XIAO Wei(School of Resources Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,China;Anhui Hengyu Environmental Protection Equipment Manufacturing Co.,Ltd.,Fuyang 236000,China;Metal Branch of Jinduicheng Molybdenum Industry Co.,Ltd.,Xi’an 710075,China)
出处
《西安科技大学学报》
北大核心
2025年第1期182-190,共9页
Journal of Xi’an University of Science and Technology
基金
国家自然科学基金项目(52004197)。
