工业水处理 ›› 2024, Vol. 44 ›› Issue (6): 94-100. doi: 10.19965/j.cnki.iwt.2023-0544

• 试验研究 • 上一篇    下一篇

碱激活PMS氧化法协同SBBR深度处理焦化废水研究

张玉红(), 张盾超, 宋秀兰(), 何娜   

  1. 太原理工大学环境科学与工程学院,山西 晋中 030600
  • 收稿日期:2024-03-29 出版日期:2024-06-20 发布日期:2024-06-18
  • 作者简介:

    张玉红(1998— ),硕士研究生。E-mail:

    宋秀兰,教授,硕导。E-mail:

  • 基金资助:
    山西省基础研究计划项目(201901D111067); 城镇污水深度处理与资源化利用技术国家工程实验室开放基金项目(201904)

Advanced treatment of coking wastewater with peroxymonosulfate oxidation activated by base combined with SBBR

Yuhong ZHANG(), Dunchao ZHANG, Xiulan SONG(), Na HE   

  1. School of Environmental Science and Engineering, Taiyuan University of Technology, Jinzhong 030600, China
  • Received:2024-03-29 Online:2024-06-20 Published:2024-06-18

摘要:

采用碱激活过一硫酸盐(PMS)氧化法协同序批式生物膜反应器(SBBR)工艺深度处理焦化废水,研究当以NaOH作为激活剂时,pH、PMS浓度和温度对碱/PMS体系去除焦化废水生化出水COD和色度的影响,之后考察SBBR工艺处理碱/PMS体系出水的效果。研究结果表明,碱/PMS体系深度处理焦化废水的最佳条件为温度25 ℃、pH=10、PMS投加浓度7 mmol/L、反应时间4 h,在此条件下色度和COD的去除率分别为96.1%和45.9%。电子顺磁共振实验表明碱/PMS体系存在1O2、O2 •-、∙OH和SO4 •-等活性氧物种。废水经碱/PMS体系处理后可生化性提高,之后经SBBR工艺进一步处理后出水COD<60 mg/L。总体而言,碱激活PMS氧化法协同SBBR工艺对COD的平均去除率达66.7%。焦化废水生化出水处理前后的三维荧光光谱分析表明,碱/PMS体系协同SBBR工艺能去除焦化废水生化出水中的芳香蛋白类物质和类腐殖酸物质。

关键词: 碱, 过一硫酸盐, 焦化废水生化出水, 序批式生物膜反应器, 高级氧化

Abstract:

The advanced treatment of bio-treated coking wastewater was carried out using peroxymonosulfate(PMS)oxidation activated by base combined with sequencing biofilm batch reactor(SBBR). The effects of pH, PMS concentration, and temperature on the removal of COD and chroma of bio-treated coking wastewater were investigated by base/PMS system with sodium hydroxide as activater. The optimal conditions were temperature of 25 ℃, pH of 10, PMS concentration of 7 mmol/L, reaction time of 4 h. Under this condition,the removal rates of COD and chroma were 45.9% and 96.1%,respectively. EPR analyse indicated that 1O2, O2 ·-, ∙OH and SO4 ·- existed in the base/PMS system. After base/PMS system,the biodegradabality of waste water improved. The COD of effluent after SBBR treatment was less than 60 mg/L. The average removal rate of COD reached 66.7% with PMS oxidation activated by base combined with sequencing biofilm batch reactor. The three-dimensional fluorescence spectrum showed that the base/PMS system combined with SBBR could remove aromatic-like protein substances and humic-like acids.

Key words: base, peroxymonosulfate, bio-treated coking wastewater, sequencing biofilm batch reactor, advanced treatment

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