超声空化化学效应破解剩余污泥的机制研究

doi:10.19965/j.cnki.iwt.2024-0607

摘要/Abstract

摘要：

为考察超声破解剩余污泥的化学效应，用超声对细菌和剩余污泥各作用0~40 min，测量其过程中产生的H₂O₂质量浓度，再用0~40 min内产生相应量的H₂O₂作用细菌和剩余污泥，并对比分析加入异丙醇前后超声对剩余污泥的破解情况。研究结果表明：超声作用细菌和剩余污泥后H₂O₂浓度持续增加，验证了超声空化存在化学效应，超声和H₂O₂对细菌均有破解作用，超声空化的多种效应能促使细胞质流出。通过对比超声和H₂O₂对剩余污泥的破解率、超声和添加异丙醇的超声作用剩余污泥后核酸和肽聚糖浓度的降低率发现，超声空化的化学效应对剩余污泥破解的贡献率为10%左右。

关键词: 超声, 剩余污泥, 污泥破解, 细菌

Abstract:

To investigate the chemical effect of ultrasonic disintegration of excess sludge,bacteria and excess sludge were treated with ultrasonic for 0-40 min,and the content of H₂O₂ produced during the process was measured. In addition,bacteria and excess sludge were treated with the same amount of H₂O₂ as produced during the ultrasonic process. The effect of isopropanol on the ultrasonic disintegration of excess sludge was analyzed. The results showed that the content of H₂O₂ increased continuously after ultrasonic treatment of bacteria and excess sludge,which verified the existence of the chemical effect of ultrasonic cavitation. Both ultrasonic and H₂O₂ had disintegration effect on bacteria,and multiple effects of ultrasonic cavitation could promote cytoplasmic efflux. By comparing the disintegration rates of ultrasonic and H₂O₂ on excess sludge,and the reduction rates of nucleic acid and peptidoglycan concentration after ultrasonic and ultrasonic with the addition of isopropanol,it was concluded that the chemical effect of ultrasonic cavitation contributed about 10% to the disintegration of excess sludge.

Key words: ultrasonic, excess sludge, sludge disintegration, bacteria

中图分类号:

X705

由美雁, 韩进, 张秀秀, 谢元华, 朱彤. 超声空化化学效应破解剩余污泥的机制研究[J]. 工业水处理, 2025, 45(8): 90-95.

Meiyan YOU, Jin HAN, Xiuxiu ZHANG, Yuanhua XIE, Tong ZHU. Study on the disintegration mechanism of excess sludge under the chemical effect of ultrasonic cavitation[J]. Industrial Water Treatment, 2025, 45(8): 90-95.

https://gyscl.magtechjournal.com/CN/Y2025/V45/I8/90

图/表 10

图1 超声作用去离子水、细菌和剩余污泥过程中产生的H₂O₂

Fig.1 The concentration of H₂O₂ produced during ultrasonic of deionized water，bacteria and excess sludge

图2 H₂O₂作用细菌后各指标增长率

Fig.2 The increase rate of disintegration index after H₂O₂ on bacteria

图3 超声和H₂O₂作用细菌后的核酸和肽聚糖浓度

Fig.3 Concentrations of nucleic acid and peptidoglycan in bacteria treated with ultrasound and H₂O₂

图4 超声和H₂O₂作用细菌后的丙二醛浓度

Fig.4 Malondialdehyde concentration in bacteria treated with ultrasound and H₂O₂

图5 超声和H₂O₂作用后细菌透射电镜分析

Fig.5 Transmission electron microscopy analysis of bacteria treated with ultrasound and H₂O₂

图6 超声和H₂O₂作用剩余污泥后的肽聚糖、SCOD、蛋白质和核酸浓度

Fig.6 Concentrations of peptidoglycan，SCOD，protein and nucleic acid in excess sludge treated with ultrasonic and H₂O₂

图7 超声和H₂O₂作用剩余污泥后破解率的对比情况

Fig.7 Comparison of disintegration rate of excess sludge treated with ultrasonic and H₂O₂

图8 3种情况下剩余污泥破解效果对比

Fig.8 Comparison of excess sludge disintegration effects under three conditions

图9 两种情况下超声作用剩余污泥后核酸和肽聚糖浓度

Fig.9 Nucleic acid and peptidoglycan concentrations after ultrasonic treatment of excess sludge under two conditions

图10 添加异丙醇前后超声对剩余污泥破解效果对比

Fig.10 Comparison of ultrasonic disintegration effects on excess sludge before and after adding isopropanol

参考文献 17

[1]	戴晓虎，侯立安，章林伟，等. 我国城镇污泥安全处置与资源化研究［J］.中国工程科学，2022，24（5）：145-153. doi:10.15302/j-sscae-2022.05.017
	DAI Xiaohu， HOU Li’an， ZHANG Linwei，et al.Safe disposal and resource recovery of urban sewage sludge in China［J］. Strategic Study of CAE，2022，24（5）：145-153. doi:10.15302/j-sscae-2022.05.017
[2]	MUSFIRA S A， JESSE J， GOMEZ ANBU，et al. Environment friendly emerging techniques for the treatment of waste biomass：A focus on microwave and ultrasonication processes［J］. Environmental Science and Pollution Research，2023，30（33）：79706-79723. doi:10.1007/s11356-023-28271-9
[3]	MDOLO P， POCOCK J， VELKUSHANOVA K.Optimization of the solubilization of faecal sludge through microwave treatment［J］.Water，2024，16（15）：2094. doi:10.3390/w16152094
[4]	YAO Sai， MA Feng， LIANG Baorui，et al. Mechanism investigation of excess sludge disintegration by stirred ball mill：Utilized transmission electron microscope observation and peptidoglycan concentration determination［J］. Waste and Biomass Valorization，2021，12（12）：6543-6554. doi:10.1007/s12649-021-01478-y
[5]	谢元华，杨岱恩，白冰，等.高压喷射撞击流破解剩余污泥的研究［J］.东北大学学报（自然科学版），2021，42（12）：1790-1796.
	XIE Yuanhua， YANG Daien， BAI Bing，et al. Study on excess sludge disintegration by high pressure jet impingement stream［J］. Journal of Northeastern University（Natural Science），2021，42（12）：1790-1796.
[6]	侯银萍，蔡斌斌，冯文杰，等.热碱预处理对剩余污泥发酵产酸性能的影响［J］.陕西科技大学学报，2022，40（5）：31-37.
	HOU Yinping， CAI Binbin， FENG Wenjie，et al.Effect of thermal alkaline pretreatment on the acids production performance of residual sludge fermentation［J］.Journal of Shaanxi University of Science & Technology，2022，40（5）：31-37.
[7]	SEMBLANTE G U， HAI F I， DIONYSIOU D D，et al. Holistic sludge management through ozonation：A critical review［J］. Journal of Environmental Management，2017，185：79-95. doi:10.1016/j.jenvman.2016.10.022
[8]	沈婷婷，张杰，张光明，等. 超声-碱破解剩余污泥的条件优化［J］. 环境工程学报，2023，17（6）：1947-1954.
	SHEN Tingting， ZHANG Jie， ZHANG Guangming，et al. Condition optimization of ultrasonic-alkali treatment of excess sludge［J］. Chinese Journal of Environmental Engineering，2023，17（6）：1947-1954.
[9]	由美雁. 流体剪切与超声联合作用下剩余污泥的破解研究［D］. 沈阳：东北大学，2014.
	YOU Meiyan. Study on the cracking of excess sludge under the combined action of fluid shear and ultrasound［D］.Shenyang：Northeastern University，2014.
[10]	WANG Fen， WANG Yong， JI Min.Mechanisms and kinetics models for ultrasonic waste activated sludge disintegration［J］.Journal of Hazardous Materials，2005，123（1/2/3）：145-150. doi:10.1016/j.jhazmat.2005.03.033
[11]	WANG Xiaoxia， QIU Zhaofu， LU Shugang，et al. Characteristics of organic，nitrogen and phosphorus species released from ultrasonic treatment of waste activated sludge［J］. Journal of Hazardous Materials，2010，176（1/2/3）：35-40. doi:10.1016/j.jhazmat.2009.10.115
[12]	HASSANNIA B， VANDENABEELE P， VANDEN BERGHE T. Targeting ferroptosis to iron out cancer［J］.Cancer Cell，2019，35（6）：830-849. doi:10.1016/j.ccell.2019.04.002
[13]	ASHOKKUMAR M，VU T， GRIESER F，et al. Ultrasonic treatment of Cryptosporidium oocysts［J］. Water Science & Technology. 2003，47（3）：173-177. doi:10.2166/wst.2003.0191
[14]	汪日平，王继鹏，周正伟，等. Fe₃O₄/石墨烯-H₂O₂预处理对污泥脱水性能的影响及其作用机理［J］.环境工程学报，2017，11（10）：5590-5596.
	WANG Riping， WANG Jipeng， ZHOU Zhengwei，et al.Effect of pretreatment by Fe₃O₄/Graphene-H₂O₂ on sludge dewaterability and its mechanism［J］. Chinese Journal of Environmental Engineering，2017，11（10）：5590-5596.
[15]	KLAI N， RAM S K， SELLAMUTHU B，et al. Critical review of EPS production，synthesis and composition for sludge flocculation［J］. Journal of Environmental Sciences，2018，66（4）：225-245. doi:10.1016/j.jes.2017.05.020
[16]	杨波，张永丽，刘杨，等. BiOI负载Fe₃O₄光催化激活过硫酸盐降解金橙Ⅱ［J］.工业水处理，2017，37（9）：55-59.
	YANG Bo， ZHANG Yongli， LIU Yang，et al.Photo-catalyst BiOI supported Fe₃O₄ for activating persulfate for orange Ⅱ degradation［J］.Industrial Water Treatment，2017，37（9）：55-59.
[17]	杨艳玲，马长红，李星，等. 超声波灭活水中微生物试验研究［J］.北京工业大学学报，2015，41（3）：446-451.
	YANG Yanling， MA Changhong， LI Xing，et al. Experimental study on inactivation of microorganism in aqueous solution using ultrasound［J］.Journal of Beijing University of Technology，2015，41（3）：446-451.

选择文件类型/文献管理软件名称

选择包含的内容