水力空化联合臭氧氧化协同促进剩余污泥溶胞

潘康红; 明磊强; 高沛; 王旭东; 李先国; 张大海

doi:10.13205/j.hjgc.202401017

水力空化联合臭氧氧化协同促进剩余污泥溶胞

doi: 10.13205/j.hjgc.202401017

1. 中国海洋大学化学化工学院, 山东青岛 266000;
2. 液化空气(中国)研发有限公司, 上海 200030

基金项目:

山东省重点研发计划(重大科技创新工程)(2020CXGC010703-5)；中国地质调查局舟山海洋地质灾害野外科学观测研究站开放基金(ZSORS-22-02)

详细信息

作者简介:
潘康红(1997-),女,硕士研究生,主要研究方向为污泥资源化研究。pankanghong@163.com

通讯作者:
张大海(1978-)男,博士,副教授。dahaizhang@ouc.edu.cn

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- 文章访问数: 81
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- 被引次数: 0
出版历程
- 收稿日期: 2022-09-19
- 网络出版日期: 2024-04-29

SYNERGETIC PRETREATMENT OF EXCESS SLUDGE BY ENHANCING SLUDGE LYSIS BY HYDRODYNAMIC CAVITATION COMBINED WITH OZONATION

1. School of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266000, China;
2. Air Liquide(China) R&D Co., Ltd., Shanghai 200030, China

摘要

摘要: 为有效提高剩余污泥溶胞效率并减少剩余污泥产量,采用水力空化与臭氧反应相结合的方法促进剩余污泥溶胞。系统探究了二者协同作用下剩余污泥的减量效果、有机质的释放、胞外聚合物(EPS)的解聚,分析污泥形态结构和各类溶解性有机物的变化趋势。结果表明:当臭氧浓度为(160±10) g/m³,水力空化联合臭氧处理135 min后,污泥的挥发性悬浮固体和总悬浮固体去除率分别为79.12%和68.55%,DD_COD达到90.67%,ρ(NH⁺₄-N)由(3.15±0.07) mg/L增加至(42.75±0.21) mg/L,蛋白质和多糖总量分别提高了627.05%和957.28%。剩余污泥经水力空化联合臭氧氧化处理后,粒度扫描和显微镜观察结果表明其颗粒较原泥显著变小;三维荧光结果显示该方法可有效增强污泥溶胞效果,在促进污泥溶胞和减量方面表现出显著的协同效应。
- 剩余污泥 /
- 水力空化 /
- 臭氧氧化 /
- 溶胞
Abstract: This study intends to effectively improve the efficiency of sludge lysis and reduce the yield of excess sludge through hydrodynamic cavitation combined with ozone. To reveal the synergism of hydrodynamic cavitation/O₃ treatment, a suite of analysis was implemented: sludge concentration, the content of organic matter, the destruction and three-dimensional excitation-emission matrix spectra of EPS, the particle size of sludge flocs and microphotograph of sludge. When the ozone concentration and operation time was(160±10) g/m³ and 135 min, the removal rates of VSS and TSS reached 79.12% and 68.55%, respectively, DD_COD reached 90.67%, NH⁺₄-N increased from(3.15±0.07) mg/L to(42.75±0.21) mg/L, total protein and polysaccharide content in the sludge supernatant increased by 627.05% and 957.28%, respectively. From the change of particle size distribution of sludge and the observation of floc structure under the microscope, it was concluded that the particles of sludge flocs are significantly smaller than the raw sludge, by pretreatment of hydrodynamic cavitation combined with ozonation. The analysis of three-dimensional fluorescence results showed that this method enhanced the effect of sludge lysis and the hydrodynamic cavitation/O₃ pretreatment showed a significant synergistic effect in enhancing sludge lysis.
- excess sludge /
- hydrodynamic cavitation /
- ozonation /
- lysis

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