污泥典型处理处置过程对矿物油的削减研究——以北京城市生活污泥“热水解+高级厌氧消化+板框脱水+土地利用”为例

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摘要测定了北京市某污水处理厂"热水解+厌氧消化+板框脱水"处理过程中各工艺节点的污泥样品的矿物油浓度,计算了矿物油在污泥处理过程中的质量流,开展了园林土地利用实验并检测了土壤-植物系统对矿物油的吸收及削减.该污水处理厂污泥中含有较高浓度的矿物油且处理过程对矿物油无明显削减,板框脱水污泥饼中矿物油浓度为4533.8~10385.9mg/kg,土壤-植物系统平均削减了84.1%的矿物油,但矿物油主要积累于黑麦草叶片以及向日葵花盘等主要可利用部分,因此需要对污泥土地利用处置过程中矿物油生态安全性进一步研究.

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	张玉晖
	朱芬芬
	陈倩
	赵冰
	王欢
	周湉湉
	王轶钰
	王佳伟
	付兴民

关键词 ：城市污泥, 矿物油, 热水解, 厌氧消化, 土地利用

Abstract：Mineral oil concentration in sludge samples collected from each units of the sludge "thermal hydrolysis + anaerobic digestion + plate frame dehydration" treatment process in a wastewater treatment plant in Beijing was measured, the mass flow of mineral oil in the sludge treatment process was calculated, and the planting experiment was conducted to detect the absorption and reduction of mineral oil in the soil-plant system. The sludge from this wastewater treatment plant contained high concentration of mineral oil, and the treatment process of "thermal hydrolysis + anaerobic digestion + plate frame dehydration" had poor effect on reducing mineral oil. The concentration of mineral oil in the sludge cake was 4533.8~10385.9mg/kg and the soil-plant system had obvious effect on removing mineral oil from soil with an average reduction of 84.1%. However, mineral oil mainly accumulated in the valuable parts such as ryegrass leaves and sunflower flowers. Therefore, it is necessary to further study the ecological security of mineral oil in the land utilization and disposal process of sludge.

Key words： municipal sludge mineral oil thermal hydrolysis anaerobic digestion forestland utilization

收稿日期: 2023-01-18

PACS:

X705

基金资助:国家重点研发计划项目(2019YFC1906501)

通讯作者: 朱芬芬,教授,zhufenfen@ruc.edu.cn E-mail: zhufenfen@ruc.edu.cn

作者简介: 张玉晖(1998-)男,河南淮阳人,中国人民大学环境学院硕士研究生,主要研究方向为固体废物处理处置过程中有机污染物迁移转化和危害分析.发表论文2篇.ruc-zhangyuhui@163.com

引用本文:

张玉晖, 朱芬芬, 陈倩, 赵冰, 王欢, 周湉湉, 王轶钰, 王佳伟, 付兴民. 污泥典型处理处置过程对矿物油的削减研究——以北京城市生活污泥“热水解+高级厌氧消化+板框脱水+土地利用”为例[J]. 中国环境科学, 2023, 43(8): 4057-4064. ZHANG Yu-hui, ZHU Fen-fen, CHEN Qian, ZHAO Bing, WANG Huan, ZHOU Tian-tian, WANG Yi-yu, WANG Jia-wei, FU Xing-min. Reduction of mineral oil in typical sludge treatment and disposal process-Taking the “thermal hydrolysis + advanced anaerobic digestion + plate frame dehydration + land utilization” treatment and disposal system of municipal sludge in Beijing as an example. CHINA ENVIRONMENTAL SCIENCECE, 2023, 43(8): 4057-4064.

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