植物纤维性农业废弃物混合贮存污泥生物干化研究

doi:10.3976/j.issn.1002-4026.2023.04.016

摘要/Abstract

摘要：

以常见的植物纤维性农业废弃物(玉米秸秆、花生壳、稻草)作为调理剂,研究其与贮存污泥混合进行生物干化的效果。实验过程中设置了玉米秸秆、花生壳、稻草、对照组4个实验组,实验结果表明植物纤维性农业废弃物可作为贮存污泥生物干化过程的调理剂,且稻草组的效果最好,其堆体最高温度可达57.5 ℃,含水率由71.83%降至60.01%,挥发性固体(VS)的质量分数由62.01%降至52.02%,溶解性有机碳(DOC)与溶解性有机氮(DON)质量分数均呈现下降的趋势且下降幅度最大。w (DOC)/ w(DON)在生物干化过程中逐渐降低,且稻草组比例由4.29降至2.53,说明生物干化可以使物料趋于稳定。

关键词: 植物纤维性农业废弃物, 贮存污泥, 生物干化, 稳定性

Abstract:

In this study, common plant-fiber agricultural wastes (corn stalks, peanut shells, and straw) were mixed to storage sludge as bulking agents to study their biodrying performance. Four experimental groups were used, namely, corn stalks, peanut shells, straw, and a control group. Results showed that plant-fiber agricultural wastes could be used as bulking agents in the biodrying process of storage sludge, and the straw group performed best. The straw pile reached a maximum temperature of 57.5 ℃, and the moisture content decreased from 71.83% to 60.01%. The mass fraction of volatile solids (VS) decreased from 62.01% to 52.02%, and the mass ratio of dissolved organic carbon (DOC) and dissolved organic nitrogen (DON) showed a decreasing trend with the largest decrease. The w(DOC)/w(DON) gradually decreased during the biodrying process, and the ratio of the straw pile decreased from 4.29 to 2.53, indicating that biodrying could stabilize the materials.

Key words: plant-fiber agricultural wastes, storage sludge, biodrying, stability

中图分类号:

X705

刘甜甜, 王梦菲, 吴小苏, 焦有权, 温江丽. 植物纤维性农业废弃物混合贮存污泥生物干化研究[J]. 山东科学, 2023, 36(4): 134-140.

LIU Tiantian, WANG Mengfei, WU Xiaosu, JIAO Youquan, WEN Jiangli. Study on biodrying plant-fiber agricultural wastes mixed with storage sludge[J]. Shandong Science, 2023, 36(4): 134-140.

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原料	w(总糖)	w(蛋白质)	w(脂肪)	w(纤维素)	w(半纤维素)	w(木质素)
玉米秸秆	11.460	9.50	2.04	31.62	27.31	15.09
花生壳	10.210	6.36	1.26	62.30	10.12	3.47
稻草	5.045	6.30	1.26	28.95	25.11	16.01