农村有机生活垃圾与不同原料厌氧共发酵工艺优化

doi:10.16085/j.issn.1000-6613.2021-1181

化工进展 ›› 2022, Vol. 41 ›› Issue (5): 2770-2777.DOI: 10.16085/j.issn.1000-6613.2021-1181

农村有机生活垃圾与不同原料厌氧共发酵工艺优化

刘洋¹^,²(), 叶小梅², 王成成¹^,², 贾昭炎¹^,², 杜静¹^,²^,³, 孔祥平²^,³, 奚永兰²^,³()

^1.江苏大学农业工程学院，江苏镇江 212013
^2.江苏省农业科学院，江苏南京 210014
^3.农业农村部农村可再生能源开发利用华东科学观测实验站，江苏南京 210014

收稿日期:2021-06-03 修回日期:2021-09-08 出版日期:2022-05-05 发布日期:2022-05-24
通讯作者: 奚永兰
作者简介:刘洋（1997—），男，硕士研究生。E-mail：2221916022@stmail.ujs.edu.cn。
基金资助:
国家重点研发计划(2018YFD1100600);江苏省自然科学基金(BK20201242);江苏省农业自主创新资金项目(SCX(21)2175)

Optimization of anaerobic co-digestion process of rural organic household waste with other substrates

LIU Yang¹^,²(), YE Xiaomei², WANG Chengcheng¹^,², JIA Zhaoyan¹^,², DU Jing¹^,²^,³, KONG Xiangping²^,³, XI Yonglan²^,³()

^1.School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
^2.Jiangsu Academy of Agriculture Sciences, Nanjing 210014, Jiangsu, China
^3.East China Scientific Observing and Experimental Station of Development and Utilization of Rural Renewable Energy, Ministry of Agriculture and Rural Affairs, Nanjing 210014, Jiangsu, China

Received:2021-06-03 Revised:2021-09-08 Online:2022-05-05 Published:2022-05-24
Contact: XI Yonglan

摘要/Abstract

摘要：

有效处理农村有机生活垃圾（rural organic household waste, ROW）对美化农村环境具有重要意义，在对其进行高浓度厌氧发酵时容易出现酸化和氨氮抑制现象，导致系统稳定性差。目前尚缺乏ROW不同共发酵底物和进料总固体（total solids，TS）浓度对厌氧发酵的影响研究。为提高厌氧发酵性能，减少环境保护压力，本文对ROW不同共发酵底物配比和不同进料浓度下厌氧共发酵特性进行研究，从而优化农村有机生活垃圾厌氧发酵工艺。文中对取自江苏徐州沛县的农村有机生活垃圾和江苏省农业科学院六合动物实验基地的猪粪（PM）、水稻秸秆（RC）进行厌氧共发酵。当发酵底物为ROW和PM时，甲烷产量随着进料总固体含量TS的升高而增加，最高为257.38mL/g VS；当发酵底物为ROW和RC，或者发酵底物为ROW、PM和RC时，进料TS质量分数从8%增加到12%时，甲烷产量随之增加，最高分别为339.59mL/g VS、322.16mL/g VS，当进料TS质量分数继续升高到15% 时，二者产量均出现降低且均低于其他实验组，分别为231.17mL/g VS、194.67mL/g VS。在本文所设置实验条件下，最优共发酵进料为：发酵底物为ROW和RC，生活垃圾与挥发性固体（VS）质量比为1∶1，进料TS质量分数为12%，甲烷产量为339.59mL/g VS。

关键词: 农村有机生活垃圾, 猪粪, 水稻秸秆, 厌氧共发酵, 沼气

Abstract:

Effective treatment of rural organic domestic waste (ROW) is of great significance to beautify the rural environment. It is prone to acidification and ammonia nitrogen inhibition during high-concentration anaerobic digestion, resulting in poor stability of the system. There is still a lack of research on the effects of different ROW co-digestion substrates and TS(total solids) concentrations on anaerobic digestion. In order to improve the performance of anaerobic digestion and reduce the pressure of environmental protection, the anaerobic co-digestion characteristics of ROW under different substrate ratio and different TS concentration were studied, so as to optimize the anaerobic fermentation process of ROW. The anaerobic co-digestion with different feed concentration was carried out. ROW was collected from Peixian, Xuzhou, Jiangsu Province, and the PM and RC were from the Luhe Animal Experimental Base of Jiangsu Academy of Agricultural Sciences. When the digestion substrates were ROW and PM, the cumulative methane yields increased with the increase of feed TS concentration, and the highest was 257.38mL/g VS. When the digestion substrates were ROW and RC or ROW, PM and RC, the cumulative methane yields increased when the feed TS concentration increased from 8% to 12%, and the highest were 339.59mL/g VS and 322.16mL/g VS, respectively; when the feed TS concentration continued to increase to 15%, the methane yields decreased and were 231.17mL/g VS and 194.67mL/g VS, respectively, which were lower than that of other experimental groups. Under the experimental conditions set in this paper, the optimal co-digestion feed was as follows: the digestion substrate was ROW and RC, VS ratio was 1∶1, the feed TS concentration was 12%, and the cumulative methane yields was 339.59mL/g VS.

Key words: rural organic household waste, pig manure, rice straw, anaerobic co-digestion, biogas

中图分类号:

X712

刘洋, 叶小梅, 王成成, 贾昭炎, 杜静, 孔祥平, 奚永兰. 农村有机生活垃圾与不同原料厌氧共发酵工艺优化[J]. 化工进展, 2022, 41(5): 2770-2777.

LIU Yang, YE Xiaomei, WANG Chengcheng, JIA Zhaoyan, DU Jing, KONG Xiangping, XI Yonglan. Optimization of anaerobic co-digestion process of rural organic household waste with other substrates[J]. Chemical Industry and Engineering Progress, 2022, 41(5): 2770-2777.

图/表 9

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项目	TS /%	VS/ %	总有机碳/g·kg^-1	总氮/g·kg^-1	C/N比
农村有机生活垃圾	60.03±1.85	78.27±0.84	412.83±0.95	25.30±0.12	16.33
猪粪	19.70±0.59	75.61±2.35	384.36±2.15	32.25±1.46	11.92
水稻秸秆	90.91±1.76	87.80±2.43	446.95±3.24	16.72±0.89	26.73

项目	TS /%	VS/ %	总有机碳/g·kg^-1	总氮/g·kg^-1	C/N比
农村有机生活垃圾	60.03±1.85	78.27±0.84	412.83±0.95	25.30±0.12	16.33
猪粪	19.70±0.59	75.61±2.35	384.36±2.15	32.25±1.46	11.92
水稻秸秆	90.91±1.76	87.80±2.43	446.95±3.24	16.72±0.89	26.73

项目	农村有机生活垃圾/g	猪粪/g	水稻秸秆/g
TS-8-1	23.00±0.60	72.50±1.33	0
TS-8-2	25.00±0.86	0	15.00±2.22
TS-8-3	16.00±1.02	50.20±1.21	9.40±0.69
TS-10-1	29.00±1.35	90.50±2.25	0
TS-10-2	31.00±1.42	0	18.00±1.06
TS-10-3	20.00±1.11	63.00±2.22	11.80±1.23
TS-12-1	34.50±1.32	108.50±1.92	0
TS-12-2	37.00±1.25	0	22.00±0.85
TS-12-3	24.00±0.96	75.50±1.46	14.00±0.56
TS-15-1	43.00±1.11	135.50±2.02	0
TS-15-2	46.00±1.28	0	27.00±0.99
TS-15-3	30.00±1.16	94.00±2.11	17.60±0.86

项目	农村有机生活垃圾/g	猪粪/g	水稻秸秆/g
TS-8-1	23.00±0.60	72.50±1.33	0
TS-8-2	25.00±0.86	0	15.00±2.22
TS-8-3	16.00±1.02	50.20±1.21	9.40±0.69
TS-10-1	29.00±1.35	90.50±2.25	0
TS-10-2	31.00±1.42	0	18.00±1.06
TS-10-3	20.00±1.11	63.00±2.22	11.80±1.23
TS-12-1	34.50±1.32	108.50±1.92	0
TS-12-2	37.00±1.25	0	22.00±0.85
TS-12-3	24.00±0.96	75.50±1.46	14.00±0.56
TS-15-1	43.00±1.11	135.50±2.02	0
TS-15-2	46.00±1.28	0	27.00±0.99
TS-15-3	30.00±1.16	94.00±2.11	17.60±0.86

项目	沼气单位VS产气量/mL·g^-1	甲烷单位VS产气量/mL·g^-1
TS-8-1	357.65±1.11	243.91±1.52
TS-8-2	419.07±1.32	237.83±2.04
TS-8-3	406.87±1.41	252.45±2.86
TS-10-1	355.06±1.08	231.78±1.46
TS-10-2	468.10±1.26	280.96±1.85
TS-10-3	452.90±1.21	286.47±1.65
TS-12-1	320.58±1.33	216.18±2.85
TS-12-2	509.23±1.42	339.59±3.42
TS-12-3	467.99±2.02	322.16±1.52
TS-15-1	372.70±3.01	257.38±1.66
TS-15-2	365.94±2.15	231.17±2.54
TS-15-3	311.88±1.98	194.67±2.01

农村有机生活垃圾与不同原料厌氧共发酵工艺优化

Optimization of anaerobic co-digestion process of rural organic household waste with other substrates

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实验组	TS-12-2	TS-8-1	TS-10-1	TS-12-1
TS-8-1	0.000725	—	—	—
TS-8-2	0.000425	—	—	—
TS-8-3	0.0001719	0.014711	—	—
TS-10-1	0.005242	—	—	—
TS-10-2	0.000976	—	0.022393	—
TS-10-3	0.001685	—	0.03177	—
TS-12-1	0.001065	—	—	—
TS-12-2	—	—	—	0.00106475
TS-12-3	0.057101	—	—	0.00008487
TS-15-1	0.000305	—	—	—
TS-15-2	0.002413	—	—	—
TS-15-3	0.000692	—	—	—

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