IMPROVEMENT OF FOOD WASTE AEROBIC BIOLOGICAL TREATMENT PERFORMANCE BY COMPOUND MICROBIAL AGENTS

HU Yadong; FAN Depeng; KONG Weijie; LEI Mingke; DU Qingping; QIAN Weiqiang; WANG Futao; LI Jing

doi:10.13205/j.hjgc.202204014

Volume 40 Issue 4

Apr. 2022

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2022 > 40(4): 97-105

ZHANG Bo, ZHAO Yi-hua, TAO Jun, JI Min, MA Tong-yu, SHANG Chen. INFLUENCE MECHANISM AND KINETIC STUDY OF CaO PRETREATMENT ON HIGH-SOLID SLUDGE ANAEROBIC DIGESTION PERFORMANCE[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(4): 140-146. doi: 10.13205/j.hjgc.202104022

Citation:

HU Yadong, FAN Depeng, KONG Weijie, LEI Mingke, DU Qingping, QIAN Weiqiang, WANG Futao, LI Jing. IMPROVEMENT OF FOOD WASTE AEROBIC BIOLOGICAL TREATMENT PERFORMANCE BY COMPOUND MICROBIAL AGENTS[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(4): 97-105. doi: 10.13205/j.hjgc.202204014

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IMPROVEMENT OF FOOD WASTE AEROBIC BIOLOGICAL TREATMENT PERFORMANCE BY COMPOUND MICROBIAL AGENTS

doi: 10.13205/j.hjgc.202204014

1. Bio-form Engineering Co., Ltd., Foshan 528000, China;
2. Bio-form Biotechnology(Guangdong) Co., Ltd., Foshan 528000, China;
3. Guangdong University of Technology, Guangzhou 510000, China;
4. Foshan China Academy of invention Achievement Transformation, Foshan 528000, China

Received Date: 2021-07-20
Available Online: 2022-07-06

Abstract

Abstract

In a small-scale experiment, four groups of self-made composting reactors were used to explore the effect of compound microbial agents on the aerobic biological treatment process and composting effect of food wastes. Using sawdust as an auxiliary material, the heterotrophic bacteria from BIOFORM ^® Waste Digester (WD), the composite thermostable bacteria screened and prepared in previous study (TB), and the mixture of WD+TB were added separately. The no bacteria group was selected as the control (CK). The total weight of pile, temperature, moisture, organic matter content of dry matter, pH value and seed germination index (GI) were determined to study the treatment process. The results showed that when the initial moisture content, organic matter content of dry matter, C/N, amount of auxiliary materials (weight ratio of food waste) and amount of bacteria were (63.5±0.5)%, (96.6±0.9)%, 34.9±2.7, 20% and 25 mL/kg respectively, (WD+TB) group had the longest high temperature period and the highest temperature peak. During the 15-day trial period, (WD+TB) group performed best in terms of total weight loss rate (80.7%), the organic matter loss rate (64.3%) and the daily mean organic matter reduction rate (2.13 times of CK), with the lowest water soluble ammonia nitrogen content and E4/E6, and the highest germination rate index (96.3±26.7)%. This composite microbial agent (WD+TB) could effectively improve the aerobic biological treatment effect of food waste and significantly improve the composting efficiency.
- compound microbial agent,
- food waste,
- aerobic biological treatment,
- high temperature period,
- aerobic composting

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References

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