PILOT STUDY ON THE SYNERGISTIC AEROBIC COMPOSTING OF BLACK-ODOR WATER DREDGING SEDIMENT COUPLED WITH BIOMASS MATERIALS

SONG Chuxuan; TANG Wenying; LUO Shuangxue; KUANG Ge; ZHANG Wei; ZHOU Lean; GAO Yang; YUAN Yufei; SUN Shiquan

doi:10.13205/j.hjgc.202403017

Volume 42 Issue 3

Mar. 2024

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2024 > 42(3): 138-146

SONG Chuxuan, TANG Wenying, LUO Shuangxue, KUANG Ge, ZHANG Wei, ZHOU Lean, GAO Yang, YUAN Yufei, SUN Shiquan. PILOT STUDY ON THE SYNERGISTIC AEROBIC COMPOSTING OF BLACK-ODOR WATER DREDGING SEDIMENT COUPLED WITH BIOMASS MATERIALS[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(3): 138-146. doi: 10.13205/j.hjgc.202403017

Citation:

SONG Chuxuan, TANG Wenying, LUO Shuangxue, KUANG Ge, ZHANG Wei, ZHOU Lean, GAO Yang, YUAN Yufei, SUN Shiquan. PILOT STUDY ON THE SYNERGISTIC AEROBIC COMPOSTING OF BLACK-ODOR WATER DREDGING SEDIMENT COUPLED WITH BIOMASS MATERIALS[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(3): 138-146. doi: 10.13205/j.hjgc.202403017

Citation:

SONG Chuxuan, TANG Wenying, LUO Shuangxue, KUANG Ge, ZHANG Wei, ZHOU Lean, GAO Yang, YUAN Yufei, SUN Shiquan. PILOT STUDY ON THE SYNERGISTIC AEROBIC COMPOSTING OF BLACK-ODOR WATER DREDGING SEDIMENT COUPLED WITH BIOMASS MATERIALS[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(3): 138-146. doi: 10.13205/j.hjgc.202403017

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PILOT STUDY ON THE SYNERGISTIC AEROBIC COMPOSTING OF BLACK-ODOR WATER DREDGING SEDIMENT COUPLED WITH BIOMASS MATERIALS

doi: 10.13205/j.hjgc.202403017

1. School of Hydraulic and Environmental Engineering, Changsha University of Science & Technology, Changsha 410114, China;
2. Transportation Construction Cost Management Station, Department of Transportation of Hunan Province, Changsha 410016, China;
3. Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha 410114, China

Received Date: 2023-02-10
Available Online: 2024-05-31

Abstract

Abstract

Different proportions of bran and fermented grass were applied to aerobically compost the dredged sediment from the black smelly water bodies. A total of seven groups of piles were set up according to different conditioning agent dosages for pilot tests, and the effects of different raw material ratios on the physical and chemical properties of the piles during aerobic composting were revealed by testing the physical and chemical properties, seed germination rate and other indicators. The results showed that: at the beginning of composting, the moisture content was controlled between 50% and 55%, and C/N was controlled between 25 and 35, the temperature of each pile exceeded 50 ℃ after 1 d, and the high temperature period (temperature >55 ℃) was maintained for more than 5 d in each group. After the composting process, the volatile fraction of each group was stable at 20% to 30%, the water content was about 7% to 16%, and the pH value was about 8.15 to 8.30. The seed germination index (GI) of each group was greater than 140%, among which the T2 group had a significant nitrogen fixation effect and the best compost quality. Its performance indicators such as texture, pH, conductivity, organic matter content, soil infiltration rate, cation exchange amount and GI all met the requirements of the specification of Green Planting Soil (CJ/T 340—2016), indicating that the scheme of dredging sediment∶fermented grass∶bran=400∶125∶125 can significantly reduce the biological toxicity of compost materials and produce good high fertility planting soil.
- dredging sediment,
- aerobic composting,
- planting soil,
- biomass materials,
- resource utilization

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References(40)

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