UTILIZATION OF SEDIMENTS DREDGED FROM WATER BODIES AND ITS ENERGY REUTILIZATION

LI Gang; HAN Ming-shuang; XU Hai-hong

doi:10.13205/j.hjgc.202106009

Volume 39 Issue 6

Jan. 2022

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LI Gang, HAN Ming-shuang, XU Hai-hong. UTILIZATION OF SEDIMENTS DREDGED FROM WATER BODIES AND ITS ENERGY REUTILIZATION[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(6): 55-58,71. doi: 10.13205/j.hjgc.202106009

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LI Gang, HAN Ming-shuang, XU Hai-hong. UTILIZATION OF SEDIMENTS DREDGED FROM WATER BODIES AND ITS ENERGY REUTILIZATION[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(6): 55-58,71. doi: 10.13205/j.hjgc.202106009

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UTILIZATION OF SEDIMENTS DREDGED FROM WATER BODIES AND ITS ENERGY REUTILIZATION

doi: 10.13205/j.hjgc.202106009

1. School of Resource & Environment, Henan University of Engineering, Zhengzhou 451191, China;
2. Environmental Branch, Central Research Institute of Building & Construction Co., Ltd, MCC, Beijing 100088, China;
3. Appraisal Center for Environment & Engineering Ministry of Ecology and Environment, Beijing 100012, China

Received Date: 2020-06-29
Available Online: 2022-01-18

Abstract

Abstract

There were a great number of rivers and lakes in China, and the constituent of sediments dredged from waters had the characteristics of high complexity and large quantity. In this paper, the utilization of dredged sediment was introduced, and its energy reutilization was put forward. The pyrolysis should be considered seriously, due to its advantages of solidification of heavy metals in sediments, less pollution emission and energy recovery. Adding suitable catalysts could improve the pyrolysis efficiency and control the distribution of reaction products. By adding suitable metallic oxide catalysts to sediments for pyrolysis, it was found that in the low-temperature pyrolysis(below 300℃), when the dosage of catalysts was 2% above, the hydrogen proportion in gas phase products could increase by about 50%. After catalytic pyrolysis treatment, the yield of biochar was 40%~45%, and the volume of solid phase products was significantly reduced.
- sediment,
- thermo-chemical conversion,
- energy reutilization,
- catalysis

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References(29)

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