CONDITION OPTIMIZATION FOR DYNAMIC EXPERIMENTS OF THERMAL ALKALINE CRACKING SLUDGE

ZHAO Hong-yan; ZHOU Ji-ti; JIN Ruo-fei; WANG Qing-xuan; ZHANG Ye; LIU Jia-xuan

doi:10.13205/j.hjgc.202007011

Volume 38 Issue 7

Nov. 2020

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2020 > 38(7): 71-74,121

ZHANG Zhi-jie, WEN Fei, ZHANG Ya-qun, ZHOU Jing, FENG Ai-ping. CHARACTERISTICS AND SOURCE ANALYSIS OF NON-POINT SOURCE POLLUTION LOAD IN THE YELLOW RIVER BASIN ON A REGIONAL SCALE[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(9): 81-88,142. doi: 10.13205/j.hjgc.202209011

Citation:

ZHAO Hong-yan, ZHOU Ji-ti, JIN Ruo-fei, WANG Qing-xuan, ZHANG Ye, LIU Jia-xuan. CONDITION OPTIMIZATION FOR DYNAMIC EXPERIMENTS OF THERMAL ALKALINE CRACKING SLUDGE[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(7): 71-74,121. doi: 10.13205/j.hjgc.202007011

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CONDITION OPTIMIZATION FOR DYNAMIC EXPERIMENTS OF THERMAL ALKALINE CRACKING SLUDGE

doi: 10.13205/j.hjgc.202007011

1. Key Laboratory of Industrial Ecology and Environmental Engineering, Dalian University of Technology, Dalian 116024, China;
2. Dalian Environmental Monitoring Center, Dalian 116023, China;
3. School of Environmental Science & Technology, Harbin Institute of Technology, Harbin 150090, China

Received Date: 2019-05-05

Abstract

Abstract

Taking the secondary sludge of municipal sewage treatment plant as the research object and using thermal alkali treatment process to treat the sludge, this study investigated the optimal treatment condition and analyzed the guiding function of static experiment to dynamic experiment. The results showed that for the static experiment of thermal alkali treating sludge, it had the optimal initial pH of 13, temperature of 30℃, and time of 10 h. Under the optimum conditions, the dissolution rate of COD was 61.53%, and the concentration of protein and polysaccharide in aqueous medium were 761.73, 649.85 mg/L respectively; the optimum reaction time of dynamic experiment was 10 h, and under the optimum conditions, the COD dissolution rate was 75.77%, the concentration of the protein and polysaccharide were 1024.70, 842.34 mg/L, which were higher than the results of static experiment. The results showed that the static experiment of sludge had practical guidance to the dynamic experiment, and thermal-alkaline method had a good application prospect.
- thermal-alkaline method,
- dynamic experiment,
- COD dissolution rate,
- protein,
- polysaccharides

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References

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