EFFECTS OF THERMAL HYDROLYSATES FROM MUNICIPAL SOLID WASTE ON SOIL ENZYME ACTIVITY AND SPINACH GROWTH

WANG Zhenhua; WU Juan; SONG Jianguo; BAI Jie

doi:10.13205/j.hjgc.202203019

Volume 40 Issue 3

Mar. 2022

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2022 > 40(3): 126-131

WANG Zhenhua, WU Juan, SONG Jianguo, BAI Jie. EFFECTS OF THERMAL HYDROLYSATES FROM MUNICIPAL SOLID WASTE ON SOIL ENZYME ACTIVITY AND SPINACH GROWTH[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(3): 126-131. doi: 10.13205/j.hjgc.202203019

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WANG Zhenhua, WU Juan, SONG Jianguo, BAI Jie. EFFECTS OF THERMAL HYDROLYSATES FROM MUNICIPAL SOLID WASTE ON SOIL ENZYME ACTIVITY AND SPINACH GROWTH[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(3): 126-131. doi: 10.13205/j.hjgc.202203019

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EFFECTS OF THERMAL HYDROLYSATES FROM MUNICIPAL SOLID WASTE ON SOIL ENZYME ACTIVITY AND SPINACH GROWTH

doi: 10.13205/j.hjgc.202203019

WANG Zhenhua^1,2,
WU Juan³,
SONG Jianguo⁴,
BAI Jie^{1,5
,
,}

1. College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China;
2. Environmental Sanitation Management Center of Yantai, Yantai 264000, China;
3. College of Resources and Environment, Qingdao Agricultural University, Qingdao 266109, China;
4. School of Environmental and Material Engineering, Yantai University, Yantai 264005, China;
5. The Key Laboratory of Marine Environmental Science and Ecology, Ministry Education, Ocean University of China, Qingdao 266100, China

Received Date: 2021-08-14
Available Online: 2022-07-07

Abstract

Abstract

In this paper, the changes of soil enzyme activity and spinach biomass and their effects on soil physical and chemical properties and crop growth during spinach planting were studied by pot comparative experiment with two types of nutrient soils(nutrient soil A of municipal solid waste after thermal hydrolysis + high temperature aerobic compost and nutrient soil B of municipal solid waste after thermal hydrolysis) produced by different pretreatment processes. The results showed that both nutrient soil A and nutrient soil B could effectively increase the activities of urease, catalase and sucrase in the soil during spinach planting and it had a tendency to increase with the increase of nutrient soil dosage; at the same stage of spinach growth, the soil enzyme activity of nutrient soil A was higher than that of treatment group B and control group, and the highest urease value was 9.10 mg/g, appearing in the treatment group with the ratio of soil to nutrient soil of 5:1 (30 d). The application of the two kinds of nutrient soil could inhibit the activity of neutral phosphatase to some extent. Both nutrient soil A and nutrient soil B could significantly improve the biomass of spinach, especially when nutrient soil A applied with the ratio of soil to nutrient soil of 5:1, and then the fresh weight of spinach in the control group was 64.19 g, 132.32% higher than that in the control group. The application of nutrient soil A and B could affect soil enzyme activity and increase spinach biomass, and the overall effect of nutrient soil A was more obvious. The results of this study can provide theoretical basis and technical reference for effective resource utilization of MSW.
- domestic garbage,
- pyrohydrolysis,
- nutrient soil,
- soil fertility,
- enzymatic activity,
- biomass

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References

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