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Humic Mechanism and Resource of Municipal Sludge Based on Aerobic Digestion

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DOI: 10.23977/erej.2022.060112 | Downloads: 10 | Views: 869

Author(s)

Ivonilde do Céu Neves Lima Oliveira 1

Affiliation(s)

1 College of Ecological Environment, Hainan Tropical Ocean University, Sanya 572022, China

Corresponding Author

Ivonilde do Céu Neves Lima Oliveira

ABSTRACT

At present, the reasonable disposal and control of municipal sludge in China has just started, and the treatment method is still relatively backward, which is more likely to cause secondary pollution. Therefore, the use of sludge batch aerobic humification treatment is a relatively advanced technology worth carrying out Promotion. It is also very urgent to recycle municipal sludge. This article aims to study the working mechanism of municipal sludge humification based on aerobic digestion and its resource research. This article uses a variety of survey methods to investigate and compare the sludge treatment methods of a city for 5 consecutive years and compare their resource utilization rates; the frequency and current use of aerobic humification sludge treatment methods at 3 major municipal sludge treatment plants in a province Existing difficulties; literature analysis summarizes the mechanism of aerobic digestion of municipal sludge humification method; resource conversion of aerobic humification sludge treatment method of three major municipal sludge treatment plants in a province is obtained in four aspects in conclusion. The results show that the use ratio of aerobic humic sludge treatment is increasing year by year, and its use ratio is about 30%, and the resource conversion rate is about 60%, which can reduce the proportion of harmful substances to about 3%. The main occurrence conditions are the oxygen index is higher than 50%, the temperature is 100-70 degrees, the C / N ratio is 1: 3, and the water content is greater than 75%. The current difficulty is mainly the difficulty in determining the degree of fermentation maturity. Both. The results fully prove that people are more and more aware of the importance of aerobic humus in the municipal sludge treatment process. Among them, aerobic humus is conducive to improving resource utilization and reducing emissions of harmful substances. The proportion of use is not high, and there are mainly technical problems and dirt classification problems.

KEYWORDS

Aerobic Digestion, Municipal Sludge Treatment, Sludge Humification, Sludge Recycling

CITE THIS PAPER

Ivonilde do Céu Neves Lima Oliveira, Humic Mechanism and Resource of Municipal Sludge Based on Aerobic Digestion. Environment, Resource and Ecology Journal (2022) Vol. 6: 66-79. DOI: http://dx.doi.org/10.23977/erej.2022.060112.

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