Research on the Characteristics of the Solid Waste and Sludge Composting of the Expressway Service Area

Abstract:

The solid waste and sludge from the expressway service area was mixed and composted. The changes of temperature, pH and total carbon, total nitrogen, humic matter, and the toxicity for the seed were investigated. The results indicated that: the temperature above 55°C was more than 6 days, which could meet the harmless standard. The pH value quickly increased and then decreased, stabilized in the neutral range. The total carbon decreased obviously and the nitrogen also decreased significantly high to 33%in the first 12 days, which indicated the activity of the microorganism was strong and the degradation of organic matter was quickly, the ammonia was produced much, and the high temperature phase made the loss of nitrogen. The increases of fulvic acid and humic acid showed the conversion of organic matters to humus. Composting decreased the matters inhibiting seed germination and weakened the toxicity for the plant, and the sample reached maturity through composting. This study is a beneficial way of ecological application in expressway service solid waste treatment.

• Periodical: Advanced Materials Research (Volumes 726-731)
• Pages: 2761-2766
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.726-731.2761
• Online since: August 2013
• Authors: Jian Xun Zhao, Juan Qiao
• Keywords: Composting, Expressway Service Area, Organic, Sludge, Solid Waste

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