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Incineration for the disposal of sludge is drawing increased attention, and SO 2 and NOx are the main secondary pollutants produced during the incineration process. Process control during incineration is the most reasonable method to reduce the production of secondary gaseous pollutants. In this study, batch combustion tests of sludge were carried out in CO 2 /O 2 and N ...
This study investigated the odor compounds from different areas in a landfill site, which included the municipal solid waste (MSW)-related area, the leachate-related area and the sludge-related area. Nine sampling points were placed and 35 types of odorous substances were measured and quantified from these grabbed samples. The results showed that the main odorous substances emitted from landfill site...
Ultrasonic pretreatment of excess sludge can improve its aerobic digestibility, leading to enhanced sludge reduction. In order to understand the mechanisms of this improvement, sludge flocs were divided into four layers, i.e. (1) slime, (2) loosely bound extracellular polymeric substances (LB-EPS), (3) tightly bound EPS (TB-EPS) and (4) pellet. Extracellular proteins, polysaccharides and five types...
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