Fate of faecal pathogen indicators during faecal sludge composting with different bulking agents in tropical climate

This paper reports the results of experiments on the static pile composting process undertaken in different conditions. The experiments have revealed the following:–In order to compost dewatered sludge with polymer without any bulking agents, we used recycled compost to adjust the moisture content of dewatered sludge.When the moisture content of feed mixture, which was dewatered sludges and recycled composts, was lowered to approximately 50%, the raw sludge could be composted by either natural ventilation or intermittent aeration.–When the BOD of feed mixture was lower than 50 g/kg-DS, the fermentation temperature did not reach 60°C and the moisture content of the mixture was not lowered during composting period.–The required composting time was approximately 50 days for natural ventilation (at an average temperature of 10°C or 24°C) and approximately 35 days for intermittent aeration (at an average temperature of 10°C to 24°C), when the moisture content and the BOD of finished compost was 40% or less and 30 g/kg-DS or less, respectively.–There was a highly positive correlation between the amount of water evaporated and the amount of BOD removed. This result suggested that the amount of water evaporation could be deduced from the amount of BOD removed.

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Influence of different bulking agents on the disappearance of polycyclic aromatic hydrocarbons (PAHs) during sewage sludge composting

Water Air & Soil Pollution ◽

10.1007/s11270-006-9105-2 ◽

2006 ◽

Vol 175 (1-4) ◽

pp. 15-32 ◽

Cited By ~ 23

Author(s):

Patryk Oleszczuk

Keyword(s):

Polycyclic Aromatic Hydrocarbons ◽

Sewage Sludge ◽

Aromatic Hydrocarbons ◽

Bulking Agents ◽

Polycyclic Aromatic ◽

Sludge Composting

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Influence of bulking agents on speciation of heavy metals during sewage sludge composting

2011 Second International Conference on Mechanic Automation and Control Engineering ◽

10.1109/mace.2011.5988767 ◽

2011 ◽

Author(s):

Chen Liu ◽

Ya-tong Xu

Keyword(s):

Heavy Metals ◽

Sewage Sludge ◽

Bulking Agents ◽

Sludge Composting

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Research on Sewage Sludge Composting Experimental

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1030-1032.313 ◽

2014 ◽

Vol 1030-1032 ◽

pp. 313-316 ◽

Cited By ~ 1

Author(s):

Qin Hua Sun ◽

Jian Kun Zhang ◽

Hui Fang Zhang

Keyword(s):

Sewage Sludge ◽

Organic Fertilizer ◽

Water Soluble ◽

Bulking Agents ◽

Aerobic Composting ◽

Urban Sewage ◽

Water Soluble Organic Carbon ◽

Soluble Organic Carbon ◽

Urban Sewage Sludge ◽

Sludge Composting

Sludge composting is an effective method of urban sewage sludge by composting,It can make the sludge into the organic fertilizer for plant growth. In this experiment, straw as bulking agents, through aerobic composting experiment, analysis the changes of temperature, moisture, pH, water soluble organic carbon and germination index during the composting process,The results showed: through aerobic composting can achieve for urban sludge harmless, stabilization and reduction.

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