Kinetics of organic matter removal and humification progress during sewage sludge composting

2016 ◽  
Vol 49 ◽  
pp. 196-203 ◽  
Author(s):  
Dorota Kulikowska
Keyword(s):  
Organic Matter ◽  
Sewage Sludge ◽  
Organic Matter Removal ◽  
Kinetics Of ◽  
Sludge Composting

The change of organic matter in sewage sludge composting and its influence on the adsorption of pentachlorophenol (PCP)

2014 ◽  
Vol 22 (7) ◽  
pp. 4977-4984 ◽  
Author(s):  
Lou Liping ◽  
Liu Defu ◽  
Chen Huanyu ◽  
Chen Fang ◽  
He Yunfeng ◽  
...  
Keyword(s):  
Organic Matter ◽  
Sewage Sludge ◽  
Sludge Composting

Effects of the Amount of Additives on Sludge Composting in Northern Cold Regions

2014 ◽  
Vol 522-524 ◽  
pp. 821-825
Author(s):  
Ke Zhao ◽  
Yu Zhang ◽  
Yu Yan ◽  
Bei Wang
Keyword(s):  
Organic Matter ◽  
Sewage Sludge ◽  
Total Phosphorus ◽  
Phosphorus Content ◽  
Organic Fertilizer ◽  
Volume Ratio ◽  
Cold Climates ◽  
Forced Aeration ◽  
Aerobic Sludge ◽  
Sludge Composting

Under laboratory conditions, by determining the appropriate proportion added to sludge, composting experiments were carried out to achieve the best results in cold climates. Aerobic sludge composting reactors adopted positive forced aeration for static pile. Additives and sludge were mixed at the volume ratios of 2:1 and 3:1 respectively. By investigating the change laws of temperature, moisture, organic matter, pH, total phosphorus and ammonium, the maturity of sludge composting was evaluated. During the composting at the volume ratio of 2:1, the temperature could rise quickly, the moisture and organic matter declined apparently, and the total phosphorus content increased significantly. Besides, the rest of the indicators all met the maturity standards. Under the condition, sewage sludge could be converted to organic fertilizer in favor of the growth of crops through composting process.

Sewage sludge composting: Influence of initial mixtures on organic matter evolution and N availability in the final composts

2010 ◽  
Vol 30 (10) ◽  
pp. 1922-1930 ◽  
Author(s):  
Jérémy Doublet ◽  
Cédric Francou ◽  
Maelenn Poitrenaud ◽  
Sabine Houot
Keyword(s):  
Organic Matter ◽  
Sewage Sludge ◽  
N Availability ◽  
Sludge Composting

Dynamic of lead speciation in sewage sludge composting

2004 ◽  
Vol 50 (9) ◽  
pp. 75-82 ◽  
Author(s):  
G.D. Zheng ◽  
T.B. Chen ◽  
D. Gao ◽  
W. Luo
Keyword(s):  
Heavy Metal ◽  
Organic Matter ◽  
Sewage Sludge ◽  
Extraction Method ◽  
Large Scale ◽  
Chemical Speciation ◽  
Lead Speciation ◽  
Sequential Extraction Method ◽  
Mn Oxides ◽  
Sludge Composting

A large-scale sewage sludge composting experiment was conducted to develop an understanding of changes that occur to Pb chemical speciation, distribution and bio-availability during the course of composting. The four-stage Tessier sequential extraction method was employed to investigate the dynamics of heavy metal Pb speciation (exchangeable, bound to carbonates, bound to Fe-Mn oxides, bound to organic matter and sulphides, residual) during the course of sewage sludge composting. The concentrations of the total Pb and the five Pb fractions concentrations were increased during the whole stage of compost. However, the percentages of Pb distribution with respect to total Pb were changed in the following manner: exchangeable, bound to Fe-Mn oxides and bound to carbonates Pb with respect to total Pb were increased, while the percentages of bound to organic matter and sulphides, and residual Pb with respect to total Pb were decreased during composting. The data showed that the quantity of Pb in the less toxic portion, such as consisting of organic matter and sulphides bound and residual Pb, was increased, and that the contamination and bio-availability of heavy metal Pb in sewage sludge was reduced during the composting process.

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