More than 1,000 boxes of sewage sludge are stockpiled at this base camp. It was composted during the beginning of a pilot study in 2004. Armies around the globe have always had to deal with the problem of solid waste. Today, a large percentage of solid waste is packaging materials (cardboard, paper, and plastic), in addition to waste food and sewage sludge. While much of the solid waste generat...

This work reports some reflections about the European and Italian regulation on sewage sludge. In Europe, the progressive augment of the production of sludge from municipal wastewater treatment plants has recently led to a growing attention about management of this type of solid matrix. European Directives and Italian guidelines stimulated reuse of sewage sludge on agricultural soils or in comp...

key dissimilarities between thermophilic and mesophilic anaerobic digestion of waste activated sludge (was) were experimentally studied in this research. typical was with total solids (ts) concentrations of 30 and 60 g/l were digested anaerobically in a batch digester at mesophilic and thermophilic temperatures. solids reduction, total cod changes, the production of different volatile fatty aci...

サステイナブルな下水処理系の構築に向けて、産業排水等に含まれる有機成分を基質とし、余剰汚泥をバイオ触媒として用いて、化成品等の有価物を生産する戦略が提案できる。すなわち、下水処理場をバイオリファイナリーに進化させる構想である。この構想を実現するうえで核となる技術として、余剰汚泥によるバイオプラスチックPHA（ポリヒドロキシアルカン酸）の生産に関しての技術開発を進めている。下水処理場由来の余剰汚泥は特に馴致せずとも、産業排水等に含まれる揮発性脂肪酸や糖類などの比較的広範な基質からPHAをある程度生産する能力を有していることが示されている。また、ADD法（aerobic dynamic discharge process）により、余剰汚泥中のPHA蓄積微生物を集積することで、2日間程度の極めて短期間にPHA生産効率を飛躍的に向上し得ることできる。これらの研究開発の成果を活用することで、下...

H. F. Wang, J. J. Lu, K. F. Chen, H. L. Duan, Wuhan Textile University, Wuhan, China A new method to treat four solid wastes of sodium silicate used sands, dewatered municipal sludge, clay sands sludge and waste polyethylene, was discussed. About wt/ 50 % sodium silicate used sands and wt/ 50 % dewatered sludge were mixed, and then cured by microwave with a certain thickness film of clay sands ...

the effluent quality of a sewage treatment plant using activated sludge process and finally secondary treatment depends on the flocculation efficiency and settling of the flocs. the survey of various treatment processes in water and wastewater treatment shows that temperature and ph are the important factors affecting efficiency of flocculation and settling properties. this study was performed ...