Ceramsite obtained from water and wastewater sludge and its characteristics affected by (Fe2O3+CaO+MgO)/(SiO2+Al2O3)

Preparation of ceramic filler from reusing sewage sludge and application in biological aerated filter for soy protein secondary wastewater treatment

“…As a kind of lightweight aggregate, ceramics have been widely used in construction industry (e.g. as cement mortars, concrete mixtures, bricks, fine aggregate for mortars and ceramic materials) [6,7], and also in other fields such as lightweight geotechnical fill, insulation products, soil engineering, hydro-culture, drainage, roof gardens and filters [8]. In recent years, many researchers have paid attention to ceramic sintering from sewage sludge, in order to decrease consumption of natural resources and immobilize hazardous waste [9].…”

Preparation and mechanism of ultra-lightweight ceramics produced from sewage sludge

“…In addition, sintering treatment was a complex physicalchemical phenomenon, and many researchers investigated bloating mechanism with chemical components of raw materials [16,17,21,22], but few of them explained the bloating phenomenon and the preheating mechanism blending physical forces with chemical compositions. In the present study, the optimum conditions for preparing ULWC from sludge, the preheating mechanism and bloating mechanism was investigated.…”

A grit separation module for inorganic matter removal from activated sludge: investigation on characteristics of split sludge from the module

“…Ceramsite mainly consists of inorganic compounds such as SiO 2 , Al 2 O 3 , CaO, Fe 2 O 3 , P 2 O 5 , NaO, MgO, and K 2 O. [32] The underflow sludge from the separation module tested in this study is suitable as a raw material for ceramsite production, because it contains several inorganic ceramsite components. Using the underflow sludge as a raw material for ceramsite production would simplify the sludge treatment and disposal procedure because of its excellent settling and dewatering properties.…”