title: Chemical sludge conditioning in combination with different conventional and alternative dewatering devices: chamber filter press, decanter and Bucher press.
abstract: The Kemicond process for sludge conditioning consists of chemical treatment with sulphuric acid and hydrogen peroxide at a pH-value of approximately 4 followed by a dewatering unit. It is shown that chemical treatment can improve the dewaterability of ferruginous digested sludge. It is concluded that the Fenton process as well as the oxidation of organics and the formation of iron hydroxo complexes are important reaction mechanisms. Furthermore, the organic matter changes through the acidic oxidative process. With the improvement in dewaterability, it is possible to achieve an increase in TS concentration, which affects a reduction of the sludge volume. Cost savings for sludge disposal can amortize the additional investment and operational costs for chemical treatment.
authors.affiliation: Dr. Born-Dr. Ermel GmbH, Achim, Germany. cs@born-ermel.de
authors.forename: Christian
authors.initials: C
authors.lastname: Schaum
authors.forename: Peter
authors.initials: P
authors.lastname: Cornel
authors.forename: Pedro
authors.initials: P
authors.lastname: Faria
authors.forename: Michael
authors.initials: M
authors.lastname: Recktenwald
authors.forename: Olof
authors.initials: O
authors.lastname: Norrlöw
mesh_terms: D003365:Costs and Cost Analysis; D005374:Filtration / Q000191:economics / Q000295:instrumentation / Q000379:methods*; D006861:Hydrogen Peroxide / Q000737:chemistry; D007501:Iron / Q000737:chemistry; D012722:Sewage / Q000737:chemistry*; D014865:Waste Disposal, Fluid / Q000191:economics / Q000295:instrumentation* / Q000379:methods*; D014867:Water / Q000737:chemistry*
chemical_list: C045076:Fenton's reagent; D012722:Sewage; D014867:Water; D006861:Hydrogen Peroxide; D007501:Iron