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Effect of operating conditions on the chemical phosphorus removal using ferric chloride by evaluating orthophosphate precipitation and sedimentation of formed precipitates in batch and continuous systems
(Elsevier Science, 2012-10-15)
Chemical phosphate removal by Fe(III) involves the precipitation of ferric phosphate and subsequent sedimentation of Fe-P particles. Physical-chemical factors that affect the phosphorus (P) precipitation are well known; ...
Study of matrix effects and spectral interferences in the determination of lead in sediments, sludges and soils by SR-ETAAS using slurry sampling
(Elsevier Science, 2010-07)
An interference-free, fast, and simple method is proposed for Pb determination in environmental solid samples combining slurry sampling and electrothermal atomic absorption spectrometry. Samples were ground to an adequate ...
Determination of lead in sediments and sewage sludge by on-line hydride-generation axial-view inductively-coupled plasma optical-emission spectrometry using slurry sampling
(2007)
Among the “traditional” hydride-forming elements, lead is probably the most difficult, and its determination in this form has rarely been reported in the literature. In this paper a simple and rapid method, axial-view ...
Dinâmica de Sedimentação de Lodo em Lagoas de Estabilização
(Universidade Federal do Rio Grande do NorteBRUFRNPrograma de Pós-Graduação em Engenharia QuímicaPesquisa e Desenvolvimento de Tecnologias Regionais, 2007-06-01)
Stabilization ponds are an effective sewage treatment alternative for the climatic conditions prevailing in Brazil. In the present work, a primary facultative pond was studied, in the city of Natal, Rio Grande do Norte, ...
BIOTECHNOLOGICAL PROCESS FOR THE TREATMENT OF-CONTAINING HYDROXIDE SLUDGE RESULTING FROM POTABLE WATER TREATMENT BACTERIA
The invention discloses a biotechnological process for the treatment of hydroxide sludge containing As produced in potable water production processes which use FeCl3 as a coagulant, through the action of sulfate reducing ...
Adensamento de lodo de estação de tratamento de água: comparação entre sedimentação e flotação
(Universidade Federal de Santa MariaBREngenharia CivilUFSMPrograma de Pós-Graduação em Engenharia Civil, 2016-03-04)
In water treatment plants (WTP) the solid waste generation is considered very high. The sludge from WTP have their own characteristics, which depend mainly on the captured water quality, the chemicals used in the treatment ...
Lodo em lagoas de polimento: acúmulo e implicações no comportamento hidrodinâmico e no desempenho do sistema
(Universidade Federal de Minas GeraisUFMG, 2014-02-25)
Polishing ponds are a technology with great potential for application in developing countries because they are units that combine aerobic treatment to an efficient anaerobic treatment (UASB). This combination enables the ...
Characterization and degradation process of sludge profiles inside a facultative pond (Patagonia, Argentina)
(IWA Publishing, 2011-11)
To investigate the characteristics and degradation process in sludge profile, three sampling sessions were made in three different places inside the primary facultative pond of Puerto Madryn city, which was located in a ...