Environmental movement of indicator bacteria from soil amended with undigested sewage sludge

Ibiebele, Dagogo D.; Inyang, A.D.

doi:10.1016/0143-1471(86)90057-7

Cited by 13 publications

(4 citation statements)

References 5 publications

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“…De maneira geral, os maiores valores de redução microbiana nos solos foram verificados nas camadas mais permeáveis existentes na superfície dos lisímetros, mesmo dos impermeáveis, demonstrando a eficiência da parte mais superficial do solo na remoção dos microrganismos indicadores de contaminação fecal. Isso explica por que as águas residuárias infiltradas pouco mais de 1 metro no solo superficial, saturado ou não de água, oferecem maior segurança quanto à depuração do que uma percolação de várias dezenas de metros através do lençol freático, onde as condições aeróbias são difíceis (1,4,28).…”

Section: Discussionunclassified

Monitoramento sanitário de um sistema integrado de tratamento de águas residuárias da suinocultura

Barros¹,

Amaral²,

Lucas³

2003

Rev Panam Salud Publica

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Section: Discussionunclassified

Monitoramento sanitário de um sistema integrado de tratamento de águas residuárias da suinocultura

Barros¹,

Amaral²,

Lucas³

2003

Rev Panam Salud Publica

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“…Our process makes it possible to reduce the indicator bacterial population to a level compatible with the norms for sludge application to agricultural land. The concentration of coliforms attained (less than 10 3 CFU/100 mL) at the end of microbial leaching is less than or equal to concentrations normally found in agricultural soil [26]. Indicator bacteria were destroyed principally due to the production of acid.…”

Section: Destruction Of Indicator Bacteriamentioning

confidence: 98%

Simultaneous municipal sludge digestion and metal leaching

Tyagi

Blais

Boulanger

et al. 1993

Journal of Environmental Science and Health . Part A: Environme

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The presence of toxic metals in sewage sludge is one of the most important factors preventing the safe application of this sludge to agricultural land. A few chemical and microbiological methods have been developed for the removal of heavy metals from sewage sludges. A process which removes heavy metals and simultaneously digests the sludge is evidently advantageous. Therefore, the approach followed in this research was to verify if the process of microbial metal leaching developed in our laboratory could eventually replace the conventional process of sewage sludge digestion. The results obtained in batch culture with the sludges from different wastewater treatment plants showed that pH reduction from an initial value of six to eight to less than two in eight days time resulted in the elimination of indicator bacteria (total coliform, fecal coliform, and fecal streptococci) to a level below 10 3 CFU/100 mL. The process also achieved a substantial reduction of volatile suspended solids and odor. The pH reduction also resulted in solubilization of toxic metals (Cu 47-95%, Zn 65-98%, Ni 48-97%, Pb 7-63%, Cd 51-93%, Cr 16-58%).

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“…Parasite survival times of up to 15 years have been recorded in rare cases for Ascaris (Munger 1983). Pathogen movement in soil depends on soil moisture, texture, organic matter content, pH, permeability and temperature (Ibibele and Inyang 1986). In general, most pathogens are retained in the uppermost 15 cm of the soil.…”

Section: Hygienic Effectsmentioning

confidence: 99%

Sewage sludge fertilization of conifer forests in the Nordic countries and North America

2006

TemaNord

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In the society development towards increased ecological sustainability, decreasing landfill and increasing reuse of sewage sludge are of high priority. Within the European Union, a revision of the regulations for reuse of sewage sludge in the Sewage Sludge Directive 86/278/EEC is in progress. From a Nordic point of view, it has been considered that sludge fertilization of conifer forests might be an important option for sewage sludge nutrient reuse. Therefore, the PA-group under the Nordic Council of Ministers has commissioned the Swedish University of Agricultural Sciences, Department of Silviculture, Umeå, to make a compilation of existing research results from sewage sludge fertilization of conifer forests in the Nordic countries and in North America, for determination of the possibilities for the use of sludge as forest fertilizer, and as an input to the elaboration process of the new Sludge Directive.

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Environmental movement of indicator bacteria from soil amended with undigested sewage sludge

Cited by 13 publications

References 5 publications

Monitoramento sanitário de um sistema integrado de tratamento de águas residuárias da suinocultura

Monitoramento sanitário de um sistema integrado de tratamento de águas residuárias da suinocultura

Simultaneous municipal sludge digestion and metal leaching

Sewage sludge fertilization of conifer forests in the Nordic countries and North America

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