Characterisation and conditioning of Fenton sludges issued from wastewater treatment

Ramírez Zamora, R. M.; Orta de Velásquez, M. T.; Durán Moreno, A.; Malpica de la Torre, J.
November 2002
Water Science & Technology;2002, Vol. 46 Issue 10, p43
Characterisation tests were conducted to determine the feasibility of land application of the sludges produced in wastewater treatment by means of Fenton's Reagent. Physicochemical and microbiological parameters of Fenton sludges were compared to the values obtained for raw alum sludges. The Fenton sludges presented preferable characteristics such as the specific resistance to filtration (SRF), metals and pathogen content (fecal and total coliforms, helminth ova, and Salmonella sp.). The SRF of the Fenton sludges (1.55 x 1013 m/kg) was 24% less than the alum sludge value (1.92 x 1013 m/kg). The concentrations of fecal coliforms (0 MPN/g TS), Salmonella sp. (0 MPN/g TS), Helminth ova (22 HH/g TS) and metals correspond to the limits for biosolids of Class B for land application of the Mexican legislation. The Fenton reagent efficiently removes most of the pathogens, considered by the norms, by means of the combined action of the different stages that constitute this process. These results exhibit the Fenton reagent as a feasible treatment for generating sludges with characteristics of biosolids of Class B for land application. The preliminary results of conditioning tests show that Fenton sludges present better dewatering characteristics with regard to the alum sludge, for a dose of cationic polymer of 1 mg/g TS.


Related Articles

  • Interactions of pathogens and irritant chemicals in land-applied sewage sludges (biosolids). Lewis, David L.; Gattie, David K.; Novak, Marc E.; Sanchez, Susan; Pumphrey, Charles // BMC Public Health;2002, Vol. 2 Issue 1, p11 

    Background: Fertilisation of land with processed sewage sludges, which often contain low levels of pathogens, endotoxins, and trace amounts of industrial and household chemicals, has become common practice in Western Europe, the US, and Canada. Local governments, however, are increasingly...

  • Quality and time of biosolid compost when varying ratios and weight of substrates. Juárez-Robles, Beatriz; de la Rosa-Gómez, Isaías; del Consuelo Mañon-Salas, Maria; del Consuelo Hernández-Berrie, Maria; Vaca-Paulín, Rocío; la Fuente, Jorge Lugo-de // Revista Chapingo Serie Ciencias Forestales;sep-dic2017, Vol. 23 Issue 3, p401 

    Introduction: Biosolids generated in the treatment of wastewater are an environmental problem due to their inadequate handling and disposal. Objective: To know the effects when varying substrate ratios and pile weight on quality and time of biosolid compost. Materials and Methods: The mixture of...

  • Enteric Helminths Promote Salmonella Coinfection by Altering the Intestinal Metabolome. Reynolds, Lisa A.; Redpath, Stephen A.; Yurist-Doutsch, Sophie; Gill, Navkiran; Brown, Eric M.; van der Heijden, Joris; Brosschot, Tara P.; Han, Jun; Marshall, Natalie C.; Woodward, Sarah E.; Valdez, Yanet; Borchers, Christoph H.; Perona-Wright, Georgia; Finlay, B. Brett // Journal of Infectious Diseases;4/15/2017, Vol. 215 Issue 8, p1245 

    Intestinal helminth infections occur predominantly in regions where exposure to enteric bacterial pathogens is also common. Helminth infections inhibit host immunity against microbial pathogens, which has largely been attributed to the induction of regulatory or type 2 (Th2) immune responses....

  • Composting Used as a Low Cost Method for Pathogen Elimination in Sewage Sludge in Mérida, Mexico. Cabañas-Vargas, Dulce Diana; de los Ríos Ibarra, Emilio.; Mena-Salas, Juan. P.; Escalante-Réndiz, Diana Y.; Rojas-Herrera, Rafael // Sustainability (2071-1050);Jul2013, Vol. 5 Issue 7, p3150 

    Spreading sewage sludge from municipal wastewater (MWW) treatment on land is still a common practice in developing countries. However, it is well known that sewage sludge without special treatment contains various pollutants, which are (re)introduced into the environment by sludge landspreading...

  • SELECTION OF MEDIA FOR THE RECOVERY OF SALMONELLA AND SHIGELLA FROM TREATED DOMESTIC WASTEWATER. Pant, Anju; Mittal, Atul Kumar // Environmental Engineering & Management Journal (EEMJ);2006, Vol. 5 Issue 4, p863 

    Enumeration of pathogenic microorganisms has become an important issue in the water supply and sanitation (WATSAN) sector with the emerging concerns for the biological quality of treated sewage. Microbiological examinations are generally carried out as per the Standard Methods. However, there is...

  • Initial testing of electrospun nanofibre filters in water filtration applications. Bjorge, Decostere; Daels, Nele; De Vrieze, Sander; Dejans, Pascal; Van Camp, Tamara; Audenaert, Wim; Westbroek, Philippe; De Clerck, Karen; Boeckaert, Charlotte; van Hulle, Stijn W. H. // Water SA;Jan2010, Vol. 36 Issue 1, p151 

    The aim of this study was to evaluate the use of nanofibre microfiltration membranes, spun by an innovative electrospinning technique, in water filtration applications. As such, this study bridges the gap between developments in electrospinning techniques for the production of flat-sheet...

  • Concentrations of Cu, Fe, Mn, and Zn in tropical soils amended with sewage sludge and composted sewage sludge. Nogueirol, Roberta; Melo, Wanderley; Bertoncini, Edna; Alleoni, Luís // Environmental Monitoring & Assessment;Apr2013, Vol. 185 Issue 4, p2929 

    Sewage sludge may be used as an agricultural fertilizer, but the practice has been criticized because sludge may contain trace elements and pathogens. The aim of this study was to compare the effectiveness of total and pseudototal extractants of Cu, Fe, Mn, and Zn, and to compare the results...

  • REGROWTH OF FAECAL COLIFORMS AND SALMONELLAE IN STORED BIOSOLIDS AND SOIL AMENDED WITH BIOSOLIDS. Gibbs, R. A.; Hu, C. J.; Ho, G. E.; Unkovich, I. // Water Science & Technology;1997, Vol. 35 Issue 11/12, p269 

    Stabilised wastewater sludge (biosolids) has beneficial re-use properties but these are limited by the presence of human pathogens. In this study soil amendment with biosolids and storage of biosolids prior to re-use were examined as disposal and treatment options. In a soil amendment trial...

  • Anaerobic filter for polishing effluent of UASB reactor treating strong sewage at 23 c. Alrajoula, Mohammad; Halalsheh, Maha; Fayyad, Manar // Water Science & Technology;2009, Vol. 59 Issue 10, p1975 

    Anaerobic filter (AF) was used for polishing effluent of UASB reactor treating strong sewage at an average water temperature of 23°C. The UASB-AF system was operated with sludge discharge taking place only from the AF reactor. It was hypothesized that better removal of suspended COD (CODss)...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics