Water Filtration Articles

1175 Results found
  • Category: Water & Wastewater ×

  • Subcategory: Water Filtration ×

Turning metal wires from pulp bales into profit with TANA Shark

by Tana Oy  (Feb. 16, 2015)

Metal wires from paper pulp bales are high in value but very hard to shred and clean for selling purposes. Usually the metal wires are stuck with plastics and some remains of the pulping process. This particular type of waste is almost impossible to separate, says a landfill operator in France. Normally the only possibility to handle this type ...

Comparing the microbial risks associated with household drinking water supplies used in peri-urban communities of Phnom Penh, Cambodia

by IWA Publishing  (Feb. 27, 2015)

Most Cambodians lack access to a safe source of drinking water. Piped distribution systems are typically limited to major urban centers in Cambodia, and the remaining population relies on a variety of surface, rain, and groundwater sources. This study examines the household water supplies available to Phnom Penh's resettled peri-urban ...

Application of risk-based assessment and management to riverbank filtration sites in India

by IWA Publishing  (Feb. 27, 2015)

This is the first reported study of a riverbank filtration (RBF) scheme to be assessed following the Australian Guidelines for Managed Aquifer Recharge. A comprehensive staged approach to assess the risks from 12 hazards to human health and the environment has been undertaken. Highest risks from untreated ground and Ganga River water were ...

Multiparametric comparison of chromogenic-based culture methods used to assess the microbiological quality of drinking water and the mFC method combined with a molecular confirmation procedure

by IWA Publishing  (Feb. 27, 2015)

MI agar and Colilert®, as well as mFC agar combined with an Escherichia coli-specific molecular assay (mFC + E. coli rtPCR), were compared in terms of their sensitivity, ease of use, time to result and affordability. The three methods yielded a positive E. coli signal for 11.5, 10.8, and 11.5% of the 968 well water samples ...

Simulation and verification of hydraulic properties and organic matter degradation in sand filters for greywater treatment

by IWA Publishing  (Feb. 26, 2015)

To evaluate the treatment performance of vertical flow sand filters, the HYDRUS wetland module was used to simulate treatment in an experimental set-up. The laboratory filters were intermittently dosed with artificial greywater at a hydraulic loading rate of 0.032 m3 m−2 day−1 and an organic loading rate of 0.014 kg BOD5 m−2 ...

Reduction of natural organic matter by an electrolytic process, conventional coagulation and direct descending filtration in a pilot-scale water treatment system

by IWA Publishing  (Feb. 23, 2015)

Recently, alternative water treatment systems have been implemented due to the eutrophication of reservoirs, in which high concentrations of organic matter prevent the use of conventional water treatment methods. This paper presents a study on the electrolytic process for water treatment using an alternating current. A reactor with iron and ...

Comparing the performance of biosand filters operated with multiday residence periods

by IWA Publishing  (Feb. 23, 2015)

Biosand filter (BSF) users are instructed to operate their filters with residence times of 1–48 hours. However, studies to date have only tested residence periods of 6–36 hours, with no studies extending to 48 hours, or investigating whether BSF performance decreases beyond 48 hours. The goal of this study was to compare ...

Utilizing structural equation modeling to correlate biosand filter performance and occurrence of diarrhea in the village of Enseado do Aritapera in Para, Brazil

by IWA Publishing  (Feb. 4, 2015)

Previously, our earlier work demonstrated the use of structural equation modeling to evaluate the effectiveness of point-of-use biosand filters (BSF) to reduce the occurrence of diarrhea in rural Guatemala. While prior research in laboratory and field locations has documented the effectiveness of BSF to remove agents of diarrhea, experience in ...

Iron and manganese removal from groundwater by filtration through a chalcedonite bed

by IWA Publishing  (Jan. 23, 2015)

The aim of this research was to determine the effectiveness of iron and manganese removal from groundwater using chalcedonite sand as a filter bed in rapid filtration. The experiment was conducted at a pilot plant. At the first stage of research, chalcedonite and silica sand were compared. The ripening time for manganese removal of chalcedonite ...

Elimination of pharmaceuticals from the wastewater of a pharmaceutical plant

by EnviroChemie GmbH Technology for Water  (Jan. 13, 2015)

Efficient decomposition of pharmaceuticals through ozonisation Roche AG had commissioned the company Envi-roChemie to develop a new procedure for a new production facility in Mexico, which prevents the undesired release of ecotoxicologically contaminating drugs into the environment and eliminates pharmaceuticals in the wastewater directly at the ...

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