Hydrographically Bolivian Poopó Lake is located in the basin of Desaguadero River and it has over a dozen main tributary rivers and other smaller rivers with lower flow. The mine water discharge from the abandoned and current mining activities polluted these rivers by carrying heavy metals, dissolved and suspended solids which in turn polluted the Poopó Lake which is considered as an important ...

The main objective is to examine how the viscosity values change in order solve problems frequently encountered transmission lines this study. Sludge samples from chemical and biological treatment process were taken two different stages of nearby industrial zone wastewater plant (IZWWTP). Physical, rheological properties sludge investigated seasonal periods (October February). pH, temperature, ...

Conventional landfills are built to dispose of the increasing amount of municipal solid waste (MSW) generated each year. A relatively new type of landfill, called a bioreactor landfill, is designed to optimize the biodegradation of the contained waste to stabilized products. Landfills with stabilized waste pose little threat to the environment from ozone depleting gases and groundwater contamin...

Pasture runoff can contribute to elevated concentrations of nutrients, solids, and bacteria in downstream waters. The objective of this study was to determine the effects of vegetative filter strip (VFS) length on concentrations and transport of nitrogen, phosphorus, solids and fecal coliform in runoff from plots treated with cattle manure. Three plots with dimensions of 2.4 × 30.5 m were used....

Discrimination of the chlorophyll signal from those of suspended sediments and the water itself has proven to be a difficult problem in optical remote sensing of algal biomass. Our study uses numerical differentiation of high resolution spectral data collected at close range over experimental tanks to address this problem. Results indicate that pure water effects can be reduced by a first-order...

In this study, the impact of thermal hydrolysis pretreatment (THP) on mono- and co-digestion thickened waste activated sludge (TWAS) food (FW) was carried out at temperatures 150, 170, 190, 210 °C volumetric ratios 90:10, 70:30, 50:50 in batch anaerobic tests. THP enhanced solubilization, reduced volatile suspended solids (VSS) particle size TWAS as temperature increased showing optimal improve...

Integrated fixed film activated sludge (IFAS) is an increasingly popular modification of conventional activated sludge, consisting of the addition of solid media to bioreactors to create hybrid attached/suspended growth systems. While the benefits of this technology for improvement of nitrification and other functions are well-demonstrated, little is known about its effects on biomass settleabi...

The paper describes the design of a finite state automaton which forms the kernel of an Intelligent Decision Support System that has been implemented and integrated into the existing supervisory control and data acquisition system at a medium scale municipal Wastewater Treatment Plant. The system provides real-time support and advice to the operators and the manager of the plant for a wide rang...

Background: Considering the toxic effects of heavy metals and microbial pathogens in industrial wastewaters, it is necessary to treat metal and microbial contaminated wastewater prior to disposal in the environment. The purpose of this study is to assess the removal of heavy metals pollution and microbial contamination from a mixture of municipal and industrial wastewater using membrane bioreac...