The aim of the present research is studying the effect of potassium permanganate addition on the pre-oxidation and coagulation of the surface water. River Nile and El Rayah El Tawfeky of Benha city, Egypt were the surface water supply used in this research. The results showed that El Rayah El Tawfeky raw water had higher turbidity concentration and humic acids absorbance (8.5 NTU and 0.024, res...

Some agricultural effluents are unsuitable for discharge into standard sewage-treatment plants: their pretreatment is necessary to avoid clogging of the filtering devices by colloidal matter. The colloidal stability of the effluents is mainly due to mutual repulsive forces that keep charged particles in suspension. Pretreatment processes are based on two separate stages: (a) neutralization of t...

Polymeric nanofiber membranes of polyvinyl chloride (PVC) blended with polyvinylpyrrolidone (PVP) were fabricated using an electrospinning process at different conditions and used for the filtration of three different liquid suspensions to determine the efficiency of the filter membranes. The three liquid suspensions included lake water, abrasive particles from a water jet cutter, and suspended...

The use of novel flocculants in combination with a sequencing batch reactor (SBR) for the treatment landfill leachate and municipal wastewater has been shown to be an effective method reducing polluted effluents. Co-treatment mixture was performed at 5%, 10%, 15% 20% SBR effluent treated by coagulation–flocculation. 6 d hydraulic retention time (HRT) 30 solids (SRT) removed 58 70% COD, 86 93% a...

To obtain timely and continuous water-quality information, the U.S. Geological Survey, in cooperation with State and other Federal agencies, has been using an innovative real-time monitoring approach for several Kansas streams. Continuously recorded data and data from periodic collection of water-quality samples are being used to develop surrogate relations between turbidity and constituents of...

This paper examines potential uses of naturally growing aquatic plants for wastewater purification. These plants enhance the removal of pollutants by consuming part of them in the form of plant nutrients. This applies to urban and agricultural wastewater, in particular, where treatment units of different sizes can be applied at the pollution source. The effectiveness of wastewater purification ...