Water scarcity is an increasing world-wide concern due to the rapid growth of population along with industrialization and urbanization. Membrane ultrafiltration represents a promising and sustainable technology for handling this problem through water reuse. However, fouling is still a significant drawback that limits the expansion of membrane filtration use. Recent studies have shown that ultrasound… Continue reading Sonochemical control of fouling formation in membrane ultrafiltration of wastewater: Effect of ultrasonic frequency
It is well known that chlorine and its compounds, traditionally utilized for water and wastewater disinfection, react with some organic matter to form undesirable by-products, hazardous to human health, known as Disinfection By-Products (DBPs). In many countries very stringent limits for chlorination by-products such as trihalomethanes were set for wastewater reuse. Accordingly, the use of… Continue reading Water and wastewater disinfection by ultrasound irradiation-a critical review
One of the most popular means for removal of natural organic matter found in small concentration is by adsorption. Recent studies have found that ultrasound enhances adsorption properties of different adsorbents for many contaminants in aqueous solution. This work describes the results of investigation carried out to examine the adsorption process of phenol, as an… Continue reading Influence of ultrasound on phenol removal by adsorption on granular activated carbon
Activated sludge processes are key technologies in wastewater treatment. These biological processes produce huge amounts of waste activated sludge (WAS) or otherwise biosolids. Mechanical, thermal, and/or chemical WAS conditioning techniques have been proposed to reduce the sludge burden. Among the WAS treatments, the pre-treatment with ultrasound (US) is one of the most innovative processes. In… Continue reading Effect of sonolysis on waste activated sludge solubilisation and anaerobic biodegradability
Reclamation and reuse of wastewater is one of the most effective ways to alleviate water resource scarcity. In many countries very stringent limit for chlorination by-products such as trihalomethanes has been set for wastewater reuse. Accordingly, the use of alternative oxidation/disinfection systems should be evaluated as possible alternative to chlorine. Recently ultrasound (US) was found… Continue reading Wastewater disinfection by combination of ultrasound and ultraviolet irradiation
