Spent Filter Backwash Water Treatment by Coagulation Followed by Ultrafiltration

Abstract

AbstractWater is required for sustaining life. It is also used in anthropogenic activities such as agriculture, washing, and industries. Emerging technologies to decontaminate wastewater spent filter backwash water (SFBW) and waste sludge have been widely investigated in wastewater treatment plants. Most of the industries produce spent filter backwash water (SFBW). SFBW utilization is important due to the feasible heavy metals recycle, microorganisms and predecessor for disinfection outcomes. Modernization in coagulation and membrane techniques, particularly in Ultrafiltration and micro- treatment, provides an appropriate method for SFBW to assure the water quality needed for reuse. The main advantages of Ultrafiltration (UF) are less land consumption and reliable water quality. It can remove microorganisms from the water completely, improving the biological quality of water. The suspended particles, viruses and colloidal substances in water are purified using this method. As the primary purification technology of urban drinking water, Ultrafiltration is an alternative to recycling industrial wastewater and sewage drains. Compared with the conventional water treatment process, the EC and UF process has higher efficiency, better effects of treatment and low energy consumption. It is important to further investigate ultrafiltration technology to improve the quality of water, protect water resources, and balance the ecological environment.KeywordsSpent filter backwash water treatmentCoagulationUltrafiltrationChemical disinfectionWater reuse