Alum salts are commonly used in the water industry to promote coagulation in the production
of clean drinking water, which results in the generation and accumulation of 'waste'by …

Virtually all known drinking water processing systems generate an enormous amount of
residual sludge, and what to do with this rapidly increasing “waste” stream in an economic …

Abstract Ammonium (NH4+) oxidation is crucial for nitrogen (N) removal, contributing to
regional and global N cycles, but is regarded as limited to a few biological pathways. A …

The potential of aluminum-based water treatment residuals (WTR) discharged from water
treatment plants was evaluated as a coagulant for color removal from a disperse dye …

Alum sludge (AS) is an underrated by-product waste resulted from treating raw water
through conventional water treatment plants. Water is attained from various reservoirs such …

Dosage of iron salt is the most commonly used method for sulfide control in sewer networks
but incurs high chemical costs. In this study, we experimentally investigate the feasibility of …

Several industrial wastes including biomass, fly ashes, red mud, mill scales, water treatment
residues, have significant concentrations of metal oxides: Fe 2 O 3, Al 2 O 3, TiO 2, SiO 2 etc …

Iron in anaerobic groundwater is commonly removed by oxidation followed by sand filtration.
This produces large volumes of iron (III)(hydr) oxide sludge with little value. Our research …

Chemical and physical characterization methods were used to analyze ferric, alum, and lime
water treatment residual solids (WTRSs) in order to describe why phosphate or arsenate …

Coagulant recovery from waterworks sludge for re-use is a key option towards the reduction
of chemical usage in the water industry. Whilst this concept is not novel, process economics …