Coagulation and flocculation behavior of fines in foid-bearing rock processing plant (FRPP) wastewater at alkaline environment

Enhanced Implications on Turbidity Removal from Natural Stone Wastewater by Binary Mixtures

“…On the other hand, at the isoelectric point, pH iep , the electrical double layer (EDL) disappears and agglomeration occurs naturally. ,, Moreover, destabilization of the dispersed mineral particles makes the mineral particles get close enough to each other and come together with the effect of London–van der Waals gravitational forces so that their masses increase. This results in an increasing settling rate of the mineral particles and can be promoted using coagulants and natural/synthetic flocculants. ,− …”

“…In these experimental studies, including our previous study, it was concluded that turbidity removal efficiency varied mostly with pH, charge, and charge density of the flocculant, particle type/size in the effluent, natural stone type, the solid ratio of the slurries, etc. It was also concluded that the sign and the magnitudes of the charges of solid particles play a crucial role in the efficiency of the coagulation/flocculation processes. ,,,− As in various wastewater processes in different industrial applications, an efficient and fast turbidity removal process from natural stone wastewater plays a critical role in allowing production to continue without interruption and minimizing the use of freshwater. From this point of view, this study aimed at obtaining accelerated and efficient turbidity removal from complex natural stone sizing/processing plant wastewater containing many different mineral fines such as silicates, iron-bearing minerals, etc.…”

Preparation and performance evaluation of hybrid polymer flocculants (PAC‐PAM), and comparison experiments with other flocculants

“…4,5 In addition, in recent decades, with the rapid development of world industry, the disposal of various industrial wastewater has brought greater pressure to the use of freshwater resources, [6][7][8] and the treatment of sewage is the focus. [9][10][11] According to the principle, the existing sewage treatment methods can be divided into the physical method, chemical method and biodegradation method. [12][13][14] Among them, the physical method is mainly for suspended solids in sewage, the chemical method is mainly for colloidal particles and soluble substances in sewage, and the biodegradation method mainly relies on the degradation of microorganisms to purify sewage.…”

“…Relevant reports point out that the water consumption of the world's population is increasing at a rate of 1% every year, and half of the world's population lives in water shortage areas 4,5 . In addition, in recent decades, with the rapid development of world industry, the disposal of various industrial wastewater has brought greater pressure to the use of freshwater resources, 6–8 and the treatment of sewage is the focus 9–11 . According to the principle, the existing sewage treatment methods can be divided into the physical method, chemical method and biodegradation method 12–14 .…”

Improvement Effect of FeSO4·7H2O on Flotation Separation of Scheelite from Fluorite

“…The depressant mixture is a good choice for this specific goal. To enhance the separation efficiency, a mixture of water glass with metal ions (such as Al 3+ , Fe 2+ , Pb 2+ , and Ca 2+ ) have been used in scheelite flotation. − The depressant effect of the joint addition of SS and other salts was first studied by Belash, and a number of studies have since been done. − The original study indicated that these ions could promote the depression capability of water glass in scheelite flotation systems. Oliveira and Sampaio first used FeSO 4 ·7H 2 O as a depressant in scheelite flotation .…”