Coupling of physico-chemical treatment and steel membrane filtration to enhanced organic removal in wastewater treatment

Abstract

A B S T R A C TIn this study, the application of steel membrane filtration was tested with the pre-treated wastewater. The pre-treatment methods tested before membrane filtration application were flocculation using FeCl 3 , Powdered Activated Carbon (PAC) adsorption, purolite ionexchange column and purolite ion-exchange column followed by flocculation (FeCl 3 ). The effect of two different modes of membrane application (cross-flow and dead-end modes) was examined. The ability of these filters in removing organic matters and solids were examined. It was found that the decline of flux was slightly lower for dead-end mode of operation to that of cross-flow mode of operation. Pre-treatment increased the performance of membrane filtration. The flux decline of raw water (without pre-treatment) was 31-40%, whereas after pre-treatment, it was about 2.5-21%. Pre-treatment followed by microfiltration (MF) showed 68-91% removal efficiency of dissolved organic carbon (DOC).

Rapid adsorption and photocatalytic activity for Rhodamine B and Cr(vi) by ultrathin BiOI nanosheets with highly exposed {001} facets

“…With the development of various industries, such as leather, chemical, electroplating and paper industries, a huge amount of wastewater containing organic molecules, heavy metal ions and other contaminants even their metabolites are discharged to the environment without appropriate treatment, which can not only induce serious water pollution but also affect human health. 1,2 Therefore, many technologies have been applied to remove pollution from wastewater, such as sedimentation, 3 biological treatment, 4 ion-exchange, 5 adsorption, 6 photochemical oxidation, 7 membrane processes, 8 and photocatalytic degradation. 9,10 Among them, the adsorption and photocatalytic degradation exhibit high efficiency, low cost, and simple operation processes for removing the contaminants in wastewater.…”

Efficient and Rapid Removal of Pb(II) and Cu(II) Heavy Metals from Aqueous Solutions by MgO Nanorods

“…As a result, increasing efforts are being Inorganics 2022, 10, 256 2 of 15 made to develop an approved technology for wastewater treatment. Chemical and physical procedures such as chemical oxidation [18], ozonation, adsorption [19], froth flotations, reverse osmosis, membrane separation [20], coagulation [21], flocculation, and electrocoagulation are often utilized in the treatment process [19]. Regarding dye elimination, adsorption is the favored technique between the others used because of its affordable price, easy preparation, and a diminutive amount of energy consumption [22][23][24].…”

Preparation of Magnetic Composite Hollow Microsphere and Its Adsorption Capacity for Basic Dyes

“…Dye wastewater with high color intensity and complex components is largely yielded from the printing and dyeing industries, which can induce serious water pollution without appropriate treatment before its discharge. , Thus, different methods, including adsorption, membrane processes, flocculation or sedimentation, , photocatalytic degradation, − and biological treatment, , have been explored to remove dyes from the wastewater. Especially adsorption has been proven to be one of the most effective methods for removing a wide variety of pollutants in wastewater due to its high efficiency and simple operation process. , Therefore, different adsorbents such as activated carbon (AC), − mesoporous SiO 2 , , polymer microspheres or networks, and alumina were synthesized and their adsorption properties were studied.…”