hospital wastewater has special importance since having pathogens, radioactive materials, pharmaceutical wastes and heavy metals. removing them into environment without any treatment may cause serious problems for the public health. membrane biological reactor is the combination of the activated sludge and membrane filters. this research has investigated the performance of the nano-filtration i...

the opuntia ficus indica mucilage was an abundant and a low cost product. in the presentpaper, it was tested as an eco-friendly flocculants for textile waste water treatment. its performance asflocculants in decolorization, cod removal and turbidity abatement was checked. the natural product wascharacterized using uv-vis and infra-red spectroscopy. the study of the effect, followed by an optimi...

in this study, modeling and optimization of coagulation and flocculation processes in cod removal of galvanized wastewater treatment plant of mobarakeh steel complex (msc) were studied. experiments of this study were designed using response surface method which is one of the most efficient methods in experimental design. the variables assessed in this study, are four factors including ph, input...

A large amount of collectors, inhibitors and modifiers such as oleic acid, water glass sodium carbonate are added to the flotation processing tungsten ore, resulting in difficulty suspended solids (SS) with residual settling down wastewater. The removal efficiency is low commonly used reagents like polyaluminium chloride (PAC) polyacrylamide (PAM). This paper innovatively applied calcium (CaCl2...

Coagulants can be extracted from vegetal material and applied in the treatment of wastewater. These coagulants are derived seeds, leaves, bark, roots fruits. This study focuses on use mucilaginous extract Stenocereus griseus (known as Cardón Guajiro) for removal biochemical oxygen demand (BOD5), chemical (COD), total solids, turbidity color domestic wastewater a pumping station city Cartagena (...

This work reports on the viability of the electroflocculation (EF) process for chemical oxygen demand (COD), turbidity and color removal from a raw effluent originated from a particular textile industry related to hemp manufacture. Firstly, the following operational parameters were optimized: current density; initial pH; electrolysis time; material of the electrode (iron, aluminum or iron-alumi...

Background: Car wash wastewater contains several contaminants such as organic matter, oil, grease, detergents and phosphates, all of which are harmful for the environment. In this study, the application of electrocoagulation (EC) to treat car wash wastewater has been studied, and the operating parameters optimized. The electro-Fenton (EF) for further contaminant removal was also investigated. ...

Release of wastewater into the environment due to anthropogenic industrial or commercial activities is an emerging challenge for developing countries. This study was conducted to investigate the use of two kinds of available clay coagulants namely Shendi and Singa, and their combination with Poly Aluminium Chloride (PAC) for wastewater treatment. The experiments were designed in Completely Rand...

The treatment of effluents requires new methodologies for the tailings. One option is use natural coagulants. Chitosan has amino groups in polymeric chains that allow it to act as a cationic polyelectrolyte and present high density charges, which are easily adsorbed on negatively charged surfaces, case most colloidal impurities water. Thus, this work used chitosan coagulation/flocculation proce...