Wastewater treatment

Wastewater in Jordan can be characterized as very strong with high salinity and insignificant heavy metals and toxic organic compounds. For the past two decades Jordan has relied on waste stabilization ponds (WSP) to treat wastewater for reuse in agriculture. This has exacerbated the salinity proble

A membrane bio-reactor (MBR) process was used as a backbone treatment component at the Qingdao International Airport Wastewater Treatment Station (WWTS) Qingdao, China, to biologically remove COD, nitrogen and phosphorus. This paper describes the design of the MBR as well as the operating results of

A nonwoven fabric module was utilized as a solid–liquid separation medium in a membrane bioreactor (MBR) for treating wastewater. The experimental results indicated that nonwoven fabrics had lower filtration resistance than microporous membranes in MBR applications. The optimal aeration intensity wa

The treatment of effluents from the regeneration of cation exchanger by the membrane distillation (MD) process has been investigated. The composition of these effluents is complex due to the content of residual acid (1–50 g HCl/dm3) and different amounts of various salts (ranging in concentration fr

This study aims at identifying the effect of pretreatment such as flocculation and/or adsorption on the performance of crossflow microfiltration (CFMF). CFMF performance was studied in terms of critical flux. The results indicated that: (1) flocculation alone as a pretreatment could effectively remo

The feasibility of the removal of Ag+ ions in a model solution and a sample of rinse water provided from an industrial plating plant was investigated in a batch electrodialysis system. The experiments were carried out using two different types of ion-exchange membranes. The effects of applied potent

Solvent-resistant hollow-fiber UF membranes were selected by measurement of fiber swelling and treatability studies on spent solvent cleaning rinse. The experimental results indicated that the membranes made of both cellulose acetate (CA) and polyacrylonitrile (PAN) materials could tolerate the solv

A novel process was developed to repeatedly utilize MgNH4PO4·6H2O (MAP) for ammonium removal from wastewater by releasing ammonium in MAP through acid dipping. In acid solutions, ammonium can be released to solution from MAP while MAP was transformed to MgHPO4, which can be used to remove ammonium a

The objective of this study was the application of a high-performance compact reactor (HCR) in the treatment by activated sludge of a load polluted by hydrocarbons. The tests were carried out in the laboratory with synthetic water containing fuel oil as the principal source of carbon. A solution ric