This study combines a two-phase biological treatment system of activated sludge/contact aeration process by adding biological contact filters into the rear sector of the activated sludge aeration tank of the slaughterhouse wastewater treatment plant. This system keeps the advantages of complete mixing of substrates and microorganisms and flexible operation of the activated sludge process, and i...

to find the quantity and quality of wastewaters of the two main industrial units of khoy city in west azerbaijan province, iran, namely the slaughterhouse and the totia chocolate factory, ten composite samples were taken in 112 hour intervals between 3.5 and 7.5 a.m. (4 hours working shift) from the slaughterhouse and between 7.5 a.m. and 2 p.m from the totia chocolate factory (8hours working s...

The slaughterhouse industry produces large amounts of highly polluted wastewater which needs to be treated before being discharged water. Thus, this work was conducted investigate the feasibility treating using combined chemical coagulation and electro-Fenton methods. We studied effect process parameters such as polyaluminum chloride (PAC) concentration (25, 50, 75, 100 mg/L) for hydrogen perox...