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Textiles manufacturing consumes a considerable amount of water in its manufacturing process. However, commonly the manufacturers discharge their wastewater into environment without appropriate treatment. Wastewater from these industries usually content contaminant parameter due to dye content which can decrease the environment quality. In this research, the effect of several parameters such as agitation,...
Today, numerous treatment plants are designed and operated using chemicals for nutrient removal, sludge conditioning and promotion of better sedimentation or flotation. Cement kiln dust (CKD) is useless byproduct from the cement industry and a significant resource value for lime substituting. In this paper work, CKD is used as a chemical precipitant for activated sludge process pilot plant without...
Three dominant bacteria of A-1, B-1 and C-1 for phenol degradation were screened by domestication. Then study on the treatment efficiency of phenol by the three dominant bacteria was carried out under different concentration of phenol wastewater. The results showed that phenol removal efficiency decreased as the phenol concentration increasing. The phenol removal efficiency rates achieved 46.74%,...
Aerated stabilization basins (ASB) accumulate benthal solids as they provide biotreatment to wastewaters. The accumulated solids must digest at a rate that matches the rate of settling of fresh solids in order to maintain the water column depth at the design value. In practice, however, the deposited solids digest at rates much slower than the fresh deposition rates, resulting in solids accumulation...
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