A practical refinery wastewater case showing how upstream basket filtration can remove oily sludge and suspended solids before biological treatment. Refinery wastewater can contain a combination of suspended solids, oily sludge and other process residues. When the solids load is high, removing part of it before biological treatment can help improve the stability of the downstream process. A wastewater pretreatment project at a Russian refinery provides a practical example. The Initial Situation The refinery was handling wastewater containing significant amounts of oily sludge and suspended solids. The concern was the impact of these contaminants on the downstream biological treatment stage. If larger solids and sludge continued into the biological process, they could increase the operating load and contribute to problems in equipment such as aeration tanks. The customer therefore needed an upstream filtration stage capable of removing larger contaminants before biological treatment. Th...
Hebei YUBO Filtration Equipment Co., Ltd.