在进行炼油污水浮选处理时,需在进水中授加50毫克/升左右的凝聚剂;通常用硫酸铝或三氯化铝.凝聚剂在水中水解生成氢氧化铝絮凝物,这些絮凝物吸附废水中的油和其他悬浮杂质后,随着浮选池释放出的微小空气泡,上升至水面,形成浮渣层。东方红炼油厂对该厂浮渣曾进行离心分层试验,分层后,10% In the process of flotation of oil refinery, it is necessary to add about 50 mg / l of coagulant to the influent water, usually aluminum sulfate or aluminum trichloride. The coagulant is hydrolyzed in water to produce aluminum hydroxide flocs. Adsorption of oil and other suspended impurities in the waste water, with the small air bubbles released by the flotation cell, rising to the water surface to form a scum layer. Dongfanghong refinery centrifuged on the scum of the plant had stratified test, stratified, 10%