| The oil pollution situation is getting more and more serious,and the treatment of oil pollution has become a worldwide problem.This paper takes the spring water polluted by petroleum hydrocarbons in Jingxi Village,Wandong Town,Wansheng District,Chongqing City as the research object.According to the state of petroleum hydrocarbons in water and the difficulty of removing pollutants,the pretreatment device and deep treatment device are designed and on site.A treatment test was carried out.The pretreatment device is divided into two parts: the first part is the pre-precipitation device,which mainly makes the preliminary separation and removal of petroleum hydrocarbon pollutants in the water by changing the hydraulic movement mode of the influent;the second part is the initial filtration device,which adopts As a physical filter material,the fiber cotton ball removes pollutants such as suspended particles in the water.The COD and turbidity changes of the influent and outlet water of the pretreatment device were compared to evaluate the treatment effect of the pretreatment device on the polluted spring water.The advanced treatment device uses a single medium or a combination medium of different ratios to deeply treat the dissolved oil in the polluted spring water by biochemical action.The single medium is selected by using activated carbon and quartz sand separately for advanced treatment;the combined medium adopts the combination of “activated carbon + quartz sand” with a volume ratio of 6:4,and the activated carbon + quartz sand + reducing ratio is 10:8:2.The combination of “iron powder” and volume ratio of “8:9:1” “activated carbon + quartz sand + reducing iron powder” is used for the advanced treatment of polluted spring water,and the COD and turbidity of the inlet and outlet water of the deep treatment device are compared.The change is used to evaluate the difference in the treatment effect of the deep treatment device filling different media on the polluted spring water. |
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