Using horizontal skimming tank as an skimming unit after oil water settled, added relevant raise pressure equipment and matching technology, this named the facility sewage treatment technology.

简易污水处理工艺技术是指利用卧式隔油罐作为油水沉降后的隔油装置，并增加相应的提压设备及配套工具。

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Relief valve or vent valves permit a small pressure to be maintained on the vapor over the oil in the tank (except when the tank is being emptied).

卸压阀或通气阀使罐内油面上方的蒸汽保持微正压(油罐正在排空时除外)。

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When an oil tank's temperature rises or falls, pressure or vacuum forms inside the tank.

当油舱内温度升高或下降，在舱内造成压力或真空状态。

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