The utility model relates to the technical field of
sewage treatment, and discloses a
petrochemical environment-friendly
sewage treatment device which comprises a box body, an
oil separation cavity, an air floatation cavity, a medicament treatment cavity, an air floatation
assembly and a mixing
assembly, an
oil separation cavity, an air floatation cavity and a
chemical treatment cavity are formed in one side in the box body, a partition plate is welded in the
oil separation cavity, a first baffle and a second baffle are sequentially fixed to the inner top, located on the two sides of the partition plate, of the oil separation cavity through bolts, and an air floatation
assembly is arranged at the bottom in the air floatation cavity and comprises an annular
water pipe installed at the bottom in the air floatation cavity through an installation frame. The top of the annular
water pipe is equidistantly connected with sprayers through threaded grooves.
Sewage is treated through an oil
separation method, an air flotation method and a
chemical treatment method, oil stains in the
sewage can be effectively removed, the
workload of subsequent filtering materials is reduced, and therefore the frequent period needed by the filtering materials is reduced, the using amount of the filtering materials is reduced, and the device is
environmentally friendly and suitable for being widely used and popularized.