Sewage treatment apparatus

The utility model discloses a sewage treatment apparatus, including the sewage collecting vat, the bottom of sewage collecting vat is provided with the link, the link has the external screw thread, the outside of link is passed through matching the external screw has drainage pipe, drainage pipe's bottom is provided with the sealing cap, the sealing cap with threaded connection between the drainage pipe, the middle part position department of sewage collecting vat is provided with the through -hole, the through -hole fit in has the filter tube, the bottom threaded connection of filter tube has the filter screen, the top of filter tube is provided with first filter screen, the filter screen with the cooperation has the filter core between the first filter screen, the device can replace the washing tank, tests produced sewage and is collected by the sewage collecting vat, then filters back rethread drainage pipe through the filter tube and discharges, can be according to the kind of the nimble selection filter core of the type of the sewage that discharges, satisfy the filtration need, avoid the emission of toxic and side effect's sewage.