Microbial sewage treater

The utility model provides a microbial sewage treater. Tank body, a filter screen I and a filter screen II are respectively fixed at the left part and the right part in the tank body; the left end surface of the filter screen I is fixedly connected with a microorganism box; the right end of the tank body penetrates through the first oxygen supply pipe, the second oxygen supply pipe, the water inlet pipe and the water outlet pipe. The water inlet pipe is positioned on the right side of the filter screen I; the left end of the water outlet pipe penetrates through the filter screen I and the filter screen II respectively; the oxygen supply pipe I penetrates through the filter screen I; the oxygen supply pipe II penetrates through the filter screen I and the microorganism box respectively; compared with the prior art, compared with the prior art, the sewage treatment device has the beneficial effects that oxygen is conveniently supplied to sewage and the interior of the microorganism box through the oxygen supply