The utility model discloses a
sewage treatment
settling tank which comprises a tank body, an inner spiral water inlet
pipe is arranged on the top surface of the tank body, a water inlet
pipe is arranged on the top surface of the inner spiral water inlet
pipe, a
medicine inlet pipe is arranged on the top surface of the inner spiral water inlet pipe, a slope plate is arranged in the tank body, and a
settling funnel is arranged on the bottom surface of the tank body. A filtering drainage pipe is arranged on one side of the box body. According to the
sewage treatment
settling tank, by arranging the tank body, the internal thread water inlet pipe, the chemical inlet pipe, the settling funnel and the filtering drainage pipe,
sewage can be settled, a matched chemical is added to improve the settling and
impurity removing efficiency, and by arranging the tank body, the internal thread water inlet pipe, the slope plate and the settling funnel, the settling speed of particles in the device can be increased; the bottom of the device can be freely disassembled, workers can conveniently clean the interior of the box body, and meanwhile, the device can quickly precipitate and remove impurities from sewage, so that the
precipitation efficiency of the device is improved.