This utility model discloses an intelligent dissolved
oxygen regulation device for a biological treatment tank, relating to the field of
wastewater treatment technology. Specifically, it includes a water tank, within which an
aeration disc and a dissolved
oxygen analyzer are fixedly installed. A blower is located outside the water tank, and a frequency converter and controller are located outside the blower. An air supply
pipe is fixedly installed at the output end of the blower, and a four-way fitting is fixedly connected to one end of the air supply
pipe. An air plate is fixedly installed inside the
aeration disc, and several sealing blocks are installed inside the air plate. Several fixing brackets are fixedly installed at the bottom of the air plate. This utility model uses a preset standard dissolved
oxygen value and a dissolved
oxygen analyzer to monitor the dissolved
oxygen content in the
wastewater. When the measured value at a certain time does not meet the preset standard value, the controller increases or decreases the blower's
airflow and the frequency converter's speed, thereby adjusting the dissolved oxygen value in the water tank in a timely manner, facilitating stable
wastewater treatment.