Dissolved air flotation type wastewater processing apparatus equipped with microbubble contacting part equipped with concave groove wall and varied width of wastewater inlet

摘要

The present invention is to provide a dissolved air flotation type wastewater treatment apparatus having a microbubble contact part having a partition wall formed with a concave groove and varied width of wastewater inlet. The apparatus does not use high power consumption devices such as pressurizing pumps, compressors, and pressurizing tanks, as well as branch and/or multiple nozzles which cause pressure loss and coagulation of microbubbles, and supplies the microbubble water to the microbubble contact part without pressure loss and coagulation of microbubbles and brings a uniform distribution of the microbubbles in the microbubble contact part, thereby having low maintenance cost according to the installation cost and power requirements.