Abstract: There is described an embodiment of a wastewater treatment system comprising a tank, agitating devices, a water pipe, connecting pipes, dosing devices, a flow-slowing device, and a blow-off pipe. The agitating devices are connected with the tank through the water pipe, the agitating devices being connected therebetween by the connecting pipes. Each one of the agitating devices comprises one of a pump and an agitated tank, the agitating devices mix wastewater and a flocculant together. The dosing devices are provided on the water pipe and the connecting pipes, the dosing devices dose at least one of the flocculant, a coagulant, a pH adjuster and combination thereof to be added in the wastewater treatment system. The flocculant and coagulant are instant dissolving for providing ion exchange between wastewater and the flocculant. Each one of the dosing devices comprises one of a dosing pump and a siphon valve. The pump, the siphon valve or both being free of negative pressure.

Abstract: There is described an embodiment of a wastewater treatment system comprising a plurality of agitating devices and dosing devices. The agitating devices connect with a tank though a water pipe. The agitation devices are connected through connecting pipes. The treated wastewater is discharged by a blow-off pipe. The dosing devices are installed on the water pipe and the connecting pipes. The dosing devices doses at least one of: a flocculants, a coagulant, a pH adjuster and combination thereof. This embodiment of a wastewater treatment system allows for ion exchange between wastewater and flocculants by using high-speed rotating blades of a pump. Treatment of wastewater is performed with small-sized equipment with high efficiency.