Development of Rotary Magnetoferrite Treatment with Stirrers for Waste Water Treatment Plants to Reduce Excess Sludge

Table 1

Experimental results for 2 stirrers.

Stirrer	Ferrite particles (g)	Viable cell (CFU/mL)		COD of supernatant liquid (mg/L)
		Control	After treatment	Control	After treatment
Circular	5	10^6	𝟏𝟎^𝟒	13.6	125.8
Cross	5	10^6	𝟏𝟎^𝟓	14.1	180.0
Circular	×	10^7	𝟏𝟎^𝟕	33.5	67.3
×	5	10^7	𝟏𝟎^𝟕	18.6	45.5