D.Experimental section
In wastewater treatment, the experiment was divided into
three set, each set of the third repeat. Set A, sample was not
EM ball but only added the air using pump air flow. Set B,
sample was added only EM ball from our laboratory room. Set
C, sample was added only commercial EM ball. The process
of implementation can be divided into two parts. The first one,
waste water sample was separated two parts. The first part was
determined the characteristics and properties of the water