C. Preparation of EM and EM ball
Preparation of EM and EM ball in this experiment, EM was
extended to enhance effective before molding into the ball by
mixing EM, molasses and water in the ratio. EM: Molasses:
water = 1:1:20 into plastic bottles. Close to protect the vacuum
and incubated for a period of seven day. Then, the expanding
EM was molded into EM ball by mixing as bran, rice bran and
sand in a ratio of 1:1:1 and fill the expanding EM. The
moisture was content of 60% and forms a ball sphere as shown
in Fig.1. After that, EM ball were incubated at room
temperature for seven days before using. The EM ball was
used as the treatment of 108 grams per 120 liters of waste
water sample.