Agriculture - - Korean Machinery - >BY DR. RAFAEL D. GUER­RERO III

OUR WORLD TO­DAY has two ma­jor wa­ter crises - the lack of clean wa­ter for drink­ing and the pol­lu­tion of wa­ter bod­ies (seas, rivers and lakes) with do­mes­tic, agri­cul­tural, and in­dus­trial waste­water. In Metro Manila alone, an es­ti­mated 2 mil­lion cu­bic me­ters of do­mes­tic waste­water is pro­duced each day by its more than 20 mil­lion peo­ple. Only 17% of such vol­ume is treated or pro­cessed into clean wa­ter; the rest ends up in Manila Bay and La­guna de Bay.

A com­par­i­son of the con­ven­tional ac­ti­vated sludge process and vermi-fil­tra­tion process of waste­water treat­ment.

Di­a­gram show­ing how vermi-fil­tra­tion works.

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