| 摘要 |
<p>A water quality improving agent which is obtained by adding, in predetermined quantities, an enzyme extracted from vegetable, such as an orange, and minerals extracted from mineral containing silicon, as a main component, magnesium and calcium to water, and by agitating for 30-90 minutes the mixture. A suitable quantity of this water quality improving agent is poured in droplets or directly into desired places, such as rivers, lakes and marshes, ponds and sewage purifying tanks.</p> |
