A water-treatment works treats a flow of 50 000 m 3 /day. The water is dosed with alum at a dose of 5 mg Al/l. This permits the removal of an average of 5 mg/1 of colloidal material in the clarifiers.

1984). Grow pad oxide. Deposit CVD (Chemical Vapor Deposition) nitride. (See Fig. A1.1.) FIGURE A1.1 Lithography to cover the active region with photoresist. Reactive ion etching (RIE) nitride and ...