| DESCRIPTION: Design, procurement, start-up
and parallel operation of an 18 m3/d Upflow Anaerobic Sludge
Blanket (UASB) pilot treatment plant and a 50 m3/d extended aeration
activated sludge pilot treatment plant, both incorporating separate
pH adjustment, nutrient addition and heat exchanger. The UASB
plant treated the three most concentrated waste streams, whereas
the activated sludge plant treated the entire waste stream from
an ammonia based dissolving sulphite mill. Findings after about
one year of operation, under several operating conditions, led
to the elimination from further consideration of the UASB process
and to the development of the key design parameters for the full
scale extended aeration activated sludge process. |
