Lessons learned of the commissioning of advanced digesters seeded with hydrolysed digested cake from a faraway site: PRESENTATION ONLY

Leclerc, D., Nadarajan, E. and Parker-Dennison, M., MWH Treatment, UK


TRA Central Regional Wastewater System
▪ In service since 1959
▪ Connected to 20 cities in the Dallas/Fort Worth area
▪ Treatment capacity:
▪ 1.4 million PE
▪ 715,000 m3/d

At design stage, several options were envisaged:
I. Conventional seeding with local conventional digesters
II. Seeding with liquid Hydrolysed sludge from Blue Plain Washington DC
III. Seeding with digested cake from Blue Plain Washington DC
The last option (seeding with cake was retained) was retained for financial reasons.
But this leads to several challenges…

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