C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
362/4
C02F 3/28 (2006.01) C02F 3/30 (2006.01) D21C 9/02 (2006.01)
Patent
CA 1231184
Abstract of the Disclosure The invention relates to a method of treating wastewater obtained from closed manufacture of mechanical or chemi-mechanical cellulose pulp, which treatment is carried out in a hydrolysis/acid fermentation step and a methane fermentation step with subsequent sludge separation and recycling of separated sludge.
460582
Andersson Per-Erik
Annergren Goran
Hoglund Hans
Peterson Viking
Fetherstonhaugh & Co.
Purac Aktiebolag
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