Research Problems

Originally, pulping waste treatments were the same as those used in domestic sewage treatment. Problems arise with pulping effluents because of their variable nature. In short-term microbiological oxidation systems, sludge recycling difficulties may occur. Biologists emphasize the need to remove sublethal toxicity, however the responsible chemical entities are largely unknown, and means of measurement are lacking. Massive lime treatment has technical and economic limitations, and specific information concerning unresolved problems is lacking. Thus, a considerable impetus exists for in-process changes or new processes to minimize current wastewater problems.

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