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Pilot polymer reduces phosphorus; UV adjustments cut wastewater counts but raise budgeting questions
Summary
Water department staff reported a phosphorus-removal pilot achieved average 87% removal but had challenges with iron and manganese removal; adjustments to the wastewater UV channel have reduced microbial counts and may be incorporated permanently, with chemical costs to be split across departments.
Ocean Shores water department staff reported progress on two operational items: a pilot polymer injection for phosphorus removal and changes to wastewater UV-channel hydraulics intended to improve effluent performance.
On the phosphorus pilot, staff said a high-basicity polymer injected into a pilot filter produced an average phosphorus removal of about 87% in…
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