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Optimizing Reuse of High Load Wastewater

Aquaculture processing plant
Maine


Project Background

An aquaculture company was seeking to treat high nutrient wastewater from their fish processing operations. They needed to meet a discharge limit as well as create a value added waste prod-uct from the concentrate. The critical parameters were to reduce the COD below 500 mg/L and to achieve a >5X concentration of phosphorus in the waste. This concentrate was evaluated by prospective customers in the fertilizer market.

Equipment Selection

To meet the discharge limit at a permeability ca-pable of scaling up to large treatment volumes, Cerahelix used the NanoHelix. We installed a pilot unit cross flow filtration system containing our ce-ramic NanoHelix membranes.

Premeate vs Composite

System Parameters
Cerahelix filterNanoHelix
Wastewater flow100,000 GPD
Influent COD range3000—4000 ppm
pH7.0
Hydraulic Recovery>85%
ParameterInlet
(mg/ L)
Permeate
(mg/L)
Concentrate
(mg/L)
COD3,41014413,200
Phosphorus18925720