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Table 4 Nitrogen and phosphorus contents of various wastewater.

From: Integration of biology, ecology and engineering for sustainable algal-based biofuel and bioproduct biorefinery

Wastewater source N (mg/L) P (mg/L) N:P ratio (molar)
Domestic 20 to 85 5 to 20 11 to 13
Pigs 800 to 2300 50 to 320 12 to 17
Beef cattle 63 14 10
Dairy cattle 185 30 4
Poultry 800 50 32
Coke production 757 0.5 3000
Tannery 273 21 29
Paper mill 11 0.6 41
Textile 90 18 11
Winery 110 52 5
Anaerobic digestion food waste 1600 to 1900 300
Olive mill 530 182 2.9