A leachate sample has taken for treatment to a wastewater treatmentment plant wi

Question

A leachate sample has taken for treatment to a wastewater treatmentment plant with a Complete mix reactor with aeration ditches and activated sludge. Through the monthly period, a significant amount of increase in Ammonia has been observed. Find a proper and optimal solution for remove the ammonia.

Average daily design flow = 0.10

mgd Peak daily design flow = 0.30 mgd

Required effluent quality BOD5 200mg/l

TSS 200 mg/l

Amm- N 30 mg/l

pH 5.5 to 10.5

Monthly analysis unit Concentrations Sample Date mg/l 4/24/15 5/22/15 6/22/15 7/28/15 8/29/15 9/21/15 mg/l Arsenic mg/l 0.656 0.443 0.486 0.634 0.704 0.554 Cadmium mg/l 0.002 0.002 0.002 0.002 0.002 0.002 Chromium mg/l 0.106 0.061 0.083 0.102 0.131 0.09 Copper mg/l 0.025 0.007 0.006 0.005 0.005 0.006 Lead mg/l 0.006 0.006 0.006 0.006 0.006 0.006 Mercury mg/l 0.00022 0.00022 0.0004 0.0002 0.0002 0.0002 Nickel mg/l 0.378 0.262 0.454 0.548 0.501 0.82 Zinc mg/l 1.7 0.508 0.477 0.413 0.221 0.545 pH mg/l 7.1 7.4 8 7.7 7.9 7.7 COD mg/l 5610 3320 2910 3410 6110 2970 BOD5 mg/l 3400 1070 586 947 600 649 Suspended solids mg/l 200 100 137 92 2 40 Ammonia Nitrogen (NH3-N) mg/l 388 412 554 558 850 744

Explanation / Answer

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