Dissolved organic nutrients N/P ratio and BOD

Exp. A	TKN-N		DON	TN	TP		TN/TP
Trickling filters
Time	av	±	av	av	av	±	av
6:45	2.269	0.977	2.226	4.634	0.416	0.004	11.131
11:45	2.466	0.140	2.412	4.433	0.426	0.006	10.417
16:45	3.453	0.698	3.375	5.499	0.454	0.012	12.112
6:45	2.269	0.419	2.229	4.974	0.461	0.004	10.785
11:45	1.677	0.698	1.625	4.981	0.454	0.012	10.970
16:45	2.466	0.698	2.392	5.231	0.462	0.020	11.318
6:45	1.677	0.140	1.635	4.711	0.527	0.003	8.934
11:45	1.283	0.419	1.226	4.436	0.450	0.003	9.859
16:45	1.776	1.116	1.724	4.530	0.485	0.003	9.349
average	2.149	0.589	0.589	4.825	0.459	0.007	10.542
stdev	0.639	0.340	0.631	0.372	0.032	0.006	1.009
Sump
6:45	2.960	0.140	2.781	6.233	0.520	0.006	11.982
11:45	1.579	0.698	1.416	4.203	0.422	0.012	9.949
16:45	2.368	1.395	2.193	4.763	0.432	0.013	11.035
6:45	2.171	0.419	2.023	5.324	0.499	0.003	10.674
11:45	1.184	1.116	1.033	4.048	0.458	0.003	8.837
16:45	2.368	1.116	2.202	5.292	0.462	0.009	11.450
average	2.236	0.791	2.076	5.216	0.471	0.009	11.051
stdev	0.560	0.382	0.559	0.736	0.034	0.005	1.134
Trickling Filters
Exper. B	TKN-N		DON	TN	Tp		TN/TP	BOD
Time	av	±	av	av	av	±	av	av	±
6:45	2.171	.395	2.131	5.105	0.479	0.011	10.658	0.556	0.468
11:45	0.839	0.519	0.789	3.798	0.357	.009	10.628	0.973	0.543
16:45	1.924	0.691	1.888	3.790	0.438	0.003	8.648	0.703	0.592
6:45	1.677	0.613	1.651	4.322	0.420	0.011	10.280	0.541	0.325
11:45	1.924	0.567	1.900	4.853	0.415	0.010	11.699	0.717	0.116
16:45	1.924	0.888	1.900	4.144	0.392	0.013	10.561	1.231	0.454
average	1.628	0.591	1.593	4.274	0.417	0.009	10.289	0.896	0.392
stdev	0.479	0.149	0.484	0.543	0.039	0.004	1.257	0.269	0.150
6:45	1.332	0.296	1.189	5.074	0.474	0.007	10.697	1.311	0.476
11:45	0.789	0.426	0.690	3.878	0.358	0.004	10.822	1.437	0.459
16:45	2.318	0.672	2.218	4.634	0.417	0.013	11.102	1.434	0.305
6:45	2.417	0.652	2.328	5.047	0.411	0.004	12.287	1.556	0.362
11:45	1.332	0.589	1.214	4.431	0.377	0.003	11.747	1.145	0.490
16:45	1.283	0.342	1.165	4.456	0.396	0.013	11.253	1.280	0.221
6:45	2.417	0.652	2.328	5.047	0.411	0.004	12.287	1.556	0.362
11:45	1.381	0.426	1.279	4.670	0.423	0.011	11.040	0.875	0.408
16:45	1.727	0.888	1.606	4.207	0.382	0.005	11.019	1.304	0.168
average	1.557	0.575	1.442	4.649	0.411	0.007	11.300	1.304	0.341
stdev	0.520	0.220	0.527	0.481	0.039	0.004	0.518	0.199	0.127

Table 6: Dissolved organic nutrients N/P ratio and BOD recorded in Experiment A (above) and B (below). All data expressed as mg L^-1 or mg L^-1 d^-1 in BOD. Average values are the result of 4 replicates, ± one standard deviation.

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