. 2014 Mar 27;8(9):1932–1944. doi: 10.1038/ismej.2014.42

Table 1. Major geochemical properties of the sediments and porewaters.

Sample ID	Unit	0 h	24 h	48 h	96 h	144 h
Porewater parameters
Nitrate-N	mg l⁻¹	0.15±0.03^a	1.18±0.14^a	1.14±0.02^a	2.68±0.14^a	1.13±0.01^a
Nitrite-N	mg l⁻¹	0.05±0.00^a	0.02±0.03^a	0.03±0.03^a	0.42±0.05^a	0.02±0.02^a
Ammoniacal-N	mg l⁻¹	51.89±13.14^a	30.96±12.72^a	41.89±2.55^a	29.11±6.76^a	48.74±20.43^a
TN	mg l⁻¹	35.53±14.93^a	39.35±15.47^a	65.53±8.27^a	30.44±14.95^b	50.37±18.99^a
TP	mg l⁻¹	0.47±0.13^b	0.19±0.06^b	2.24±0.91^a	0.55±0.36^b	0.76±0.49^b
Phosphate	mg l⁻¹	0.13±0.14^a	0.05±0.00^a	0.03±0.02^a	0.02±0.01^a	0.02±0.02^a
Sulfate	mg l⁻¹	3.59±1.23^b	3.02±0.01^b	4.73±1.49^a,b	17.55±4.17^a	9.18±2.95^a,b

Sediment parameters
Nitrate-N	mg kg⁻¹	7.25±1.16^b,c	32.74±4.02^a,c	28.83±3.40^b	23.83±3.03^a,c	14.50±4.91^d
Ammoniacal-N	mg kg⁻¹	348.07±188.21^a	359.81±187.98^a	452.44±109.05^a	312.10±115.75^a	234.49±22.57^a
TP	g kg⁻¹	1.05±0.65^a	0.55±0.03^a	0.94±0.34^a	0.55±0.14^a	0.95±0.29^a
TN	g kg⁻¹	0.52±0.03^a	0.96±0.22^a	0.85±0.17^a	0.88±0.04^a	0.70±0.24^a
TOC	%	5.33±0.06^a	4.89±0.09^b	4.02±0.01^c	4.20±0.24^c	3.95±0.37^c
MLVSS	%	4.16±0.93^b	4.70±1.64^a,b	6.20±1.68^a	4.97±1.52^a	3.52±1.47^b

Abbreviations: MLVSS, mixed liquor volatile suspended solid; TN, total nitrogen; TOC, total organic carbon; TP, total phosphorus.

All data are presented as mean±s.e., n=3. Significances among the different treatment time points were analyzed by multi-way analysis of variance. The significances of a, b, c and d are at P<0.05 level.