Table 1.

Composition of ureolyzed urine from the women's urine storage tank (low-concentration urine) and the men's urine storage tank (high-concentration urine) at Eawag. The number of measurements was usually six

		Low-concentration urine		High-concentration urine
		Average	Std. dev.	Average	Std. dev.
Total COD	(mg L−1)	1710	50	4510	290
Total ammonia N	(mg L−1)	1860	40	2790	170
Nitrite N	(mg L−1)	<0.15	—	<10	—
Nitrate N	(mg L−1)	<1	—	<10	—
Chloride	(mg L−1)	1250	130	3800	150
Total phosphate P	(mg L−1)	88	9	242	8
Sulfate	(mg L−1)	234	25	822	45
Total inorganic carbon	(mg L−1)	903a	—	—	—
Conductivity	(mS cm−1)	15.1a	—	30.1	1.1
pH	(—)	9.1b	0.1	9	0.1
COD/ammonia-N	(mg mg−1)	0.92	0.04	1.62	0.20
COD/Cl−	(mg mg−1)	1.38	0.13	1.18	0.05
Ammonia-N/Cl−	(mg mg−1)	1.50	0.15	0.74	0.05

^aOne measurement.

^bFive measurements.