The Combined Application of Surface Floating Wetlands and Bottom Anaerobic to Remediate AMD-Contaminated Lakes

Table 1

The Duncan multiple comparison of the typical pollution ions among NW, RW, and AMDW.

	Fe (mg·L^−1)	Mn (mg·L^−1)	Cu (μg·L^−1)	Zn (μg·L^−1)	Pb (μg·L^−1)	SO4^2− (mg·L^−1)
NW	1.1 ± 0.8 A^1a^2	0.0 ± 0.0  Aa	79.7 ± 55.8Aa	279.4 ± 40.4Aa	0.0 ± 0.0  Aa	324 ± 144Aa
RW	3.4 ± 3.2Aa	2.4 ± 1.2Bb	85.3 ± 62.3Aa	607.4 ± 389Aa	47.8 ± 56.7Aa	2071 ± 352Bb
AMDW	40.2 ± 14.0Bb	4.6 ± 0.8Cc	249.2 ± 76Bb	1563 ± 315Bb	112.9 ± 96.7Aa	2190 ± 390Bb
F	48.478	41.108	17.009	31.6	2.651	70.95
p	0.00001	0.00001	0.0003	0.00001	0.1111	0.00001

A¹ is value <1%; a² is value <5%. The value is less than IDLs (instrument detection limit).