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Table 3

Values and proportions of the pollution loads of three RDW sources in the sample households

SourceIndexPollution load (g/(cap·d))
Average (g/(cap·d))Percentage (%)
H1aH2aH3aH4aH5a
WC COD 28.2 ± 20.6 80.9 ± 63.0 30.76 ± 28.3 10.6 ± 5.9 16.2 ± 10.6 21.4 31.3 
NH4+-N 4.4 ± 0.7 7.0 ± 1.6 4.31 ± 0.7 0.4 ± 0.3 0.9 ± 0.5 2.5 93.0 
TN 5.0 ± 0.8 7.6 ± 2.5 4.71 ± 1.0 0.5 ± 0.3 1.0 ± 0.6 2.8 81.7 
TP 0.8 ± 0.4 11.0 ± 0.7 0.93 ± 0.7 0.1 ± 0.1 0.2 ± 0.2 0.5 67.3 
Kitchen COD 30.0 ± 22.0 21.8 ± 12.2 19.1 ± 16.3 6.1 ± 8.6 27.3 ± 16.7 20.5 30.0 
NH4+-N 0.2 ± 0.2 0.1 ± 0.1 0.07 ± 0.1 0.0 ± 0.0 0.1 ± 0.1 0.1 3.1 
TN 0.4 ± 0.2 0.2 ± 0.1 0.14 ± 0.1 0.1 ± 0.1 0.3 ± 0.2 0.2 6.8 
TP 0.3 ± 0.4 0.1 ± 0.2 0.07 ± 0.1 0.0 ± 0.0 0.2 ± 0.2 0.2 20.0 
Other COD 37.8 ± 22.0 27.9 ± 15.7 29.1 ± 23.8 20.4 ± 12.9 18.6 ± 9.1 26.5 38.7 
NH4+-N 0.1 ± 0.2 0.1 ± 0.1 0.10 ± 0.2 0.1 ± 0.1 0.1 ± 0.1 0.1 3.9 
TN 0.3 ± 0.3 0.5 ± 0.3 0.79 ± 0.3 0.2 ± 0.1 0.3 ± 0.2 0.4 11.5 
TP 0.1 ± 0.3 0.0 ± 0.0 0.01 ± 0.0 0.0 ± 0.0 0.2 ± 0.2 0.1 12.7 
SourceIndexPollution load (g/(cap·d))
Average (g/(cap·d))Percentage (%)
H1aH2aH3aH4aH5a
WC COD 28.2 ± 20.6 80.9 ± 63.0 30.76 ± 28.3 10.6 ± 5.9 16.2 ± 10.6 21.4 31.3 
NH4+-N 4.4 ± 0.7 7.0 ± 1.6 4.31 ± 0.7 0.4 ± 0.3 0.9 ± 0.5 2.5 93.0 
TN 5.0 ± 0.8 7.6 ± 2.5 4.71 ± 1.0 0.5 ± 0.3 1.0 ± 0.6 2.8 81.7 
TP 0.8 ± 0.4 11.0 ± 0.7 0.93 ± 0.7 0.1 ± 0.1 0.2 ± 0.2 0.5 67.3 
Kitchen COD 30.0 ± 22.0 21.8 ± 12.2 19.1 ± 16.3 6.1 ± 8.6 27.3 ± 16.7 20.5 30.0 
NH4+-N 0.2 ± 0.2 0.1 ± 0.1 0.07 ± 0.1 0.0 ± 0.0 0.1 ± 0.1 0.1 3.1 
TN 0.4 ± 0.2 0.2 ± 0.1 0.14 ± 0.1 0.1 ± 0.1 0.3 ± 0.2 0.2 6.8 
TP 0.3 ± 0.4 0.1 ± 0.2 0.07 ± 0.1 0.0 ± 0.0 0.2 ± 0.2 0.2 20.0 
Other COD 37.8 ± 22.0 27.9 ± 15.7 29.1 ± 23.8 20.4 ± 12.9 18.6 ± 9.1 26.5 38.7 
NH4+-N 0.1 ± 0.2 0.1 ± 0.1 0.10 ± 0.2 0.1 ± 0.1 0.1 ± 0.1 0.1 3.9 
TN 0.3 ± 0.3 0.5 ± 0.3 0.79 ± 0.3 0.2 ± 0.1 0.3 ± 0.2 0.4 11.5 
TP 0.1 ± 0.3 0.0 ± 0.0 0.01 ± 0.0 0.0 ± 0.0 0.2 ± 0.2 0.1 12.7 

aColumn data are the averages and their standard deviations (n = 15).

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