126
4. Matières en suspension (MES)
ECH1 ECH2 ECH3 ECH4 ECH5 ECH6 ECH7 ECH8
Amont (mg/l)
86
90
100
81
115
120
69
79
(g/t)
13.76
20.7
8
11.34
18.4
25.2
5.52
9.48
Aval foin (mg/l)
60
51
110
90
61
74
28
51
(g/t)
9.6
11.73
8.8
12.6
9.76
15.54
2.24
6.12
Aval
anthracite
(mg/l)
39
40
34
40
32
30
12
20
(g/t)
6.24
9.2
2.72
5.6
5.12
6.3
0.96
2.4
Rendement d’élimination (%)
ECH1 ECH2 ECH3 ECH4 ECH5 ECH6 ECH7 ECH8
Aval foin
30,24 43,34
/
/
46,96 38,34 59,42 35,45
Aval
anthracite
54,65 55,56
66
50,62 72,18
75
82,61 74,69
5. Demande biologique en oxygène (DBO 5 )
Rendement d’élimination (%)
ECH1 ECH2 ECH3 ECH4 ECH5 ECH6 ECH7 ECH8
Aval foin
21.43 12.5 17.65 16.67
15
10.53 10.91 15.35
Aval
anthracite
42.86 43.75 41.18 38.89
25
36.85 39.4
41.8
ECH1 ECH2 ECH3 ECH4 ECH5 ECH6 ECH7 ECH8
Amont (mg/l)
140
160
170
180
200
190
165
189
(g/t)
22.4
36.8
13.6
25.2
32
39.9
13.2
22.68
Aval foin (mg/l)
110
140
140
150
170
170
147
160
(g/t)
17.6
32.2
11.2
21
27.2
35.7
11.76
19.2
Aval
anthracite
(mg/l)
80
90
100
110
150
120
100
110
(g/t)
12.8
20.7
8
15.4
24
25.2
8
13.2