Environmental Engineering Reference
In-Depth Information
3
0.020
3.700
3.000
0.500
1.700
Mean
0.017
5.00
2.900
0.430
1.700
TKN
1
2.300
19.600
21.400
10.600
11.500
2
3.200
21.000
18.500
9.500
12.000
3
1.900
16.900
20.000
11.200
9.000
Mean
2.470
19.170
19.970
10.430
10.830
PH [-]
1
5.650
5.950
6.030
5.880
5.880
2
6.000
6.120
6.300
6.000
6.400
3
5.430
5.980
5.990
6.230
5.880
Mean
5.690
6.020
6.110
6.040
6.050
EC [µS/cm]
1
540
800.00
670.00
680.00
645.00
2
546
820.00
678.00
693.00
678.00
3
500
815.00
654.00
675.00
652.00
Mean
528.67
811.67
667.33
682.67
658.33
Indicator organisms [counts/100 ml]
Faecal coliforms
1
2
44
31
20
28
2
0
31
19
17
24
3
0
28
22
14
16
Mean
1
35
24
17
23
Total coliforms
1
8
450
378
168
210
2
3
420
400
180
189
3
5
412
300
128
216
Mean
6
428
360
159
205
for operation and maintenance of both the WSPS and the irrigation system. The same
applies for cases, when the irrigation system has to be designed for a beneficial reuse of
the effluent from an existing WSPS.
The recommendations made in Chapters 8 and 9 are applicable for the case of
irrigation with ponds effluent as well, especially in relation to the monitoring
requirements and source control of metals in wastewater. A specific point with respect to
irrigation with effluents, which should be considered, is related to the regulatory
instruments and guidelines, which usually do not limit the application loads with respect
to nutrients, which are considered to be beneficial for the crops or the irrigated plants.
However, this specific case study, as well as the studies described previously, show that
excessive nutrients concentrations could pose environmental hazards and are a potential
source of diffuse pollution.
