Embed Size (px)
Citation preview
107107
8ENVIRONMENTAL ASPECTS
SewageIndustrialdischarges
Evaporation
Wastewater treatment plant(in developing countries)
Sewerage system
Irrigation channels
Infiltration
Storage damAquaculture
Aquatic plants
Sprinklers
Evaporation
River
Irrigationdrainage
Aquatic plants
Lake
Cattle consumingirrigated crops
ConsumerCropsCattleWater
Aquifer
Water + salts
Infiltration
Soil(retains metals, organic matter and phosphorus)
Compounds and waterabsorption by plants
108
Guidelines for the safe use of wastewater, excreta and greywater
109109
Volume 2: Wastewater use in agriculture
110
Guidelines for the safe use of wastewater, excreta and greywater
110
111
Volume 2: Wastewater use in agriculture
111
112
Guidelines for the safe use of wastewater, excreta and greywater
112
113
Volume 2: Wastewater use in agriculture
113
114
Guidelines for the safe use of wastewater, excreta and greywater
114
115
Volume 2: Wastewater use in agriculture
115
116
Guidelines for the safe use of wastewater, excreta and greywater
116
Tabl
e8.1
(con
tinue
d)
117
Volume 2: Wastewater use in agriculture
117
Tabl
e8.1
(con
tinue
d)
(con
tinue
d)
118
Guidelines for the safe use of wastewater, excreta and greywater
118
Tabl
e8.1
(con
tinue
d)
(con
tinue
d)
119
Volume 2: Wastewater use in agriculture
119
Tabl
e8.1
(con
tinue
d)
(con
tinue
d)
120
Guidelines for the safe use of wastewater, excreta and greywater
120
Tabl
e8.1
(con
tinue
d)
(con
tinue
d)
121
Volume 2: Wastewater use in agriculture
121
122
Guidelines for the safe use of wastewater, excreta and greywater
122
123
Volume 2: Wastewater use in agriculture
123
Water balance in Mexico City and the Mezquital Valley
29 m3/s from groundwaterand surface water from basins
requiring pumping 1200 mfrom 300 km
62 m3/s Mexico City watersupply
12 m3/s of rainwater and 48 m3/s ofmunicipal wastewater
8 m3/s urban reuse
52 m3/s of wastewater
100 m
25 m3/s of wastewater infiltration
25m
3 /sof
natu
ral
rech
arge
33m
3 /sfro
mgr
ound
wat
er
Mexico City aquifer
Mezquital Valley aquifer
70 km
124
Guidelines for the safe use of wastewater, excreta and greywater
124
Box 8.3 (continued)
125
Volume 2: Wastewater use in agriculture
125
Guidelines for the safe use of wastewater, excreta and greywater
126126
127
Volume 2: Wastewater use in agriculture
127
128
Guidelines for the safe use of wastewater, excreta and greywater
128
Table 8.5 (continued)
