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result sql = Parasite removal by natural wastewater treatment systems: performance of waste stabilisation ponds and constructed wetlands.
Parasite removal by natural wastewater treatment systems: performance of waste stabilisation ponds and constructed wetlands.
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char = n;code = 110
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char = n;code = 110
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char = a;code = 97
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char = ;code = 32
char = s;code = 115
char = y;code = 121
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char = m;code = 109
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char = ;code = 32
char = p;code = 112
char = a;code = 97
char = r;code = 114
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char = s;code = 115
char = i;code = 105
char = t;code = 116
char = e;code = 101
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char = r;code = 114
char = e;code = 101
char = m;code = 109
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char = ;code = 32
char = v;code = 118
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char = r;code = 114
char = i;code = 105
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char = t;code = 116
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char = ;code = 32
char = r;code = 114
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char = ;code = 32
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char = o;code = 111
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char = ;code = 32
char = p;code = 112
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char = t;code = 116
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char = e;code = 101
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char = n;code = 110
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char = w;code = 119
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char = r;code = 114
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char = i;code = 105
char = t;code = 116
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char = e;code = 101
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char = e;code = 101
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char = r;code = 114
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char = e;code = 101
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char = g;code = 103
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char = ;code = 32
char = b;code = 98
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char = ;code = 32
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char = t;code = 116
char = e;code = 101
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char = ;code = 32
char = t;code = 116
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char = m;code = 109
char = e;code = 101
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char = t;code = 116
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = 5;code = 53
char = 0;code = 48
char = ;code = 32
char = m;code = 109
char = ;code = 32
char = b;code = 98
char = e;code = 101
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char = s;code = 115
char = ;code = 32
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char = n;code = 110
char = d;code = 100
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char = c;code = 99
char = o;code = 111
char = m;code = 109
char = p;code = 112
char = l;code = 108
char = e;code = 101
char = t;code = 116
char = e;code = 101
char = l;code = 108
char = y;code = 121
char = ;code = 32
char = r;code = 114
char = e;code = 101
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char = o;code = 111
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char = e;code = 101
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char = f;code = 102
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char = ;code = 32
char = t;code = 116
char = r;code = 114
char = e;code = 101
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char = t;code = 116
char = m;code = 109
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char = 0;code = 48
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char = m;code = 109
char = ;code = 32
char = b;code = 98
char = e;code = 101
char = d;code = 100
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char = /;code = 47
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result sql = Parasite removal and low cost systems for wastewater treatment have become increasingly important requirements in developed and developing countries to safeguard public health from wastewater-associated intestinal diseases. Pilot and field-scale ponds and wetlands in Brazil and Egypt have been investigated for the fate and removal of eggs of human intestinal parasites from domestic wastewater. In northeast Brazil, parasite removal was investigated for a series of five waste stabilisation ponds treating raw wastewater. In Egypt, parasite removal was studied for Gravel Bed Hydroponic constructed wetlands treating partially treated wastewater. Influents to ponds and wetlands contained a variety of parasite helminth eggs (e.g. Ascaris, hookworm, Trichuris, and Hymenolepis spp.). The ponds consistently removed parasite eggs though rate of removal by individual ponds may have been related to influent egg numbers and extent of short-circuiting. Parasite eggs were reduced on average by 94% and 99.9% in the anaerobic and facultative ponds respectively. No eggs were found in effluent from the second maturation pond. In the wetland system, parasite removal varied with reedbed length. The majority of parasite eggs were retained within the first 25 m. Parasite eggs were reduced on average by 98% after treatment in 50 m beds and completely removed after treatment in 100 m beds.

Publication: Water Sci. Technol. 2003 ;48(2)::97-104.
Publication Date: 2003
Study Author(s): Stott, R;Mayr, E;Mara, D D;
Institution: Department of Civil Engineering, University of Portsmouth, PO1 3QL, UK. [email protected]
Shortcut link to this study:
Parasite removal and low cost systems for wastewater treatment have become increasingly important requirements in developed and developing countries to safeguard public health from wastewater-associated intestinal diseases. Pilot and field-scale ponds and wetlands in Brazil and Egypt have been investigated for the fate and removal of eggs of human intestinal parasites from domestic wastewater. In northeast Brazil, parasite removal was investigated for a series of five waste stabilisation ponds treating raw wastewater. In Egypt, parasite removal was studied for Gravel Bed Hydroponic constructed wetlands treating partially treated wastewater. Influents to ponds and wetlands contained a variety of parasite helminth eggs (e.g. Ascaris, hookworm, Trichuris, and Hymenolepis spp.). The ponds consistently removed parasite eggs though rate of removal by individual ponds may have been related to influent egg numbers and extent of short-circuiting. Parasite eggs were reduced on average by 94% and 99.9% in the anaerobic and facultative ponds respectively. No eggs were found in effluent from the second maturation pond. In the wetland system, parasite removal varied with reedbed length. The majority of parasite eggs were retained within the first 25 m. Parasite eggs were reduced on average by 98% after treatment in 50 m beds and completely removed after treatment in 100 m beds.
PMID: 14510199

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