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sewage treatment system

Sewage treatment comes in two stages - primary and secondary treatment. The primary stage involves a process of screening solids from sewage, leaving a sludge and relatively clear water for further treatment or for disposal into rivers, the sea or on to the land. In the secondary stage the sludge is stirred constantly in vast tanks to get more oxygen into the mixture, allowing bacteria to break down the organic matter and leave a harmless residue that falls as a sediment to the bottom of the tank. After processing, the clear water on top of the tank is discharged into rivers and the sediment is used as landfill or discharged at sea. (Source: WRIGHT)


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Displaying results 1 - 12 of 12 record(s) tagged with this keywordClick/tap on any title to see full details of the record
Namibia Environmental Consultants (NEC) 2021. APP-002255: Operational Environmental Management Plan for the existing sewage treatment plant for Rosh Pinah.
Downloadable files:
Attachment Size
2255_EMP_Existing sewage treatment plant for Rosh Pinah.pdf 3.18 MB
2255_Map_Existing sewage treatment plant for Rosh Pinah.pdf 291.64 KB
Serja Hydrogeo-Environmental Consultants 2021. APP-001998: The Construction and operation of Four Oxidation (Sewer) Ponds in Tses Village, //Karas region.
Downloadable files:
Attachment Size
1998_EIA_The Construction and operation of Four Oxidation Ponds in Tses Village.pdf 7.34 MB
1998_EMP_The Construction and operation of Four Oxidation Ponds in Tses Village.pdf 1.05 MB
1998_Proof of Consultation_The Construction and operation of Four Oxidation Ponds in Tses Village.pdf 8.4 MB
1998_Map_The Construction and operation of Four Oxidation Ponds in Tses Village.pdf 498.32 KB
Om'kumoh Consulting Engineers 2021. APP-002558: Environmental Impact Assessment for the construction and operation of a new sewage pump station and rising main in Kuisebmond, Walvis Bay.
Downloadable files:
Attachment Size
2558_EIA_Construction and operation of a new sewage pump station and rising main in Kuisebmond_Walvis Bay.pdf 2.25 MB
2558_EMP_Construction and operation of a new sewage pump station and rising main in Kuisebmond_Walvis Bay.pdf 1.06 MB
2558_Municipality WB Minutes_Construction and operation of a new sewage pump station and rising main in Kuisebmond_Walvis Bay.pdf 465.77 KB
2558_Proof of Consultation_Construction and operation of a new sewage pump station and rising main in Kuisebmond_Walvis Bay.pdf 8.54 MB
2558_Map_Construction and operation of a new sewage pump station and rising main in Kuisebmond_Walvis Bay.pdf 434.99 KB
GCS Water and Environmental Consultants 2022. APP-003116: Environmental Impact Assessment for the proposed construction and operation of a sewage treatment plant at Osona Village, Otjozondjupa Region.
Downloadable files:
Attachment Size
3116_EIA_Sewage treatment plant at Osona Village_Otjozondjupa Region.pdf 1.72 MB
3116_EMP_Sewage treatment plant at Osona Village_Otjozondjupa Region.pdf 727.79 KB
3116_Municipal Letter_Sewage treatment plant at Osona Village_Otjozondjupa Region.pdf 178.71 KB
3116_Proof of Consultation_Sewage treatment plant at Osona Village_Otjozondjupa Region.pdf 16.43 MB
3116_Map_Sewage treatment plant at Osona Village_Otjozondjupa Region.pdf 672.75 KB
Green Gain Consultants 2022. 221111000316: Operation and maintenance of the existing municipal treatment plant in Swakopmund, Erongo Region.
Downloadable files:
Attachment Size
316_EMP_Existing municipal sewage treatment plant Swakopmund.pdf 937.91 KB
316_Map_Existing municipal sewage treatment plant Swakopmund.pdf 107.97 KB
316_Screening Notice_Existing municipal sewage treatment plant Swakopmund.pdf 115.19 KB
Green Earth Environmental Consultants 2023. 230220001019: The construction and operation of a new sewage treatment plant for Schuckmansburg Memorial School, Luhonono, Zambezi Region.
Downloadable files:
Attachment Size
1019_SR_New sewage treatment plant_Schuckmansburg Memorial School_Luhonono_Zambezi Region.pdf 3.81 MB
1019_EMP_New sewage treatment plant_Schuckmansburg Memorial School_Luhonono_Zambezi Region.pdf 439.12 KB
1019_Consent Letter_New sewage treatment plant_Schuckmansburg Memorial School_Luhonono_Zambezi Region.pdf 496.87 KB
1019_Proof of Consultation_New sewage treatment plant_Schuckmansburg Memorial School_Luhonono_Zambezi Region.pdf 1.75 MB
1019_Map_New sewage treatment plant_Schuckmansburg Memorial School_Luhonono_Zambezi Region.pdf 496.53 KB
1019_Screening Notice_New sewage treatment plant_Schuckmansburg Memorial School_Luhonono_Zambezi Region.pdf 170.17 KB
Green Earth Environmental Consultants 2023. 230220001020: The construction and operation of a new sewage treatment plant for Ndoro Memorial Primary School, Omega III, Zambezi Region.
Downloadable files:
Attachment Size
1020_EIA_Sewage treatment plant_Ndoro Memorial Primary School_Omega III_Zambezi Region.pdf 3.52 MB
1020_EMP_Sewage treatment plant_Ndoro Memorial Primary School_Omega III_Zambezi Region.pdf 439.01 KB
1020_Consent Letter_Sewage treatment plant_Ndoro Memorial Primary School_Omega III_Zambezi Region.pdf 108.02 KB
1020_Proof of Consultation_Sewage treatment plant_Ndoro Memorial Primary School_Omega III_Zambezi Region.pdf 635.73 KB
1020_Map_Sewage treatment plant_Ndoro Memorial Primary School_Omega III_Zambezi Region.pdf 636.97 KB
1020_Screening Notice_Sewage treatment plant_Ndoro Memorial Primary School_Omega III_Zambezi Region.pdf 171.03 KB
Excel Dynamic Solutions 2023. 230215000996: Environmental Management Plan (EMP) for the existing effluent (sewage) treatment plant in Lüderitz Town, //Karas Region.
Downloadable files:
Attachment Size
996_EMP_Existing effluent_sewage_treatment plant in Luderitz Town.pdf 3.93 MB
996_Map_Existing effluent_sewage_treatment plant in Luderitz Town.pdf 337.38 KB
996_Screening Notice_Existing effluent_sewage_treatment plant in Luderitz Town.pdf 180.42 KB
Excel Dynamic Solutions 2023. 230327001183: Environmental Impact Assessment (EIA) study for the existing oxidation ponds and new sewage treatment plant in Eenhana Town, Ohangwena Region.
Downloadable files:
Attachment Size
1183_EMP_Existing oxidation ponds and new sewage treatment plant in Eenhana Town_Ohangwena Region.pdf 1.92 MB
1183_Map_Existing oxidation ponds and new sewage treatment plant in Eenhana Town_Ohangwena Region.pdf 288.84 KB
1183_Screening Notice_Existing oxidation ponds and new sewage treatment plant in Eenhana Town_Ohangwena Region.pdf 171.57 KB
Excel Dynamic Solutions 2023. 230327001181: Development of the Environmental Management Plan (EMP) for the existing effluent treatment plant in Lüderitz, //Karas Region.
Downloadable files:
Attachment Size
1181_EMP_Existing effluent treatment plant in Luderitz.pdf 3.33 MB
1181_Map_Existing effluent treatment plant in Luderitz.pdf 282.99 KB
1181_Screening Notice_Existing effluent treatment plant in Luderitz.pdf 171.45 KB
Red-Dune Consulting 2023. 230313001127: Application for the renewal of Environmental Clearance Certificate for sewerage facilities site for University of Namibia at Neudamm Campus and Farm, Khomas Region.
Downloadable files:
Attachment Size
1127_EMP_Sewerage facilities site for University of Namibia at Neudamm Campus and Farm.pdf 1.06 MB
1127_ECC Old_Sewerage facilities site for University of Namibia at Neudamm Campus and Farm.pdf 254.55 KB
1127_Map_Sewerage facilities site for University of Namibia at Neudamm Campus and Farm.pdf 289.37 KB
1127_Screening Notice_Sewerage facilities site for University of Namibia at Neudamm Campus and Farm.pdf 60.34 KB
Omavi Geotechnical and Geo-environmental Consultants 2025. 250421005732: Renewal application of Environmental Clearance Certificate (ECC) for the continued construction, operation and decommissioning of a new Waste Dumpsite for the Helao Nafidi Town Council, Ohangwena Region, Namibia.
Downloadable files:
Attachment Size
5732_EMP_New waste dumpsite for the Helao Nafidi Town Council_Ohangwena Region.pdf 1.52 MB
5732_Declaration of Authorship_New waste dumpsite for the Helao Nafidi Town Council_Ohangwena Region.pdf 160.62 KB
5732_ECC Old_New waste dumpsite for the Helao Nafidi Town Council_Ohangwena Region.pdf 1.79 MB
5732_Map_New waste dumpsite for the Helao Nafidi Town Council_Ohangwena Region.pdf 559.48 KB
5732_Screening Notice_New waste dumpsite for the Helao Nafidi Town Council_Ohangwena Region.pdf 92.69 KB
5732_CV_New waste dumpsite for the Helao Nafidi Town Council_Ohangwena Region.pdf 210.27 KB
Displaying results 1 - 12 of 12