scholarly journals Microbial Communities from Different Types of Natural Wastewater Treatment Systems: Vertical and Horizontal Flow Constructed Wetlands and Biofi lters

2016 ◽  
pp. 338-355
Keyword(s):  
Wastewater Treatment ◽  
Microbial Communities ◽  
Constructed Wetlands ◽  
Horizontal Flow ◽  
Different Types ◽  
Wastewater Treatment Systems

Evaluation of Small Wastewater Treatment Plants in the County of Århus – Denmark

1993 ◽  
Vol 28 (10) ◽  
pp. 33-41
Author(s):  
Jes la Cour Jansen ◽  
Bodil Mose Pedersen ◽  
Erik Moldt
Keyword(s):  
Wastewater Treatment ◽  
Constructed Wetlands ◽  
Biological Treatment ◽  
Wastewater Treatment Plants ◽  
Chemical Precipitation ◽  
Common Type ◽  
Treatment Efficiency ◽  
Effluent Quality ◽  
Different Types

Influent and effluent data from about 120 small wastewater treatment plants (100 - 2000 PE) have been collected and processed. Seven different types of plants are represented. The effluent quality and the treatment efficiency have been evaluated. The most common type of plant is mechanical/biological treatment plants. Some of them are nitrifying and some are also extended for chemical precipitation of phosphorus. Constructed wetlands and biological sandfilters are also represented among the small wastewater treatment plants.

scholarly journals Performance of Four Full-Scale Artificially Aerated Horizontal Flow Constructed Wetlands for Domestic Wastewater Treatment

Water ◽  
2016 ◽  
Vol 8 (9) ◽  
pp. 365 ◽  
Author(s):  
Eleanor Butterworth ◽  
Andrew Richards ◽  
Mark Jones ◽  
Gabriella Mansi ◽  
Ezio Ranieri ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Constructed Wetlands ◽  
Domestic Wastewater ◽  
Full Scale ◽  
Horizontal Flow ◽  
Domestic Wastewater Treatment

scholarly journals Chapter 4 Molecular Characterization and Quantification of Microbial Communities in Wastewater Treatment Systems

2016 ◽  
pp. 59-114 ◽  
Author(s):  
Jashan Gokal ◽  
Oluyemi Olatunji Awolusi ◽  
Abimbola Motunrayo Enitan ◽  
Sheena Kumari ◽  
Faizal Bux
Keyword(s):  
Wastewater Treatment ◽  
Microbial Communities ◽  
Molecular Characterization ◽  
Wastewater Treatment Systems

Experience in non-conventional wastewater treatment techniques used in the Czech Republic

2007 ◽  
Vol 56 (5) ◽  
pp. 149-156
Author(s):  
L. Felberova ◽  
J. Kucera ◽  
E. Mlejnska
Keyword(s):  
Wastewater Treatment ◽  
Czech Republic ◽  
Constructed Wetlands ◽  
Algal Bloom ◽  
Horizontal Flow ◽  
Legal Regulations ◽  
The Czech Republic ◽  
Treatment Techniques ◽  
Removal Efficiencies ◽  
Conventional Wastewater Treatment

Among the most common non-conventional wastewater treatment techniques used in the Czech Republic are waste stabilisation ponds (WSP), subsurface horizontal flow constructed wetlands (CW) and vertical flow groundfilters (GF). These extensive systems can be advantageously used for treatment of waters coming from sewerages where the ballast weighting commonly makes more than half of dry-weather flow. The monitoring was focused at 14 different extensive systems. Organics removal efficiencies were favourable (CW–82%; GF–88%); in the case of WSP only 57% due to the algal bloom. Total nitrogen removal efficiencies were 43 and 47% for WSP and GF; in the case of CW only 32% due to often occurring anaerobic conditions in filter beds. Total phosphorus removal efficiencies were 37, 35 and 22% for WSP, GF and CW, respectively. Often occurring problems are the ice-blockage of surface aerators at WSP during wintertimes, the pond duckweed-cover or the algal bloom at WSP during summers; a gradual colmatage of filter systems; and the oxygen deficiency in beds of subsurface horizontal flow constructed wetlands. Czech legal regulations do not allow treated wastewater disposal into underground waters. There is only an exception for individual family houses. Up to now, knowledge gained by monitoring of a village (which uses the infiltration upon a permission issued according to earlier legal regulations) have not shown an unacceptable groundwater quality deterioration into the infiltration areas.

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