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|a (NLM)16477966
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|b ger
|c DE-627
|e rakwb
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|a eng
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|a Gutzeit, G
|e verfasserin
|4 aut
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|a Bioflocculent algal-bacterial biomass improves low-cost wastewater treatment
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|c 2005
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|a Text
|b txt
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|a ohne Hilfsmittel zu benutzen
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|2 rdamedia
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|b nc
|2 rdacarrier
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|a Date Completed 25.05.2006
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|a Date Revised 21.11.2013
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|a published: Print
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|a Citation Status MEDLINE
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|a An innovative technology for the biological treatment of wastewater in regions with sufficient solar radiation based on the simultaneous growth and degradation processes of algal and bacterial biomass is presented. The aim of the work is the improvement of pond technology through the formation of stable algae-bacteria aggregates, which a) permit a simple separation of the algal biomass by gravity sedimentation, b) enable a high removal efficiency for organic carbon and nutrients, and c) are independent in terms of oxygen provision through algal photosynthesis. Algae-bacteria aggregates could be developed with a suitable algal species (Chlorella vulgaris, Strain Hamburg) as a 'model organism' in a wastewater environment. The morphology of algal-bacterial flocs is similar to activated sludge flocs. They are stable and settle quickly. Floc size ranged between 400 and 800 microm. Results of our experiments with an artificially irradiated lab-scale system, operated in continuous flow mode, revealed that even at a relatively short hydraulic detention time of two days, a high elimination capacity of 9.96 g N m(-2) d(-1) and 0.87g Pm(-2) d(-1) can be achieved. Recent investigations confirmed that floc formation of unicellular algae and wastewater bacteria also could be developed and maintained in a pilot-scale system with a water depth of 0.5 m
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|a Comparative Study
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Organic Chemicals
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|a Phosphorus
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|a Carbon
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|a Oxygen
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|a S88TT14065
|2 NLM
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|a Lorch, D
|e verfasserin
|4 aut
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|a Weber, A
|e verfasserin
|4 aut
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|a Engels, M
|e verfasserin
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|a Neis, U
|e verfasserin
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|i Enthalten in
|t Water science and technology : a journal of the International Association on Water Pollution Research
|d 1986
|g 52(2005), 12 vom: 01., Seite 9-18
|w (DE-627)NLM098149431
|x 0273-1223
|7 nnns
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|g volume:52
|g year:2005
|g number:12
|g day:01
|g pages:9-18
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