+ Site Statistics
References:
54,258,434
Abstracts:
29,560,870
PMIDs:
28,072,757
+ Search Articles
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ PDF Full Text
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Translate
+ Recently Requested

Total removal of coliforms and E. coli from domestic sewage by high-rate pond mass culture of Scenedesmus obliquus



Total removal of coliforms and E. coli from domestic sewage by high-rate pond mass culture of Scenedesmus obliquus



Environmental Pollution Series A, Ecological and Biological 34(3 ): 7-206



The single celled alga Scenedesmus obliquus was cultured in biologically treated domestic sewage in small experimental ponds (4·5 m2) with a depth of 25 cm. Attention was focused on the removal of total coliforms and E. coli—indicators of water pollution by human faecal contamination—from sewage effluent using a mass culture of microalgae (Scenedesmus obliquus). Batch, continuous and intermittent flow systems were studied. Results of batch culture experiments showed total removal of E. coli within 4 days. In the control ponds, in which Scenedesmus obliquus was not inoculated, and natural growth allowed to take place, E. coli was detected even on the tenth day. The results obtained confirmed reports in the literature which concluded that high pH values (above 9·4) were responsible for E. coli removal; pH values were always higher than 9·4 on the third day, reaching a maximum of 11·1 around the fifth day in batch culture systems. Semi-continuous flow culture systems were operated under three dilution rates: 0·5 day1, 0·33 day1 and 0·25 day1. Results indicated that total removal of E. coli was not achieved even at a dilution rate of 0·25 day1, even though pH values above 10·0 were observed. Under intermittently fed systems, two dilution rates, 0·5 day1 and 0·25 day1, with respective feeding intervals of 1 and 2 days, were studied. Total removal of E. coli was observed at a dilution rate of 0·25 day1. These results have proved that a contact time of 2 days at pH 11·0 is adequate for total removal of E. coli from high-rate algal ponds.

(PDF emailed within 0-6 h: $19.90)

Accession: 018187457

Download citation: RISBibTeXText

DOI: 10.1016/0143-1471(84)90116-8


Related references

Total removal of coliforms and escherichia coli from domestic sewage by high rate pond mass culture of scenedesmus obliquus. Environmental Pollution Series A Ecological & Biological 34(3): 197-206, 1984

Nutrients removal mechanisms in high rate algal pond treating rural domestic sewage in East China. Water Science and Technology: Water Supply 6(6): 43-50, 2006

Microalgal biomass production and nutrients removal from domestic sewage in a hybrid high-rate pond with biofilm reactor. Ecological Engineering 106: 191-199, 2017

Association among the densities of coli phage escherichia coli total bacteria algae total coliforms and fecal coliforms below a sewage outfall in the monongahela river west virginia usa. Proceedings Of The West Virginia Academy Of Science: 8, 1982

Nutrient removal from sewage effluents using scenedesmus obliquus. Indian Journal of Environmental Health 23(1): 53-59, 1981

Evaluation of virus recovery methods and efficiency of tannin-derived coagulants in removing total coliforms, E. coli and enteric viruses in effluents of a domestic sewage treatment plant. Water Science and Technology 76(7-8): 2195-2202, 2018

Unialgal and mass culture of Scenedesmus obliquus. Technjques. Comun Mus Argentino Cienc Nat Bernardino Rivadavia E Inst Nac Invest Cienc Nat Cienc Bot 1(9): 21-29, 1960

Motile cells in scenedesmus obliquus in outdoor mass culture. Archiv fuer Protistenkunde 140(4): 345-348, 1991

The Growth and Inorganic Nutrition of Scenedesmus obliquus in Mass Culture. Plant Physiology 29(3): 205-214, 1954

Motile cells in outdoor mass culture of Scenedesmus obliquus II. Archiv fuer Hydrobiologie Supplement 126(0): 101-108, 1998

Comparison between coagulation-flocculation and ozone-flotation for Scenedesmus microalgal biomolecule recovery and nutrient removal from wastewater in a high-rate algal pond. Bioresource Technology 259: 334-342, 2018

High rate oxidation pond for water and nutrient recovery from domestic sewage in urban areas of the tropics. Ergebnisse der Limnologie (28): 123-128, 1987

Scenedesmus obliquus zoospores in outdoor mass culture - reality or artefact?. Archiv fuer Hydrobiologie Supplementband 100(0): 37-42, 1993

Harvest of micro algae from the effluent of a sewage fed high rate stabilization pond by tilapia nilotica 1. description of the system and the study of the high rate pond. Aquaculture 23(1-4): 83-106, 1981

The harvest of microalgae from the effluent of a sewage fed high rate stabilization pond by Tilapia nilotica: Part 1: Description of the system and the study of the high rate pond. Aquaculture 23(1-4): 83-105, 1981