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Main Title Systems Simulation of the Effects of Tertiary Treatment for Carbon, Nitrogen, and Phosphorus Removal Upon Primary Productivity, Standing Crop and Community Structure of Autotrophic and Metertrophic Communities in Receiv ing Model Streams.
Author Cairns, Jr. , John ; Dickson, K. L. ; Smrchek, Jerry ; King, P. H. ; Randall., C. W. ;
CORP Author Virginia Polytechnic Inst. and State Univ., Blacksburg. Dept. of Biology.
Year Published 1973
Report Number DI-14-31-0001-3660; OWRR-B-039-VA; W74-07337 ; OWRR-B-039-VA(1)
Stock Number PB-231 759
Additional Subjects Sewage treatment ; Carbon ; Nitrogen ; Phosphorus ; Biomass ; Filtration ; Performance evaluation ; Iron chlorides ; Models ; Streams ; Primary biological productivity ; Phytoplankton ; Chlorophylls ; Activated carbon treatment ; Precipitation(Chemistry) ; Coagulation ; Algae ; Breakpoint chlorination ; Tertiary sewage treatment ; Eutrophication ; Nutrient removal
Library Call Number Additional Info Location Last
NTIS  PB-231 759 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 24p
A controllable laboratory system was designed, composed of several model streams established under comparable environmental conditions. The streams were used in studying the effects of various conventional tertiary nutrient removal schemes upon the standing crop biomass, phytopigments, primary productivity, and community structure, of autotrophic periphyton communities. Ferric chloride coagulation-precipitation, breakpoint chlorination, and activated carbon absorption with dual media filtration was used for removal of phosphorus, nitrogen, and carbon respectively. All types of teritary treatment methods studied resulted in varying increases in the above biological parameters. These results indicate that using accepted methods for nutrient removal may not prevent algal productivity resulting in more rapid euthrophication.