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Land‐Treatment Systems: Design and Performance with Special Reference to Reed Beds
Author(s) -
BAYES C. D.,
BACHE D. H.,
DICKSON R. A.
Publication year - 1989
Publication title -
water and environment journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 37
eISSN - 1747-6593
pISSN - 1747-6585
DOI - 10.1111/j.1747-6593.1989.tb01440.x
Subject(s) - environmental science , effluent , environmental engineering , biochemical oxygen demand , sewage , substrate (aquarium) , waste management , chemical oxygen demand , sewage treatment , engineering , ecology , biology
The principles of design of a land treatment system are explained on the basis of determining the land area requirements of particular constituents in terms of the supply rate and assimilative capacity. Illustrative data are provided for the design and performance of slow‐rate and overland flow systems. The paper includes a comprehensive report on the design and performance of pilot studies carried out on a reed‐bed treatment system at Valleyfield, Fife, Scotland. This provides valuable insight into the choice of the bed substrate and the problems of reed establishment. Of the media tested, coarse pulverized fuel ash appeared to be promising in terms of its hydraulic conductivity and reduction in biochemical oxygen demand. For a domestic sewage of typical strength, a bed area of 5 m 2 per population equivalent yielded an effluent having a BOD of less than 20 mg/1, but did not provide conditions which were conducive to significant nitrogen removal.