RETENTION BASIN CONTROL OF COMBINED SEWER OVERFLOWS

FISH KILLS, WHICH WERE NUMEROUS PRIOR TO CONSTRUCTION OF THE FACILITY, CEASED AND THERE WAS AN INCREASE IN THE ABUNDANCE OF POLLUTION SENSITIVE ORGANISMS IN THE STREAM BELOW THE BASIN. AVERAGE ANNUAL REDUCTION OF THE BIOCHEMICAL OXYGEN DEMAND (BOD) WAS 27 PERCENT AND COLIFORM REDUCTION AVERAGED 72 PERCENT. HOWEVER, DURING THE PERIOD FROM JUNE THROUGH OCTOBER 1969, PRODUCTION OF ALGAE IN THE BASIN CAUSED THE EFFLUENT BOD TO CONSISTENTLY EXCEED THAT OF THE INFLUENT. IN ADDITION TO THE OXYGEN DEMAND ON THE STREAM, PRODUCTION OF ALGAE MAY BE OBJECTIONABLE AT SOME INSTALLATIONS FOR AESTHETIC REASONS. SLUDGE ACCUMULATION WAS SIGNIFICANT IN THE BASIN AND MUST BE TAKEN INTO ACCOUNT IN DESIGN OF SIMILAR FACILITIES. SUGGESTIONS FOR FUTURE DESIGNS OF RETENTION BASINS ARE INCLUDED.

  • Supplemental Notes:
    • APP
  • Corporate Authors:

    Environmental Protection Agency

    Dallas, TX  United States  75202
  • Publication Date: 1970-8

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 97 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00204505
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 22 1973 12:00AM