||Study of Physical, Settling, and Thickening Characteristics of a Sludge.
Greene., M. H. ;
||Pacific Northwest Environmental Research Lab., Newport, Oreg. Marine Science Center.;Western Interstate Commission for Higher Education, Boulder, Colo. Resources Development Internship Program.;Portland State Univ., Oreg. Urban Studies Center.
Test methods ;
Sewage treatment ;
Physical properties ;
Sea water ;
New York ;
Suspended solids ;
Nassau County(New York)
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
Tests were conducted to obtain the physical characteristics of sludge obtained from Nassau County's Bay Park sewage treatment plant, Long Island, New York. The settling characteristics of the sludge in seawater were determined by modified pipette analysis as a function of suspended solids concentration, salinity, and depth of settling. The sludge was subjected to tests to determine its thickening capability. The bulk specific gravity of the sludge was determined. The specific gravity of the liquid phase was constant at 1.000 g/cc. For different samples the precentage solids by weight varied from .8 to 2.2%. The specific gravity of the solids varied from 1.53 to 1.62 g/cc with corresponding volatile solids from 70.3 to 61.4%. The maximum solids concentration obtainable in laboratory tests was 5.5%.