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FIGURE 2
Effluent Total Suspended Solids (TSS) and Effluent cBOD

Deer Island's final treated effluent has met or surpassed all secondary treatment numerical limits in its NPDES permit.
figure 1 effluent tss
TOTAL SUSPENDED SOLIDS (TSS): A measure, usually in reference to wastwater, of the tiny particles of material such as mud, sand and organic debris that are suspended in water and can settle down over time. The monthly limit for TSS is 30 (mg/l).

CARBONACEOUS BIOCHEMICAL OXYGEN DEMAND (cBOD): A measure of oxygen-consuming matter in wastewater. In MWRA effluent, lower levels of cBOD are preferable. The monthly limit for cBOD is 25 mg/l.

 

Updated July 7, 2008 1:16 PM