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Considering a Pressure Sewer? <br /> EFFLUENTANO THE TREATMENTFACILITy <br /> STEP effluent... Grinder pump effluent... <br /> •is primary treated and has superior quality •is a macerated slurry of all solids and has poor quality <br /> B005=130 mg/L,TSS=30 mg/L(w/effluent filter),G&O=15 mg/L BOD5=450 mg/L,TSS=500mg/L,G&O=160 mg/L <br /> •has better solids management:produces 3 pounds per person/year` • has no solids management:produces 50 pounds per person/year' <br /> •is suitable for subsurface disposal where practical •is unsuitable for direct subsurface disposal <br /> •will require sulfide control when used in conjunction with •will require sulfide control when used in conjunction with <br /> conventional gravity sewers(sulfide generation proportional conventional gravity sewers(sulfide generation proportional <br /> to BODS of waste stream) to BODS of waste stream) <br /> •allows smaller,lower cost treatment facilities •requires larger,more costly treatment facilities <br /> •lends itself well to low-maintenance treatment such as packed bed •requires substantial pretreatment for use with sand filters <br /> filters and subsurface disposal and subsurface disposal <br /> OPERATION AND MAINTENANCE <br /> STEP systems... Grinder pump systems... <br /> •do not require line pigging •require line pigging <br /> •use non-corrodible,lightweight,long-lasting pumps •use corrodible,heavy,shorter lived pumps <br /> •have large emergency storage capacity •have little or no emergency storage capacity <br /> •have fewer service calls •have longer and more frequent service calls <br /> •minimize electrical demands(small motors) •have greater electrical demands <br /> •"Wastewater Alternatives for Your Community"video <br /> 02003 Or..c SVM-0 Inc. <br /> SHO-US-1 <br /> Rev.1.01©9@3 <br /> Page 2 of 2 <br />