Primarytreatment secondarytreatment tertiarytreatment

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ary treatment pH Removal of color, odor, metals Solid wastes Sedimentation, clarification Aerobic digestion Landfill? 7 Schork L9 ChBE 4505/4525 Schork L9 Labor‐Related Operations Direct wages & benefits (DW&B) Number of operators: Table 23.3 Supervisory & engineering salaries & benefits $60,000 / (operator/shift)‐yr Technical assistance $65,000 / (operator/shift)‐yr Control lab DW&B, $/yr = (operators/shift) (5 shifts) X (2080 hr/yr‐operator) ($/hr) 15% of DW&B 8 ChBE 4505/4525 Maintenance MW&B Supervision M&S 3.5‐5.0% of CTDC 25% of MW&B 100% of MW&B Overhead 5% of MW&B OR Total maintenance 8.05 – 11.5% of CTDC Operating Overhead 22.8% of M&O‐SW&B M&O‐SW&B = maintenance & operations salary wages and benefits Cafeteria, HR safety, purchasing, warehousing, etc. 9 Schork L9 ChBE 4505/4525 Schork L9 Property Taxes & Insurance Property taxes Insurance 1‐3% of CTDC 0.5‐1.5% of CTDC OR, combined: 2.0% of C...
View Full Document

Ask a homework question - tutors are online