Biosolids/Sludge and Residuals Management

 D&B has provided biosolids consulting services to numerous clients such as the Suffolk County Department of Public Works and Port Washington Water Pollution Control District.

• Facility Review and Evaluation
• Pilot Studies
• Biosolids Management Plans
• Detailed Design
• Dewatering/Drying Systems
• Biological and Chemical Stabilization Processes
• Reuse/Disposal

Dvirka and Bartilucci Consulting Engineers (D&B) is a leader in the analysis of options available for sludge and residuals processing and disposal. The firm has handled sludge management projects for plants ranging in size from 1.0 gallon to 350 million gallons per day. Thickening processes include gravity thickeners, centrifuges, and belt filters. Dewatering systems have comprised centrifuges, belt filter presses, and plate and frame presses.

D&B has handled numerous advanced treatment plants, which include multimedia and sand filters for enhanced solids removal, nitrification for reduction of organic loading on receiving stream and denitrification and phosphate removal for nutrient control.

Stabilization processes have included anaerobic and aerobic digestion, chemical stabilization and composting. Drying systems consist of indirect steam dryers, flash dryers, and pelletization in rotary dryers. Thermal reduction has been accomplished with multiple hearth furnaces, and fluidized bed furnaces, as well as co-combustion with refuse in mass burn furnaces.

Beneficial reuse or disposal of sludge and residuals depends on sludge and residual quality, product developed and the availability of markets. Options include land application, land reclamation, landfill cover, soil amendment products, and landfill.

D&B is a full-service environmental engineering firm that has the experienced personnel on staff to conduct the facility review and complete an evaluation document and outline alternatives. If warranted by the data collected, D&B will conduct pilot studies on particular equipment or systems to determine feasibility selection and/or future Operation and Maintenance (O&M) costs.

D&B’s project managers and personnel are experienced in all engineering disciplines that are required to complete the detailed design of the selected improvements or additions. D&B’s environmental permitting division can handle all aspects of the project from local, state and national perspectives.

D&B specializes in construction-related services including resident engineering inspection, construction management, review of shop drawings, preparation and updating of schedules, O&M manuals, and start-up and training services.

For more information on D&B’s Wastewater Management Services, please contact Executive Vice President, Steven A. Fangmann, P.E., at (516) 364-9890 x 3005, or Senior Vice President, Joseph H. Marturano at (516) 364-9890 x 3008.