Bio-Energy Wastewater Treatment

Targeted and comprehensive solutions for bio-gas wastewater

Our wastewater treatment team can support bio-gas generation by helping you to assess and economically treat digester wastewater. We have solutions ranging from ammonia load reduction, to selective contaminant removal to closed-loop ZLD, and everything in-between.

Biogas Wastewater

Biogas-producing anaerobic digesters produce methane gas from organic wastes. The methane can then be used in transportation, power generation, or heating. Digesters also produce wastewater, which cannot usually be re-used directly or discharged into a public sewer.

 

Depending on the digester feed and other factors, typical wastewater issues include total suspended solids (TSS), total dissolved solids (TDS), ammonia, biological oxygen demand (BOD), and chemical oxygen demand (COD). Depending on project needs, treatment involves the application of various technologies. Options range from reducing TSS and ammonia (nitrogen), to targeted selective contaminant removal of metals (e.g. zinc), up to a comprehensive ZLD process.

wastewater aeration biogas
A wastewater aeration tank for the treatment of ammonia
biogas digestate treatment flow
Overview of a comprehensive treatment solution for digester wastewater with MLD/ZLD options (not all steps are necessarily required).

Digestate Wastewater Management

To decide on an appropriate and cost-effective treatment process, it is critical to know the wastewater chemistry in detail and understand the treatment goals. Saltworks can review water chemistry and specific project requirements so that a digester wastewater treatment process is delivered that balances simplicity, cost-effectiveness, and reliability. We can also help to inform your total plant mass and options analysis. Contact us for project reviews, water testing, pilots, and more.

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