Biological Anaerobic Treatment

Anaerobic wastewater treatment processes are typically used in larger municipal plants, food and beverage, pulp and paper and petrochemical industrial wastewater applications, where there is a high level of BOD and/or COD (Biological/Chemical Oxygen Demand) in the wastewater stream.

Ovivo has several pieces of equipment to aid in anaerobic digestion, some of this equipment includes digester covers (steel fixed covers, steel gasholder covers and membrane gasholder covers), sludge mixers to improve anaerobic digestion (draft tube mixers that are located on the top of a rigid digester cover, draft tube mixers that are mounted on the outside of the digester tanks and the LM™ mixer) and a Sonolyzer™ sludge disintegrator () used to lysis the cells allowing improved VS destruction and more gas production.

An anaerobic biological treatment process will typically treat high strength wastewaters to a level that will allow discharge to a municipal sewer system. With further aerobic treatment such as an SBR (Sequencing Batch Reactor) or MBR (Membrane Bioreactor) followed by RO (Reverse Osmosis), water reuse is also possible.

Wastewaters with high organic loads contain significant quantities of energy. These can be realized through anaerobic treatment which produces methane as a by-product.

• Energy efficient
• Can produce energy rich biogas for use on site or for feed back to the Grid
• Carbon Credits/Green Energy Certificates may be available for energy generated using biogas
• Carbon Finance and government backed Sustainability. Grants may be available to assist with funding new plants
• Wastewater with high organic loads and temperatures treated by compact process