Industrial wastewaters polluted with lubricants, grease and oil products are generated as a result of production plant activities in the following industries: metal fabrication, machinery, oil production, oil refinery, food manufacturing industry etc.
Storm wastewater, incl. surface and melt waters, water flushed from roads within factory premises, also contain petroleum products.
The challenges of industrial and storm wastewater purification:
Low efficiency of existing treatment technologies (e.g., residual concentration of petroleum products after treatment up to 30 mg/l vs. advisable 0.05-1 mg/l).
High CAPEX and OPEX incurred in terms of existing treatment technologies.
After implementation of solutions
The oil-contaminated wastewaters are treated with activator and Biomicrogels® BMG-C2 flocculator. The water treated with agents is then supplied through static mixer for better mixing and distribution of the flocculator through the wastewater volume. After that, the wastewater is supplied to flotation plant where pollutants are removed as flotation froth owing to physical and chemical treatment method.
They catch any mineral and vegetable oils, animal fats, and oil and petroleum products in water effectively, based on sweep- coagulation process.
After separation of oil-water mixture both treated water and removed petroleum products can be returned to the process cycle and re-used. Biomicrogel® BMG-P2 flocculants are well compatible with almost all flocculants based on inorganic salts of polyvalent metals cleaning water from suspended particles.