Wastewater contaminated from organic substances and salts
What about solutions?
Wastewaters of food industry stand out for high contents of organic substances (as sugars, carbohydrates, starches, proteins) or salts. The first ones, with a high content of COD (Chemical Oxygen Demand), are efficaciously purified by biological processes, as UASB (Upflow Anaerobic Sludge Blanket), MBR (Membrane Bio-Reactors), SBR (Sequencing Batch Reactors), that eliminate pollutants through digestion of carbon. The biogas yielded during the treatment can be employed as energy source.
The best system for saline solutions purification is the evaporation, able to produce until to 70-90% of distilled water and to 30-10% of concentrate.
The creation of vacuum in ebullition chamber and the use of multiple effects systems guarantee energy efficiency of plant, lowering operating costs.