Method for continuous treatment of water containing organic matter by enzyme treatment

摘要

The method comprises a step of continuous biological water treatment followed by a filtration step, and an enzymatic treatment step carried out between the biological treatment step and the filtration step. The enzyme treatment step is carried out by enzymes attached to a three-dimensional support (30). The enzyme degrades a portion of organic matter contained in the water from the biological treatment step. The enzyme treatment step follows the biological treatment step and precedes the step of filtering or follows the filtration step and precedes the biological treatment step. The method comprises a step of continuous biological water treatment followed by a filtration step, and an enzymatic treatment step carried out between the biological treatment step and the filtration step. The enzyme treatment step is carried out by enzymes attached to a three-dimensional support (30). The enzyme degrades a portion of organic matter contained in the water from the biological treatment step. The step of biological treatment is anaerobic. The enzyme treatment step follows the biological treatment step and precedes the step of filtering or follows the filtration step and precedes the biological treatment step. The filtering step implements a filtering unit having a breaking capacity of 0.01 microns to 1 mm, where filtering membranes comprise drums, granular filters or filter disks. The enzymes are fixed on the support directly or by polymer immobilization. The contact time of water with the enzymes in the enzyme treatment step is 10 minutes. The method further comprises a step of recirculating a portion of the water from the filtration step to the biological treatment step, and a step of cleaning up the filtration unit. An independent claim is included for an installation for treating water.