Plant wastewater treatment example

Chemical dyeing plant that produces strong alkaline waste liquid containing heavy metals, In the past, this plant used 100% chemical treatment.

There was an offensive odor, and more than 4 tons of sludge　accumulated enough to walk on the surface every day ... (The photo shows the current state. There is almost no odor now.)

During processing, pathogens are not scattered outside. After several stages of processing ...

Exclusion rate BOD : 99.6% COD : 96.6% Total nitrogen : 95.8% Excess sludge 0t pH 13 → 6.9

Now we pass Japan's strictest water quality inspection every month and are able to process it so that it can be released to the river.

A factory that cleans laundry from the hospital to which body fluids including pathogens adhere. It is a place where water recycling is necessary because it is difficult to secure a large amount of water.