Drying Technology
There are two types of leather sludge, one is sludge such as leather shavings and minced meat, which can be handed over to the gelatin factory for disposal and must not enter the food chain. The other is the sludge obtained after treatment of tannery wastewater. Biochemical sludge with low chromium content and high-concentration chromium sludge obtained by alkaline precipitation.
The Application Leather Sludge
The Japanese-invested company is a manufacturer of original leather, which is the material for automobile and seat. There is waste water left from their manufacturing. They bring their liquid sludge to arrange drying test in our factory. The 1.7%DS leather sludge.
Filter press to make it to be 20%DS:
The sludge cake is firstly sliced into spaghetti shape.
After drying, we checked the dried sludge is 85%DS with granular shape.
