Ecological factors and requirments

In the leather production process
raw hide magazine
1. Sodium chloride which is mostly used for preservation of raw hide and skin accounts for as much as 30-40 % (related to the hide and skin green weight) of the waste volume, and increase the salt content of the effluent considerably.
Efforts to switch to other efficient long-term preserving agents have not been successful yet. Salt used in preserving hide and skin are of different type sea salt rock salt they are different in impurity. Short term preservation without salt or processing of fresh hides is only of local importance.
Remedy ecological treatment
Before processing (soaking) remove salt from raw hide and skin by intensive sweeping and dispose of separately.
Soaking float s
Soaking float make up about 10-15% of the total effluent. The floats may contain common salts, soil by blood and dung, natural fatty substances, small amounts of soluble skin protein and sometime preserving agents, wetting or enzymatic soaking auxiliaries, depending on the type of preservation of the raw stock.