In the waste gas treatment technology, wet method of the CS2 adsorption by activated carbon of H2S removal is the most efficient.

The waste gas treatment adopts alkali absorption method to remove H2S and the CS2 adsorbed by activated carbon. The features are its greater operation economy than the combustion method and can also be performed with low-concentration waste gas with high efficiency. The CS2 recycling rate can reach beyond 75%.

There are two parts of the treatment, high and low concentrations, in the waste gas. One is acid bath deaeration, the high-concentration H2S waste gas is exhausted from the acid bath storage and the spinning machine. The other part is from the second bath tank, drafting machine, cutter, liquid workshop and villus trough, which contain high CS2. The waste gas with high H2S needs to go through three alkali washes, and then enter the washing tower with CS2 highly-contained waste gas for rear treatment.