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SH wet desulfurization process introduces that the gas after the blower enters the desulfurization tower and comes into countercurrent contact with the desulfurization liquid sprayed from the top of the tower to absorb H2S and HCN in the gas. Gas desulfurization section for H2S removal. The desulfurization liquid that has absorbed H2S and HCN flows out from the bottom of the tower, enters the sedimentation tank through the liquid seal tank, overflows into the ash tank for secondary precipitation, and then the upper liquid is fully flowed into the circulation tank and pumped back to the desulfurization tower through the circulation pump. After the desulfurization liquid is absorbed for a period of time, when the pH is <11, new desulfurization liquid is added to the ash tank. The sediments from the sedimentation tank and the ash tank are continuously discharged from the bottom into the concentration tank through stirring, and are concentrated, separated and dehydrated statically. Coke oven gas processing capacity 27900m3/h ； Removal efficiency 85% ； The circulation volume of deflow fluid is 50m3/hour ； The pH value of the dewatering liquid is 10-12, and the gas after the desulfurization tower contains hydrogen sulfide <0.2 grams g/m3. Wastewater treatment system process introduction on September 23, 2008 1. Wastewater composition: ①Remaining ammonia water 14t/h ②Process water in the production process 21t/h Treatment capacity 35 t/h5 2. After steaming ammonia (ammonia and nitrogen are reduced from 5000 to 1000mg/t), the remaining ammonia water enters the oil removal tank (removal of heavy oil). After oil removal, it enters the anaerobic tank through flotation. The anaerobic tank enters the anoxic tank through the 3# water distributor to remove NH5 -N overflows into the aerobic tank. The activated sludge absorbs organic matter such as phenol cyanide in the water under aerobic conditions and then enters the secondary sedimentation tank. After sedimentation and separation, the upper clear liquid overflows into the flocculation sedimentation tank. The qualified water after secondary separation is pumped for coal washing and coke quenching. 3. After treatment, the water quality is NH3-N＜15mg/t, phenol＜0.5 mg/t COD＜100 mg/t and other evaporated ammonia wastewater and process wastewater → oil removal tank → flotation tank → anaerobic tank → anoxic tank → aerobic tank → secondary sedimentation tank → flocculation tank → coke quenching tank, coal washing process wastewater