炼厂污水处理场恶臭气体治理实践

摘要

Sewage treatment plants in petrochemical enterprises are important odor pollution sources which need to be controlled.The odor gases in sewage treatment plants are divided into two strands (namely high concentration exhaust gas and low concentration exhaust gas)based on the characteristics of odor pollution. The high concentration exhaust gas is chemically cleaned and then mixed with the low concentration exhaust gas into the combined biological deodorization device for purification treatment,and the treated exhaust gas is subjected to advanced treatment by an activated carbon adsorption device.The results showed that the composite technology had obvious purifying effect on the odor treatment of sewage treatment plant,in which the odor concentration was less than 100,the non-methane total hydrocarbon was less than 6.5 mg/m3 ,the mass concentration of hydrogen sulfide was 0.004 mg/m3 ,which were much lower than the national standards.%炼化企业污水处理场属于重要的恶臭污染源，亟需进行污染治理。根据污水处理场恶臭污染特点，分为高浓度废气和低浓度废气，高浓度废气经化学洗涤后与低浓度废气分别进组合生物除臭装置进行净化处理，处理后的废气进活性炭吸附装置进行深度处理。实践结果表明：该复合技术对污水处理场恶臭治理具有明显的净化效果，其中臭气浓度低于100，非甲烷总烃质量浓度不超过6.5 mg／m3，硫化氢质量浓度为0.004 mg／m3，均远低于国家标准。