油田生活污水处理系统职业病危害控制效果评价

Effect Evaluation of Hazard Control on Occupation Disease of Sewage Treatment System of Oil Field

目的分析、污水处理过程中产生的职业病危害因素,评价职业病危害防护措施及其效果。方法采用劳动卫生学现场调查、现场检测职业病危害因素及实验室检验等手段。结果污水中有机物厌氧分解产生的氨气(3.76mg/m3)、硫化氢(8.2mg/m3)、二氧化氮(0.02 mg/m3);污水消毒用二氧化氯(0.19 mg/m3)、二氧化氯发生器反应过程中产生的氯化氢及盐酸(3.2 mg/m3)、氯气(0.09 mg/m3)、高压配电室产生工频电场的最高值450(V/m)均未超过国家规定的职业接触限值;在污水提升、污泥脱水过程中机械设备运行产生噪声污水处理工噪声40h等效声级为81.9 d B(A);污泥脱水工噪声40h等效声级为80.6 d B(A),均未超过规定的职业接触限值。结论生产线存在氨气、硫化氢、氯气、噪声照度等项目属于严重的职业病危害因素,可通过相关防护措施进行预防。

Objective To analyze the hazard factors of occupation disease produced in the process of wastewater treatment and to evaluate the protective measures of occupation disease harm and their effect . Method labor hygiene on-site investigation , site detection of occupational hazard factors and laboratory tests and other means were applied .Results Anaerobic ammonia （ 3 .76 mg/m^3 ） produced by the de-composition of organic wastewater , hydrogen sulfide （8.2mg/m^3 ）, nitrogen dioxide （0.02 mg/m^3 ）;chlorine dioxidedisinfection for wastewater （0.19 mg/m^3 ）, hydrogen chloride and hydrochloric acid （3.2 mg/m^3）, chlorine（0.09mg/m^3） produced in the reaction process of chlorine dioxide generator , the highest value of 450 （ V/m） of the power frequency electric field generated by the high voltage power distribution room , all did not exceed the limiting value of occupation contact of provisions of the state;the 40 H noise equivalent sound level in the upgrading of sewage , sludge dewatering operation of machinery and equipment produced in the process of sewage treatment is 81.9 dB （A）;40h noise equivalent sound level of sludge dewatering engineering is 80.6 dB （40H A）, both did not exceed the limits specified for occupation contact .Conclusion the existence of noise intensity projects in production line of ammonia , hydrogen sulfide , chlorine belong to the factors of serious occupation disease harm and can be prevented by the related protection measures .