摘要
在新型后置反硝化工艺中验证了石油烃类废水治理的可行性并进一步探究p H的影响。结果表明新型后置反硝化工艺能够有效处理石油含烃类废水,稳定运行期COD,氨氮和烃类物质的去除率分别为85.2%,84.1%和86.3%。p H对COD和含烃类物质去除影响较大,而对氨氮去除影响小,并且p H=8是石油含烃类物质废水治理的最佳p H值。当p H值由6升高至8时,NO-3-N出水含量由1.9 mg/L下降至0.98mg/L,而胞内聚合物聚羟基烷酸酯(PHA)的含量却由4.85 mg/g升高至5.62 mg/g,PHA含量升高利用其在好氧和缺氧期分解产能用于反硝化。而过高p H不利于新型后置反硝化工艺烃类物质去除,脱氮和胞内聚合物的合成和积累。
The feasibility of petroleum hydrocarbon wastewater treatment was verified in the new post-denitrification process and the impact of p H was further explored. The results showed that the new type of post-denitrification process could effectively treat petroleum hydrocarbon-containing wastewater and the removal rates of COD,ammonia nitrogen and hydrocarbon in stable operation period were 85. 2%,84. 1% and 86. 3% respectively. p H had a great effect on the removal of COD and hydrocarbon-containing substances,but little effect on the removal of ammonia nitrogen,and p H = 8 was the optimum p H for the treatment of petroleum hydrocarbon-containing wastewater. When p H increased from 6 to 8,the effluent NO3-N content decreased from 1. 9 mg/L to 0. 98 mg/L,while the intracellular polyhydroxyalkanoate( PHA) content increased from 4. 85 mg/g to 5. 62 mg/g and the increase of PHA content helped it to decompose in aerobic and a NOxic phases for denitrification. The high p H was not conducive to the new post-denitrification process of hydrocarbon removal,nitrogen removal and intracellular synthesis and accumulation of polymers.
作者
刘畅
何国鸿
梁晶晶
LIU Chang;HE Guohong;LIANG Jingjing(Petrochina Southwest Oil & Gas Field Company Safety,Environment & Technology Supervision Research Institute Chengdu 610041)
出处
《工业安全与环保》
2018年第6期42-45,共4页
Industrial Safety and Environmental Protection
基金
"十三五"国家科技重大专项(2016ZX05052)
关键词
后置反硝化
石油废水
PH
脱氮
post - denitrification
petroleum
wastewater
pH denitrification