Abstract:

Internal circulating BAF biological oxidation technology has been used in the alkaline residue equipment in PetroChina Lanzhou Petrochemical Co. for the pretreatment of alkaline residue. The whole system is capable for meeting the requirement for the present alkaline residue treatment capacity in Lanzhou Petrochemical Plant. Thus,the problems in alkaline residue treatment in that plant has now been solved. The discharge of sludge from the flushing sedimentation tank in time is very helpful for improving the quality of backwashing water supply,upgrading the efficiency of the backwashing system,and,furthermore,upgrading the effluent effect of internal circulating BAF. On the premise that the effluent water quality meets the designed requirements,the alkaline residue treatment capacity by the operation of the first 9 groups(12 groups altogether) of internal circulating BAF tank can reach 8.3 m³/h, whose accounting cost is CNY38 per ton.

Key words: internal circulating BAF, alkaline residue, sulfide, sedimentation tank, backwashing

摘要：

中石油兰州石化公司碱渣装置采用内循环BAF生物处理技术预处理碱渣。整套系统能够满足兰州石化厂现有碱渣处理量的需求，解决了该厂碱渣处理难题。对内循环BAF反冲洗沉淀池进行及时清淤，能够改善反冲洗给水水质、提升反冲洗系统的效率，进而有助于提高内循环BAF的出水效果。在出水水质满足设计要求的前提下，当前9组（共12组）内循环BAF池运转对碱渣的处理量可达到8.3 m³/h，核算运行成本为38元/t。

关键词: 内循环BAF, 碱渣, 硫化物, 沉淀池, 反冲洗

CLC Number: 

• X703.1