臭氧-生物活性炭工艺预处理海水试验研究

STUDY ON OZONE AND BIOLOGICAL ACTIVATED CARBON PROCESSES PRETREATING SEAWATER

采用臭氧-生物活性炭(O3-BAC)工艺进行长期去除实际海水有机污染物试验研究。结果表明,O3-BAC工艺可有效去除海水中的有机污染物,系统运行稳定,反冲洗对BAC去除有机物影响不大。对有机污染较严重的海水,臭氧投加量3～6 mg.L-1、氧化接触时间30～60 min、水温10.5～29.0℃、BAC滤柱HRT为1 h情况下,O3-BAC工艺对TOC、DOC、CODMn、UV254以及浊度的平均去除率分别在38%、34%、55%、55%、95%以上,出水可作为反渗透膜海水淡化的进水。

BAC process was used to remove organics in seawater, study showed： O3-BAC process can effectively remove organics in seawater, and backwashing for BAC filter-was no effect on organics removal in BAC, and the nmning of this process is stable. For seriously polluted seawater by organic substance and using O3-BAC process, on the condition that dose of ozone was 3-6 mg.L-1, oxidation contact time was 30-60 min, temperature of seawater was 10.5-29.0 ℃, empty bed contact time of BAC filter was 1 h, the average removing rate ofTOC, DOC, CODMn, UV254 and turbidity was above 38%, 34%, 55%, 55% and 95% respectively.