| COD/SO42-值对硫酸盐还原率的影响 |
| 摘要点击 2427 全文点击 2381 投稿时间：1999-11-13 |
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| 中文关键词 UASB 硫酸盐 去除率 硫酸盐还原菌 |
| 英文关键词 UASB sulfate removal rate sulfate reducing bacteria |
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| 中文摘要 |
| 研究利用 UASB反应器考察了 COD和硫酸盐浓度的比值对硫酸盐还原的影响 ,同时分析了硫酸盐还原菌和产甲烷菌对COD的竞争情况 .发现在 HRT为 3.8h,SO42- 负荷为 6～7kg·( m3· d)-1,SO42- 浓度为 1000mg·L-1 条件下 :1在 COD不足时 ,SRB与 MPB在竞争中占微弱优势 ;对于产甲烷活性比较好的厌氧污泥要经过较长的时间 ,SRB才能确立优势菌种的地位 .2 COD/ SO42- 比值决定了 SO42- 的去除率 .比值等于2时 ,SO42- 的还原率在 95%以上 ;当比值为 1.5时 ,SO42- 还原率为 75% ;当比值为 1时 ,SO42-的还原率为 60 % . |
| 英文摘要 |
| In this paper,a UASB reactor was used to study the effect of COD/SO42- ratio to sulfate removal rate.The competition between sulfate reducing bacteria(SRB)and methane producing bacteria(MPB)was also studied.when the condition of hydraulic retention time(HRT) was 38h,SO42-load rate was 6～7kg·(m3·d)-1,SO42- was 1000mg·L-1,SRB was at the potential of biomass with the COD was not enough at the end of test;the removal rate of SO42- was determined by COD/SO42- ratio,the removal rate of SO42- was more than 95%,75% and 60% when the ratio was 2,15 and 1,respectiviely. |
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