DAIYang-ye,ZHUJian,SHANGJia-ji,et al.Operation Effect of IFAS Process in Upgrading and Reconstruction of Wastewater Treatment Plant[J].China Water & Wastewater,2025,41(9):66-72.
IFAS工藝用于污水處理廠提標(biāo)改造的運(yùn)行效果分析
- Title:
- Operation Effect of IFAS Process in Upgrading and Reconstruction of Wastewater Treatment Plant
- 關(guān)鍵詞:
- 提標(biāo)改造; 填料; 固定生物膜-活性污泥工藝; 生物脫氮; 微生物菌群
- Keywords:
- upgrading and reconstruction; filler; fixed biofilm-activated sludge process; biological nitrogen removal; microbial community
摘要:- 某污水處理廠采用固定生物膜-活性污泥（IFAS）工藝對(duì)原有的AAO工藝進(jìn)行強(qiáng)化脫氮處理（投加固定填料），出水水質(zhì)執(zhí)行《太湖地區(qū)城鎮(zhèn)污水處理廠及重點(diǎn)工業(yè)行業(yè)主要水污染物排放限值》（DB 32/1072—2018）中表2標(biāo)準(zhǔn)。對(duì)提標(biāo)改造后的運(yùn)行效果進(jìn)行分析，并分別測(cè)定活性污泥和生物膜的硝化和反硝化效能，發(fā)現(xiàn)好氧池中填料表面生物膜的硝化速率是活性污泥的1.71倍，表明投加固定填料后硝化能力顯著提高。采用Illumina MiSeq高通量測(cè)序技術(shù)分析系統(tǒng)中的微生物群落結(jié)構(gòu)，發(fā)現(xiàn)在門水平上主要富集了Proteobacteria、Bacteroidota、Actinobacteria及Chloroflexi，在屬水平上主要富集了Thauera、Ferruginibacter、Thermomonas、Rhodobacter、norank_f__Caldilineaceae和norank_f__Saprospiraceae。對(duì)污泥進(jìn)行微生物菌群LEfSe線性判別分析，發(fā)現(xiàn)填料表面生物膜內(nèi)富集了大量脫氮功能菌，固定填料強(qiáng)化了硝化和反硝化作用。
Abstract:- Fixed biofilm-activated sludge (IFAS) process was applied to strengthen nitrogen removal of the original AAO process in a wastewater treatment plant. The effluent quality reached the criteria specified in the Discharge Standard of Main Water Pollutants for Municipal Wastewater Treatment Plant & Key Industries of Taihu Area (DB 32/1072-2018). The operation effect after the upgrading and reconstruction was analyzed, and the nitrification and denitrification efficiencies of activated sludge and biofilm were measured respectively. It was found that the nitrification rate of biofilm on the surface of the filler in the aerobic tank was 1.71 times of activated sludge, indicating that the nitrification capacity was significantly improved after the addition of fixed filler. The microbial community of the system was analyzed by Illumina MiSeq high-throughput sequencing technology. Proteobacteria, Bacteroidota, Actinobacteria and Chloroflexi were mainly enriched at the phylum level, and Thauera, Ferruginibacter, Thermomonas, Rhodobacter, norank_f__Caldilineaceae and norank_f__Saprospiraceae were mainly enriched at the genus level. The microbial community of sludge was analyzed by LEfSe linear discriminant analysis. It was found that a large number of nitrogen removal functional bacteria were enriched in the biofilm on the surface of the filler, and the fixed filler enhanced nitrification and denitrification.
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