环境科学学报
環境科學學報
배경과학학보
ACTA SCIENTIAE CIRCUMSTANTIAE
2001年
1期
79-83
,共5页
亚硝化/反亚硝化%两段SBR法%味精废水
亞硝化/反亞硝化%兩段SBR法%味精廢水
아초화/반아초화%량단SBR법%미정폐수
两段SBR法处理经稀释的味精废水有良好的有机质降解和脱氮效果.整个生物处理过程可分为碳氧化阶段和三个亚硝化/反亚硝化阶段.碳氧化阶段主要是有机质的降解和曝气吹脱除氮,随后通过亚硝化/反亚硝化反应实现生物脱氮和有机物的降解.SBR Ⅰ碳氧化阶段废水中有机质浓度较高,在降解过程中消耗废水中的溶解氧,竞争性抑制了亚硝化反应的发生.而亚硝化/反亚硝化反应的形成是由于游离氨(FA)对硝酸细菌的抑制而形成的.
兩段SBR法處理經稀釋的味精廢水有良好的有機質降解和脫氮效果.整箇生物處理過程可分為碳氧化階段和三箇亞硝化/反亞硝化階段.碳氧化階段主要是有機質的降解和曝氣吹脫除氮,隨後通過亞硝化/反亞硝化反應實現生物脫氮和有機物的降解.SBR Ⅰ碳氧化階段廢水中有機質濃度較高,在降解過程中消耗廢水中的溶解氧,競爭性抑製瞭亞硝化反應的髮生.而亞硝化/反亞硝化反應的形成是由于遊離氨(FA)對硝痠細菌的抑製而形成的.
량단SBR법처리경희석적미정폐수유량호적유궤질강해화탈담효과.정개생물처리과정가분위탄양화계단화삼개아초화/반아초화계단.탄양화계단주요시유궤질적강해화폭기취탈제담,수후통과아초화/반아초화반응실현생물탈담화유궤물적강해.SBR Ⅰ탄양화계단폐수중유궤질농도교고,재강해과정중소모폐수중적용해양,경쟁성억제료아초화반응적발생.이아초화/반아초화반응적형성시유우유리안(FA)대초산세균적억제이형성적.
The dilute N-rich monosodium glutamate(MG)wastewater was treated by two-stage SBR process. The process can be divided into carbon oxidation stage end three shortened nitrification/denitrification stages. The pathway of nitrogen removal from N-rich MG wastewater was proved to be via stripping with carbon oxidation stage end shortened nitrification/denitrification subsequently. In the carbon oxidation stage,DO was consumed by high concentrations of organic compound so that nitrification was repressed, Inhibition of nitrite oxidation by free ammonia(FA)resulted in the formation of shortened nitrification/denitrification process.