[Effect of Alkaline Sludge Fermentation Products on the Nitrification Process and Performance].

• DOI: 10.13227/j.hjkx.201909017
• Publication Date: 2020-03-08
• Authors: Shengjie Qiu; Jin-Jin Liu; Xiyao Li; Yongzhen Peng
• Keywords: Oxidizing agent

The aim of the present study was to investigate effect alkaline sludge fermentation products as a carbon source on nitrification process and performance. During operation biological nitrogen removal (BNR) system with mixture source, activities ammonia-oxidizing bacteria (AOB) nitrite-oxidizing (NOB) were inhibited at beginning. After 16 days, activity AOB began recover rapidly, but NOB still inhibited. specific nitrate production rate (SNaPR, N/VSS) decreased from 0.1791 g·(g·d)-1 0.0078 g·(g·d)-1. At same time, nitrite accumulation increased 8.12% 91.42% remained stable. separated into liquid sediment. changes in by adding different types investigated. results showed that experimental group fed liquid. SNaPR an initial 0.1793 0.1510 0.1617 g·(g·d)-1, respectively. In sediment, increased. rose 0.1864 Therefore, can be when are used process. addition, short-range realized, which is beneficial accelerating reaction speed saving investment this type source.