Percolate Treatment in Activated Sludge Ecological Stabilization
Wastewater sludge ecological stabilization (WWSES) was put forward herein for the aim of sludge treatment and disposal. The study was performed over the period from May to November 2006, on a pilot scale bed with 80 m2. The bed was planted with reeds and fed with thickened sludge from Cyclic Activated Sludge Technology (CAST) process (Dry Matter Content 3％). The influent sludge load varied between 0.166 and 1.213 kg TS/m2.d, with average 0.691 kg TS/m2.d. The aim of the study was to evaluate parameters such as COD, NH4-N, NO3-N, TN and TP, in percolate water. Under the loadings of 7 tone, 10 tone and 15 tone thickened sludge per four days, average COD removals are 56.4％, 50.6％ and 47.1％, individually; total nitrogen removals are averaged 57％ –58％ and total phosphorus removals are averaged 82％. Effluent total nitrogen is mainly consisted of nitrate nitrogen. The nitrogen mass balance analysis proved that most of nitrogen was removed by nitrification and denitrification.
reed bed percolated water sludge watering
CUI Yubo ZHAO Lihui JIANG Tingliang YU Dan GUO Zhiqian
Department of Environmental Engineering, Dalian Nationalities University, Dalian 116600, Liaoning, C Shunyi Municipal Design Institute, Beijing 101300 China Department of Environmental Engineering, Jilin Architectural and Civil Engineering Institute, Changc
国际会议
2007环境科学与技术国际会议(The 2007 International Symposium on Environmental Science and Technology)
北京
英文
2007-11-13（万方平台首次上网日期，不代表论文的发表时间）