两级串联生物稳定塘处理乐果废水初探

采用厌氧水解（酸化）塘－好氧塘，兼性塘－好氧塘，好氧塘－地氧塘三种工艺分别对乐果废水进行了处理，试验结果表明，第一种工艺处理效果优于其它两种工艺。在本试验条件下，其ＣＯＤ，ＢＯＤ５，乐果的平均去除率分别为７４．３％，８５．８％和９１．０％，平均出水ＣＯＤ在２４０ｍｇ／Ｌ左右。通过综合分析得出，厌氧水解（酸化）塘－好氧塘工艺处理乐废水比普通生物稳定塘的水力停留时间短，处理效果稳定，其机理可能是幅地水

STUDY ON THE TREATMET FEASIBILITY OF ROCOR WASTEWATER IN TWO-STAGE BIOLOGICAL STABILIZATION POND

Based on the flowing simulating test, three technological flowage including apaerobic hydrodytic Pond-aerobic (AH-A) pond,facufative, pond,aerobic (F-A ) pond and aerobic (A- A) pond-aerobic pend are used to treat Rogor wastewatpr.The results shook that the technology Of AH-A is superior to the others. When the hydraulic detention time in anaerobic hydrodytic pond is five hours and that in the aerobic pond is three days, the rereoval efficiencies Of COD,BOD5 and Rogor are 74. 7%, 85. 8% and 91. 0%, respectively. The effluent concentration of COD is about 240 mg/L.Through a comprehensive analysis on the experimental results,it is obtained that the detention time in AH-A pond is shorter than that in ordinary biological stabilization ponds in treating Rogor wastewater,and the treatment efficiency is stable The fundamental principle may be that while some organic compounds are removed some unsolvable organic compounds are also transformed into soluable compounds in the anaerobic hydrodytic pond,which creats favourable conditions for the. following treatment in the aerobic .pond and shortens the reaction time.