SONG Xin-xin,MIN Hai-hua,DING Xi-ming.Treatment of Food Waste Biogas Slurry by Process of Pretreatment, Two-stage A/O, UF, Fenton Advanced Oxidation and BAF[J].China Water & Wastewater,2021,37(8 8):143-142.
Treatment of Food Waste Biogas Slurry by Process of Pretreatment, Two-stage A/O, UF, Fenton Advanced Oxidation and BAF
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
8 8
Page:
143-142
Column:
Date of publication:
2021-04-17
- Keywords:
- food waste biogas slurry; Fenton advanced oxidation; BAF
- Abstract:
- The biogas slurry produced by dehydration of food waste after anaerobic fermentation has complex pollutant composition, great fluctuations in water quality, high concentration of organic matter and ammonia nitrogen, large amount of impurities and oil content, which is difficult to treat. Taking the biogas slurry treatment of a domestic food waste comprehensive treatment plant as an example, the water quality characteristics of food waste biogas slurry is elaborated. Following the principle of “step-by-step solution, easy first and then hard” to remove multiple pollutants, the combined process of pretreatment (oil separation sedimentation, air floatation, and fine membrane screen), two-stage A/O, UF, Fenton advanced oxidation, and BAF is adopted to treat the food waste biogas slurry, thus ensuring the indexes of COD, BOD5, ammonia nitrogen, TN, TP, SS and animal and vegetable oils meet the discharged standards of local sewage treatment plant. The combined process has the advantages of stable effluent water quality, less investment, less land occupation, and no concentrated liquid problem generated by the traditional membrane method, which could provide reference for the construction of similar projects.
Last Update:
2021-04-17