白晓凤,李子富,闫园园,白雪.吹脱与鸟粪石沉淀组合工艺处理中温厌氧发酵沼液研究[J].农业机械学报,2015,46(12):218-225.
Bai Xiaofeng,Li Zifu,Yan Yuanyuan,Bai Xue.Treatment of Liquid Digestate by Stripping Combined with Struvite Precipitation[J].Transactions of the Chinese Society for Agricultural Machinery,2015,46(12):218-225.
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吹脱与鸟粪石沉淀组合工艺处理中温厌氧发酵沼液研究   [下载全文]
Treatment of Liquid Digestate by Stripping Combined with Struvite Precipitation   [Download Pdf][in English]
投稿时间:2015-07-24  
DOI:10.6041/j.issn.1000-1298.2015.12.029
中文关键词:  沼液  吹脱  粪石沉淀  磷回收  氮回收
基金项目:国家国际科技合作专项资助项目(2013DFG92620)和中央高校基本科研业务费专项资金资助项目(2302013FRF-MP-13-001B)
作者单位
白晓凤 北京科技大学
北京市工业典型污染物资源化处理重点实验室 
李子富 北京科技大学
北京市工业典型污染物资源化处理重点实验室 
闫园园 北京科技大学
北京市工业典型污染物资源化处理重点实验室 
白雪 北京科技大学
北京市工业典型污染物资源化处理重点实验室 
中文摘要:利用吹脱+鸟粪石沉淀(MAP)组合工艺处理中温厌氧发酵沼液。研究发现沼液吹脱的最佳工艺参数为:pH值为10,吹脱时间8 h,气液比2 400,并添加填料,此时沼液中氨氮去除率在90%左右。吹脱后的沼液pH值在9.2左右,在MAP沉淀法的适宜pH值附近,不需再进行pH值调节,可节约药剂成本。经MAP沉淀处理后的沼液出水氨氮和总磷去除率分别达到了95%和80%。COD和SS去除率分别在40%和32%左右。MAP沉淀出水的pH值在8.3左右,可满足生化处理的进水要求。同时,MAP沉淀处理后的出水C/N比大大提升,从0.7上升到了10,有利于后续生化系统的进一步处理。该工艺既可使沼液得到净化处理,又可回收其中的营养物质。
Bai Xiaofeng, Li Zifu, Yan Yuanyuan and Bai Xue
University of Science and Technology Beijing;Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants,University of Science and Technology Beijing;Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants,University of Science and Technology Beijing;Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants and University of Science and Technology Beijing;Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants
Key Words:Liquid digestate  Stripping  MAP  Phosphorus recovery  Nitrogen recovery
Abstract:Stripping combined with struvite precipitation (MAP) was used to treat the liquid digestate. The results showed that the best process parameters for stripping of the digestate from mesophilic digestion were as follows: the pH value was 10, stripping time was 8 h, gas-liquid ratio was 2 400, and filler was added. The removal rate of ammonia in the digestate was about 90%. The pH value of the digestate after stripping was about 9.2 and it was suitable for MAP precipitation method. The pH value regulation was not necessary, so it can save the cost of dosage. The removal rate of ammonia nitrogen and total phosphorus were 95% and 80%, respectively, after MAP precipitation treatment. The removal rates of COD and SS were 40% and 32%, respectively. The pH value of the effluent after MAP precipitation was about 8.3, which can meet the requirements of biochemical treatment. Meanwhile, C/N ratio of the effluent was greatly improved, which was increased from 0.7 to 10, and it was conducive to further treatment of the follow-up biochemical system. The process not only makes the digestate be processed, but also can recover the nutrients.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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