一体化工艺处理厌氧消化猪粪。
Integrated process for anaerobically digested swine manure treatment.
机构信息
State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, National Engineering Laboratory for High-concentration Refractory Organic Wastewater Treatment Technologies (NELHROWTT), East China University of Science and Technology, Shanghai 200237, China; Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, St. Paul, MN 55108, USA.
Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, St. Paul, MN 55108, USA.
出版信息
Bioresour Technol. 2019 Feb;273:506-514. doi: 10.1016/j.biortech.2018.11.050. Epub 2018 Nov 14.
An integrated three-step process was proposed for the treatment of the anaerobically digested swine manure (ADSM). The flocculation and struvite precipitation were used as the pre-treatment to remove the particles and reduce phosphorus to balance the condition for the algae growth. In the biological step, the 40% group (2.5× dilution) represented the optimal cultivation condition for the A + B co-cultivation, with the highest biomass concentration of 2.325 ± 0.16 g/L and performed well with nutrients removal (COD: 9770 ± 184 mg/L; TN: 235 ± 5.4 mg/L; TP: 25.3 ± 0.8 mg/L). 94.8% of the biomass from the 40% group could naturally settle down in 30 min which is good for harvest. The activated carbon adsorption was applied as the advanced treatment to resolve the issues with the dark color and residual compounds. After these processes, the removal efficiencies of COD, TN, TP and NH-N reached 97.2%, 94.0%, 99.7% and 99.9%, respectively.
提出了一种集成的三步法工艺来处理厌氧消化猪粪（ADSM）。絮凝和鸟粪石沉淀作为预处理，以去除颗粒并减少磷以平衡藻类生长的条件。在生物步骤中，40%组（2.5 倍稀释）代表 A+B 共培养的最佳培养条件，具有最高的生物量浓度 2.325±0.16g/L，并且在去除营养物质方面表现良好（COD：9770±184mg/L；TN：235±5.4mg/L；TP：25.3±0.8mg/L）。40%组的生物量中有 94.8%可以在 30 分钟内自然沉降，有利于收获。活性炭吸附被用作高级处理，以解决颜色深和残留化合物的问题。经过这些处理过程后，COD、TN、TP 和 NH-N 的去除率分别达到 97.2%、94.0%、99.7%和 99.9%。
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