Innovative process scheme for removal of organic matter, phosphorus and nitrogen from pig manure.
Innovative process scheme for removal of organic matter, phosphorus and nitrogen from pig manure.
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DOI：
10.1016/j.watres.2008.06.021
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发表时间：
2008-09
期刊：
影响因子：
12.8
通讯作者：
D. Karakashev;J. E. Schmidt;I. Angelidaki
中科院分区：
文献类型：
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作者：
D. Karakashev;J. E. Schmidt;I. Angelidaki
处理猪粪通常需要根据环境法规进行处理。本研究对猪粪中有机物（厌氧消化、卧螺离心机出水分离、膜微滤、上流式厌氧污泥毯（UASB）反应器后消化、部分氧化）、氮（限氧自养硝化-反硝化，OLAND）和磷（沉淀为鸟粪石除磷，PRS）的不同工艺进行了试验。结果表明，微滤不适合处理猪粪。PRS处理后的废水对UASB中猪粪的进一步处理产生负面影响，因此未包括在最终工艺流程方案中。在最终方案（PIGMAN概念）中，采用以下连续工艺步骤的组合：嗜热厌氧消化与卧卧离心机的顺序分离，UASB反应器的后消化，部分氧化和最后的OLAND工艺。该组合使总有机、总氮和总磷含量分别降低96%、88%和81%。
Disposal of pig manure often requires treatment with respect to environmental legislations. In this study different processes for reduction of the organic matter (anaerobic digestion, effluent separation by decanter centrifugation, membrane microfiltration, post-digestion in upflow anaerobic sludge blanket (UASB) reactor, partial oxidation), nitrogen (oxygen-limited autotrophic nitrification–denitrification, OLAND) and phosphorus (phosphorus removal by precipitation as struvite, PRS) from pig manure were tested. Results obtained showed that microfiltration was unsuitable for pig manure treatment. PRS treated effluent was negatively affecting the further processing of the pig manure in UASB, and was therefore not included in the final process flow scheme. In a final scheme (PIGMAN concept) combination of the following successive process steps was used: thermophilic anaerobic digestion with sequential separation by decanter centrifuge, post-digestion in UASB reactor, partial oxidation and finally OLAND process. This combination resulted in reduction of the total organic, nitrogen and phosphorus contents by 96%, 88%, and 81%, respectively.