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首页> 外文会议>Annual International Meeting of the American Society of Agricultural and Biological Engineers >Generation 3 Treatment Technology for Diluted Swine Wastewater using High-Rate Solid-Liquid Separation and Nutrient Removal Processes
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Generation 3 Treatment Technology for Diluted Swine Wastewater using High-Rate Solid-Liquid Separation and Nutrient Removal Processes

机译：使用高速率固液分离和营养去除方法的稀释猪废水生成3处理技术

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The primary objective for this project was to construct and evaluate a third generation, innovative swine manure treatment system. The system was designed to: separate solids and liquids with the aid of settling and polymer flocculants; biologically remove ammonia nitrogen with bacteria adapted to high-strength wastewater; remove phosphorus via alkali precipitation; and reduce emissions of odorant compounds, ammonia, pathogens, and heavy metals to environmental media. Technical environmental performance standards were those identified by the State of North Carolina in 15A NCAC 02T, 2010, Swine Waste Management System Performance Standards and included: discharge of animal waste to surface waters and groundwater; emission of ammonia; emission of odor; release of disease-transmitting vectors and airborne pathogens; and nutrient and heavy metal contamination of soil and groundwater. The third generation was designed to further reduce cost of manure treatment through pre-concentration of diluted manureusing a decanting tank before polymer flocculation. The treatment system was demonstrated full-scale on a farrow-to-finish farm that produced 30,450 swine per year. The treatment system was contained in tanks. The results showed that the innovative swine manure treatment system was capable of operating under steady state conditions treating flushed swine manure at a rate of approximately 75,000 gallons of manure per day. The treatment system was documented to remove, on a mass basis, approximately 99%of total suspended solids, 98% of COD, 99% of TKN, 100% ammonia, 100% odor compounds, 92% phosphorus, 95% copper, and 97% zinc from the flushed manure. Fecal coliform reductions were measured to be 99.98% (when the alkali precipitation component of the system was at a pH of 10.1). The third generation technology meets the criteria identified in the referenced NC Performance Standards. The treatment process also provides a mechanism and market for the solids that are separated. Collectively this treatment process, when operated and managed under the conditions during which we conducted this study, significantly reduces the potential for emissions of odor and ammonia, and the transfer of nutrients and pathogenic bacteria to surface and groundwater in thedrainage basin where the animals are grown on animal feeding operations.
机译：该项目的主要目标是构建和评价第三代，创新猪粪处理系统。该系统被设计为：单独的固体和液体与沉淀和聚合物絮凝剂的助剂;生物除去有适于高浓度废水细菌氨氮;除去经由碱沉淀磷;并降低加臭剂的化合物，氨，病原体和重金属对环境介质的排放。技术环境绩效标准是那些鉴定北卡罗来纳州的15A NCAC 02T，2010年国家，猪废物管理系统性能标准，其中包括：动物废弃物排放到地表水和地下水;氨的排放;气味的发射;释放疾病传递载体和空气传播的病原体的;土壤和地下水的和营养物和重金属污染。第三代的目的是要通过稀释manureusing聚合物絮凝前一个滗析罐的预浓缩进一步减少粪便处理的成本。该处理系统被证明在法罗到完成农场每年生产30,450猪满刻度。该处理系统载于坦克。结果表明，该创新的猪粪便处理系统能够稳态条件以大约75000每天粪便加仑的速率处理冲洗猪粪下操作的。该处理系统被记录到除去，以质量基准计，总悬浮固体的约99％，COD的98％，TKN的99％，100％的氨，100％气味化合物，92层％的磷，95％铜和97从冲洗粪肥％的锌。粪便大肠菌减少经测定为99.98％（当系统的碱沉淀成分是在pH为10.1）。第三代技术满足在参考NC绩效标准确定的标准。治疗过程还提供了用于分离固体的机构和市场。总的来说这种治疗过程中，操作并且在此期间，我们进行本研究的条件下管理时，显著降低了气味和氨排放的潜力，以及营养物和致病菌在thedrainage盆转移到地表水和地下水，其中动物生长在动物饲养。

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