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PROCESS FOR BIOCHEMICAL OXIDATION OF ULTRA-TOXIC WASTEWATER IN A PACKED BED BIOREACTOR
PROCESS FOR BIOCHEMICAL OXIDATION OF ULTRA-TOXIC WASTEWATER IN A PACKED BED BIOREACTOR
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机译：袋式床生物反应器中超有毒废水的生物化学氧化过程
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摘要
The biochemical oxidation of two wastewater feeds, one containing at least ten times more ammonia nitrogen, and the other at least ten times more chlorinated hydrocarbons, than present in a conventional municipal wastewater stream were treated in an aerated packed bed bioreactor inoculated with microorganisms ("cells") especially cultured and acclimated to the task. Arbitrarily shaped pieces of numerous microporous synthetic resinous materials (familiarly referred to as "porous plastics") are discovered to provide not only an excellent packing for the bioreactor, but also a peculiar catalytic function not normally associated with a bio-support. Microporous polytetrafluoroethylene (PTFE foam) appears to be too inert to generate a high level of microbial activity for either feed which was tested, while microporous polyethylene appears to be exactly what the cells ordered. Such activity cannot reasonably be correlated to the overall size of the micropores alone, because a calcined dolomite having substantially the same range of average pore sizes, exhibits a removal rate, measured as mg/min/m2 of surface, which is generally about ten times lower than the rate obtained with the plastic biosupport, all other process conditions being the same. The comparison was made by simultaneously feeding several columnar glass reactors, each having a packed bed of different porous plastic packing, and one with commercially available microporous Celite TM . As one might expect, the removal rate per unit volume (liter) of packing appeared not to correlate with the removal rate per unit of surface area, since the distribution of cells over the surface, and the rate at which the substrate is fed to the cells are the determining factors for removal rate. Shape of the micropores in the packing appear to influence activity.
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机译：两种废水的生化氧化处理是在充气的填充床生物反应器中处理的，其中两种废水的进料比常规市政废水中的氨气至少高出十倍，而另一种氯化物的氯含量至少高出十倍。细胞”），尤其是培养并适应任务的人。已发现许多微孔合成树脂材料（通常称为“多孔塑料”）的任意形状不仅可以为生物反应器提供出色的填充效果，而且还可以提供通常与生物载体无关的特殊催化功能。微孔聚四氟乙烯（PTFE泡沫）似乎过于惰性，无法对两种饲料进行高水平的微生物活性测试，而微孔聚乙烯似乎正是细胞所订购的。这种活性不能合理地与单独的微孔的总尺寸相关联，因为具有基本相同的平均孔径范围的煅烧白云石表现出以mg / min / m 2为单位的表面去除率，通常约为十倍。低于塑料生物载体获得的速率，所有其他工艺条件均相同。通过同时进料几个柱状玻璃反应器进行比较，每个反应器具有不同多孔塑料填料的填充床，并且一个反应器装有市售的微孔Celite TM。正如人们可能期望的那样，单位体积（升）填充物的去除率似乎与单位表面积的去除率不相关，因为细胞在表面上的分布以及基体被送入填料的速率。细胞是去除率的决定因素。填料中微孔的形状似乎会影响活性。
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