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首页> 外文会议>IWA(International Water Association) International Specialised Conference on Wastewater Treatment for Nutrient Removal and Reuse; 20040126-29; Bangkok(TH) >Energy saving processes for nitrogen removal in organic wastewater from food processing industries in Thailand
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Energy saving processes for nitrogen removal in organic wastewater from food processing industries in Thailand

机译：泰国食品加工业的有机废水脱氮节能工艺

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摘要

Nitrogen removal from organic wastewater is becoming a demand in developed communities. The use of nitrite as intermediate in the treatment of wastewater has been largely ignored, but is actually a relevant energy saving process compared to conventional nitrification/denitrification using nitrate as intermediate. Full-scale results and pilot-scale results using this process are presented. The process needs some additional process considerations and process control to be utilized. Especially under tropical conditions the nitritation process will round easily, and it must be expected that many AS treatment plants in the food industry already produce NO_2-N. This uncontrolled nitrogen conversion can be the main cause for sludge bulking problems. It is expected that sludge bulking problems in many cases can be solved just by changing the process control in order to run a more consequent nitritation. Theoretically this process will decrease the oxygen consumption for oxidation by 25% and the use of carbon source for the reduction will be decreased by 40% compared to the conventional process.
机译：从有机废水中脱氮已成为发达社区的需求。在废水处理中使用亚硝酸盐作为中间体已被大大忽略，但与使用硝酸盐作为中间体的常规硝化/反硝化相比，这实际上是一个节能的过程。介绍了使用此过程的全面结果和中试结果。该过程需要一些其他过程注意事项和过程控制才能使用。特别是在热带条件下，硝化过程将很容易进行，并且必须期望食品工业中的许多AS处理厂已经产生NO_2-N。这种不受控制的氮转化可能是造成污泥膨胀问题的主要原因。可以预期，只需改变过程控制以进行更多的硝化反应，就可以解决许多情况下污泥膨胀的问题。从理论上讲，与传统方法相比，该方法将使氧化过程中的氧气消耗量减少25％，而用于还原的碳源使用量将减少40％。

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