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多点进水多级AO工艺在寒冷地区大型污水处理厂的应用 被引量:3
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作者 叶宁 《净水技术》 CAS 2023年第4期161-168,共8页
为进一步提升生态环境和水环境质量,提升公众满意度,唐山市中心城区现状的3座污水厂需进行迁建,在郊区新建2座大型规模的污水厂,同时出水标准提升到“准Ⅳ类”水(除TN外,其余指标均达到地表水Ⅳ类标准),可为周边用户提供再生水资源。唐... 为进一步提升生态环境和水环境质量,提升公众满意度,唐山市中心城区现状的3座污水厂需进行迁建,在郊区新建2座大型规模的污水厂,同时出水标准提升到“准Ⅳ类”水(除TN外,其余指标均达到地表水Ⅳ类标准),可为周边用户提供再生水资源。唐山位于寒冷地区,冬季温度较低时,污水厂在生物反应阶段的脱氮除磷效果明显下降。多点进水多级AO生物处理工艺具有较强的灵活性、适应性和耐冲击负荷能力,在进水水质变化时,能增强系统运行稳定性,保证污水厂平稳运行,有利于污水厂对维护良好水环境做出保障,同时为城市提供稳定的再生水资源。该工艺可以充分利用污水自身所含营养物质,优化分配污水中的碳源,并对污水中的氧和磷进行精准的脱离,从而达到节约能耗、降低处理成本的目的,经济效益良好。按30万m^(3)/d的污水处理规模计算,全年可节约电费约为131万元,乙酸钠药剂费约为1944万元。 展开更多
关键词 污水处理厂 多级AO 寒冷地区 低碳高氮磷污水 节约碳源
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城镇污水处理厂同步硝化反硝化生产性应用研究 被引量:1
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作者 谢羽佳 《锅炉制造》 2022年第3期42-45,共4页
徐州某污水处理厂的处理工艺为AAO工艺,其中好氧区为6格廊道推流式,长期进水碳氮比偏低(COD:TN=4:1左右),为确保出水总氮的稳定达标并降低碳源成本,厂区通过采取提高活性污泥浓度、多点分配进水、好氧区低溶解氧控制等措施,在运行中发现... 徐州某污水处理厂的处理工艺为AAO工艺,其中好氧区为6格廊道推流式,长期进水碳氮比偏低(COD:TN=4:1左右),为确保出水总氮的稳定达标并降低碳源成本,厂区通过采取提高活性污泥浓度、多点分配进水、好氧区低溶解氧控制等措施,在运行中发现,生化池好氧区在高污泥浓度和低溶解氧条件下具有较好的同步硝化反硝化的现象,同时,污泥浓度的提高更加有利于同步硝化反硝化的实现,既确保了出水总氮的稳定达标、又节省了碳源成本,在好氧区为多廊道推流式的城镇污水厂中具有较为广阔的推广和借鉴意义。 展开更多
关键词 AAO 低溶解氧 同步硝化反硝化 碳源节约
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Energy Conservation Effect of Refrigerated Cabinets at Supermarket Utilizing the Exhaust Heat from Dispersed Power
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作者 Tatsuya Shikano Sang-Chul Bae +1 位作者 Masafumi Katsuta Tomohiro Anamizu 《Journal of Energy and Power Engineering》 2015年第4期317-325,共9页
Since the nuclear disaster occurred from huge earthquake in Japan 2011, Japanese energy generation system has been expected to prioritize safety and trustworthiness. To meet this requirement, distributed power supply ... Since the nuclear disaster occurred from huge earthquake in Japan 2011, Japanese energy generation system has been expected to prioritize safety and trustworthiness. To meet this requirement, distributed power supply systems are considered to be one of solutions. In this study, we aimed to conserve energy and reduce carbon dioxide emission of supermarket which installed a novel environment-friendly dispersed power. We focused the energy used by refrigerated cabinets. We built small scale model of supermarket which was equipped with dispersed power. From this scale model, the energy conservation effect of supercooling is from 10% to 25% during the summertime and intermediate time. At last, we found that when outside temperature is about 14 ℃ or more, supercooling was effective. In addition, since energy consumption of refrigerated cabinet is influenced by inside enthalpy, we controlled the inside air temperature and humidity by installing desiccant system and examined its effect. 展开更多
关键词 Dispersed power energy conservation SUPERMARKET refrigerated cabinets supercooling.
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