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超大型污泥干化焚烧工程自控系统设计要点与实现 被引量:2
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作者 李翊君 《自动化仪表》 CAS 2021年第9期80-86,91,共8页
近年来,我国城镇污水处理厂污泥产量高速增长,污泥的安全处理问题日益严峻。污泥经干化后单独焚烧的工艺因其减量化、无害化和稳定化较为彻底的优点被国内逐渐接受并推广。但我国污泥干化焚烧工程建设起步较晚,尚无成熟的设计标准,无超... 近年来,我国城镇污水处理厂污泥产量高速增长,污泥的安全处理问题日益严峻。污泥经干化后单独焚烧的工艺因其减量化、无害化和稳定化较为彻底的优点被国内逐渐接受并推广。但我国污泥干化焚烧工程建设起步较晚,尚无成熟的设计标准,无超大型工程的建设案例。以上海市白龙港污泥处理二期工程(规模2430 t/d,含水率80%)为实例,借鉴国外建设经验,并结合国内实际,对超大型污泥干化焚烧工程自控系统设计要点进行分析,给出了自控系统总体架构、车间拓扑、主要调节及保护设置等具体实现方案。目前,该工程已建成投运满一年。运行结果表明:自控系统设计安全可靠、灵活适用,可以很好地保障生产安全,实现全流程自动化控制,满足“泥水协同”的运管调度需求,对同类工程的自控系统设计具有借鉴和参考价值。 展开更多
关键词 污泥化焚烧 流化床 自控系统 架构设计 拓扑设计 干化机控制 化机保护 焚烧炉控制 焚烧炉保护
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Diverse Needling Methods for Dry Eye Syndrome:A Randomized Controlled Study 被引量:4
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作者 Guo Meng-hu Cui En-cao +2 位作者 Li Xin-yuan Zong Lei Hong Jue 《Journal of Acupuncture and Tuina Science》 2013年第2期84-88,共5页
Objective: To explore a proper acupuncture treatment protocol for dry eye syndrome (DES), by comparing the therapeutic effects between ordinary acupuncture and electroacupuncture (EA). Methods: Forty-seven elig... Objective: To explore a proper acupuncture treatment protocol for dry eye syndrome (DES), by comparing the therapeutic effects between ordinary acupuncture and electroacupuncture (EA). Methods: Forty-seven eligible subjects with DES were randomized into an acupuncture group (n=23) and an EA group (n=24). With the same acupoint formula, the acupuncture group was treated with ordinary acupuncture, and the EA group was treated with ordinary acupuncture plus electrical stimulation. After a treatment course, eye symptom score, Schirmer test (SIT), Break-up Time (BUT) of tear film, Corneal Fluorescein Staining (CFS), and Visual Analogue Scale (VAS) were adopted in evaluation and comparison of the two groups. Results: The total effective rate was 79.2% in the EA group versus 56.5% in the acupuncture group, and the difference was statistically significant (P〈0.05). After treatment, both groups had marked improvements in eye symptom score, SIT, BUT, CFS, and VAS values (P〈0.001); the EA group was better than acupuncture group in improving eye symptom score and SIT value (both P〈0.05); the differences were insignificant in comparing VAS, BUT and CFS results between the two groups (P〉0.05). Conclusion: Both EA and ordinary acupuncture are effective in treating DES, but EA is better than ordinary acupuncture in improving eye symptom and SIT score. 展开更多
关键词 Acupuncture Therapy ELECTROACUPUNCTURE Dry Eye Syndromes Randomized Controlled Trial
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