共查询到20条相似文献,搜索用时 187 毫秒
1.
2.
3.
4.
5.
6.
污水处理厂中反硝化除磷工艺的应用 总被引:1,自引:0,他引:1
综述了反硝化除磷技术的原理和实现反硝化脱氮除磷的主要工艺。该工艺是根据反硝化聚磷菌(DPB)的摄磷特点而开发的新型生物脱氮除磷工艺,以其特有的"一碳两用"和"双泥系统",有效解决了常规生物脱氮除磷工艺的碳源供求矛盾和泥龄控制问题,可同时获得较高的除磷和脱氮效率。目前常见的主要工艺有A2N-SBR工艺、BCFS工艺和DEPHANOX工艺。 相似文献
7.
污水生物脱氮除磷新技术 总被引:1,自引:0,他引:1
概述了传统生物脱氮除磷原理,分析了传统生物脱氮除磷工艺的不足,并介绍了同时硝化反硝化、短程硝化反硝化、厌氧氨氧化、反硝化除磷等几种经济、高效的生物脱氮除磷新技术的原理和研究现状. 相似文献
8.
9.
10.
膜生物反应器强化脱氮除磷工艺优化与控制 总被引:2,自引:0,他引:2
随着城镇污水排放标准对氮、磷等营养元素的进一步提高,对于传统污水处理工艺来讲是一种挑战.膜生物反应器工艺技术以其独特的优势备受关注,在强化脱氮除磷方面亦表现出优于传统工艺的特点.非传统脱氮除磷的观念的后置反硝化工艺(无外加碳源)在膜生物反应器中得到了应用,并取得良好的去除营养物的效果.从现有的MBR脱氮除磷工艺着手,分析探讨了MBR脱氮除磷工艺研究进展及其应用前景. 相似文献
11.
The increase in refractoriness referred to here is usually termed freezing. The study was undertaken to overcome the tendency of pyrometric cones to set or freeze when subjected to prolonged heat treatment when the temperature is more or less fluctuating. The work includes a study of the freezing tendency of some natural clays, of several pottery bodies, and of pyrometric cones. A body was developed that does not freeze under the treatment that produces the phenomenon in the other materials tested but the cause is not established. 相似文献
12.
13.
介绍煤化工装置空分氧泵变频器的电气控制原理,分析氧泵变频器因系统晃电而导致跳停的原因,通过对变频器增加直流支撑装置,确保空分氧泵变频器稳定运行。 相似文献
14.
本文介绍了日本在煤气化联合循环发电、煤加氢热解,煤加氢液化和水煤浆等煤转化技术方面是最新进展及中度厂部分试验结果,同时也介绍了日本最近提出的煤气化联合燃料电池新转化工艺的方案。 相似文献
15.
16.
17.
18.
《Journal of aerosol science》1999,30(3):279-288
A technique based on fluorescence scattering by microdroplets has been shown to be capable of measuring instantaneous rates of photochemical reactions in microdroplets. The technique has been applied to study trans -to-cis photoisomerization of thioindigo dye in single solution droplets suspended in an electrodynamic balance. Through an analysis it is shown that the concentration distributions of isomers remain uniform in a droplet under the experimental conditions; thus, the scattered fluorescence intensity from the droplet is proportional to the concentration of solely fluorescent trans isomer molecules. The steady-state scattered fluorescence intensity versus incident laser power data have been used to interpret the kinetics of the reaction. The results show that the rate constants can be determined from the scattered fluorescence intensity versus time data. The technique is particularly suitable when only one species fluoresces in the photo-reactive wavelength range while other species present in a droplet do not. 相似文献
19.
20.
描述了江苏省塑料行业的概貌,介绍了江苏省塑料行业各领域(如热塑性塑料、热固性塑料、降解塑料、成型加工、塑料制品、塑料助剂等)取得的技术成果、研究进展和生产装置水平。 相似文献