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预处理+无机陶瓷膜工艺处理乳化液废水的实验研究

open access: yesGongye shui chuli, 2011
实验采用预处理+无机陶瓷膜工艺对机械加工厂产生的乳化液废水进行处理。主要研究影响膜通量的几个操作条件:操作压力、膜面流速、温度对膜通量的影响情况,并确定了膜的合理操作条件;在此合理的操作条件下研究了膜通量、含油量、COD随时间的变化情况。结果表明,操作压力为0.36 MPa,膜面流速为4.66 m/s,温度为60℃时,膜设备处理乳化液废水,连续运行长达8 h以上,并且保持膜通量稳定在80 L/(m2.h)。此工艺对乳化液废水中油的去除率≥99.9%,COD的去除率≥99.1%。
王瑛, 李梦, 焦光联
doaj   +2 more sources

MBR膜污染的机理及其影响因素研究进展

open access: yesGongye shui chuli, 2017
简述了膜污染机理,从污泥混合液性质、微生物群落、膜的性质、操作条件、进水水质等方面阐述了膜污染影响因素,并介绍了膜的清洗方法。今后应在膜污染机理、膜材料的选择及操作条件、膜组件的优化等方面作进一步研究。
唐朝春   +4 more
doaj   +2 more sources

强降雨下不同安装角度的空心复合绝缘子冲击闪络特性研究

open access: yesDianci bileiqi, 2021
随着全球气候变暖,特大暴雨、雾霾、暴雪等极端天气频发,其中暴雨天气已成为电力设备安全运行的严重隐患之一。空心复合绝缘子已被广泛应用于各种电力设备中,但对于强降雨条件下空心复合绝缘子的冲击闪络特性缺乏系统的研究。以额定电压220 kV空心复合绝缘子为试品,进行了强降雨条件下空心复合绝缘子的冲击放电电压试验,研究结果表明:强降雨条件下,降雨强度对于空心复合绝缘子的50%雷电冲击闪络电压影响不大,而50%操作冲击闪络电压随着降雨强度的增大而减小,符合负幂指数关系;雨水电导率的增加对50 ...
刘蕾   +5 more
doaj  

工艺条件对预膜处理效果的影响

open access: yesGongye shui chuli, 1994
考察了不同工艺条件下对预膜处理效果的影响。结果表明,不同的工艺条件,预膜的效果不尽相同,它的好坏与正常操作管理和药剂等条件均有关系。
高庆丰, 周霖
doaj   +2 more sources

支柱绝缘子在污秽条件下的操作冲击特性

open access: yesDianci bileiqi, 1988
给出了支柱绝缘子在污秽条件下的操作冲击试验结果。所试验的绝缘子长度从4米到12米。观察到在污秽存在时,特别是当大片干燥带影响绝缘子表面时,操作冲击耐受电压大大降低。污秽条件下和清洁干燥条件下的操作冲击强度的比值实际上与绝缘子的长度无关,而在污秽条件下操作冲击与交流绝缘强度的比值随绝缘子长度的增加而减小。
刘荣淑
doaj  

高pH值条件下合成氨厂冷却水系统微生物的控制

open access: yesGongye shui chuli, 1999
通过针对陕西渭河化肥厂循环冷却水系统水质运行条件而进行的大量试验和实践工作,讨论并确定了在高pH值条件下以氯为杀生主剂,异噻唑啉酮、稳定性二氧化氯、1227为杀生辅剂的微生物控制方案,并对方案的操作条件进行了研究。
齐永红, 靳文礼, 刘菊梅
doaj   +2 more sources

取消超高压断路器合闸电阻的讨论

open access: yesGaoya dianqi, 1991
本文简要说明断路器取消合闸电阻的可行性,MOA保护能力及保护方式,MOA在操作过电压下吸收能量及操作过电压研究计算条件等;提出了在一定条件下取消合闸电阻需要继续进行的工作。
王建生
doaj  

新型高效无机高分子净水剂——聚羟基硫酸铁的制造方法

open access: yesGongye shui chuli, 1992
本文介绍聚羟基硫酸铁(简称聚铁)的制法原理、操作条件及成品质量标准。
秦玉南
doaj   +2 more sources

膜生物反应器在污水处理中膜污染及其防治

open access: yesGongye shui chuli, 2004
膜生物反应器在污水处理中的应用范围和规模虽然不断增加,然而,膜污染严重阻碍了膜生物反应器技术的推广应用。作者从膜的性质、料液性质以及膜分离的操作条件三个方面分析了膜污染的成因和膜污染过程,系统论述了膜污染在国内外的研究进展;另外还从改善膜本身的抗污染能力,变化混合液的特性,优化膜分离的操作条件和膜清洗四个方面介绍了膜污染的防治方法。
霍守亮, 黄显怀, 刘绍根, 程静
doaj   +2 more sources

谈谈切合空线的自动重合闸操作方式

open access: yesGaoya dianqi, 1982
在分析各种运行条件下切合空线操作方式出现概率等的基础上,认为:只有当线路发生单相或二相持续接地故障,线路又采用三相重合闸或综合重合闸线路,发生二相线路故障时,才有可能遇到一种概率极小的重合闸操作方式。重合闸断路器的切合空线的基本操作方式为“分”、“合”。重合闸方式切合空线仅是特定条件下可能出现的一种特殊操作方式。
王晋根
doaj  

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