Treatment of aerospace wastewater by membrane separation technology

被引：0
|
作者：
Li H. [1 ,2 ]
Wang K. [1 ,2 ]
Kong X. [1 ,2 ]
Liu Y. [3 ]
机构：
[1] Shanghai Institute of Space Propulsion, Shanghai
[2] Shanghai Engineering Research Center of Space Engine, Shanghai
[3] Shanghai Fire Brigade Songjiang Detachment, Shanghai
来源：
Huagong Jinzhan/Chemical Industry and Engineering Progress | 2019年 / 38卷
关键词：
aerospace wastewater; membrane fouling; purify; reverse osmosis; ultrafiltration;
D O I：
10.16085/j.issn.1000-6613.2019-0489
中图分类号：
学科分类号：
摘要：
Membrane separation technology has been widely applied to deeply purify aerospace wastewater recently. The whole purification is a process of multi-segment gradient filtering. Pretreatment consists of micron-scale sand filtration and ozone aeration. After oxidizing sedimentation and being cleared through ultrafiltration(UF) treatment, the water is clean and can be used for general washing purposes. Then, if it goes through reverse osmosis device(RO) to be further purified, the water can be reused for higher purposes. The conclusion shows: COD below 10mg/L, ammonia nitrogen 4.4mg/L, UDMH below 0.5mg/L. After deep purification, the pollutants were adsorbed on the surface of the membrane. The pressure difference gradually increased, water yield decreased, and the conductivity of water production increased slightly on the surface of the membrane. The mixed solution of 0.8mol/L NaOH and 0.5% 84 disinfectant is used as cleaning agent for membrane cleaning, and the best cleaning effect is obtained after soaking for 28 hours. Experimental results show that the deep purification of aerospace wastewater with membrane separation technology is feasible and yields substantial economic benefits. The technology is green and environment friendly, realizes recycling economy and can reduce environmental pollution by aerospace wastewater. © 2019, Chemical Industry Press Co., Ltd.. All rights reserved.
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页码：247 / 251
页数：4
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