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Hotel bath wastewater treatment by ultrafiltration and ultrafiltration devices of the research and development

Pressure and ∞ D increased the amount of rejection relationship very slowly. This is mainly because the work pressure is too high will cause more than membrane damage within the sponge support layer to form a compact, thus making a significant decline in water flux, generally up to 25% to 30%. In addition, with the ultrafiltration process carried out interception material gradually accumulated on the membrane surface, resulting in the generation of concentration polarization, serious pollution of the membrane surface, causing flux decline. To overcome the concentration polarization phenomena, the general method of increasing the flow rate of the membrane surface. Such as control of water production rate of 50%, the ultra-filtration device can be up and running. 2.3 over the choice of membrane pore water reuse targets mainly OODcr, B0, Ss, ABS and other coliform bacteria,[link widoczny dla zalogowanych], these indicators have been defined (see \Therefore, according to different water quality than to select the appropriate membrane pore size. 2.4 Long-term maintenance of ultra-filter continuous operation of the ultra-filtration device in order to ensure stable water quality, can run 8 ~ 10h after the use of self cleaning ultrafiltration water Circuit components, for about 20min,[link widoczny dla zalogowanych], just hundreds of water l can. Respond to each other about two months more than a chemical cleaning of membrane devices. 3 technical and economic indicators have been implemented due to ultra filtration industrial production, for the treatment of this device are O. 5 ~ 1O. Om3 / h capacity range of different products to choose from. Water recovery up to 75% to 85%, operating costs (drugs and power consumption) is only 0.16 yuan per hour,[link widoczny dla zalogowanych], the water treatment 5m3 5m2 area around ultrafiltration device, equipment investment costs of about 5 million. 4 small thread 1) in the water reuse technology uses ultra-filtration technology is feasible, and ultra-filtration device is a reliable and practical device. 2) To ensure the normal operation of ultra-filtration devices and access to higher technical indicators and economic indicators, must be a certain degree of pre-treatment process. 3) The treatment of advanced technology, reliable, process design is reasonable, low investment and operating costs 4) ultra-filtration process for water reuse, water quality and stability, water quality standards. References 1AulenhschDB. CtfilsonM, PownPC,[link widoczny dla zalogowanych], a /. Trmnneat. f1 days. m strike ∞】 atwagtePartII. In: Pi ∞ eediI1. f26, rhIndus-trialWastec 【m. 1 ~ \May4-6, 19712 care of the sound of water treatment works in summer Beijing: Tsinghua University Press ,198553 - 1O93BehGLEnnme l bleed at the nose rise of the state project 'haadlx ~ ok. ChfltonBookCompany,[link widoczny dla zalogowanych], 1974.1105 ~ 11104 Shengjian Kang. Environmental Engineers Handbook. Beijing: China Building Industry Press Du, l985.6 spit Emu ~ 6715PeterRKMembranet ∞} ∞ b stare anddI】 s twenty i Kai lseparati ~ t ~ miques. NoyesDataCorlx ~ tion. 1976.398 ~ 399ApplicationprogressofUFmembranetechnologyinhotel'SbathwastewaterLiuJingwei, WangBaoqing (BeijingMunicipalResearchAcademyofEnvironmentalProtection, Beijing100037) AbstractUltrafiltrationrnembranew & sappUedtotreatbathwastewater. Themembranefilteredoutthemicron10kcu1armatter, butwaterisaLlowedpassage. TheresultsindicatedthatUFunithavehigherremovalrateofto ・ taldissolvedorganicmatter, permeateliquidcanbyproductrecover-Keywordsenvlmnmentalprotectionwatertreatmentwaterreu from eultrafiltration

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