CAJ | 학술논문

以某水源为中水的废水“零排放”型火电厂，设置了循环水排污水回用系统，设计处理工艺为混凝澄清预处理－超滤－反渗透，反渗透淡水作为循环水及锅炉补给水系统水源。由于采用膜技术回收利用循环水排污水的工程实例中均存在膜系统运行不稳定，甚至无法正常运行的情况，并影响锅炉供水安全。对循环水处理工艺进行了试验研究。结果表明，超滤－反渗透装置水源采用石灰处理后的中水，循环水排污水采用碱性软化旁流处理工艺，可以减缓膜污堵，确保循环水系统稳定运行及锅炉给水安全，并满足全厂废水“零排放”的要求。
이모수원위중수적폐수“령배방”형화전엄，설치료순배수배오수회용계통，설계처리공예위혼응징청예처리－초려－반삼투，반삼투담수작위순배수급과로보급수계통수원。유우채용막기술회수이용순배수배오수적공정실례중균존재막계통운행불은정，심지무법정상운행적정황，병영향과로공수안전。대순배수처리공예진행료시험연구。결과표명，초려－반삼투장치수원채용석회처리후적중수，순배수배오수채용감성연화방류처리공예，가이감완막오도，학보순배수계통은정운행급과로급수안전，병만족전엄폐수“령배방”적요구。
Reclaimed water is used as water source in a wastewater zero discharge thermal power plant .The original de-signed treatment process is coagulation and clarification pretreatment- ultrafiltration - reverse osmosis for blowdown water and the reverse osmosis freshwater is used as make-up water source of circulating water and the boiler .In existed projects of blowdown water recycling system using membrane technology ,membrane systems run not stably or even can’t run normal-ly and affect the security of boiler water supply .The circulating water treatment process is experimentally studied in this arti-cle .The results indicate that the reclaimed water treated by lime cad be used as make-up water source of ultrafiltration and reverse system and blowdown water can be treated with alkali bypass flow treatment ,which can slow membrane fouling ,en-sure stable operation of the circulating water system and security of boiler feed water and meet the demand of wastewater zero discharge .