CAJ | 학술논문

循环水排污水水质复杂,对其直接进行反渗透脱盐处理时容易造成反渗透膜污堵、结垢,降低反渗透性能.为此,采用混凝-软化工艺对其进行处理,并比较不同软化工艺的软化效果.结果表明：采用传统石灰和碳酸钠工艺处理时软化效果较差；采用氢氧化钠和碳酸钠复配软化处理的技术经济性最佳,在二者加药剂量均为250 mg/L时,处理后出水 Ca2＋、Mg2＋分别为0．85、2．44 mmol/L,有机磷为0．73 mg/L达到反渗透的进水要求.
순배수배오수수질복잡,대기직접진행반삼투탈염처리시용역조성반삼투막오도、결구,강저반삼투성능.위차,채용혼응-연화공예대기진행처리,병비교불동연화공예적연화효과.결과표명：채용전통석회화탄산납공예처리시연화효과교차；채용경양화납화탄산납복배연화처리적기술경제성최가,재이자가약제량균위250 mg/L시,처리후출수 Ca2＋、Mg2＋분별위0．85、2．44 mmol/L,유궤린위0．73 mg/L체도반삼투적진수요구.
The circulating waste water has the characteristics of high hardness and alkalinity.It is easy to cause reverse osmosis membrane fouling and performance lowering.Thus,the coagulation-softening technology was applied to conduct water treatment,and the results were compared with that by other softening methods.The results show that:the conventional lime coagulation and so-dium carbonate coagulation were less effective;mixing sodium hydroxide and sodium carbonate was more effective.When the dosage of each softener was 250 mg/L,the calcium,magnesium ions and organ phosphorus of treated water were 0.85 mmol/L,2.44 mmol/L and 0.73 mg/L,respec-tively,which satisfied the inlet water requirements.