CAJ | 학술논문

采用鸟粪石法对氧化铁红厂高氨氮废水进行处理，以pH、n（N）∶n（Mg）和n（N）∶n（P）为主要影响因素，通过响应面法对处理过程进行了优化设计，得到拟合程度高的二次响应曲面模型。预测的最佳实验条件：pH=9．40， n（N）∶n（Mg）∶n（P）=0．8∶1∶1，此条件下氨氮去除率为99．77%。通过对镁盐和磷酸盐投加量的分析得到，当n（N）∶n（Mg）∶n（P）=0．9∶1．25∶1时，出水氨氮能够达到排放标准的要求，且出水正磷酸盐浓度较低。 SEM和XRD表征结果显示，所得沉淀物大部分为磷酸铵镁。
채용조분석법대양화철홍엄고안담폐수진행처리，이pH、n（N）∶n（Mg）화n（N）∶n（P）위주요영향인소，통과향응면법대처리과정진행료우화설계，득도의합정도고적이차향응곡면모형。예측적최가실험조건：pH=9．40， n（N）∶n（Mg）∶n（P）=0．8∶1∶1，차조건하안담거제솔위99．77%。통과대미염화린산염투가량적분석득도，당n（N）∶n（Mg）∶n（P）=0．9∶1．25∶1시，출수안담능구체도배방표준적요구，차출수정린산염농도교저。 SEM화XRD표정결과현시，소득침정물대부분위린산안미。
MAP method has been used for treating the high ammonia-nitrogen wastewater from an iron oxide red factory. The three main influencing factors are as follows:pH,n (N)∶n (Mg)和n (N)∶n (P). The treatment course is optimized by response surface method (RSM),so as to obtain the quadratic response curved model with high fitting degree. Under the forecast optimum experiment conditions:pH=9.40,n (N)∶n (Mg)∶n (P)=0.8∶1∶1, the removing rate of ammonia-nitrogen could be 99.77%. By analyzing the dosages of Mg2+and PO43-,it is found that when n(N)∶n (Mg)∶n (P)=0.9∶1.25∶1,the effluent concentration of ammonia-nitrogen could meet the requirements for the emis-sion standard,and the concentration of orthophosphate could stay at a low level. The results of SEM and XRD chara-cterization show that the sediments obtained are mostly magnesium ammonium phosphate.