Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Shanxi Hydrotechnics》 2016-01
Add to Favorite Get Latest Update

Research on Treatment of High Ammonia Nitrogen Pharmaceutical Wastewater by Magnesium Ammonium Phosphate Precipitation

ZHAO Yan-feng;  
The magnesium ammonium phosphate(MAP)precipitation process was used to treat high ammonia nitrogen pharmaceutical wastewater and simulated wastewater. The results show that under the optimum treatment condition of p H 9.0 ~10.0,Mg ∶N ∶P molar ratio 1.2 ∶1 ∶1,the ammonia-nitrogen removal rate was above 90%. The use of Na H2PO4 or Na2HPO4needed to add alkali regulation,and alkali does not need to add when Na3PO4 is used. Under the experimental conditions,1mg N needs 14.5 mg Mg Cl2·6H2O and 27.2mg Na3PO4·12H2O for treatment,and bring MAP precipitation 17.5 mg. This method lays the foundation for the subsequent biochemical treatment of high concentration ammonia nitrogen wastewater.
【CateGory Index】: X787
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved