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The Research of Lanthanum Modified Polyaluminium Ferric Chloride and Application in Sauce Wastewater Treatment

Author: FuJing
Tutor: LiShanPing
School: Shandong University
Course: Environmental Engineering
Keywords: Homemade Aluminium Ferric Sauce Wastewater Modified Lanthanum
CLC: X703.5
Type: Master's thesis
Year: 2010
Downloads: 77
Quote: 0
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Abstract


This paper studies , blast furnace gas ash and aluminum ash as the main raw material , and in the process of synthesis homemade ferric chloride flocculant (PAFC) , add small amount of lanthanum nitrate on homemade PAFC flocculant modified , the development of rare earth lanthanum change flocculant performance before and after sex homemade Aluminium Ferric (La-PAFC), modified contrast , preliminary modification mechanism of rare earth lanthanum . Study the synthesis of various factors on the flocculation performance of La-PAFC , determine the optimum conditions of synthesis , and La-PAFC flocculation mechanism . Experimental results show that the La - of PAFC flocculation superior homemade of PAFC . Synthesis process factors La-PAFC flocculation performance , determine optimal synthesis conditions of La-PAFC . Ferron complex colorimetry experiments obtained the lanthanum nitrate polymerization process , to improve the content of the active ingredient in La-PAFC affect ferroaluminum hydrolysis lanthanum nitrate addition and the basicity of the morphology of the Al-Fe impact. The experimental results show that the dynamic process of flocculation , with lanthanum nitrate modified homemade PAFC can significantly improve the final floc particle size , significantly reduce the differences in floc floc generate speed , and ultimately improve the treatment effect . Ferron, infrared analysis , and transmission electron microscopy analysis of lanthanum nitrate can increase the degree of polymerization of the La-PAFC certain catalytic hydrolysis polymerization of aluminum and iron . Sauce wastewater is a high concentration of organic wastewater , the experimental results show that the La - PAFC of sauce wastewater treatment effect is good , better than homemade PAFC La - PAFC of sauce wastewater CODCr, chroma and turbidity have good treatment effect . La-PAFC the CODcr the sauce wastewater removal efficiency greater than 66% greater than 85% , color removal , turbidity is greater than 94% . La-PAFC synthesis conditions on the removal efficiency . This study reflects the principles of solid wastes , and play to the advantage of China 's rare earth resources , and to provide a new way for the comprehensive utilization of blast furnace gas ash and aluminum ash . The project has a certain value of theoretical research and practical application value .

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CLC: > Environmental science, safety science > Processing and comprehensive utilization of waste > General issues > Wastewater treatment and utilization > Additives
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