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The Experimental Research on Anaerobic Treatment for Dioscorea Zingiberensis Wasterwater

Author: TaoBingXun
Tutor: YangMin
School: Southwest Jiaotong University
Course: Environmental Engineering
Keywords: Turmeric wastewater Anaerobic Dynamics Experimental study
CLC: X703
Type: Master's thesis
Year: 2008
Downloads: 122
Quote: 1
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Abstract


Diosgenin wastewater at high organic strength wastewater plant turmeric rhizome production of saponin in high acidity, high sugar, difficult biochemical degradation, direct emissions be causing serious pollution of natural water bodies. Diosgenin wastewater has not yet developed the technology economically viable processing technology, the development of wastewater treatment technologies is a pressing problem after following paper making, printing and dyeing, brewing, and high concentrations of organic wastewater. Sapogenin wastewater treatment technology research focuses on the study of the process, the lack of research on anaerobic biochemical reaction dynamics. Understanding of the reaction kinetics for diosgenin production in anaerobic wastewater treatment process, the problem of insufficient production site sapogenin comprehensive wastewater study to study the anaerobic biochemical reaction process dynamics influencing parameters temperature, matrix concentration, hydraulic retention time and the middle of the process of degradation of organic matter in the wastewater process control parameters of pH, VFA and bicarbonate salinity model suitable for the wastewater the anaerobic biochemical reaction kinetics, and the kinetic model the middle of the process, based on the study of anaerobic biochemical reactions control the parameters of pH, VFA and bicarbonate, salinity and other operating control strategy. Removal rate is higher than in the paper the following conclusions: (1) sapogenin wastewater thermophilic anaerobic degradation of COD cr temperature; turmeric wastewater containing sugar, sugar in the anaerobic degradation process converted to VFA, makes the VFA concentration in the anaerobic reaction process has been very high, the sugar the anaerobic degradation effect of the wastewater has a great influence; (2) the reaction time in the 96 to 120 hour period of time, COD cr degradation rate is very low, difficult degradable go; turmeric wastewater anaerobic degradation can reach a minimum concentration higher than the minimum concentration of anaerobic degradation of other industrial wastewater; (3) test using strong oxidants trichloroisocyanuric uric acid (TCCA) destruction of tannin, lignin, etc. (?) and shaped molecular structure, and make it into a straight chain easily degradable substances. The test results show that the TCCA can ring complex molecular structure into a straight chain readily biodegradable organic molecules, anaerobic degradation efficiency increased from 47.3% to 64%; (4) strengthen oxidant TCCA after diosgenin wastewater color lighter, the strong oxidant trichloroisocynurate decolorization can destruction caused by organic molecular structure of the sapogenin wastewater color; (5) to select the two groups of different concentrations of wastewater test, according to the test data, their concentration, the anaerobic reaction kinetics equation. The two-equation form of the Monod equation. By the substrate concentration affect the kinetic parameters of the two equations quite different, indicating that the K s .

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