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Study on Alcohol Wastewater Treatment with Eddy Internal Circulation Anaerobic Reactor (EIC)

Author: DingYu
Tutor: HeZhengGuang
School: Zhengzhou University
Course: Municipal Engineering
Keywords: Alcohol Wastewater EIC reactor Granular sludge
CLC: X703
Type: Master's thesis
Year: 2010
Downloads: 94
Quote: 0
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Abstract


This pilot study aims to explore the the cyclone inner loop anaerobic reactor (EIC) Treatment of Alcohol Effluent feasibility and process. Swirling circulation reactor additional swirl water distribution means on the basis of the conventional IC reactor, improved mixing flow pattern of the material within the reactor, is a new and efficient anaerobic reactor. In this study, the the EIC reactor homemade lasted six months, under laboratory conditions, research of the EIC reactor Treatment of Alcohol Effluent boot process, hydraulic characteristics and the characteristics of the granular sludge. : Alcohol the EIC reactor processing wastewater with a short start-up period, the processing advantages of high efficiency, stable operation and provide a new approach for the treatment of alcohol wastewater. The main content of this paper and the results are as follows: (1) in the EIC reactor startup study, the use of anaerobic digested sludge as seed sludge of municipal wastewater treatment plant influent COD concentration to a low concentration, low flow gradually increase and volume load. Acclimated sludge volume load of 2kgCOD / (m3-d) the entire domestication process lasted 50 days, the kinds of mud into a loose floc certain methanogenic activity of granular sludge. The sludge acclimation after entering the reactor start-up phase, the start-up period of 40 days, the reactor volume load of reach 12kgCOD / (m3-d), COD removal rate stabilized at 83%, the gas production rate of .3251 / (l · d), continuous within cycle phenomenon, marking the start of the EIC reactor completed. (2) in the EIC hydraulic characteristics of the reactor study investigated the reactor anti-performance hydraulic shock loads HRT water quality changes in the acidity of the stable operation phase, and the hydraulic characteristics of the reactor, the simple analysis . The tests showed that: volume load in the influent concentration fluctuation the EIC reactor can withstand 20kgCOD / (m3 · d), optimum hydraulic retention time of 6.6h COD removal efficiency can reach 82%. (3) reactor stable operational phase, anaerobic granular sludge granulation state and the settling properties, mainly color to gray-black, dense structure, with high methanogenic activity. Granular sludge settling velocity of up to 140m / h, VSS / TSS by inoculation of 0.60 to 0.88, the maximum specific methanogenic activity of up to 1.036gCODCH4 / g (VSS · d). Scanning electron microscopy revealed granular sludge to the methanogenic sarcina Brevibacterium filamentous bacteria and methanogenic main advantage flora, the surface covered by a large number of filamentous bacteria, to methanogenic filamentous bacteria.

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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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