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Application Study on Embedded Immobilized Microorganisms Technology Efficient Nitrification Treatment in Industrial Wastewater

Author: LiYao
Tutor: ZhangZhenJia
School: Shanghai Jiaotong University
Course: Environmental Engineering
Keywords: Immobilized Entrapping particles Nitration rate High strength ammonia wastewater Alkalinity
CLC: X703
Type: Master's thesis
Year: 2012
Downloads: 49
Quote: 0
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Abstract


Latest issued by the national \technology, this paper were integrated industrial park wastewater and high ammonia chemical wastewater as the research object, research immobilized the coated microbial technology industrial wastewater efficient nitrification purpose is to improve ammonia removal efficiency to provide new ideas for the sewage treatment plant and to promote the immobilized and Microbial Technology in industrial wastewater. The experimental main conclusions are as follows: 1. Embedded particles simulated wastewater domestication easy domestication, after 21 days of acclimation, the ammonia nitrogen removal load 8.3mgNH 4 -N/L-pellet? h to 110.2mgNH / sub> . / sup> -N/L-pellet,? h. Embedded particles with mixed activated sludge system better able to adapt to the integrated industrial park wastewater, ammonia nitrogen removal rate of more than 97%, COD removal efficiency of 86%. 3. Temperature of the of entrapping particles with activated sludge system in ammonia removal efficiency of less than traditional activated sludge, and with the continued operation of the system, embedded particles will slowly adapt to the low-temperature environment. 4. Dissolved oxygen on ammonia removal efficiency of the embedded particles and activated sludge system impact in order to ensure the efficiency of removal of ammonia nitrogen in the activated sludge mixed systems and embedded particles, the DO of the system as a whole should be greater than 4mg / L. 5.MBBR carrier and embedding particles of comparative experiments showed that: entrapping particles of the reactor running stabilized ammonia removal efficiency was 95%, higher than 80% of the carrier of the MBBR; TN removal efficiency of the reactor for entrapping particles reaches 90 %, higher than the 75% of the carrier MBBR (Moving Bed Biofilm Reactor). 6 embedded particles in conjunction with the A / O process handle high ammonia chemical wastewater experiment indicates: in alkalinity and denitrification carbon source sufficient conditions, the ammonia nitrogen removal rate of 98%, COD removal rate of 95% or more. Effluent COD, ammonia up to the \Entrapping particles dosing aerobic segment to the A / O process, after 22d domestication, the ammonia nitrogen removal efficiency increased from 70% to 98%; achieve the same effluent ammonia concentration, HRT reduced from 36h to 20h; dosing entrapping particles can effectively improve the system of ammonia removal efficiency and simple carrier dosing, for the upgrading of the existing wastewater treatment plant effluent ammonia standards without expansion of the reaction cell can.

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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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