Immobilized Sludge Degradation Of The Improvements Of The Ice Cream Waste Water Produced Hydrogen And Immobilized

Hydrogen as a friendly environment clean energy and high fuel, its application will be more and more wide. As a strategy of sustainable development, Microbial anaerobic fermentation hydrogen technology becomes hotspot of the microbial hydrogen technology research in recent years. Using organic wastewater ferment produce hydrogen technology can not only treat the wastewater but also resource utilization, it is the development direction of water pollution control technology.The paper use ice cream in stamping wastewater as hydrogen substrate, and activated sludge from sewage treatment plants as spawn. Explore the performance of hydrogen production by immobilized microbial degradation ice cream water to determine PVA immobilized preparation technology and abtain the hydrogen production conditions of degradation of ice cream. Test results are as follows:(1) Using traditional PVA and CA immobilized microorganism produce hydrogen is feasible, but compared with suspended photocatalyst, traditional immobilized microorganism method produce hydrogen starts slowly and beads of the mechanical strength and mass transfer performance is poor.(2) Add carbon amount equal to 0.1g, immerse into concentration of 0.02mol/L adipic amine 20min to improve CA ball,24h accumulated hydrogen production is 65.43mL, total sugar removal for 56.14%. The performance of improved CA ball compare with the traditional CA immobilized microorganism and suspended is higher.(3) According to the proportion of PVA and CA for 9:0.9, saturated H3BO3-1%CaCl2 (NaCO3 adjust pH 6.7), and adding SiO2 and CaCO3, the quality score for 3%,0.5% respectively. The 24h cumulative yield hydrogen for 73.58 mL, total sugar removal 62.50%. The hydrogen production performance of improved PVA ball is better than the improved CA immobilized microorganism.(4) The immobilized microorganism ball performance test show that the improved PVA immobilized microorganism ball has the high porosity, high mechanical strength and excellent mass transfer performance. By SEM analysis of the microstructure show the gel environment is suitable for microbial growth and its interior has plenty of porosity.(5) Microbial production affecting factors test showed that the two kinds of improved immobilized microorganism has the higher hydrogen production and total sugar removal of icecream wastewater than suspended microorganisms and the improved PVA immobilized microorganism is the best of the three. The optimal conditions for PVA:reaction system for 35 degrees celsius temperature, the pH of ice cream wastewater is 7.5, the sludge quantity is 25mL, substrate concentration for 3230mg/L. Under this condition,24h cumulative yield hydrogen production is 92.57mL,total sugar removal of wastewater is 67.43%.