Research On Technology And The Principle Of HalopHilic Bacterial Degradation Of Cyanuric Chloride Wastewater

Cyanuric chloride is massively produced and widely applied in chemistry industry. However,hypersaline wastewater is generated by industrial production of cyanuric chloride.This wastewater,with high salt concentration and fairly unstable PH value and rich in organic matter,is difficult to treat using closed recycling system.In this study,the primary researchment on the technology and principle of halobacterial degradation of wastewater was done.Ten strains of halophilic bacteria were isolated from the liquid and sediment samples,which were from a saltery and a cyanuric chloride factory,and the cells were rod,globular and vibrio shapes.Four strains with better growth state were selected and mixed to form a bacterial complex, using for dynamic simulated test of wastewater.These four halophilic bacteria were identified by microscope observation,Gram staining biochemistry analysis,and the comparison with the Sherlock microbial identification system.The results showed that these four stains belonged to Halomona,Pseudomonas,Bacillus respectively.The best growth conditions of this complex bacteria were determined as: temprature 37℃,pH value 7-9,saline concerntration ranking from 7%to 17%, indicating that these halophilic bacteria were moderately halophilic bacteria.Then these halophilic bacteria were applied to dynamic simulated system comprised of anaerobic filter and bio-contact oxidation tank and underwent domestication.And after this biodegradation system was started,acclimatization and setting up,the removal rate was monitored for 15 days,showing that the removing rates of Ammonia nitrogen,Cyanide and TOC could reach 90.47%,97.62%and 97.06%respectively.