Preparation of PVA-embedded ammoniated bacteria beads and organic nitrogen transformation
Dou Hong1, Li Jing2, Shen Yaqin3, Qin Xue2, Zhong Weizhang2
1. Shijiazhuang Environment Supervision Center, Shijiazhuang 050022, China; 2. College of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China; 3. Wuxi Institute of Inspection, Testing and Certification, Wuxi 214101, China
Abstract： In order to solve the problem of low activity and easy loss of ammonifying bacteria, polyvinyl alcohol and sodium alginate were used as composite carriers to embed and immobilize ammonifying bacteria AX-1 for removing organic nitrogen. The preparation conditions of immobilized embedded beads were determined by single factor experiments, and they were applied to the experiment of organic nitrogen degradation in chicken manure. The results showed that when the concentration of PVA was 8%, the concentration of sodium alginate was 1.5%, the concentration of CaCl2 was 3%, the dosage of bacteria was 6%, and the crosslinking time was 8 hours, the highest degradation efficiency of organic nitrogen was 40.4%, and the degradation efficiency of organic nitrogen in practical chicken manure wastewater reached 41.80%.
