To solve the problems of toilet odor,four types of deodorizing microorganisms from different deodorizing strains were screened,and the degradation of hydrogen sulfide(H2S)and ammonia(NH3)in human feces were studied by single and compound microbial agent,aiming to develop a highly efficient deodorizing compound microbial agent.The composition of H2S and NH3 in excreta was determined by Methylene Blue colorimetry and Nessler colorimetry.The results showed that among the four strains,Streptomyces microflavus and Candida utilis had the most significant H2S removal ability with the removal rates both higher than 50%.Bacillus subtilis and Lactobacillus Plantarum showed strong NH3 removal ability,with removal rates of 28.93%and 26.10%,respectively.The compound microbial agent removal ability of H2S and NH3 was further analyzed by orthogonal experiment.The removal rate of H2S in test group 2 reached as high as 72.10%.The removal rate of NH3 in test group 7 reached 44.99%.Finally,data analysis by SPSS software showed that the optimal volume ratio of compound microbial agent to remove H2S was V(Candida utilis):V(Streptomyces microflavus):V(Lactobacillus Plantarum):V(Bacillus subtilis)=2:1:3:2.The optimal volume ratio of compound microbial agent to remove NH3 was V(Candida utilis):V(Streptomyces microflavus):V(Lactobacillus Plantarum):V(Bacillus subtilis)=1:1:3:2.
关键词
人体排泄物/除臭微生物/复合菌剂/硫化氢/氨气
Key words
human feces/deodorant microorganism/compound microbial agent/hydrogen sulfide/ammonia
维普
万方数据