title: [Studies of on-site night soil and kitchen garbage treatment].
abstract: The biological treatment technique of collection at source and disposition on-site of night soil and kitchen garbage were presented. By design project of overall technics, the lab-scale experiments were performed. It was revealed that water consumption of vacuum closestool was about 1 L/time. It consumed 0.4- 0.6L water to shred 1 kg kitchen garbage. Night soil covered 40%, kitchen garbage covered 60% in the influent. Water was controlled at about 93%, the C:N ratio was about 25:1, pH was between 6.2 and 7.3, the optical blend frequency was 6h/d and the overall solid retention time was 28 days in anaerobic digestion reactor. The COD removal rate of mixed supernatant was 91% in anaerobic baffled reactor. It was identified that these phosphorus strains and potassium strains were Bacillus. sp, and biological activated fertilizer was obtained by mixed these strains with digestion sludge which had been dehydrated and deodorized. These strains ability of forming phosphorus and potassium were determined, and the concentration of phosphorus increased 67.5%, potassium increased 33.4%.
authors.affiliation: School of Environmental Science & Engineering, Huazhong University of Science & Technology, Wuhan 430074, China.
authors.forename: Zhu-Lei
authors.initials: ZL
authors.lastname: Chen
authors.forename: Lei
authors.initials: L
authors.lastname: Zhou
authors.forename: Juan
authors.initials: J
authors.lastname: Jiang
authors.forename: Shang-Ling
authors.initials: SL
authors.lastname: Xiong
authors.forename: Liang
authors.initials: L
authors.lastname: Huang
authors.forename: Wei-Min
authors.initials: WM
authors.lastname: Sun
authors.forename: Zhi-Zhong
authors.initials: ZZ
authors.lastname: Lu
authors.forename: Bo
authors.initials: B
authors.lastname: Liao
mesh_terms: D001421:Bacteria, Anaerobic / Q000378:metabolism*; D005243:Feces; D005735:Garbage; D012037:Refuse Disposal / Q000379:methods*