title: [Study on pretreatment of saponin wastewater by water hyacinthy].
abstract: The pretreatment of the saponin wastewater by water hyacinth (Eichhornia crassipe) was studied. With contrast experiments, the results indicate that after 8 h adsorption by the dry air cells of water hyacinth, the concentration of chlorine ion in the saponin wastewater reduce 10%, chroma reduce 97.2%, pH change from 1.09 to 1.26, COD removal efficiency is 20%. The results indicate that the pretreatment process can improve biodegradability of the saponin wastewater, the biogas rate is 1.5 multiple than before , resulting in the benefit to the follow-up biological treatment. After the adsorption, water hyacinth biogas fermenting also improvement which is used for improve the effect of fermentative.
authors.affiliation: School of Environmental Studies, China University of Geosciences, Wuhan 430074, China.
authors.forename: Ze-tang
authors.initials: ZT
authors.lastname: Li
authors.forename: He-sheng
authors.initials: HS
authors.lastname: Cai
authors.forename: Teng
authors.initials: T
authors.lastname: Ma
authors.forename: Hai-hua
authors.initials: HH
authors.lastname: Wang
mesh_terms: D000327:Adsorption; D001673:Biodegradation, Environmental; D019149:Bioreactors / Q000382:microbiology; D004345:Drug Industry; D031806:Eichhornia / Q000378:metabolism*; D007220:Industrial Waste / Q000032:analysis; D012503:Saponins / Q000032:analysis* / Q000737:chemistry / Q000378:metabolism; D014865:Waste Disposal, Fluid / Q000379:methods*; D014877:Water Pollution, Chemical / Q000517:prevention & control; D018508:Water Purification / Q000379:methods
chemical_list: D007220:Industrial Waste; D012503:Saponins