Kalyuzhnyi S, Sklyar V, Epov A, Arkhipchenko I, Barboulina I, Orlova O, Klapwijk A
Dept. of Chemical Enzymology, Chemistry Faculty, Moscow State University, 119899 Moscow, Russia.
Water Sci Technol. 2002;45(12):79-87.
Combined biological and physico-chemical treatment of filtered pig manure wastewater has been investigated on the pilot installation operated under ambient temperatures (15-20 degrees C) and included: i) UASB-reactor for elimination of major part of COD from the filtrate; (ii) stripper of CO2 + fluidised bed crystallisator for phosphate (and partially ammonia) removal from the anaerobic effluents in the form of insoluble minerals-struvite (MgNH4PO4) and hydroxyapatite (Ca5(PO4)3OH); (iii) aerobic-anoxic biofilter for polishing the final effluent (elimination of remaining BOD and nutrients). Under overall hydraulic retention time (HRT) for the system of 7.8 days, the total COD, inorganic nitrogen and total phosphorous removals were 88, 65 and 74%, respectively. A decrease of the overall HRT to 4.25 days led to 91, 37 and 82% removals for total COD, inorganic nitrogen and total phosphorus removals, respectively. The approaches for further improvement of effluent quality are discussed.
在中试装置上研究了在环境温度（15 - 20摄氏度）下对过滤后的猪粪废水进行生物和物理化学联合处理，包括：i）UASB反应器，用于去除滤液中大部分化学需氧量（COD）；ii）二氧化碳汽提器 + 流化床结晶器，用于以不溶性矿物鸟粪石（MgNH4PO4）和羟基磷灰石（Ca5(PO4)3OH）的形式从厌氧流出物中去除磷（部分去除氨）；iii）好氧 - 缺氧生物滤池，用于对最终出水进行抛光（去除残留的生化需氧量（BOD）和营养物质）。在系统总水力停留时间（HRT）为7.8天的情况下，总COD、无机氮和总磷的去除率分别为88%、65%和74%。将总HRT降至4.25天导致总COD、无机氮和总磷的去除率分别为91%、37%和82%。讨论了进一步提高出水水质的方法。
