Study on phosphorus recovery from digested piggery wastewater by struvite precipitation
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Study on phosphorus recovery from digested piggery wastewater by struvite precipitation
Hanoi University of ScienceTechnische U.NIVERSITÃT DresdenMaster ThesisSTUDY ON PHOSPHORUS RECOVERY FROMDIGESTED PIGGERY WASTEWATER BY STRUVITE PRECIP Study on phosphorus recovery from digested piggery wastewater by struvite precipitation PITATIONVu Phuong ThuySupervisor: Professor. Dr. Cao The HaHanoi, November 2011ACKNOWLEDGEMENTSIwould like to thank Professor Doctor Cao The Ha. my supervisor, and greatly appreciate his supervision, advice, and guidance from the early stage of this research as well as giving me experiences througho Study on phosphorus recovery from digested piggery wastewater by struvite precipitation ut the work. During the time I was doing the research, he also gave the great opportunity, the best support and conditions in many ways for me to go tStudy on phosphorus recovery from digested piggery wastewater by struvite precipitation
o National Institute for Environment Studies, Japan to participate in the training course “Sustainable Landfill Management ’.Many thanks to all the stHanoi University of ScienceTechnische U.NIVERSITÃT DresdenMaster ThesisSTUDY ON PHOSPHORUS RECOVERY FROMDIGESTED PIGGERY WASTEWATER BY STRUVITE PRECIP Study on phosphorus recovery from digested piggery wastewater by struvite precipitation with analytical techniques.I would like to thank to Dr. Kazuyoshi Suzuki. Dr. Anton Perera, Prof. Phil Westerman for your helps with answering my questions.Finally, I would like to thank to my family, my friends who are always supportive and encourage me during difficult times, especially my mom wh Study on phosphorus recovery from digested piggery wastewater by struvite precipitation o helped me to take care of the experiment that was performed in my house.ABSTRACT1 his research studied on struvite precipitation as a method to remoStudy on phosphorus recovery from digested piggery wastewater by struvite precipitation
ve and recovery phosphorus in the real digested piggery wastewater to form a product as fertilizer. There arc many factors that affect to the precipitHanoi University of ScienceTechnische U.NIVERSITÃT DresdenMaster ThesisSTUDY ON PHOSPHORUS RECOVERY FROMDIGESTED PIGGERY WASTEWATER BY STRUVITE PRECIP Study on phosphorus recovery from digested piggery wastewater by struvite precipitation to investigate the influence of pl I. Mg:P molar- ratio. Ca ions and mixing speed to the phosphorus removal efficiency and the crystalli/alion of struvite. Experiments with lab-scale reactor in batch and continuous mode were also conducted to investigate the kinetic of phosphorus removal, the contro Study on phosphorus recovery from digested piggery wastewater by struvite precipitation lled struvite crystallization and the quality of the generated product. The results showed that, a) At pn at 9.25. the phosphorus removal efficiency wStudy on phosphorus recovery from digested piggery wastewater by struvite precipitation
as the highest, b) Increasing Mg:P molar ratio (from I to 2.5) and stirring speed (from 50 rpm to 100 rpm) led to enhanced phosphorus removal efficienHanoi University of ScienceTechnische U.NIVERSITÃT DresdenMaster ThesisSTUDY ON PHOSPHORUS RECOVERY FROMDIGESTED PIGGERY WASTEWATER BY STRUVITE PRECIP Study on phosphorus recovery from digested piggery wastewater by struvite precipitation will increase the phosphorus removal efficiency and affect the morphology of struvite crystals compared to Mg:Ca of 1:1. 2:1 or 1:0. d) The rate constant of phosphorus removal in the pilot-scale experiment with digested piggery wastewater when Mg ions added estimated as 0.050 min 1 or 3.00 hr '. e) Study on phosphorus recovery from digested piggery wastewater by struvite precipitation It is possible to attach and grow struvite crystals on stainless steel mesh in order to recover it as fertilizer.KEYWORDSStruvite, stirring speed, diStudy on phosphorus recovery from digested piggery wastewater by struvite precipitation
gested piggery wastewater, phosphorus removal, crystallization.TABLE OF CONTENTSPageList of figures...................................................Hanoi University of ScienceTechnische U.NIVERSITÃT DresdenMaster ThesisSTUDY ON PHOSPHORUS RECOVERY FROMDIGESTED PIGGERY WASTEWATER BY STRUVITE PRECIP Study on phosphorus recovery from digested piggery wastewater by struvite precipitation LITERATURE..............................................71.1Introduction to phosphorus and its applications...............71.2Impacts of excessive phosphorus in water streams..............81.3Recovery of phosphorus........................................81.4Phosphorus removal and recovery technique Study on phosphorus recovery from digested piggery wastewater by struvite precipitation s....................91.5Struvite precipitation.......................................131.5.1Background...............................................Study on phosphorus recovery from digested piggery wastewater by struvite precipitation
131.5.2Struvite chemistry in wastewater.........................142GOAL AND OBJECTIVES.............................................172.1Goal..........Hanoi University of ScienceTechnische U.NIVERSITÃT DresdenMaster ThesisSTUDY ON PHOSPHORUS RECOVERY FROMDIGESTED PIGGERY WASTEWATER BY STRUVITE PRECIP Study on phosphorus recovery from digested piggery wastewater by struvite precipitation ..............................193.1Wastewater collection and analysis...........................19Hanoi University of ScienceTechnische U.NIVERSITÃT DresdenMaster ThesisSTUDY ON PHOSPHORUS RECOVERY FROMDIGESTED PIGGERY WASTEWATER BY STRUVITE PRECIPGọi ngay
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