Ammonia and phosphorous precipitation through struvite crystallization from swine wastewater with high suspended solid

2018 ◽  
Vol 116 ◽  
pp. 258-266 ◽  
Author(s):  
Ling Ma ◽  
Shoujun Yuan ◽  
Feng Ji ◽  
Wei Wang ◽  
Zhen-Hu Hu
Keyword(s):  
Suspended Solid ◽  
Swine Wastewater ◽  
Struvite Crystallization

scholarly journals The Technology of Phosphorous Removal and Recovery from Swine Wastewater by Struvite Crystallization Reaction

2006 ◽  
Vol 40 (4) ◽  
pp. 341-349 ◽  
Author(s):  
Kazuyoshi SUZUKI ◽  
Yasuo TANAKA ◽  
Kazutaka KURODA ◽  
Dai HANAJIMA ◽  
Yasuyuki FUKUMOTO ◽  
...  
Keyword(s):  
Swine Wastewater ◽  
Phosphorous Removal ◽  
Crystallization Reaction ◽  
Struvite Crystallization ◽  
Removal And Recovery

Ammonium nitrogen removal from slurry-type swine wastewater by pretreatment using struvite crystallization for nitrogen control of anaerobic digestion

2004 ◽  
Vol 49 (5-6) ◽  
pp. 215-222 ◽  
Author(s):  
B.U. Kim ◽  
W.H. Lee ◽  
H.J. Lee ◽  
J.M. Rim
Keyword(s):  
Phosphoric Acid ◽  
Magnesium Oxide ◽  
Nitrogen Removal ◽  
High Capacity ◽  
Ammonium Nitrogen ◽  
Swine Wastewater ◽  
Molar Ratio ◽  
High Concentration ◽  
Nitrogen And Phosphorus ◽  
Struvite Crystallization

Precipitation of ammonium together with phosphate and magnesium is a possible alternative for lowering the nitrogen content of wastewater. In this study we examine the removal of ammonium nitrogen and phosphorus from slurry-type swine wastewater containing high concentrations of nutrients by the addition of phosphoric acid along with either calcium oxide or magnesium oxide, which leads to the crystallization of insoluble salts such as hydroxyapatite and struvite. The struvite crystallization method showed a high capacity for the removal of nitrogen when magnesium oxide and phosphoric acid were used as the magnesium and phosphate sources, respectively. When it was applied to swine wastewater containing a high concentration of nitrogen, the injection molar ratio of Mg2+:NH4+:PO43- that gave maximum ammonium nitrogen removal was 3.0:1.0:1.5.

scholarly journals Possibility of Recovering of Phosphorus Using Struvite Crystallization from Swine Wastewater

2011 ◽  
Vol 48 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Eisuke KAWAMURA ◽  
Makoto TANABE ◽  
Kazuyoshi SUZUKI
Keyword(s):  
Swine Wastewater ◽  
Struvite Crystallization

scholarly journals Removal and Recovery of Phosphorus Using Struvite Crystallization from Thickener Effluent of Swine Wastewater Treated with Coagulant and Machine Separation

2010 ◽  
Vol 47 (4) ◽  
pp. 187-197
Author(s):  
Yuichiro WAKIYA ◽  
Minoru ISHIDA ◽  
Toshihiro UCHIDA ◽  
Sachiko FURUTA ◽  
Masanobu SEKIDO ◽  
...  
Keyword(s):  
Swine Wastewater ◽  
Struvite Crystallization ◽  
Removal And Recovery

Optimization of struvite crystallization to recover nutrients from raw swine wastewater

2014 ◽  
pp. 1-7
Author(s):  
Qintie Lin ◽  
Zhiliang Chen ◽  
Jieting Liu ◽  
Bing Tang ◽  
Jiale Ye ◽  
...  
Keyword(s):  
Swine Wastewater ◽  
Struvite Crystallization

scholarly journals Design and Optimization of Fluidized Bed Reactor Operating Conditions for Struvite Recovery Process from Swine Wastewater

Processes ◽  
2020 ◽  
Vol 8 (4) ◽  
pp. 422 ◽  
Author(s):  
Soomin Shim ◽  
Seunggun Won ◽  
Arif Reza ◽  
Seungsoo Kim ◽  
Naveed Ahmed ◽  
...  
Keyword(s):  
Fluidized Bed ◽  
Recovery Process ◽  
Operating Conditions ◽  
Swine Wastewater ◽  
Molar Ratio ◽  
Circulation Rate ◽  
N Recovery ◽  
Operational Parameters ◽  
Struvite Crystallization ◽  
Reactor Operating

Struvite crystallization using fluidized bed reactors (FBRs) is one of the most commonly used methods for nutrient recovery from different waste streams. However, struvite recovery from swine wastewater containing much higher solids using FBR has not been studied extensively. In this study, we therefore designed and optimized the key operating conditions parameters, i.e., pH (9.0, 9.5, and 10.0), circulation rate (CR) (1.5, 3.0, and 4.5 L/Lreactor·h), and hydraulic retention time (HRT) (1, 3, and 5 h) of FBR to ensure efficient nutrient removal and struvite crystallization from swine wastewater using response surface methodology (RSM) with central composite design (CCD) as experimental design. A magnesium/phosphorus (Mg/P) molar ratio of 1.3 was maintained with MgCl2 according to ortho-phosphate (O-P) concentration of influent and an air diffuser was set to supply air with 0.03 L air/Lreactor·min. The O-P recovery efficiency of over 91% was achieved through the entire runs. Among the operational parameters, pH did not show any significant effect on NH4-N recovery, particle size, and struvite production rate (SPR). The optimal CR over 2.94 L/Lreactor·h was found to be appropriate for efficient removal of nutrients and struvite crystallization. While optimizing the HRT, priority of the process operation such as the production of larger struvite particles or increased struvite productivity should be considered. Therefore, the optimal operational parameters of pH 9.0, CR > 2.94 L/Lreactor·h, and HRT of 1 or 5 h were chosen to obtain better responses through RSM analyses. The findings of this study would be useful in designing and operating either pilot- or full-scale FBR for struvite crystallization from swine wastewater.

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