scholarly journals Effects of pH, molar ratios and pre-treatment on phosphorus recovery through struvite crystallization from effluent of anaerobically digested swine wastewater

2016 ◽  
Vol 22 (1) ◽  
pp. 12-18 ◽  
Author(s):  
Daegi Kim ◽  
Kyung Jin Min ◽  
Kwanyong Lee ◽  
Min Sung Yu ◽  
Ki Young Park
Keyword(s):  
Phosphorus Recovery ◽  
Swine Wastewater ◽  
Molar Ratios ◽  
Effects Of Ph ◽  
Struvite Crystallization ◽  
Pre Treatment

Development of phosphorus recovery reactor for enlargement of struvite crystals using seawater as the magnesium source

2019 ◽  
Vol 79 (7) ◽  
pp. 1376-1386 ◽  
Author(s):  
Pidchaya Wongphudphad ◽  
Patiya Kemacheevakul
Keyword(s):  
Room Temperature ◽  
Phosphorus Recovery ◽  
Swine Wastewater ◽  
Continuous Reactor ◽  
Recovery Efficiency ◽  
Ph Values ◽  
P Recovery ◽  
Struvite Crystallization ◽  
Optimized Conditions ◽  
Magnesium Source

Abstract Struvite crystallization is an interesting method for the recovery of phosphorus (P) from wastewater. However, the struvite crystals obtained are small, which makes them difficult to separate from wastewater. A continuous reactor for enlarging struvite crystals was developed. Batch-scale experiments were conducted to investigate the optimum factors for the enlargement of struvite crystals. The results of pH experiments showed that P recovery efficiency increased with an increase of pH values (7.6 to 10), while the size of struvite crystals decreased. The results of the Mg:P ratios found that the maximum P recovery efficiency occurred at the maximum ratio of Mg:P. The sizes of struvite crystals were not significantly different. For the variation of temperature values, the results showed that P recovery efficiency and crystal sizes decreased when temperature values increased. Therefore, the optimized conditions for P recovery efficiency and enlargement of struvite crystals for the continuous reactor were pH 8.5 and an Mg:P ratio of 1.2:1 at 30 °C (room temperature). The treated swine wastewater and seawater were continuously fed in at the bottom of the reactor. After 30 days, the size of struvite crystals had increased from 125 μm to 0.83 mm (seven times).

Phosphorus recovery from wastewater by struvite crystallization: Property of aggregates

2014 ◽  
Vol 26 (5) ◽  
pp. 991-1000 ◽  
Author(s):  
Zhilong Ye ◽  
Yin Shen ◽  
Xin Ye ◽  
Zhaoji Zhang ◽  
Shaohua Chen ◽  
...  
Keyword(s):  
Phosphorus Recovery ◽  
Crystallization Property ◽  
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
Sign in / Sign up

Export Citation Format

Share Document