PERFORMANCE OF CONE-SHAPED FLUIDIZED BED STRUVITE CRYSTALLIZERS IN REMOVING PHOSPHORUS FROM WASTEWATER

PERFORMANCE OF CONE-SHAPED FLUIDIZED BED STRUVITE CRYSTALLIZERS IN REMOVING PHOSPHORUS FROM WASTEWATER
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锥形流化床鸟粪石结晶器去除废水中磷的性能

DOI：
10.13031/2013.18523
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发表时间：
2005
期刊：
Transactions of the ASABE
影响因子：
1.5
通讯作者：
P. Westerman
P. Westerman
中科院分区：
农林科学4区
文献类型：
--
作者：
K. Bowers;P. Westerman

文献摘要

被引文献

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对由连续操作的锥形流化床组成的鸟粪石结晶器的设计进行了测试， 从猪泻湖液体中去除磷的能力。首先测试了实验室规模的装置，在41 ℃和100 ℃下操作。 57 L h-1的泻湖液体，然后现场规模的设备进行了测试，在341和568 L h-1的操作。安排了测试 在一个随机的完全区组设计中，两个引用的泻湖液体流速和三个水平的镁（Mg） 补充和pH值增加作为独立变量。镁补充水平为0、30和60 ppm。氨 用于增加pH，在实验室规模的试验中，将该变量的水平设定为0、100和200 ppm（以氮计） (N)氨。在现场规模的测试中，pH值直接控制，并增加0，0.5和1.0 pH单位。在 实验室规模测试，正磷酸盐磷（OP）去除率范围为1%至80%，总磷（TP）去除率 范围为-5%至56%。在现场试验中，OP去除率为13%~ 82%，TP去除率为0%~ 80%。的 实验室规模的装置表现出更大的去除增加镁补充和pH值的提高，但流动 率无显著影响。在现场规模的装置中，自变量的影响相似，除了 降低流速与更大的清除率相关。
A struvite crystallizer design consisting of a continuously operating, cone-shaped fluidized bed was tested for its ability to remove phosphorus from swine lagoon liquid. A laboratory-scale apparatus was first tested, operating at 41 and 57 L h-1 of lagoon liquid, and then a field-scale apparatus was tested, operating at 341 and 568 L h-1. Tests were arranged in a randomized complete block design, with the two cited lagoon liquid flow rates and three levels each of magnesium (Mg) supplementation and pH increase as independent variables. Levels of Mg supplementation were 0, 30, and 60 ppm. Ammonia was used to increase pH, and in the laboratory-scale tests, levels of this variable were set at 0, 100, and 200 ppm as nitrogen (N) of ammonia. In the field-scale tests, pH was controlled directly, and increased by 0, 0.5, and 1.0 pH units. In the laboratory-scale tests, orthophosphate phosphorus (OP) removal ranged from 1% to 80%, and total phosphorus (TP) removal ranged from -5% to 56%. In the field-scale tests, OP removal was 13% to 82%, and TP removal was 0% to 80%. The laboratory-scale apparatus exhibited greater removal with increasing Mg supplementation and pH augmentation, but flow rate showed no significant effect. The effects of the independent variables were similar in the field-scale apparatus, except that decreasing flow rate was associated with greater removal.