Effective removal of phosphorous from dairy wastewater by struvite precipitation: process optimization using response surface methodology and chemical equilibrium modeling

被引：13

作者：

Lavanya, Addagada ^{[1
]}

Thanga, Ramesh Sri Krishnaperumal ^{[1
]}

机构：

[1] Natl Inst Technol Tiruchirappalli, Dept Civil Engn, Tiruchirappalli, Tamil Nadu, India

来源：

SEPARATION SCIENCE AND TECHNOLOGY | 2021年 / 56卷 / 02期

关键词：

Dairy wastewater; phosphate recovery; struvite; response surface methodology; visual MINTEQ; MAGNESIUM AMMONIUM PHOSPHATE; THERMAL-DECOMPOSITION; LANDFILL LEACHATE; NITROGEN REMOVAL; RECOVERY; CRYSTALLIZATION; FEASIBILITY; WASTEWATERS; SEAWATER; SLUDGE;

D O I：

10.1080/01496395.2019.1709080

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

This study investigated precipitation of struvite from dairy wastewater. The results indicated that pH of the solution exhibited a significant effect on phosphate recovery and purity of struvite. Results showed that 95% of phosphate was recovered from solution at MgO:P molar ratio of 4:1 and pH 9.5. Furthermore, struvite precipitation was optimized using response surface methodology; Visual MINTEQ was used to identify the speciation and precipitation potential of solid phases at different pH. Economic evaluation study revealed that recovery of struvite from phosphorous rich wastewater considerably reduces the chemicals requirement and associated sludge transportation and disposal.

引用

页码：395 / 410

页数：16

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