MODELING STRUVITE PRECIPITATION IN ANAEROBIC TREATMENT SYSTEMS

被引：64

作者：

LOEWENTHAL, RE

KORNMULLER, URC

VANHEERDEN, EP

机构：

来源：

WATER SCIENCE AND TECHNOLOGY | 1994年 / 30卷 / 12期

关键词：

ACETATE; ALKALINITY; ANAEROBIC DIGESTION; CAPACITY PARAMETERS; CARBON DIOXIDE; MAGNESIUM AMMONIUM PHOSPHATE; PARTIAL PRESSURE; PRECIPITATION POTENTIAL; STRUVITE; WEAK ACID EQUILIBRIUM CHEMISTRY;

D O I：

10.2166/wst.1994.0592

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Struvite precipitation is common in waste water systems containing high concentrations of dissolved orthophosphates, free and saline ammonia and magnesium ions, such as in anaerobic fermentation systems, often leading to severe fouling. It appears that a reduction of the partial pressure of CO2, ie. pCO(2) is a trigger mechanism for struvite precipitation. An algorithm was developed, based on equilibrium chemistry, to quantitatively predict the struvite precipitation potential of the water in such a process. This was then extended, to predict the change in state together with precipitation potential due to chemical perturbations, particularly variations of pCO(2). Experimental verification of the algorithms is presented.

引用

页码：107 / 116

页数：10