Fluid bed biological nitrification and denitrification in high salinity wastewater

被引：48

作者：

Vredenbregt, LHJ

Nielsen, K

Potma, AA

Kristensen, GH

Sund, C

机构：

[1] VKI,DK-2970 HORSHOLM,DENMARK

[2] KRUGER AS,DK-2860 SOBORG,DENMARK

来源：

WATER SCIENCE AND TECHNOLOGY | 1997年 / 36卷 / 01期

关键词：

carrier; chloride; denitrification; flue gas desulphurisation; fluid bed; nitrification; nitrite; saline; scaling; wastewater;

D O I：

10.1016/S0273-1223(97)00341-7

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Wastewater from wet lime(stone)-gypsum flue gas desulphurisation (FGD) processes in coal-fired power plants contains nitrate. Where case selective catalytic reduction (SCR) of NO, is applied the wastewater can also contain ammonia. For the removal of both nitrate and ammonia, biological processes are an attractive option. A bottle-neck for application of biological processes might be the high chloride concentration and relatively high temperature of the wastewater. Therefore research work was performed in fluid-bed reactors at pilot-plant scale for both biological nitrification and denitrification. Biological nitrification was studied up to 34 gCl(-)/l and nitrite was the main product formed. Biological denitrification was effective up to at least 45 gCl(-)/l. Both nitrate and nitrite were removed effectively. (C) 1997 IAWQ. Published by Elsevier Science Ltd.

引用

页码：93 / 100

页数：8