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Effect of powdered activated carbon technology on short-cut nitrogen removal for coal gasification wastewater.

Abstract：

:A combined process consisting of a powdered activated carbon technology (PACT) and short-cut biological nitrogen removal reactor (SBNR) was developed to enhance the removal efficiency of the total nitrogen (TN) from the effluent of an upflow anaerobic sludge bed (UASB) reactor, which was used to treat coal gasification wastewater (CGW). The SBNR performance was improved with the increasing of COD and TP removal efficiency via PACT. The average removal efficiencies of COD and TP in PACT were respectively 85.80% and 90.30%. Meanwhile, the NH3-N to NO2-N conversion rate was achieved 86.89% in SBNR and the total nitrogen (TN) removal efficiency was 75.54%. In contrast, the AOB in SBNR was significantly inhibited without PACT or with poor performance of PACT in advance, which rendered the removal of TN. Furthermore, PAC was demonstrated to remove some refractory compounds, which therefore improved the biodegradability of the coal gasification wastewater.

journal_name

Bioresour Technol

journal_title

Bioresource technology

authors

Zhao Q,Han H,Xu C,Zhuang H,Fang F,Zhang L

doi

10.1016/j.biortech.2013.04.051

subject

Has Abstract

pub_date

2013-08-01 00:00:00

pages

179-85

eissn

0960-8524

issn

1873-2976

pii

S0960-8524(13)00658-5

journal_volume

142

pub_type

杂志文章

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