Modeling the adsorption of mercury in the flue gas of sewage sludge incineration

2003 ◽  
Vol 96 (1-3) ◽  
pp. 197-205 ◽  
Author(s):  
Oliver Malerius ◽  
Joachim Werther
Keyword(s):  
Sewage Sludge ◽  
Flue Gas ◽  
Sludge Incineration

New Approach to the Emission of Flue Gases Caused by Sludge Incineration in the Netherlands

1992 ◽  
Vol 25 (4-5) ◽  
pp. 307-314 ◽  
Author(s):  
A. W. van der Vlies ◽  
J. H. B. te Marvelde
Keyword(s):  
Sewage Sludge ◽  
The Netherlands ◽  
Flue Gas ◽  
Flue Gases ◽  
Gas Purification ◽  
Incineration Plant ◽  
New Approach ◽  
Sludge Incineration ◽  
Limited Degree ◽  
The Town

Recycling of sewage sludge will soon no longer be possible in The Netherlands, or will be possible only to a very limited degree. For that reason, part of the sewage sludge will have to be incinerated. This will happen particularly in those areas where tipping space is very limited. A sludge incineration plant is planned to be built in the town of Dordrecht, with a capacity of 45,000 tonnes dry solids per year. The plant will be subject to the very strict flue gas emission requirements of the Dutch Guideline on Incineration. The Guideline demands a sophisticated flue gas purification procedure.

Mercury Removal in the Flue Gas Scrubber of a Fluidized-Bed Sewage Sludge Incinerator

2003 ◽  
Author(s):  
O. Malerius ◽  
J. Werther ◽  
M. Mineur
Keyword(s):  
Sewage Sludge ◽  
Fluidized Bed ◽  
Flue Gas ◽  
Minimum Cost ◽  
Mercury Removal ◽  
Fluidized Bed Combustion ◽  
Mercury Compounds ◽  
Sludge Incineration ◽  
Mercury Capture ◽  
Operation Parameters

The fluidized bed sewage sludge incineration plant of the city of Hamburg started its operation in May, 1997. An acid scrubber was designed as the main sink of mercury. A first modification of the mercury removal concept was presented on the 16th Fluidized Bed Combustion Conference in 2001 [1]. Mercury compounds are now dissolved in the acid scrubber and precipitated with a solution of sodium dimethyldithiocarbamate. In the year 2002 the operation of the acid scrubber has been investigated to optimize the scrubber performance. Suspension pH, amount of precipitant and density of the scrubber suspension were varied to find the optimum operation parameters for the capture of mercury at minimum cost. It was found that with an increase of the density of the scrubber suspension the mercury removal efficiency was enhanced such that the dosage of the precipitant could be decreased significantly. After this optimization process the pollutant streams into the environment were minimized. The paper presents the influence of the scrubber operation parameters on the mercury capture using continuous mercury measurements in the flue gas upstream and downstream of the scrubber. The results of this investigation led to both a minimization of the pollutant streams into the atmosphere and a reduction of the operation cost.

scholarly journals Estimating the Characteristics and Emission Factor of Ammonia from Sewage Sludge Incinerator

2021 ◽  
Vol 18 (5) ◽  
pp. 2539
Author(s):  
Seongmin Kang ◽  
Joonyoung Roh ◽  
Eui-Chan Jeon
Keyword(s):  
Sewage Sludge ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Emission Factor ◽  
Monitoring And Evaluation ◽  
Waste Incineration ◽  
Uncertainty Range ◽  
Sludge Incineration ◽  
Nh3 Emission ◽  
Secondary Substances

In the case of sewage sludge, as direct landfilling was recently prohibited, it is treated through incineration. Among the air pollutants discharged through the incineration of sewage sludge, NOx and SOx are considered secondary substances of PM2.5 and are being managed accordingly. However, NH3, another of the secondary substances of PM2.5, is not well managed, and the amount of NH3 discharged from sewage sludge incineration facilities has not been calculated. Therefore, in this study, we sought to determine whether NH3 is discharged in the exhaust gas of a sewage sludge incineration facility, and, when discharged, the NH3 emission factor was calculated, and the necessity of the development of the emission factor was reviewed. As a result of the study, it was confirmed that the amount of NH3 discharged from the sewage sludge incineration facility was 0.04 to 4.47 ppm, and the emission factor was calculated as 0.002 kg NH3/ton. The NH3 emission factor was compared with the NH3 emission factor of municipal solid waste proposed by EMEP/EEA (European Monitoring and Evaluation Programme/European Environment Agency) because the NH3 emission factor of the sewage sludge incineration facility had not been previously determined. As a result of the comparison, the NH3 emission factor of EMEP/EEA was similar to that of municipal solid waste, confirming the necessity of developing the NH3 emission factor of the sewage sludge incineration facility. In addition, the evaluation of the uncertainty of the additionally calculated NH3 emission factor was conducted quantitatively and the uncertainty range was presented for reference. In the future, it is necessary to improve the reliability of the NH3 emission factor of sewage sludge incineration facilities by performing additional analysis with statistical representation. In addition, the development of NH3 emission factors for industrial waste incineration facilities should be undertaken.

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