Primary and secondary sludge treatment using ionizing radiation technology in Alexandria, Egypt

2022 ◽  
pp. 110101
Author(s):  
Sameh F. Nakhla ◽  
Anwaar Arafa ◽  
Iman S. Naga ◽  
Mona Mohamed ◽  
Alsherbeny Ha ◽  
...  
Keyword(s):  
Ionizing Radiation ◽  
Sludge Treatment ◽  
Radiation Technology ◽  
Secondary Sludge

Anammox brings WWTP closer to energy autarky due to increased biogas production and reduced aeration energy for N-removal

2008 ◽  
Vol 57 (3) ◽  
pp. 383-388 ◽  
Author(s):  
H. Siegrist ◽  
D. Salzgeber ◽  
J. Eugster ◽  
A. Joss
Keyword(s):  
Hydraulic Retention Time ◽  
Biogas Production ◽  
Sludge Treatment ◽  
N Removal ◽  
Secondary Sludge ◽  
Organic Carbon Source ◽  
Anammox Process ◽  
Dry Weather Flow ◽  
Heterotrophic Denitrification ◽  
Bod Removal

Fifty years ago when only BOD was removed at municipal WWTPs primary clarifiers were designed with 2–3 hours hydraulic retention time (HRT). This changed with the introduction of nitrogen removal in activated sludge treatment that needed more BOD for denitrification. The HRT of primary clarification was reduced to less than one hour for dry weather flow with the consequence that secondary sludge had to be separately thickened and biogas production was reduced. Only recently the ammonia rich digester liquid (15–20% of the inlet ammonia load) could be treated with the very economic autotrophic nitritation/anammox process requiring half of the aeration energy and no organic carbon source compared to nitrification and heterotrophic denitrification. With the introduction of this new innovative digester liquid treatment the situation reverts, allowing us to increase HRT of the primary clarifier to improve biogas production and reduce aeration energy for BOD removal and nitrification at similar overall N-removal.

An innovative sludge management system based on separation of primary and secondary sludge treatment

2004 ◽  
Vol 50 (9) ◽  
pp. 145-153 ◽  
Author(s):  
G. Mininni ◽  
C.M. Braguglia ◽  
R. Ramadori ◽  
M.C. Tomei
Keyword(s):  
Energy Conversion ◽  
Management System ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Nitrogen And Phosphorus ◽  
Sludge Management ◽  
Sludge Treatment ◽  
Gas Treatment ◽  
Primary Sludge ◽  
Secondary Sludge

An innovative sludge management system based on separation of treatment and disposal of primary and secondary sludge is discussed with reference to a sewage treatment plant of 500,000 equivalent person capacity. Secondary sludge, if treated separately from primary sludge, can be recovered in agriculture considering its relatively high content of nitrogen and phosphorus and negligible presence of pathogens and micropollutants. One typical outlet for primary sludge is still incineration which can be optimised by rendering the process auto thermal and significantly reducing the size of the incineration plant units (dryer, fluidised bed furnace, boiler and units for exhaust gas treatment) in comparison with those required for mixed sludge incineration. Biogas produced in anaerobic digestion is totally available for energy conversion when sludge treatment separation is performed, while in the other case a large proportion may be used as fuel in incineration, thus reducing the net electric energy conversion from 0.85-0.9 to 0.35-0.4 MW for the plant considered.

Re-Emerging Field of Lignocellulosic Fiber – Polymer Composites and Ionizing Radiation Technology in their Formulation

2016 ◽  
Vol 56 (4) ◽  
pp. 702-736 ◽  
Author(s):  
Olgun Güven ◽  
Sergio N. Monteiro ◽  
Esperidiana A. B. Moura ◽  
Jaroslaw W. Drelich
Keyword(s):  
Ionizing Radiation ◽  
Polymer Composites ◽  
Radiation Technology ◽  
Lignocellulosic Fiber

SOI active pixel detectors of ionizing radiation-technology and design development

2004 ◽  
Vol 51 (3) ◽  
pp. 1025-1028 ◽  
Author(s):  
J. Marczewski ◽  
K. Domanski ◽  
P. Grabiec ◽  
M. Grodner ◽  
B. Jaroszewicz ◽  
...  
Keyword(s):  
Ionizing Radiation ◽  
Design Development ◽  
Radiation Technology ◽  
Pixel Detectors ◽  
Active Pixel ◽  
Technology And Design

scholarly journals ANALISIS PEMAHAMAN MAHASISWA PENDIDIKAN FISIKA UNIVERSITAS JEMBER PADA MATERI TEKNOLOGI RADIASI IONIZING DALAM PENGAWETAN BAHAN PANGAN

2021 ◽  
Vol 10 (4) ◽  
pp. 156
Author(s):  
Ahmad Nor Hamidy ◽  
Sudarti Sudarti ◽  
Trapsilo Prihandono
Keyword(s):  
Ionizing Radiation ◽  
Physics Education ◽  
Research Method ◽  
Food Preservation ◽  
Multiple Choice Questions ◽  
Education Students ◽  
Radiation Technology ◽  
Data Collection Technique ◽  
Questionnaire Method ◽  
The University

Most Physics Education students do not know about ionizing radiation technology in food preservation. This study aims to determine and analyze the ability of physics education students at the University of Jember in understanding ionizing radiation technology in food preservation. The research method used is a questionnaire method to 50 physics education students at the University of Jember. The research variable is students' knowledge of ionizing radiation technology as food preservation. The data collection technique used is by giving 10 multiple choice questions to 50 students of Physics Education. The results of student answers will be analyzed and represented in the form of tables and pie charts.

Stormwater and lamella settlers: efficiency and reality

1999 ◽  
Vol 39 (2) ◽  
pp. 93-101 ◽  
Author(s):  
A. Daligault ◽  
D. Meaudre ◽  
D. Arnault ◽  
V. Duc ◽  
N. Bardin ◽  
...  
Keyword(s):  
Pollution Control ◽  
Settling Velocity ◽  
Storm Water ◽  
Urban Drainage ◽  
Sludge Treatment ◽  
Secondary Sludge ◽  
The Mean ◽  
One Year

Two settling devices treating rainwater from urban drainage areas and equipped with secondary sludge treatment were monitored over a period exceeding one year. The two devices differ in their design and in the quantity and quality of effluents received. Full analyses over approximately 30 mean samples of the intake and discharge effluents allowed judgment of the mean efficiency of pollution control and the reduction in impact of the storm water. The observed settlement was compared to measurements of settling velocity during several rainfalls. From analyses of the settled or extracted sludge it was possible to characterize the pollutants retained in the sludge. Particular attention was paid to the functioning and operation of the devices.

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