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Journal of Clinical and Experimental Toxicology | Volume: 2
December 03-04, 2018 | Dubai, UAE
International Conference on
6
th
International Conference on
Toxicology, Clinical Toxicology & Pharmacology
Recycling & Waste Management
Joint Event
&
M
icro-sieving is a novel rotary belt filtration process, which
separates suspended solids (SS) from raw wastewater.
The openings of the belt filter are typically between 150-350
μm, however, the filtration is primarily based on the cake that is
formed on the belt, due to the accumulation of the separated
SS (which are continuously removed through a scrubbing
device). SS removal yield, for municipal wastewater has been
measured between 30-50%, with parallel BOD reduction of
about 20-30%. The produced biosolids (Primary Sieved Solids-
PSS) have solids content between 35-45% and High Heating
Value (HHV) between 23.5-24.4 MJ/kg, and thus they are
ideal for gasification. However, additional drying is required,
prior to gasification, to achieve solids content of about 85%.
A complete system is under installation at the Wastewater
Treatment Plant of Re-thymno, Greece. Initially, about 5000
m3/d of raw wastewater, will be treated by micro-sieving. The
produced PSS will be further dried and then will be gasified
to produce syngas. The latter will be fed into a co-generation
engine for the production of thermal energy (will be used for
PSS drying) and electric energy. Based on mass and energy
balances, the produced electric energy will be sufficient
to operate the system: micro-sieving-drying-gasification,
while excess electric energy is expected to be produced.
An additional benefit, apart from the energy production, is
the enhancement of the performance of the downstream
WWTP, due to the removal of a large fraction of SS from the
wastewater, prior to the aeration tank. The study is supported
by the European Commission, through the LIFE program: “New
concept for energy self-sustainable wastewater treatment
process and biosolids management (LIFE B2E4SustWWTP)”.
Speaker Biography
PetrosGikas isAssociateProfessorattheSchoolofEnvironmentalEngineering,Technical
University of Crete, Greece, and Director of the “Design of Environmental Processes
Laboratory”. His research interests are focused on municipal, industrial and agricultural
waste and wastewater management. He is specifically active in the design of novel
wastewater treatment processes, with emphasis in low cost – low energy treatment
processes and on water reclamation and reuse applications. He is also working on
energy recovery from biosolids and municipal solid waste, utilizing thermal or biological
processes. He has over 50 publications and over 100 conference participations,
while he is Associate Editor for the Journal of Environmental Management.
e:
petros.gikas@enveng.tuc.g
Petros Gikas
Anthoula Manali
Technical University of Crete, Greece
Electric energy production from primary sieved solids through gasification
Petros Gikas
, Toxicology 2018 & Recycling 2018, Volume 2
DOI: 10.4066/2630-4570-C1-001