a new process for the treatment of recalcitrant wastewater
TRANSCRIPT
Un nuovo processo per il trattamento di acque reflue recalcitranti
A new process for the treatment of recalcitrant wastewater
Claudio Di Iaconi, Giuseppe MascoloCNR – Istituto di Ricerca Sulle AcqueVia F. de Blasio, 5 - 70132 Bari, Italy
IRAN: la nuova frontiera del Business, Bari (Italy), 10 Ottobre 2016
Founded in 1968 Member of the Italian National Research Council (CNR), the
largest Research Organization in Italy Highly interdisciplinary (engineers, chemists, biologists,
geologists,…) +150 Researchers, PostDoc, PhD 3.5 million € annual turnover (excluding salaries) from
external sources
IRSA – CNR (Water Research Institute - Italy)
A brief introduction about Water Research Institute of the National Research Council
Montelibretti (Rome)Aquatic Chemistry, Water and Wastewater Treatment, Water
Resources Management
Bari Water and Wastewater Treatment
Water Resources Management
Brugherio (Milan) Pollutant effects, Ecotoxicology,
Ecological classification
IRSA is organized in three branches (i.e. units or laboratories) located in Northern, Central and Southern Italy
Main Research
Areas
Water and Wastewater Treatment
Environmental
Microbiology and Ecology
Sludge and solid wastes
management
Water Quality
Aquatic ecosystems
functioning and response to
impacts
Contaminants fate and effects
Remediation of polluted aquifers
and soils
Water Resources Management
Climate change impacts on water
resources availability
River Basin Management,
irrigation, impacts from agriculture
High sludge production
Complicated treatment schemes
COMMON FEATURES OF CONVENTIONAL WASTEWATER TREATMENT PLANTS
Low effectiveness towards some pollutants Low flexibility and robustness
Unpleasant odour emission
In comparison with the conventional treatment systems, SBBGR (technology is able to:
simplify treatment scheme (in a single stage occurs the entire wastewater treatment train);
reduce area requirement (up to 50%); reduce the sludge production (up to 70%); reduce the total costs (up to 40%); treat biorefractory wastewater by integrating biological
degradation and chemical oxidation
SBBGR
SBBGR
unità tratt. fanghi
SBBGR
SBBGR
unità tratt. fanghi
The new wastewater treatment process: SBBGR (Sequencing Batch Biofilter Granular Reactor):
SBBGR: A LOW FOOT-PRINT SYSTEM
reduce the surface requirement of the treatment plant (primary and secondary units are no longer required, and sludge treatment unit is greatly reduced)
reduce the sludge production;
In comparison with the conventional treatment systems, SBBGR technology is able to:
to treat biorefractory wastewater by integrating biological degradation and chemical oxidation;
SBBGR
sludge treat. unit
sec. clarifier unit
prim
. tre
at. u
nit
The red is showing the area of the plant that will be saved by replacing the conventional biological stage (based on activated sludge process) with SBBGR technology.
inf.
PA
eff.
PR
EV
BIOMASS compartment
WASTEWATERcompartment (air)
SBBGR TECHNOLOGY
O2
high biomass concentrations (up to 50 kg/m3) high sludge age (higher than 200 d)
no secondary clarifier
granular biomass fractiongranular biomass fraction
attached biomass fractionattached biomass fraction
SBBGR TECHNOLOGY
How does SBBGR work?
air (or no air)
recycle
filling
reaction
drawing
eff
EV
inf
cycle
air (or no air)
recycle
filling
reaction
drawing
eff
EV
inf
cycle
air (or no air)
recycle
filling
reaction
drawing
eff
EV
inf
cyclecycle
SBBGR TECHNOLOGY
Chemically enhanced SBBGR with ozone
Chemically enhanced SBBGR with ultraviolet (UV) light
Chemically enhanced SBBGR
Textile wastewater
Tannery wastewater
Landfill leachates
Pharmaceutical wastewater
Applications of the process
before
before
before
before
after
after
after
after