REGIONAL TREATED BULK WATER - Pestesides区域处理散装水pestesides.ppt

REGIONAL TREATED BULK WATER - Pestesides区域处理散装水pestesides
2022/5/20
1
Relevance of Dioxin formation potential
In p, ash, salt)
+Chloride
High Temperature
Destruction
DxnPrecursor:
PxCP (2,4-D, 2,4,5-T, PCP),
POPs (PCBs, HCB)
BFR (PXDE, HBBz, TBBA)
HalAromatics
? POPs/Pesticide . ?
Thermal-, Chemical reaction,
Oxidation, Condensation
Precursor formation
O
O
Clx
Cly
O
Clx
Cly
PCDD
PCDF
NonPrecursors
HCH, DDT, Aldrin, Toxaphene, Chlordan
Cl/Br Organics
Thermolysis
T ca. 200⁰C
State of Art High Temperature Incineration
Controlled
Combustion
De novo synthesis
catalyst (fly ash) + chloride
O
O
Clx
Cly
O
Clx
Cly
PCDD
PCDF
Soot (incomplete thermal destr.)
HWI: Emissions calculated per ton input material
Air Emission: < g TEQ/ton ( ng TEQ/Nm3) Solid Emission: ca. 30 g TEQ/ton
Measure for all Destruction Technologies!
POPs/Pesticides
+ waste/fuel
State-of-Art HWI
(Cement kiln?)
High Temperature Thermal Destruction Processes
O
O
Clx
Cly
O
Clx
Cly
PCDD
PCDF
High Temp.
Destruction
Processes
Geo MeltTM, Plasma Arc,
In-Situ Thermal Destruction,
Self-Propagating High-Temp. Dehalogenation, TDT- 3RTM,
Combustion
200-600°C
Thermal destruction
(Soot, PAH, Chlorine…)
De novo synthesis
Precursors
OH
Clx
Precursor formation
Unstable Operation, Start-up, Shut down
Integrated total amount?
Assessment needed!
(Continuous monitoring)
Formation of PCDD/F from Precursors for Low Temp.
DxnPrecursor:
PCB (Ox. or OH)
PCBz (Ox. + Cond.)

PxCP, PCP, 2,4,5-T
(Ox., Cond.)

PXDE (Elimination)
HalAromatics
POPs
NonPrecursors
DDT, Aldrin, Endrine, etc.
Cl/Br organics
Thermolysis
T ca. 300⁰C
Condensation reactions,
Thermal stress; Energy
Oxidation, Hydroxylation,
PCDDs/PCDFs
O
Xx
Xy
Cly
O
O
Clx
Cly
O
Clx
Cly
OH
Clx
Clx
Cly
Oxidation
(SCWO, CerOx, Cat. Ox.,
TiO2-UV/solar, etc.)
Reduction/Dechlorination
(BCD, APEG, Sodium Red.,
Solv. e, Cu, Fly ash (Hagenm.)

Photolytic Technologie