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AGENDA VERTAC INCINERATOR EVALUATION TEAM MEETING · PDF fileAGENDA VERTAC INCINERATOR EVALUATION TEAM MEETING 2 ... DATE 12/17/tO 12/1B/W 12/30/BO 12/31/80 1W1 ... • Mass balance

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  • AGENDAVERTAC INCINERATOR EVALUATION

    TEAM MEETING 2/27/91

    I. Introduction and Objectives ( 9 : 3 0 - 9 : 4 5 )

    II. Report from Team Members - approx. 20 min. each ( 9 : 4 5 - Noon)

    Lunch Break (Noon - 1:00)

    III. Informal Roundtable Discussion (1:00 - 2 : 3 0 )

    mechanisms for presence of dioxins/furans in stackemissions

    ^mechanisms for increased frequency of dioxin detects in ^ambient air monitors during production burn 0

    mechanisms for presence of dioxins/furans in salt and ashresiduals 0

    0mechanisms for presence of metals in the salt and ashresiduals

    Break ( 2 : 3 0 - 2: 4 5 )

    IV. Discuss and Prioritize Recommendations ( 2 : 4 5 - 4:30 )

    V. Timetable for Implementing and Testing Recommendations( 4 : 3 0 -5:30)

  • VERTAC TECHNICAL ASSISTANCE TEAM MEETING

    EPA REGION VIDALLAS, TEXAS

    FOCUS ENVIRONMENTAL, INC.KNOXVILLE, TENNESSEE

    PROJECT NO. 029205*

    FEBRUARY 27, 1992

  • PROJECT ISSUES

    PROCESS ISSUES:

    . ASH QUALITY (DIOXINS, METALS)

    . BAGHOUSE SOLIDS QUALITY (DIOXINS, METALS)

    . STACK EMISSIONS (DIOXINS)

    . DIOXIN DESTRUCTION AND REMOVAL EFFICIENCY

    AMBIENT AIR ISSUES:

    . DETECTABLE DIOXIN LEVELS IN OFFSITE MONITORS

    SAMPLING AND ANALYSIS ISSUES:

    . DATA INTERPRETATION

  • PROCESS EVALUATION

    2

  • QUALITY OF TREATED SOLIDS

    INCINERATOR ASH

    DIOXINS

    CADMIUM, CHROMIUM, LEAD (TCLP)

    BAGHOUSE SOLIDS

    DIOXINS

    CADMIUM, CHROMIUM, LEAD (TCLP)

    3

  • POTENTIAL PROCESS PROBLEMS

    FEED SYSTEM:

    . NON-UNIFORM LIQUIDS COMPOSITION

    . SOLIDS BLENDING: HEAT INPUT CONTROL

    SOLIDS BLENDING: METALS INPUT CONTROL

    SOLIDS FEED RATE CONTROL

    COMBUSTION SYSTEM:

    . LIQUID WASTE ATOMIZAT10N

    SUB-STOICHIOMETRIC OXYGEN IN KILN

    SLAG RING AT KILN EXIT

    AIR POLLUTION CONTROL:

    CHLORINE EQUILIBRIUM CONCENTRATION

    . DENOVO DIOXIN SYNTHESIS IN APC SYSTEM

    . STACK GAS DOWNWASH

    4

  • POTENTIAL PROCESS IMPROVEMENTS

    FEED SYSTEM:

    . SEGREGATE AND CAMPAIGN PLASTIC DRUMS

    . ORGANIC SOLIDS SEGREGATION AND CATEGORIZATION

    . MIX ORGANIC LIQUIDS IN FEED TANKS

    . FEED SLUDGES WITH POSITIVE DISPLACEMENT PUMP

    oin\oo

    USE AIR ATOMIZED ORGANIC FEED NOZZLE ^

    FEED AQUEOUS WASTE CONTINUOUSLY

    WATER INJECTION INTO KILN

    REPROCESS ASH UNDER OXIDIZING CONDITIONS

    BURNER AT REAR END OF KILN TO MELT SLAG RING

    RE-DESIGN OF SCO (KILN GAS/SCC BURNER GAS MIXING)

    COMBUSTION SYSTEM:

    AIR POLLUTION CONTROL:

    . LOWER BAGHOUSE INLET TEMPERATURE

    . MINIMIZE AIR LEAKAGE

    . ACTIVATED CARBON ADDITION TO BAGHOUSE

    . VENT SOLIDS TRANSFER FROM BAGHOUSE

    . INCREASE STACK HEIGHT

    5

  • PROCESS ANALYSIS APPROACH

    WASTE COMPOSITION ESTIMATION

    Cl DATA

    HEAT OF COMBUSTION DATA

    2,4-D ULTIMATE ANALYSIS

    . PROCESS MASS AND ENERGY BALANCE

    COMBUSTION SYSTEM

    - AIR POLLUTION CONTROL SYSTEM

    . HALOGEN HALIDE EQUILIBRIUM CALCULATIONS

    6

  • MASS AND ENERGY BALANCE

    . KILN SOLIDS FEED RATE 1,300 LB/HR

    KILN AQUEOUS FEED RATE 335 LB/HR

    . KILN EXIT GAS TEMPERATURE 1,800 F

    . SCC EXIT GAS TEMPERATURE 2,250 F

    . SCC EXCESS OXYGEN 5 PERCENT

  • ******* PRELIMINARY *******

    PROCESS ANALYSIS - SUBSTOICHIOMETRIC OPERATION

    . APPROXIMATELY 65 % OF ORGANICS OXIDIZED IN KILN

    KILN HEAT RELEASE RATE 4.92 MM BTU/HR

    . KILN VOL. HEAT RELEASE RATE 5.100 BTU/HR-FT3

    . KILN GAS VELOCITY 3.3 FT/SEC

    . SCC HEAT RELEASE RATE BTU/HR-FT3

    . SCC VOL. HEAT RELEASE RATE 22.484 BTU/HR-FT3

    . SCC GAS VELOCITY 27 FT/SEC

    SCC GAS RESIDENCE TIME 1.85 SECONDS

    . ESTIMATED Cl-2 IN SCC EXIT GAS _ PPMy

    * NOTE: MODEL CALIBRATED USING DATA FROM TRIAL BURNPROGRAM

    8

  • ******* PRELIMINARY *******

    PROCESS ANALYSIS - OXIDATIVE OPERATION

    . KILN OPERATING AT 9 % EXCESS OXYGEN

    KILN HEAT RELEASE RATE 9.5 MM BTU/HR

    . KILN VOL. HEAT RELEASE RATE 9,900 BTU/HR-FT3

    . KILN GAS VELOCITY 8.6 FT/SEC

    . SCC HEAT RELEASE RATE 26.5 MM BTU/HR

    . SCC VOL. HEAT RELEASE RATE 16,000 BTU/HR-FT3

    . SCC GAS VELOCITY 20 FT/SEC

    . SCC GAS RESIDENCE TIME 2.44 SECONDS

    . ESTIMATED CL^ IN SCC EXIT GAS _ PPMy

    * NOTE: MODEL CALIBRATED USING DATA FROM TRIAL BURNPROGRAM

    9

  • AMBIENT MONITORING

    10

  • POTENTIAL AIR CONTAMINATION SOURCES

    STACK EMISSIONS

    . FEED PREPARATION

    ASH HANDLING

    COMBUSTION GAS PUFFS (KILN SEALS)

    SPRAY DRYER/BAGHOUSE RESIDUE (SALT) HANDLING

    11

  • AMBIENT AIR MONITORING ANALYSIS - STACK EMISSIONS

    U.S. EPA SCREEN DISPERSION MODEL

    EMISSIONS TO REACH DETECTION LEVEL - 2,000 pg/m3

    EMISSIONS TO REACH ACTION LEVEL - 12,000 pg/m3

    MEASURED EMISSIONS TOTAL TCDDs - 1,869 pg/m3 (MAX)(10/11/91)

    * NOTE: RESULTS BASED ON RECEPTOR 1,000 METERSDOWNWIND

    12

  • AMBIENT AIR MONITORING ANALYSIS - FUGITIVE EMISSIONS

    . TO BE COMPLETED

    13

  • AMBIENT EMISSIONS ASSESSMENT RECOMMENDATIONS

    . ANALYZE SOLIDS ON HITS FILTERS FOR SODIUM

    . ANALYZE RATIOS OF OTHER ORGAN1CS/DIOX1NS DURINGHITS AND NORMAL OPERATION

    . CHECK WIND SPEED AND DIRECTION DURING HITSEVENTS

    . CHECK KILN PRESSURE RECORDS DURING HITS EVENTS ^in

    . VENT SOLIDS TRANSFER FROM BAGHOUSE \0

    oo

    14

  • SAMPLING AND ANALYSIS

    15

  • SAMPLING AND ANALYSIS DATA

    INCINERATOR ASH AND SALT

    - DIOXINS AND FURANS (TOTAL PCDDs/PCDFs)

    - ORGANIC COMPOUNDS (VOUSEMIVOL, PESTICIDES,

    HERBICIDES, PCBS

    - INORGANICS (As, Ba, Cd, Cr, CN, Pb, Hg, Ni, Se, Ag) ^

    \oo0

    . INCINERATOR EMISSIONS

    - TRIAL BURN POHCs (HCB. TCB)

    - DIOXINS AND FURANS (TOTAL PCDDs/PCDFs)

    . AMBIENT AIR MONITORING

    DIOXINS (TOTAL TETRA ISOMERS)

    ORGANIC COMPOUNDS (HERBICIDES, SEMIVOLS)

    PART1CULATES (PM^Q, LEAD, CHROMIUM, CADMIUM)

    16

  • AMBIENT AIR TCDD DATA - SEPTEMBER '91 JANUARY '92

    . SAMPLE SETS - 24

    TOTAL POSSIBLE SAMPLES - 144

    . SAMPLE ANALYSIS RESULTS - 139

    ANALYSES BELOW DETECTION LIMITS ( 0.3 pg/m3) - 129

    C\J

    . DETECTABLE CONCENTRATIONS - 10 ^\o

    . DETECTABLES IN RANGE OF 0.353 TO 0.639 pg/m3 - 9 ^

    3 3 . DUPLICATE ANALYSIS OF 0.639 pg/m3 GAVE 0.440 pg/m3

    . SINGLE HIGHEST CONCENTRATION - 1.902 pg/m3

    . SITE ACTION LIMIT - 3.0 pg/m3

    . NO OBSERVED EFFECT LEVEL (NOEL) - 5.5 pg/m3

    6 OF 9 HITS DURING SAME 3 DAY PERIOD

    . UNUSUAL TO GET HITS IN ALL DIRECTIONS(TORNADO THEORY)

    * NOTE: DUPLICATE SAMPLES NOT INCLUDED INSTATISTICS

    17

  • V/?-TI.LOK(

    2./^/^P-^ i

    Table 1. Comparison of Available Data on Total TCDD Concentrations in Solid Residues, Stack Gas Emissions, and Ambient Airat Vertac Superfund Site

    DATE

    1880

    08/17/80

    08/23/80

    08/2W80

    10/01/80

    10/11(80

    10/13/80

    11/01/80

    11/02/80

    11/03/80

    11/04/80

    11/07/80

    11/08/80

    11/08/80

    11 /11 /80

    11/13/80

    11/14/80

    11/18/80

    11/21/80

    11/23/80

    11/26/80

    11/20/80

    11/27/80

    11/21/80

    11/28/80

    11/30/80

    12/01(80

    12/02/80

    12/03/80

    12/04/80

    12/06/80

    12/00/80

    12/07/80

    12/OJ/80

    12/10/00

    12/12/80

    12/14/80

    12/16/80

    SALT

    Told

    TCOO

    (ppl)

    33.2

    B.7

    30.2

    34.0

    133

    31

    818

    2140

    33.2

    31.8

    88.6

    1280

    34.7

    22.7

    101

    61.1

    47.3

    7

    40.3

    40.2

    18.8

    66.8

    13

    AmTold

    TCOO

    (ppl)

    34.3

    SM

    2340

    1740

    1f80

    812

    40

    1070

    STACK OAS

    TomPCOOiPCOF

    (n^dicq

    O.OfX

    0.131

    0.023

    0.183

    1.368

    0.313

    0.643

    1.178

    1.401

    1.300

    0.070

    0.4

    0.414

    0.3B7

    078B

    0.36*

    2,,7,*-TCOO

    (pll/dttcm)

    N0(212)

    NO (31B)

    N0(10)

    N0(212)

    N0(202)

    N0(264)

    N0 (242)

    N0(272)

    N0(284)

    N0(142)

    NOW

    N0 (14)

    N0(6)

    N0(30

    ND (10)

    N0(7)

    AMBIENT AIR (Totel TCOO)

    TRAILER

    (py/curn^

    Q.07

    O.OB

    WEATHER

    (pg/eum)

    6.43

    0.30

    ww(py/wm)

    SOUTH

    (pg/eum)

    0

    WATER TWR

    (pg/ou m)

    0.32

    0.03

    0 0 6

    WATER TWR

    (py/cu m)

    6 ?

    QHEQORV

    (p9/cu m)

    COMMENTS

    BaghouM/iprydryt cland 11/16/80

    Baghour/lpray dryr d*an*d 11/20/80

    Tilal Burn Tct 1 - 1

    Trial Burn T*l 1-2

    Trial Burn TMI 1-3

  • Vfr/

  • TECHNICAL ASSISTANCE TEAM RECOMMENDATIONS

    . ANALYTICAL CHEMIST

    . TOXICOLOGIST/RISK ASSESSMENT SPECIALIST

    18

  • VERTAC SUPERFUND SITEASSESSMENT OF INCINERATION

    OPERATIONS

    PREPARED FOR:

    * U.S.EPAREGION VI

    DALLAS, TEXAS

    PREPARED BY:CHsMHILL

    DENVER, CO&

    EER CORPORATIONDURHAM, NC

    ?rgyQVironmental FEBRUARY 27,1992research Corporation

    0 0 0 6 6 6

  • OBJECTIVES

    Identify approaches for eliminating or mitigating ambient air hits for traceorganics and toxic metals

    Suggest operational and/or equipment modifications at the VERTACSuperfund site to reduce emissions and improve solid waste residuecharacteristics

    Identify near term testing that could help facilitate above objectives andmitigate public concer

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