Tajiguas Resource Recovery Project 2018 CAPCOA Engineering - - PowerPoint PPT Presentation

▶
tajiguas resource recovery project
SMART_READER_LITE
LIVE PREVIEW

Tajiguas Resource Recovery Project 2018 CAPCOA Engineering - - PowerPoint PPT Presentation

Oct 05, 2022 269 likes •609 views

Tajiguas Resource Recovery Project 2018 CAPCOA Engineering Symposium Kevin Brown Air Quality Engineer III Santa Barbara County Air Pollution Control District October 30, 2018 1 Presentation Overview Background Process Description

slide-1
SLIDE 1

Tajiguas Resource Recovery Project

2018 CAPCOA Engineering Symposium

Kevin Brown Air Quality Engineer III Santa Barbara County Air Pollution Control District October 30, 2018

1

slide-2
SLIDE 2

Presentation Overview

  • Background
  • Process Description
  • Emission Controls
  • Permit Highlights
  • Project Challenges
  • Summary

2

slide-3
SLIDE 3

3

slide-4
SLIDE 4

Landfill Background

4

  • On the coast
  • Reaching

capacity in the near future

  • Replacement

landfill not finalized

slide-5
SLIDE 5

Regulatory Background

5

slide-6
SLIDE 6

Process Description

6

slide-7
SLIDE 7

Process Streams

7

slide-8
SLIDE 8

8

slide-9
SLIDE 9

Materials Recovery Facility (MRF)

  • Tipping Area

– Accepts 290,000 TPY combined waste

  • Materials Sorting Area

– Recyclables – Organics – Residual waste

  • Paper Dryer

9

slide-10
SLIDE 10

What is the Anaerobic Digestion Process?

  • Decomposition of waste in an oxygen-free environmental
  • Naturally occurs in the landfill
  • Process is sped up using percolate and creating an ideal

environment

  • Byproduct is digester gas

10

slide-11
SLIDE 11

Anaerobic Digestion Facility (ADF)

11

  • 16 heated, enclosed digesters
  • Dimensions: 100’ L x 22’ W x 16’ H
  • 710 ton capacity
  • 28 day digestion cycle
  • Video of Digester Operations
slide-12
SLIDE 12

12

slide-13
SLIDE 13

Combined Heat and Power Engines

13

  • Digester Gas CHP Engines:

– Two GE/Jenbacher JMS 416 B82 engines – 1,573 bhp/1,141 kWe each

  • Landfill Gas CHP Engines:

– Two GE/Jenbacher JMG 420 B82 engines – 1,966 bhp/1,429 kWe each

  • Electricity used for onsite needs
  • r sold to the grid
  • Heat used for digesters or paper

recycling

slide-14
SLIDE 14

Compost Management Unit

14

  • Twenty-six 230’ L x 16’ W

x 12’ H windrows

  • Cured six to eight weeks
  • Sold as commodity
slide-15
SLIDE 15

15

slide-16
SLIDE 16

Emission Controls

16

slide-17
SLIDE 17

Baghouses

  • Used to control

PM emissions from:

– MRF tipping area – MRF sorting area – Paper dryer

17

slide-18
SLIDE 18

Ammonia Scrubbers

18

  • MRF

– Two crossflow scrubbers – Reduce odor

  • ADF

– Crossflow scrubber – Reduce ammonia

slide-19
SLIDE 19

Biofilters

19

  • Used to control VOC, PM,

ammonia and odors from:

– MRF tipping area – MRF sorting area – ADF

  • Size: 80’ L x 80’ W x 8’ H
  • Capacity: 50,000 cubic feet
slide-20
SLIDE 20

Activated Carbon Filters

20

  • Used to reduce H2S

concentration in biogas prior to combustion in the digester gas fired CHP engines

slide-21
SLIDE 21

SCR/Oxidation Catalyst

  • Combined SCR and

Oxidation Catalyst

  • Urea Injection
  • NOx and CO control
  • Equipped on the four

combined heating and power engines

21

slide-22
SLIDE 22

Enclosed Flares

22

  • Digester Gas Flare

– John Zink ZTOF enclosed flare – 15.805 MMBtu/hr heat input rating – Downstream from Venturi scrubber to reduce ammonia concentration

  • Landfill Gas Flare

– John Zink ZTOF enclosed flare – 39.000 MMBtu/hr heat input rating

slide-23
SLIDE 23

Compost Best Management Practices

  • 20% dry woodchip blending
  • Turning every 2 weeks
  • 20 minute irrigation after

turning

  • 50% to 60% moisture content
  • Video of Windrow Turner
  • Emission Factor Assumption

for Digestate Compost

23

slide-24
SLIDE 24

Permit Highlights

24

slide-25
SLIDE 25

BACT/CEMS

  • BACT triggered for NOx, VOC, SOx, PM, PM10 and PM2.5
  • Equipment subject to BACT: ADF, baghouses, CHP

engines, enclosed flares, composting operations, and emergency electrical generators

  • Continuous Emissions Monitoring System (CEMS) and

Data Acquisition System (DAS) for CHP engines

25

slide-26
SLIDE 26

Offset Exemption

  • California Health & Safety Code §42314

– Produces 50 megawatts or less of electricity – Applies BACT – Emissions reductions from shutdown of existing equipment to be provided as emissions offsets – Provide reasonable available offsets from facilities it owns or operates – Made a good faith effort to secured reasonably available offsets

26

slide-27
SLIDE 27

Permitted Emission Limits

  • Annual Potential to Emit for Project (TPY):

27

NOx VOC CO SOx PM PM10 PM2.5 10.81 10.68 23.03 1.79 6.77 6.66 6.66

slide-28
SLIDE 28

Project Challenges

28

slide-29
SLIDE 29

HRA Modeling

29

  • Update model for District permit
  • Toxic emission factors lacking

for digester gas

  • Will require toxic emission

source testing at startup

slide-30
SLIDE 30

Odors

  • Other waste conversion

and composting projects have caused significant

  • dor issues
  • This project has been

designed with odor controls/mitigations

30

slide-31
SLIDE 31

California Coastal Boundary

  • Original project within

coastal zone boundary

  • Forced redesign of facility

and supplemental EIR

  • Resulted in lawsuit and

2 year delay

31

slide-32
SLIDE 32

Summary

32

slide-33
SLIDE 33

Questions?

33