Wastewater Reclaim & Chemical Waste Reduction in ASE-KHsemicontaiwan.org/en/sites/semicontaiwan.org/files/data16... · 2018-06-11 · Wastewater Reclaim & Chemical Waste Reduction

ASE Confidential / Security-C

Wastewater Reclaim& Chemical Waste Reduction in ASE-KH

JeffreyYJ Tsai

Director,

UTI Div. ASE Group

ASE Confidential / Security-C ASE Confidential / Security-C

Contents

1. Waste Management in ASE Group

2. Wastewater Reclaim & Applications

3. Chemical Waste Reduction & Reuse

4. Further Actions of Waste Reduction & Recycling

5. Q&A


Waste Management in ASE Group


Waste Management Hierarchy in ASE

1. AVOID unnecessary resource consumption;

3. REDUCE waste generation and disposal.

RECOVER

DISPOSE

REPLACE

AVOID

2. REPLACE: Ex. Boric Acid replace to Non-Boron.

4. RE-USE waste resources without further manufacturing.

5. RECYCLE waste resources to make as products.

6. RECOVER waste resources, including energy.

TREAT 7. TREAT waste before disposal, including reducing thehazardous nature of waste.

8. DISPOSE of waste only if there is no viable alternative.


Waste Categories at ASE-KH site

Solid Wastes

EPA RulesTTL Emissions

VOCsScrubbers, BAC,

Condensors & RTO, <0.6 kg/hr

AEX. Scrubbers, <0.6 kg/hr

GEX. Heat Recovery N/A

Categ. Treatment

Categ. EPA code Treatment

General waste D0104 Dispose / Reduce

Epoxy resins D-0299 Dispose / Recycle

WWT Sludge A8801 Reduce / Fill

Waste ChemicalsWaste Water

Treatment Categ. EPA code Treatment

H.C. Waste Solvent C-0301 Reduce / MVP/ Outsourcing

Waste IPA/Acetone C-0301 MVP/ Recycle

Waste Cu-Liquid C-0110 Oxi. Reduction / Outsourcing

Waste Ni-Liquid C0299 Ion Absorb/ Outsourcing

Alk. A70/A76 C0201/C0202 Reduce / Outsourcing

Categ. EPA code Treatment

L. C. Organic W.W C-0301 Aerobic Reaction /BAC/MBR

H. C. Organic W.W C-0301 Anaerobic / Outsourcing

Inorganic W. W C-0110/C-0299 pH/Coagulation/Sedimentation

Air Pollutants


2. Wastewater reclaim & applications

Processed water Reclaim (By each Plant)

Central Reclaim Plant (K14B) For each plant’s WWT effluent

Utilities Water Saving

64% 86 %Process Reclaimed Rate:

TTL Water Reclaim Rate: 38% 62%


Processed water reclaim at each plant

Year of Built(YY/MM)

Category of Water Major Reclaim DevicesReclaim

Volume

(CMD)

Reclaim

Rate (%)

K3 June 1997 Process clean waterFilter+UF+Strip

Plating+RO843 81%

K5 Apr. 2014 Process clean water Filter +UF+RO 1,000 94%

K7 Dec. 2011 Die saw/Grinding W. Filter +UF 2,100 90%

K9 Aug. 2010 Process clean water 5μm Bag filter 80 98%

K11 Apr. 2014

DS/SS/Grinding/Vac

uu Pump/CDA

Cooling W.

Auto Filter+UF+RO 1,100 92%

K12 Sep. 2014 DS/Grinding Filter +UF+RO 200~400 91%

K15 Mar. 2015 Process clean water 5μm & Bag-Filter 280 98%

K21 Dec. 2014 Process clean water Filter +UF+RO 350 91%

K21 Mar. 2015 Process clean waterAerobic

+MBR+RO280 85%

K22 Feb. 2016 Process clean water

pH+Colagulation+S

edim+pH

+BAC+MBR+TOC-

UV+Filter+RO

330 87%

TTL / AVG. 6,363 91%

Plant

Processed Water Reclaim at each Plant


K14BCentral Water

Reclaim Plant

Central WWT effluent water reclaim in ASK-KH (Underground supply & return pipes b/w each plant and K14B)

Stage MFG PlantDischarge

(CMD)

K14B

Recovery

Rate (%)

TTL Reclaimed

Water (CMD)Remark

1 K5 / K7 / K11 11,000 6,050 Upto date

2 K12 / K9 2,800 1,540 By Q4 2016

3 K21 / K22 4,600 2,530 By Q2 2017

18,400 10,120

55%

Sum

ASE-KH Site

Zone-2

Zone-1

1. Existing Phase-1 of Central Water Reclaim Project at K14B

2. Future Phase-2 Plan to reclaim 20,000 CMD (for K24 thereafter )


RO conc.Sludge

K24

MixingpHAdj.

BAC Sedi. MMFUF

TankRO

Back. WTank

UF Rej.W. Tank

Effluent Tank

ROTank

ROR

Reclaimed Water Specifications:COD:<8ppm, TOC< 300 ppb, SS<1 ppm, Turb.<0.2 NTU, pH:5.5~8.0、E.C<200μs/cm、T. Hard.<10 ppm

WWT Discharge Specifications:pH: 6~9, COD<100ppm,

SS<30ppm, Cu<1.8ppm,

Ni<0.6ppm

Schematic of WWT Water Reclaim in ASE-KH

K5 K7 K11 K12 K9 K22K21 K25 K26

WWT Discharge Specifications:COD<100ppm, SS<30ppm, pH: 6~9、Cu<1.2ppm, Ni<0.4ppm, E.C<2500μs/cm

Discharge

Existing Phase-1 (Max. Cap. 20,000 CMD) Phase-2 (20,000 CMD)

pHAdj.

UF

K14B W.W

Reclaim Plant


ASE-KH TTL Reclaimed Water Performance

(CMD)

Started Central Reclaim (K14B) in Apr. 2015

20,252 20,901

14,654 15,558

17,498

15,429

5,668 6,698

53.056.4

86.6 85.4

38.5

53.2

62.3 60.5

0

10

20

30

40

50

60

70

80

90

100

0

5,000

10,000

15,000

20,000

25,000

30,000

2014 2015/01-03 2015/04-12 2016/01-06

Re

cla

ime

d r

ate

(%)

ASEK tap water demend ASEK TTL reclaimed water

ASEK TTL discharged water Process reclaimed rate

TTL reclaimed rate


Sludge reduction

3. Wastes Reduction/Recycle & Reuse

- WWT Sludge Minimization

- Recycle of Low B.P Solvent Wastes (IPA and Acetone)

- Reduce of High Conc. Solvent Wastes (TMAH, DMSO etc.,)

- Recycle of High Conc. Ni & Cu wastewater


- General Industrial wastes

- Hazardous Industrial Wastes

- Low B.P Wastes: Distillation6

- H.C. Solvent Wastes: PSD

- Heavy Metal: Adsorption

- Inorganic: WWT Coagulation

- H. COD: Aerobic / Anaerobic

ASE Wastes Categories & Recycle/Reusing Approaches

Solid Waste

Waste Water

Chemical

Waste

ASE Assembly

/ Test / Materials

Plants

Reduce Reuse Recycle

√ √

√ √ √

√

Central Reclaim

√ √ √

√

√

√

√

√Note:

: Under execution at ASE

: Opp. for Improvement


Centralized Wet Sludge Drying System

K5

K12

2.1 T/D

2.4 T/D

3.5 T/D

1.0 T/D

2.5 T/D

K7

K8K11

K14B

TTL Drying Capacity = 12 Ton/Day 50% Sludge Reduction

Heat Pump Applications for WWT Sludge Minimization

O/A

Discharge system

Fan

Gear Reduc

er Motor

Flat Net Conveyor

Dry & Hot Air (60-75oC)

Humid Air (50-60oC)

Flat Net Conveyor

COD< 80 ppm,

To BAC treatment

(Water Content: 80%)

Dried Sludge:

6T/day 2.5kg of H2O/kwh

Capacity: 12 T/day

Condensate

Heat pump

Blower

H.Xcondenser

Heatrecovery

(Water Content:

40%)

Truck out

Benefits:1. Cost effective of sludge volume minimization.2. 2. Reduced 50% of sludge disposal fee


To heat IPA, Acetone solvent to its boiling point, vaporize and separate from its

contaminants. The vapor is then passed through a water condenser where it

condenses into a clean, reusable solvent.

Low B.P Solvent Wastes Recycling

Acetone Recycling Device

IPA Recycling Device


More Advance Recycling Solutions are required.

1. To Reduce/Recycle Organic Chemical Waste (TMAH, DMSO tec.,)

2. To Reduce/Recycle High Conc. COD Waste Water.

Distributor

Effluent

Biogas

Influent

Gas/Liquid/solid

Separator

Rec

ycle

BiofilmCarrier

Ex. Anaerobic Fluidized Bed Ex. Pressure Swing Distillation


Concluding Remark

1. More Challenge at recycling the Waste to become Resource.

2. CWTC (Chemical Waste Treatment Center) could be suitable solution at ASE and even in Taiwan.


Documents

Wastewater Reclaim & Chemical Waste Reduction in ASE-KHsemicontaiwan.org/en/sites/semicontaiwan.org/files/data16... · 2018-06-11 · Wastewater Reclaim & Chemical Waste Reduction