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Oct 25, 2011
Environment Impact Reduction

In order to continuously minimize the environmental impact of exhaust and wastewater produced from process operations, CMI invested about NT$220 million in the installation and improvement of air pollution control and wastewater treatment equipment in 2010.

       Installation and Improvement of Air Pollution Control and Water Pollution Prevention Systems


Installation and Improvement of Pollution Prevention Systems
Plant Site
Air Pollution Control
Construction of the regenerative thermal oxidizer (RTO).
Plant A, TNSP Plant Site
Wastewater Treatment Site Sedimentation Basin and Basin Air-sealing Improvement Project
Plant B, TNSP Plant Site
Plant F, TNSP Plant Site
Changed to combustion-type local scrubber to cope up with CVD machines and added the CVD dust collection system.
Plant T1, JNSP Plant Site
Added the rotor concentrator VOC and THC systems
Plant T2, JNSP Plant Site
Water Pollution Prevention
ITO Process Machine Resin Tower Project
Plant B, TNSP Plant Site
Installed the TMAH recycling system
Tree Valley Branch, TNSP Plant Site
Installed the phosphoric acid evaporator system
Tree Valley Branch, TNSP Plant Site
Installed the nitrogen stripping system
Tree Valley Branch, TNSP Plant Site
Purchased the sulfides (total sulfur) analyzer XG-100V
Plant F, TNSP Plant Site
AOAO Anaerobic Technology Implementation Project
Plant T1, JNSP Plant Site
Process Wastewater Recycling Improvement Project
Longhua Plant Site, China
Wastewater Treatment Station Construction Project
Ningbo Plant Site, China
Added new process recycling water systems
Ningbo Plant Site, China
Added steam condensation recycling systems
Ningbo Plant Site, China
Sewage Treatment Station Improvement Project
Nanhai Plant Site, China

       Industry-Academic Cooperation Projects

Project Type
Project Title
Air Pollution Improvement
Stack Emission Air Pollutant Monitoring and Minimization Project
Integrated Stack Exhaust Contents and Odors Investigation Project
Exhaust Spread Simulation Project
Wastewater Treatment
TFT-LCD Process Wastewater Nitrogen Pollutant Treatment Technology Development Project (year 3)
Optoelectronics Industry Wastewater Recycling Project
Organic Sludge to Resources Research Project

Industry-first Evaporator Phosphoric Acid Concentration System

In 2010, CMI implemented the industry-first evaporator phosphoric acid concentration system to effectively minimize environmental impact a step forward.
System advantages:
-Produces less sludge than conventional treatment to effectively minimize waste.
-Ensures the recycling and reuse of concentrated waste phosphoric acid.
-System water can be recycled for process use.
-Reduces total phosphoric concentration in effluent to minimize environmental impact.

Industry-first TMAH Recycling System

Recognizing that using large amounts of tetramethylammonium hydroxide (TMAH) in the process will bring heavy load to the wastewater treatment system and produce a large quantity of organic sludge, CMI began aggressive R&D with suppliers to invent the industry-first TMAH recycling system. With extraction and purification, liquid waste is recycled for reuse. System tests were completed during 2008 and 2009, system construction and application for use were completed in 2010, and official operations will begin in 2011.

Multifaceted Environmental Impact Minimization

Having faith for this land, CMI has spent greater efforts and more investments on planning and implementing environmental impact minimization. As a result, the performance in pollution control is increasing.

Green Operations 7 en                       Green Operations 8 en


Average Waste-to Resource Ratio at 88.5%

The recycling and reuse projects promoted in 2010 included: TMAH liquid waste recycling, waste stripper and waste aluminum etchant recycling efficiency enhancement; waste gypsum and waste calcium silicate board to resources; and clean room wiper reduction.

In 2010, the total quantity of waste was 105,640 tons, and the average waste-to-resource rate was 88.5%. The highest waste-to-resource rate at 94% goes to Plant T3 of JNSP Plant Site. In the future, we will uphold the clean production concept and continue to promote R&D and implementation of waste minimization at the source of process and waste-to resource at the end of process.。

 Green Operations 9 en

Waste-to-Resource Rate of CMI Plants in 2010 and Targets for 2011, Unit: %

Actual Achievement in 2010
Target for 2011

* The target of Longhua Plant Site for 2011 is not set because the production line diversion is in progress.

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