An Innovative Solution for Circular Economy∣The Recycling of Developer

San Fu Chemical has established since 1952. Over more than a decade, we have striven to develop specialty chemicals in response to the emerging electronic industry and its new demand. At the same time, we have been dedicated to treating chemical wastes for our clients in a circular economy way. Apart from selling chemicals, San Fu also provides chemical wastewater recycling services.

( English provided by company. )

Tetramethylammonium Hydroxide (TMAH) is widely used in the lithography process in electronic industry. As one of the main sources of ammonia-nitrogen (NH3-N) in wastewater, TMAH-containing wastewater is harmful to human and will result in significant damage to the environment without being disposed properly. To deal with the issue, San Fu Chemical developed a technology to recycle TMAH wastewater, which could be made into TMAH and sulfuric acid after further purification and electrodialysis process.

Going ECO

San Fu’s technology offers a solution to treat and recycle TMAH wastewater. Our customers are located at almost all of the major science parks in Taiwan. We would install a resin absorption system on site; through removing TMAH and reducing ammonia-nitrogen left in wastewater, we make sure the effluent water quality is in compliance with the standards set by the authorities. Together, San Fu Chemical and our customers work towards a more eco-friendly future.

Triple-Win Situation: Toward Sustainable Development

From our customers’ perspective, not only does San Fu’s recycling technology reduce the cost of wastewater treatment, but also allows them to buy recycled TMAH with price lower than fresh TMAH. For San FU, by providing customized services based on customers’ demands, our relationships with clients became closer and more long-lasting. From an environmental perspective, the new technology enables TMAH to be recycled effectively, which cuts down pollution rate and helps electronic industry to be more environmental friendly.


  • Until now, the recycled TMAH has exceeded 30,000 MT. The amount of carbon reduced is equivalent to more than 35 times of annual carbon absorption of Taipei Daan Forest Park. Moreover, the water saved from the recycling of TMAH-containing wastewater is equivalent to the water demand of 260 standard swimming pools annually.

Develop Diversified Recycle Model to Improve Resource Efficiency