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Our Work

The following are our projects in urban mining, remediation and restoration, wastewater treatment, hazardous waste treatment, and environmental consulting. 

Urban Mining

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Treatment and Utilization of Incineration Bottom Ash for Wheel Stopper Making
Singapore, 2025

WCI treated IBA was used to cast concrete wheel stoppers for CT Foodnex Mandai. 

Remediation & Restoration

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Treatment and Utilization of Excavated Soil
Singapore, 2021-2025

Site investigation and remediation of historical waste dumping ground by SIL technology.

Environmental Consulting

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Sampling & Characterization of Incineration Bottom Ash & Fly Ash from Incineration Plant
Singapore, 2021-present

Performance validation of new incineration plants.

Urban Mining

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Transforming Soft Clay into Building & Construction Materials 
BCA & MND, Singapore, 2021-2023

Converting soft clay into building & construction materials with non-thermal SIL technology.

Urban Mining

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Sustainable Freshwater Sludge Treatment and Resource Recovery
PUB & Industrial Waste Generators, 
Singapore, 2021-2023

Extracting resources from freshwater sludge and converting it into construction aggregates.

Urban Mining

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Upcycling Non-incinerable Wastes into High-value Artificial Aggregates
ESG & Industrial Waste Generators,
Singapore, 2021-2023

 

Upcycling with MIL technology to reduce the landfilling of non-incinerable wastes, e.g., ash, sludge, catalysts.

Urban Mining

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Transforming Incineration Bottom Ash into NEWSand for Singapore
NEA, Singapore, 2019-2020

Transforming incineration bottom ash into NEWSand for road and concrete applications with ZA's WCI technology.

Wastewater Treatment 

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Semiconductor Ammonia Nitrogen Wastewater Treatment
Taiwan, 2020

Supply of ZA-TECH reagent for treatment of ammonia nitrogen in semiconductor wastewater.

Environmental Consulting

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Treatment of Pharmaceutical Wastewater
Singapore, 2019

Removing contaminants and recovering valuable metals from pharmaceutical wastewater.

Wastewater Treatment 

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Semiconductor COD Wastewater Treatment
Taiwan, 2019

Supply of ZA-TECH reagent for treatment of COD in semiconductor wastewater.

Environmental Consulting

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Utilization of Coal Fly Ash in Non-structural Concrete
Singapore, 2018-2019

Formulation design for using coal fly ash in non-structural concrete.

Wastewater Treatment 

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Semiconductor Fluoride Wastewater Treatment
Malaysia, 2018

Wastewater Treatment 

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Landfill Leachate Treatment 
Wuhan, China, 2018

Treatment of COD, suspended solids, and color of landfill leachate.

Urban Mining

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Treatment of Wastes Containing Heavy Metals
ESG, Singapore, 2017-2021

Treatment of steel slag, incineration bottom ash, and fly ash with ZA's processes and reagents.

Urban Mining

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Food Waste Treatment for Food Processing Hub
JTC, Singapore, 2017-2018

Converting food waste into soil conditioner with aerobic digestion.

Remediation & Restoration

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Mining Slag & Contaminated Soil Remediation
Ganzhou, China, 2017-2018 

 

Soil remediation with in-situ and ex-situ SIL technologies and ZA-TECH reagents.

Wastewater Treatment 

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PCB Wastewater Treatment 
Shanghai, China, 2017 

Supply of ZA-TECH reagents for PCB wastewater treatment to remove Cu and Ni.

Wastewater Treatment 

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Ni Plating Wastewater Treatment
Suzhou, China, 2017-2019

Process design and reagent supply for highly complexed Ni plating wastewater treatment.

Wastewater Treatment 

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iPad Factory Wastewater Treatment
Foxconn, Chengdu, China, 2017-present

Wastewater Treatment 

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Metal Cutting Fluid Wastewater Treatment
Shanghai, China, 2017-present

Supply of ZA-TECH reagents to treat COD and color in metal cutting fluid.

Hazardous Waste Treatment

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Treatment of Incineration Fly Ash
 NEA, Singapore, 2016-2017

Treatment of Singapore's incineration fly ash with ZA's CIP technology.

Environmental Consulting

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Characterization and Leaching Study of Incineration Bottom Ash
Singapore, 2016

Leaching study of incineration bottom ash and other solid wastes for risk assessment.

Wastewater Treatment 

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Mining Wastewater Treatment
Fujian, China, 2016

Heavy metal mining wastewater treatment with ZA-TECH reagents.

Hazardous Waste Treatment

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Off-site Incineration Fly Ash Treatment
Fujian, China, 2016-2017

Incineration fly ash treatment with ZA's CIP technology.

Urban Mining 

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Treatment of Wastes Containing Heavy Metals
ESG, Singapore, 2015-2021

Proof-of-concept for treating heavy metals in waste using ZA-TECH reagents.

Wastewater Treatment 

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Ni Electronics Wastewater Treatment
Jiangsu, China, 2016

Treatment of electronics wastewater with complexed Ni and COD.

Remediation & Restoration

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Petrochemical Contaminated Soil Remediation 
Tianjin, China, 2014

Treatment of petrochemical contaminated land with thermal and CIP chemical immobilization technology.

Hazardous Waste Treatment

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Incineration Fly Ash Treatment
CECEP, Chengdu, China, 2014-2021

Incineration fly ash treatment by ZA-TECH reagent for safe landfilling.

Remediation & Restoration

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Treating and Transforming Marine Clay into Reclamation Fill 
Shenzhen, China, 2014-2015

Treating heavy metals in marine clay and transforming it into land reclamation fill by SIL technology.

Wastewater Treatment 

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Electronics Wastewater Treatment 
Tianjin, China, 2014 

Treatment of Cu and COD in electronic wastewater.

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