Potassium Dimethyldithiocarbamate

Sodium dimethyldithiocarbamate (SDDC), also known as sodium N,N-dimethyldithiocarbamate, is a highly effective heavy metal precipitant. Under specific conditions, it can chemically react with various heavy metal ions in wastewater and waste residues, rapidly forming insoluble, low-moisture flocculent precipitates that are easy to filter and remove, thereby achieving the goal of eliminating heavy metal ions. Due to its excellent heavy metal-capturing properties, it is widely used in industries such as waste fly ash treatment and electroplating wastewater treatment. Let’s take a closer look at the SDDC product:

1. Application of SDDC in Waste Fly Ash Treatment

Fly ash is a residue collected from the flue gas purification systems of waste incineration plants and is classified as hazardous waste. It contains five of the most harmful heavy metals to human health: lead, chromium, mercury, arsenic, and cadmium. If directly landfilled, it can cause severe pollution to surrounding soil and groundwater, ultimately affecting the human living environment.

Fly Ash Treatment

After treatment with SDDC at standard concentrations, the heavy metal content in fly ash is significantly reduced below national standards, meeting the landfill criteria for municipal solid waste.

2. Application of SDDC in Wastewater Treatment

Industries such as electroplating and electrolytic manganese production generate large amounts of industrial wastewater containing heavy metal ions. If not treated to meet standards, this wastewater can cause serious environmental pollution.

Industrial wastewater treated with an appropriate amount of SDDC meets the discharge standards for the electroplating industry, effectively reducing environmental pollution.

Advantages of SDDC:

① Cost-effective: SDDC is an affordable wastewater treatment agent with remarkable heavy metal ion-capturing effects.

② Environmentally friendly: SDDC itself is non-toxic and does not produce harmful substances like hydrogen sulfide during use. Its application does not increase the chemical oxygen demand (COD) of wastewater. The chelates formed between SDDC and heavy metal ions are highly stable, minimizing the risk of secondary pollution.

Thus, SDDC is truly an eco-friendly chemical agent.

Production and Supply

The primary raw materials for SDDC production are dimethylamine, carbon disulfide, and liquid caustic soda. As a leading domestic producer of dimethylamine, Hualu-Hengsheng has established stable partnerships with several renowned SDDC manufacturers. The company supplies over 50% of the dimethylamine used in the SDDC industry.

"Integrating green chemistry with nature and rewarding society with high-quality products" is the corporate mission upheld by Hualu-Hengsheng. SDDC, as an outstanding eco-friendly chemical agent, aligns perfectly with the company’s environmental philosophy. Moving forward, Hualu-Hengsheng will continue leveraging its strengths to support the needs and development of this industry, striving for mutual benefits in supply and demand while making greater contributions to environmental protection.