Product Introduction：

A carbon source refers to any substance capable of supplying carbon. In wastewater biological treatment systems, carbon sources primarily serve as an energy source; through catabolic (heterotrophic) metabolism, they generate energy used for cellular anabolic processes and maintenance metabolism.

When the influent contains high levels of total nitrogen but lacks readily available organic carbon, denitrification performance is impaired. In such cases, supplemental carbon sources are required to support efficient denitrification and ensure stable system operation.

Common carbon sources include single-component carbon sources and composite (or blended) carbon sources. Single-component carbon sources include methanol, sodium acetate, glucose, and others. Composite carbon sources refer to mixtures containing two or more effective carbon components. These typically consist of small-molecule organic acids (such as acetic acid, propionic acid, etc.), sugars (such as glucose, fructose, sucrose, etc.), and short-chain alcohols (such as ethanol, propanol, etc.).

Some composite carbon source products appear as dark brown or black viscous liquids with a pleasant aromatic odor. They contain various sugar compounds, exhibit strong intermolecular interactions, and consequently possess relatively high viscosity and deep coloration.

Product Advantages：

Different types of carbon sources each have their own distinct advantages：

Methanol: low operating cost, low sludge production, and fast denitrification rate.

Sodium acetate: readily biodegradable by microorganisms, provides excellent nitrogen removal performance, and offers rapid response in emergency situations.

Glucose: widely available, nutritionally comprehensive, and conducive to promoting microbial growth and reproduction.

Composite carbon sources, compared to single-component carbon sources, provide a variety of carbon compounds that meet the diverse nutritional requirements of different microorganisms, thereby enhancing microbial growth rates and metabolic activity and improving wastewater treatment efficiency. They exhibit strong adaptability to fluctuations in water quality and environmental conditions, maintaining effective performance across a range of temperatures, pH levels, and other operational parameters. When used appropriately, composite carbon sources can reduce the production of organic sludge, thereby lowering the cost and complexity of subsequent sludge handling. Additionally, they are generally safer—typically non-corrosive and non-hazardous—making them easier to store and transport. Overall, composite carbon sources offer better cost-effectiveness compared to traditional carbon sources such as methanol, ethanol, starch, glucose, acetic acid, and sodium acetate.

Service Industries：

Wastewater treatment: Composite carbon sources are widely used in the biological treatment of wastewater from municipal, slaughterhouse, food processing, metal surface treatment, electroplating, and other industries. They enhance the biodegradability of wastewater, promote rapid proliferation of denitrifying and heterotrophic denitrifying bacteria, and thereby improve the denitrification capacity and overall nitrogen removal efficiency of wastewater treatment systems.

Biotechnology: It can serve as a food source for microbial growth and reproduction.

Chemical production: It is a fundamental raw material for the synthesis of organic compounds.