Composite Carbon Source (Composite Microbial Carbon Supplement)

Performance and Uses: This product is a small-molecule carbon source supplement that is efficient, rapid, low-consumption, and non-toxic. The primary function of the carbon source supplement is to remove total nitrogen, combining the advantages of several external carbon source agents. It features stable chemical properties, fast denitrification rate, low sludge production, rapid adaptation of sludge microbial strains, and effective nitrogen removal. The treatment cost is lower than that of other conventional carbon source agents, making it suitable for emergency dosing in wastewater treatment plants. It meets water quality discharge requirements while achieving economic benefits, serving as a stable, low-cost carbon source supplement.

　　Biological nitrogen removal requires the completion of two processes: nitrification and denitrification. Ammonia nitrogen in wastewater must first be nitrified or converted into nitrite and nitrate. Then, during denitrification, nitrate is reduced to nitrogen gas as an electron acceptor in the cellular respiration process of oxidizing simple carbon compounds. Therefore, denitrification aimed at removing nitrate must have readily biodegradable carbon sources present. These sources include dissolved BOD in the influent, cellular decay products from endogenous denitrification, and various supernatant returns. When the influent dissolved organic matter is insufficient and nitrogen removal requirements are high, it is necessary to supplement chemicals to provide the carbon source required for denitrification. This composite carbon source agent is an amber liquid with a pH (1% aqueous solution) of 5.0–7.0. It is suitable for municipal wastewater and industrial wastewater, supplementing the carbon source in wastewater and adjusting the nutritional ratio required for microbial denitrification.

Usage and Dosage: Municipal wastewater: 0.1–0.25 kg liquid/ton of water; Industrial wastewater: ≥0.15 kg/ton of water.

The selection of the dosing point for this product is related to the properties of the agent, hydraulic conditions, and the degree of water pollution:

　　1. The dosing point is generally chosen in the anoxic zone for optimal effectiveness, reduced chemical consumption, and minimal impact on water quality;

　　2. Hydraulic conditions: The mixing hydraulic intensity should be high, and the time should be short to ensure thorough mixing of the agent with water;

　　3. When water pollution is severe and difficult to treat, since this agent is neutral and highly resistant to fluctuations in water quality, it does not affect the effluent quality. The dosage can be continuously increased to ensure that the effluent meets discharge standards.

Packaging and Storage: This product is packaged in plastic barrels, available in 25 kg, ton barrels, or as per customer requirements. It should be stored at room temperature with a shelf life of 12 months. This product is non-toxic but should avoid contact with skin and eyes. In case of contact, rinse thoroughly with plenty of water.