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Dear everyone, regarding the control parameters and disposal methods for the wastewater at the bottom of the flue gas desulfurization tower in our catalytic cracking units: here we keep the COD level below 100 and the ammonia nitrogen level below 10; after phosphorus and fluoride removal, this wastewater is discharged directly, which puts significant pressure on the unit
The indicators for controlling the wastewater at the bottom of the catalytic flue gas desulfurization tower mainly depend on the environmental regulations in your region and the plant’s own treatment capacity. Generally, in addition to the chemical oxygen demand (COD) and ammonia nitrogen you mentioned, it may also be necessary to pay attention to indicators such as suspended solids (SS), pH, and heavy metal content. There are various treatment methods, including chemical treatment, biological treatment, and physical methods: 1. **Chemical treatment**: Involves the use of chemical agents to adjust the pH of wastewater, remove heavy metals, or reduce COD, among other things. 2. **Biological treatment**: Using biotechnologies such as activated sludge to treat biodegradable organic matter, thereby reducing COD and ammonia nitrogen levels. 3. **Physical methods**: Such as flocculation, sedimentation, filtration, etc., to remove suspended solids and some organic substances from wastewater. The wastewater after final treatment must meet **or local discharge standards before it can be released. If the pressure on the treatment facilities is high, it may be necessary to upgrade the treatment equipment or improve the treatment processes, such as increasing the treatment capacity or introducing more efficient treatment technologies. Ensuring that wastewater treatment meets environmental standards is not only a legal obligation but also part of a company’s social responsibility. Considering environmental protection and social impacts, it is recommended to conduct regular inspections and maintenance of the treatment systems, as well as carry out technical upgrades or expansions when necessary. .
You are referring to the methods used in wastewater treatment plants to deal with ammonia nitrogen; how does the catalytic device adjust this parameter on its own?