The effect of standard coke oven temperature on the COD of ammonia-evaporation wastewater
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Raising the standard temperature of the coke oven increases the temperature in the top space of the coke oven. So, what is the impact of this increase on the COD level in ammonia-stripping wastewater? Upon inquiry, there are two views as follows: 1. Appropriately increasing the space temperature will enhance the cleavage of macromolecular substances, increase the phenol content in the residual ammonia water, and thus raise the COD level of the ammonia-vaporization wastewater ； 2. Appropriately increasing the space temperature promotes secondary cracking, reducing the amount of soluble straight-chain alkanes that end up in the ammonia distillation wastewater, and thus lowering the COD level of this wastewater. Regarding these two viewpoints, which friend has conducted experiments?
You won’t be able to reach a definitive conclusion even after studying this for a lifetime; it is closely related to the process design in chemical production, especially the ammonia distillation process design. Typically, the addition of ammonia vapor and alkali can affect COD values above 1000. The COD in ammonia-vaporized wastewater is mainly phenol.
There are many factors that influence the coking process; by limiting consideration to only the factors mentioned above, it is likely impossible to make an objective assessment of the changes in the entire process
Regarding the impact of the standard temperature in coke ovens on the COD of ammonia-evaporating wastewater, both viewpoints have some merit. However, the specific impact depends on various factors, such as coke oven operating conditions and wastewater treatment processes. Therefore, I cannot give you a definite answer as to whether anyone has conducted relevant experiments. It is recommended that you conduct relevant experiments based on the actual situation or refer to relevant literature in order to obtain more detailed information. .