Can Fenton oxidation remove ammonia nitrogen?

I’ve never heard of it; you can give it a try. The oxidation of ammonia nitrogen in water treatment is carried out using the chlorine breakpoint method

The Fenton oxidation mechanism primarily involves the combined action of hydroxyl radical oxidation and iron ion coagulation to remove organic matter from wastewater. Fenton reagent has no effect on removing ammonia nitrogen in water. References: \"Experimental Study on Advanced Oxidation Treatment of Landfill Leachate\", by Li Jing, Master’s thesis in Environmental Engineering, Tianjin University. Current treatment methods for ammonia-containing wastewater include the synthetic nitrification method, ion exchange method, air vapor stripping method, liquid membrane method, chlorination or adsorption method, and wet catalytic oxidation method. This post was last edited by Fightinghard on 2009-4-14 16:45]

No. Removing ammonia nitrogen is rather complicated, mainly due to the composition of ammonia nitrogen. Currently, there are only two methods: the first is to send it into the air; if the ammonia nitrogen is derived from ammonia water, then a stripping tower is used for this purpose. The second method is precipitation; there is an ammonium magnesium phosphate method which I have also used, but its effectiveness is low and the costs are high. In this approach, precipitation is used to remove the substance. Another precipitation method involves forming crystals, thereby removing the substance in solid form. Since the formation of ammonia nitrogen mostly occurs in the form of ammonium salts such as ammonium sulfate, if a stripping tower is used, liquid alkali must be added, which increases the costs. The main focus is on the causes of ammonia nitrogen formation in wastewater, with different methods being employed. For reference, if there are any issues, please add me on QQ at 63708745. The information I provide might not be entirely accurate, so please understand; I don’t want to engage in arguments.

Agree with the view from the 4th floor. For high concentrations of ammonia nitrogen, the methods used are either stripping, ammonia evaporation, or blowing off; alternatively, ammonia, magnesium, and phosphate are combined to form a precipitate at a pH of around 10. These methods are not the most reasonable ones; they involve transferring ammonia out of the water rather than removing it completely. For low concentrations of ammonia nitrogen, biochemical methods are generally used, such as the AO process, oxidation ditch, SBR process, etc. All of these methods can remove ammonia nitrogen, and they involve ecological reduction processes, making them the best options. There are also oxidation-based methods, such as breakpoint chlorination. Microelectrolysis generates highly oxidizing hydroxyl groups, which remove some amount of ammonia nitrogen; however, the extent of this removal is not well understood due to insufficient understanding of the relevant conditions or lack of thorough research.

No, the biological method works.

I agree with the view from the sixth floor: halophilic bacteria can remove ammonia nitrogen, while Fenton oxidation merely oxidizes organic substances, which then form precipitates with iron ions thereby reducing the COD of the wastewater:handshake

Fenton’s oxidizing power comes from HO radicals; its oxidizing capacity is second only to that of fluorine, and it is capable of oxidizing ammonia nitrogen!

Does the HO radical oxidize ammonia nitrogen first, or COD first, or do both occur simultaneously? Is there any requirement regarding pH? Pay attention!

Does HO have an oxidizing effect on ammonia nitrogen?

The Fenton method is generally used to treat COD, but it cannot address ammonia nitrogen. There are various methods to remove ammonia nitrogen: 1. Stripping ； 2. Deaeration membrane ； 3. Ion exchange. In all 2 or 3 cases, ammonia nitrogen is converted into ammonium sulfate, or ammonium chloride is converted for further processing; since evaporation and crystallization are possible, the resulting products can be used as industrial salts and thus hold market value.