Seek Fenton water treatment technology
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Can organic wastewater meet the required standards after inorganic salts are removed by evaporation, using the Fenton process without devices such as A/O?
All organic wastewater is directly reused in the circulating water system and not discharged. Isn’t it good?
As a supplementary note, the COD is around 3000–5000 mg/L, while the ammonia nitrogen level is 100–200 mg/L. The organic substances include toluene, methanol, methyl salicylate, and others.
I don’t dare to speak anymore; I merely offered a method and suggestions for treating wastewater – which rule of the forum does that violate?
It depends on the requirements you have. Depending on the components present in the water, you can try using resin adsorption to remove substances such as toluene and methyl salicylate, thereby reducing the COD level; in this case, the cost of Fenton’s process will also be lower. It depends on how much water you use per day
What is the daily water volume? What other emission standards need to be met? For this water quality, installing a biochemical treatment unit is the most cost-effective solution. However, if conditions do not permit it or for other reasons biochemical treatment cannot be used, then other physical, chemical methods will inevitably result in higher initial investment and operating costs. You can give it a try if you don’t consider these investments.
Personally, I think it doesn’t meet the standards; it seems that Fenton is used for advanced treatment, resulting in levels around 100-200, while the treatment with this method yields levels of 30-50. However, my former employer used it for preliminary treatment; for a COD level of 15,000, only about 60% could be removed on-site
The water volume is 80–100 tons per day; the wastewater from the plant has a COD level of 300 and an ammonia nitrogen level of 150. **It is difficult to meet the secondary discharge standards, so the water is intended to be treated again before being reused.
Considering what you mentioned earlier, there should be no major issues in achieving the required standards. Does this water already have a treatment system? Should it be upgraded based on the existing system, or should a new processing system be built to meet the standards? What standards need to be met for the reuse after processing, as you mentioned? If it’s convenient, you can leave your contact information for a more detailed discussion.
Theoretically feasible... Fenton has extremely strong oxidizing power. Considering the overall costs, since it is organic wastewater with high biodegradability, using a microbial system should be more cost-effective. For purely physicochemical methods, it is recommended to combine membrane treatment with Fenton oxidation and ozone oxidation.
It is recommended to use micro-electrolysis + flocculation sedimentation + air flotation + microorganisms (anaerobic + aerobic) for treatment