Is UV catalytic oxidation applicable in the pretreatment of coal chemical industry wastewater?
Thread Content
As is well known, UV oxidation can be used in wastewater treatment to reduce COD levels and improve biodegradability. However, after years of testing, it has been found that many UV systems do not perform well in wastewater treatment, or even fail to be effective at all. As a result, many people now believe that UV oxidation is suitable for advanced treatment at the end of the treatment process, but not for the pretreatment of wastewater with high concentrations and difficult-to-degrade substances. But I would like to introduce our ultraviolet oxidation technology here, in order to change people’s perception (that ultraviolet oxidation technology is used only for the pretreatment of high-concentration wastewater): 1. High-power ultraviolet light is utilized to greatly increase the intensity of light energy, thereby improving the treatment efficiency ； 2. The reactor is modular in design and uses high-strength glass; it is structured as a sleeve-type system, allowing wastewater to come into full contact with light and oxidants within the sleeves. This improves the efficiency of the oxidants and addresses the issue of ultraviolet light not penetrating deep within dark-colored wastewater ； 3. A unique control system that adjusts the impact of voltage fluctuations on ultraviolet light; at the same power level, the light intensity is 9 times that of ordinary ultraviolet lamps ； Based on the above points, our ultraviolet catalytic oxidation technology can be effectively applied to the pretreatment of high-concentration wastewater. It has been thoroughly validated in wastewater from industries such as fine chemicals, petrochemicals, pharmaceuticals, and agrochemicals. Its advantages include: 1. Stable and safe operation (at normal temperature and pressure); 2. High COD removal efficiency, comparable to high-temperature wet oxidation, which significantly improves the biodegradability of wastewater; 3. No sludge generation; 4. High degree of automation; 5. Small footprint. It is highly effective in removing both recalcitrant organic substances and organic nitrogen. Some common pollutants that can be removed include DMF, furans, dichloromethane/ethyl chloride, toluene, chlorobenzene, ***, pyridine, pyridine derivatives, epichlorohydrin, hydrazine hydrate, organic cyanides, cyanide ions, DMSO, phenol, propylene, formaldehyde, etc. I think the coal chemical industry also has some wastewater containing phenols, even quinones, as well as other substances that are difficult to degrade. I wonder if ultraviolet photocatalysis can be applied to these specific types of wastewater; I hope everyone can share more insights on this topic!
It seems that some coal chemical projects have adopted ultraviolet catalytic oxidation technology to treat wastewater.
A feasible approach is to bring along the pilot-scale UV catalytic oxidation device, work together with design institutes, and collaborate with coal chemical plants to conduct tests on-site; if the results are satisfactory, it can be applied in new projects in conjunction with the design institutes.
That’s a good idea. Are there any conferences or exhibitions related to the treatment of coal chemical industry wastewater in this field? We don’t have any connections in the coal chemical industry; if there are such exhibitions, it might be possible to find partnership opportunities.
There are many exhibitions in the coal chemical industry, and announcements are often posted on forums; it’s worth keeping an eye on them. Furthermore, introduce and promote your technology to large engineering companies (design institutes) that have coal chemical industry operations, as well as group companies with such operations (such as Guoneng, China National Coal Group, Datang, and Sinopec Great Wall Energy Chemical), because even the best product won’t be known if it’s not promoted properly.