Wastewater from printing and dyeing factories is treated using cationic polyacrylamide, polyaluminum chloride, and decolorizing agents; what to do if the COD level is high?
Thread Content
Wastewater from printing and dyeing factories is treated using cationic polyacrylamide, polyaluminum chloride, and decolorizing agents; what to do if the COD level is high?
There are some soluble organic substances that cannot be flocculated using PAC and PAM. Conventional COD removal agents generally have limited effectiveness when the dosage of these agents or the characteristics of the incoming water change, and they may even lead to higher COD levels, resulting in unstable effluent quality. In such cases, large-pore resins can be used for adsorption; this method has been successfully applied in dyeing and printing factories in Anhui, with excellent results – the effluent is clear and transparent, and the COD level remains below 70. If you need it, I can send you some relevant materials for reference so we can learn from each other
Hello, could you send me some materials to take a look at? Thank you! Email: 568272914@qq.com
Carbon columns can be used for adsorption. Experiments were conducted at Limin Water Plant: the COD level in the incoming water was 49.5, while it dropped to 2.7 in the treated water. For more information, please contact: 18769636968
Our company is also in the printing and dyeing industry, and we want to handle wastewater treatment. The daily wastewater volume is 2,000 tons, with a COD level of around 2,500 and a colority of 500. Please provide any good solutions; thank you. QQ: 1249176145
I’m interested in water reuse; is it possible? The emission level is required to be below COD80.
In my understanding, for the treatment of this type of wastewater, flocculation methods should be used absolutely; if the water does not meet the standards after the first treatment, it needs to be subjected to flocculation treatment again. Other methods may be effective, but they are more costly
Our company’s technology, which combines oxidation with electrodialysis, can be utilized; feel free to contact me at 15088793370 if needed
I’m not sure what the specific quality of your water is like. Generally, ammonia nitrogen in textile printing and dyeing wastewater is a quite troublesome issue; it’s not just a problem related to COD, and have you tried using anionic PAM?