How to treat Yellow River water
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We plan to use the Yellow River water as raw water to produce softened water and desalinated water. However, the special water quality of the Yellow River water is very troublesome to deal with. Please ask the bosses of this edition how to deal with the Yellow River water in the most economical way.
You said it is softening and desalination, how to deal with it is just a matter of choice, RO or exchange bed.
You can first flocculate, settle, and filter the raw water, which is basically the same as towns water to create demin water.
The suspended solids in the Yellow River water are very high, and the salt content is not particularly high. You can use coagulation sedimentation filtration for pretreatment and then use multi-media filter + disc filtration + UF + RO + mixed bed, which can meet the needs of boilers with high pressure and above. For detailed consultation, you can join the QQ group: 25768663
1. You need to determine where to set up the water intake, and then get the water quality analysis report of this place in each season. The water quality analysis report should include at least the following items:: 1. Turbidity TSS 2. Cation concentration Ca Mg Na K NH4 Fe, etc. 3. Anion concentration HCO3 Cl SO4 HSiO3, etc. 4 COD, BOD 5 pH value 2. According to your water quality analysis report, it is absolutely necessary to choose the appropriate process for raw water pretreatment and purification. The desalination process includes: Ion exchange and reverse osmosis If ion exchange is used, and the Yellow River water has high salt content and high hardness, it is recommended to precipitate and soften first and then ion exchange. Which one is more economical? According to experience, when the salt content of the raw water is >500mg/l, it is more economical to use reverse osmosis for desalination operation. Because of the high ion content, the use of ion exchange for acid and alkali consumption is large. But the investment in reverse osmosis is higher than reverse osmosis. Ion exchange takes up more space than reverse osmosis.
The coagulation sedimentation + UF + RO membrane process is a good choice, and many cases have been implemented.
Our factory uses the Yellow River water as the water source, and our factory’s technology: Coagulation and clarification + UF + RO + post-treatment, running very well
LZ First of all, you need to determine which section of the Yellow River it is taken from. Since the Yellow River basin is long, the pollution conditions in each section are different, so the processes used are also different. Everyone thinks it is better to use coagulation and sedimentation for the previous pretreatment, and I also agree. I personally think it is better to use RO membrane for the later stage, but the one-time investment is higher.
Hello, we have a sand washing field here. During the production process, a large amount of thick mud is produced, which is many times thicker than the Yellow River water. Because there is no place to store it, it pollutes the environment. If you want to filter out the mud, it is best to seal it in a semi-dry state. Can you introduce the following coagulation sedimentation + UF + RO membrane method and the required production raw materials?
The method on the 4th floor is very good, but the water supply flow rate must also be considered. If the flow rate is large and there is not much space, then light sedimentation will be a problem. The water quality of the Yellow River water is very bad. We have done many projects along the Yellow River. The process is basically the same. The key also depends on the investment cost.