Our company produces an excessive amount of high-concentration soda ash solution; discharging it directly pollutes the environment. How should it be treated?
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Due to process-related reasons, our company generates an excessive amount of high-concentration soda ash filtrate containing a certain level of salt. Discharging it directly is both wasteful and polluting; we’re unsure how to handle it I wonder which units need this solution?
Recycling—it’s done through membrane treatment methods. This approach is both energy-efficient and environmentally friendly; it can save a great deal of money each year
Reply to 2# youzhihua001: What is the specific process flow?
Should we neutralize and drain it? Or can one buy desulfurizer from power plants? ? ?
The process isn’t complicated either; the main issue is that the membranes are expensive. These membranes generally come from abroad. There are a few leading manufacturers: Hydranautics from the US, Samsung (Korea), and some Japanese companies (out of disdain, I won’t mention those crappy **brand names). For specific procedures, I need to consult with companies in the environmental protection industry. I used to work in this field, but haven’t done so for several years now; I have no relevant materials on hand!
Waste alkali falls under category HW35 and must be treated as hazardous waste. It is estimated that your company cannot afford the substantial disposal costs involved. Neutralization treatment is not a viable solution; it would essentially be a waste of resources. Therefore, it would be better to adopt an approach of using waste to treat waste, thereby enabling recycling and reuse. However, since I’m not familiar with your company’s processes, I hesitate to make any assumptions
Get it for desulfurization purposes; waste alkali solution works great for desulfurization
Reply to 7# ougua123: Many enterprises find that using caustic soda yields better results in desulfurization; moreover, the amount required for desulfurization is generally quite small. I wonder which units would neutralize ferric acid, or need such a filtrate?
Reply to 5# youzhihua001: Why did you stop doing environmental protection work? So, what are you doing now?
Is it difficult to extract the salt? If it isn’t difficult to parse, sell soda ash
Mainly, the high salt content affects the product quality; therefore, a portion of it needs to be processed. However, the alkaline solution is a supersaturated solution, with an alkali content of over 30% and sodium salt content at around 3%. The contents of all other components are extremely low! I wonder where it’s needed?