How to treat wastewater containing sodium sulfide and sodium hydrosulfide?
Thread Content
I’d like to ask my friends! How to treat wastewater containing sodium sulfide and sodium hydrosulfide? It contains approximately 6% sodium sulfide, Na2S, and 5% sodium hydrosulfide, NaHS; the pH value of the wastewater is around 13. The target for wastewater treatment is in accordance with the third-level standards of GB8978-1996, which require the sodium sulfide concentration to be reduced to below 1 mg/L.
Reply to 2# sfy111: I’m from Zhejiang.
I specialize in providing the technology and equipment needed to produce sodium hydrosulfide from hydrogen sulfide. I have been producing sodium methanethiol for 10 years now, and the production of this substance requires a large amount of sodium hydrosulfide; therefore, I use all the sodium hydrosulfide that I obtain from recycling hydrogen sulfide for my own production needs. I offer a one-stop service – if you’re interested, feel free to get in touch with me. My phone number is 13290216678. I am currently looking for manufacturers who can produce hydrogen sulfide gas; I’ll provide the technology free of charge, in exchange for an order guarantee for sodium hydrosulfide, as my demand is really high
Hello! What is the name of your company? Where from? ------------------------------------
Hello. How to process it? Is it dried by evaporation with steam? -----------------------
Hello, how much wastewater do you generate? If the quantity is large, add ferrous sulfate; after filtration, it can be sold to us
Hello, how much wastewater do you generate? If the quantity is large, add ferrous sulfate; after filtration, you can sell it to me. This way, your water can be treated to meet the required standards, and treatment costs can also be saved. QQ: 843359719, 15597393801
It’s from Guangdong! I also have wastewater with the same composition as that of the original poster; the volume of this wastewater is only about 400 kg per hour, which translates to approximately 330 tons of pure sodium sulfide per year. The current approach is to use waste alkali for oxidation, converting it into sulfates before proceeding with the treatment of biochemical wastewater.
I’m from Guangdong; if it’s not too far, I’ll deliver the wastewater to you for free!
Hello! What material is used for your waste water pipelines? Carbon steel? Still stainless steel?
It contains approximately 6% sodium sulfide, Na2S, and 5% sodium hydrosulfide, NaHS; the pH value of the wastewater is around 13. What material do you use for your pipelines in such a medium?