Numerous problems with the sulfidation treatment of high-arsenic copper waste acid
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After sulfidation, the arsenic content is 12,000 mg/cubic meter, while the acid content is 50 mg/cubic meter. Too much sodium sulfide was added; the absorption and detoxification tower results in high emissions, giving off a strong odor throughout the plant. If too little sodium sulfide is used, the arsenic level doesn’t drop, remaining above 100 mg/cubic meter, and moreover the sedimentation rate is slow
The arsenic content remains relatively stable, while the acid content fluctuates. The design calls for treating the arsenic level to above 5,000
Using hydrogen sulfide directly to remove arsenic instead of sodium sulfide eliminates sodium salt contamination and offers high efficiency. WeChat 13508541372
12,000 mg/l of arsenic is not considered high; in the absence of hydrogen sulfide gas emission, it is possible to reduce the arsenic level to around 0.5 mg/l in just one step (multiple sulfidation steps are not required, and substances such as sodium sulfide, sodium hydrosulfide, or hydrogen sulfide can be used). Leave your contact information and I’ll give you a technical package for free. WeChat wr6561236189