High-salt wastewater treatment
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The wastewater from a certain company contains 4% calcium chloride, a pH of 10, a COD level of 2000 mg/L, as well as other organic substances that are difficult to decompose. Are there any other good methods besides adding flocculants and then using the activated sludge and biofilm methods? Daily processing capacity: 1,000 tons per day
Is there a mistake? Can calcium chloride of PH10 not form a calcium hydroxide precipitate? If precipitation does not occur, add some alkali to induce precipitation; this can also have a flocculating effect that reduces COD.
It can be filtered, the pH value can be adjusted, followed by catalytic oxidation, and then treated using biochemical methods
It contains 4% calcium chloride – can it be treated using biochemical methods? Direct biochemistry or biochemistry after dilution? Or salt-tolerant bacteria biochemistry? I want that company’s technology too?
It needs to be diluted and then regenerated; a too high chloride ion content has an inhibitory effect. It seems that the concentration needs to be reduced to around 1.7%, along with lowering the overall pH value. But the large amount of water needed for dilution and similar things also incur certain costs
A multi-effect evaporator might be more effective! However, the processing fee is relatively high!
40,000 units. How much medicine do you need to add? . As long as there are no sulfate ions in the water, concentration can continue. But it can only be concentrated by a little over 3 times. The recovery rate is around 65-70, still without taking other ions into account.
This post was last edited by yuchenchf on 2015-4-15 at 15:09. Specializing in the production of water treatment chemicals such as polyaluminum chloride
Adjust the pH value, treat it using our equipment’s UV wet oxidation technology, and then carry out biochemical treatment
Our wastewater contains a large amount of sodium sulfate, making it difficult to treat
Has your wastewater been treated yet?