How should half of the soda ash distillation waste liquid and white mud from the ammonia-alkali process be treated?
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With increasingly strict environmental regulations, how much waste liquid and waste residue are generated by the ammonia-alkali process per ton of alkali produced? How to handle it/
Reply 1# dingshx: The waste liquid generated in soda ash production is approximately 10 m3 per ton of soda ash (9 m3 of distilled waste liquid and 1 m3 of waste sludge), while the amount of waste residue is about 80–100 Kg per ton of soda ash
Currently, the waste liquid is mainly used to produce calcium chloride and recycled salt; the waste residue is essentially useless and is primarily used for filling pits or leveling land, or for producing building materials
Salt sludge can be used to produce CaCO3 and magnesium hydroxide
Reply to 4# machun*ao: Some alkali plants mix waste liquids and residues and inject them into mines for brine extraction; Austria has this technology. However, it is 20 million euros more expensive; Jiangsu Jingshen and Dalian Dahuahua Design Institute are working on it.
There is virtually no waste residue, and Haihua has large areas for storing white clay. Even if the soda ash plant doesn’t go bankrupt, it will be blocked by trash. As for using it as building material, it’s completely unusable; it can’t even be used for road construction. It’s terrible. No wonder there are so many shoddy projects these days.
Has the moderator feature been actually used?