Treatment of concentrated solutions from high-salt wastewater by evaporation
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The evaporation treatment of high-salt wastewater in the chemical industry is becoming increasingly common. What treatment methods are available for the concentrated wastewater produced as a result of evaporation and concentration?
The salts in the concentrated solution are recovered using a salt collector; the concentrated solution is then dried for recovery or incinerated
Concentrated crystallization, salt production, hot water recovery
1. Concentration + incineration. 2. Salt extraction after concentration and crystallization; the specific methods can include 2.1 multiple evaporation steps + crystallization + centrifugation + drying, 2.2 MVR concentration + crystallization + centrifugation + drying. If the concentration is very low, nanofiltration should be added for membrane concentration. 2.3 Membrane concentration + MVR concentration and crystallization + centrifugation + drying. Distilled water can be reused within the process setup; if higher purity is required, an RO unit may need to be added. If the mixture contains organic substances, biological treatment is necessary
1. Concentration + incineration. 2. Salt extraction after concentration and crystallization; the specific methods can include 2.1 multiple evaporation steps + crystallization + centrifugation + drying, 2.2 MVR concentration + crystallization + centrifugation + drying. If the concentration is very low, nanofiltration should be added for membrane concentration. 2.3 Membrane concentration + MVR concentration and crystallization + centrifugation + drying. Distilled water can be reused within the process setup; if higher purity is required, an RO unit may need to be added. If the mixture contains organic substances, biological treatment is necessary
The previous MVR evaporation crystallization unit. This industry is very popular these days; many companies can engage in it, and my company does as well.
Qingdao Ruifanen Environmental Protection Technology Co., Ltd. – The process utilizing particle carbon adsorption and regeneration systems can provide an alternative approach for the treatment of high-salt, high-concentration wastewater. Contact number: 13515323769 Website: www.ruifaen.com
The treatment of the concentrated solution obtained after the evaporation and concentration of saline wastewater depends on certain circumstances: First, if the concentrated solution contains a large amount of organic matter, and the wastewater has high viscosity, making it impossible to crystallize or separate salt through centrifugation, then it can only be incinerated in specialized combustion equipment. For salts with high boiling points, they can be concentrated to a certain degree before being cooled to induce crystallization and the formation of a solid; normal salts can be fed into an evaporation crystallization system where salt is crystallized through normal thermal processes. That’s about the basic situation
Our company specializes in dealing with high-salinity wastewater. Hangzhou Water Treatment Research Center, WeChat: 928866853