A kind of waste water treatment device and method

Abstract

The invention relates to the technical field of food additive emulsifier wastewater treatment, in particular to a wastewater treatment device and method. The device comprises: a thin film evaporator, a saponification heating tank, a first molecular distillation device and a second molecular distillation device, the liquid discharge end of the thin film evaporator is connected to the liquid inlet end of the saponification heating tank, and the liquid discharge of the saponification heating tank is connected to the liquid inlet end of the first molecular distillation equipment, the liquid discharge end of the first molecular distillation equipment is connected to the liquid inlet end of the second molecular distillation equipment, and the liquid inlet end of the thin film evaporator is connected to a waste liquid buffer device . The wastewater treatment device conducts advanced treatment of wastewater, which not only alleviates the problem of high COD concentration caused by direct discharge of wastewater, is difficult to treat, and has a large impact on the sewage treatment system, but also the light and heavy components of fatty acids produced from wastewater are reused to realize waste utilization. , Relatively reduce the input cost of raw materials and improve certain benefits.

Description

technical field [0001] The invention relates to the technical field of food additive emulsifier wastewater treatment, in particular to a wastewater treatment device and method. Background technique [0002] Countries around the world have different definitions of food additives. The United Nations Food and Agriculture Organization (FAO) and the World Health Organization (WHO) Joint Food Regulation Committee define food additives as: food additives are consciously added to food in small amounts to improve food. Non-nutritive substances of appearance, flavor and texture or storage properties. [0003] Emulsifier is the most common type of food additive. Emulsifier is a class of compounds that can make a mixed liquid of two or more components that are immiscible with each other form a stable emulsion. The principle of its action is that during the emulsification process, the dispersed phase is dispersed in the continuous phase in the form of droplets (micron scale), and the em...

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Problems solved by technology

[0004] In actual production, many food additive emulsifiers will produce waste water during the production process. The waste water contains a certain amount of organic matter such as glycerin, fatty acid, and oil. The waste water is directly discharged into the sewage treatment system. These organic matter have high COD concentration and are difficult to treat. The sewage treatment system has a large impact, resulting in the enterprise's wastewater discharge not meeting the standard

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