Wastewater treating device and method

Abstract

The invention discloses a wastewater treating device. The wastewater treating device comprises an adjusting pool, a pipeline mixer, a primary filtering system, a secondary filtering system, a primary reverse osmosing system, a secondary reverse osmosing system and an evaporating and crystallizing system. The invention further discloses a wastewater treating method. By the cooperation treatment of the primary filtering system, the secondary filtering system, the primary reverse osmosing system and the secondary reverse osmosing system, a penetrating fluid accounting for about 88% of the volume of wastewater can be recycled to be used as recycled water, and evaporation and crystallization can be further conducted on the rest few penetrating fluid, so that zero emission treatment of wastewater, particularly wastewater high in salt content, can be realized.

Description

technical field

[0001] The invention belongs to the field of industrial wastewater treatment, and in particular relates to a wastewater treatment device and method capable of zero-discharge treatment of wastewater. Background technique

[0002] In recent years, with the rapid development of my country's petrochemical and coal chemical industries, the construction scale of industrial circulating cooling water systems, chemical water systems, and boiler systems has become larger and larger, and the resulting problem is a large amount of wastewater discharge. This part of wastewater The discharge accounts for about 10% to 20% of the total water used by enterprises, and all of them contain high salt content. Therefore, if this part of wastewater is directly discharged, a large amount of water resources will be wasted. In addition, the discharge of high-salt wastewater will not only destroy the self-purification ability of local natural water bodies, but also cause adverse effect...

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