Method for evaporative purifying treatment of wastewater by adopting solar combination heating, and system thereof

Abstract

The invention relates to a method for evaporative purifying treatment of wastewater by adopting solar combination heating, and a system thereof. The method comprises the following steps: carrying out preliminary heat exchange treatment on wastewater, introducing the obtained wastewater into an evaporating chamber, carrying out two-stage atomization atomization treatment on the wastewater in a centrifugal bumping mode to make the wastewater form uniformly dispersed liquid spray with the micron-sized liquid phase material in the evaporating chamber, the liquid spray enters an evaporating space, rises through a fan, and bumps or / and breaks under the action of solar combination heating in the rising process to form steam, separating from impurities, sucking the rising steam to a condensation tank through an exhausting machine, carrying out heat exchange to form clear water, and discharging the clear water or allowing the clear water to enter a subsequent biochemical treatment system for further purification. The evaporative purifying treatment is carried out in a closed evaporation space, so the occupied area is small, the removal efficiency of organic pollutants is high, and the effectiveness is fast; and a solar and electric heating or oil heating alternative heating mode is adopted, so the method and the system thereof can adapt to needs of various different purifying environment conditions, pollution to environment is reduced, and the operating cost is saved.

Description

Technical field [0001] The invention relates to the field of wastewater purification, in particular to a method that can produce concentrated liquid for difficult-to-biochemical wastewater, electroplating wastewater, nanofiltration or RO membrane, printing and dyeing wastewater, etc. through solar combined heating method to evaporate and purify wastewater to achieve zero discharge effect And its application system. Background technique [0002] my country is a severely water-scarce country, and water pollution has made water shortages worse. The chemical industry alone produces tens of billions of tons of wastewater each year. Among them, wastewater from the production of dyes, pharmaceuticals, and intermediates has become a world-recognized problem because of its high concentration, high toxicity, and difficulty in degradation. How to improve treatment efficiency and reduce investment is crucial for high-concentration, refractory organic industrial wastewater treatment projects...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a method for purifying waste water by evaporative treatment using combined solar energy heating, aiming to solve the problem that the existing waste water treatment technology adopts biological method, chemical method or biochemical method, etc. Defects of high cost, low removal efficiency of organic pollutants, and slow effect

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