Wastewater reduction method combining hyperbolic tower and mechanical atomization evaporator

Abstract

The invention relates to a wastewater treatment technology, and aims to provide a wastewater reduction method combining a hyperbolic tower and a mechanical atomization evaporator. A mechanical atomization evaporator is used for forming vertically upward water mist, atomized liquid drops are driven by continuous airflow to diffuse and evaporate upwards, water in the atomized liquid drops is gasified and discharged from the top of the tower, and inorganic salt components are crystallized and separated out and fall down due to the gravity effect to be collected and treated regularly; large liquid drops which are not atomized fall back into the waste water pool under the action of gravity and then go through the next cycle process. The natural evaporation efficiency can be greatly improved, the occupied area of the evaporation pond is reduced, meanwhile, the risk of polluting the environment is reduced through the closed space, and water-salt separation can be efficiently achieved in a low-carbon mode. The evaporation efficiency is improved, and the process can be cyclically carried out. Salt particles and volatile organic compounds are effectively collected in the semi-closed tower, so that the surrounding environment is prevented from being polluted; and energy and materials are saved, the construction difficulty is low, the occupied area is small, and the manufacturing cost is low.

Description

technical field [0001] The invention relates to wastewater treatment technology, in particular to a method for reducing wastewater by combining a hyperbolic tower and a mechanical atomization evaporator. Background technique [0002] The treatment of salt-containing and organic-containing wastewater (including high-salt wastewater, desulfurization wastewater, aquaculture wastewater, etc.) produced in the industrial production process has been widely concerned. At present, for the treatment of this part of high-concentration wastewater, there are mainly the following two solutions: first, using the principle of evaporation and concentration, relying on coal combustion, introduction of boiler steam and other heat sources to heat and evaporate the wastewater, and the water and volatile organic compounds become gaseous, The salt is continuously concentrated to reach the saturated solubility and precipitated, crystallized into a solid state, and finally dehydrated and dried into ...

AI Technical Summary

Problems solved by technology

The above two schemes have their own advantages and disadvantages: the first scheme has a high degree of treatment and mature technology, but the energy consumption per ton of water is high, and the average per ton of water treatment cost is more than 100 yuan; at the same time, the higher evaporation temperature causes waste water Scale adheres and accumulates on the surface of the evaporator, which affects the stability and safety of equipment operation, and requires regular shutdown for descaling

The second method makes full use of natural conditions, low operating costs, simple equipment management and maintenance, and long service life; but the disadvantages are that it occupies a large area, is greatly affected by climate conditions, has low long-term efficiency, low evaporation, and has a negative effect on the evaporation pond. The anti-seepage requirements are high. Once leakage occurs, it will cause serious environmental pollution. In principle, it cannot be used to store wastewater containing volatile organic compounds.

However, there is also the risk that the atomized wastewater droplets will fall out of the evaporation pond with the wind and pollute the surrounding environment, and this solution requires a large-scale pool on site, and the water vapor generated by the mechanical atomization evaporator is easy to gather in the The saturated atmosphere around the evaporation pond is not conducive to the further evaporation of sewage

[0004] At present, there is no green, low-carbon, and efficient solution for high-concentration wastewater on the market. It is a realistic need to provide a new treatment method.

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