A zero-discharge wastewater treatment device
A wastewater treatment, zero-discharge technology, applied in the field of water treatment, can solve the problems of dust entering the sewage, high dust content, and insufficient wastewater treatment.
Active Publication Date: 2022-04-12
JIAXING NEW JIES THERMAL POWER
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Problems solved by technology
However, the dust content of this part of the flue gas after dedusting is relatively high. Direct evaporation and concentration will inevitably lead to the dust in the flue gas entering the sewage, and the salt contained in the concentrated waste water that has been concentrated and evaporated is still retained in the waste water, which will eventually lead to Wastewater treatment is not thorough enough
In addition, since the treated wastewater can only be recycled again, its degree of regeneration is low
Method used
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[0038] The following are specific examples of the application, further describing the technical solution of the application, but the application is not limited to these examples.
[0039] Hereinafter, the terms "first", "second", etc. are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first", "second", etc. may expressly or implicitly include one or more of that feature. In the description of the present application, unless otherwise specified, "plurality" means two or more.
[0040] In addition, in this application, orientation terms such as "upper", "lower", "top", "bottom", "left", "right", "horizontal" and "vertical" are schematically positioned relative to the components in the drawings. It should be understood that these directional terms are relative concepts, and they are used for relative description and clarif...
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The application discloses a zero-discharge wastewater treatment device. The wastewater treatment device includes a sedimentation device, a flash evaporation device, a spray device, a dust removal device and a condensation device. The wastewater to be treated is first settled to remove the suspended solid particles and reduce the processing burden on the subsequent treatment device. The clarified wastewater is concentrated through the flash device to obtain the gas phase formed by the evaporation of the liquid and the remaining concentrated wastewater. The industrially usable water is obtained after the gas phase is condensed; the concentrated wastewater is atomized into an atomized liquid and then sprayed directly onto the surface of the dust removal device to generate flue gas, and then the salt solids of solid particles are captured from the flue gas to make the wastewater The salt is collected and reused. As a result, the treatment is more thorough, and the degree of waste water recycling is higher. At the same time, the wastewater treatment device is also stable and energy-saving.
Description
technical field [0001] The invention relates to the technical field of water treatment, in particular to a zero-discharge wastewater treatment device. Background technique [0002] At present, the flue gas treatment in the coal-fired power generation industry basically adopts ultra-low emission technology, and the mainstream desulfurization process in ultra-low emission technology is the limestone-gypsum desulfurization composite wet electrostatic precipitator process. The desulfurization process mainly uses the slurry sprayed in the desulfurization tower to wash sulfur dioxide and other pollutants in the flue gas. During the wet desulfurization process of boiler flue gas, to prevent the concentration of soluble chloride ions and fine dust particles in the slurry from being too high, it is necessary to discharge a certain amount of wastewater from the system to maintain the material balance in the desulfurization device. The impurities contained in desulfurization wastewate...
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IPC IPC(8): C02F9/10
CPCC02F1/06C02F1/52
Inventor 李廉明冯宏俞李斌何德峰胡艳军孟志浩龚俊王琦谈群
Owner JIAXING NEW JIES THERMAL POWER