Waste-liquid zero-discharge processing apparatus and waste-liquid processing method

Abstract

The invention discloses a waste-liquid zero-discharge processing apparatus and a waste-liquid processing method. The processing apparatus comprises waste-liquid conveying equipment, a pre-settlement pool, a buffer pool, atomization equipment, a solid-liquid-gas separation device and a dedusting device; a water conveying pipe of the waste-liquid conveying equipment is connected with the pre-settlement pool, the pre-settlement pool is connected with the buffer pool, and the buffer pool is connected with the atomization equipment via a water conveying pipe; and the atomization equipment is disposed at the inlet at the top of the solid-liquid-gas separation device, and the gas outlet of the solid-liquid-gas device is connected with the dedusting device via a pipe. The processing method comprises enabling wastewater to enter the buffer pool via the pre-settlement pool, atomizing through the atomization equipment, then sending to the top inlet of the solid-liquid-gas separation device; introducing a high-temperature gas flow via the top inlet, so as to vapor water in atomized small liquid drops and obtain impurity particles, and agglomerating and forming relatively large agglomerated inclusions through high-intensity sound waste emitted by the sounding device, and enabling the agglomerated inclusions to become a stalling state and accelerate to sink through the static-pressure capacity expanding area, and discharging. Through the unique apparatus design, wastewater is furthered purified, and the purpose of zero discharge is finally reached.

Description

technical field [0001] The invention relates to a waste liquid treatment device and a treatment method thereof, in particular to a waste liquid zero discharge treatment device used in thermal power, steel and other fields. Background technique [0002] With the progress of society and the development of economy, the pollution of thermal power plants to the atmospheric environment has been widely concerned by people. Therefore, it is a severe challenge for the sustainable development of my country's energy field to effectively reduce pollutant emissions and improve the impact on the environment. [0003] At present, the existing flue gas desulfurization technologies include wet desulfurization and dry desulfurization. Among them, wet desulfurization technology is the most widely used. Wet flue gas desulfurization is a technological process adopted by about 85% of large thermal power plants in the world today. Due to the high content of mercury, lead, nickel, arsenic and chr...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a brand-new waste liquid zero discharge treatment device and its treatment method in order to overcome the above deficiencies in the prior art. The device uses a high-energy sounding device and a unique static pressure expansion design to form solid-liquid-gas separation The device solves the zero-discharge treatment method of solid-liquid separation through high-temperature evaporation. The pipeline in front of the dust removal device is caused by the continuous passage of salt after crystallization in the waste water. The problem of aggravated ash accumulation and scaling in parts can effectively avoid related problems such as increased energy consumption of boiler units, passive shutdown of boiler units, excessive discharge of air pollutants such as smoke and dust due to ash accumulation and fouling blockage, and comprehensively realize energy saving and environmental protection and zero discharge of waste water and waste gas Target

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