A device for strengthening ammonia distillation to treat ammonia nitrogen in wastewater

Abstract

The invention relates to a device for treating ammonia and nitrogen in wastewater by virtue of reinforcing ammonia distillation. The device comprises two sets of reinforcing ammonia distillation devices, wherein the gas inlet of one set of reinforcing ammonia distillation device is connected with a gas-phase outlet of a reboiler; the gas outlet of the other set of reinforcing ammonia distillation device is connected with the gas outlet of one set of reinforcing ammonia distillation device, liquid outlets of the two sets of devices are connected with a buffer tank by virtue of pipelines, after the reinforcing ammonia distillation devices are started, the steam is introduced and a feed pump is simultaneously started to introduce the wastewater, the wastewater exchanges heat with purified hot wastewater through a heat exchanger, enters the reinforcing devices and is uniformly distributed at an inner diameter of a rotary drum by virtue of a liquid distributor, the wastewater is in full contact with steam in a rotating filler so that ammonia and nitrogen in the wastewater are transferred in steam; and treated steam is discharged from the gas outlet and sent to a next-stage treatment procedure or a next-stage device and the obtained purified wastewater enters the wastewater buffer tank, exchanges heat with raw material wastewater through the heat exchanger and enters a next treatment process. The device has the advantages of small area occupation, short material residence time, small gas-liquid ratio and high treatment accuracy and is easy to operate.

Description

Technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a device with high gas-liquid mass transfer efficiency, fast renewal speed, simple structure, small volume and easy operation to strengthen ammonia distillation to treat ammonia nitrogen in wastewater. Background technique [0002] There are many sources of ammonia nitrogen wastewater, and the discharge volume is large. Industrial sectors such as oil refining, fertilizers, inorganic chemicals, ferroalloys, glass manufacturing, meat processing, and feed production discharge large amounts of ammonia nitrogen wastewater with different concentrations. If such ammonia-nitrogen wastewater is discharged without treatment, the dissolved oxygen concentration in the water body will decrease, causing the water body to become black and smelly, and the water quality will decline, which will have a serious impact on the survival of aquatic animals and plants and the safe water use of re...

AI Technical Summary

Problems solved by technology

At present, packed towers are generally used in the market for stripping or stripping treatment of ammonia nitrogen wastewater, but they are often limited by factors such as site space, fan selection, and low treatment accuracy, which restrict their wide application in this field.

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