Low-temperature negative pressure ammonia removal system device based on fluid-jet flow principle

A low-temperature negative pressure, fluid jet technology, applied in degassed water/sewage treatment, neutralized water/sewage treatment, water/sludge/sewage treatment, etc., can solve high energy consumption, large fluctuations in ammonia nitrogen wastewater quality, and system operation Negative pressure control instability and other problems, to achieve the effect of increasing the temperature of the reflux liquid, reducing the impact of system negative pressure, and saving steam consumption

Pending Publication Date: 2017-09-19
JIANGSU HAOSHANHAOSHUI ENVIRONMENTAL SCI & TECH
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Problems solved by technology

Among them, the physical method of ammonia distillation is an effective way to achieve standard treatment and recovery of ammonia nitrogen wastewater; however, there is a problem of high energy consumption. The use of negative pressure deammonization technology can further reduce system energy consumption, but due to large fluctuations in the quality of ammonia nitrogen wastewater, the system cannot operate Negative pressure control is unstable

Method used

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  • Low-temperature negative pressure ammonia removal system device based on fluid-jet flow principle

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Experimental program
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Embodiment 1

[0013] Embodiment 1: A low-temperature negative pressure deamination system device based on the fluid jet principle, comprising a pipeline mixer 1, a preheater 2, a low-temperature deamination tower 3, a condenser 4, and a gas-liquid separation tank 5, and ammonia nitrogen-containing wastewater enters The water pipeline 6 is connected to the pipeline mixer inlet 1.1, the pH regulator feed pipeline 7 is connected to the pipeline mixer dosing port 1.2, the pipeline mixer outlet 1.3 is connected to the first inlet 2.1 of the preheater, and the low-temperature deamination tower 3 includes a tower body 3.1, The feed inlet 3.6 that is arranged on the top of the tower body 3.1, the gas outlet 3.2 that is arranged on the top of the tower body 3.1, the steam inlet 3.3 that is arranged on the bottom end of the tower body 3.1, the deammonized water outlet 3.4 that is arranged on the bottom end of the tower body 3.1 and is arranged on The reflux liquid inlet 3.5 near the top of the tower b...

Embodiment 2

[0014] Embodiment 2: With reference to Embodiment 1, other characteristics remain unchanged, a heat exchanger 22 is arranged between the gas inlet 4.1 of the condenser and the gas outlet 3.2 of the low-temperature deamination tower, and the reflux liquid circulation pipeline 12 passes through the heat exchanger 22 after exchanging heat. Connect the reflux inlet 3.5 of the low-temperature deamination tower.

[0015] Ammonia-nitrogen-containing wastewater is added with a pH regulator through the pipeline mixer to adjust the pH of the wastewater to be alkaline. After heat exchange between the preheater and the tower kettle outlet water, it enters the negative pressure deammonization tower, and countercurrently contacts with the steam in the tower. The steam and the ammonia-containing wastewater Wastewater undergoes mass transfer and heat transfer in the tower. When the ammonia-containing wastewater reaches the bottom of the tower, the ammonia nitrogen is converted into ammonia gas...

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Abstract

The invention discloses a low-temperature negative pressure ammonia removal system device based on a fluid-jet flow principle. The low-temperature negative pressure ammonia removal system device comprises a pipeline mixer, a pre-heater, a low-temperature ammonia removal tower, a condenser and a gas-liquid separation tank, and also comprises an ammonia absorber. The ammonia absorber comprises a shell, a gas inlet formed in the top end of the shell, a circulating liquid inlet and a jet flow outlet; a gas outlet of the condenser and a gas outlet of a gas separation tank are connected with a gas inlet of the ammonia absorber; an ammonia recycling tower comprises a tower body, an inlet formed in the tower body, an absorption liquid charging hole is formed in the upper part of the tower body, a charging hole formed in the middle part of the tower body, an exhaust hole is formed in the top part of the tower body, and a circulating liquid inlet and a discharging hole formed in the bottom part of the tower body; the discharging hole is connected with an output pump; the output pump is connected with a product pipeline; a jet flow outlet of the ammonia absorber is connected with an inlet of the ammonia recycling tower; the absorption liquid charging hole of the ammonia recycling tower is connected with the absorption liquid pipeline; the circulating liquid inlet of the ammonia recycling tower is connected with the circulating liquid inlet of the ammonia absorber through a circulating ammonia washing pipeline; a circulating ammonia washing pump and a cooler are arranged on the circulating ammonia washing pipeline.

Description

technical field [0001] The invention relates to the field of waste water treatment and resource utilization containing ammonia nitrogen, in particular to a low-temperature negative pressure deammonization system device based on the fluid jet principle. Background technique [0002] Various industrial enterprises such as coking, chemical, metallurgical plants, ternary materials, rare earth, zirconium, niobium and tantalum and other non-ferrous metal plants will produce a large amount of high-concentration ammonia nitrogen wastewater. Ammonia nitrogen in this type of wastewater mainly exists in the form of ammonium ions, which is a major pollutant of environmental pollution and the most difficult component to degrade and remove. At present, there are many methods for removing ammonia nitrogen, mainly including physical methods, chemical methods, and biological methods. Among them, the physical method of ammonia distillation is an effective way to achieve standard treatment an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/20B01D53/18C02F101/16
CPCB01D53/18C02F1/20C02F2101/16C02F1/66
Inventor 沈群锋沈小春金猛傅荣华苏小明
Owner JIANGSU HAOSHANHAOSHUI ENVIRONMENTAL SCI & TECH
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