A monitoring system for resource utilization of high ammonia nitrogen wastewater from wet rare earth smelting

Abstract

The invention discloses a monitor system of resource utilization of wet method rare earth smelting high ammonia-nitrogen wastewater, and the monitoring system comprises the following modules: a wastewater flow control module used to control flow of flowing-in wastewater; an ammonia distillation tower control module used for monitoring the ammonia distillation tower liquid level, temperature and pressure; a discharge control module using ammonia nitrogen detection units arranged at the ammonia distillation tower bottom and a comprehensive treatment tank to detect ammonia nitrogen concentration in wastewater and controlling a lift pump to discharge the wastewater; a cold source circulating module used for real-time monitoring of cooler wastewater temperature and cooler liquid level and control of discharge value of two outlet of a cooler; and a computer workstation which is respectively connected with the wastewater flow control module, the ammonia distillation tower control module, the discharge control module and the cold source circulating module for acquisition and display of process data and process information; when the process data and process information cannot be acquired or exceed thresholds, an information alarm is generated. The monitor system can strengthen the wastewater discharge and cold source circulation control and realize the monitoring of the whole process of recovery.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to a monitoring system for resource utilization of high-ammonia-nitrogen wastewater from wet-process rare earth smelting. Background technique [0002] Rare earth materials play an indispensable and key role in modern emerging green energy technologies, high-tech and national defense systems, such as electric vehicles, wind power generators, lighting and displays, computer hard drives, mobile communications, missile guidance, and smart bombs. These technologies are called "rare earth-dependent technologies" internationally, and there are no other materials that can replace them. Therefore, rare earth materials have become an indispensable strategic material for realizing technology and transforming traditional industries. The rare earth industry has developed rapidly and the scale of the industry has continued to expand, but at the same time of rapid development, there are also m...

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Problems solved by technology

[0004] The existing technology only monitors the stripping treatment part, and there is no monitoring system for other parts of the recovery process. Since the stripping treatment part is in the middle of the entire process flow, the previous process steps will affect the effect of ammonia distillation, while in the The subsequent process steps will affect whether the concentration of ammonia nitrogen in the wastewater meets the discharge standards. Therefore, a monitoring system is urgently needed to monitor the entire recovery process.

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