Ammonia nitrogen recovery system for hair product wastewater and operating method of system

Abstract

The invention discloses an ammonia nitrogen recovery system for hair product wastewater and an operating method thereof, and belongs to the technical field of high-concentration ammonia nitrogen wastewater treatment and ammonia nitrogen recovery. The present invention integrates the heating reaction tank and the reaction sedimentation tank into one, by adding the precipitating agent MgCl to the heating reaction tank 2 solution and Na 2 HPO 4 solution to complete the chemical reaction, the reaction sedimentation tank is designed as an overflow weir, and the reacted water in the heated reaction tank enters the reaction sedimentation tank through overflow, and the generated MgNH 4 PO 4 ·6H 2 O is precipitated in the reaction sedimentation tank, and the clarified sewage overflows from the surrounding of the reaction sedimentation tank. The sediment in the sludge hopper of the reaction sedimentation tank is treated by a plate and frame filter press and transported outside for further stacking treatment as fertilizer. The invention has compact equipment, small occupied area, easy realization of automatic control, simple operation management, stable operation, better removal of ammonia nitrogen and realization of resource recovery and reuse.

Description

technical field [0001] The invention belongs to the technical field of high-concentration ammonia nitrogen wastewater treatment and ammonia nitrogen recovery, and specifically relates to an ammonia nitrogen recovery system for hair product wastewater and an operating method thereof. Background technique [0002] In the production process of hair products, multiple processes such as pickling, neutralization, rinsing, and dyeing and finishing of hair raw materials are required. The neutralized and rinsed wastewater contains high concentration of ammonia nitrogen, therefore, it is of great significance to provide an effective ammonia nitrogen recovery system and method. [0003] At present, the traditional biological denitrification method, ammonia stripping method, ion exchange method, breakpoint chlorination method and magnesium ammonium phosphate (MAP) chemical precipitation method are mainly used for the treatment of high-concentration ammonia nitrogen wastewater. [0004]...

AI Technical Summary

Problems solved by technology

However, this process did not realize the recovery and reuse of high-concentration ammonia nitrogen, which caused a waste of resources to a certain extent.

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