Method for processing industry high-concentration ammonia nitrogen wastewater

Abstract

The invention relates to a method for dealing with industrial high concentration ammonia nitrogen wastewater, which is characterized in that the method consists of deamination agent and a deamination reactor. The deamination agent is a composite catalyst using cellulose derivatives as main agent and a plurality of activators as assistant agents, and comprises a plurality of free radicals and active radicals. The deamination agent can destroy the binding force of water molecules and NH3 molecules, and under the condition that the PH value is 10.5 to 11, the deamination agent leads the NH3 molecules to get rid of the influence of water molecules and exist in the form of free ammonia, and therefore the NH3 molecules are easily released from water. The deamination reactor is a multi-stage continuous aeration air stripping pool and each pool is provided with an aeration device and an ammonia eduction tube. The high concentration ammonia nitrogen wastewater comes into each grade aeration pool from the first pool and is deaminased in each grade aeration pool, and the gas ammonia timely educes the air stripping system by the ammonia eduction tube, and the partially deaminased wastewater sequentially flows into the next grade aeration air stripping pool from the upper grade aeration air stripping pool to continuously carry out aeration air stripping a plurality of times.

Description

1. Technical field: [0001] The invention relates to a method for treating industrial high-concentration ammonia nitrogen wastewater 2. Background technology: [0002] High-concentration ammonia-nitrogen wastewater is one of the industrial wastewater that is difficult to treat. It has a wide range of sources and a large amount of discharge. High-concentration ammonia-nitrogen wastewater is produced in chemical, fertilizer, petrochemical, coking, pharmaceutical, food and other production departments and landfills. A large amount of ammonia nitrogen wastewater is discharged into the water body, causing eutrophication of the water body, causing the water body to be black and smelly, and the quality is reduced, which will increase the difficulty and cost of water treatment, and even cause poisonous effects on the population and aquatic organisms. Due to the recent frequent occurrence of red tides in sea areas, more research has been carried out on the treatment technology of ammo...

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Problems solved by technology

[0011] The disadvantage of the stripping process is that the packing layer is easy to scale; the removal efficiency is greatly affected by temperature and pH; usually the gas-water ratio is required to be 2500-3000:1, and the stripping time is 4-6h longer, so the power consumption is large; high concentration of ammonia nitrogen After the waste water is blown off, it still contains high ammonia nitrogen and cannot be discharged up to the standard. It must be further treated with other subsequent processes such as biochemical method or chlorine oxidation method to meet the discharge requirements.

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