Processing method of coking steaming ammonia wastewater

Abstract

The invention discloses a processing method of coking steaming ammonia wastewater. The processing method of the coking steaming ammonia wastewater comprises pretreatment of coking steaming ammonia wastewater and biochemical treatment of the coking ammonia wastewater. The pretreatment of the coking steaming ammonia wastewater uses an adjusting pool, an internal electrolysis reactor, a Fenton oxidation pond and a coagulative precipitation tank. A sequencing batch membrane bioreactor technology is adopted by the biochemical treatment, and working procedures of inflow, unused-leaving, reacting and discharging are sequentially performed according to a time period. The processing method of the coking steaming ammonia wastewater can effectively remove persistent organic pollutants and ammonia nitrogen, strengthen effluent quality, and reduce operational and investing costs of equipment.

Description

technical field [0001] The invention belongs to the technical field of water treatment, in particular to a treatment method for coking ammonia distillation wastewater. Background technique [0002] The metallurgical industry is a super large pollutant discharge in my country, and coking wastewater is one of the largest pollution sources in the metallurgical industry. In addition to a large amount of volatile phenols, COD, cyanides, and sulfides, coking wastewater also contains high concentrations of ammonia nitrogen and many refractory fused-ring aromatics and heterocyclic compounds, such as indole, naphthalene, quinoline, etc., which are harmful to the environment. It has a great impact and is considered to be one of the most difficult industrial wastewater. It has been a difficult problem for various metallurgical enterprises in the country for a long time. In recent years, with the development of my country's iron and steel industry, the scale of the corresponding coking...

AI Technical Summary

Problems solved by technology

However, the operation and investment costs of the tertiary treatment process are relatively high. If an appropriate pretreatment process can be selected, the content of toxic factors entering the secondary biochemical system can be greatly reduced after pretreatment, and the biodegradability of wastewater can be improved. In addition, the subsequent use of an efficient biochemical treatment system to strengthen the treatment of effluent water quality, in order to replace the costly tertiary treatment process, has important practical significance for the sustainable development of enterprises

Images