High-ammonia-nitrogen low-C/N-ratio wastewater treatment system and treatment technique

Abstract

The invention relates to a high-ammonia-nitrogen low-C / N-ratio wastewater treatment system and treatment technique, belonging to the technical field of wastewater treatment. The system comprises a hydrolysis acidification tank, an anoxic tank, a microaerobic nitrosification tank and an aerobic tank, wherein the hydrolysis acidification tank communicates with the anoxic tank; the anoxic tank is connected with the microaerobic nitrosification tank through a pipeline; the microaerobic nitrosification tank is connected with the aerobic tank through a pipeline; a nitrosification liquid reflux pipeline is arranged between the microaerobic nitrosification tank and the anoxic tank; and a nitrosification solution reflux pipeline is arranged between the aerobic tank and the anoxic tank. The treatment system and treatment technique have favorable enhancement effects on wastewater treatment and reconstruction of leather wastewater, synthetic ammonia and nitrogen fertilizer techniques, and are suitable for treating high-ammonia-nitrogen low-C / N-ratio wastewater. The treatment system and treatment technique have the advantages of favorable denitrification effect and low operating cost, and can achieve the goal of simultaneously removing ammonia nitrogen and total nitrogen.

Description

technical field

[0001] The invention belongs to the technical field of waste water treatment, and in particular relates to a high ammonia nitrogen low C / N ratio waste water treatment system and a treatment process. Background technique

[0002] As the shortage of water resources and the deterioration of water environment quality have increasingly become obstacles to social and economic development, it is necessary to improve the efficiency and degree of sewage treatment, strengthen the efficiency of nitrogen and phosphorus removal in sewage treatment plants, eliminate the root causes of eutrophication in water bodies, and reduce sewage treatment. cost has become a top priority. In recent years, the State Environmental Protection Administration has issued an increase in sewage discharge standards, and the quality of effluent water from various sewage treatment plants has also been improved accordingly. However, insufficient carbon sources and poor nitrogen removal effects are...

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