Continuous flow type reactor

Abstract

The invention relates to a continuous flow type reactor, comprising: a reaction column, the upper and lower ends of which are respectively provided with a water outlet and a water inlet; a volcanic rock layer, a filler layer and a cobblestone supporting layer are sequentially arranged between the water outlet and the water inlet in the reaction column from top to bottom; the filler layer comprises lignocellulose, a metal substance, oligosaccharide and biological enzyme. Lignocellulose is used as a slow-release carbon source and a biofilm formation carrier, and can release organic matters as electron donors for denitrification of denitrifying bacteria under the action of water soaking and microorganisms, so that nitrate nitrogen is reduced into nitrogen, and sewage denitrification is realized; the metal substance reduces the oxidation-reduction potential of the water body, creates a reduction environment which is more beneficial to the survival of denitrifying bacteria, stimulates the evolution of microorganisms to increase the diversity of the microorganisms, strengthens the aggregation of the microorganisms to increase the biomass, and improves the biodegradability; the continuous flow type reactor is mainly used for efficient nitrogen removal of domestic sewage, river and lake water bodies, aquaculture wastewater and the like, and has a certain phosphorus removal function.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a continuous flow reactor. Background technique [0002] Nitrogen pollution is one of the most serious problems faced by various water bodies in my country. my country's current highest total nitrogen discharge standard is Class A (GB18918-2002), but the Class A total nitrogen limit (≤15mg / L) is the surface water Class IV (total nitrogen ≤ 1.5mg / L), its secondary pollution to the water body cannot be ignored, especially when the discharged water body is a closed water body, it is even more difficult to meet the water quality requirements, so economical and efficient deep denitrification is urgently needed technology. In addition, with the continuous development of my country's economy, the increase in the use of nitrogen and phosphorus substances, and the use of a large number of agricultural chemical fertilizers have led to a low carbon-to-nitrogen ratio in my country's c...

AI Technical Summary

Problems solved by technology

However, most natural cellulose materials have low mechanical strength and short service life

Since the plant carrier may block the system after the release period is over, it is generally necessary to set up a separate dosing area for future maintenance and operation. Therefore, if the life of the filler is too short and the mechanical strength is insufficient, the cost and difficulty of operation and maintenance will increase.

In addition, the total nitrogen removal rate of pure cellulose carbon source materials is difficult to reach more than 70% in practical applications, and the nitrogen removal effect needs to be improved.

Images