High-ammonia-nitrogen sewage treatment circulating pool and sewage treatment device and process with circulating pool

Abstract

The invention discloses a high-ammonia-nitrogen sewage treatment circulating pool, a sewage treatment device consisting of the sewage treatment circulating pool and a sewage treatment process. The high-ammonia-nitrogen sewage treatment circulating pool comprises a sewage pool and a sedimentation pool. The high-ammonia-nitrogen sewage treatment device of the sewage treatment circulating pool comprises a circulating pool body and a vertical rotary foam separating device, wherein the vertical rotary foam separating device consists of a wave duct, a gas-liquid separation tank and a tail gas pipe. The sewage treatment device has the advantages that the stability problem of air bubbles is effectively controlled, the denitriding blow-off efficiency when the ammonia-nitrogen sewage is at normal temperature can be further improved, the floor space of the device can be effectively decreased, the mechanical strength of the wave duct and a tail gas purifying pipe is improved, the device is more flexible to install, a process route is friendly to the environment, simple and efficient, the cost is low, the universality and repeatability are good, and the device has a wide market prospect.

Description

technical field [0001] The invention relates to a sewage treatment device and process in the field of environmental protection, in particular to a high ammonia nitrogen sewage treatment circulation pool, and a sewage treatment device and sewage treatment process composed of the sewage circulation pool. Background technique [0002] At present, the types of sewage treatment processes used in my country mainly include the following types: traditional activated sludge treatment process, AB process, A / O and A2 / O process, hydrolysis-aerobic process, oxidation ditch process, SBR and its variant process, Biological aerated filter process, biological contact oxidation process, oxidation pond, BIOLAK and land treatment process. With the development of sewage treatment, a variety of sewage treatment processes have been applied in my country's sewage treatment plants, among which A / O, A2 / O and their deformation processes, oxidation ditch, SBR and their variant processes are the main one...

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Problems solved by technology

[0004] Simple circulation tank design, when used for denitrification of 200-600mg / L ammonia nitrogen sewage at room temperature, the residence time in the circulation tank is short, resulting in incomplete separation, reduced mass transfer driving force, and reduced stripping efficiency;

[0005] It is used for industrial sewage with high content of tar components, high viscosity and surface tension of water, and high foaming coefficient. The large amount of sewage produced is highly stable, which will cause the wave tube to flood, and even fill the wave tube in severe cases. , making the system inoperable;

[0006] It is difficult for the device to meet the normal temperature denitrification requirements of ultra-large-scale high-ammonia-nitrogen sewage;

[0007] The rotating foam separation method high ammonia nitrogen sewage denitrification device designed by the circulation tank at room temperature, when used for the treatment of large water volume and high ammonia nitrogen sewage above 5000mg / L, requires a large area and is difficult to be used in the production equipment. The degree of intensification is high modern enterprises, as well as those small and medium-sized enterprises with a small area of ​​concentrated open space;

[0008] The rotating foam separation method denitrification device for high ammonia nitrogen sewage at room temperature designed by the circulation tank is used for large-scale water treatment. The circulation tank needs to bear large mechanical strength and dynamic load, which requires a large increase in equipment costs.

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