Integrated iods reactor

Abstract

The invention discloses an integrated IODS reactor. The anoxic zone, the aerobic zone and the precipitation zone are arranged in the form of three parallel corridors at one end of the reactor, and the pre-denitrification + selection zone and the anaerobic zone are arranged at the end of the reactor. At the other end, all functional areas are neatly and compactly arranged in a one-piece structure. The sewage enters the reactor in a staged manner. A part of the sewage and the return sludge first enter the pre-denitrification + selection zone for full contact reaction and then enter the anaerobic zone, and the other part of the sewage directly enters the anaerobic zone. The sewage in the anaerobic zone enters the beginning of the anoxic zone through the perforated wall, and the first cycle (denitrogenation cycle) is formed between the anoxic zone and the aerobic zone through the circulation power provided by the air push-flow zone, and between the aerobic zone and the precipitation zone The second cycle (precipitation cycle) is formed by the circulating power provided by the air push-flow zone, and the treated effluent is discharged from the reactor from the sedimentation zone.

Description

technical field [0001] The invention relates to a sewage treatment reactor, in particular to an integrated IODS reactor and a corresponding sewage treatment method. Background technique [0002] 1. Total nitrogen (TN) and total phosphorus (TP) are the main indicators of the pollution degree of water bodies by nutrient substances. When the nitrogen and phosphorus substances in the water exceed the standard, it will cause algae and other plankton to multiply rapidly, the dissolved oxygen in the water body will decrease, and the water quality will be reduced. Deterioration, fish and other organisms die in large numbers. [0003] 2. In February 2015, the Standing Committee of the Political Bureau of the Central Committee deliberated and approved the "Water Pollution Prevention and Control Action Plan", referred to as "Water Ten Measures", and issued it on April 2. The "Water Ten Measures" put forward specific requirements for the prevention and control of industrial pollution a...

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Problems solved by technology

[0005] 3. At present, domestic sewage treatment plants generally adopt processes such as oxidation ditch, SBR, A / A / O, and BAF. With the introduction of the "Water Ten Measures", most of them are facing the problem of standard upgrading and transformation. Due to the low discharge standards used in design And the short board limitation of the process itself, the upgrading of the standard puts forward higher requirements for the three-level intensive treatment section, such as the need to increase the dosage, increase the dosage of carbon sources and increase the installed capacity, etc.

[0006] 4. For newly-built sewage treatment plants, if the traditional sewage treatment process is adopted, in order to achieve higher denitrification and phosphorus removal efficiency and the degree of degradation of other pollutants, it is necessary to increase the reactor volume, strengthen pretreatment, strengthen advanced treatment, increase The installed capacity can only be achieved by increasing the dosage, which greatly increases the cost of sewage treatment and the difficulty of operation and maintenance of the water plant

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