Continuous flow aerobe fluidized bed process

Abstract

The invention discloses a continuous flow aerobe fluidized bed process, which comprises the following steps of: wastewater is stored in a water inlet groove, and is pumped into the bottom of a reactor through a constant flow pump so as to enter a main reactor; the wastewater is filled into the reactor through aeration of an aeration head at the bottom of an air lift pipe in the reactor; sludge is driven to upwards move in the air lift pipe by the airflow, and is subjected to a downward sedimentation movement in a sludge-water separation region at the upper part of the reactor until the sludge enters into the air lift pipe at the main reaction region at the bottom of the reactor again; the wastewater is full of the reactor, and the sludge with the poor sedimentation property is discharged to a water discharge groove at an effluent weir at the upper part of the reactor along with effluent; the main reaction region of the reactor is fully aerated and is in an aerobic condition, and the wastewater is subjected to nitration reactor; when DO (dissolved oxygen) in the sludge-water separation region of the reactor is relatively insufficient and is in an anaerobic condition, the wastewater is subjected to denitrification reaction, and the effect of denitriding is finally realized; phosphorus can be fully absorbed by polyphosphate accumulation bacteria in the sludge-water separation region of the reactor is relatively insufficient and is in an anaerobic condition under the anaerobic condition and the aerobic condition, the last part of the sludge is discharged along with the effluent, and most of sludge continues to react.

Description

technical field [0001] The invention belongs to waste water treatment technology, in particular to a method for treating industrial waste water with high nitrogen and phosphorus content. Background technique The existing wastewater treatment methods are mainly composed of aerobic, anaerobic and biofilm methods, and in the aerobic method, the activated sludge method and its various evolution processes are the main ones, usually including a. traditional push flow, b. Stage aeration method, c. high load aeration method, d. delayed aeration method, e. adsorption regeneration method, f. complete mixing method, g. deep well aeration method, h. pure oxygen aeration method, i. Kraus method, j.AB method, k.SBR method, l. oxidation ditch, m. circulating activated sludge process, etc. These processes have been partially applied in the actual operation process and have achieved certain results, but there are still some problems, such as large tank volume, high infrastructure and oper...

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Problems solved by technology

These processes have been partially applied in the actual operation process and have achieved certain results, but there are still some problems, such as large tank volume, high infrastructure and operating costs, ineffective denitrification and organic matter degradation, troublesome operation and management, etc.

At present, some scholars have begun to study granulated sludge for wastewater treatment, but this research is mainly limited to the cultivation and domestication in batch SBR reactors. The SBR process has relatively strict control conditions and high management requirements.

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