Sewage treatment system with nitrogen and phosphorus removal function

Abstract

The invention discloses a sewage treatment system with a nitrogen and phosphorus removal function. The system disclosed by the invention not only can improve the purification efficiency of sewage, butalso can treat nitrogen and phosphorus more thoroughly. By arranging a nitration ball net assembly which can rotate in water along with a water flow, nitrobacteria are attached to the nitration ballnet assembly; an assisted air pump is arranged on the nitration ball net assembly, so that the oxygen demand of nitrobacteria is ensured, and the nitrobacteria are hardly flushed by the water flow. Inaddition, by means of aeration by way of an aeration tube, the aeration effect is good, and the demand on stirring is relatively low. A filter pond is good in filter effect, and nitrogen and phosphorus can be thoroughly removed, and the purified water is clear and can be directly used repeatedly nearly.

Description

Technical field [0001] The invention relates to a sewage treatment system with the function of removing nitrogen and phosphorus, and belongs to the technical field of sewage treatment auxiliary equipment. Background technique [0002] Nitrogen and phosphorus are important nutrient sources for organisms. With the widespread use of chemical fertilizers, detergents and pesticides, the content of nitrogen and phosphorus in natural waters has increased sharply. In the waters, cyanobacteria and green algae proliferate in large numbers, and the water is deprived of oxygen and produce toxins, which deteriorate water quality. , It is very harmful to aquatic organisms and human health. At present, with the increasingly strict environmental protection policies, the strict requirements for nitrogen and phosphorus have become increasingly prominent. The existing urban sewage treatment plants in my country mainly focus on the removal of organic matter. The primary treatment of sewage (waste) w...

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Problems solved by technology

[0003] In the current sewage treatment, for the aerobic tank, the general structure is relatively simple, only the aeration plate is set, the aerobic tank with this structure is generally located at the bottom of the tank, so it is constantly stirred by the mixer, but the mixer is During the mixing process, only part of the area can still be moved. Moreover, too much movement of the mixer can easily cause nitrifying bacteria to be washed away with the water flow, which in turn leads to poor sewage treatment effect and slow treatment rate, which is difficult to meet the current large amount of sewage. processing request

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