Multifunctional partitioning denitrification integrated method and multifunctional partitioning denitrification integrated device

Abstract

The invention discloses a multifunctional partitioning denitrification integrated method and a multifunctional partitioning denitrification integrated device. The device comprises a tank body consisting of an inner tank and an outer tank, a space between the inner tank and the outer tank is divided into an inner tank upper pre-denitrification region B and a lower precipitation and oxygen elimination region A by a guide cylinder, and a water collecting tank, a clarification region D formed by an inclined plate, an air pipe distribution cavity, a main denitrification region C formed by a denitrification filler layer and a middle sludge collecting region are sequentially distributed between the inner tank and the outer tank. When denitrification is carried out, granular organic matters in upper inlet water are adsorbed and precipitated to the bottom of the inner tank by the large granular sludge, so that the granular organic matters and the dissolved organic matters are selectively separated, the utilization efficiency of a carbon source is improved, and the denitrification efficiency is further improved. In addition, the device can be transformed into a dephosphorization device and aprecipitation device.

Description

technical field [0001] The invention relates to the technical field of water treatment technology, in particular to a denitrification integrated method and equipment with multifunctional partitions. Background technique [0002] The most commonly used denitrification methods in traditional sewage treatment plants are activated sludge denitrification method and denitrification filter denitrification method. For the activated sludge denitrification method, the mixed liquid is refluxed and stirred in the anoxic tank, and the microorganisms in the activated sludge are used for denitrification and denitrification. There are several problems in this traditional method: [0003] 1. In the traditional denitrification process, in order to remove suspended solids in water, it is necessary to set up sedimentation tanks and clarification tanks to remove suspended solids in water. There are many equipments, high operating costs and large floor space. [0004] 2. Influent organic matter...

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Problems solved by technology

[0003] 1. In the traditional denitrification process, in order to remove suspended solids in water, it is necessary to set up sedimentation tanks and clarifiers to remove suspended solids in water. There are many equipments, high operating costs and large floor space.

[0004] 2. Influent organic matter is divided into dissolved organic matter and granular organic matter. Traditional influent water mixes dissolved organic matter and granular organic matter with nitrifying bacteria, and does not separate granular organic matter.

The utilization rate of denitrifying bacteria on granular organic matter is low, and it is easy to cause the granular organic matter to be completely discharged without being degraded again.

[0005] 3. There is no special treatment for dissolved oxygen in the denitrification process, especially when the nitrification liquid often contains high dissolved oxygen. If the influent water contains dissolved oxygen, it will cause aerobic bacteria to use organic matter in the water to reproduce and form a bottom with denitrifying bacteria. species competition, which is unfavorable to the reproduction of denitrifying bacteria

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