Denitrification filter tank for reducing carbon source consumption and operation method thereof

A denitrification filter, carbon source consumption technology, applied in the direction of chemical instruments and methods, water treatment parameter control, special treatment goals, etc., can solve the problems of high nitrogen consumption, affecting the efficiency of sewage filtration and treatment, etc., to achieve strong energy, The effect of improving utilization rate and improving processing efficiency

Active Publication Date: 2020-01-17
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the denitrification filter forms a layer of nitrogen film on the filter layer, which affects the efficiency of sewage filtration and treatment, and the cost of continuous nitrogen collection is relatively high.

Method used

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  • Denitrification filter tank for reducing carbon source consumption and operation method thereof
  • Denitrification filter tank for reducing carbon source consumption and operation method thereof
  • Denitrification filter tank for reducing carbon source consumption and operation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1: A kind of denitrification filter tank that reduces carbon source consumption, comprises ultrasonic treatment tank 1, carbon source dosing tank 2 and denitrification filter tank 3, is connected with pipe diameter change section 10 on the ultrasonic treatment tank 1, pipe diameter The changing section 10 is a tubular structure with a thin front end and a thick rear end; an ultrasonic generator 11 is provided at the inner bottom of the ultrasonic treatment pool 1, the working frequency of the ultrasonic generator 11 is 25KHZ, and the power density of the ultrasonic generator 11 is greater than 0.35W / cm 2 , the cavitation effect of ultrasonic waves makes it produce a large number of small bubbles when it acts on sewage, and local tensile stress appears in the water body to form negative pressure, so that the oxygen originally dissolved in sewage is supersaturated and escapes from the sewage to become small bubbles; in addition, due to The ultrasonic frequency i...

Embodiment 2

[0038] Embodiment 2: the difference between embodiment 2 and embodiment 1 is: the sewage treatment capacity of denitrification filter 3 is 20,000 tons / day, and the single cell filter size L * B = 36.58m * 4.27m, altogether 1 Grid, the size of the head is changed from DN400 to DN600, the ratio is 1.5, the volume of the ultrasonic treatment tank 1 is L×B×H=2m×2m×2m, and the distance between the ultrasonic conducting rods 110 installed at the bottom of the vertical ultrasonic treatment tank 1 is 0.4m , the distance from the pool wall is 0.4m, and a total of 16 are installed at the bottom of the pool; the transmission power of the ultrasonic generator 11 is set at 1700W, the height of the lower edge of the water outlet is 1.6m, and the residence time of the sewage is 27.65s; the carbon source dosing pool The volume of 2 is the same as that of ultrasonic treatment tank 1. The dosing port of carbon source dosing pipe 22 is fixed close to the wall of carbon source dosing tank 2 at a h...

Embodiment 3

[0039] Embodiment 3: The difference between embodiment 3 and embodiment 1 is: the sewage treatment capacity of the denitrification filter 3 is 100,000 tons / day, and the size of the single cell filter is L×B=25.50m×4.26m, a total of 8 grid, the size head is changed from DN400 to DN800, and the ratio is 2. The volume of the ultrasonic treatment pool 1 is L×B×H=3m×3m×3m. The ultrasonic conductive rods 110 installed at the bottom of the vertical ultrasonic treatment pool 1 are spaced at 0.3m intervals, and the distance from the pool wall is 0.3m. A total of 81 rods are installed. , the transmission power of the ultrasonic generating device 11 is set to 990W, the height of the lower edge of the water outlet is 2.6m, the residence time of the sewage is 20.22s, the volume of the carbon source dosing pool 2 is the same as that of the ultrasonic treatment pool 1, and the carbon source dosing pipe 22 The dosing port is fixed close to the wall of the carbon source dosing pool 2 at a heig...

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Abstract

The invention discloses a denitrification filter tank capable of reducing carbon source consumption. The denitrification filter tank comprises an ultrasonic treatment tank, a carbon source feeding tank and a denitrification filter tank unit; a pipe diameter changing section is arranged on the ultrasonic treatment tank; an ultrasonic generation device and a gas distribution plate are arranged in the ultrasonic treatment tank; an ultrasonic conduction rod body is arranged on the ultrasonic generation device; the carbon source feeding tank is communicated with the ultrasonic treatment tank; a carbon source feeding stirrer and a carbon source feeding pipe are arranged in the carbon source feeding tank; the denitrification filter tank unit is connected with the carbon source feeding tank; the denitrification filter tank is internally provided with a water distribution plate and a denitrification filler frame, the denitrification filler frame is connected with the water distribution plate, the denitrification filler frame is internally provided with a quartz filler, the mounting plate is provided with a cleaning pipe, and the cleaning pipe is communicated with the denitrification fillerframe. The structure design is reasonable, the operation efficiency of existing filter tanks can be effectively improved, investment is saved, and the denitrification filter tank is suitable for large-scale popularization.

Description

technical field [0001] The invention relates to the technical field of sewage treatment equipment, in particular to a denitrification filter for reducing carbon source consumption and an operating method thereof. Background technique [0002] The denitrification filter is a sewage advanced treatment structure that uses the denitrification of microorganisms to reduce total nitrogen. In the advanced treatment, due to the lack of carbon source in the influent, the denitrification filter often needs to continuously add carbon source during the operation process, and the influent of the denitrification filter is mostly secondary biochemical tail water, and the influent itself Carry a certain amount of dissolved oxygen. On the other hand, in the actual project, the incoming water will bring a part of dissolved oxygen along with the process of atmospheric reoxygenation. Dissolved oxygen will affect the activity of denitrifying bacteria in the filter, inhibit denitrification, incre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCC02F1/20C02F1/36C02F3/2826C02F3/2866C02F9/00C02F2203/006C02F2209/22C02F2303/14
Inventor 黄辉余超杰范林
Owner NANJING UNIV
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