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Denitrification biological stuffing

A biological filler and denitrification technology, applied in the field of denitrification, can solve the problems of unstable distribution of biological flora, poor denitrification effect, damage to suspension brackets, etc., and achieve high load resistance, strong biological adhesion, and convenient installation Effect

Inactive Publication Date: 2017-07-28
浙江川宁环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The improved sewage treatment technology adopts the method of putting filler in the nitrification tank, usually by hanging biological filler, but when it is used for a long time, the filler is blocked by a large amount of biological sludge, which makes the biofilm not easy to fall off, and the hanging bracket is often used. is damaged, the denitrification effect is getting worse and worse
At present, there is still a method of directly putting the biofiller into the pool and using the mechanical stirring equipment in the pool to ensure the uniform distribution of the biofiller in the pool and the regeneration of the biofilm. This denitrification method has high operating costs and biological flora. Unstable distribution, large sludge production, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A nitrogen-removing biological filler, including a spherical shell and a filling filler;

[0017] The preparation method of described spherical shell is:

[0018] Made of polypropylene material into a black hollow sphere, the diameter of the sphere is 280mm, after the sphere is made, place it in deionized water twice its weight, add aluminum dihydrogen phosphate with 5% of the weight of the sphere, and stir at 95°C until the water is dry. A spherical shell is obtained;

[0019] The preparation method of described filler comprises the following steps:

[0020] Take starch, add it to deionized water 40 times its weight, stir evenly, add ethylenediamine tetraacetic acid, polycaprolactone, pass nitrogen gas, raise the temperature to 60 ° C, keep stirring for 2 hours, discharge, cool, Spray-dry to get the filler.

[0021] The number of mesh holes on the spherical shell is 20.

Embodiment 2

[0023] A nitrogen-removing biological filler, including a spherical shell and a filling filler;

[0024] The preparation method of the spherical shell is:

[0025] Made of polypropylene material into a black hollow sphere, the diameter of the sphere is 250mm, after the sphere is made, place it in deionized water 1.8 times its weight, add aluminum dihydrogen phosphate with 4% of the weight of the sphere, and stir at 90°C until the water is dry. A spherical shell is obtained;

[0026] The preparation method of described filler comprises the following steps:

[0027] Take starch, add it to deionized water 30 times its weight, stir evenly, add ethylenediaminetetraacetic acid, polycaprolactone, pass nitrogen gas, raise the temperature to 50 ° C, keep stirring for 1 hour, discharge, cool, Spray-dry to get the filler.

[0028] The number of mesh holes on the spherical shell is 30.

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PUM

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Abstract

The invention discloses a denitrification biological stuffing which comprises a spherical casing and a stuffing. The stuffing is starch grafted polycaprolactone capable of providing a carbon source for nitrifying bacteria, and a plurality of meshes are formed in the surface of the casing and serve as biological carriers. The casing is treated with aluminum dihydrogen phosphate, so that the adsorption performance of the surface of the casing can be improved. The denitrification biological stuffing is large in specific surface area, high in porosity, film forming rate, film forming speed, load resistance, denitrification efficiency, degradability and biostability, strong in biological adhesion force, low in biological sludge yield, free of secondary pollution and convenient to mount, and can be directly released without fixation, and no harmful substances are dissolved.

Description

technical field [0001] The invention belongs to the field of denitrification, and in particular relates to a denitrification biological filler. Background technique [0002] In the process of sewage treatment, anoxic denitrification treatment is a link that plays a key role in the whole sewage treatment system. Usually, the denitrification treatment adopts the large return flow of sludge to the nitrification tank for denitrification treatment. This treatment method needs to arrange stirring equipment in the nitrification tank to ensure the uniform distribution of biological bacteria, which not only increases the operating cost, but also generates a lot of pollution. mud. The improved sewage treatment technology adopts the method of putting filler in the nitrification tank, usually by hanging biological filler, but when it is used for a long time, the filler is blocked by a large amount of biological sludge, which makes the biofilm not easy to fall off, and the hanging brack...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/28C02F101/16
CPCC02F3/2806C02F2101/16
Inventor 邵永富
Owner 浙江川宁环保科技有限公司
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