Synchronous denitrification and dephosphorization bio-filter packing and preparation method thereof

A simultaneous denitrification and phosphorus removal and biological filter technology, applied in the field of simultaneous denitrification and phosphorus removal biological filter filler and its preparation, can solve the problems of denitrification and phosphorus removal water treatment technology and functional materials to be developed, and reach the load capacity Large size, reduced production cost, high porosity effect

Active Publication Date: 2013-02-13
中科华鹿(合肥)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

Although these methods have good effects on phosphorus removal, water treatment technologies and functional materials for simultaneous nitrogen and phosphorus removal have yet to be developed.

Method used

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  • Synchronous denitrification and dephosphorization bio-filter packing and preparation method thereof
  • Synchronous denitrification and dephosphorization bio-filter packing and preparation method thereof
  • Synchronous denitrification and dephosphorization bio-filter packing and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] In this embodiment, the filler for the simultaneous denitrification and dephosphorization biological filter is prepared according to the following method:

[0030] Clinoptilolite ore is crushed to obtain 30-80 mesh zeolite powder, 600g zeolite powder and 200g No. 425 cement are added to the mixer and mixed for 30 minutes, so that the two raw materials are mixed evenly to obtain a mixture; the mixture is evenly sprinkled into In the ball forming plate, the ball forming plate rotates at a speed of 5 revolutions per minute. While spreading the mixture, spray water evenly on the mixture in the ball forming plate to make the mixture roll into spherical particles. The amount of water sprayed is related to the quality of the mixture. The ratio is 1:1. As the particles roll in the ball forming disk, the diameter of the particles increases continuously until the particle diameter reaches 3-5mm. The particles are discharged from the ball forming disk, and then the prepared spheric...

Embodiment 2

[0032] In this embodiment, the filler for the simultaneous denitrification and dephosphorization biological filter is prepared according to the following method:

[0033] Clinoptilolite ore is crushed to obtain 30-80 mesh zeolite powder, 500g zeolite powder and 500g No. 425 cement are added to the mixer and mixed for 30 minutes, so that the two raw materials are mixed evenly to obtain a mixture; the mixture is evenly sprinkled into In the ball forming plate, the ball forming plate rotates at a speed of 50 revolutions per minute. While spreading the mixture, spray water evenly on the mixture in the ball forming plate to make the mixture roll into spherical particles. The amount of water sprayed and the quality of the mixture The ratio is 2:1. As the particles roll in the ball forming disk, the particle diameter increases continuously until the particle diameter reaches 4-6mm. The particles are discharged from the ball forming disk, and then the prepared spherical particles are p...

Embodiment 3

[0035] In this embodiment, the filler for the simultaneous denitrification and dephosphorization biological filter is prepared according to the following method:

[0036] Clinoptilolite ore is crushed to obtain 30-80 mesh zeolite powder, 200g zeolite powder and 800g No. 425 cement are added to the mixer and mixed for 30 minutes, so that the two raw materials are mixed evenly to obtain a mixture; In the ball forming plate, the ball forming plate rotates at a speed of 100 revolutions per minute. While spreading the mixture, spray water evenly on the mixture in the ball forming plate to make the mixture roll into spherical particles. The amount of water sprayed is related to the quality of the mixture. The ratio is 1:2. As the particles roll in the ball forming disk, the particle diameter increases continuously until the particle diameter reaches 6-8mm. The particles are discharged from the ball forming disk, and then the prepared spherical particles are piled up. Moisturize and ...

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Abstract

The invention discloses a synchronous denitrification and dephosphorization bio-filter packing and a preparation method thereof. The raw materials of the synchronous denitrification and dephosphorization bio-filter packing are zeolite ore and cement, and the mass ratio of zeolite ore to cement is (3:1)-(1:4). The preparation method disclosed by the invention comprises the following steps: crushing the zeolite ore so as to obtain zeolite powder with 30-80 meshes; mixing the zeolite powder with the cement so as to obtain a mixture; molding the mixture by using a disc granulator or an extruder so as to obtain granules with the granule size of 2-10 mm); and standing still the obtained granules for no less than 10 days at normal temperature so as to obtain a finished product. The bio-filter packing disclosed by the invention are high in porosity and large in granule size, therefore, microbes can penetrate into the internal gaps of the granules; and as the bio-filter packing, the material provided by the invention has large microbe loading capacity. By using the bio-filter packing, the nitrifying and denitrifying denitrification and adsorbing dephosphorization effects in waster water are completed under the action of microbes; and the high-adsorption biological carrier material disclosed by the invention is low in cost, and has a function of synchronous denitrification and dephosphorization.

Description

1. Technical field [0001] The invention relates to a biological filter filler and a preparation method thereof, in particular to a simultaneous denitrification and phosphorus removal biological filter filler and a preparation method thereof. 2. Background technology [0002] With the aggravation of water pollution, eutrophication has generally occurred in surface water bodies in my country. This requires more stringent denitrification and phosphorus removal of sewage. The nitrogen in the secondary effluent of domestic sewage and the surface landscape water mainly exists in the form of ammonia, nitrate, nitrite, and organic nitrogen, and the phosphorus in it mainly exists in the form of orthophosphate and organic phosphorus. [0003] At present, the ammonia nitrogen in advanced treatment water is mainly converted into nitrate and nitrite nitrogen through microbial nitrification in the biological aerated filter. The removal rate of ammonia nitrogen can reach more than 90%, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/10C02F3/30C04B28/04B28B3/20
CPCY02W10/10
Inventor 陈天虎谢晶晶钱家忠鲍韬李平
Owner 中科华鹿(合肥)环保科技有限公司
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