Low-density zeolite biological aerated filter filling and preparation method thereof

An aerated biological filter, low-density technology, applied in the field of microbial carrier and its preparation, can solve the problems of high effluent quality, waste of water resources, less than 5% sewage reuse rate, etc., and achieves low treatment cost, energy saving, High efficiency in removing ammonia nitrogen

Inactive Publication Date: 2012-09-26
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, my country is also one of the countries with the most serious waste of water resources, and the sewage reuse rate is less than 5%.
(2) High effluent quality

Method used

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  • Low-density zeolite biological aerated filter filling and preparation method thereof
  • Low-density zeolite biological aerated filter filling and preparation method thereof
  • Low-density zeolite biological aerated filter filling and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] In this embodiment, the low-density zeolite biological aerated filter filler is composed of zeolite ore 750g, No. 425 cement 250g, the diameter of foamed plastic particles is 2-4mm, and the volume of zeolite ore and cement is combined with foaming. The volume ratio of the plastic particles is 2:1.

[0028] The preparation method of the low-density zeolite biological aerated filter filler in this embodiment is as follows:

[0029] a. Crush the zeolite ore to obtain 40-100 mesh zeolite powder, add the zeolite powder and No. 425 cement to the mixer and mix for 30 minutes to mix the two raw materials uniformly to obtain a mixture;

[0030] b. Sprinkle foamed plastic particles into the ball-forming plate, spray water evenly on the surface of the foamed plastic particles to wet the surface, and then sprinkle the mixture obtained in step a at a constant speed and spray water on the surface of the particles. The mass ratio of the amount to the mixture is 1:2-2:1, and the ball-forming...

Embodiment 2

[0033] In this embodiment, the low-density zeolite biological aerated filter packing material is composed of 1200g of zeolite ore, 200g of cement 425, and foamed plastic particles with a diameter of 2-4mm. The volume of the zeolite ore and the cement The volume ratio of the foam particles is 1:2.

[0034] The preparation method of the low-density zeolite biological aerated filter filler in this embodiment is as follows:

[0035] a. Crush the zeolite ore to obtain 40-100 mesh zeolite powder, add the zeolite powder and No. 425 cement to the mixer and mix for 30 minutes to mix the two raw materials uniformly to obtain a mixture;

[0036] b. Sprinkle foamed plastic particles into the ball-forming plate, spray water evenly on the surface of the foamed plastic particles to wet the surface, and then sprinkle the mixture obtained in step a at a constant speed and spray water on the surface of the particles. The mass ratio of the amount to the mixture is 1:2-2:1, and the ball-forming disc ro...

Embodiment 3

[0039] In this embodiment, the low-density zeolite biological aerated filter filler is composed of: 800g of zeolite ore, 200g of cement 425, foamed plastic particles, diameter of 2-4mm, and the volume of zeolite ore and cement. The volume ratio of the foam particles is 1:1.

[0040] The preparation method of the low-density zeolite biological aerated filter filler in this embodiment is as follows:

[0041] a. Crush the zeolite ore to obtain 40-100 mesh zeolite powder, add the zeolite powder and No. 425 cement to the mixer and mix for 30 minutes to mix the two raw materials uniformly to obtain a mixture;

[0042] b. Sprinkle foamed plastic particles into the ball-forming plate, spray water evenly on the surface of the foamed plastic particles to wet the surface, and then sprinkle the mixture obtained in step a at a constant speed and spray water on the surface of the particles. The mass ratio of the amount to the mixture is 1:2-2:1, and the ball-forming disk rotates at a constant spe...

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Abstract

The invention discloses a low-density zeolite biological aerated filter filling and a preparation method thereof. The filling is a low-density zeolite biological aerated filter filling which is prepared through adopting foamed plastics particles as inner cores and adopting natural zeolite particles as shells. The raw materials of the filling comprise zeolite ore, cement and the foamed plastics particles. The preparation method is characterized by: crushing the zeolite ore; mixing the crushed zeolite ore and the cement to obtain a mixed material; then adding the mixed material to the foamed plastics particles while spraying water to enable the mixed material to be coated on the surface of the foamed plastics particles to obtain the low-density zeolite biological aerated filter filling. Thelow-density zeolite biological aerated filter filling provided by the present invention has high porosity, and has a pore size of 0.01-0.1 mm, such that the microorganisms can deeply enter into the inner void of the filling particles, therefore, the filling has large microorganism loading and high ammonia nitrogen removing efficiency. In addition, the filling has synchronous adsorption dephosphorization effects.

Description

1. Technical Field [0001] The invention relates to a microbial carrier used in water treatment and a preparation method thereof, in particular to a low-density zeolite biological aerated filter filler and a preparation method thereof. 2. Background technology [0002] my country is one of the 13 countries with insufficient water resources. Per capita freshwater resources are less than 1 / 4 of the world average, and they are unevenly distributed in time and space. Among more than 600 cities in China, 333 cities have varying degrees of shortage. Water, 108 cities suffer from severe water shortages. At the same time, my country is also one of the countries with the most serious waste of water resources, with a sewage reuse rate of less than 5%. Therefore, the development of non-traditional water sources such as reclaimed water and the realization of sewage resources are of important strategic significance for ensuring safe urban water supply. However, economy and safety are the prer...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/10C02F3/02
CPCY02W10/10
Inventor 谢晶晶陈天虎谢巧勤束松林彭书传
Owner HEFEI UNIV OF TECH
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