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Sponge iron-AT (Attapulgite)-PVF (Polyvinyl Fluoride) composite filler and application thereof on water treatment

A -AT-PVF, composite filler technology, applied in sponge iron-AT-PVF composite filler and its application in water treatment, can solve the problems of single effect, poor practicability and high cost, achieve biomass increase, overcome Adverse effects, effects of high biomass

Inactive Publication Date: 2011-08-24
LANZHOU JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the immobilization methods of microorganisms mainly include adsorption immobilization method, crosslinking immobilization method and embedding immobilization method. The role of microorganisms, and the common problems of high cost, single effect, and poor practicability

Method used

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  • Sponge iron-AT (Attapulgite)-PVF (Polyvinyl Fluoride) composite filler and application thereof on water treatment
  • Sponge iron-AT (Attapulgite)-PVF (Polyvinyl Fluoride) composite filler and application thereof on water treatment
  • Sponge iron-AT (Attapulgite)-PVF (Polyvinyl Fluoride) composite filler and application thereof on water treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1 Sponge iron-AT-PVF composite filler, characterized in that: the composite filler is cut into 1.5cm×1.5cm×1.5cm attapulgite composite hydrophilic polyurethane foam and a sponge with a particle size of 2-5cm Iron is evenly filled in a weight ratio of 1:4.

[0030] Among them: attapulgite composite hydrophilic polyurethane foam is composed of the following raw materials in parts by weight:

[0031] Polyether 100 toluene diisocyanate 50 polyisocyanate 3.1

[0032] Nano Attapulgite 4 Silicone Oil 0.45 Tertiary Amine 0.25

[0033] Organotin 0.14 Water 2.0 Dichloromethane (MC) 4.5

[0034] N,N dimethylformamide (DMF) 40;

[0035] The preparation method of the nano attapulgite composite hydrophilic polyurethane foam microbial immobilization carrier includes the following steps:

[0036] (1) The purified attapulgite raw soil produced by Jiangsu Xuyi Guangming Attapulgite Factory is crushed to particles with a particle size of less than 100μm with an ordinary ball mill. Take 4 pa...

Embodiment 2

[0042] Example 2 Sponge iron-AT-PVF composite filler, characterized in that: the composite filler is cut into 1.5cm×1.5cm×1.5cm attapulgite composite hydrophilic polyurethane foam and a sponge with a particle size of 2-5cm Iron is evenly filled in a weight ratio of 1:50.

[0043] Among them: attapulgite composite hydrophilic polyurethane foam is composed of the following raw materials in parts by weight:

[0044] Polyether 100 Toluene diisocyanate 45 Polyisocyanate 3.9

[0045] Nano Attapulgite 5 Silicone Oil 1.2 Tertiary Amine 0.20

[0046] Organotin 0.20 Water 2.5 MC 2.3 DMF 60;

[0047] The preparation method of the nano attapulgite composite hydrophilic polyurethane foam microbial immobilization carrier and sponge iron are the same as those in Example 1.

Embodiment 3

[0048] Example 3 Sponge iron-AT-PVF composite filler, characterized in that: the composite filler is cut into 1.5cm×1.5cm×1.5cm attapulgite composite hydrophilic polyurethane foam and a sponge with a particle size of 2-5cm Iron is evenly filled in a weight ratio of 1:27.

[0049] Among them: attapulgite composite hydrophilic polyurethane foam is composed of the following raw materials in parts by weight:

[0050] Polyether 100 toluene diisocyanate 38 polyisocyanate 3.1

[0051] Nano attapulgite 2 Silicone oil 0.85 Tertiary amine 0.14 Organotin 0.15

[0052] Water 1.0 MC 1.6 DMF 30;

[0053] The preparation method of the nano attapulgite composite hydrophilic polyurethane foam microbial immobilization carrier and sponge iron are the same as those in Example 1.

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Abstract

The invention relates to a sponge iron-AT (Aluminium Titanate)-PVF (Polyvinyl Fluoride) composite filler and application thereof on water treatment. The composite filler is formed by filling attapulgite composite hydrophilic polyurethane foam of the size of 1.5*1.5*1.5cm and sponge with the grain diameter of 2-5cm at the weight ratio of 1: (4-50). The sponge iron-AT-PVF composite filler has the characteristics of low cost, good water treatment effect, high degrading speed and high removal rate on elements N and P as well as organic matters which are difficult to be degraded in the wastewater. The TN (Total Nitrogen) and TP (Total Phosphorus) indexes in the effluent can be drastically lowered under the aerobic or anaerobic conditions when the composite filler is put into a common biochemical treating pond.

Description

Technical field [0001] The invention relates to the technical field of sewage treatment, in particular to sponge iron-AT-PVF composite filler and its application in water treatment. Background technique [0002] Water pollution, especially the pollution of N and P elements and refractory organic matter is one of the main problems facing my country's environmental protection. Wastewater biochemical treatment technology is the main technology in wastewater treatment. As an economical and effective means, it plays an extremely important role in preventing water pollution and improving water body functions. At present, sewage biochemical treatment technology is constantly updated, but the treatment of N and P elements and refractory organics generally has the problem of large investment and unsatisfactory results. Therefore, the sewage biochemical treatment effect, especially the treatment effect of N and P, is reduced. Operating cost is the main problem that needs to be solved urge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/00C02F3/10
CPCY02W10/10
Inventor 李杰王亚娥
Owner LANZHOU JIAOTONG UNIV
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