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Ecological floating bed for oil-polluted water remediation

A technology of water body restoration and ecological floating bed, which is applied in the fields of water pollutants, biological water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the loss of catalytic materials, poor recyclability and reusability of catalysts, and limited photocatalysis Wide application of materials and other issues to achieve strong adsorption performance, good visible light activity, enhanced adsorption and degradation performance and purification effect

Active Publication Date: 2016-02-03
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

but since g-C 3 N 4 The based materials are highly dispersed in the solution, and the recyclability and reusability of the catalyst are poor. Traditional separation techniques lead to a large loss of catalytic materials, thus limiting the wide application of such photocatalytic materials in practice.

Method used

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  • Ecological floating bed for oil-polluted water remediation
  • Ecological floating bed for oil-polluted water remediation
  • Ecological floating bed for oil-polluted water remediation

Examples

Experimental program
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Effect test

Embodiment example 1

[0039] An ecological floating bed for remediation of oil-polluted water prepared based on waste materials, comprising: a main frame 1, a PVC casing joint 2, a non-woven fabric 3, a bottom filling material 4, an upper filling material 5, and the Agricultural plants6.

[0040] The main frame is made of 6 casing supports with a length of 0.9m, 2 casing supports with a length of 0.3m, 4 DN15 right-angle two-way joints, and 8 DN15 positive tee joints. The casing supports are made of waste polyurethane foam Plastic loaded with TiO infiltrated with a certain amount of N element 2 The material is prefabricated. refer to Figure 1 to Figure 3 Assembled, the interface is sealed with a small amount of silicone.

[0041] The production process of the main frame is as follows: take 300g of waste polyurethane foam, use a small molecule alkyl glycol as an alcoholysis agent, and react for 2 hours at 200°C to obtain a polyether polyol; 20mL of tetrabutyl titanate Add the ester to 10mL of a...

Embodiment example 2

[0046] The production process of this case refers to the implementation case 1, but there are the following differences: the main frame is assembled from six 0.3m and two 0.1m casing brackets, and the production process of the casing brackets has the following differences: Take 100g of waste polyurethane foam plastics to obtain polyether polyols; add 6 mL of tetrabutyl titanate to 3 mL of absolute ethanol under vigorous stirring, stir for 30 min, then add dropwise 1.5 mL of concentrated nitric acid, 2 mL of twice distilled water and 25 mL of absolute ethanol Mix the solution to make TiO 2 dry gel. urea and TiO 2 Xerogels were mixed and ground at different mass ratios of 3:1 to prepare N-doped TiO 2 Nanoparticles. 8 g of N-doped TiO 2 Particles, mixed with 80g of diphenylmethylpropane diisocyanate, heated in a water bath at 40°C to form a liquid; mixed 15g of dichloromethane with 80g of polyether polyol, heated in a 60°C water bath and continuously stirred to form a liquid;...

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Abstract

The invention discloses an ecological floating bed for oil-polluted water remediation. The main frame of the ecological floating bed comprises multiple assembled casing supports. Joints of the casing supports of the main frame are connected to matched PVC casing pipe joints and the joint openings are sealed by silica gel. A modified TiO2 photocatalytic material is carried by waste polyurethane foamed plastic recovered and recycled by an alcoholysis method so that the casing supports are prepared. The bottom of the main frame is wrapped by a non-woven fabric. Wrapped parts of the non-woven fabric and the main frame are tightened by a nylon rope. In each unit, a certain amount of a bottom filler layer and an upper filler layer are uniformly laid. Crops are planted in the upper filler layer. The paddy rice sprout on a floating bed can fully absorb redundant nitrogen and phosphor in water so that plant growth is promoted, the plant roots can promote floating bed bottom microbe growth so that floating bed water purification effects are improved, and the modified fly ash and the non-woven fabric have strong adsorptivity. The floating bed has three technology advantages and improves oil pollutant adsorption degradability and cleaning effects.

Description

technical field [0001] The invention relates to an ecological floating bed used for repairing oil-polluted water bodies, and belongs to the technical field of photocatalytic composite materials. Background technique [0002] Semiconductor material-based photocatalysts, as a green economic technology, have attracted extensive attention in the field of environmental governance and restoration for their potential application in the degradation of organic pollutants. However, the large-scale use of semiconductor photocatalytic materials is often limited by two aspects. Firstly, the wide band gap inhibits the absorption and utilization of sunlight by photocatalysts; secondly, the photocatalysts after degrading pollutants are dispersed in the treated solution, which is difficult to separate and recycle. Therefore, the high efficiency, stability, cost, and light use efficiency of materials have become important criteria for selecting semiconductor photocatalytic materials. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32C08G18/76C08G18/48C08K9/04C08K3/22C08G101/00C02F101/30
Inventor 李轶李杰张文龙叶全梁
Owner HOHAI UNIV
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