阅读说明：本技术 一种含蒙脱石的废水过滤材料 (Montmorillonite-containing wastewater filtering material ) 是由 曾晖 李金辉 李国滨 林锐 于 2019-10-25 设计创作，主要内容包括：本发明公开了一种含蒙脱石的废水过滤材料,由以下重量份数的各组分组成：蒙脱石35～50份,石英砂15～25份,脱脂棉8～12份,泡沫陶瓷10～18份,活性炭10～20份；所述各组分按下列顺序依次填装：脱脂棉置于最底层,石英砂置于倒数第二层,蒙脱石置于倒数第三层,泡沫陶瓷和活性炭按上述重量份数比混匀后置于最上层；废水从底层通入,仅通过依次过滤操作就可以除去重金属离子、有机物等污染源；同时所述废水过滤材料具有吸附过滤效果好、材料寿命长、成本低等优点,具有较大的应用前景。(The invention discloses a montmorillonite-containing wastewater filtering material which is composed of the following components in parts by weight: 35-50 parts of montmorillonite, 15-25 parts of quartz sand, 8-12 parts of absorbent cotton, 10-18 parts of foamed ceramic and 10-20 parts of activated carbon; the components are sequentially filled according to the following sequence: the absorbent cotton is arranged at the bottommost layer, the quartz sand is arranged at the penultimate layer, the montmorillonite is arranged at the penultimate layer, and the foamed ceramic and the activated carbon are uniformly mixed according to the weight parts and then are arranged at the topmost layer; the wastewater is introduced from the bottom layer, and pollution sources such as heavy metal ions, organic matters and the like can be removed only by sequential filtering operation; meanwhile, the wastewater filtering material has the advantages of good adsorption and filtration effects, long material service life, low cost and the like, and has a great application prospect.)

1. The montmorillonite-containing wastewater filtering material is characterized by comprising the following components in parts by weight: 35-50 parts of montmorillonite, 15-25 parts of quartz sand, 8-12 parts of absorbent cotton, 10-18 parts of foamed ceramic and 10-20 parts of activated carbon; the components are sequentially filled according to the following sequence: the absorbent cotton is arranged at the bottommost layer, the quartz sand is arranged at the penultimate layer, the montmorillonite is arranged at the penultimate layer, and the foamed ceramic and the activated carbon are uniformly mixed according to the weight parts and then are arranged at the topmost layer.

2. The montmorillonite-containing wastewater filter material as claimed in claim 1, which is composed of the following components in parts by weight: 50 parts of quartz sand, 15 parts of absorbent cotton, 10 parts of foamed ceramic and 10 parts of activated carbon.

3. The montmorillonite-containing wastewater filtration material according to claim 1 or 2, wherein the montmorillonite is a sodium-based modified montmorillonite.

4. The montmorillonite-containing wastewater filtering material as claimed in claim 1 or 2, wherein the quartz sand is hydrophilic quartz sand, and the specific surface area is 200-300 m²/g。

5. The montmorillonite-containing wastewater filtration material of claim 1 or 2, wherein the absorbent cotton is medical absorbent cotton.

6. The montmorillonite-containing wastewater filter material as claimed in claim 1 or 2, wherein the ceramic foam is a zirconia ceramic foam, and the pore density is 8 to 60 ppi.

7. The montmorillonite-containing wastewater filter material as claimed in claim 1 or 2, wherein the activated carbon is coal-based activated carbon, the particle size is less than 200 meshes, and the iron content is less than 0.1%.

8. Use of the montmorillonite-containing wastewater filtration material of any one of claims 1 to 7 in heavy metal wastewater treatment.

Technical Field

The invention relates to the technical field of wastewater filtering materials, and particularly relates to a wastewater filtering material containing montmorillonite.

Background

With the growth of population and the development of industrialization, the demand of water resources of people is exponentially increased, and meanwhile, the generated wastewater is also rapidly increased. Water resources have become one of the important issues limiting human development in the 21 st century. The development of sewage treatment and the recycling of water resources become important ways for solving the problem. At present, the wastewater generated by people is mainly divided into domestic wastewater and industrial water diversion, and pollutants mainly comprise organic pollutants, heavy metal ions, solid particle pollutants and the like. Filtration is an important step in the process flow for treating these waste waters. The filtering materials currently used have low filtering efficiency and are difficult to face waste water containing various pollutants, and thus it is required to develop a filtering material having various functions.

Patent CN108328671A discloses a waste water filtering material containing zeolite powder, which can filter out part of chemical components in industrial waste water and change the water quality of industrial waste water, but has low removal efficiency and can not remove heavy metal ions in waste water. Therefore, it is necessary to develop a new filtering material for sewage to solve the problems faced by the current filtering materials.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide a wastewater filtering material containing montmorillonite.

The second purpose of the invention is to provide the application of the montmorillonite-containing wastewater filtering material.

The above object of the present invention is achieved by the following technical solutions:

a montmorillonite-containing wastewater filtering material is composed of the following components in parts by weight: 35-50 parts of montmorillonite, 15-25 parts of quartz sand, 8-12 parts of absorbent cotton, 10-18 parts of foamed ceramic and 10-20 parts of activated carbon; the materials of the components are filled in sequence as follows: the absorbent cotton is arranged at the bottommost layer, the quartz sand is arranged at the penultimate layer, the montmorillonite is arranged at the penultimate layer, and the foamed ceramic and the activated carbon are uniformly mixed according to the weight parts and then are arranged at the topmost layer.

The absorbent cotton is a screening filtering material and can be used for blocking solid impurity suspended matters; montmorillonite is also known as montmorillonite, and is a phyllosilicate of monoclinic aluminum crystal system; because different filtering components have different adsorption efficiencies on different substances, the invention discovers that a certain weight part of montmorillonite, quartz sand, foamed ceramic and active carbon are matched with each other and are filled according to the sequence, so that pollution sources such as heavy metal ions and organic matters can be effectively adsorbed only through sequential filtering operation, and the invention has the advantages of good adsorption and filtration effects, long material life, low cost and the like.

Preferably, the montmorillonite-containing wastewater filtering material consists of the following components in parts by weight: 50 parts of quartz sand, 15 parts of absorbent cotton, 10 parts of foamed ceramic and 10 parts of activated carbon.

Preferably, the montmorillonite is a sodium-based modified montmorillonite.

Preferably, the quartz sand is hydrophilic quartz sand, and the specific surface area is 200-300 m²/g。

Preferably, the absorbent cotton is medical absorbent cotton.

Preferably, the foamed ceramic is zirconia foamed ceramic, and the pore density is 8-60 ppi.

Preferably, the activated carbon is coal activated carbon, the granularity is less than 200 meshes, and the iron content is less than 0.1%.

The invention also requests to protect the application of the montmorillonite-containing wastewater filtering material in wastewater treatment, and specifically, sewage is introduced from the bottom layer of the wastewater material and flows out after sequentially passing through a degreasing cotton layer, a quartz sand layer, a montmorillonite layer, a foamed ceramic layer and an activated carbon layer.

Compared with the prior art, the invention has the following beneficial effects:

the invention provides a montmorillonite-containing wastewater filtering material which can effectively adsorb pollutants such as heavy metal ions, organic matters and the like in wastewater and can treat Cu²⁺、Pb²⁺And Cd²⁺The removal rate of ions is over 96 percent, and the removal rate of COD is over 95 percent. Moreover, the waste water filtering material of the invention has long service life and low cost,the method can be repeatedly recycled by more than 50 percent, basically keeps stable removal rate of heavy metal ions and COD, and has wide application prospect.

Detailed Description

The present invention is further illustrated by the following specific examples, which are not intended to limit the invention in any way. Reagents, methods and apparatus used in the present invention are conventional in the art unless otherwise indicated.

Unless otherwise indicated, reagents and materials used in the following examples are commercially available.

The smectites described in the following examples were all sodium-based modified smectites; the quartz sand is hydrophilic quartz sand, and the specific surface area is 200-300 m²(ii)/g; the absorbent cotton is medical absorbent cotton; the foamed ceramic is zirconia foamed ceramic, and the pore density is 8-60 ppi; the active carbon is coal-based active carbon, the granularity is less than 200 meshes, and the iron content is less than 0.1 percent.