Plastic-skeleton bentonite bentonite composite adsorbent and its production

Abstract

The invention is concerned with the plastic framework-style bentonite composite sorbent and the preparation method. The crude bentonite or the character-changed bentonite is the main material for the composite sorbent, the thermoplastic macromolecule polymer is as the framework connecting material and also add the assistant selective material, the blowing hole-make material by the working procedure such as mixture, model melt extrude, dryness and cut grain. The preparation method is dry preparation method with simple process and without secondary pollution, the product can adjust the powder intensity, the size of the hole, the porosity, the density and the adsorbing selectivity according to the change of the selected group and dosage. The sorbent is not easy pulverization in water which can use for waste water dispose with heavy metal ion and organic infectant.

Description

1. Technical field

[0001] The invention relates to an adsorbent suitable for water and waste water treatment, in particular to a plastic skeleton type bentonite composite adsorbent. 2. Background technology

[0002] Bentonite is a clay rock mainly composed of montmorillonite. Its mineral composition and structure make it exhibit many excellent special properties, so it is called "universal clay". It has a wide range of applications. In recent years, with the continuous strengthening of environmental protection, in order to reduce the cost of environmental governance, the world attaches great importance to the development and application of bentonite as an adsorption material for water and wastewater treatment. The basis of bentonite as an adsorption material for water and wastewater treatment is its excellent adsorption and cation exchange properties, and it has a wide range of sources and is cheap, and it is expected to replace expensive activated carbon...