Composite biocarrier for wastewater treatment

Abstract

The invention provides a composite biocarrier for wastewater treatment. The base material is high density polyethylene, the composite functional material is slag powder, ferric oxide, coke, starch, cationic polyacrylamide or polyquaternium-10, and the auxiliary material is talcum powder. The composite biocarrier for wastewater treatment provided by the invention has density of 0.93-1.05g / cm<3>. The composite biocarrier has rough surface, short film formation time, strong impact resistance, and can prevent the drop of a microbial film attached to the biocarrier outer surface in water due to friction between carriers. The biocarrier has small contact angle with sewage, the hydrophilcity of the carrier is enhanced, and microorganisms can be attached to the carrier more easily. The biocarrier contains enhancement components of bio-enzyme, can promote the catalytic effect of bio-enzyme, has high bioactivity and fast metabolism, and can significantly enhance the decomposition ability of pollutants in water. The biocarrier contains antiultraviolet components, has a service life of over 30 years, and has no need for replacement and maintenance.

Description

technical field

[0001] The invention relates to a biological carrier for wastewater treatment, in particular to a composite biological carrier for wastewater treatment. Background technique

[0002] The biofilm moving bed method is widely used in the sewage treatment process because of its advantages of stable operation, high load impact resistance, economy and energy saving. The core technology of the biofilm moving bed method is the biofilm carrier, and the characteristics of the biofilm carrier determine the efficiency of the moving bed biofilm treatment process. However, most of the currently produced biofilm carriers are directly made of polymer resin materials such as polyethylene and polypropylene. Therefore, the produced biocarriers have poor biocompatibility, easy to fall off the biofilm on the outer surface of the carrier, and have a low removal rate of ammonia nitrogen.

[0003] High-density polyethylene has good heat resistance and cold resistance, good chemical...

Examples

Embodiment Construction

[0026] Implementation Example 1

[0027] Take 0.2kg of talc powder with a fineness above 100 mesh, 2kg of slag powder, 0.8kg of ferric oxide, 2kg of coke, 1kg of starch, and 2kg of cationic polyacrylamide, and then add 72kg of high-density polyethylene. Extrude into the barrel, heat up the extruder, the temperature of the body reaches 135°C, and the temperature of the head reaches 130°C. The composite biological carrier for waste water treatment described in the present invention can be made.

[0028] The density, contact angle, impact strength and tensile strength of the composite biological carrier for wastewater treatment prepared in this example are compared with the biological carrier directly prepared from pure high-density polyethylene, and the comparison results are as follows:

[0029]

[0030] Implementation Example 2

[0031] Take 0.2kg of talc powder with a fineness of 100 mesh or more, 2kg of slag powder, 0.8kg of ferric oxide, 2kg of coke, 1kg of starch, and...

technical field

[0001] The invention relates to a biological carrier for wastewater treatment, in particular to a composite biological carrier for wastewater treatment. Background technique

[0002] The biofilm moving bed method is widely used in the sewage treatment process because of its advantages of stable operation, high load impact resistance, economy and energy saving. The core technology of the biofilm moving bed method is the biofilm carrier, and the characteristics of the biofilm carrier determine the efficiency of the moving bed biofilm treatment process. However, most of the currently produced biofilm carriers are directly made of polymer resin materials such as polyethylene and polypropylene. Therefore, the produced biocarriers have poor biocompatibility, easy to fall off the biofilm on the outer surface of the carrier, and have a low removal rate of ammonia nitrogen.

[0003] High-density polyethylene has good heat resistance and cold resistance, good chemical...

Examples

Embodiment Construction

[0026] Implementation Example 1

[0027] Take 0.2kg of talc powder with a fineness above 100 mesh, 2kg of slag powder, 0.8kg of ferric oxide, 2kg of coke, 1kg of starch, and 2kg of cationic polyacrylamide, and then add 72kg of high-density polyethylene. Extrude into the barrel, heat up the extruder, the temperature of the body reaches 135°C, and the temperature of the head reaches 130°C. The composite biological carrier for waste water treatment described in the present invention can be made.

[0028] The density, contact angle, impact strength and tensile strength of the composite biological carrier for wastewater treatment prepared in this example are compared with the biological carrier directly prepared from pure high-density polyethylene, and the comparison results are as follows:

[0029]

[0030] Implementation Example 2

[0031] Take 0.2kg of talc powder with a fineness of 100 mesh or more, 2kg of slag powder, 0.8kg of ferric oxide, 2kg of coke, 1kg of starch, and...

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