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Polyethylene bio-carrier, preparation method thereof and application of polyethylene bio-carrier to sewage treatment

A bio-filler and polyethylene technology, which is applied in biological water/sewage treatment, sustainable biological treatment, water/sludge/sewage treatment, etc., can solve the problem of film-hanging speed, film-hanging amount and tightness between film and filler , poor hydrophilic performance and bio-affinity, high polyethylene content, etc., to achieve the effect of shortened process start-up period, low price and high mechanical strength

Active Publication Date: 2019-02-01
南京源创境环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the common polyethylene biofillers on the market have high filler cost due to high polyethylene content, poor hydrophilicity and bio-affinity, resulting in poor performance in terms of film-hanging speed, film-hanging amount, and tightness between film and filler. It has a shortpart.

Method used

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  • Polyethylene bio-carrier, preparation method thereof and application of polyethylene bio-carrier to sewage treatment
  • Polyethylene bio-carrier, preparation method thereof and application of polyethylene bio-carrier to sewage treatment
  • Polyethylene bio-carrier, preparation method thereof and application of polyethylene bio-carrier to sewage treatment

Examples

Experimental program
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Effect test

Embodiment 1

[0032] A preparation method of polyethylene biofiller, comprising the steps of:

[0033] (1) Wash the sugarcane residue in water, soak it in alcohol, rinse it with alcohol, dry it at 105-180°C, and crush it to 80-150 mesh;

[0034] (2) Mix the sugarcane residue obtained in the step (1) with linear low-density polyethylene and 200-325 mesh activated carbon powder, and then die-cast.

[0035] Wherein, the mass ratio of low-density linear polyethylene, sugarcane residue and powdered activated carbon is 70:20:10.

[0036] Such as Figures 1 to 2 As shown, the prepared filler is 14 mm high and 30 mm in diameter, and its main frame includes a polygonal ring 1 (with a side length of 3 mm) arranged in the center and a first circular ring 2 (diameter 15 mm) and a second circular ring 2 (diameter 15 mm) arranged on the periphery of the polygonal ring in turn. Two circular rings 3, each longitudinal edge 11 of the polygonal ring 1 is fixed with a first radial rib 12, and the first radi...

Embodiment 2

[0039] The difference from Example 1 is that the low-density linear polyethylene: sugarcane residue: powdered activated carbon mass ratio is 60: 30: 10, the filler is 5 mm high, the diameter is 10 mm, and the side length of the hexagonal ring is 0.8 mm. The diameter of the ring 2 is 5 mm, the diameter of the groove 4 is 0.5 mm, the depth is 0.3 mm, and the distance between adjacent grooves is 0.8 mm.

Embodiment 3

[0041] The difference from Example 1 is that the low-density linear polyethylene: sugarcane residue: powdered activated carbon mass ratio is 65: 20: 15, the filler is 8 mm high, and the diameter is 20 mm. The side length of the hexagonal ring is 2 mm. The first circle The diameter of the ring 2 is 10 mm, the diameter of the groove 4 is 1 mm, the depth is 0.4 mm, and the distance between adjacent grooves is 2 mm.

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Abstract

The invention discloses a polyethylene bio-carrier and an application of the polyethylene bio-carrier to sewage treatment. Linear low-density polyethylene serves as a main frame material, the polyethylene, sugarcane residue and activated carbon are mixed according to proportion, and die-casting molding is implemented. The sugarcane residue is flushed by ethyl alcohol, dried and crushed. The activated carbon is selected from common powdery activated carbon in the market. The cost of the bio-carrier is greatly reduced, and the bio-carrier is applied to aerobiotic and anaerobic biological treatment processes. The bio-carrier is high in bio-film culturing speed, process stability is enhanced, starting time of a process is obviously shortened, sludge amount in drained water is obviously reduced, and the drained water is close to clear, so that later drainage treatment is facilitated.

Description

technical field [0001] The invention relates to a polyethylene biological filler, a preparation method thereof and an application in sewage treatment, belonging to the field of sewage treatment. Background technique [0002] The biofilm moving bed process is a new and efficient biological treatment process that integrates the advantages of the traditional activated sludge process and the biological contact oxidation process. The biological filler moves regularly in the biochemical tank by means of aeration and stirring. When the sewage continuously passes through the reactor equipped with the biological filler, the microorganisms will attach to the biological filler to form a biofilm. Based on the biofilm, the microorganisms will reproduce in large numbers. , Heterotrophic and autotrophic microorganisms use nutrients in water to metabolize, thereby purifying sewage. The biological filler is the core of the biofilm moving bed process, and its performance directly affects the...

Claims

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Application Information

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IPC IPC(8): C02F3/10C02F3/12C02F3/28
CPCC02F3/105C02F3/1268C02F3/2806Y02W10/10
Inventor 应汉杰朱杰陈勇刘桂文郭亭赵南刘庆国邹亚男
Owner 南京源创境环保科技有限公司
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