A kind of biodegradable slow-release carbon source filler and preparation method thereof
A slow-release carbon source, biodegradation technology, applied in chemical instruments and methods, biological water/sewage treatment, water pollutants, etc., can solve the problems of unfavorable microbial adhesion, small specific surface area, single nutrition, etc., and achieve excellent physiological inertness , The effect of improving the specific surface area and good flexibility
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Embodiment 1
[0045] A biodegradable slow-release carbon source filler mainly includes an external carbon source layer, an internal carbon source layer and a connecting colloid, and the mass ratio of the external carbon source layer, the internal carbon source layer and the connecting colloid is: 3:1: 2. The external carbon source layer wraps the internal carbon source layer through the connecting colloid to form a multi-layer spherical structure; the internal specific surface area of the multi-layer structure is large, which is conducive to the attachment of microorganisms.
[0046] The external carbon source layer mainly includes: 25% biodegradable polymer (polyvinyl alcohol), 25% starch (common starch), 3% emulsifier (fatty acid polyglycerol ester), 0.8% catalyst, 6% graphite powder, 6% iron powder, and the balance is hard water;
[0047] Wherein, the preparation method of the external carbon source layer comprises the following steps:
[0048] S1: Mix the biodegradable polymer (polyv...
Embodiment 2
[0071] A biodegradable slow-release carbon source filler mainly includes an external carbon source layer, an internal carbon source layer and a connecting colloid, and the mass ratio of the external carbon source layer, the internal carbon source layer and the connecting colloid is: 4:1: 2.5. The external carbon source layer wraps the internal carbon source layer through the connecting colloid to form a multi-layer spherical structure; the internal specific surface area of the multi-layer structure is large, which is conducive to the attachment of microorganisms.
[0072] The external carbon source layer mainly includes: 28% biodegradable polymer (polyvinyl alcohol), 28% starch (expanded glutinous rice flour), 4% emulsifier (sorbitol glyceride), 1.0% catalyst, 7% graphite powder, 7% iron powder, and the balance is hard water;
[0073] Wherein, the preparation method of the external carbon source layer comprises the following steps:
[0074] S1: Mix the biodegradable polymer...
Embodiment 3
[0097] A biodegradable slow-release carbon source filler mainly includes an external carbon source layer, an internal carbon source layer and a connecting colloid, and the mass ratio of the external carbon source layer, the internal carbon source layer and the connecting colloid is: 5:1: 3. The external carbon source layer wraps the internal carbon source layer through the connecting colloid to form a multi-layer spherical structure; the internal specific surface area of the multi-layer structure is large, which is conducive to the attachment of microorganisms.
[0098] The outer carbon source layer mainly includes: 30% biodegradable polymer (polycaprolactone), 30% starch (acetate starch), 5% emulsifier (sorbitol glyceride), 1.2% catalyst , 8% graphite powder, 8% iron powder, and the balance is hard water;
[0099] Wherein, the preparation method of the external carbon source layer comprises the following steps:
[0100] S1: Mix the biodegradable polymer (polycaprolactone) ...
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