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**Sludge as Organic Fertilizer through Fermentation**
When sludge is treated as a renewable resource, it not only helps solve the waste problem but also prevents secondary pollution caused by the improper handling of sludge that may contain heavy metals, pathogens, and toxic organic compounds. Common methods for sludge treatment include landfilling, composting, energy generation, and heating. Landfilling involves burying non-recyclable materials deep underground, allowing natural processes to break them down over time. Composting, on the other hand, uses the organic content in sludge to create valuable agricultural fertilizers. Meanwhile, thermal treatment involves pyrolysis or fermentation to generate heat and biogas. Among all these options, composting is often the most cost-effective and sustainable approach.
Using a starter like "Goldfish Fertilizer" makes the process simple and efficient. All you need is to mix the sludge with some organic material such as crushed straw or sawdust, add a small amount of the starter, and stir thoroughly. Within 7 to 10 days, the fermentation process completes, resulting in a usable and marketable compost.
This method effectively reduces odor, decreases moisture, eliminates harmful pathogens and parasites, and turns sludge into high-quality compost. The final product can be dried, ground, and blended with chemical fertilizers and beneficial microorganisms to produce organic compound fertilizers or bio-organic fertilizers, offering an eco-friendly alternative to traditional chemical-based products.
By turning sludge into a useful resource, we not only manage waste more efficiently but also contribute to sustainable agriculture and environmental protection.
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