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5168results about "Animal corpse fertilisers" patented technology

Novel method for innocent treatment and utilization of dead livestock and poultry

The invention discloses a novel method of the harmless treatment and utilization of livestock and poultry which died of disease according to the steps as follows: firstly, various kinds of the animal bodies of the livestock and the poultry which died of disease are collected; secondly, the animal bodies are crushed; thirdly, the crushed animal bodies are sterilized under high temperature and highpressure and separated for filtering, the material of oil and fat flows into a cooling pool, and the material of hair and bone is dried; fourthly, the material of hair and bone after drying is carbonized; fifthly, the material of oil and fat after cooling is added with catalyst, high-efficiency compound microorganism, trash, organic wastewater and sludge; sixthly, the mixed organic material is put into an anaerobic tower to be fermented, and then biogas, biogas slurry and biogas slag are processed for three-phase separation; seventhly, the biogas is used for burning and generating electricity; eighthly, the biogas slurry inside a fertilizer storing pool is used as farmland fertilizer; ninthly, the biogas slag is added with the high-efficiency compound microorganism and the catalyst for secondary ferment; tenthly, the material after the secondary ferment is made into agricultural high-efficiency organic fertilizer. The invention solves the problem of the environmental pollution caused by the livestock and poultry which died of disease and change the waste livestock and poultry which died of disease into valuables.
Owner:浙江威尔斯生物能源开发有限公司

Organic recycling with metal addition

The invention is directed to methods for producing a granular nitrogen fertilizer from an organic material comprising adding a metallic salt to said organic material to form a slurry. Preferably the organic material comprises dewatered biosolids and contains water from a scrubber. Metallic salts that can be used comprise a salt of iron, zinc, or a mixture thereof. Preferred iron salts comprises ferric sulfate or ferric oxide, and preferred zinc salts comprises zinc sulfate or zinc oxide. Preferably, the metallic salt is mixed with an acid such as sulfuric acid to form an acidified metal salt. Slurry pH ranges from approximately 2-2.5. The acidified metal salt is added to the organic material in sufficient quantity to lower viscosity of the slurry such that the resulting fluid does not hinder fluid flow during operation. When the metallic salt comprises acidified ferric sulfate or ferrous sulfate, sufficient iron can be present to produce a fertilizer product with 0.1 weight percent to 10 weight percent iron sulfate calculated on a dry weight basis. The invention is also directed to fertilizer products made by the methods of the invention. Preferred products are granules and the metallic salt increases product hardness. Fertilizer granules preferably contain metal that is bioavailable to a plant when used as a fertilizer. Solubility of the metal of the product in water is enhanced, and the product is low staining.
Owner:UNIFIED ENVIRONMENTAL SERVICES GROUP +1
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