6 kinds of raw materials are banned for the production of organic fertilizer

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6 kinds of raw materials are banned for the production of organic fertilizer

The new version of the organic fertilizer NY/T525-2021 industry standard clearly states that the raw materials for producing organic fertilizers should follow the basic principles of "safe, hygienic, stable, and effective". The raw materials are classified and managed according to the catalog, which is divided into applicable, evaluation, and prohibited categories.

There are 4 kinds of categories as below: plantation waste, breeding waste, processing waste, and natural raw materials.

Planting wastes: straws of cereals, wheat and tubers; straws of legumes; straws of oil crops; straws of horticulture and other crops, forest and grass wastes.

Farming industry waste: livestock and poultry manure and livestock and poultry pens (plants), waste feed.

Processing wastes: by-products in the planting process such as bran, rice husk, rapeseed cake, soybean cake, peanut cake, sesame cake, oil sunflower cake, cottonseed cake, tea seed cake, etc.

Natural raw materials: peat, turf, lignite, etc.

Banned Raw Materials

It is forbidden to use fly ash, steel slag, sludge, household garbage (except for classified and aged kitchen waste), materials containing invasive alien species and materials prohibited by laws and regulations, and other prohibited materials with potential safety hazards.

Evalution Raw Materials

1. Plant-derived traditional Chinese medicine residues need to be tested for heavy metals, antibiotics and the content of organic extractants used, and the organic extractant description and related test reports of supporting materials are required;

2. Food waste (classified and aged), it is necessary to test the indicators of salt, oil and protein metabolites (ammonia), aflatoxin, seed germination index, etc., and the supporting materials need to have treatment process description and test report, treatment The process is mainly desalination, deoiling, solid-liquid separation, etc.;

3. The remaining bone meal after bone glue extraction needs to be tested for indicators such as the variety and content of the chemical extractant, and the supporting materials need to have the chemical extractant description and test report;

4. Earthworm feces need to be tested for heavy metal content, etc., and supporting materials are required to have a description of aquaculture raw materials and a test report;

5. Food and beverage processing organic waste (waste, soy sauce, vinegar, MSG residue, sauce residue, yeast residue, potato residue, corn residue, sugar residue, fruit residue, edible fungus residue, etc.) need to be tested for salt and heavy metals For content indicators, supporting materials need to be provided with production process descriptions and test reports. The production process mainly includes descriptions of the types and content of chemical additives;

6. Furfural slag needs to detect persistent organic pollutants indicators and provide related test reports;

7. Aquaculture wastes (fish miscellaneous, razor clams, fish, shell miscellaneous, seaweed, sea pine, kelp, clam skin, seaweed, sponge, grass, moss, etc.) need to be tested for salt and heavy metal content indicators. The supporting materials provided are related test reports and production process instructions.

8. Biogas residue/liquid (limited to planting industry, breeding industry, food and beverage processing industry) all need to test salt and heavy metal content indicators, and the supporting materials provided are related test reports and production process instructions.