Organic fertilizer prepared from sludge

Abstract

The organic fertilizer prepared from sludge of the present invention has the following components and weight percentages: sludge accounts for 60%-70%, organic waste accounts for 27%-35%, and biomass fermentation enzyme accounts for 3%-5%. Wherein, the sludge is pure sludge from which heavy metals and substances harmful to plant growth have been removed. The organic waste includes 5% plastic waste, 8% waste rubber, 5% fiber fabric, 12% waste paper, 15% rice bran, 14% coconut shell, 6% leaf, 10% bark, 3% flower and grass, kitchen waste 7% peel, 5% cake, 5% vinasse and 5% bagasse. It can effectively improve the soil structure, has a relatively long effective period, can reduce the cost of using fertilizers, and increase the environmental contribution rate.

Description

technical field [0001] The invention relates to an organic fertilizer prepared from sludge. Background technique [0002] For a long time, the use of fertilizers in gardens, green spaces, and afforestation processes has mainly been fermented animal manure and straw landfills. The problems are: 1. Increasing production costs; 2. Waste of agricultural production materials; 3. Short fertilizer use cycle ; 4. The contribution rate to the environment is low. [0003] In recent years, with the operation of sewage treatment plants in cities, especially some large and medium-sized sewage treatment plants, the sludge production has also increased rapidly while the sewage treatment rate in my country has continued to increase. How to treat and dispose of these sewage Mud has always been a matter of concern from all sides. Studies have shown that urban sludge contains a large amount of organic matter, nitrogen, phosphorus and other nutrients needed for plant growth. For a long time, ...

AI Technical Summary

Problems solved by technology

Studies have shown that urban sludge contains a large amount of organic matter, nitrogen, phosphorus and other nutrients needed for plant growth. For a long time, most of urban sludge has been directly applied to the planting site, but if it is directly applied to the planting site without necessary treatment Not only can it not meet the needs of plants for nutrients, but the effectiveness of its fertilizer is low. If it is applied to the field without the decomposing action of microorganisms, it will continue to decompose and generate heat, which may cause seedlings to burn. Microorganisms in sludge may compete with crops for nutrients.