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Sludge carbon fertilizer and production method thereof

A production method, sludge charcoal technology, applied in the direction of bio-organic part treatment, waste fuel, etc., can solve the problems of ineffective recycling of resources, serious environmental pollution, etc., and achieve the effect of enhancing lodging resistance, prolonging fertilizer efficiency, and fixing fertilizer

Active Publication Date: 2011-09-07
上海智迭科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The invention provides a sludge charcoal fertilizer and a production method thereof, which can solve the problem that the existing sludge disposal method causes serious environmental pollution and the resources contained in the sludge cannot be effectively recycled and utilized. The sludge charcoal fertilizer provided by the invention Can be used as soil conditioner and fertilizer slow-release synergist

Method used

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  • Sludge carbon fertilizer and production method thereof
  • Sludge carbon fertilizer and production method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0051] Take 10kg of sludge (moisture content 80%) and 5kg of sawdust from a domestic sewage treatment plant. After mixing and stirring, spread it on a sun-drying field and dry it under direct sunlight until the moisture content is 30%. Large coagulums are broken down to less than 20mm in diameter. Heat the experimental muffle furnace (the muffle furnace is a closed high-temperature furnace for experiments, which can replace the carbonization furnace in the test) to 750°C, put the mixture into the tray, put it in the muffle furnace, and heat it for 15 minutes. Take it out after cooling down to get about 4kg of sludge charcoal fertilizer.

[0052] Experimentally measured, the final black granular solid obtained:

[0053] The diameter is 2~8mm;

[0054] The specific surface area is 195m 3 / g;

[0055] Nitrogen content: 2.21%;

[0056] Phosphorus content: 8.24%;

[0057] Potassium content: 1.97%.

Embodiment 2

[0059] Take 10 tons of sludge from a domestic sewage treatment plant (moisture content 80%), crush bamboo, branches, etc. into wood chips (bamboo chips) with a diameter of 1 to 15 mm, and take 3 tons of charcoal powder from a charcoal factory. tons (1-15mm in diameter), fully mixed, with a total weight of 15 tons; the material is transported to the KJG paddle dryer, and the material is heated by indirect heating with heat-conducting oil (the temperature of the heat-conducting oil is 160°C). Drying, and the material is fully mixed and granulated through the rolling and stirring of the blades inside the dryer. After 25 minutes, the material is dried to a moisture content of 30%, and enters the BMS sludge carbonization furnace through a closed spiral conveying pipe; the temperature of the carbonization furnace Preheat to 760°C, start to receive the material, and after 18 minutes of carbonization, it becomes black carbonization. After the charcoal is cooled to 200°C by a tubular w...

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Abstract

The invention provides a sludge carbon fertilizer and a production method thereof, solving the problem of serious environmental pollution caused by the traditional sludge treatment method and incapability of effectively recycling resources contained in sludge. The sludge carbon fertilizer comprises biomass wastes and organic sludge, wherein the mass mixing ration of the biomass wastes to the organic sludge is 1:5-1:1. The invention also provides the production method of the sludge carbon fertilizer, comprising the following steps of: mixing; dryly granulating; carbonizing; cooling; sieving; naturally cooling; and packaging to obtain the sludge carbon fertilizer. Due to the sludge carbon fertilizer produced by adopting the method, the problem of environmental pollution brought about by thetraditional sludge treatment method is solved, and the soil nutrient elements such as organic matters, nitrogen, phosphorus, potassium, and the like which are contained in the sludge can be sufficiently recycled, thus the sludge carbon fertilizer can be used as a soil conditioner and a fertilizer slow-release synergist.

Description

technical field [0001] The invention relates to a sludge charcoal fertilizer and a production method thereof. The sludge charcoal fertilizer can be used as a soil improver and a fertilizer slow-release synergist. Background technique [0002] Over the past 50 years, chemical fertilizers have been used excessively in agricultural production, and the utilization rate of applied chemical fertilizers is low, generally only 10-30%. A large amount of nitrogen, phosphorus, and potassium elements flow into rivers and lakes with water or seep into groundwater, forming a non-point source of rivers and lakes. Pollution, causing serious eutrophication, or polluting groundwater. [0003] Due to the use of chemical fertilizers, the increase of the multiple cropping index of agricultural cultivation, and the improvement of agricultural production mechanization, various unreasonable cultivations such as mechanical rolling, human and animal trampling, etc., will eventually cause soil compact...

Claims

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Application Information

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IPC IPC(8): C05F15/00
CPCY02E50/30Y02W30/40
Inventor 朱准平
Owner 上海智迭科技有限公司
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