KR20040041122A - Soil fertilization agent manufacturing by slacking utilizing organic waste matter - Google Patents

Abstract

PURPOSE: A method for producing a soil conditioner is provided, by which organic wastes can be treated in a short period of time without generating bad smell, leachate, dust and air pollutant, thereby providing a composite soil conditioner containing slaked lime with high purity. CONSTITUTION: The method for producing a soil conditioner comprises: charging a high pressure and temperature reactor with a mixture of burnt lime and various organic wastes such as animal excrements, sludge from a purifying tank, sewage or wastewater treatment system, food leftovers, animal and plant residues and the like; stirring the mixture; and slacking the resulted mixture in the closed reactor under the condition of high pressure and temperature in a short period of time for stabilization.

Description

Soil fertilization agent manufacturing by slacking utilizing organic waste matter

Conventional treatment methods for high-functional organic wastes are treated by composting, basic extinguishing, incineration, drying, carbonization, and liquid quenching.

Incineration, drying, and carbonization methods use external heat sources to reduce the thermal efficiency due to the large amount of water in the process, and incomplete combustion causes harmful substances such as dust, water vapor, odors, and dioxin. It is pointed out that the processing cost and the operating cost are high.

Composting, basic extinguishing, liquefaction, and treatment methods take a long period of time and are difficult to process depending on the external temperature, or secondary environmental pollution occurs due to odors, leachate, harmful insects, and large plant area during treatment. There is this.

There is a device that treats some high-function organic wastes by stirring with quicklime. The organic waste reacted with the quicklime is mixed with other auxiliary materials and heated and dried to produce soil modifiers. There is a problem that a large amount of dust is discharged by blowing the powder dried by the hot air supplied. In addition, it is pointed out that the unburned powder and harmful substances generated in the burner are mixed with the soil improving material to degrade the quality and lower the purity.

In order to solve the above problems, the present invention mixes organic wastes and quicklime with high water content and puts them into a reaction tank that can withstand high temperature and high pressure, and then digests them by stirring to prevent odor, leachate, dust, and air pollution. By treating organic wastes in a short time, the final product is characterized by a technology that produces a high-purity lime-containing composite soil improver without mixing contaminants.

1 is a process diagram of the present invention

The present invention contains a large amount of water, easily rotted and leachate and bad smell, difficult to treat streams, groundwater, pollution and pathogens, such as livestock manure, septic tank sludge, food waste, sewage sludge, wastewater treatment sludges, animal and plant residues, leather factories When various organic wastes such as waste (saving foil) are mixed with quicklime and put into a reaction tank capable of withstanding high pressure and high temperature and stirred, they are quickly extinguished at high temperature and high pressure in a sealed reactor without generating secondary environmental pollutants ((消 和; Slacking) Stabilization is a method of manufacturing composite soil improvement material by stabilizing.

The water content of the organic wastes put into the reactor is controlled to 80 ~ 90%, and the waste water with low moisture content is mixed with various industrial waste waters such as livestock waste water with a lot of water. The organic material is digested to 150 ~ 200'C by rapid heat generation, and the pressure inside the reactor is rapidly extinguished and stabilized in the 3 ~ 4 kg / m2 high pressure reactor.

Moisture and quicklime of organic waste are mixed with calcium hydroxide by stirring and mixing in the reaction tank, generating 15,2kcal of heat per kg, evaporating organic matter to evaporate moisture, and harmful hazards such as pathogenic bacteria, pests, and weed seeds contained in organic waste. It kills the substance and neutralizes the odor. It is stabilized physically and chemically.

CaO + H2O = Ca (OH) 2 + 15,2 kcal / kg

Thermometer and pressure gauge attached to the reactor automatically measure the internal digestion status and automatically control the internal temperature within the range of 150 ~ 200 “pressure 3 ~ 4kg / m2 during the reaction stabilization process. Since ammonium chloride methane gas is extracted through a condenser to collect condensed liquid and thus air contaminants are not discharged, the collected liquid is used as a liquid fertilizer or odor removing material. Is as follows.

First process; Receipt of raw materials

Organic wastes are collected in tank lorry or amrol car cargo car and put into the warehouse or tank. Quicklime is transported in bulk vehicles or tonnes of wheat and stored in quicklime storage tanks or silos. If the water content of organic waste to be treated is less than 80%, separate waste water tank or supplementary water tank for water replenishment.

Second process; Mixed reactor input

The moisture content of the organic waste to be stabilized is 80 ~ 90%, and the mixture is controlled by the screw conveyor or pipe line.

Third process; Stirring Digestion Stabilization

After the raw material is added to the reactor, the inlet is sealed with a hatch operated by the cylinder, and the driving motor of the reactor is automatically operated to rotate the spiral two-way stirring blades mounted inside the reactor, and the raw materials are evenly mixed and mixed. When the high temperature of ~ 200 “C is generated and water and gas are filled inside the reactor, the internal pressure is 3 ~ 4kg / m2 and the reaction state is indicated on the thermometer and pressure gauge attached to the outside of the reactor. Operation is automated by the release of gas and water vapor.

Fourth process; Liquefaction

Gas and water vapor discharged to the outside through the exhaust opening and closing valve of the reactor are liquefied by a condenser and shipped as liquid fertilizer or odor removing material.

5th process; discharge and drying of digested material

Substances digested for 20 to 30 minutes in the reactor are discharged at the bottom of the reactor with the temperature of 50 ~ 60 “c in the bottom of the reactor. It is ground to the standard.

6th process; Additives added and granulated packing

Soil-improving material from the dry grinder is mixed and sorted with additives such as organic matter, then packed or manufactured into pellets, and then packed and shipped.

The composite soil improver of the present invention by the above process is produced a complex soil improver containing a trace element of lime and organic matter and fertilizer tri-element, improve acid soil to neutral soil, help to absorb nutrients of crops, inhibit heavy metal absorption and carbohydrates Promotes migration to strengthen roots and leaf stems, making them more resistant to pests, reducing the use of pesticides, contributing to the production of delicious agricultural products, promoting the activity of soil microorganisms, improving the physical properties of soils, and promoting degradation of organic matter. It has a big effect on improvement.

In addition, it promotes the effectiveness of nutrients to promote the root development and growth of crops, making it a complex soil improver suitable for environmental farming.It is produced as an effective invention for recycling high-functional organic waste, which is difficult to treat, to stabilized high-quality complex soil improver. The components of the composite soil modifier are as follows.

Composite Soil Improvement Report

Claims (1)

Livestock manure, livestock waste water, food waste, sewage sludge, septic tank sludge, leachate, animal and vegetable residues, leather factory waste (saving foil, etc.) mixed with organic lime and mixed with quicklime into a reactor that can withstand high pressure and high temperature. A method for producing complex soil reforming material or cover soil material by rapidly extinguishing and stabilizing at high temperature and high pressure in a sealed reactor without generating environmental pollution sources.