KR960001497B1 - Organic fertilizer and the method thereof - Google Patents

Abstract

The organic fertilizer is produced by (a) dissociating condensed pulp and paper sludge at 100˜120deg.C by indirectly heating with steam and agitating at 6-10rpm, (b) drying it at 60˜80deg.C with heated dry air up to the moisture content of 40˜50%, (c) semidrying it at 60˜80deg.C and stirring it at 6˜10 rpm until the moisture content reaches 30˜40%, and (d) mixing 100wt% pulp and paper sludge with 10˜30wt% mixed additive of human feces, chicken droppings, pig manures, vermiculites, zeolites, rice brans and husks, and naturally fermenting the mixture.

Description

Organic Fertilizer Manufacturing Method Using Pulp, Paper Sludge and Paper Sludge

The present invention is to manufacture organic fertilizers using pulp, paper sludge and paper sludge to process organic pulp, paper sludge and paper sludge, which is inevitably generated when manufacturing various raw materials such as wood in a manufacturing plant. Method and organic fertilizer.

In general, when paper pulp, which is a vegetable fiber, is dissociated, it is manufactured through various processes such as mixing fillers and sized agents.

At this time, the pulp used as the refining material is manufactured using various raw materials such as coniferous, hardwood, etc., as well as crests and waste paper, depending on the purpose and material of the paper.

The pulp is increased by adding a large amount of sodium silicate (carlet), an inorganic acid and the like to the raw material pulp prepared from such raw materials.

Therefore, pulp, paper sludge, and paper sludge, which are indispensable when manufacturing paper, contain a large amount of inorganic materials such as various organic substances and inorganic acids added in the raw materials, but they cannot be used and are reduced in volume by compression. At the same time, it has been treated by methods such as embedding and incineration in the state of removing some moisture.

However, as described above, pulp, paper sludge, and paper sludge contain a large amount of oil and minerals, and thus can be utilized as an excellent resource, but failing to do so is intended to remove moisture by compressing pulp, paper sludge, and paper sludge. Since 70-80% of water is contained as it is, it takes a very long time for corrosion and compresses to reduce water and volume, so it is reprocessed due to the extremely difficult decay due to cohesion of sludge and sludge itself. It is difficult, and especially it has been processed by the method of embedding.

Therefore, when treating sludge and sludge compressed by means of landfill, deterioration of limited land use efficiency and odor and decay water generated when corroding after a long period of time cause a problem of re-contaminating the land. Due to the cohesion, not only the disadvantage of requiring a lot of fuel for incineration but also a high cost of the incineration facility, there was a problem of causing environmental re-contamination by smoke, dust, etc. generated during incineration.

The present invention was created to fundamentally cure such problems, and as described above, by treating pulp, paper sludge, and paper sludge containing a large amount of organic and inorganic materials, it is possible to obtain the effect of recycling of pollen and prevention of environmental pollution. The purpose is to make it.

In particular, since wood, such as paper, pulp sludge, and paper sludge, which are the main raw materials, are wood, minerals, which are rich in organic matter and must be added during paper production, contain Mgo, Cao, P, etc., which are beneficial to various soils. It has a high rate of fat, and wood, ie, wood, has the effect of composting in the soil for about 5 years, so it has the effect of high preservation, water retention, and breathability.

However, this is not only disadvantageous due to its low carbon properties (C / N), but also because paper, pulp sludge and paper sludge (hereinafter referred to as "sludge") itself are due to their moisture content and cohesion by compression. In order to solve this problem in the present invention, in order to solve this problem, in the present invention, the sludge is indirectly heated together with indirect heating and stirred by a stirring blade to dissociate the water evaporation induced in the sludge and the cohesion of the sludge itself. Takes the sludge dissociation process and induces water evaporation by stirring the dissociated sludge after a series of dissociation processes, and then it is stirred while supplying the heated dry air heated to dryness from the outside to the sludge to effectively remove the moisture contained in the sludge Induced but maintained at 60-80 ℃ to allow the sludge to be stirred at 60-80 ℃ to the water content of the sludge Take sludge drying induction process to maintain 40-50%, and semi-drying process again in the sludge drying induction process to collect semi-dried sludge with water content of 30-40%, and then powder, powder, phosphate, vermiculite Organic fertilizer is prepared by mixing with zeolite, rice bran, and lychee and taking sedimentation process to deposit on yard.

These organic fertilizers are rich in oils and minerals, which are necessarily contained in sludge, and are difficult to corrode due to high carbon ratio. However, these organic fertilizers are deposited together with flour, phosphorus, etc. In addition to the advantages such as environmental pollution and the like, the following will be described in detail with respect to the manufacturing method of the organic fertilizer using the sludge of the present invention as briefly described above based on the embodiment according to the process Take a look.

That is, the first step of the present invention is a sludge dissociation step, and the conditions are as follows.

First, a large amount of sludge is charged into a cylindrical chamber where steam heat at 100-200 ° C. is indirectly transmitted.

The charged sludge is stirred with a stirring blade to dissociate the aggregated sludge. At this time, the stirring blade is dissociated by agitation at 6-10 revolutions per minute to allow sufficient heat to be transferred to the sludge. Make it easy to dissociate.

These sludges dissociate and the water vapor that evaporates itself by heat is naturally discharged through the outlet.

In the sludge dissociation process, if the temperature in the cylindrical chamber is 100 ° C or less, it is difficult to sterilize the bacteria contained in the sludge, and in the dissociation of the sludge, bubbles are not generated when discharging the sludge. There was a disadvantage in that it takes time, and when the temperature is more than 120 ° C, the sludge is partially discolored due to the overheating temperature, and the dissociation time is not reduced despite the excessive power consumption.

In addition, if the stirring blade is rotated 6-10 times per minute, the stirring blade takes a lot of time, that is, it takes a lot of time to dissolve. Due to the overload of the driving device and the reason that the stirring blade condenses the sludge as it is, the stirring, that is, grinding is not well performed.

These are separately charged 500 kg, 1000 kg and 1500 kg of sludge into the drying treatment apparatus of pulp, paper sludge and paper sludge, which are filed with the applicant of the same applicant, and indirectly the temperature in the cylindrical chamber by steam heat of 100-120 ° C. When the solution was rotated and stirred 6-10 times per minute, it was slightly different depending on the characteristics of the sludge, but completely dissociated between 30 and 60 minutes.

However, when the temperature in the cylindrical chamber was rotated below 100 ° C. and the stirring blade 6 times per minute, the stirring resulted in not only sterilization of sludge but also about 2-3 hours of complete dissociation. In particular, when the rotor was rotated at least 10 times per minute, it was not crushed due to the cohesive force of the sludge and prevented the rotation of the rotor, which caused the overload phenomenon of the power transmission device that rotates the rotor. The large number of revolutions per minute did not easily disintegrate the sludge.

By the sludge dissociation process, the cohesive force of the sludge is broken, and the dissociated sludge takes the sludge drying induction process as the second process.

The conditions of the sludge drying induction process are as follows.

That is, in order to induce moisture evaporation contained in the dissociated sludge itself, the externally heated dry air is continuously supplied to the dissociated sludge, and at this time, the number of revolutions per minute of the stirring blade is increased to 10-14 times. Allow the heated dry air to be sufficiently supplied to the dissociated sludge to dry the sludge, but the forced discharge by the discharger is taken because the amount of water vapor generated from the sludge is large.

At this time, because the water vapor and internal heat in the cylindrical chamber is forcibly discharged by the forced discharge, the temperature in the cylindrical chamber falls, but should be controlled by the operation of the steam boiler so that the temperature does not fall below 60-80 ℃.

Under these conditions, the sludge drying process continues until the sludge has a water content of 40-50%.

In the sludge drying induction process, if the number of revolutions per minute of the stirring blade is less than 10 times, the heat-drying air is not evenly supplied to the dissociated sludge, so that the water content of the dissociated sludge is 40-50. It required long time operation until%, and even if it was more than 14 times, there was a disadvantage that the heating and drying air was not evenly supplied to the dissociated sludge.

In particular, when forced internal discharge of water vapor by the discharger drops below 60-80 ℃, the drying effect of the sludge dissociated by the heating and drying air is extremely low. Moisture discharge occurs only if it is retained, and the heating and drying air at this time increases the drying effect by supplying the heating and drying air to the dissociated sludge after discharging the water from the dissociated sludge.

In the sludge induction process, the sludge dissociated in the sludge dissociation step was carried out in accordance with the above-mentioned drying, and the drying time was 6-8 hours until the water content of the dissociated sludge became 40-50%.

However, when the number of revolutions (RPM) of the stirring blades was set to 10 or less than 14 times, there was a problem that normally takes 10 hours or more, and the temperature inside the temperature dropped to 60 ° C or less while forcibly discharging steam ( Induction of drying at 30-40 ℃ (10-14 times the rotational speed (RPM) of the stirring blade) was required for more than 12 hours, the temperature was maintained at 80 ℃ or more to induce drying As in the case of 6-8 hours, the purpose of achieving the goal was able to achieve the same effect by maintaining at 80 ℃ or more, there was a disadvantage in increasing the operating cost by increasing the operating cost of the facility for maintaining the temperature.

The sludge, which has a water content of 40-50% of the dissociated sludge by taking the sludge dry induction step of the present invention, takes a semi-drying step, which is a third step, wherein the water content is referred to as a semi-dry state. 30 to 40% sludge.

That is, in the semi-drying process, the sludge having a water content of 40-50% is dried again in the sludge drying induction process, and at this time, since the dust starts to be generated in the sludge, the number of revolutions per minute of the stirring blade To 6-10 times, but keep the internal temperature below 60-80 ℃, but dry it but make the forced ventilation by the discharger extremely weak or stop it and discharge water vapor naturally. Semi-dried sludge with water content of about% was obtained.

In this way, the semi-dried jersey with a water content of 30-40% is taken out as it is, and it is mixed with servings, pig meal, poultry meal, vermiculite, zeolite, rice bran, and lime (hereinafter referred to as additive) to deposit the sediment in the yard It takes natural fermentation to obtain organic fertilizer.

There were some differences in the natural fermentation time of semi-dry sludge depending on the type of additives in this deposition process, but there was no big difference. When the water content of the semi-dry sludge mixed was less than 30% or more than 40%, there was some difference. .

In other words, 10-30wt% of the additive per 100wt% of semi-dry sludge was the most suitable. When it became less than 10wt%, the ripening (fermentation) time was delayed due to the high carbon content of semi-dry sludge. The excessive content of the additives had the disadvantages that the fermentation of the soil was lowered and severe odor occurred during fermentation (fermentation).

And when the water content of the semi-dry sludge is 30% or less and 40% or more, it was mixed and mixed with the additives under the above conditions. The fermentation time required to meet the necessary conditions as an organic fertilizer had a disadvantage. .

In addition, when the latent heat of the semi-dry sludge remained, it was rotted and deposited with the additives, and the fermentation time was shortened.

The present invention can not only fundamentally solve the problems caused by various environmental pollutions as described above, but also can be recycled as organic fertilizers, especially the sludge contains organic and inorganic materials necessary for the soil, together with additives. Ripened (fermented) organic fertilizers are considered to be useful as very useful inventions with high ineffectiveness in soil.

Claims (3)

In the preparation of organic fertilizer by treating pulp, paper sludge and paper sludge agglomerated by compression, 6-per minute per minute while the pulp, paper sludge and paper sludge are heated by steam indirect heat of 100-200 ° C. Dissociate the pulp, paper sludge and paper sludge agglomerated by 10 stirring blade rotation, but the steam generated is divided into the sludge dissociation process which naturally discharges, and the pulp, paper sludge and paper sludge dissociated by the sludge dissociation process. The steam produced by drying the pulp, paper sludge and paper sludge is forced out by supplying heated dry air heated from the outside while stirring with 10 to 14 stirring blade rotations, but the temperature of the pulp paper sludge and paper sludge is 60-80. Sludge drying induction process to dry until the water content of pulp, paper sludge and paper sludge dried to not be below ℃ ℃ 40-50%, and the sludge drying Pulp, paper sludge and paper sludge with 40-50% water content are dried during stirring at 6-10 revolutions per minute without falling to the temperature of 60-80 ℃. Semi-drying process for semi-drying with pulp, paper sludge and paper sludge with water content of 30-40%, and per 100 wt% pulp, paper sludge and paper sludge with water content of 30-40% obtained in the semi-drying process. Pulp, paper sludge, and papermaking, characterized in that the organic fertilizer is manufactured by sequentially depositing 10-30wt% of additives, such as pig meal, poultry meal, vermiculite, zeolite, rice bran, and lime, and depositing them in a yard. Method for producing organic fertilizer using sludge. The pulp, paper sludge and paper sludge according to claim 1, wherein the pulp, paper sludge, and paper sludge having a water content of 30-40% during the deposition process are mixed with the additives in a state of retaining latent heat. Organic fertilizer manufacturing method using. According to the method of claim 1, 10-30 wt% of additives such as pulp, pulp, paper sludge and 100% by weight of pulp, paper sludge and paper sludge with water content of 30-40% are mixed and fermented. Organic fertilizer using pulp, paper sludge and paper sludge, characterized in that to obtain an organic fertilizer.