KR100222637B1 - Fertilizer using water waste sludge and fly-ash and the process thereof - Google Patents

Abstract

Wastewater treatment sewage sludge, sludge sludge, antibiotic fermentation sludge, fly ash used in the present invention has been a long-term problem in the environmental field, research and development of recycling technology, but the development technology so far is economical The sewage sludge sludge is 7%, fly ash 18%, the degree of recycling is known to be recycled, and most of it is treated as a landfill, which has emerged as a serious social problem due to landfill and secondary pollution. Technical problem of solving the environmental pollution problem and recycling and manufacturing technology as water fertilizer by utilizing the characteristics of ingredients to save the environment and reduce the secondary pollution to save the environment and the cost of treating these wastes Environmentally-friendly and beneficial inventions to solve the problems of sewage treatment plant sludge and livestock wastewater treatment plant sludge and antibiotic fermentation sludge Moisture is controlled by other wastes such as fly ash and sawdust, which are then composted by aerobic microorganisms. Soil modifiers such as organic matter, fertilizer, silicic acid, lime, and gourd are stabilized evenly and contain all ingredients necessary for the improvement of paddy soil. It contributes to solving the problem of environmental preservation by producing a fertilizer and reducing it to the soil, saving soil and producing agriculture to produce high-quality fine rice for the cheap import of foreign rice in the era of infinite competition under the WTO agreement. It is a useful invention that provides water-efficient labor-efficient fertilizer and its manufacturing technology for water supply necessary for the self-sufficiency of stocks (rice) for food security.

Description

Fertilizer using sewage sludge sludge and fly ash and its manufacturing method

The present invention relates to a method of controlling sludge containing sewage treatment plant sludge and livestock wastewater joint treatment plant sludge and fermented sludge with fly ash and sawdust.

Sludge sludge from all our sewage treatment plants reaches 3,300 tons based on the daily humidity in 1995. Since then, sewage sludge treatment plants have been expanded nationwide, and the annual increase is about 8950 tons in 2001 and about 10,020 in 2011. It is estimated to reach tons.

According to the Ministry of Environment's data on the nation's waste generation and treatment in 1995, 5% of incineration, 88% of landfill, and 7% of recycling are relying on landfill, and the problem of securing landfills is a serious social problem. It is emerging as a national research project in terms of environmental conservation. The sewage sludge treatment technology has been incinerated at home and abroad, and a method of solidifying and disposing by using a curing agent, etc., but secondary pollution after the treatment is inevitable, and the problem of enormous treatment costs is pointed out.

The process sludge produced after the manufacture of antibiotics (Cephalosporin) by fermentation method reaches tens of thousands of tons per year, but most of them are discharged after purification treatment due to lack of recycling technology. Fly-ash generated from coal-fired power plants and sludge incinerator waste incinerators amounted to 3.12 million tons per year in 1996, and 5.7 million tons in 2005 due to the expansion and increase of coal-using wells. It is estimated to reach about 6 million tons per year.

In 1995, the fly ash recycling rate was about 18%, which was recycled with cement and ready-mixed concrete mixtures, most of which was buried in ash processing plants.

[references ; Korea Electric Power Corporation '96. International Workshop on Fly Ash.

(The present situation and measures of coal ash processing); Oh Seong-Won, Deputy General Manager, Korea Electric Power Corporation]

R & D of these waste recycling technologies is being actively conducted by research institutes, dischargers, and recycling companies, but the development of high value-added fertilizer technology has not been done yet. Accordingly, an object of the present invention is to provide a fertilizer that solves pollution problems such as odorless, groundwater caused by leachate, and groundwater and water pollutants caused by landfilling or discharging untreated waste in principle, and propagating pathogens to animal human body. It is done. It is another object of the present invention to provide a technique for reducing resources and preventing environmental pollution, organic matter, fertilizer, siliceous by aerobic fermentation using sewage sludge or antibiotic fermentation waste liquid and another waste, Fly ash, as a moisture control material. It is an object of the present invention to provide a method for producing a fertilizer containing all the components necessary for soil improvement.

Fly ash is a porous body of 0% moisture content consisting of soluble siliceous, lime, goto, galley, iron, and other active ingredients as shown in Table 2, and has high adsorption capacity and excitability of moisture and nutrients. As a slow release fertilizer and bulking agent, it has very suitable physical properties.

The characteristics of paddy soils in Korea are low inputs of organic materials and soil improving agents (SiO, CaO, MgO), which is threatened by continuous environmental agriculture because the intellect is greatly below the appropriate standards as shown in the table below.

The composition of the present invention by fermentation and stabilization at the same time fermentation and stabilization of sewage sludge with high organic matter and fertilizer components, fermented waste waste and high content of soil-improved minerals, fertilizer components (NPK) 3 ~ 5% It solves the environmental pollution problem by recycling it as a comprehensive soil agent containing 10 ~ 25% of effective minerals (Si, Ca, Mg) and becomes a fertilizer suitable for paddy soil improvement.

The fertilizer required for 110 ha of land area, which occupies about 60% of 195 ha of agricultural land in Korea, is about 4-5 million tons per year.

In particular, the content of siliceous fertilizer is significantly lower, and the proper content is reduced from 88ppm in 1988 to 72ppm in 1995, and 97.2% of all rice fields in Korea lack silicic acid, so the government should recognize it and give it siliceous fertilizer. Is applied annually at national expense.

Fly ash contains more than 50% siliceous on average, and when it is reduced to paddy soil, the siliceous absorbed when rice grows forms silicic cells, which increases the resistance to pests and insect pests such as rice blast, reducing the amount of pesticide use. It is effective in enhancing the uniformity of the cultivation and improving the light receiving condition of the foliage, thereby increasing the ripening stability, contributing to the increase of 11 ~ 15% of rice and the production of high quality fine rice (National Agricultural Cooperative Federation's soil fertilizer project direction p29). .

Cultivation of siliceous fertilizers (1, 2) When a siliceous fertilizer of 60 ppm is given to 300 kg of siliceous fertilizer per 10 a, the rice is increased by an average of 11%. In particular, it is possible to increase the efficiency by increasing the efficiency of nitrogen, and 51% of thermal diseases and 20% of high-temperature mountainous areas were increased (see National Agricultural Cooperative Federation '96, 12: Soil Rehabilitation and Soil Improvement p35). Of the three components of fertilizers, the most nourishing rice yield or quality is the use of nitrogen. In the production of 100kg of rice, 1.8kg of fertilizer is absorbed while silicic acid is 14.8kg, which is 8 times.

Since the rice, which has been absorbed by a large amount of silicic acid, has upright leaves, the weakening of the light-receiving posture caused by excessive nitrogen fertilizers, pests, dobok, etc. has been alleviated, and the yield of rice has increased by 52%.

The use of low-pesticide-free chemical fertilizers at one time during rice cultivation prevents the occurrence of pests and dobok damage, resulting in cost and labor savings in the preparation of fertilizers, pesticide spray and dobok rice. Received a higher price (22 ~ 240,000 won).

Schematic sludge sludge and antibiotic fermentation sludge in Fly ash and sawdust as a moisture control agent outline of the manufacturing process of the present invention is as follows.

On the basis of Table 5 attached to the back of the present invention will be described in detail the manufacturing method of water-efficient, labor-saving fertilizer for water.

In order to shorten the fermentation period after mixing 75% ~ 95% of sewage sludge sludge and antibiotic fermentation sludge with fly ash, which has a water content of 5% or less, and sawdust, and 60 ~ 70% moisture content suitable for aerobic fermentation. It is a method of shortening the composting fermentation period to 2 ~ 3 weeks at 70 ~ 80 ℃ high temperature by aerobic microorganism while injecting air into fermentation tank, spiral fermentation tank, and stirred fermentation tank equipped with spiral screw two-stirrer.

Pathogens, parasites and weed seeds are killed during high temperature fermentation. Hazardous organics are oxidized and synthesized by aerobic microorganisms through biochemical reactions to decompose and evaporate harmful substances. Synthesis into nutrients, characterized by a method for producing a fertilizer-type fertilizer is stabilized evenly organic and inorganic.

More detailed description of each process is as follows.

1st step: conveying mixing process of moisture control material

Sewage treatment sludge, sludges and antibiotic fermented sludge are wood flour (sawdust, rice paddy, bark flour, rice husk, wood chip) as a B / Kimg agent for controlling the C / N ratio (carbon mass rate) breathability and moisture content suitable for fermentation. ) It is transported to tank lorry with 5 ~ 30% by weight and fly ash content of 5% or less and mixed at 70 ~ 95% by weight and stored in a silo (tank).

Second process: transport of sewage sludge sludge, antibiotic fermentation waste liquid

Sewage treatment plant sludge, sludge and fermented sludge from antibiotic plant are transported to tank lorry and stored in tank or directly put into stirred fermentation tank.

3rd process: Mixing process of sewage sludge sludge, antibiotic fermentation sludge and moisture control material 70 ~ 95% of sewage sludge, antibiotic fermentation sludge 60 ~ 80 wt% Adjust to 60 ~ 70%, and go through the mixing agitation process with a spiral screw type two-stage stirrer of the stirred fermentation tank to decompose the mass. When using a ventilated fermentation tank, 60 ~ 80% by weight of sewage sludge sludge or antibiotic fermentation sludge is added at a rate of 20-40% by weight of a moisture control agent. After adjusting it to -50, it is put into a vented fermenter by a skid steer loader.

Fourth Process: Fermentation Process

In order to shorten the fermentation period in connection with the third mixing process as described above, a stirred fermentation tank (Pit) or a ventilated fermentation tank is used. Depending on the processing capacity, the fermenter side is connected to a pipeline that can inject air into the bottom of a tunnel fermenter with a length of 60 to 120m, a width of 4 to 8m, and a depth of 1.5 to 2.0m. The stirring fermentation operation | movement is simultaneously carried out using the blower installed in this at the same time, supplying the air required for fermentation drying easily for 24 hours.

In the fermentation process, a rotary stirring fermentation system is introduced to uniformly add air into the mixture accumulated at a depth of 130 to 180 cm and moisture evaporation to draw the material of the lower part of the fermenter to the top, and to the top by installing a spiral screw two-stirrer. Upside down, evenly scattered in all directions, agitation, increased breathability and oxygen supply, shorten the fermentation period by helping the evaporation of moisture, moving from the front to the back, aerobic fermentation proceeds. If fermentation starts within 24 to 48 hours (summer to winter) after being put into the fermenter, steam is generated. After 2 to 4 days, the steam rises above 40 ~ 60 ℃. It shows a temperature distribution of 70 ° C, and basic microorganisms are reduced by activation of aerobic microorganisms. When fermentation slows the temperature rise, aerobic microbial agents are sprayed. As fermentation, drying, and evaporation are performed by automatic mechanical operation, the inside of the fermenter rises to a temperature of 60-70 ℃ after half of the fermenter, and gradually decreases to 40-50 ℃ after 2/3 of the fermenter. The moisture content is below 40%, and fermentation is stopped after two weeks. Fertilizer components that are stabilized even after fermentation are the same as in the test report of FIG.

Step 5: Additive Mixing and Packaging

As described above, the fertilizer prepared by the present invention may contain heavy metals in the sewage sludge sludge and the waste liquid, and mix 3 to 10% by weight of lignite, activated carbon geolite, or the like as a buffer material to supplement the insufficient fertilizer component. To this end, an amino acid stock solution such as monosodium glutamate (MSG), guanylic acid monophosphate (GMP), and inosinic acid mono phosphate (IMP) is added and packaged.

The above-described numerical values are for the experiment of the present invention, so the present invention is not limited to the above numerical values.

Example of fertilizer cultivation of the present invention (3) 'The results of the water cultivation experiment of the fertilizer of the present invention in 1996 are as follows.

Under the WTO Agreement, it contributes to the creation of agricultural infrastructure for the self-sufficiency of stocks (rice) in the era of infinite competition, and to raise international competitiveness by reducing rice production costs and vitalization in order to prepare for the lack of rural labor force and to reduce pesticide spraying labor. It is a beneficial invention to provide a slow labor-efficient fertilizer for water.

Claims (5)

60 ~ 80% by weight of sewage sludge sludge and antibiotic fermentation waste, 20 ~ 40% by weight of moisture control material is mixed with Fly-ash and wood powder to adjust the initial water content to 60 ~ 65% and fermented and dried by aerobic microorganism. And then a substance having a high base substitution capacity such as porous lignite, activated carbon, zeolite, and coal ash, and an amino acid solution of monosodium glutamate (MSG), guanoic acid monophosphate (GMP) and inosinic acid monophosphate. Fertilizer manufacturing method using sewage sludge sludge and fly ash. The fertilizer manufacturing method using sewage sludge sludge and fly ash, characterized in that the fermentation by aerobic microorganisms is a ventilation fermentation tank, a stirred fermentation tank. According to claim 1, characterized in that for the wood components, sawdust, bark flour, large rice, wood chip milled chaff and other expanded materials such as vermiculite, lime, geolite and sludge burning material, Dongtan, peat straw, etc. Fertilizer manufacturing method using sewage sludge sludge and fly ash. The fermentation method according to claim 1, wherein the fermentation by aerobic microorganisms is carried out by natural microorganisms contained in sludge sludges or other additives, or by using aerobic microbial agents. Fertilizer using sewage sludge sludge and fly-ash prepared by the method of claim 1.