KR920001519B1 - Process for preparation artificial fertilizer used with sludge - Google Patents
Process for preparation artificial fertilizer used with sludge Download PDFInfo
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- KR920001519B1 KR920001519B1 KR1019890020411A KR890020411A KR920001519B1 KR 920001519 B1 KR920001519 B1 KR 920001519B1 KR 1019890020411 A KR1019890020411 A KR 1019890020411A KR 890020411 A KR890020411 A KR 890020411A KR 920001519 B1 KR920001519 B1 KR 920001519B1
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- sludge
- slaked lime
- raw water
- fertilizer
- wollastonite
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D3/00—Calcareous fertilisers
- C05D3/02—Calcareous fertilisers from limestone, calcium carbonate, calcium hydrate, slaked lime, calcium oxide, waste calcium products
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- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
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Abstract
Description
제1도는 종래의 원정수처리공정을 나타내는 개략도이다.1 is a schematic view showing a conventional raw water treatment process.
본 발명은 원정수슬러지를 이용한 규회석비료제조방법에 관한 것으로서, 보다 상세하게는 원정수설비에서 발생된 슬러지케이크를 이용한 규회석비료제조방법에 관한 것이다. 통상, 원정수설비공정에서는 슬러지케이크가 발생되는데 이는 주로 폐기처분하고 있다. 그러나, 상기와 같은 슬러지케이크를 그대로 폐기처분하는 경우 폐기장 주위에 부유물질(Suspended Solid) 및 수소 이온농도(pH)가 증가되어 주위를 오염시킬 뿐만 아니라, 슬러지케이크자체에는, 하기 표 1에 나타난 바와 같이, 알칼리분(CaO+MgO)이 다량함유되어 있으므로 이를 그대로 폐기하는 경우 자원의 활용면에서도 비경제적이 된다.The present invention relates to a wollastonite fertilizer manufacturing method using the raw water sludge, and more particularly, to a wollastonite fertilizer manufacturing method using the sludge cake generated in the filtration plant. Usually, sludge cake is generated in the raw water treatment plant, which is mainly disposed of. However, when the sludge cake is disposed of as it is, suspended solids and hydrogen ion concentrations (pH) increase around the waste site to contaminate the surroundings, and the sludge cake itself is shown in Table 1 below. Similarly, since alkali content (CaO + MgO) is large, when it is disposed of as it is, it is uneconomical in terms of resource utilization.
[표 1]TABLE 1
이에, 본 발명의 목적은 상기와 같은 종래의 문제점을 동시에 해결하기 위하여, 원정수슬러지를 이용하여 규회석비료를 제조하는 방법을 제공하고자 하는데 있다. 즉, 본 발명에 의한 방법에 의하면, 슬러지케이크에 자원이 풍부하고 가격이 저렴한 CaO를 주성분으로 하는 소석회를 배합하여, 상기 슬러지케이크중의 알키리분을 높여 이를 규회석비료로 이용하는 방법이 제공된다.Accordingly, it is an object of the present invention to provide a method for manufacturing wollastonite fertilizer using raw water sludge in order to solve the above conventional problems at the same time. That is, according to the method according to the present invention, there is provided a method in which sludge cake is formulated with calcined lime containing as a main ingredient CaO, which is rich in resources and inexpensive, thereby increasing the alkyri content in the sludge cake and using it as wollastonite fertilizer.
본 발명은 원정수 설비공정에서 발생한 원정수 슬러지케이크를 비료로 사용하기에 적합할 정도의 입도로 분쇄한 후, 분쇄된 슬러지에 소석회를 소석회의 알칼리분이 71%인 경우, 중량비로, 1 : 0.4-1 : 0.76(슬러지 : 소석회)의 배합비로 배합시키는 원정수 슬러지를 이용한 규회석비료제조방법에 관한 것이다.In the present invention, after crushing the raw water sludge cake generated in the raw water plant process to a particle size suitable for use as a fertilizer, when calcined sludge has an alkali content of 71% of slaked lime, the ratio is 1: 0.4-1. It relates to a method for producing wollastonite fertilizer using raw water sludge mixed at a blending ratio of 0.76 (sludge: slaked lime).
이하, 본 발명에 대하여 상세히 설명한다.EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated in detail.
통상적으로 본 발명에서 원료로 사용되는 슬러지케이크는 제1도에서와 같이 처리된다. 즉, 강제침전지와 여과지에서 발생된 폐수를 탱크(pit)에 저장한 후, 이를 농축기(thickener)로 이송후 처리한다. 여기서 처리된 처리수중 상등수는 회수되어 회수탱크를 통해 다시 침사지로 이송되어 원수로 재이용하며 나머지는 농축탱크(concentration tank)를 통해 슬러지는 농축되며 처리수는 회수탱크로 유입된다. 상기 농축슬러지는 자연침강으로 재농축되며(함수율 98%), 재농축된 슬러지는, 진공탈수기에서 탈수효율을 높이고 슬러지케이크화를 용이하게 하기 위해 소석회와 혼합되고, 진공탈수기를 거쳐 함수율 78% 슬러지케이크로 된다.Typically, the sludge cake used as a raw material in the present invention is treated as in FIG. That is, after storing the wastewater generated in the forced sedimentation and filter paper in the tank (pit), it is transferred to a thickener (treater) and processed. The supernatant of the treated water is recovered and transported back to the settlement through the recovery tank and reused as raw water. The remaining sludge is concentrated through the concentration tank and the treated water is introduced into the recovery tank. The concentrated sludge is re-concentrated by natural sedimentation (water content 98%), and the re-concentrated sludge is mixed with slaked lime to improve the dehydration efficiency and facilitate sludge cake in a vacuum dehydrator, and the water content 78% sludge through a vacuum dehydrator. It becomes a cake.
여기서 소석회는 응집제의 역할을 한다.Here, slaked lime acts as a flocculant.
상기 슬러지케이크는 100-110℃로 항온된 건조기내에서 건조된 후 폐기되는바, 본 발명에서는 이러한 상태의 슬러지케이크를 이용하는 것이다. 이 같은 상태의 슬러지케이크는 표 1에서 보는 바와 같이 다량의 알카리분(CaO, MgO)을 함유하고 있는바, 본 발명에서는 이러한 슬러지케이크에 통상의 알칼리분 소석회를 알칼리분이 71%인 경우 슬러지와의 배합비가 1 : 0.4-1 : 0.76(슬러지 : 소석회)의 비율이 되도록 배합함으로써 슬러지케이크의 알칼리분을 높여 규회석비료로 활용할 수 있는 것이다.The sludge cake is dried in a drier at 100-110 ° C. and then discarded. The present invention uses sludge cake in this state. The sludge cake in such a state contains a large amount of alkali powder (CaO, MgO), as shown in Table 1, in the present invention, such a sludge cake with a conventional alkaline powdered lime in the case of 71% alkali By blending the mixture in a ratio of 1: 0.4-1: 0.76 (sludge: slaked lime), the alkali content of the sludge cake can be increased and used as wollastonite fertilizer.
여기서, 슬러지케이크는 소석회와의 배합전, 비료로 적절히 활용할 수 있는 정도로 분쇄하는 것이 좋으며, 소석회의 알칼리분에 따라 배합비는 다르게 될 것이다.Here, it is preferable to grind the sludge cake to the extent that it can be suitably utilized as a fertilizer before blending with slaked lime, and the blending ratio will vary depending on the alkali content of slaked lime.
이하, 본 발명은 실시예에 따라 보다 상세히 설명한다.Hereinafter, the present invention will be described in more detail according to embodiments.
[실시예]EXAMPLE
105℃로 항온된 건조기에서 건조된 슬러지케이크를 0.074㎜ 이하로 분쇄하였으며, 분쇄된 슬러지의 성분을 분석한 결과 상기 표 1과 같은 성분비를 나타내었다.The sludge cake dried in a drier incubated at 105 ° C. was pulverized to 0.074 mm or less, and the components of the pulverized sludge were analyzed.
상기 분쇄된 슬러지에 알칼리분 71%인 소석회를 각각 1 : 0.3, 1 : 0.39, 1 : 0.4, 1 : 0.5, 1 : 0.76, 1 : 0.77의 비율로 배합한 후 그 성분분석을 한 후, 그 분석결과를 하기 표 2에 나타내었다. 하기 표 2에는 슬러지와 소석회의 배합비에 따른 SiO2및 알칼리분 조성의 변화 및 통상의 규회석 비료가 함유하여야 할 SiO2및 알칼리분의 최소량이 나타나 있다.The calcined sludge was formulated with a hydrated lime with an alkali content of 71% at a ratio of 1: 0.3, 1: 0.39, 1: 0.4, 1: 0.5, 1: 0.76, 1: 0.77, and then analyzed for its components. The analysis results are shown in Table 2 below. Table 2 shows the changes in the composition of SiO 2 and alkali powders according to the mixing ratio of sludge and slaked lime, and the minimum amount of SiO 2 and alkali powders to be contained in a conventional wollastonite fertilizer.
[표 2]TABLE 2
상기 표 2에 나타난 바와 같이, 슬러지케이크와 소석회 배합비율을 1 : 0.4로 한 경우에는 알칼리분이 규회석비료가 함유하여야 할 주성분의 최소량인 40% 이상으로 되어 우수한 규회석비료로 사용할 수 있음을 알 수 있다. 그러나, 슬러지케이크와 소석회배합비율을 1 : 0.3으로 한 경우에는 알칼리분이 37.7%로 되어 규회석비료로 사용할 수가 없다. 또한, 배합비율을 1 : 0.5로 한 경우에는 알칼리분이 42.1%로 우수한 규회석비료가 된다. 그러나, 배합비를 1 : 0.77로 하였을 경우에는 규회석비료가 함유하여야 할 SiO2최소량 10%에 미달하므로 규회석비료로 사용할 수가 없다. 그러므로 슬러지케이크와 소석회의 배합은 1 : 0.4-1 : 0.76의 배합비 범위에서 행하는 것이 바람직함을 알 수 있다.As shown in Table 2, when the ratio of sludge cake and slaked lime is 1: 0.4, it can be seen that the alkali content can be used as an excellent wollastonite fertilizer since the alkali content is at least 40%, which is the minimum amount of the main component to be contained. . However, when the sludge cake and the slaked lime compounding ratio are 1: 0.3, the alkali content is 37.7% and cannot be used as wollastonite fertilizer. When the blending ratio is 1: 0.5, the alkali content is 42.1%, which is an excellent wollastonite fertilizer. However, when the blending ratio is 1: 0.77, it cannot be used as wollastonite fertilizer because the wollastonite fertilizer is less than 10% of SiO 2 minimum. Therefore, it turns out that it is preferable to mix | blend sludge cake and slaked lime in the compounding ratio range of 1: 0.4-1: 0.76.
상술한 바와 같이, 본 발명은 원정수 설비공정에서 발생되는 페슬러지케이크를 활용해서 규회석비료로 이용함으로해서 폐기장에 폐기처분했을 경우 야기되는 수질오염을 방지하고 또한 규회석비료로 활용해서 경제적인 효과를 기대할 수 있는 효과가 있는 것이다.As described above, the present invention utilizes the pestle cake produced in the raw water plant process as a wollastonite fertilizer to prevent water pollution caused by disposal at the waste site and also to utilize the wollastonite fertilizer to expect economic effects. It can be effective.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019890020411A KR920001519B1 (en) | 1989-12-30 | 1989-12-30 | Process for preparation artificial fertilizer used with sludge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019890020411A KR920001519B1 (en) | 1989-12-30 | 1989-12-30 | Process for preparation artificial fertilizer used with sludge |
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| Publication Number | Publication Date |
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| KR910011708A KR910011708A (en) | 1991-08-07 |
| KR920001519B1 true KR920001519B1 (en) | 1992-02-15 |
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| KR1019890020411A KR920001519B1 (en) | 1989-12-30 | 1989-12-30 | Process for preparation artificial fertilizer used with sludge |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100311568B1 (en) * | 1999-08-07 | 2001-11-14 | 김용구 | Calcium hydroxide manure using the sugar sludge and manufacturing method thereof |
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