• Title/Summary/Keyword: Paper Mill Sludge

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Influence of Paper Mill Sludge and Briquet Ash on the Growth of Zoysiagrass (제지(製紙)슬러지와 연탄재가 들잔디의 생육(生育)에 미치는 영향(影響))

  • Ku, Ja Hyeong;Kim, Tae Il;Ahn, Joo Won;Kim, Moon Kyu
    • Korean Journal of Agricultural Science
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    • v.19 no.2
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    • pp.153-160
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    • 1992
  • To investigate the potential of paper mill sludge and briquet ash as cultural media in turfgrass, zoysiagrass was grown in the mixtures prepared with paper mill sludge and briquet ash. The mixtures were consisted of sludge and briquet ash in the ratio by volume 3:1, 2:1, 1:1, 1:2, and 1:3 in the order. To compare the growth responses, some plants were grown in the medium containing sand(3), field soil(1) and peatmoss (1) by volume anti regarded as control. 1. Activated sludge mixed with sand increased plant height, fresh weight, and dry weight more than 1.5-2.0 times compared to those of the control. The highest plant growth was shown in mixtures containing 67% activated sludge. 2. Plant density per $100cm^2$ and chlorophyll content were higher in all mixtures containing activated sludge than control. 3. The growth of zoysiagrass was reduced along with the increase of non-activated sludge ratio, but no difference was found in chlorophyll content. 4. Plant height, fresh weight and dry weight were greater in activated sludge combined with sand compared to the briquet ash mixtures, but the difference of shoot density between two mixtures was not shown. 5. Even though non-activated sludge appeared not to be appropriate to the growth of seedlings, the number of tillers of plant propagated with rhizome was more increased compared to control when briquet ash content was less than 75%.

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Studies on the recycling of sludge originated from a copy paper mill by calcination (백상지 슬러지의 소성처리에 의한 재활용에 관한 연구)

  • Cho, Jun-Hyung;Choi, Yun-Sung;Park, Kyo-Heoun
    • Journal of Korea Technical Association of The Pulp and Paper Industry
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    • v.42 no.1
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    • pp.1-6
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    • 2010
  • Paper industry in Korea produces 14 million tons of paper and 1.3 million tons of sludge per year. Most of them has been treated by incineration, landfilling or ocean dumping. The sludge recycling to minimize the impact on the environment, so its importance is highlighted. In this study, in order to develop a new way of recycling the sludge, it was calcined and the recycled ash was tried to use as papermaking filler. Concerning the yield of calcium carbonate and the brightness and the rheology of the recycled calcination sludge, the optimum calcination conditions were found to be $600^{\circ}C$ and 12 hours. The sludge ash itself was not suitable for papermaking due to its color and low brightness. Thus the ash from the sludge was first mixed with a commercial filler and then utilized for papermaking. The effect of the increased hardness after high temperature treatment on wire abrasion was confirmed.

Studies on Environmental Impact of Pulp and Addtives in Liner Papermaking

  • Seo, Jin-Ho;Kim, Hyoung-Jin
    • Proceedings of the Korea Technical Association of the Pulp and Paper Industry Conference
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    • 2006.06b
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    • pp.441-444
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    • 2006
  • A lot of water is using in the paper mill for dilution, washing, sealing, and other process operation. As the regulation of water environment has been more tightened than ever before, water management in the paper mill becomes the most important task. Topics on reducing fresh water and increasing recycling water have been studied. Further, an interest in zero-effluent system has been increased. The pH of waste water in paper mill is usually weak acidic or neutral. The waste water in the paper mill includes water insoluble organic materials that are not easy to be dissolved in the water, inorganic materials that never react with water and chemical additives that are used to recycled fiber. This study investigated on the effect of various materials used in paper mill on COD. This data could be used to control the environmental load in paper mill. COD caused by raw materials and NBDCOD (Non Bio Degradable COD) after the activated sludge process are investigated in this study. Results obtained in this study can be used in a simulation program designed to control environmental load in the paper mill.

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Effects of Paper Mill Sludge Application on Early Growth of Acer palmatum Thunb. and Soil Physicochemical Properties of Forest Nursery (제지슬러지의 시용이 묘포의 단풍나무 초기생장과 토양의 이화학적 특성에 미치는 영향)

  • Park, Hyun;Lee, Don Koo
    • Korean Journal of Soil Science and Fertilizer
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    • v.31 no.1
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    • pp.39-45
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    • 1998
  • As a basic research for developing a sludge application technique in forestry, this study was conducted to investigage a reasonable amount and period of sludge to be applied onto forest nursery of Acer palmatum Thunb. The paper mill sludge was used for the study, and ammonium nitrate was treated to some of them to reduce the C/N ratio lower than 40. The maximum amount of applied sludge was 7ton/ha/year, and they were spread on spring and on late summer. The sludge application did not stimulate early growth of the trees during a year. Since there was no significant changes in soil chemical properties, the amount of applied sludge was thought to be too little to result in a significant role for tree growth. However, the soil water showed significant increase of Cu when the activated sludges were applied during late summer. Thus, the time of application need to be determined cautiously with considering the risk of ground water contamination. In conclusion, if we set a goal from the view point of long-term concept such as forest productivity rather than to get a short-term product, the uncomposted sludge in small amount during growing season might be considered to be applied on forest nursery.

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A Rational Operation Scheduling Using Genetic Algorithms on Cogeneration System for Paper Mill (제지공장용 열병합발전시스템에서 유전알고리즘을 이용한 합리적 운전계획 수립에 관한 연구)

  • Choi, Kwang-Beom;Lee, Jong-Beom;Jeong, Ji-Hoon
    • Proceedings of the KIEE Conference
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    • 1999.11b
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    • pp.291-293
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    • 1999
  • This paper proposed the optimal operational scheduling of cogeneration system for paper mill connected with several auxiliary devices. Auxiliary devices that include auxiliary boilers, waste heat boilers and sludge incinerators operate with multi-cogeneration systems. Especially environment element was considered in objective function to solve the environment problem. And GAs(Genetic Algorithms) was applied to optimize and to analyse nonlinear operational property of cogeneration system of paper mill connected with several auxiliary devices. C-language was used to GAs computation. Electricity can be purchased through power system from utility. The proposed operational strategy on cogeneration system for paper mill to increase energy efficiency can be applied to the similar cogeneration system of industrial field.

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Development of Product System on Artificial Aggregate using of Paper Sludge Ash (제지 슬럿지 소각회를 이용한 인공골재 생산공정개발)

  • 백명종;박칠림;소양섭
    • Proceedings of the Korea Concrete Institute Conference
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    • 1997.10a
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    • pp.69-75
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    • 1997
  • This studies regarding deveolpment of product system on artificial aggregate using of Paper Sludge Ash that waste production at paper-making mill. Expecially this paper discribes development of product system using centrifugal mixer plant. The skills of this product system on artificial aggregate using of Ash can be spread Fly-Ash, powder and fine aggregate (under 5mm) of waste concrete reuse.

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Pyrolysis Characteristics of Sludge Discharged from Paper Mill Process (제지공정에서 발생하는 슬러지의 열분해 특성)

  • Ko, Jae-Churl;Kim, Seung-Ho;Park, Young-Koo;Jeon, Jea-Yeoul;Kim, Jin-Ho;Park, Joon-Seok
    • Journal of the Korea Organic Resources Recycling Association
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    • v.17 no.1
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    • pp.80-87
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    • 2009
  • This research was conducted to evaluate pyrolysis characteristics of the sludge discharged from paper mill process with sintering temperature. The sludge was composed of 70.72% of moisture, 9.52% of volatile solids, and 19.76% of ash, respectively. The sludge contained high 66.40% of $Fe_2O_3$ and CaO(15.80%), $Al_2O_3$(9.42%), and $SO_3$(3.75%) components, and minor $SiO_2$, $Na_2O$, and $Cr_2O_3$ were also contained in it. The other components except $Fe_2O_3$ and $Cr_2O_3$ were slightly decreased with increase of sintering temperature. Specific surface area of the sludge before sintering was $130m^2/g$ and ones after sintering at $400^{\circ}C$ and $700^{\circ}C$ were $114m^2/g$ and $33m^2/g$ respectively. Specific surface area of sludge was decreased with increase of sintering temperature. From the result of TG-DTA, it was shown that weight of the sludge was decreased by moisture and organic loss until $600^{\circ}C$ and decreased by volatilization of metal components and additional combustion of carbon until $800^{\circ}C$.

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Feeding efficiencies and growth rates of tiger worms(Eisenia fetida Savigny) when they were fed with differently pretreated sewage sludges (하수슬러지의 전처리 방법에 따른 줄지렁이(Eisenia fetida savigny)의 섭식효율 및 생장)

  • Park, Kwang-ll;Bae, Yoon-Hwan
    • Journal of the Korea Organic Resources Recycling Association
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    • v.11 no.4
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    • pp.66-78
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    • 2003
  • The effects of several factors such as heavy metals, living microorganims, high molecular conglomerator in sewage sludge were analysed. And the effects of the sewage sludges which were mixed with other organic waste such as paper mill sludge or night soil sludge upon the feeding rate and biomass of earthworm population were also estimated. The earthworm populations could not survive when newly produced sewage sludges were fed without any pretreatment. The contents of heavy metals were under the levels that could inhibit earthworm's growth. The living microorganisms and the high molecular conglomerator in the sewage sludge had no relations with ecotoxicological effects of sewage sludge upon the earthworm population. Sewage sludge which had been mixed with paper mill sludge and aged for more than 21 days showed no ecotoxicological effects on tiger worm(Eisenia fetida) population. And the feeding rate of earthworm population and the turnover rate of earthworm biomass were higher in those sewage sludges than in the sewage sludges pretreated by other ways.

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A Study on the Reusability of Incinerated Paper Mill Sludge Ash as Cement Additive (시멘트 혼화재로서 제지슬러지 소각재의 재활용 특성)

  • 주소영;연익준;이민희;박준규;김광렬
    • Journal of environmental and Sanitary engineering
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    • v.18 no.2
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    • pp.34-41
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    • 2003
  • The purpose of this study is to examine the effect of stabilization disposal and recycling on incinerated paper mill sludge ash as cement additives. It was investigated chemical(pH, ICP, TGA XRD) and physical(PDA, SEM) characteristics of the incineration ash. And the pozzolanic characteristics of incineration ash was applied to cement as additive to increase the compressive strength. The results were that the pH characteristic of incineration ash was strong alkalinity, the content of silica and alumina as a pozzolanic material was 50.97%, and the average particle size was $5.03{\mu}m$ respectively. When the ash contents as cement additive were varied in 0~15%(wt) of cement weight to explore the effect of the compressive strength on the solidified cement mortar, the proper amount of the incineration ash substituted was about 5~l0%(wt). Therefore we found that using the incineration ash as cement additive obtains the recycling of waste material, the stabilization disposal, the reduction of waste disposal expense, and the protection of environmental problem, too.

Effects of Paper Mill Sludge in submerged Soil (제지(製紙)슬러지의 답토양(畓土壤) 시용효과(施用效果))

  • Choi, Jong Woo;Jo, Jeong Rye;Lee, Kyu Seung;Kim, Moon Kyu
    • Korean Journal of Agricultural Science
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    • v.19 no.2
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    • pp.187-193
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    • 1992
  • The effects of continuous restoration of sludge into the reclamating paddy soil and leaching test of sludge components by soil column were investigated. 1. The contents of nitrogen, phosphorus, potassium, C.E.C. and organic matter(O.M.) were increased in/on the paddy soil treated with paper mill sludge than non-treated. 2. Humic layer depth recognized by color showed the non-treated(10 cm), second year(15 cm) and third year(20 cm), respectively. 3. The effects of sludge treatment showed in the contents of O.M. such as non-treatment(0.9 %) < second year(1.39 %) < third year(1.75 %) in 10 cm depth. 4. All components in soil tested with column were increased by holding capacity of sludge, and the contamination effects of soil and ground water were not found by leaching test.

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