• Title, Summary, Keyword: alum sludge

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Composting of Sewage Sludge and Llum Sludge (하수슬러지와 Alum 슬러지를 이용한 퇴비화)

  • Chang, Ki Woon;Lim, Jae Shin;Lee, In Bog;Kim, Young Han
    • Journal of the Korea Organic Resources Recycling Association
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    • v.3 no.1
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    • pp.61-71
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    • 1995
  • This study is concerned with the assessment of the possibility of alum sludge composting, as well as changes of some chemical properties during composting. Alum sludge was mixed in different proportions, which are 0%, 25%, 35% and 45%, respectively, with a sewage sludge and sawdust mixture. The final mixtures to be composted are placed on static piles constructed with a perforated aeration pipe on the ground, and composted for more than 50 days. During the composting of some alum sludge treatments, there was not notable difference in changes of pH, C/N ratio, and content of several minerals among the alum sludge treatments, while changes of pile temperatures and CEC were significant and these remarkable differences in related to the pile temperatures and CEC seem suitable for the evaluation of alum sludge maturity. Also, the results suggested that the proper mixing ratio of alum sludge for composting was 25% level.

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Effect of Alum Sludge Compost of Water Treatment Plant on the Growth of Korean Lawngrass (Zoysia japonica Steud.) (정수장 슬러지 퇴비가 한국잔디(zoysia japonica Steud)의 생육에 미치는 영향)

  • 함선규;이정재;장기운;박재선
    • Asian Journal of Turfgrass Science
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    • v.8 no.2
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    • pp.93-100
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    • 1994
  • This experiment was carried our in order to study effect of alum sludge compost of water treat-ment plant on the growth of Korean lawngrass (zoysia japonica Steud.) and on the change of soil chemical properties. Alum sludge compost was made out of chicken feces, sawdust and alum sludge. The results obtained are summarized as follows : 1. Alum sludge compost was appropriate for organic fertilizer of turfgrass management in golf course. 2.Application of alum sludge compost improved the chemical properties of soil such as pH, available phosphorous and exchangeable calcium. Also the growth of Korean lawngrass grown by the mixed application of alum and compost was more effective than that in single application of compost. 3.Chlorophyll content of Korean lawngrass had no differences in several treatments. 4. Alum promoted the uptake of potassium, calcium and the yield of dry weight hut the yield of dry weight was not affected by chemical fertilizer. 5.Alumimum toxicity was decreased by the mixed application of alum and compost but increased by single application of alum.

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A Study on Alum recovery and reuse from the sludge in water treatment plant. (상수도 정수장 오이중 Alum회수 및 재활용에 관한 연구)

  • 김관천;노기환;강영식;이치영;류일광
    • Journal of environmental and Sanitary engineering
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    • v.10 no.1
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    • pp.86-96
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    • 1995
  • Alum recovery has recently gained more attention because many water utilities need to improve their sludge handling and disposal practices. As part of an overall sludge management program recovery can reduce the amount of solids and allow for reuse of the recovered Alum as a coagulant. This study was examined the effectiveness of Alum recovery from the Sludge at the D water treatment plant in Kwangju city. The results were summarized as follows 1. Alum recovery was obtained sufficiently acidification(An optimum condition was pH2-3) With $H_{2}SO_{4}$ to settled sludge. In this case recovered liquid Alum from sludge of 2.1% solids concentration at pH 2.1 was contains Aluminum $1,602mg/{\ell}$(as $Al_{2}O_{3}$ 0.3% ) and other metal of low level. 2. It was an optimum condition to all reuse of recovered Alum as a coagulant that rate of Commercial Alum:Recovered Alum=$14{\mu}{\ell}/{\ell}{\;}:{\;}200{\mu}{\ell}/{\ell}$ In a result of Jar Tests. 3. It was a result of Alum recovery from sludge, the reduction effect of amount of solids was about 57.4%. 4. If all recovered Alum were reused the reduction effect of solid wastes disposal cost and chemical drug's cost was about 22%.

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Effects of Alum Sludge Application on the Growth of Forage Sorghum ( Sorghum bicolor X S. bicolor ) (사료용 수수 ( Sorghum bicolor X S. bicolor ) 생육에 대한 정수 슬러지 ( alum sludge ) 의 시용효과)

  • 김상덕;장기운;임재신;김영한
    • Journal of The Korean Society of Grassland and Forage Science
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    • v.17 no.1
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    • pp.51-58
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    • 1997
  • An experiment of alum sludge application was carried out on a mountainous site, to know its effect on the growth of forage sorghum hybrid, Pioneer 93 1 (Sorghum bicolor x S. bicolor). When alum sludge with 80% water content was applied at the level of 133 ton per ha, the effect of the application on the growth of Pioneer 931 was much smaller than that of chemical fertilizer. But Eresh yield of the forage, with the sludge application, was greater than that without fertilizer when the soil is not fertile. But when the soil was comparatively fertile, the sludge application gave an adverse affect on the growth of the forage plant. The content of exchangeable K in the soil has a very close positive relation with the Eresh yield and plant height of the plant, while that of exchangeable Ca has a close negative relation with those growing factors. There was a tendency of yield decrease of the forage plant, when alum or compost was applied with NPK to the comparatively infertile soil especially for alum sludge. As a result, when soil is not fertile more attention will be necessary for applying alum sludge with chemical fertilizers. But to soil with better fertility, it is recommended to use alum sludge with chemical fertilizer to obtain more yield of the forage plant.

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Effect of Water Treatment Sludge Application on the Growth of Korean Local Corn(Zeas Mays L.) (옥수수에 대한 정수 슬러지(Alum sludge)의 시용효과와 Aluminum이 옥수수의 유식물 생장에 미치는 영향)

  • Chang, Ki Woon;Koo, Ja Kong;Lim, Jae Shin;Kim, Young Han
    • Journal of the Korea Organic Resources Recycling Association
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    • v.3 no.1
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    • pp.73-83
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    • 1995
  • Effect of water treatment sludge(alum sludge) application on the growth of Korea local corn(Zeas Mays L.) was evaluated and phytotoxicity of alum sludge on the growth of corn roots and plant height was tested. Alum sludge itself and composted alum sludge compost were applicated by 1500kg/ha in the plot respectively. For the fertility test, yield, chlorophyll content, plant height of corn treated by alum sludge and composted alum sludge were better than that of control. No clear toxixity of alum sludge was found. At the food chemical analyses of seed corn, no obvious component variation were evaluated either. Test of pH effect on phytotoxicity of alum sludge on corns showed that plant height and root growth of corns were inhibited at low pH 4 solution. Phytotoxicity test of alum sludge extract which was extracted at various pH solutions, showed that growth and cations uptake inhibition were found the more serious the lower the pH. Plant height and root growth injury were serious at higher than 100ppm Al content solution.

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Effects of Alum Sludge Application on Root Growth of Forage Sorghum (Sorghum bicolor$\times$ S. bicolor) Cultivated in Mountainous Kumsan District

  • Kim, Sangdeog A.;Chang, Ki-Woon
    • Journal of The Korean Society of Grassland and Forage Science
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    • v.20 no.2
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    • pp.85-90
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    • 2000
  • Forage sorghum (Sorghum bicolor x S. bicolor) was cultivated for knowing the effect of alum sludge application on its root growth in a mountainous site, Kumsan. And the results obtained are as follows: The available P205 content in the soil seemed to decrease with the advance of level of alum sludge application. And plant P content decreased with the advance of sludge application without phosphate fertilizer. With phosphate fertilizer, root number of the forage was greater than that without the fertilizer. The root growth of forage sorghum was the highest with NPK and the least in control and alum application, and it is not recommended to apply NPK and alum together for the growth of the forage root. (Key words : Root, Sorghum, Mineral, Sludge, Kumsan)

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A Study on the Artificial Culture Soil Using Alum Sludge (정수장슬러지(Alum sludge)를 이용한 인공배양토 개발에 관한 연구)

  • Koo, Ja-Kong;Lim, Jae-Shin;Moon, Yong-Taik;Lee, In-Bog
    • Journal of the Korea Organic Resources Recycling Association
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    • v.7 no.1
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    • pp.1-12
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    • 1999
  • The objective of this study is to improve the function of an artificial culture soil which was mixed mainly with alum sludge. The artificial culture soil was more efficient than the commercial culture soil for the growth of perennial ryegrass and bush clover. Artificial culture soil was prepared paper sludge(40%), alum sludge(30%), sewage sludge(20%), and compost (10%). This artificial culture soil had no adverse effect on phytotoxicity tests. The alum sludge gives some water holding capacity and cohesion strength to the soil enought to require no other addition of adhesive agents. The leaching of aluminum from the alum sludge was negligible even at very low pH(=2) due to the mixed compost.

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Anaerobic Digestion Biochemical Sludge Produced from Municipal Sewage Treatment Process (하수처리시설에서 발생된 약품 잉여슬러지의 혐기성 소화 특성)

  • Cho, Sang Sun;Kang, Ho;Lim, Bong Su
    • Journal of Korean Society of Environmental Engineers
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    • v.36 no.8
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    • pp.561-569
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    • 2014
  • This study was carried out to get the characteristics of anaerobic digestion for chemical/biological sludge produced from municipal sewage treatment plant for phosphorus. Anaerobic mesophilic batch tests showed that the ultimate biodegradability of waste activated sludge showed 31%, PACl sludge 24%, Alum sludge 26%, respectively. At the S/I 1.0, 75% of total biodegradable volatile solids (TBVS) of waste activated sludge was degraded with an initial rapid decay coefficient, k1 of $0.1129day^{-1}$ and 74% of TBVS of PACl sludge with k1 of $0.0998day^{-1}$, and 76% of TBVS of Alum sludge with k1 of $0.1091day^{-1}$ for 20 days. During the operation of SCFMRs, the 3 reactor (Control, PACl, Alum) pH maintained 6.7~7.0 and the reactor alkalinity maintained 1,800~ 2,200 mg/L as $CaCO_3$. The average biogas production rates of SCFMRs fed with PACl sludge and Alum sludge were 0.089 v/v-d and 0.091 v/v-d, respectively, which was 27~28% lower than that of the control (0.124 v/v-d) at an HRT (hydraulic retention times) of 20 days. And the methane content during the operation ranged 70~76% in 3 reactor. The average TVS removal efficiency of SCFMRs fed with PACl sludge and Alum sludge were 19.6% and 19.9%, respectively, at an HRT of 20 days, which showed 4% lower than that of the control (23.8%). The average BVS removal efficiency of SCFMRs fed with PACl sludge and Alum sludge were 25.8% and 26.9%, respectively, at an HRT of 20 days, which was 8~9% lower than that of the control (34.5%).

pH Buffer Capacity and Acidification Resistance of Alum Paper Mill Sludge (Alum 제지슬러지의 pH 완충능과 산성화저항성)

  • Lee, In-Bog;Chang, Ki-Woon
    • Korean Journal of Soil Science and Fertilizer
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    • v.32 no.1
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    • pp.1-6
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    • 1999
  • To find the latent effect of paper mill sludges (PMS) with and without alum, and alum paper mill sludge compost(PMSC) on aluminum toxicity of crops, the pH buffer capacity and the acidification resistance index (ARI) for PMSs and PMSC were investigated, comparing to upland soil. Buffer capacities of PMS with and without alum, and PMSC were significantly higher than $2.5cmol^+kg^{-1}$ of check soil as 137, 250, and $147cmol^+kg^{-1}$, respectively. Owing to such high buffer capacity of PMS and PMSC, they showed to be well-resisted to acidification.

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LAND FARMING OF WATER PLANT ALUM SLUDGE ON ACID MINERAL SOIL AFFECTED BY ACID WATER

  • Lee, Seung-Sin;Kim, Jae-Gon;Moon, Hi-Soo;Kang, Il-Mo
    • Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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    • pp.182-186
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    • 2001
  • An acid forest surface soil as a land farming medium was treated with a water plant alum sludge at 0 to 18%. Indian mustard was grown in the treated soil in a greenhouse for 5 weeks and watered with pH 4 tap water adjusted with a mixed acid (1HNO$_3$: 2H$_2$SO$_4$) during plant growth. Changes in soil property, leachate chemistry, plant growth, and plant uptake of elements by the sludge treatment were determined. The alum sludge treatment increased buffer capacity to acidity, hydraulic conductivity, water holding capacity, and phosphate adsorption of the soil and decreased bulk density and mobility of small particles. The sludge treatment reduced leaching of Al, Mg, K, Na, and root elongation. Plant did uptake less amount of the cations and P but more Ca with the sludge treatment.

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