Use of combined coagulation-adsorption process as pretreatment of landfill leachate

Journal of Environmental Health Science Engineering

Subramaniam Kanmani¹  Puthiya Veetil Nidheesh¹  Nalladurai Jegan Durai¹  Rajan Gandhimathi¹ 

[1] Department of Civil Engineering, National Institute of Technology, Tiruchirappalli, Tamil Nadu, India

关键词: COD;    Leachate;    Landfill;    Adsorption;    Coagulation;   

Others  :  820862
DOI  :  10.1186/1735-2746-10-24

 received in 2013-03-11, accepted in 2013-03-16,  发布年份 2013

【 摘 要 】

Landfill leachate is an important pollution factor resulting from municipal landfill sites. Physical and chemical processes are the better option for pretreatment or full treatment of landfill leachate. This article presents a combination of pre-treatment method (coagulation and adsorption) for leachate collected from municipal solid waste open dumping site. Physico chemical characteristics of stabilized and fresh leachate were examined. Coagulation process was examined by using alum and ferric chloride. A low cost adsorbent, fly ash was used for adsorption studies. Coagulation studies were carried out for fresh and stabilized leachate. Adsorption studies have been conducted for alum pre-treated stabilized leachate. Effect of coagulant dose, adsorbent dose, pH and contact time were carried out. The effective optimum coagulant dosages were 0.6 g/L and 0.7 g/L for alum and ferric chloride respectively for stabilized leachate and incase of fresh leachate 0.8 g/L and 0.6 g/L for alum and ferric chloride respectively. For the alum pretreated stabilized leachate, the maximum COD removal is 28% using fly ash adsorbent with equilibrium time of 210 min and optimum dose of 6 g/L. Overall COD removal efficiency of 82% was obtained by coagulation using alum and adsorption using fly ash for stabilized leachate. The results obtained showed that combined coagulation and adsorption process can be used effectively for stabilized leachate treatment.

【 授权许可】

   
2013 Gandhimathi et al.; licensee BioMed Central Ltd.

【 图 表 】

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【 参考文献 】

• [1]Papastavrou C, Mantzavinos D, Diamadopoulos E: A comparative treatment of stabilized landfill leachate: Coagulation and activated carbon adsorption vs. electrochemical oxidation. Environ Technol 2009, 30(14):1547-1553.
• [2]Amir T, Ismail N, Alkarkhi AFM, Teng TT: Optimization of Coagulation Process for Landfill Leachate Pre-Treatment Using Response Surface Methodology (RSM). J Sust Develop 2009, 2(2):159-167.
• [3]Ghafari S, Aziz HA, Bashir MJK: The use of poly-aluminum chloride and alum for the treatment of partially stabilized leachate: A comparative study. Desalination 2010, 257:110-116.
• [4]Tatsi AAA, Zouboulis AI, Matis KA, Samaras P: Coagulation-Flocculation Pretreatment of Sanitary Landfill Leachates. Chemosphere 2003, 53:737-744.
• [5]Ilhan F, Kurt U, Apaydin O, Gonullu MT: Treatment of leachate by electrocoagulation using aluminum and iron electrodes. J Hazard Mater 2008, 154:381-389.
• [6]Renou S, Givaudan JG, Poulain S, Dirassouyan F, Moulin P: Landfill leachate treatment: Review and Opportunity. J Hazard Mater 2008, 150:468-493.
• [7]Ghafari S, Aziz HA, Bashir MJK: Coagulation Process for Semi-Aerobic Leachate Treatment Using Poly-Aluminum Chloride. Malaysia: AEESEAP International Conference 2005, University of Malaya;
• [8]Deng Y, Englehardt JD: Electrochemical oxidation for landfill leachate treatment. Waste Manage 2007, 27(3):380-388.
• [9]Li W, Zhou Q, Hua T: Removal of Organic Matter from Landfill Leachate by Advanced Oxidation Processes: A Review. Int J Chem Eng 2010, 2010:1-10.
• [10]Mohan S, Gandhimathi R: Removal of heavy metal ions from municipal solid waste leachate using coal fly ash as an adsorbent. J Hazard Mater 2009, 169:351-359.
• [11]Samadi MT, Saghi MH, Rahmani A, Hasanvand J, Rahimi S, Shirzad Syboney M: Hamadan landfill leachate treatment by coagulation-flocculation process. Iranian J Environ Health Sci Eng 2010, 7(3):253-258.
• [12]Zazouli MA, Yousefi Z, Eslami A, Ardebilian MB: Municipal solid waste landfill leachate treatment by Fenton, photo-Fenton and Fenton-like processes: Effect of some variables. Iranian J Environ Health Sci Eng 2012, 9:3.
• [13]Li W, Hua T, Zhou Q, Zhang S, Li F: Treatment of stabilized landfill leachate by the combined process of coagulation/flocculation and powder activated carbon adsorption. Desalination 2010, 264:56-62.
• [14]Luna Y, Otal E, Vilches LF, Vale J, Querol X, Pereira CF: Use of zeolitised coal fly ash for landfill leachate treatment: a pilot plant study. Waste Manage 2006, 27:1877-1883.
• [15]APHA: Standard methods for the examination of water and wastewater. 17th edition. Washington, D.C.: American Public Health Association; 1998.
• [16]El-Fadel M, Bou-Zeid E, Chahine W, Alayli B: Temporal variation of leachate quality from pre-sorted and baled municipal solid waste with high organic and moisture content. Waste Manage 2002, 22:269-282.
• [17]Al-Yaqout AF, Hamoda MF: Evaluation of landfill leachate in arid climate-a case study. Environ Int 2003, 29:593-600.
• [18]Benfield LD, Weand BL, Judkins JF: Process chemistry for water and wastewater. New Jersey: Prentice Hall Inc, Englewood Cliffs; 1982.
• [19]Binnie C, Smethurst G, Kimber M: Basic Water Treatment. London: Thomas Telford Publishing; 2003.
• [20]Bello OS, Adelaide OM, Hammed MA, Popoola OAM: Kinetic and Equilibrium Studies of Methylene Blue Removal from Aqueous Solution by Adsorption on Treated Sawdust. Maced J Chem Chem En 2010, 29:77-85.
• [21]Namasivayam C, Kavitha D: Removal of Congo red from Water by Adsorption onto Activated Carbon Prepared from Coir Pith, An Agricultural Solid Waste. Dyes Pigm 2002, 54:47-58.