Coagulation-Flocculation and Air Stripping as a Pretreatment of Young Landfill Leachate~!2010-02-12~!2010-03-24~!2010-05-11~!

Yilmaz, Tuba; Apaydin, Selami; Berktay, Ali

doi:10.2174/1874829501003010042

Cited by 23 publications

(8 citation statements)

References 24 publications

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“…It is possible that leachates contain colossal amounts of organic matter in the forms of biodegradable and biorefractory carbon, nitrogen (bio-nitrogen, ammonia, and nitrate nitrogen), heavy metals and etc. [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

Attenuation of municipal landfill leachate through land treatment

Pazoki

Abdoli

Karbassi

et al. 2014

J Environ Health Sci Engineer

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The treatment of municipal landfill’s leachate is considered as one of the most significant environmental issues. In this study a laboratory experiment was conducted through land treatment, achieving an efficient and economical method by using Vetiver plant. Moreover, the effects of land treatment of leachate of municipal landfills on the natural reduction of organic and inorganic contaminants in the leachate after the pre-treatment in the Aradkouh disposal center are invested. Three pilots including the under-investigation region’s soil planted by Vetiver plant, the region’s intact soil pilot and the artificial composition of the region’s soil including the natural region’s soil, sand, and rock stone are used. The leachate, having passed its initial treatment, passed through the soil and to the pilot. It was collected in the end of the pilots and its organic and inorganic contaminants were measured. However, the land treatment of leachate was conducted in a slow rate at various speeds. According to the results, in order to remove COD, BOD5, TDS, TSS, TOC the best result was obtained in the region’s soil planted with Vetiver plant and at the speed of 0.2 ml per minute which resulted 99.1%, 99.7%, 52.4%, 98.8%, 94.9% removal efficiencies, respectively. It also can be concluded that the higher the organic rate load is, the lower the efficiency of the removal would be. In addition, EC & pH were measured and the best result was obtained in the region’s soil planted with Vetiver plant and at the speed of 0.2 ml/min.

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Section: Introductionmentioning

confidence: 99%

Attenuation of municipal landfill leachate through land treatment

Pazoki

Abdoli

Karbassi

et al. 2014

J Environ Health Sci Engineer

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“…The disposal and compaction of MSW in landfills facilitate development of facultative and anaerobic conditions that support the decomposition of landfilled wastes. Hence, leachates of diverse compositions are generated, depending on landfill construction, operational practices, age, landfill method, prevailing climatic and hydrogeological conditions, and surface water ingress into the facility (Aloui et al, 2009;Campbell, 1993;Chen, 1996;Lee et al, 2010;Yilmaz et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of effluents from bench-scale treatment combinations for landfill leachate in Ibadan, Nigeria

Aluko

Sridhar

2014

Waste Manag Res

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The removal of pollutants in landfill leachate was investigated using constructed wetlands, a trickling filter, alum flocculation and coagulation, and a sequencing batch reactor in various combinations. Thirteen combined operations were investigated involving three out of the four unit treatment methods in series. The study was conducted because unit operations, though achieved reductions in pollutants concentrations had effluent values above the national regulatory guideline values. The suspended solids of effluents were permissible in most treatment processes, while reductions in 5-day biochemical oxygen demand (BOD5), chemical oxygen demand (COD) and ammonia (NH3) of leachates ranged from 80% to 97%; 86% to 97% and 92% to 98% respectively. However, there were significant increases in nitrate (85%) and dissolved oxygen of treatment (218%). In addition, the characteristics of the recommended treatment sequence, involving constructed wetlands, alum and trickling filter produced effluents with reductions in colour (97%), alkalinity (97%), BOD (97%), COD (97%) and NH3 (98%), and in metals, except nickel (29% reduction from the influent values). The recommended treatment combination is suitable for effective leachate management at the landfill. The cost of constructing and operating the recommended treatment combination at the facility, for 5 years, would be NGN6,009,750.00 ($38,036.39). The performance should be monitored on site prior to full adoption if effluent characteristics remain consistently low over dry and wet seasons.

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“…The degradation of the organic fraction of the municipal solid waste in landfill in combination with the percolation of rain water produces a liquid called leachate. One of the main problems with the solid waste landfill sites is leachate depending on large amounts of organic matter, ammonia nitrogen, heavy metals, and chlorinated organic and inorganic salts [2]. Leachate has a complex structure and high pollutant load, and its treatment is quite hard to meet the discharge standards.…”

Section: Introductionmentioning

confidence: 99%