Comparison between Biological Treatment and Chemical Precipitation for Nitrogen Removal from Old Landfill Leachate

Abstract

Abstract:The study reports the results of a laboratory scale investigation aimed at evaluating the effectiveness of mature municipal landfill leachate treatment by a biological stage (used SBBR as a biological treatment) and Chemical precipitation (Used MAP precipitation (magnesium ammonium phosphate)) to study the nitrogen removal capabilities for treatment of sanitary landfill leachate containing high ammonia concentration, and the comparison between them. The monitored sample taken from the Chang Sheng bridge landfill site in Chongqing city-China, has its concentrations of COD, BOD 5 , and NH 3 -N about 1650, 75 and 1100 mg/l respectively. The results from SBBR showed that after two months long period of domestication and one month period of stability, the ammonia nitrogen removal efficiency reached to 99% in the SBBR reactor, at nitrogen loading rate 0.51 kg TN/m 3 per day and HRT was 9 hours, met to Chinese standards for discharge. The results of the MAP precipitation was technically effective to remove the high NH 3 -N strength of over 1100 mg/l from the raw leachate at molar ratio of Mg 2+ : NH 4 + : PO 4 -3 of 1:1:1, they demonstrated a very satisfactory removal of ammonia; an initial NH 3 + -N concentration of 1100 mg/l contained in the raw leachate was quickly reduced to 28 mg/l within 15 min, while the pH producing a maximum removal of ammonia was 9.0. The percent removal of ammonia after treatment by MAP was 97.5%.

An Investigation of the Effects of a Solid Waste Landfill on the Quality of Groundwater Wells in the Benghazi, Qanfouda Region

“…A highly concentrated, complicated wastewater known as solid waste comprises dissolved organic matter as well as inorganic substances like ammonium, calcium, magnesium, sodium, potassium, iron, sulfates, and chlorides. The heavy metals cadmium, chromium, lead, and zinc were found in high proportions in the salt we investigated for our research(Ogundiran et al, 2008;Tengrui and Long, 2007). Which demonstrates that due to the physical, chemical, and microbiological processes that occur in sedimentary waste, each is present in varying amounts(Aziz et al, 2010).…”

Assessment Impact of Solid Wastewater on Groundwater Samples in Ganfouda Area Located in Benghazi City

“…the landfill A highly concentrated, complicated wastewater known as solid waste comprises dissolved organic matter as well as inorganic substances like ammonium, calcium, magnesium, sodium, potassium, iron, sulphates, and chlorides (Slomczynska and Slomczynski, 2004). The heavy metals cadmium, chromium, lead, and zinc were found in high proportions in the salt we investigated for our research (Ogundiran and Afolabi, 2008;Tengrui, 2007). Some researchers which demonstrates that due to the physical, chemical, and microbiological processes that occur in sedimentary waste, each is present in varying amounts (Aziz, 2010).…”

Studi Efisiensi Penyisihan COD dalam Lindi dengan Sistem Evapotranspirasi Menggunakan Tumbuhan Sente (Alocasia macrorrhiza) dan Rumput Belulang (Eleusine indica)

“…Secara jangka panjang konsentrasi amonium dan organik merupakan komponen yang paling signifikan dalam lindi (Tengrui et al, 2007).…”

“…Lindi yang berasal dari TPA secara umum dapat mengandung sejumlah besar material organik (yang mudah didegradasi dan juga yang sulit didegradasi), COD merupakan salah satu parameter dasar dalam lindi yang menjadi perhatian (Abbas et al, 2009, Tengrui, et al, 2007. Sistem pengolahan lindi dapat berupa sistem fisik-kimia dan sistem biologis.…”