Učinkovitost uklanjanja amonijakalnog dušika iz otpadne vode starog deponija

master's thesis

• Title (english): Efficiency of ammonium removal from old landfill leachate
• Author: Maja Perković
• Mentor: Tibela Landeka Dragičević (mentor)
• Granter: University of Zagreb; Faculty of Food Technology and Biotechnology; (Department of Food Engineering); (Laboratory for the Biological Waste Water Treatment); Zagreb
• Defense date and country: 2010-03, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Biotechnology

Abstract

Koncentracija amonijakalnog dušika (N-NH4) u otpadnoj vodi starog deponija je 308 mg/L. U ovom radu istražena je učinkovitost biološkog uklanjanja amonijakalnog dušika iz otpadne vode starog deponija pomoću mikrobne kulture izdvojene iz otpadne vode tog deponija. Kada je amonijakalni dušik preveden u dušikove okside - nitratni i nitritni dušik (N-NO2 + N-NO3), produžena je aeracija i provedena je potpuna nitrifikacija. Tijekom pokusa zapaženo je značajno nakupljanje nitrita. Pokusi nitrifikacije su provedeni u serum bocama opremljenim sa sustavom za prozračivanje i mjeračima pH, temperature i otopljenog kisika. Brzina oksidacije amonijaka 217,6 mg/L i 49,5 mg/L je iznosila 13,74 mg N-NH4/L,h odnosno 20,13 mg N-NH4/L,h. Za iste početne vrijednosti N-NH4 brzina nitrifikacije je iznosila 9,7 mg NNH4/ L,h odnosno 14,63 mg N-NH4/L,h.

Abstract (english)

Ammonium nitrogen concentration in old landfill leachate was 308 mg/L. In this work biological ammonium nitrogen removal from leachate has been achieved by means of microbial culture originated and cultivated from leachate by enrichment technique. When ammonium is biologically oxidized to nitrite and nitrate (N-NO2 + N-NO3) aeration was extended and full nitrification was performed. Significant accumulation of N-NO2 has been observed during the study. Experiments of nitrification were carried out in serum bottles equipped with aeration system and apparatus for pH, temperature and dissolved oxygen measuring. The ammonium oxidation rate for initial N-NH4 217.6 mg/L and 49.5 mg/L were 13.74 mg N-NH4/L,h and 20.13 mg N-NH4/L,h, respectively. For the same initial N-NH4 concentrations the nitrification rate were 9.7 mg N-NO2+N-NO3/L,h and 14.63 mg N-NO2+N-NO3/L,h.

• Keywords: nitrifikacija; otpadna voda starog deponija
• Keywords (english): landfill leachate; nitrification
• Language: croatian
• URN:NBN: urn:nbn:hr:159:972875
• Study programme: Title: Biotechnology; specializations in: Biochemical-Microbiology; Course: Biochemical-Microbiology; Study programme type: university; Study level: graduate; Academic / professional title: diplomirani inženjer biotehnologije; smjer biokemijsko-mikrobiološki (diplomirani inženjer biotehnologije; smjer biokemijsko-mikrobiološki)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2017-08-29 10:38:17