IMMOBILIZATION OF MICROBIAL MIXED CULTURE AND ITS ACTIVITIES IN REDUCING ORGANIC CONTENT IN DOMESTIC WASTEWATER

Domestic wastewater that contains organic compounds can potentially pollute the environment and cause eutrophication if not treated. One effort to reduce the organic content of wastewater is to use WWTP which utilizes biological processes. The biological process is good consider because the organic...

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Main Author: Ganjar Prabowo, Himawan
Format: Theses
Language:Indonesia
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Online Access:https://digilib.itb.ac.id/gdl/view/46952
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Institution: Institut Teknologi Bandung
Language: Indonesia
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spelling id-itb.:469522020-03-13T13:20:18ZIMMOBILIZATION OF MICROBIAL MIXED CULTURE AND ITS ACTIVITIES IN REDUCING ORGANIC CONTENT IN DOMESTIC WASTEWATER Ganjar Prabowo, Himawan Teknik saniter dan perkotaan; teknik perlindungan lingkungan Indonesia Theses organic content, HRT, immobilized microbes, domestic wastewater INSTITUT TEKNOLOGI BANDUNG https://digilib.itb.ac.id/gdl/view/46952 Domestic wastewater that contains organic compounds can potentially pollute the environment and cause eutrophication if not treated. One effort to reduce the organic content of wastewater is to use WWTP which utilizes biological processes. The biological process is good consider because the organic content of wastewater can be useful for microbial growth, inexpensive and does not produce harmful byproducts. In addition to using suspended microbes, water treatment at WWTP also uses microbial immobilization. The use of immobilized microbes is considered to have advantages, namely high cell concentration and being able to interact with extreme environments. In this study microbial immobilization was made with the aim of reducing organic content from domestic wastewater, with 3 variations of the use of microbes as much as 3 g, 6 g, and 9 g. The results showed that reactors with microbes of 3 g, 6 g and 9 g were able to reduce the organic content of COD with efficiencies of 81.3%, 87.5%, and 87.5%; BOD of 83.96%, 93.75% and 93.34%; and ammonia of 71.14%, 75.31% and 78.29%. To explain the reaction that occurs in batch-recirculation reactors, several kinetics models are used, namely first order, second order, and Singh. Of the three kinetics models, Singh's kinetic has the closest with saturation constant value (k) of k1 (3 g) = 0.4111, k1 (6 g) = 0.5254, and k1 (9 g) = 0.4762. Under continuous conditions using 6 g of immobilized microbes, the variation of COD concentration of wastewater is between 160 - 512 mg / L, ammonia 9.8 - 25.2 mg / L and total phosphate 1.57 - 4.76 mg / L and HRT 1 , 2, and 3 days the value of the removal efficiency was COD of 65.63% - 80%, ammonia removal between 50% - 80.51%, and total phosphate 32.14% - 60.06%. Meanwhile, to illustrate the processes that occur in a continuous reactor the Stover-Kincanon kinetic model gives better results than the first order and second order models. With saturation constant (KB) and the use of the maximum utilization rate substrate (Umax) is KB = 65.65 g / L. day, Umax = 10.63 g / L. day (variation 1); KB = 50.10 g / L. day, Umax = 6.14 g / L. day (variation 2), and KB = 86.85 g / L. day, Umax = 13.23 g / L. day (variation 3). text
institution Institut Teknologi Bandung
building Institut Teknologi Bandung Library
continent Asia
country Indonesia
Indonesia
content_provider Institut Teknologi Bandung
collection Digital ITB
language Indonesia
topic Teknik saniter dan perkotaan; teknik perlindungan lingkungan
spellingShingle Teknik saniter dan perkotaan; teknik perlindungan lingkungan
Ganjar Prabowo, Himawan
IMMOBILIZATION OF MICROBIAL MIXED CULTURE AND ITS ACTIVITIES IN REDUCING ORGANIC CONTENT IN DOMESTIC WASTEWATER
description Domestic wastewater that contains organic compounds can potentially pollute the environment and cause eutrophication if not treated. One effort to reduce the organic content of wastewater is to use WWTP which utilizes biological processes. The biological process is good consider because the organic content of wastewater can be useful for microbial growth, inexpensive and does not produce harmful byproducts. In addition to using suspended microbes, water treatment at WWTP also uses microbial immobilization. The use of immobilized microbes is considered to have advantages, namely high cell concentration and being able to interact with extreme environments. In this study microbial immobilization was made with the aim of reducing organic content from domestic wastewater, with 3 variations of the use of microbes as much as 3 g, 6 g, and 9 g. The results showed that reactors with microbes of 3 g, 6 g and 9 g were able to reduce the organic content of COD with efficiencies of 81.3%, 87.5%, and 87.5%; BOD of 83.96%, 93.75% and 93.34%; and ammonia of 71.14%, 75.31% and 78.29%. To explain the reaction that occurs in batch-recirculation reactors, several kinetics models are used, namely first order, second order, and Singh. Of the three kinetics models, Singh's kinetic has the closest with saturation constant value (k) of k1 (3 g) = 0.4111, k1 (6 g) = 0.5254, and k1 (9 g) = 0.4762. Under continuous conditions using 6 g of immobilized microbes, the variation of COD concentration of wastewater is between 160 - 512 mg / L, ammonia 9.8 - 25.2 mg / L and total phosphate 1.57 - 4.76 mg / L and HRT 1 , 2, and 3 days the value of the removal efficiency was COD of 65.63% - 80%, ammonia removal between 50% - 80.51%, and total phosphate 32.14% - 60.06%. Meanwhile, to illustrate the processes that occur in a continuous reactor the Stover-Kincanon kinetic model gives better results than the first order and second order models. With saturation constant (KB) and the use of the maximum utilization rate substrate (Umax) is KB = 65.65 g / L. day, Umax = 10.63 g / L. day (variation 1); KB = 50.10 g / L. day, Umax = 6.14 g / L. day (variation 2), and KB = 86.85 g / L. day, Umax = 13.23 g / L. day (variation 3).
format Theses
author Ganjar Prabowo, Himawan
author_facet Ganjar Prabowo, Himawan
author_sort Ganjar Prabowo, Himawan
title IMMOBILIZATION OF MICROBIAL MIXED CULTURE AND ITS ACTIVITIES IN REDUCING ORGANIC CONTENT IN DOMESTIC WASTEWATER
title_short IMMOBILIZATION OF MICROBIAL MIXED CULTURE AND ITS ACTIVITIES IN REDUCING ORGANIC CONTENT IN DOMESTIC WASTEWATER
title_full IMMOBILIZATION OF MICROBIAL MIXED CULTURE AND ITS ACTIVITIES IN REDUCING ORGANIC CONTENT IN DOMESTIC WASTEWATER
title_fullStr IMMOBILIZATION OF MICROBIAL MIXED CULTURE AND ITS ACTIVITIES IN REDUCING ORGANIC CONTENT IN DOMESTIC WASTEWATER
title_full_unstemmed IMMOBILIZATION OF MICROBIAL MIXED CULTURE AND ITS ACTIVITIES IN REDUCING ORGANIC CONTENT IN DOMESTIC WASTEWATER
title_sort immobilization of microbial mixed culture and its activities in reducing organic content in domestic wastewater
url https://digilib.itb.ac.id/gdl/view/46952
_version_ 1821999744667353088