Forest Industry Anaerobic Wastewater Treatment and its Future Development

1985 ◽  
Vol 17 (1) ◽  
pp. 265-270
Author(s):  
Juhani Orivuori
Keyword(s):  
Wastewater Treatment ◽  
Private Enterprise ◽  
Anaerobic Treatment ◽  
Full Scale ◽  
Forest Industry ◽  
Anaerobic Wastewater Treatment ◽  
Recent Developments ◽  
Fast Development ◽  
Future Demands

Very few methods have been developed with such speed as anaerobic wastewater treatment. Universities, Government agencies, private enterprise and scientists all over the world are using millions of dollars in studies, pilot and full scale experiments trying to find the most practical anaerobic treatment systems for various wastewaters. The follow-up alone of all the information published in this field would require an institute of its own. Commercial interests are driving private enterprise to fast development of full scale treatment plants. In this paper the reasons for this interest in anaerobic treatment are focused on in the light of the recent developments in knowledge of the quality and quantity of forest industry wastewaters. Future wastewater characteristics and the possibility of anaerobic treatment to meet future demands are discussed. The need for co-operation between forest industry process engineers and wastewater treatment specialists is emphasized in order to optimize internal and external pollution control methods.

New Technologies for Anaerobic Wastewater Treatment

1986 ◽  
Vol 18 (12) ◽  
pp. 41-53 ◽  
Author(s):  
Look Hulshoff Pol ◽  
Gatze Lettinga
Keyword(s):  
Wastewater Treatment ◽  
New Technologies ◽  
Anaerobic Treatment ◽  
Full Scale ◽  
Upflow Anaerobic Sludge Blanket ◽  
Anaerobic Sludge ◽  
Anaerobic Wastewater Treatment ◽  
Start Up ◽  
Uasb Reactors ◽  
Sludge Granulation

Presently anaerobic wastewater treatment is becoming an accepted simple technology for the treatment of a variety of wastewaters. Of the different treatment systems that have been developed the UASB process (Upflow Anaerobic Sludge Blanket) has found the widest application. Almost all of the more than 60 full scale UASB reactors in operation now, are running satisfactorily. The excellent sludge retention generally found in UASB-reactors is obtained by sludge granulation, which can be seen as a sludge immobilization process. The presently available insight into the sludge granulation process is briefly presented, together with the strategy to be applied for performing a proper first start-up and secondary start-up of UASB reactors, viz. using granular seed sludge. The effect of the presence of SS with regard to the loading potentials of anaerobic treatment systems will be discussed. The experiences obtained with some full scale applications of the UASB-process are presented.

Anaerobic Treatment Kinetics: Discussers' Report

1991 ◽  
Vol 24 (8) ◽  
pp. 61-78 ◽  
Author(s):  
S. R. Harper ◽  
M. T. Suidan
Keyword(s):  
Mathematical Modeling ◽  
Wastewater Treatment ◽  
Microbial Growth ◽  
Anaerobic Treatment ◽  
Anaerobic Wastewater Treatment ◽  
Biomass Characterization ◽  
Recent Developments ◽  
Biochemical Mechanisms ◽  
Wastewater Treatment Systems ◽  
Reactor Hydrodynamics

A discussion of principles guiding the experimental elucidation of microbial growth and substrate utilization kinetics, and the development of mathematical models for anaerobic wastewater treatment systems, is presented. Recent developments in the areas of anaerobic treatment microbiology (including biomass characterization), biochemical mechanisms, microbial growth dyamics, reactor hydrodynamics, and mathematical modeling approaches are presented and explored.

scholarly journals Methanogenic Microorganisms in Industrial Wastewater Anaerobic Treatment

Processes ◽  
2020 ◽  
Vol 8 (12) ◽  
pp. 1546
Author(s):  
Monika Vítězová ◽  
Anna Kohoutová ◽  
Tomáš Vítěz ◽  
Nikola Hanišáková ◽  
Ivan Kushkevych
Keyword(s):  
Wastewater Treatment ◽  
Industrial Wastewater ◽  
Methanogenic Archaea ◽  
High Strength ◽  
Anaerobic Treatment ◽  
Microbiome Composition ◽  
Anaerobic Wastewater Treatment ◽  
The Past ◽  
Anaerobic Reactors ◽  
Anaerobic Environment

Over the past decades, anaerobic biotechnology is commonly used for treating high-strength wastewaters from different industries. This biotechnology depends on interactions and co-operation between microorganisms in the anaerobic environment where many pollutants’ transformation to energy-rich biogas occurs. Properties of wastewater vary across industries and significantly affect microbiome composition in the anaerobic reactor. Methanogenic archaea play a crucial role during anaerobic wastewater treatment. The most abundant acetoclastic methanogens in the anaerobic reactors for industrial wastewater treatment are Methanosarcina sp. and Methanotrix sp. Hydrogenotrophic representatives of methanogens presented in the anaerobic reactors are characterized by a wide species diversity. Methanoculleus sp., Methanobacterium sp. and Methanospirillum sp. prevailed in this group. This work summarizes the relation of industrial wastewater composition and methanogen microbial communities present in different reactors treating these wastewaters.

scholarly journals A Novel Model with GA Evolving FWNN for Effluent Quality and Biogas Production Forecast in a Full-Scale Anaerobic Wastewater Treatment Process

Complexity ◽  
2019 ◽  
Vol 2019 ◽  
pp. 1-13
Author(s):  
Zehua Huang ◽  
Renren Wu ◽  
XiaoHui Yi ◽  
Hongbin Liu ◽  
Jiannan Cai ◽  
...  
Keyword(s):  
Neural Network ◽  
Wastewater Treatment ◽  
Treatment Process ◽  
Biogas Production ◽  
Anaerobic Treatment ◽  
Production Rates ◽  
Wastewater Treatment Process ◽  
Effluent Quality ◽  
Anaerobic Wastewater Treatment ◽  
Novel Model

The anaerobic treatment process is a complicated multivariable system that is nonlinear and time varying. Moreover, biogas production rates are an important indicator for reflecting operational performance of the anaerobic treatment system. In this work, a novel model fuzzy wavelet neural network based on the genetic algorithm (GA-FWNN) that combines the advantages of the genetic algorithm, fuzzy logic, neural network, and wavelet transform was established for prediction of effluent quality and biogas production rates in a full-scale anaerobic wastewater treatment process. Moreover, the dataset was preprocessed via a self-adapted fuzzy c-means clustering before training the network and a hybrid algorithm for acquiring the optimal parameters of the multiscale GA-FWNN for improving the network precision. The analysis results indicate that the FWNN with the optimal algorithm had a high speed of convergence and good quality of prediction, and the FWNN model was more advantageous than the traditional intelligent coupling models (NN, WNN, and FNN) in prediction accuracy and robustness. The determination coefficients R2 of the FWNN models for predicting both the effluent quality and biogas production rates were over 0.95. The proposed model can be used for analyzing both biogas (methane) production rates and effluent quality over the operational time period, which plays an important role in saving energy and eliminating pollutant discharge in the wastewater treatment system.

scholarly journals Overview of the application of anaerobic treatment to chemical and petrochemical wastewaters

2000 ◽  
Vol 42 (5-6) ◽  
pp. 201-214 ◽  
Author(s):  
H. Macarie
Keyword(s):  
Anaerobic Digestion ◽  
Food Industry ◽  
Low Cost ◽  
Industrial Sector ◽  
Anaerobic Treatment ◽  
Full Scale ◽  
Actual Situation ◽  
Treatment Technology ◽  
Initial Development ◽  
Recent Developments

During the last 20 years, as a result of its low cost, anaerobic digestion has turned into a popular wastewater treatment technology. Today, with at least 1330 reactors constructed in the world, it is considered to have reached technological maturity. Until recently however, it was used quite exclusively for the treatment of food industry effluents. It is only during the last 10 years that anaerobic digestion has started to be applied massively to the treatment of sewage and effluents from other industrial activities. During the 1970s and 1980s, the chemical and petrochemical industries were almost refractory to the introduction of anaerobic digestion. The situation has reversed since 1990 and at least 80 full-scale anaerobic plants are nowadays treating this type of waste. Nevertheless, a great amount of promotion is still required before anaerobic digestion can be considered as an accepted technology by this industry. The paper presents the actual situation of anaerobic treatment at full-scale inthis industrial sector as well as recent developments at lab-scale and discusses some important concepts to consider before the implementation of an anaerobic treatment. In particular a table is presented with the main characteristics of 65 of the 80 full-scale plants identified to date. The probable reasons for the slow initial development of anaerobic treatment are also discussed and it is shown that anaerobic digestion has been the solution to treatment problems for which aerobic systems were inefficient.

scholarly journals Effect of low concentrations of dissolved oxygen on the activity of denitrifying methanotrophic bacteria

2018 ◽  
Vol 77 (11) ◽  
pp. 2589-2597 ◽  
Author(s):  
Christel Kampman ◽  
Laura Piai ◽  
Hardy Temmink ◽  
Tim L. G. Hendrickx ◽  
Grietje Zeeman ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Low Temperatures ◽  
Anaerobic Bacterium ◽  
Municipal Wastewater ◽  
Consumption Rate ◽  
Anaerobic Treatment ◽  
Anaerobic Wastewater Treatment ◽  
Methane Consumption ◽  
Low Concentrations ◽  
Slow Growing

Abstract Chemical energy can be recovered from municipal wastewater as biogas through anaerobic treatment. Effluent from direct anaerobic wastewater treatment at low temperatures, however, still contains ammonium and considerable amounts of dissolved methane. After nitritation, methane can be used as electron donor for denitrification by the anaerobic bacterium ‘Candidatus Methylomirabilis oxyfera’. It was shown that in the presence of 0.7% O2, denitrifying methanotrophic activity slightly increased and returned to its original level after oxygen had been removed. At 1.1% O2, methane consumption rate increased 118%, nitrite consumption rate increased 58%. After removal of oxygen, methane consumption rate fully recovered, and nitrite consumption rate returned to 88%. Therefore, traces of oxygen that bacteria are likely to be exposed to in wastewater treatment are not expected to negatively affect the denitrifying methanotrophic process. 2.0% O2 inhibited denitrifying activity. Nitrite consumption rate decreased 60% and did not recover after removal of oxygen. No clear effect on methane consumption was observed. Further studies should evaluate if intermittent addition of oxygen results in increased growth rates of the slow-growing ‘Candidatus Methylomirabilis oxyfera’.

Combined anaerobic treatment of wastewaters and sludges

1999 ◽  
Vol 40 (1) ◽  
pp. 85-91 ◽  
Author(s):  
Pavel Jeníček ◽  
Michal Dohányos ◽  
Jana Zábranská
Keyword(s):  
Wastewater Treatment ◽  
Anaerobic Treatment ◽  
Biofilm Reactor ◽  
Treatment Efficiency ◽  
Specific Design ◽  
Treatment Technology ◽  
Sludge Treatment ◽  
Anaerobic Wastewater Treatment ◽  
Anaerobic Pretreatment ◽  
High Treatment

One of the most recent and progressive reactor principles used in anaerobic wastewater treatment technology is a vertical compartmentalization, which is used in the USSB (Upflow Staged Sludge Bed) reactor. Thanks to its specific design and features the operation of such a reactor can be very flexible. Examples are given showing tested alternatives of operation with combined wastewater and sludge treatment. A high treatment efficiency and a very low specific sludge production was achieved with the operation of a technological system consisting of a USSB reactor and an aerobic biofilm reactor. In the USSB reactor wastewater and surplus sludge treatment can not only be combined but also anaerobic pretreatment and biological denitrification.

scholarly journals Modernization of Anaerobic Bioreactor for Waste Water Purification Plant

2021 ◽  
pp. 55-65
Author(s):  
Victoria Mel’nick ◽  
Olha Vorobyova ◽  
Natalia Ostapenko
Keyword(s):  
Waste Water ◽  
Wastewater Treatment ◽  
Anaerobic Treatment ◽  
Biotechnological Production ◽  
Anaerobic Bioreactor ◽  
Treatment Methods ◽  
Anaerobic Wastewater Treatment ◽  
Industry Waste ◽  
High Concentrations ◽  
High Level

Analysis of literature sources suggests that the use of anaerobic treatment methods is especially effective for high concentrations of contaminants in wastewater, as well as for large volumes of water supplied for treatment, which is typical for industrial wastewater. In biotechnological production and food industry, waste water has a high level of pollution with organic compounds, it is advisable to use anaerobic treatment methods. Anaerobic wastewater treatment processes are characterized by low energy consumption and the ability to recover energy through the combustion of methane. To ensure the required temperature regime for the operation of the bioreactor, a new design of the heat exchange device of the anaerobic bioreactor with immobilized microorganisms has been developed. This design of the bioreactor can provide the required degree of wastewater purification at significantly lower costs for construction, operation, and material and energy resources. For clarity, the design features were designed bioreactor with a plane load of bundled software SOLIDWORKS and a mathematical model of the processes of anaerobic wastewater treatment.

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