1
|
Zhang Y, Xu S, Cui M, Wong JWC. Effects of different thermal pretreatments on the biodegradability and bioaccessibility of sewage sludge. WASTE MANAGEMENT (NEW YORK, N.Y.) 2019; 94:68-76. [PMID: 31279397 DOI: 10.1016/j.wasman.2019.05.047] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2019] [Revised: 05/18/2019] [Accepted: 05/25/2019] [Indexed: 06/09/2023]
Abstract
Thermal hydrolysis has proven to be a successful approach to make sewage sludge more amenable to anaerobic digestion. Three heat pretreatment scenarios were compared in this study, i.e. thermal alkaline treatment (LAT, 0.1 M NaOH, 80 °C), low temperature thermal treatment (LT, 80 °C) and high temperature thermal treatment (HT, 170 °C). The biodegradability of pretreated sludge was testified by using biochemical methane potential (BMP) test, meanwhile, the repartition and complexities of organic matters in sludge subjected to various pretreatments were characterized by a revised chemical extraction protocol combined with 3D fluorescence spectroscopy. The cumulative methane yield of sewage sludge was significantly increased by LAT (+135%), LT (+95%) and HT (+112%) as compared to the control. Nevertheless, results show that the solubilization degree of sludge was insignificantly correlated to BMP values, meanwhile high correlation values were observed for the soluble polysaccharide concentration in hydrolysate. The degradation rates of bioaccessible fraction of soluble particulate organic matter (SPOM) and readily extractible organic matter (REOM) were improved after thermal pretreatments at varied levels, which indicates that the chemical accessibility is positively correlated with the bioaccessibility. Furthermore, the biodegradable index Fdigestion was proposed to evaluate the biodegradability of organic matter, which is helpful for the optimization of various pretreatment strategies.
Collapse
Affiliation(s)
- Yucheng Zhang
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Suyun Xu
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China.
| | - Minghao Cui
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Jonathan W C Wong
- Department of Biology, Hong Kong Baptist University, Hong Kong Special Administrative Region
| |
Collapse
|
2
|
Charnier C, Latrille E, Jimenez J, Torrijos M, Sousbie P, Miroux J, Steyer JP. Fast ADM1 implementation for the optimization of feeding strategy using near infrared spectroscopy. WATER RESEARCH 2017; 122:27-35. [PMID: 28587913 DOI: 10.1016/j.watres.2017.05.051] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 05/05/2017] [Accepted: 05/07/2017] [Indexed: 06/07/2023]
Abstract
Optimization of feeding strategy is an essential issue of anaerobic co-digestion that can be greatly assisted with simulation tools such as the Anaerobic Digestion Model 1. Using this model, a set of parameters, such as the biochemical composition of the waste to be digested, its methane production yield and kinetics, has to be defined for each new substrate. In the recent years, near infrared analyses have been reported as a fast and accurate solution for the estimation of methane production yield and biochemical composition. However, the estimation of methane production kinetics requires time-consuming analysis. Here, a partial least square regression model was developed for a fast and efficient estimation of methane production kinetics using near infrared spectroscopy on 275 bio-waste samples. The development of this characterization reduces the time of analysis from 30 days to a matter of minutes. Then, biochemical composition and methane production yield and kinetics predicted by near infrared spectroscopy were implemented in a modified Anaerobic Digestion Model n°1 in order to simulate the performance of anaerobic digestion processes. This approach was validated using different data sets and was demonstrated to provide a powerful predictive tool for advanced control of anaerobic digestion plants and feeding strategy optimization.
Collapse
Affiliation(s)
- Cyrille Charnier
- LBE, INRA, 102 Av. des Etangs, F-11100 Narbonne, France; BioEnTech, 74 Av. Paul Sabatier, F-11100 Narbonne, France.
| | - Eric Latrille
- LBE, INRA, 102 Av. des Etangs, F-11100 Narbonne, France.
| | - Julie Jimenez
- LBE, INRA, 102 Av. des Etangs, F-11100 Narbonne, France.
| | | | | | - Jérémie Miroux
- BioEnTech, 74 Av. Paul Sabatier, F-11100 Narbonne, France.
| | | |
Collapse
|
3
|
Kinetic analysis of biological degradation for tetramethylammonium hydroxide (TMAH) in the anaerobic activated sludge system at ambient temperature. Biochem Eng J 2016. [DOI: 10.1016/j.bej.2016.06.020] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
4
|
Jimenez J, Gonidec E, Cacho Rivero JA, Latrille E, Vedrenne F, Steyer JP. Prediction of anaerobic biodegradability and bioaccessibility of municipal sludge by coupling sequential extractions with fluorescence spectroscopy: towards ADM1 variables characterization. WATER RESEARCH 2014; 50:359-372. [PMID: 24238878 DOI: 10.1016/j.watres.2013.10.048] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2013] [Revised: 10/13/2013] [Accepted: 10/18/2013] [Indexed: 06/02/2023]
Abstract
Advanced dynamic anaerobic digestion models, such as ADM1, require both detailed organic matter characterisation and intimate knowledge of the involved metabolic pathways. In the current study, a methodology for municipal sludge characterization is investigated to describe two key parameters: biodegradability and bioaccessibility of organic matter. The methodology is based on coupling sequential chemical extractions with 3D fluorescence spectroscopy. The use of increasingly strong solvents reveals different levels of organic matter accessibility and the spectroscopy measurement leads to a detailed characterisation of the organic matter. The results obtained from testing 52 municipal sludge samples (primary, secondary, digested and thermally treated) showed a successful correlation with sludge biodegradability and bioaccessibility. The two parameters, traditionally obtained through the biochemical methane potential (BMP) lab tests, are now obtain in only 5 days compared to the 30-60 days usually required. Experimental data, obtained from two different laboratory scale reactors, were used to validate the ADM1 model. The proposed approach showed a strong application potential for reactor design and advanced control of anaerobic digestion processes.
Collapse
Affiliation(s)
- Julie Jimenez
- Veolia Environment Research & Innovation, Chemin de la Digue, BP 76, 78603 Maisons Laffitte Cedex, France.
| | - Estelle Gonidec
- Veolia Environment Research & Innovation, Chemin de la Digue, BP 76, 78603 Maisons Laffitte Cedex, France
| | - Jesús Andrés Cacho Rivero
- Veolia Environment Research & Innovation, Chemin de la Digue, BP 76, 78603 Maisons Laffitte Cedex, France
| | - Eric Latrille
- INRA, UR050, Laboratoire de Biotechnologie de l'Environnement, Av. des Etangs, Narbonne F-11100, France
| | - Fabien Vedrenne
- Veolia Environment Research & Innovation, Chemin de la Digue, BP 76, 78603 Maisons Laffitte Cedex, France
| | - Jean-Philippe Steyer
- INRA, UR050, Laboratoire de Biotechnologie de l'Environnement, Av. des Etangs, Narbonne F-11100, France
| |
Collapse
|
5
|
de Gracia M, Grau P, Huete E, Gómez J, García-Heras JL, Ayesa E. New generic mathematical model for WWTP sludge digesters operating under aerobic and anaerobic conditions: Model building and experimental verification. WATER RESEARCH 2009; 43:4626-4642. [PMID: 19720390 DOI: 10.1016/j.watres.2009.07.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2009] [Revised: 05/18/2009] [Accepted: 07/11/2009] [Indexed: 05/28/2023]
Abstract
This paper presents a new mathematical model developed to reproduce the performance of a generic sludge digester working either under aerobic or anaerobic operational conditions. The digester has been modelled as two completely mixed tanks associated with gaseous and liquid volumes. The conversion model has been developed based on a plant wide modelling methodology (PWM) and comprises biochemical transformations, physicochemical reactions and thermodynamic considerations. The model predicts the reactor temperature and the temporary evolution of an extensive vector of model components which are completely defined in terms of elemental mass fractions (C, H, O, N and P) and charge density. Thus, the comprehensive definition of the model components guarantees the continuity of elemental mass and charge in all the model transformations and between any two systems defined by the model. The aim of the generic digester model is to overcome the problems that arise when trying to connect aerobic and anaerobic digestion processes working in series or to connect water and sludge lines in a WWTP. The modelling methodology used has allowed the systematic construction of the biochemical model which acts as an initial illustrative example of an application that has been experimentally verified. The variation of the temperature is also predicted based on a thermal dynamic model. Real data from four different facilities and a straightforward calibration have been used to successfully verify the model predictions in the cases of mesophilic and thermophilic anaerobic digestion as well as autothermal thermophilic aerobic digestion (ATAD). The large amount of data from the full scale ATAD and the anaerobic digestion pilot plants, all of them working under different conditions, has allowed the validation of the model for that case study.
Collapse
Affiliation(s)
- M de Gracia
- CEIT, Section of Environmental Engineering, San Sebastián, Spain.
| | | | | | | | | | | |
Collapse
|
6
|
Yasui H, Goel R, Li YY, Noike T. Modified ADM1 structure for modelling municipal primary sludge hydrolysis. WATER RESEARCH 2008; 42:249-59. [PMID: 17719077 DOI: 10.1016/j.watres.2007.07.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2007] [Revised: 07/07/2007] [Accepted: 07/10/2007] [Indexed: 05/16/2023]
Abstract
This study elaborates the rate-limiting steps of particle disintegration/hydrolysis of primary sludge using methane production rate (MPR) curves from multiple batch experiments. Anaerobic batch degradation of fresh primary sludge showed a complex MPR curve marked with two well-defined temporal peaks. The first immediate peak was associated with the degradation of relatively readily hydrolysable substrates, while the second delayed peak was associated with the degradation of large-sized particles. For simulating the second delayed peak, it was necessary to consider a more elaborate particle disintegration/hydrolysis model. Based on the anaerobic respirograms of 17 runs in four datasets and using a substrate characterisation approach similar to activated sludge models (ASMs), the primary sludge was classified into three biodegradable fractions having different kinetics. These are (1) a hydrolysable substrate (X(Settle-I)) showing a degradation typical to slowly biodegradable compounds, (2) a substrate fraction (X(Settle-II)) having a degradation similar to lysis of biomass fraction and (3) a substrate requiring disintegration before hydrolysis (X(Settle-III)) representing the large-sized particles in primary sludge. Based on these results, modifications in the model structure of anaerobic digestion model no. 1 (ADM1) are proposed to improve the modelling of primary sludge solid degradation in anaerobic digesters.
Collapse
Affiliation(s)
- H Yasui
- Kurita Water Industries, 1-1, Kawada-Gochoyama, Nogi, Tochigi 329-0105, Japan.
| | | | | | | |
Collapse
|