scholarly journals Treatment of Bio-methanated Distillery Spentwash using various Physico-Chemical Treatment Techniques

Distilleries are one of the important secondary agro based industries. Every liter of alcohol produced will generate around 8 to 10 liters of Spentwash, which is highly complex liquid waste with dark reddish brown colour. Distilleries are listed in Red category by Ministry of Environment, Forest and Climate Change, Govt. of India, due to the complexity of Spentwash. This liquid waste is very difficult to treat and safe disposal of the same is a tedious task for distilleries. Most of the distilleries have adopted anaerobic digestion as a source of energy recovery by extracting methane from spentwash. The effluent from the anaerobic digester is called Bio-methanated Spentwash (BMSW), which is partially treated, but still concentrated and the same cannot be disposed into the environment safely. Present study is a part of Research work, which concentrates on various treatment techniques to further treat the Bio-methanated Spentwash to use it in composting of Pressmud in field scale. Electrocoagulation, Adsorption and Fenton Oxidation are selected as treatment techniques for the study, to convert Bio-methanated Spentwash into Stabilized Spentwash (SSW). This study showed, Fenton oxidation has a maximum removal efficiency with COD reduction of 45%, but produces volatile organic fumes harmful for the living beings. Hence, for the field scale implementation of Stabilization of Spentwash, Electrocoagulation process is recommended, due to its efficiency and practical feasibility of implementation .

2016 ◽  
Vol 214 ◽  
pp. 795-805 ◽  
Author(s):  
Florian Part ◽  
Christoph Zaba ◽  
Oliver Bixner ◽  
Christian Zafiu ◽  
Stephan Hann ◽  
...  

Author(s):  
Anil Kumar ◽  
Monika Chandrabhan Dhote

Environmental contamination due to petroleum compounds is a serious global issue. Oil /petroleum refineries produce huge amount of oil sludge during drilling, storage, transport, refining which spoil soil and ground water resources. Such activities release different compounds viz. alkane, mono- polyaromatic hydrocarbons (PAH), asphaltene, resins and heavy metals. Due to physico-chemical properties, PAHs are one of most targeted compounds as they are highly persistent, carcinogenic, and have mutagenic effects on ecosystem. Such problems of PAHs drag researcher's attention to find some reliable and cost effective solution for oil sludge disposal management. Since last few decades, extensive research work has been carried out on various methods for treatment of oil sludge. In recent years, microbial assisted phytoremediation treatment technologies are being studied since these are reliable and cost effective for field applications. Here, we have discussed about combined eco-friendly technology of plant and microbe(s) to treat oil sludge for its better management.


2018 ◽  
Vol 33 (2) ◽  
pp. 163-203 ◽  
Author(s):  
Punyasloka Pattnaik ◽  
G.S. Dangayach ◽  
Awadhesh Kumar Bhardwaj

Abstract The textile industry in India plays a vital role in the economic growth of the nation. The growth of the textile industry not only impacts the economy of a country but also influences the global economy and mutual exchange of technology between the countries. However, the textile industry also generates an enormous quantity of waste as waste sludge, fibers and chemically polluted waters. The chemically polluted textile wastewater degrades the quality of the soil and water when it mixes with these natural resources and its dependent habitats and environment. Owing to the existing problem of solid and liquid waste, textile industries are facing major problems in environment pollution. Therefore, researchers and the textile industries are focusing on the reduction of textile wastewater and the formulation of alternative efficient treatment techniques without hampering the environment. Hence, the present literature survey mainly concentrates on the various wastewater treatment techniques and their advantages. Moreover, the focus of the study was to describe the methods for the reduction of environmental waste and effective utilization of recycled water with zero wastewater management techniques. The alternative methods for the reduction of textile waste are also covered in this investigation. Finally, this paper also suggests utilization of solid wastes after treatment of wastewater in other sectors like construction for the preparation of low-grade tiles and or bricks by replacing the cement normally used in their manufacturing.


2010 ◽  
Vol 47 (1) ◽  
pp. 101-109 ◽  
Author(s):  
Anna Piotrowska ◽  
Jacek Długosz ◽  
Barbara Namysłowska-Wilczyńska ◽  
Ryszard Zamorski

2014 ◽  
Vol 600 ◽  
pp. 485-494
Author(s):  
Ahcene Merida ◽  
Fattoum Kharchi ◽  
Rabah Chaid

In Algeria, locally available natural pozzolan of volcanic origin material has the potential for use in environmental friendly concrete as a partial cement replacement. This paper studies the effect of replacement level of pozzolan concrete in sulphated environment. The natural pozzolan has a marked influence on the properties of the concrete. When it is coupled to a water reducing superplasticizer by a correct adjustment of the composition, it greatly improves the concrete properties. The analysis of experimental results on pozzolan concrete at 5% content and fineness of 9565 cm2/g exposed in sulphated environment, show that it positively contributes to the improvement of its mechanical, physical and physico-chemical characteristics. Trough this research work, parameters such as compressive strength development, chloride permeability, water absorption and sulphates resistance are studied.


Composting can be one of the solutions to tackle the issue of handling solid waste. In the present research work, a bench-scale vertical in-vessel aerobic composter was designed to stabilize the Devaraja market vegetable waste, Mysore using horse dung and plantain leaves as seeding material and bulking agent respectively. On average, Devaraja market generate 4.8-5.6 ton per day. Mix proportion of organic waste, bulking and seeding materials fed into composter was in the ratio of 5: 1: 0.5. Initial and variation in physico-chemical characteristics of waste were monitored during the composting period. The initial concentration of total nitrogen, phosphorous, total organic carbon and C/N ratio which was found to be 1.67%, 0.78%, 1.93%, 43.5% and 26 showed a variation of 2.4%, 1.1%, 2% 29% and 15 respectively at the end of 21 days of composting.


Irriga ◽  
2016 ◽  
Vol 21 (4) ◽  
pp. 648-661 ◽  
Author(s):  
Rafael Oliveira Batista ◽  
Rubens Alves de Oliveira ◽  
Delfran Batista dos Santos ◽  
Fernando França da Cunha ◽  
Salomão de Sousa Medeiros

MODELOS EMPÍRICOS DA APLICAÇÃO DE ÁGUA RESIDUÁRIA DE SUINOCULTURA POR GOTEJADORES SOB PRESSÕES DE SERVIÇO  RAFAEL OLIVEIRA BATISTA1; RUBENS ALVES DE OLIVEIRA2; DELFRAN BATISTA DOS SANTOS3; FERNANDO FRANÇA DA CUNHA2 E SALOMÃO DE SOUSA MEDEIROS4 1 Departamento de Ciências Ambientais e Tecnológicas, UFERSA câmpus Mossoró-RN, Avenida Francisco Mota, no 572, Bairro Costa e Silva, CEP: 59.625-900 - Mossoró, RN, Brasil, e-mail: [email protected] Departamento de Engenharia Agrícola e Ambiental, UFV câmpus Viçosa-MG, Avenida Peter Henry Rolfs, s/n, Campus Universitário, CEP: 36570-900 - Viçosa, MG, Brasil, e-mail: [email protected], [email protected] Instituto Federal de Educação, Ciência e Tecnologia Baiano, Câmpus Senhor do Bonfim-BA. Estrada de Igara, km 04, s/n, zona rural, CEP: 48970-000 - Senhor do Bonfim, BA, Brasil, e-mail: [email protected] Instituto Nacional do Semiárido, INSA. Avenida Francisco Lopes de Almeida, s/n, Bairro Serrotão, CEP: 58.429-970 - Campina Grande, PB, Brasil, e-mail: [email protected]  1 RESUMO Este trabalho objetivou obter modelos empíricos das alterações da magnitude de pressões de serviço na minimização da obstrução de gotejadores através da aplicação de água residuária de suinocultura e água de abastecimento público. O experimento foi montado com dois fatores, sendo três tipos de gotejadores (G1 = 2,0 L h-1, G2 = 1,7 L h-1 e G3 = 3,6 L h-1) e quatro pressões de serviço (P1 = 75 kPa, P2 = 145 kPa, P3 = 215 kPa e P4 = 285 kPa) em três repetições. Para determinação dos modelos, foram avaliados os indicadores de desempenho hidráulico coeficiente de variação de vazão, coeficiente de uniformidade estatística e coeficiente de vazão relativa média que foram determinados a cada 20 h, durante 160 h de operação do sistema de irrigação. Os dados foram submetidos à análise de regressão, representando 12 combinações entre os tipos de gotejadores e as pressões de serviço, ao longo dos tempos de operação. Também foram avaliadas as características físico-químicas e microbiológicas da água residuária de suinocultura e da água de abastecimento público a cada 20 h e 80 h, respectivamente. Após 160 h de aplicação de água residuária de suinocultura e água de abastecimento público houve comprometimento do desempenho hidráulico das unidades gotejadoras em função do entupimento dos gotejadores. Os modelos de regressão quadrático, hiperbólico, raiz quadrada e linear foram os de melhor ajuste aos dados do coeficiente de variação de vazão e coeficiente de uniformidade estatística em função do tempo de operação, em quanto os modelos raiz quadrada, hiperbólico e linear foram os mais adequados para o coeficiente de vazão relativa média. Palavras-chave: Resíduo liquido, desempenho hidráulico, entupimento.  BATISTA, R. O.; OLIVEIRA, R. A.; SANTOS, D. B.; CUNHA,F. F.; MEDEIROS, S. S.EMPIRICAL MODELS OF THE APPLICATION OF SWINE WASTEWATER AND SUPPLY WATER IN DRIPPERS UNDER OPERATING PRESSURE    2 ABSTRACT This study aimed at obtaining the empirical models for magnitude alterations of operating pressures, in minimizing obstruction of drippers by applying swine wastewater and water supply. The experiment was mounted with two factors, three types of drippers (G1 = Tif Naan; G2 = Naan Drip Paz 25; and G3 = Plastro Hydro PC) and four operating pressures (P1 = 75 kPa; P 2 = 145 kPa; P3 = 215 kPa; e P4 = 285 kPa) in three replications. Data were subjected to regression analysis, representing 12 combinations between the types of drippers and working pressures, during the operation time. The water performance indicators, flow  variation coefficient, statistical uniformity coefficient and relative flow coefficient were determined every 20 h during 160 h of operation. The physico-chemical and biological characteristics of swine wastewater and supply water were obtained every 20 h and 80 h, respectively. The magnitude increase on operating pressure minimizes clogging of drippers that operate with swine wastewater and supply water. The combinations 8 (G2 x P3) and 9 (x G3 P3) resulted in the highest indicators of water performance in drip irrigation units. Keywords: liquid waste, swine, hydraulic performance, clogging.


2021 ◽  
Vol 5 (1) ◽  
pp. 29
Author(s):  
Freddy Waldir Gómez Escobedo ◽  
Jorge Edinson Gómez Escobedo ◽  
Erick Alexander Choton Cipriano ◽  
Dagner Marvin Castañeda Hilario ◽  
César Pol Arévalo Aranda ◽  
...  

The present research work had as study variables the current density of 20, 40 and 80 mA/cm2 and residence times of 10, 20, 40 and 60 minutes, within these evaluation parameters values were taken of pH, conductivity and Fe2+ removal percentage before and after the electrocoagulation process of artisanal acid mine drainage samples (AMD), the amount of AMD sample per test was 350 mL per test, from the results obtained it could be observed that For the current density of 80 mA/cm2 and a time of 40 minutes, the highest percentage of removal was obtained (76.20%), likewise a minimum percentage of removal of 17.97% was obtained at 20 mA/cm2; The removal percentages are attributed to the effect of the current density of the electrocoagulation process, which allows increasing the initial pH values of the effluent, which in turn allows the formation of precipitates and co-precipitates, in this case of Fe2+.


The worldwide population is developing and along these lines, the world may event incredible freshwater shortage. Our water assets are lacking and, thus, water management and reusing techniques are the main choices for receiving freshwater later on decades. Accordingly, there is an incredible requirement for the advancement of proper, reasonable and quick wastewater. The common plan of this investigation is based on assessment and comparison, of the chance of apply advanced treatment techniques (Aeration process and Fenton oxidation process) for the exclusion of residuals organic pollutant present in Dye wastewater. The various procedures, which influence the compound oxidation, for colors in their fluid arrangements are considered by utilizing Aeration and Fenton's responses. These Processes are Aeration and Fenton Oxidation Process- (Hydrogen peroxide dose). Finally, EC, COD, BOD, Turbidity, TDS, TSS, and Phosphate, when the oxidation procedure is determined to guarantee the flawless obliteration of natural colors during their expulsion from wastewater. The Compared optimum conditions were 6ml/l of Fenton (H2O2) demonstrate that Fenton's oxidation procedure effectively accomplished excellent evacuation capability.


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