scholarly journals Impact of Leachate in the Soil Vellalore, Coimbatore

2020 ◽  
Vol 9 (4) ◽  
pp. 3075-3078
Keyword(s):  
Solid Waste ◽  
Batch Reactor ◽  
Chemical Characterization ◽  
Ammonia Nitrogen ◽  
Total Carbon ◽  
Disposal Site ◽  
Resource Exploitation ◽  
Cumulative Volume ◽  
Volatile Solids ◽  
Physical And Chemical

As a consequence of increasing urbanisation and industrialization two major effects have occurred. They are resource exploitation and waste generation. In this view, the present work has been undertaken to study problems of open dumping of MSW at Vellalore disposal site of Coimbatore city. The objectives of the present study are monitor and assess the problems of principle solid waste on land and to investigate the feasibility of energy recover from MSW. Physical and chemical characterization of MSW collected from the disposal site showed that the solid waste has 68.95% of biodegradable fraction with relatively higher percentage of moisture content and 72% of volatile solids contents. Hence, methanation process of MSW can be carried out to recover energy. Leachate characterisation study concludes the that the concentration of Total Organic Carbon, Ammonia nitrogen, volatile solids, pH , electrical conductivity were high in fresh leachate and decreased due to the decomposition of MSW. Soil quality study of Vellalore site showed that the soil texture and colour has been altered to a depth of 60cm.To manage the solid waste problem, high solids anaerobic digestion process was carried out in the laboratory in a batch reactor, which showed that the factor pH was found to be significant in the production of biogas. The concentration of volatile solids, Total carbon, Total nitrogen, due to the decomposition of the reactor contents, which has utilized in the production of gas. During the experimental study a cumulative volume of 3.2 litres of gas was obtained in a period of 120 days from 8 litres volume of the initially loaded MSW.

scholarly journals Pepper root rot resistance and pepper yield are enhanced through biological agent G15 soil amelioration

PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e11768
Author(s):  
Xuejiang Zhang ◽  
Dazhao Yu ◽  
Hua Wang
Keyword(s):  
Root Rot ◽  
Pathogenic Fungus ◽  
Chemical Properties ◽  
Ammonia Nitrogen ◽  
Biological Agent ◽  
Total Carbon ◽  
And Control ◽  
Physical And Chemical ◽  
Total Potassium ◽  
And Chemical Properties

Pepper root rot is a serious soil-borne disease that hinders pepper production, and efforts are being made to identify biological agents that can prevent and control pepper root rot. Our group recently discovered and produced a biological agent, named G15, which reduces the diversity and richness of fungi and bacteria when applied to pepper fields. In the soil of the G15-treatment condition, the pathogenic fungus Fusarium was inhibited, while the richness of beneficial bacteria Rhodanobacter was increased. Also, the ammonia nitrogen level was decreased in the G15-treatment soil, and the pH, total carbon, and total potassium levels were increased. Compared to the control condition, pepper yield was increased in the treatment group (by 16,680 kg acre−1). We found that G15 could alter the microbial community structure of the pepper rhizosphere. These changes alter the physical and chemical properties of the soil and, ultimately, improve resistance to pepper root rot and increase pepper yield.

Performance characterization of anaerobic sequencing batch reactor process for digestion of night soil

2001 ◽  
Vol 43 (1) ◽  
pp. 27-34 ◽  
Author(s):  
J. G. Lee ◽  
J. M. Hur ◽  
D. Chang ◽  
T. H. Chung
Keyword(s):  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Ammonia Nitrogen ◽  
Gas Production ◽  
High Concentration ◽  
Anaerobic Sequencing Batch Reactor ◽  
Mixed Control ◽  
Volatile Solids ◽  
Equivalent Loading

Laboratory experiments were conducted to investigate the performance of an anaerobic sequencing batch reactor (ASBR) process for night soil treatment. Performances of the reactors were evaluated at an equivalent hydraulic retention time (HRT) of 10 days with an equivalent loading rate of 2.6 kgVS/m3/d (3.1 kgCOD/m3/day) at 35°C. Digestion of a night soil was possible using the ASBR at an HRT of 10 days in spite of high concentration of ammonia nitrogen and settleable solids. Solids were accumulated rapidly in the ASBRs, and their concentrations were 2.3∼2.4 times higher than that in a completely mixed control reactor. Remarkable increases in gas production were observed in the ASBRs compared with the control reactor. Average increases in equivalent daily gas production from the ASBRs were 205∼220% compared with that from the control run. The ASBR with reaction period/thickening period ratio (R/T ratio) of 1 showed a little higher gas production and organic removal efficiency than that with R/T ratio of 3. Volatile solids removals based on supernatant of the ASBRs were 12∼14% higher than that of the control reactor. Thus, the ASBR was a stable and effective process for the treatment of night soil having high concentration of settleable organics and ammonia nitrogen.

scholarly journals Quantitative and physico-chemical characterization of domestic solid waste in a typical Nigerian municipality

2014 ◽  
Vol 15 (1&2) ◽  
pp. 123-133
Author(s):  
Nnaji Chidozie Charles
Keyword(s):  
Solid Waste ◽  
Average Rate ◽  
Relative Proportion ◽  
Chemical Characterization ◽  
Household Waste ◽  
Disposal Site ◽  
Waste Generation ◽  
Final Disposal ◽  
Higher Institution ◽  
Domestic Solid Waste

In the present study solid waste were collected from households, banks, restaurants, higher institution, open dump and a final disposal site of Nigerian municipality with a view to determining waste generation rate, relative waste compositions and its physicochemical properties. During the course of study average rate of solid waste generation was found to be 0.39Kg/capita/day. A highly negative correlation (R2 = 0.99) was observed between per capita waste generation and household size (n) for n ? 4. The waste collected from households consisted of putriscibles (47%) 11% water proof, 6% plastics, 4% glass, 3% clothes/textiles, 2% diapers and 19% of other unclassified materials. Due to the activities of scavengers, the relative proportion of recyclables such as plastic, glass and metals decreased as waste materials transited from households to the final dumpsite via open dumps, while the other fractions increased. It was found that 79% of the solid waste generated can either be recycled (32%) or composted (47%) however; only 12% is recovered for recycling/reuse while composting is hardly practiced. The three most important factors responsible for relative differences in the composition of solid waste obtained from different sources are scavenging, biodegradation and leaching. The putriscible fractions from households, curb sides and the final disposal site were assessed for their suitability for composting using the clean index (CI) criteria. It was found that the final disposal site with a CI of 3.3 on a scale of 5 was a better source of compost material than freshly generated household waste (CI = 2.9) and curb side waste (CI = 2.4).

scholarly journals GESTÃO DE SERVIÇOS DE LIMPEZA URBANA EM CIDADES DE MÉDIO PORTEDOI: 10.5773/rgsa.v4i3.334

2010 ◽  
Vol 4 (3) ◽  
pp. 146
Author(s):  
Valderi Duarte Leite ◽  
Susiene Almeida de Oliveira ◽  
Shiva Prasad ◽  
Maria Denise Ribeiro
Keyword(s):  
Solid Waste ◽  
Local Community ◽  
Chemical Characterization ◽  
Substantial Contribution ◽  
Waste Collection ◽  
Collection Management System ◽  
Per Capita ◽  
Physical And Chemical ◽  
The City

Este trabalho tem como principal objetivo, estudar a realidade do Sistema de Limpeza Urbana da cidade de Campina Grande-PB, analisando de maneira integrada os seus aspectos sociais, econômicos e ambientais. A metodologia fundamentou-se na aplicação de questionários aos técnicos da Secretaria de Obras e Serviços Urbanos do município e aos da empresa prestadora de serviço, responsável por 90% da coleta de resíduos sólidos domiciliares e comerciais da cidade e entrevistas à comunidade atendida pela serviço de limpeza pública, para obtenção de informações a respeito da problemática dos resíduos sólidos urbanos da cidade de Campina Grande-PB. O trabalho foi norteado também na identificação dos roteiros e prática de coleta realizada no município, na determinação da taxa de produção per capita e caracterização física e química dos resíduos sólidos domiciliares. Os resultados advindos da realização deste trabalho,apresentam substanciais contribuições na área da limpeza urbana. Além disso, com base no diagnóstico obtido delineou-se um novo modelo para o sistema de limpeza urbana tanto para a cidade de Campina Grande-PB, enquanto para as demais cidades com características equivalentes. Palavras-chave:Resíduos sólidos; limpeza urbana; coleta de resíduos; sistema de gestão. ABSTRACT This work has as its main objective to study the reality of the System of Urban Cleaning in the city of Campina Grande (PB), analyzing in an integrated way its social, economic and environmental aspects. The methodology is based on the application of questionnaires to the technicians in the local Urban Services Department and to the employees of the waste collection company, responsible for 90% of the collection of solid waste. Interviews are also applied to members of the local community. The work was also guided towards the identification of the routes and procedures of collection carried out in the city, and also the determination of per capita production rating and physical and chemical characterization of the home solid waste. The results present substantial contribution to the area of the urban cleaning. Therefore, a new model for the system of urban cleaning is designed not only for Campina Grande but also for other cities alike. Keywords:Solid waste; urban cleaning; waste collection; management system.

Biological and Chemical Characterization of Organic Substances in Water Purification Pond at Sea-Based Solid Waste Disposal Site

1992 ◽  
Vol 25 (11) ◽  
pp. 425-432 ◽  
Author(s):  
T. Yoshikura ◽  
M. Kitano ◽  
T. Nishio ◽  
I. Fukunaga ◽  
K. Masumoto ◽  
...  
Keyword(s):  
Solid Waste ◽  
Waste Disposal ◽  
Water Purification ◽  
Mutagenic Activity ◽  
Chemical Properties ◽  
Chemical Characterization ◽  
Disposal Site ◽  
Organic Substances ◽  
Solid Waste Disposal ◽  
Waste Disposal Site

The biological and chemical properties of organic substances in the water purification pond at a sea-based solid waste disposal site, in Osaka City, have been investigated. The mutagenic activities in the extract of water and benthal mud were detected by the Ames Salmonella typhimurium TA98/microsome assay. The extracts of water and sediments of the disposal site showed a weak mutagenic activity to TA98 with S9 mix. The levels of mutagenic activity in water were almost the same as those of the Yodo river. Dichloromethane (DCM) extracts of sediments were separated into acidic, basic and neutral fractions. The neutral fraction was further fractionated on a silica-gel column chromatography and tested for mutagenicity in the Ames assay. The mutagenic subfractions were analyzed by capillary column gas chromatography-mass spectrometory (GC-MS) and 20 kinds of polynuclear aromatic hydrocarbon (PAHs) were detected. These results indicate that the PAH-containing fractions account for most of the genotoxic activity observed in this reservoir sediment.

Solid Waste Management on Romanian Households

2018 ◽  
Vol 68 (12) ◽  
pp. 2941-2947
Author(s):  
George Ungureanu ◽  
Gabriela Ignat ◽  
elena Leonte ◽  
Carmen Luiza Costuleanu ◽  
Nicoleta Stanciu ◽  
...  
Keyword(s):  
Waste Management ◽  
Solid Waste ◽  
Agricultural Development ◽  
Management Practices ◽  
Solid Waste Management ◽  
Raw Materials ◽  
Rapid Development ◽  
Disposal Site ◽  
Solid Waste Disposal ◽  
Factors Affecting

The problem associated with the household behavior on solid waste disposal site in today�s society is complex because of the large quantity and diverse nature of the wastes. Due increase the population, rapid development, global agricultural development has moved rapidly, limitations of financing, emerging limitations of both energy and raw materials and also add to the complexity of any waste management system, large quantities of wastes are being generated in different forms such as solid, liquid and gases. This research explored factors affecting the level of participation in solid waste segregation and recycling of households in Romania, as well as examining current Romania households waste management practices and their knowledge of waste management. This study investigated the solid waste situation and the organization of solid waste management in both urban and rural settings from the perspective of households. Solid waste management is a key component of public services which needs to serve the urban and rural municipalities in an efficient way in order to maintain a decent standard of public health.

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