Cattle Feedlot Manure and Wastewater Management Practices

1997 ◽  
pp. 125-155 ◽  
Author(s):  
P Moore Jr
Keyword(s):  
Management Practices ◽  
Wastewater Management ◽  
Cattle Feedlot

Sewage Treatment by Waste Stabilization Pond Systems

2018 ◽  
Vol 3 (1) ◽  
pp. 7-14
Author(s):  
J. Kenneth, R. S. Suglo
Keyword(s):  
Management Practices ◽  
Sewage Treatment ◽  
Oxygen Demand ◽  
Wastewater Management ◽  
Stabilization Pond ◽  
Waste Stabilization Pond ◽  
Quality Guidelines ◽  
Waste Stabilization ◽  
High Reduction ◽  
Wastewater Samples

Sewage generated in Ghana is commonly discharged into the environment without any form of treatment to reduce the degree ofcontamination and mitigate potential public health and environmental issues. Although some attempts have been made in someparts of Ghana to utilize the waste stabilization pond (WSP) system to treat domestic sewage, the ponds often fail to achievetheir purpose due to lack of basic maintenance and supervision. To assess the utility of the WSP system for treating sewage,wastewater samples were collected from the raw sewage, anaerobic, facultative and maturation ponds of WSPs at Obuasi inGhana, and analyzed for physicochemical and microbiological contaminants. The results show that the final pond effluent meetsrecommended microbiological and chemical quality guidelines. The waste stabilization pond system demonstrates high removalefficiencies of wastewater contaminants. The biochemical oxygen demand, total suspended solids, nitrate and faecal coliformsreduction efficiencies of 97.3%, 97.6%, 83.3% and 99.94% respectively are highly significant, and compare well with reportedremoval efficiencies in the literature. Additionally, the ponds have high reduction efficiencies for heavy metals and pathogenicmicroorganisms. The wastewater treatment system complies with standard wastewater management practices, and provides auseful method for treating and disposing wastewater in Ghana.

Mining wastewater management and its effects on groundwater and ecosystems

2014 ◽  
Vol 70 (9) ◽  
pp. 1481-1487 ◽  
Author(s):  
A. Celebi ◽  
S. Özdemir
Keyword(s):  
Risk Assessment ◽  
Best Management Practices ◽  
Large Scale ◽  
Management Practices ◽  
Developed Countries ◽  
International Standards ◽  
Wastewater Management ◽  
Mining Areas ◽  
Mining Wastewater ◽  
The Developed Countries

Large-scale mining activities have a huge impact on the environment. Determination of the size of the effect and monitoring it is vital. In this study, risk assessment studies in mining areas and the effect of mining on groundwater and ecosystems were investigated. Best management practices and risk assessment steps were determined, especially in areas with huge amounts of mining wastewater. The pollution of groundwater and its reaching humans is a risk of major importance. Our study showed, using many cases with different parameters and countries, that the management of mining wastewater is vital. Environmental impact assessments and monitoring studies must be carried out before operation and at the closure of the mine. Policies must be in place and ready to apply. Factors of climate, geology, ecology and human health must be considered over a long period. Currently, only the developed countries are applying policies and paying attention to the risk. International assessments and health risk assessments should be carried out according to international standards.

scholarly journals Assessment of Domestic Wastewater Management Practices in the Communal District I of Maradi City, Niger Republic

2015 ◽  
Vol 03 (08) ◽  
pp. 57-65 ◽  
Author(s):  
Ousmane Laminou Manzo ◽  
Hassidou Saidou ◽  
Salamatou Abdourahamane Illiassou ◽  
Saoudé Tidjani Idrissa
Keyword(s):  
Management Practices ◽  
Domestic Wastewater ◽  
Wastewater Management

Climatic effects on Salmonella survival in plant and soil irrigated with artificially inoculated wastewater: preliminary results

2001 ◽  
Vol 43 (12) ◽  
pp. 103-108 ◽  
Author(s):  
M. P. Palacios ◽  
P. Lupiola ◽  
M. T. Tejedor ◽  
E. Del-Nero ◽  
A. Pardo ◽  
...  
Keyword(s):  
Health Risk ◽  
Environmental Conditions ◽  
Management Practices ◽  
Disease Incidence ◽  
Field Conditions ◽  
Natural Soil ◽  
Wastewater Management ◽  
Secondary Effluent ◽  
Waterborne Diseases ◽  
Agricultural Field

The use of wastewater to replace other water resources for irrigation is highly dependent on whether the health risk and environmental impacts entailed are acceptable or not. Total count and species of microorganisms found in wastewater vary widely because of climatic conditions, season, population sanitary habits and disease incidence. Salmonella, one of the genera associated with waterborne diseases, lives in the intestine. Thus, it is widely accepted that they have a limited survival period under environmental conditions. Wastewater management practices and the ability of Salmonella to survival under field conditions would determine the health risk associated with its presence in wastewater. Although chlorination is widely used, there are situations in which Salmonella is able to survive the sudden stress imposed by this technique. The aim of this experiment was to contribute to the study of the climatic and soil effects on pathogen survival under agricultural field conditions in order to assess which were the best wastewater management practices from both health and economic points of view. Five pots filled with soil seeded with Medicago sativa and an automatic weather station were used. A secondary effluent was artificially inoculated with Salmonella. In addition, open plates (filled with sterilised soil) and ultraviolet radiation isolated plates (filled with non-sterilised soil) were used. As soil heat emission contributes to the environmental conditions around the bacteria, standardised meteorological temperature data had to be carefully used in the bacterial survival studies under agricultural conditions. Radiation was the main cause of Salmonella mortality as its effect was more important than natural soil bacteria competence. Higher reduction of Salmonella counts could have been associated with longer spring days. Soil was able to effectively remove Salmonella. Subsurface drip irrigation methods could provide an effective tool to prevent health risk associated with wastewater irrigation.

scholarly journals Transport and retention of phosphorus in surface water in an urban slum area

2013 ◽  
Vol 10 (8) ◽  
pp. 10277-10312
Author(s):  
P. M. Nyenje ◽  
L. M. G. Meijer ◽  
J. W. Foppen ◽  
R. Kulabako ◽  
S. Uhlenbrook
Keyword(s):  
Surface Water ◽  
Management Practices ◽  
Domestic Wastewater ◽  
Suspended Sediments ◽  
Base Flow ◽  
Low Flow ◽  
Surface Erosion ◽  
Wastewater Management ◽  
Bed Sediments ◽  
Total P

Abstract. The transport of excessive phosphorus (P) discharged from unsewered informal settlements (slums) due to poor on-site sanitation is largely unknown. Hence, we investigated the processes governing P transport in a 28 km2 slum-dominated catchment in Kampala, Uganda. During high runoff events and a period of base flow, we collected hourly water samples (over 24 h) from a primary channel draining the catchment and from a small size tertiary channel draining one of the contributing slum areas (0.5 km2). Samples were analyzed for orthophosphate (PO4-P), particulate P (PP), total P (TP) and selected hydro-chemical parameters. Channel bed and suspended sediments were collected to determine their sorption potential, geo-available metals and dominant P forms. We found that P inputs in the catchment originated mainly from domestic wastewater as evidenced by high concentrations of Cl (36–144 mg L-1), HCO3 and other cations in the channels. Most P discharged during low flow conditions was particulate implying that much of it was retained in bed sediments. Retained P was mostly bound to Ca and Fe/Al oxides. Hence, we inferred that mineral precipitation and adsorption to Ca-minerals were the dominant P retention processes. Bed sediments were P-saturated and showed a tendency to release P to discharging waters. P released was likely due to Ca-bound P because of the strong correlation between Ca and total P in sediments (r2 = 0.9). High flows exhibited a strong flush of PP and SS implying that part of P retained was frequently flushed out of the catchment by surface erosion and resuspension of bed sediment. Our findings suggest that P accumulated in the channel bed during low flows and then was slowly released into surface water. Hence, it will likely take some time, even with improved wastewater management practices, before P loads to downstream areas can be significantly reduced.

scholarly journals Is Agricultural Intensification a Growing Health Concern? Perceptions from Waste Management Stakeholders in Vietnam

2018 ◽  
Vol 10 (12) ◽  
pp. 4395 ◽  
Author(s):  
Julia Veidt ◽  
Steven Lam ◽  
Hung Nguyen-Viet ◽  
Tran Tuyet-Hanh ◽  
Huong Nguyen-Mai ◽  
...  
Keyword(s):  
Waste Management ◽  
Risk Perceptions ◽  
Management Practices ◽  
Comparative Method ◽  
Health Concern ◽  
Wastewater Management ◽  
Farmer Knowledge ◽  
Qualitative Thematic Analysis ◽  
Safe Management ◽  
Waste Management Practices

This article characterizes the health risk perceptions toward excreta and wastewater management practices among waste management stakeholders in Vietnam and explores the implications of such perceptions on hygiene behaviors and preventative actions. Key informant interviews (n = 19; 12 women and 7 men) were conducted with farmers, community leaders, researchers, and government representatives in Hanoi and Ha Nam Province. Interviews were audio-recorded with permission, transcribed, and analyzed using a constant comparative method and qualitative thematic analysis. Researchers and government representatives perceived that the lack of knowledge of safe waste management practices among farmers was responsible for the use of “outdated” and often “unsafe” waste management practices. However, many farmers were aware of the health risks and safe hygienic practices but felt that safety measures were impractical and viewed susceptibility to diseases as low risk. Farmers also identified unfavorable climate and working conditions, limited financial capacity, and limited farm space as barriers to adopting safe management practices. At the broader level, inadequate communication between ministries often led to the creation of inconsistent waste management regulations. These barriers create constraints on efforts to improve sustainable waste management practices. Promoting collaboration between sectors, encouraging farmer-to-farmer knowledge sharing, and designing and implementing risk communication strategies that account for risk perceptions of stakeholders are recommended.

Wastewater reuse and treatment options for the dairy industry

2003 ◽  
Vol 3 (3) ◽  
pp. 85-91 ◽  
Author(s):  
K. Baskaran ◽  
L.M. Palmowski ◽  
B.M. Watson
Keyword(s):  
Milk Fat ◽  
Water Reuse ◽  
Management Practices ◽  
Milk Powder ◽  
Solution Treatment ◽  
Environmental Damage ◽  
Wastewater Management ◽  
Milk Processing ◽  
Cleaning Solution ◽  
Processing Plants

Milk-processing plants generate significant quantities of wastewater with relatively high organic matter concentrations on a daily basis. In addition to environmental damage that can result from the discharge of these wastewaters into the natural waterways, the presence of products such as milk solids into wastewater streams represents a loss of valuable product for the plants. This paper presents a review of wastewater management practices employed by six milk-processing plants in Victoria, Australia. In all six plants investigated, milk powder represents a major product. During the milk powder production, water is evaporated, condensed and can be reused for various purposes with a significant impact on water usage. Other major products are anhydrous milk fat, cheese, butter, and UHT milk. The effectiveness of the practices was assessed through two main criteria: first through the water to milk intake ratio, and the waste volume coefficient. Both parameters characterise the plant efficiency in regard of water consumption and water reuse. Information on cleaning chemical usage and recovery was also assessed as part of the review. Significant discrepancies emerge between the plants first due to the products manufactured and water reuse possibilities available in each plant. Second the type of treatment technologies used for condensate and cleaning solution influences the figures. One of the investigated plants is almost self-sufficient for water, emphasising the benefits gained from the use of technologies like membrane separations for condensate and cleaning solution treatment. In some cases, less cost-intensive technologies such as a clarifier are successful to improve cleaning agent recovery.

scholarly journals Current status of textile wastewater management practices and effluent characteristics in Tanzania

2021 ◽  
Author(s):  
J. M. Bidu ◽  
B. Van der Bruggen ◽  
M. J. Rwiza ◽  
K. N. Njau
Keyword(s):  
Wastewater Treatment ◽  
Textile Industry ◽  
Management Practices ◽  
Wastewater Treatment Plants ◽  
Textile Wastewater ◽  
Effluent Treatment ◽  
Current Status ◽  
Wastewater Management ◽  
Wet Processing ◽  
Colored Wastewater

Abstract Textile wastewater from wet processing units is a major environmental problem. Most chemicals including dyes are only partly consumed, resulting in highly colored wastewater containing a variety of chemicals released into the environment. This paper gives information on the current management of textile wastewater in Tanzania. A semiquantitative analysis was done to identify the main types of chemicals used in wet processing units, wastewater characteristics and existing wastewater treatment methods in the textile industry. The performance evaluation of the existing wastewater treatment plants is also discussed. The advantages of integrating constructed wetlands with the existing treatment facilities for textile wastewater are explained. It has been observed that pretreatment and dying/printing of the fabrics are the main two processes that produce wastewater in many textile companies. Main pollutants are chemicals used from pretreatment and materials removed from de-sizing, bleaching and scouring processes. Dyes, printing pigments and dye auxiliaries are the main pollutants from the dyeing/printing process. Most of the textile companies in Tanzania are equipped with effluent treatment plants. Wastewater treatment plants have basically similar units, which are coagulation-flocculation, sedimentation through clarifiers and aerobic reactor. However, their effluents do not meet discharge limits stipulated by the Tanzania Bureau of Standards (TBS).

Water and wastewater management technologies through the centuries

2010 ◽  
Vol 10 (3) ◽  
pp. 337-349 ◽  
Author(s):  
G. De Feo ◽  
P. Laureano ◽  
R. Drusiani ◽  
A. N. Angelakis
Keyword(s):  
Management Practices ◽  
Wastewater Management ◽  
Irrigation Systems ◽  
Modern Times ◽  
Short Summary ◽  
History Of ◽  
Water And Wastewater ◽  
Ancient Civilizations

The aim of this paper is to propose a journey through the history of water and wastewater management technologies in the ancient civilizations, a sort of Appian Way (“Via Appia”, the “regina longarum viarum”) through the Centuries. Moreover, this paper is a sort of short summary of papers presented in the first two IWA Specialty Conferences on Water and Wastewater Technologies in Ancient Civilizations with particular emphasis on the later one. The main topics considered are: aqueducts and tunnels, cisterns and reservoirs, water distributions systems, fountains, toilets and other purgatory structures, drainage and sewerage systems, irrigation systems and, finally, qanats and other similar systems. Upon completing the journey, we have arrived at the conclusion that the meaning of sustainability in modern times should be revaluated in light of ancient hydraulic water and wastewater works and management practices.

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