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Thursday, July 23, 2020 | History

2 edition of Potential for treatment of agricultural drain water with microalgal-bacterial systems found in the catalog.

Potential for treatment of agricultural drain water with microalgal-bacterial systems

William J. Oswald

Potential for treatment of agricultural drain water with microalgal-bacterial systems

by William J. Oswald

  • 245 Want to read
  • 34 Currently reading

Published by U.S. Bureau of Reclamation, Mid-Pacific Region in Sacramento, Calif .
Written in English

    Subjects:
  • Drainage -- California -- San Joaquin Valley.,
  • Agricultural wastes -- Environmental aspects.,
  • Sewage -- Purification -- Biological treatment.

  • Edition Notes

    Statementprepared for U.S. Department of the Interior, Bureau of Reclamation by William J. Oswald.
    ContributionsUnited States. Bureau of Reclamation. Mid-Pacific Regional Office., San Joaquin Valley Interagency Drainage Program.
    The Physical Object
    Paginationvii, 69, [9] p. :
    Number of Pages69
    ID Numbers
    Open LibraryOL23077252M

    Natural wastewater treatment systems are used all over the world for the purification of wastewater from industry, household and agriculture. In Italy the potential is high due to the presence of several small or medium communities, the favourable climatic conditions, the availability of free lands, the growing interest towards treated water. The second goal for meeting agricultural water quality standards is applicable to all subareas. Treatment of drainage water to be reused for agricultural supply would require reducing boron ( µg/L) and salt (TDS = mg/L and EC = µS/m) levels to meet agricultural water quality goals (Ayers and Westcot, ) or reduce the boron.

    Microalgal–bacterial consortia are considered an alternative method to conventional wastewater treatment processes with several benefits, such as low oxygen production cost and reduced emission of carbon dioxide resulting from photosynthetic activity. Besides, microalgae effectively remove various emerging contaminants and heavy metals that are hardly removed by conventional wastewater Cited by: 2. Chapter 6: Wastewater Treatment and Discharge IPCC Guidelines for National Greenhouse Gas Inventories soils, in Chap N2O Emissions from Managed Soils, and CO2 Emissions from Lime and Urea Application, in Volume 4 of the Agriculture, Forestry, and Other Land Use (AFOLU) Sector.

    The EPA first published a Water Treatment Manual on Disinfection in Since the publication of this manual there have been significant developments both in terms of the technology and understanding of the disinfection of drinking water and in the supervisory role of the EPA in the drinking water area. ThisFile Size: 2MB. 5 Awesome Solutions to Water Pollution. Dirty and polluted water is the world’s primary health concern and persists to pose threats to the survival of humanity and quality of aquatic life. Many water resources are more and more becoming vulnerable to pollution by toxic chemicals, dirt, garbage, and pathogens.


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Potential for treatment of agricultural drain water with microalgal-bacterial systems by William J. Oswald Download PDF EPUB FB2

The use of microalgal–bacterial consortium for wastewater treatment can be promoted as a cost-efficient biotechnology in terms of high organic matter and nutrients removal by aeration costs elimination, the major drawback so far being represented by the poor microalgae cells removal from effluent.

Subsequently, many investigations demonstrated that microalgal-mediated wastewater treatment process could concomitantly produce biofuels as well as high value-added products (Quijano et al.

Accordingly, microalgal can be used to play a dual role in the wastewater treatment and biomass production for diverse applications. h of batch treatment. the use of microalgal–bacterial consortium for wastewater treatment can be promoted as a cost-efficient biotechnology in terms of high organic matter and nutrients removal by aeration costs elimination, the major drawback so far being represented by the poor microalgae.

Fig. Wastewater treatment by means of microalgal-bacterial processes and resource recovery. Oxygen is photosynthetically produced by microalgae in the presence of light and CO2, which is used by bacteria to oxidize organic matter, producing in return CO 2 for microalgae by:   A part from being the largest consumer of water, agriculture is also a major water polluter.

Saline irrigation return-flows or drainage containing agrochemical residues are serious contaminants for downstream water users. Agricultural nitrate is contaminating groundwater.

They have been proposed as a potential secondary treatment system Cited by: on-farm water management to minimize water losses by evaporation; use of improved crop varieties; use of improved cropping systems and agronomics, such as conservation tillage; development of financial frameworks to provide incentives for the adoption of best practices and new technology.

In wastewater treatment systems designed to remove nutrients, mainly dissolved nitrogen and phosphorus, is becoming an important step of treatment. Discharge of these nutrients into sensitive water bodies leads to eutrophication by stimulating the growth of unwanted plants such as algae and aquatic by: 6.

Water treatment 6. WATER TREATMENT Introduction Water can be contaminated by the following agents: Pathogens – disease-causing organisms that include bacteria, amoebas and viruses, as well as the eggs and larvae of parasitic worms.

Harmful chemicals from human activities (industrial wastes, pesticides, fertilizers). well-run water distribution systems experience about 25–30 breaks per miles of piping per year (Deb et al., ). Haas () reported results from a survey of water systems that showed a range of average main breaks of per year for systems serving more thanpeople, to per year for systems serving fewer than people.

Farm water quality and treatment. The most commonly used aerators are cascade aerators. The simplest cascade aerator is a series of steps that spread the water and allow it to fall from one level to another. A one-metre head (4 to 5 steps of 20 cm height) is usually sufficient, but more steps will give a more complete aeration.

Increasing the. Additional topics of interest include interactions between agricultural water management and the environment (flooding, soil erosion, nutrient loss and depletion, non-point source pollution, water quality, desertification, and the potential implications of global climate change for agricultural water management), and the institutional and.

Nitrogen rich wastewaters ( mg N L-1) are usually produced by municipal, industrial and agricultural wastes, such as effluents from anaerobic represent a risk to the environment due to the high nutrient concentrations (nitrogen and phosphorous), which can cause eutrophication of water bodies, deteriorating the quality of the by: 3.

municipal sewage and in a pond whose wastewater was agricultural drainage. Data of water temperature (°C) and solar radiation (w/m²) were collected from two Northern California Nitrite is a potential public health hazard in water consumed by infants (Sedlak ).

In the The system of microalgal-bacterial treatment ponds has been File Size: 51KB. Agricultural water is water that is used to grow fresh produce and sustain livestock. The use of agricultural water makes it possible to grow fruits and vegetables and raise livestock, which is a main part of our diet.

Agricultural water is used for irrigation, pesticide. and fertilizer applications., crop cooling (for example, light. 2School of Agriculture and Food Sciences, The University of Queensland, Brisbane Qld, Australia.

sense microalgal-bacterial systems have been gaining special attention in last year’s. In these Waste water treatment (removal of any contaminants) Pretreatment of waste (Enzymatic. They outline the objectives of stormwater management and the available methodologies and concepts for the planning, design, and operation of stormwater drainage systems.

In addition to the water quantity aspects of stormwater management, the publication also describes some of the techniques that can be applied for quality management of stormwater.

Irrigation water can come from groundwater, through springs or wells, surface water, through rivers, lakes, or reservoirs, or even other sources, such as treated wastewater or desalinated water. As a result, it is critical that farmers protect their agricultural water source to minimize the potential for contamination.

Introduction. Soil, is the soul of infinite life that promotes diverse microflora. Soil bacteria viz., Bacillus, Pseudomonas and Streptomyces etc., are prolific producers of secondary metabolites which act against numerous co-existing phytopathogeic fungi and human pathogenic bacteria (Pathma et al.

Earthworms are popularly known as the “farmer’s friend” or “nature’s plowman”.Cited by: Water, an international, peer-reviewed Open Access journal.

Dear Colleagues, Agriculture’s first challenge is to produce enough food for a continued increase in population, in a context where the increased demand for food is associated with ever-growing competition for water and land, climate change and uncertainty, man-made and droughts of water scarcity, poor supply reliability, decline in.

Contributions from academia and industrial case studies make this book a comprehensive survey of current progress in microalgae biotechnology. So this book will be of interest to active people in biology, biotechnology, and engineering in the area of sustainable production of high value products or mass production of food and fuel for the future.5/5(1).

Every municipal water system has to have a water supply source that is both adequate and reliable for the city to be served. The primary water source of water for Washington, DC, is the Potomac River.drain wetlands for urban development C.

be used without treatment in place of tap water C. usually be used with little or no treatment for home use D. use water-saving irrigation methods C. create groundwater replenishment systems D.

install high-tech water filtration systems E. both A and B. c.The number of rolls needed to construct a uniform buried drainage system for a nearly level 20 hectare field will depend primarily on _____.

The most common form of on-site waste water treatment for homes not hooked up to a sewer lines is the _____. The water potential in soils is generally considered lower than that in the atmosphere.