Oxidation ponds in arid and semi-arid regions

by Khurshed Ahmed

Publisher: Pakistan Society of Bio-chemists, Division of Biochemistry, Institute of Chemistry, University of the Punjab in Lahore, Pakistan

Written in English
Published: Pages: 107 Downloads: 825
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  • Developing countries.


  • Sewage lagoons -- Developing countries.,
  • Arid regions -- Developing countries.

Edition Notes

  Meeting these requirements in arid and semi-arid environments might include production of Brassica species for Se contaminated regions. REFERENCES CITED (1.)Ahmad, R., S. Ismail, and D. Khan. Use of highly saline water for irrigation at sandy soils. In: R. Ahmad and A. San Piedro, (eds.), Prospects for Biosaline Research. Fish farms are sprouting up in the unlikeliest of places - the dry arid lands of Ukambani. Yes, hundreds of fish ponds are being constructed in the region and other arid and semi-arid lands thanks. Leaching of basic cations such as Ca, Mg, K and Na from the soil by heavy rainfall leaving acidic cations to remain in the soil. This is the reason for the occurance of acidic soils in humid regions and alkaline or neutral soils in arid regions. Oxidation of NH + 4 and S 2-in soils by micro-organisms. NH + 4 + 3O 2 = 2NO-2 + 4 H + + H 2 O.   Salinity stress is one of the most vital abiotic stresses which results in significant damages of agricultural production, particularly in arid and semi-arid areas of the world. Salinity causes by high accumulation of soluble salt, especially NaCl in soil and water. Salinity hampers the growth and survival of many field crops such as rice, wheat, maize, cotton, sugarcane, and sorghum.

  Unfortunately, arid and semi-arid Patagonia have very few protected areas. Moreover, pond monitoring or restoration programs are rare; therefore this study can be considered as the first step for the use of aquatic invertebrates as potential candidates for biomonitoring in Patagonia. IN SEMI-ARID WETLANDS WITH CONTRASTING WATER AND SALINITY REGIMES. Sébastien Lamontagne 1,3,4, Warren Hicks 2,3, Rob Fitzpatrick 1,3 and Steve Rogers 1,3. 1 CSIRO Land and Water, Private Mail Bag No. 2, Glen Osmond, SA Australia. 2 CSIRO Land and Water, GPO Box Canberra, ACT Australia. 3. Heat Stress – Vulnerability, health impacts, and coping strategies in rural communities in the semi-arid region of Maharashtra, India. This study addresses socially differentiated questions on how risks and responses to heat stress vary among the different social categories in the rural communities in the semi-region of Maharashtra and.   Greywater is a valuable additional water source for agriculture in arid and semi‐arid countries subject to water scarcity. However, the impacts of applying greywater to agricultural land in the Sudano‐Sahelian regions are not adequately understood.

But shortage of irrigation water sources in arid and semi- arid regions brings out the issue of using treated wastewater to meet the demand for agriculture Waste stabilization ponds are large shallow basins enclosed by earthen embankments Since these processes are unaided by man the rate of oxidation is rather slow and as a result long. In arid zones, precipitation may be 5 to 20 percent of PET; semi-arid regions receive more precipitation, and hyper-arid regions less, in relation to PET. Features of a Desert Roughly one-third of Earth's land surface is arid or semi-arid. Alfalfa in China is mostly planted in the semi-arid or arid Northwest inland regions due to its ability to take up water from deep in the soil and to fix atmospheric N2 which reduces N fertilizer application. However, perennial alfalfa may deplete soil water due to uptake and thus aggravate soil desiccation. The objectives of this study were (1) to determine the alfalfa forage yield, soil. The North American Arid West Emergent Marsh system includes wetlands with permanent to semi-permanent standing water that support aquatic, submerged, and coarse emergent plants. Natural marshes may occur in depressions (impounded ponds or kettle ponds), on lake fringes, or within riparian and floodplain areas as beaver ponds, backwater channels.

Oxidation ponds in arid and semi-arid regions by Khurshed Ahmed Download PDF EPUB FB2

Author(s): Ahmed,Khurshed; Chughtai,M I D Title(s): Oxidation ponds in arid and semi-arid regions/ by Khurshed Ahmed and M.I.D. Chughtai. Country of Publication: Pakistan Publisher: Lahore, Pakistan: Pakistan Society of Bio-chemists, Division of Biochemistry, Institute of Chemistry, University of.

sign, and cost issues related to using oxidation ponds for wastewater treatment. Many of the topics have applications at either full scale or in isolation for laboratory analysis. Oxidation ponds have many advantages. The oxidation pond treatment process is natural, because it uses mi-croorganisms such as bacteria and algae.

This makes theCited by: Arid and semi-arid regions are defined as areas where water is at its most scarce. The hydrological regime in these areas is extreme and highly variable, and they face great pressures to deliver and manage freshwater resources.

Water resources of small impoundments in dry regions / Kenneth G. Renard --Limnologic features of reservoirs in arid lands / Gerald A. Cole --Pond limnology, with applications to arid-area ponds / William J. Clark --Fish communities of small impoundments of semi-arid areas / Richard L.

Noble --Development of high pH in mountain Lakes of the. In arid and semi-arid regions, the fast decomposition of soil organic matter caused several agro-environmental problems associated with the progressive degradation and decline in soil quality.

Village on the River Niger at Gao in eastern Mali. The Sahel was hit by drought during the second half of the 20th century but precipitation has resumed since the s. The Sahel-Sudanian strip that runs from Senegal to Sudan is considered by IPCC experts as being one of the parts of the world that is most vulnerable to climate change.

The temperature of this semi-arid region of Africa has. In strongly-evaporative environments of semi-arid/arid regions, the increase in rainfall intensity, water content and flow regime has strong influence on pyrite/sulfidic minerals oxidation resulting in release of acidity, sulfate, toxic elements and other ions in aquatic ecosystems, whereas the reduced rainfall will lessen the oxidation of.

Oxidation pond is a practical and effective method for the wastewater treatment of domestic and trade wastes in the tropical areas. The operation of a stabilization pond does not require much labour-power. It is an economical method for the treatment of wastewater from small and isolated units.

Field of quinoa in the Salar de Uyuni (Bolivia). Adapted to arid environments and poor or saline soils, quinoa is also highly resistant to cold, frost and ists are studying it to test its resistance to climate events. AAfter being excluded, agriculture is gradually gaining a position in climate policy negotiations.

The IPCC Fifth Assessment Report assessed the potential reduction of. Pond rehabilitation and upgrading is described in Section 8. Wastewater storage and treatment reservoirs, which are appropriate in arid and semi-arid areas when treated wastewater is in high demand for crop irrigation, are discussed in Section 9.

Integrated Urban Water Management: Arid and Semi-Arid Regions – the outcome of UNESCO’s International Hydrological Programme project on the topic – examines the integrated management of water resources in urban settings, focusing on issues specific to arid and semi-arid regions and on what make them different from other regions.

This book introduces state-of-the-art approaches, methods and research, focusing on smart management of rainwater. In addition, it provides an overview of projects from across the world, illustrating how rainwater-smart management has been implemented in drylands. Oxidation pond Oxidation ponds, also called lagoons or stabilization ponds, are large, shallow ponds designed to treat wastewater through the interaction of sunlight, bacteria, and algae.

Algae grow using energy from the sun and carbon dioxide and inorganic compounds released by bacteria in water. Arid and semi-arid regions cover about 30% of the earth's surface (Lal and Kimble, ). Semi-arid regions cover many provinces in China, holding a carbon pool that should not be ignored.

Lal () estimated the total SOC pool of soils of the global drylands, which is % of the world's SOC stock, could play an important role. In addition. In arid and semi-arid regions, where water scarcity is almost endemic, artificial recharge of groundwater by treated wastewater is one of the most effective techniques for the augmentation of.

the development of design equations for fracultative waste stabilization ponds in semi-arid areas. Authors: JP ARTHUR Source: Proceedings of the Institution of Civil Engineers, Vol Issue 1, 1 Dec (–). The saguaro cactus is the most obvious manifestation of this arid habitat.

Without water, the flowers cannot thrive in the arid climate. Since about 86% of the wooded lands have been made reservations, and work has been done also to preserve the forest areas in the mountains in the south-east, from which there are few streams of permanent flow to the enclosing arid valleys.

The third zone. The efficient use of water in irrigation: principles and practices for improving irrigation in arid and semi-arid regions (English) Abstract. This book is in the nature of a primer, providing a basic review and analysis of the principles governing soil-crop-water-climate relationships, irrigation and the efficient utilization of water in arid and semiarid regions.

Rapid oxidation of sulphides on mine waste produces iron-bearing sulphate and other compounds as secondary minerals (Nordstrom and Alpers ). Temperature and humidity control evaporation. In regions with a semi-arid climate where the water table is low and there are annual rainy and dry seasons, sulphate salts growth reaches a.

Recommendations for routine effluent quality monitoring and WSP performance evaluation are also included. A description of pond rehabilitation and upgrading is followed by a discussion of wastewater storage and treatment reservoirs, which are appropriate in arid and semi-arid areas when treated wastewater is in high demand for crop irrigation.

TYPES OF WEATHERING THAT TAKES PLACE IN AN ARID AREA Weathering is the break up of rocks. In desert regions because there is very little water, weathering tends to be superficial – confined to the surface Weathering is greater in Semi Arid areas because semi arid regions have a slightly higher precipitation.

The Thar Desert, also known as the Great Indian Desert, is a large arid region in the northwestern part of the Indian subcontinent that covers an area ofkm 2 (77, sq mi) and forms a natural boundary between India and is the world's 17th largest desert, and the world's 9th largest hot subtropical desert.

About 85% of the Thar Desert is located within India, with the. The revival of water bodies in the semi-arid region has also improved the groundwater table and quenched the thirst of several parched blocks.

Benefits and Challenges of Dugout Rainwater Harvesting Ponds in Tigray Region, Ethiopia Gebremedhin Berhane. Innovative Rainwater Harvesting Technologies for Pastoralists in Arid and Semi-arid Areas: A Case Study in Oromiya Region, Ethiopia Alemayehu Haddis.

The results suggest that an initial rapid release of organic-associated Se, along with a long-term release of Se would be expected with C oxidation, due to the reversion of the former Kesterson wetland evaporation pond ecosystem to a native semi-arid grassland.

I think that a pond is especially necessary in an arid climate as your"water bank" in the event of hard times. In fact even in my part of the world, the Chihuhuan Desert, there is rain.

years ago it averaged slightly higher than 12 inches per year, lately its more like 6 inches with our current droughty situation.

This model describes the relation between (NDVI, SAVI) and SOM in both arid and semi-arid regions. However, the relationship is relatively different in arid areas from that in semi-arid areas (R 2 =p semi-arid. Most of the country is in a semi-arid zone, with distinct short winter (wet) and long summer (dry) seasons, and a low annual rainfall of around mm (an overall multi-annual average).

The country can be divided into two climatic regions: (1) the southern arid/semi-arid areas have very low. Understanding future pit lake water quality has become an important element in permitting open pit mines, due to the potential long-term water quality impacts on ecological receptors.

Quantifying pyrite oxidation kinetics is an integral part of this analysis. To date, constraints resulting from low moisture content in the arid regions of the southwestern U.S.

that host many large, disseminated. Arid regions comprise approximate about 30% of Earth's land area. The largest desert region includes the African Sahara and Arabian Peninsula where large sand seas dominate the landscape (Figure ). Nearly 35% of the land in United States is considered arid or semi-arid climates.

Click on thumbnail images to get a larger view. Fig. This study focused on investigating the hydrologic and pollutant removal performance of field-scale LID/GI systems in arid/semi-arid climates. Nine typical practices were reviewed: rainwater harvest system, detention pond, retention pond, bioretention, media filter, porous pavement, vegetated swale/buffer/strip, green roof, and infiltration.The most common RWH techniques in arid and semi-arid regions are dams, terracing, ponds and pans, percolation tanks and Nala bunds.

Tunisia is an example of the Mediterranean countries that are facing scarcity of water which will be worsened due to climate change, growing demand for water in agricultural and urban development and an expanding.The revival of water bodies in the semi-arid region has also improved the groundwater table and quenched the thirst of several parched blocks.

A study by jal nigam (Agra division) conducted in.