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排序方式: 共有55条查询结果,搜索用时 15 毫秒
1.
Anju A. Kenge Ping H. Liao Kwang V. Lo 《Journal of environmental science and health. Part. B》2013,48(6):606-612
The microwave enhanced advanced oxidation process (MW/H2O2-AOP) was used to treat separated solid dairy manure for nutrient release and solids reduction. The MW/H2O2-AOP was conducted at a microwave temperature of 120°C for 10 minutes, and at three pH conditions of 3.5, 7.3 and 12. The hydrogen peroxide dosage at approximately 2 mL per 1% TS for a 30 mL sample was used in this study, reflecting a range of 0.53–0.75 g H2O2/g dry sludge. The results indicated that substantial quantities of nutrients could be released into the solution at pH of 3.5. However, at neutral and basic conditions only volatile fatty acids and soluble chemical oxygen demand could be released. The analyses on orthophosphate, soluble chemical oxygen demands and volatile fatty acids were re-examined for dairy manure. It was found that the orthophosphate concentration for untreated samples at a higher % total solids (TS) was suppressed and lesser than actual. To overcome this difficulty, the initial orthophosphate concentration had to be measured at 0.5% TS. 相似文献
2.
The present study aims to identify the potential habitat for swamp deer (Cervus duvauceli duvauceli Cuvier) in Jhilmil Jheel Conservation Reserve in the Uttarakhand province of India using multi-criteria analysis. The study
area represents one of the last remnant habitats of the flagship species, the swamp deer in Uttarakhand, which is considered
as vulnerable. The study showed that only 6.08% of the study area (225 km2) was highly suitable to suitable for the swamp deer. An area of 135.52 km2 (60.23%) turned out to be moderately suitable. Within the officially designated Conservation Reserve (area 37.84 km2), 10.91% (4.13 km2) area was found highly suitable to suitable, while 74.19% (28.07 km2) happens to be moderately suitable. Only 14 km2 area, which was found as suitable habitat for swamp deer falls short of the space required by a population of 134 animals.
The problem could be mitigated if the agricultural land (2.47 km2) adjacent to the Jhilmil Jheel is brought under the Reserve management. This would provide additional area to meet the fodder
requirement. The study brings out a particularly grim situation with limited options for conservation and management of the
swamp deer in the Indo-Gangetic plains. It also emphasizes the role of geospatial techniques in quick appraisal of habitat
attributes and identification of potential sites for protected areas. 相似文献
3.
Abid Ali Khan Rubia Zahid Gaur V.K. Tyagi Anwar Khursheed Beni Lew Indu Mehrotra A.A. Kazmi 《Resources, Conservation and Recycling》2011,55(12):1232-1251
The upflow anaerobic sludge blanket (UASB) process is reported to be a sustainable technology for domestic wastewaters treatment in developing countries and for small communities. However, the inability of UASB process to meet the desired disposal standards has given enough impetus for subsequent post treatment. In order to upgrade the UASB based sewage treatment plants (STPs) to achieve desired effluent quality for disposal or for reuse, various technological options are available and broadly differentiated as primary post-treatment for the removal of organic and inorganic compounds and suspended matter; secondary post-treatment for the removal of hardly degradable soluble matter, colloidal and nutrients; and polishing systems for removals of pathogens. Hence, this paper discusses the different systems for the treatment of UASB reactor effluent treating sewage. Additionally, a comparative review, an economic evaluation of some of the emerging options was conducted and based on the extensive review of different integrated combination, i.e. UASB-different aerobic systems, a treatment concept based on natural biological mineralization route recognized as an advanced technology to meet all practical aspects to make it a sustainable for environmental protection, resource preservation and recovering maximum resources. 相似文献
4.
Gaur Vivek Kumar Gupta Shivangi Pandey Ashok 《Environmental science and pollution research international》2022,29(41):61821-61837
Environmental Science and Pollution Research - Increasing petroleum consumption and a rise in incidental oil spillages have become global concerns owing to their aquatic and terrestrial toxicity.... 相似文献
5.
Kumar A Baroth A Soni I Bhatnagar P John PJ 《Environmental monitoring and assessment》2006,116(1-3):1-7
Anupgarh is the most fertile area of Rajasthan state where a variety of seasonal crops are grown. The availability of three
manmade canals has enhanced the agricultural activities in this area. The farmers use huge amounts of pesticides to increase
the crop productivity. Exposure of humans to these hazardous chemicals occurs directly in the fields and indirectly due to
consumption of contaminated diet, or by inhalation or by dermal contact. The organochlorine pesticides are reported to be
lipophilic and their presence in human milk and blood has been documented in different parts of the world. Blood and milk
samples were collected from lactating women who were divided into four groups on the basis of different living standards viz
residence area, dietary habits, working conditions and addiction to tobacco. The level of total organochlorine pesticides
in blood ranged from 3.319mg/L—6.253mg/L while in milk samples it ranged from 3.209Mdash;4.608 mg/L. The results are in concurrence
with the reports from other countries. 相似文献
6.
7.
Jain A Mohan J Singh M Goswami BK 《Journal of environmental science and health. Part. B》2008,43(8):686-691
This investigation was undertaken to determine the effect of culture filtrates of different isolates of Fusarium oxysporum f. sp. lycopersici on mortality of Meloidogyne incognita juveniles and egg hatching. It was observed that different concentrations including standard extract (S.E), 1:10 and 1:100 dilutions of all fungal filtrates inhibited egg hatch when compared with control. Minimum mortality and maximum hatching was observed in BRT (showing least mortality) isolate of F. oxysporum, while maximum mortality and minimum egg hatching was recorded in BGT (showing maximum mortality) isolate. Larval mortality was decreased with a decrease in concentration and the least mortality was observed in 1:100 when compared with SE and 1:10. The potentiality of both the isolates (BRT and BGT) against root-knot nematode M. incognita was confirmed by the pathogenicity test on tomato. These observations confirmed that F. oxysporumisolates possesses variability in pathogenicity ranging from pathogenic to bio-control agent. The plants inoculated with BRT isolate failed to show wilt symptoms while plants inoculated with BGT isolate showed wilt indices. 相似文献
8.
Narayanan Siju Ellickal Rehuman Nisha Abdul Harilal Seetha Vincent Anju Rajamma Rajalakshmi Ganesan Behl Tapan Uddin Md. Sahab Ashraf Ghulam Md Mathew Bijo 《Environmental science and pollution research international》2020,27(35):43542-43552
Environmental Science and Pollution Research - Zinc (Zn) is an essential trace element for most organisms, including human beings. It plays a crucial role in several physiological processes such as... 相似文献
9.
Kumar Rajnish Sharma Anju Srivastava Janmejai Kumar Siddiqui Mohammed Haris Uddin Md. Sahab Aleya Lotfi 《Environmental science and pollution research international》2021,28(30):40431-40444
Environmental Science and Pollution Research - The outbreak of novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has affected the entire world with its infectious spread and... 相似文献
10.
Biju A. George Hector M. Malano Ahmad Raza Khan Anju Gaur Brian Davidson 《Environmental Modeling and Assessment》2009,14(6):691-704
To keep pace with population and economic growth, the city of Hyderabad, India, will need to identify and develop new supply
sources almost continually. Increasing population growth rate, declining surface water resources, overexploitation of groundwater,
deterioration of ground water quality and poor sewage treatment are the major water-related issues in Hyderabad. This paper
reviews the current situation facing policy makers who need to come to terms with the problem of restricted water supply and
increasing demand in an urban centre such as Hyderabad, India. The City Water Balance model developed in this study can be
used to analyse different scenarios that include water conservation, urban wastewater reuse and improvement of distribution
and conveyance efficiency. Water conservation programs, which include a 5% conveyance efficiency improvement, reusing 90 million
cubic metres (MCM) of urban runoff and adoption of water harvesting by 0.5 million households together with recycling 120
MCM of wastewater recycling wastewater would be sufficient to meet the water demand by 2031, if the population grows at a
rate of 2.5%. 相似文献