نتایج جستجو برای: keywords waste treatment

تعداد نتایج: 3305944  

2011
Tunku Abdul Rahman

Dye wastes represent one of the most problematic groups of pollutants because they can be easily identified by the human eye and are not easily biodegradable. This literature review paper highlights and provides an overview of dye waste treatments performed over the three years period from 2008–2010. Noteworthy processes for the treatment of dye waste include biological treatment, catalytic oxi...

2003
PERRY L. McCARTY

Anaerobic filters (AFs) and upflow anaerobic sludge blanket (UASB) reactors are finding wide-scale acceptance for treating various types of wastewater. They are frequently used for medium to high strength wastewater (2,000 to 20,000 mg/L COD), but have fewer applications to low strength wastewater (< 1,000 mg/L COD). In order to understand the applicability of anaerobic treatment for low streng...

بهروزنام , بهنام , دادی, موناد, زاده باقری, مسعود, سعیدزاده, آرزو ,

Due to the excessive use of chemical fertilizers and also the lack of adequate information on the growth responses of ornamental plants to bio-fertilizers and municipal solid waste compost, this investigation was carried out on Zinnia. Therefore, a field experiment was conducted in complete randomized block design with three replications. Fertilizers included municipal solid waste compost, phos...

Journal: :محیط شناسی 0
سعید گیتی پور دانشیار/ دانشگاه تهران فاطمه اکبرپورسراسکانرود دانشجوی دوره دکتری/ دانشگاه تهران سعید فیروزبخت دانشجو/دانشگاه تهران

introduction medical waste contains highly toxic metals, toxic chemicals, pathogenic viruses and bacteria, which can lead to pathological dysfunction of the human body. the hazards of exposure to hospital waste can range from gastro-enteric, respiratory, and skin infections to more deadly diseases such as hepatitis b & c, and hiv/aids. additionally, medical waste contains potentially harmful mi...

2012

Contamination types, levels and their behavior within drilling wastes is determined by the local geological conditions and drilling mud design; notably lubrication fluids, weighting agents and anti-foaming agents. Such additives can contain potentially toxic elements such as aluminum and barium. Besides being contaminated, drilling wastes often have a high pH due to the addition of lime, causti...

2014
C. R. Mohanty

In view of fast paced economic growth accompanied with rapid urbanisation, management of municipal solid waste has emerged as one of the major environmental challenges of present times. Indian cities are often characterized by poorly rendered services including waste management-the most ignored of all basic services, on account of various reasons. The situation worsens with increasing populatio...

2014
M. L. Anoop Kumar Ramana Reddy

Due to the rapid industrialization taking place globally, the problems generated are acute shortage of construction material and increasing in productivity of wastes. The production and consumption of plastic and the rate at which solid plastic waste (SPW) are created have increased considerably. Plastics constitute 12.3% of total waste produced most of which is from discarded water bottles. Th...

ژورنال: طلوع بهداشت یزد 2014
احرام پوش, محمد حسن, سلمانی, محمد حسین, عابدی, محمد, مظفری, سید احمد,

Abstract Introduction: Researches have been shown if water and wastewater treatment systems properly managed, it provides a major part of water reservoirs for the needs of developing countries. Because of the uncontrolled increase in concentrations of fine particle materials, organic and inorganic compounds and especially heavy metals in water, the conventional methods of treatment is not able...

Journal: :مجله بهداشت محیط و توسعه پایدار 0
mohammad faramarzian zahra derakhshan mohammad taghi ghaneian mohammad hassan ehrampoush

background: the modeling aims to simulate or optimize a process in physical, chemical or biological environments and the derived model will provide a considerable assistance to generate data and predict unknown condition, in case of sufficient suitability. unsuitable disposal and elimination of waste tires have polluted the environment and human life areas, it also have caused removal of a huge...

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