نتایج جستجو برای: isndustrial wastewater sludge

تعداد نتایج: 45802  

2016
Lech Smoczyński Harsha Ratnaweera Marta Kosobucka Michał Smoczyński Sławomir Kalinowski Knut Kvaal

The structure of sludge is closely associated with the process of wastewater treatment. Synthetic dyestuff wastewater and sewage were coagulated using the PAX and PIX methods, and electro-coagulated on aluminium electrodes. The processes of wastewater treatment were supported with an organic polymer. The images of surface structures of the investigated sludge were obtained using scanning electr...

2010
AR Mesdaghinia AH Mahvi R Saeedi H Pishrafti

BACKGROUND A new biological domestic wastewater treatment process, which has been presented these days in activated sludge modification, is Upflow Sludge Blanket Filtration (USBF). This process is aerobic and acts by using a sludge blanket in the separator of sedimentation tank. All biological flocs and suspended solids, which are presented in the aeration basin, pas through this blanket. The p...

2015
M. Bob S. Azmi M. Abd Halim Z. Ujang

In this research, the formation and development of aerobic granular sludge (AGS) for domestic wastewater treatment application in hot climate conditions was studied using a sequencing batch reactor (SBR). The performance of the developed AGS in the removal of organic matter and nutrients from wastewater was also investigated. The operation of the reactor was based on the sequencing batch system...

Journal: :Water environment research : a research publication of the Water Environment Federation 2015
Yuan Li Xiaoyan Qu Ruoren Yu Keisuke Ikehata

A review of the literature published in 2014 on topics relating to public and environmental health risks associated with wastewater treatment, reuse, and disposal is presented. This review is divided into the following sections: wastewater management, microbial hazards, chemical hazards, wastewater reuse, wastewater treatment plants, wastewater disposal, and sludge and biosolids.

Journal: :international journal of environmental research 0
t. onodera center for regional environmental research, national institute for environmental studies, ibaraki 305-8506, japan s. sase center for regional environmental research, national institute for environmental studies, ibaraki 305-8506, japan- department of civil and environmental engineering, nagaoka university of technology, niigata 940-2188, japan p. choeisai department of environmental engineering, khon kaen university, khon kaen 40002, thailand w. yoochatchaval department of environmental engineering, king mongkut’s university of technology thonburi, thailand h. sumino department of civil engineering, gifu national college of technology, gifu 501-0495, japan t. yamaguchi department of civil and environmental engineering, nagaoka university of technology, niigata 940-2188, japan y. ebie

a combination of an acidification reactor and an up-flow staged sludge bed (ussb) reactor wasapplied to treatment of molasses wastewater. the ussb, equipped with three gas solid separators, wasselected because of superior organic removal by means of good retention of granular sludge. the combinedsystem was continuously operated at mesophilic (35°c) conditions for 600 days. the ussb achieved a h...

1997
Hussein I. Abdel-Shafy

Presents the findings of a study conducted to examine the efficiency of the combined anaerobic-aerobic reactors for the treatment of three different tannery industrial wastewaters, focusing on the fate of chromium and other associated metals. Examines elimination rates of such metals with respect to each successive treatment process. Discusses the correlation between the chemical characteristic...

2016
Wenda Tao Xu-Xiang Zhang Fuzheng Zhao Kailong Huang Haijun Ma Zhu Wang Lin Ye Hongqiang Ren

To understand the diversity and abundance of antibiotic resistance genes (ARGs) in pharmaceutical wastewater treatment bioreactors, the ARGs in sludge from two full-scale pharmaceutical wastewater treatment plants (PWWTPs) were investigated and compared with sludge samples from three sewage treatment plants (STPs) using metagenomic approach. The results showed that the ARG abundances in PWWTP s...

2014
Reti Hai Yulin Wang Xiaohui Wang Zhize Du Yuan Li Wei-Chun Chin

BACKGROUND The increasing use of multiwalled carbon nanotubes (MWCNTs) will inevitably lead to the exposure of wastewater treatment facilities. However, knowledge of the impacts of MWCNTs on wastewater nutrient removal and bacterial community structure in the activated sludge process is sparse. AIMS To investigate the effects of MWCNTs on wastewater nutrient removal, and bacterial community s...

2012
S. Sriram

Wastewater is the spent or used water containing dissolved or suspended solids such as pollutants and microbes, including nutrients. The wastewater discharged into the water bodies are hazardous to environment and cause various health problems in human beings. Eutrophication is one such major environmental problem caused due to the discharge of nutrient rich wastewater into the nearby water bod...

2005

A suspension of wastewater and treatment organisms in an aerated tank is known as the activated sludge process. The activated sludge process can be used for onsite wastewater treatment, generally requiring the addition of an air pump to deliver oxygen to the system and provide mixing energy. Suspended growth treatment systems can be secondary only (require supplemental primary treatment) or com...

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