scholarly journals The role of ozone combined with UVC/H2O2 process for the tertiary treatment of a real slaughterhouse wastewater

2021 ◽  
Vol 289 ◽  
pp. 112480
Author(s):  
Pello Alfonso-Muniozguren ◽  
Ana I. Gomes ◽  
Devendra Saroj ◽  
Vítor J.P. Vilar ◽  
Judy Lee
Keyword(s):  
Tertiary Treatment ◽  
Slaughterhouse Wastewater

Role of hydraulic retention time and granular medium in microbial removal in tertiary treatment reed beds

2003 ◽  
Vol 37 (11) ◽  
pp. 2645-2653 ◽  
Author(s):  
Joan Garcı́a ◽  
Joan Vivar ◽  
Maria Aromir ◽  
Rafael Mujeriego
Keyword(s):  
Retention Time ◽  
Granular Medium ◽  
Hydraulic Retention Time ◽  
Tertiary Treatment ◽  
Reed Beds ◽  
Microbial Removal

TERTIARY TREATMENT OF URBAN WASTEWATER BY CROSS FLOW MICROFILTRATION

1994 ◽  
Vol 30 (4) ◽  
pp. 133-139 ◽  
Author(s):  
M.-F. Pouet ◽  
A. Grasmick ◽  
F. Homer ◽  
F. Nauleau ◽  
J. C. Cornier
Keyword(s):  
Chemical Process ◽  
Cross Flow ◽  
Operating Conditions ◽  
Activated Sludge Process ◽  
Tertiary Treatment ◽  
Urban Wastewater ◽  
Physico Chemical ◽  
Upstream Process

Using cross flow microfiltration as a tertiary treatment would make the treatment reliable and achieve virtually a total disinfection. However, the use of the membrane techniques is IimiIed because of the material fouling. Our results show that the fouling mechanisms depend on the choice of the secondary upstream process. The quality of the effluent and the permeaIe flux obtained are very different if the sewage has been treated by a biological or by a physico-chemical process. The operating conditions of these processes have also an influence on the variations of the membrane permeability. In particular we have observed the importance of the load in the case of an activated sludge process and the role of the coagulant dose in the case of a physico-chemical process. The supracolloidal fraction of the suspensions seems to be one of the main fouling reasons.

Role of Terrestrial Ecosystems Planted with Ligneous Species in M.H.E.A. System Receiving Urban Wastewaters

1999 ◽  
Vol 40 (3) ◽  
pp. 187-194
Author(s):  
M. Nemcova ◽  
D. Cadelli ◽  
M. Radoux
Keyword(s):  
Phosphorus Removal ◽  
Aquatic Ecosystems ◽  
Terrestrial Ecosystems ◽  
Stage Ii ◽  
Small Scale ◽  
Experimental Plant ◽  
Tertiary Treatment ◽  
Nitrogen And Phosphorus ◽  
Nitrogen And Phosphorus Removal

Tests were carried out in a small-scale experimental plant. The system consisted of aquatic ecosystems without macrophytes (stage I) followed by semi-aquatic ecosystems planted with Typha latifolia L. (stage II). The outflow of stage II was evenly distributed into 10 units of terrestrial ecosystems (stage III), planted with ligneous species or without vegetation (control). The whole plant received a hydraulic load of 384 1/day of urban wastewaters. The net treatment area per person equivalent (PE) was 8 m2. The study focused on the evaluation of the role of terrestrial ecosystems mainly in tertiary treatment (nitrogen and phosphorus removal). Stages I and II with a surface area of 4 m2/PE assure a primary and secondary purification level that conforms with European standards. As for the tertiary treatment, removal efficiency remains inadequate. The primary and secondary efficiencies were considerably enhanced by installing terrestrial ecosystems after the two previous stages. The outflow water of all tested successions respects the European norms for suspended solids (35 mg/l), COD (125 mg/l) and BOD5 (25 mg/l). Concerning tertiary efficiency, the planted ecosystems systematically enhance nitrogen and phosphorus removal compared to the control sand. The succession with Salix has shown the best results. The outflow concentrations were 0.8 and 3.7 mg/l of total nitrogen and 1.8 and 1.3 mg/l of total phosphorus respectively (average values for periods 1995 and 1996). The control successions containing non-planted unit (sand) were significantly the least efficient for both nitrogen and phosphorus removal.

The Scottish prostate cryotherapy service–the role of the clinical nurse specialist

2019 ◽  
Vol 28 (18) ◽  
pp. S12-S16
Author(s):  
Fiona Birrell ◽  
Hing Y Leung
Keyword(s):  
Prostate Cancer ◽  
Treatment Modality ◽  
Secondary Care ◽  
Clinical Nurse Specialist ◽  
Nurse Specialist ◽  
Referral Process ◽  
Recurrent Prostate Cancer ◽  
Tertiary Treatment ◽  
Clinical Nurse

This article outlines the role of the clinical nurse specialist in establishing a Scotland-wide national designated service for prostate cryotherapy for patients with radiation-recurrent prostate cancer. The service was established in 2009 and provides prostate cryotherapy across Scotland. This article reviews and discusses the challenges involved in setting up a new service for tertiary treatment as well as highlighting the key achievements of the service. The challenges have included introducing the cryotherapy procedure in a safe and quality assured manner, developing and refining the referral process, educating both primary and secondary care teams on salvage prostate cryotherapy as a treatment modality and surgical procedure, as well as managing of complications following salvage prostate cryotherapy. The article also outlines the achievements of both the service and the treatment as well as how the service has developed since 2009.

Role of dactinomycin in the improved survival of children with Wilms' tumor

JAMA ◽  
1966 ◽  
Vol 195 (12) ◽  
pp. 1005-1009 ◽  
Author(s):  
D. J. Fernbach
Keyword(s):  
Wilms Tumor

Role of the allergist in diagnosis and management of patients with uveitis

JAMA ◽  
1966 ◽  
Vol 195 (3) ◽  
pp. 167-172 ◽  
Author(s):  
T. E. Van Metre
Keyword(s):  
Diagnosis And Management

The power of norms to sway fused group members

2018 ◽  
Vol 41 ◽  
Author(s):  
Winnifred R. Louis ◽  
Craig McGarty ◽  
Emma F. Thomas ◽  
Catherine E. Amiot ◽  
Fathali M. Moghaddam
Keyword(s):  
Evolutionary Anthropology ◽  
Normative Systems ◽  
Violent Extremism ◽  
Identity Fusion ◽  
Group Members

AbstractWhitehouse adapts insights from evolutionary anthropology to interpret extreme self-sacrifice through the concept of identity fusion. The model neglects the role of normative systems in shaping behaviors, especially in relation to violent extremism. In peaceful groups, increasing fusion will actually decrease extremism. Groups collectively appraise threats and opportunities, actively debate action options, and rarely choose violence toward self or others.

Elaborating the role of reflection and individual differences in the study of folk-economic beliefs

2018 ◽  
Vol 41 ◽  
Author(s):  
Kevin Arceneaux
Keyword(s):  
Decision Making ◽  
Individual Differences ◽  
Cognitive Processes ◽  
Evolutionary History ◽  
Behavioral Responses ◽  
History Of ◽  
Economic Beliefs

AbstractIntuitions guide decision-making, and looking to the evolutionary history of humans illuminates why some behavioral responses are more intuitive than others. Yet a place remains for cognitive processes to second-guess intuitive responses – that is, to be reflective – and individual differences abound in automatic, intuitive processing as well.

The role of affect in feelings of obligation

2020 ◽  
Vol 43 ◽  
Author(s):  
Stefen Beeler-Duden ◽  
Meltem Yucel ◽  
Amrisha Vaish
Keyword(s):  
Positive Emotions ◽  
The Creation ◽  
Sense Of Obligation

Abstract Tomasello offers a compelling account of the emergence of humans’ sense of obligation. We suggest that more needs to be said about the role of affect in the creation of obligations. We also argue that positive emotions such as gratitude evolved to encourage individuals to fulfill cooperative obligations without the negative quality that Tomasello proposes is inherent in obligations.

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