THE DISINFECTION POTENTIAL OF TWO ENHANCED PRIMARY TREATMENT TECHNOLOGIES TREATING WET WEATHER FLOWS AT EDMONTON, GOLD BAR WWTP

2003 ◽  
Vol 2003 (10) ◽  
pp. 211-224
Author(s):  
Tim A. Constantine ◽  
Dave Brook ◽  
George Crawford ◽  
Fernando Sacluti ◽  
Steve Black ◽  
...  
Keyword(s):  
Primary Treatment ◽  
Treatment Technologies ◽  
Wet Weather

Bench to Full-Scale Enhanced Primary Treatment of Municipal Wastewater under Wet Weather Flow for Minimized Pollution Load: Evaluation of Chemical Addition and Process Control Indicators

2020 ◽  
Author(s):  
Mirna Alameddine ◽  
Abdul Rahim Al Umairi ◽  
Mohammed Zakee Shaikh ◽  
Mohamed Gamal El-Din
Keyword(s):  
Process Control ◽  
Municipal Wastewater ◽  
Weather Conditions ◽  
Primary Treatment ◽  
Full Scale ◽  
Operation Conditions ◽  
Wet Weather ◽  
Slow Mixing ◽  
Load Evaluation ◽  
Online Process

The enhanced primary treatment of municipal primary influent under wet weather conditions was studied through a comprehensive approach from bench to full scale. The study delivered a practical solution for managing seasonal fluctuations in the influent wastewater by determining the most effective operation conditions for coagulation/flocculation. Three metal-based coagulants were tested through a series of jar tests. Alum outperformed other coagulants since 1 mg of Al added as alum with low mixing was able to remove 22 NTUs, 19 mg COD and 0.8 mg ortho-P. Three-factor ANOVA indicated that TSS removal depended mostly on rapid mixing while COD and ortho-P removals depended on slow mixing and coagulant dose. In bench and full-scale operations, the addition of polymer did not lead to any pronounced improvements. Finally, turbidity and percent ultraviolet transmittance showed good correlation with TSS and ortho-P which evokes their use as surrogates for micropollutants removal and online process control.

Chemically Enhanced Primary Treatment the Next Step in Columbus’ Wet Weather Plan

2015 ◽  
Vol 2015 (16) ◽  
pp. 5329-5346
Author(s):  
Dax Blake ◽  
Tracey Phelps ◽  
Stacia Eckenwiler ◽  
Jay Lee ◽  
Kathleen Smith ◽  
...  
Keyword(s):  
Primary Treatment ◽  
Wet Weather ◽  
Chemically Enhanced Primary Treatment

Pollution Control in Meat Industry

2019 ◽  
Vol 6 (2) ◽  
pp. 97-110
Author(s):  
Dal Singh Kharat
Keyword(s):  
Pollution Control ◽  
Primary Treatment ◽  
Solid Wastes ◽  
Effluent Treatment ◽  
Meat Industry ◽  
Meat Meal ◽  
Public Nuisance ◽  
Treatment Technologies ◽  
Control Technologies ◽  
By Products

Meat industry generates various wastes such as effluent, emissions and solid wastes that pose environmental and health problems. The effluent released from the meat industries finds its way into the natural water resources and degrade the water quality. The solid wastes of meat industry create a public nuisance by way of foul smell if it is not handled properly. The effluents, as well as solid wastes of meat industries, are possible sources of pathogens that are hazardous to human health. Waste minimization, segregation of wastes and treatment, processing of wastes to make possible recoveries of by-products and the final disposal are the basic steps for containment of pollution from the meat industry. The effluent treatment technologies include primary treatment, secondary treatment and tertiary treatment. Composting, biomehtanation, rendering, incineration and burial are the processes for disposing of the solid wastes generated by meat industries. Appropriate treatment process is selected considering the level of pollution, mode of disposal and the environmental standards. The treatment and processing of meat industry wastes minimize the pollution problems and also give scope for the recovery of by-products such as bone and meat meal, tallow, methane and manure that have commercial values. The meat industries also generate odours that are required to be contained using suitable control devices. The paper seeks to give an overview of the pollution control technologies currently in use for the treatment of effluents and solid wastes, and possible recovery of by-products.

scholarly journals Cosmetic wastewater primary treatment by fenton process and final polishing adsorption

2020 ◽  
Vol 24 ◽  
pp. 13
Author(s):  
Lisiée Manzoli Gonçalves Pereira ◽  
Maria Eugênia de Oliveira Ferreira ◽  
Núbia Natália de Brito ◽  
Indianara Conceição Ostroski
Keyword(s):  
Contact Time ◽  
Removal Rate ◽  
Oxygen Demand ◽  
Environmental Parameters ◽  
Primary Treatment ◽  
Total Iron ◽  
Fenton Process ◽  
Ph Values ◽  
Treatment Technologies ◽  
Maximum Removal

This work aimed to integrate two wastewater treatment technologies, Fenton process as the primary treatment and adsorption aiming achieve maximum removal efficiency and adequation to the environmental and water legislations. Wastewater from a cosmetics industry plant in the metropolitan area of Goiânia (Brazil) was the object of this research. It was analysed environmental parameters as absorbance, total iron, chemical oxygen demand, pH, total phenols, conductivity, H2O2, dissolved oxygen, turbidity, and total solids. They were analyzed in between processes at all stages.  The effects of Fe2+ (18.42-257.89 mg L-1) and H2O2 (500-2300 mg L-1) concentrations and pH values (3.00-5.50) were studied for the Fenton process treatment. In adsorption, the activated carbon was characterized by infrared spectroscopy, elemental analysis, adsorption and desorption of N2 and thermogravimetry (TG/DTA). The effect of the contact time (4min-24h) and of the temperature variation in the system 20-60 °C were studied. By integrating the two technologies, a satisfactory removal rate was achieved for the analyzed parameters in the total time of treatment of 82 minutes

Coagulation-flocculation followed by catalytic ozonation processes for enhanced primary treatment during wet weather conditions

2021 ◽  
Vol 283 ◽  
pp. 111975
Author(s):  
Núria López-Vinent ◽  
Alberto Cruz-Alcalde ◽  
Soliu O. Ganiyu ◽  
Shailesh Sable ◽  
Selamawit Ashagre Messele ◽  
...  
Keyword(s):  
Weather Conditions ◽  
Primary Treatment ◽  
Catalytic Ozonation ◽  
Wet Weather
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