Petrochemical wastewater treatment with a pilot-scale bioaugmented biological treatment system

2007 ◽  
Vol 8 (11) ◽  
pp. 1831-1838 ◽  
Author(s):  
Li-jun Zhao ◽  
Fang Ma ◽  
Jing-bo Guo ◽  
Qing-liang Zhao
Keyword(s):  
Wastewater Treatment ◽  
Biological Treatment ◽  
Pilot Scale ◽  
Treatment System ◽  
Petrochemical Wastewater ◽  
Biological Treatment System

Study on Aerobic Biological Phase in the System of Coal Tar Processing Wastewater Treatment

2011 ◽  
Vol 108 ◽  
pp. 183-188 ◽  
Author(s):  
Yan Li Lǚ ◽  
Yan Qiu Wang ◽  
Ming Jun Shan ◽  
Da Wei Pan ◽  
Tie Feng Li ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Biological Treatment ◽  
Coal Tar ◽  
Reactor System ◽  
Anaerobic Ammonium Oxidation ◽  
Treatment System ◽  
Ammonium Oxidation ◽  
Ammonium Removal ◽  
Dirty Water ◽  
Biological Treatment System

The paper discusses the change regulation, characteristics and designation function of the aerobic biological phase in the biological treatment system of single reactor system for high ammonium removal over nitrite-anaerobic ammonium oxidation (SHARON-ANAMMOX) of Coal Tar Processing wastewater treatment. And soma advice is given for the adjustment and supervision of the similar biological disposing system of industrial dirty water.

Savings with upgraded performance through improved activated sludge denitrification in the combined activated sludge–biofilter system of the Southpest Wastewater Treatment Plant

2008 ◽  
Vol 57 (8) ◽  
pp. 1287-1293 ◽  
Author(s):  
A. Jobbágy ◽  
G. M. Tardy ◽  
Gy. Palkó ◽  
A. Benáková ◽  
O. Krhutková ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Activated Sludge ◽  
Wastewater Treatment Plant ◽  
Biological Treatment ◽  
Treatment Plant ◽  
Oxygen Demand ◽  
Process Efficiency ◽  
Initial Value ◽  
Initial Profile ◽  
Biological Treatment System

The purpose of the experiments was to increase the rate of activated sludge denitrification in the combined biological treatment system of the Southpest Wastewater Treatment Plant in order to gain savings in cost and energy and improve process efficiency. Initial profile measurements revealed excess denitrification capacity of the preclarified wastewater. As a consequence, flow of nitrification filter effluent recirculated to the anoxic activated sludge basins was increased from 23,000 m3 d−1 to 42,288 m3 d−1 at an average preclarified influent flow of 64,843 m3 d−1, Both simulation studies and microbiological investigations suggested that activated sludge nitrification, achieved despite the low SRT (2–3 days), was initiated by the backseeding from the nitrification filters and facilitated by the decreased oxygen demand of the influent organics used for denitrification. With the improved activated sludge denitrification, methanol demand could be decreased to about half of the initial value. With the increased efficiency of the activated sludge pre-denitrification, plant effluent COD levels decreased from 40–70 mg l−1 to < 30–45 mg l−1 due to the decreased likelihood of methanol overdosing in the denitrification filter

Chemical Solubilization of Particulate Organics as a Pretreatment Approach

1992 ◽  
Vol 26 (9-11) ◽  
pp. 2289-2292 ◽  
Author(s):  
S. R. Mukherjee ◽  
A. D. Levine
Keyword(s):  
Enzymatic Hydrolysis ◽  
Alkaline Hydrolysis ◽  
Industrial Waste ◽  
Biological Treatment ◽  
Organic Waste ◽  
Experimental Studies ◽  
Organic Content ◽  
Treatment System ◽  
Chemical Pretreatment ◽  
Biological Treatment System

The first step degradation of particulate organic waste is solubilization. In a bioreactor, solubilization occurs due to enzymatic hydrolysis. As an alternative, the use of chemical solubilization methods may provide a means of more efficiently solubilizing the particulates to a form that can be readily utilized by a biological treatment system. In this study, an industrial waste high in particulate organic content was used as a test substrate. The chemical pretreatment methods tested were alkaline hydrolysis, oxidation, and a mixture of hydrolysis and oxidation. Experimental studies to elucidate the effects of chemical pretreatment on the characteristics of particulate organics are discussed in this paper.

scholarly journals Effectiveness of vertical subsurface wetlands for iron and manganese removal from wastewater in drinking water treatment plants

2019 ◽  
Vol 24 (1) ◽  
pp. 135-163
Author(s):  
Jader Martínez Girón ◽  
Jenny Vanessa Marín-Rivera ◽  
Mauricio Quintero-Angel
Keyword(s):  
Drinking Water ◽  
Wastewater Treatment ◽  
Water Treatment ◽  
Treatment Plant ◽  
Drinking Water Treatment ◽  
Water Treatment Plant ◽  
Pilot Scale ◽  
Treatment System ◽  
Water Treatment Plants ◽  
Significant Difference

Population growth and urbanization pose a greater pressure for the treatment of drinking water. Additionally, different treatment units, such as decanters and filters, accumulate high concentrations of iron (Fe) and manganese (Mn), which in many cases can be discharged into the environment without any treatment when maintenance is performed. Therefore, this paper evaluates the effectiveness of vertical subsurface wetlands for Fe and Mn removal from wastewater in drinking water treatment plants, taking a pilot scale wetland with an ascending gravel bed with two types of plants: C. esculenta and P. australis in El Hormiguero (Cali, Colombia), as an example. The pilot system had three upstream vertical wetlands, two of them planted and the third one without a plant used as a control. The wetlands were arranged in parallel and each formed by three gravel beds of different diameter. The results showed no significant difference for the percentage of removal in the three wetlands for turbidity (98 %), Fe (90 %), dissolved Fe (97 %) and Mn (98 %). The dissolved oxygen presented a significant difference between the planted wetlands and the control. C. esculenta had the highest concentration of Fe in the root with (103.5 ± 20.8) µg/g ; while P. australis had the highest average of Fe concentrations in leaves and stem with (45.7 ± 24) µg/g and (41.4 ± 9.1) µg/g, respectively. It is concluded that subsurface wetlands can be an interesting alternative for wastewater treatment in the maintenance of drinking water treatment plants. However, more research is needed for the use of vegetation or some technologies for the removal or reduction of the pollutant load in wetlands, since each drinking water treatment plant will require a treatment system for wastewater, which in turn requires a wastewater treatment system as well.

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