Enhanced growth and nutrients removal efficiency of Characium sp. cultured in agricultural wastewater via acclimatized inoculum and effluent recycling

The treatment of wastewater with activated sludge process has been received with a great attention for decades. However, the effective application of this field is not as widely spread. In this study, the treatment of wastewater was investigated, and samples were collected and ascertained. The process operation was monitored and major observation and findings were noted. Consistent pH of 7.4 was almost maintained. High nutrients removal efficiency was sustained with low concentration of nitrates and phosphates in effluent wastewater. Suspended solids removal was satisfactory, although undesired spike of 19 mg/l and three undesired values beyond >15mg/l were measured. The micronutrient metals such as Al and Zn were found to be high with highest concentration of 113600 mg/kg and 940 mg/kg. The maximum concentration of 300 mg/kg and 332 mg/kg of Mn and Cr respectively were recorded.

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Nitrogen removal in a submerged filter with no effluent recirculation

Water Science & Technology ◽

10.2166/wst.2000.0358 ◽

2000 ◽

Vol 42 (3-4) ◽

pp. 51-58 ◽

Cited By ~ 2

Author(s):

P.C. Chui ◽

Y. Terashima ◽

J.H. Tay ◽

H. Ozaki ◽

S. Jeyaseelan

Keyword(s):

Removal Efficiency ◽

Nitrogen Removal ◽

Loading Rate ◽

Industrial Effluents ◽

Anaerobic Treatment ◽

Anoxic Zone ◽

Influent Concentration ◽

Test Conditions ◽

Effluent Recirculation ◽

Effluent Recycling

The performance of a partly aerated submerged filter in treating high nitrogenous wastewaters such as industrial effluents after anaerobic treatment was investigated in this study. The filter was operated without effluent recycling and its response to various test conditions of aeration rates, hydraulic loads, COD/N ratios and hydraulic retention times was evaluated. Results indicated that for an influent concentration of 250 mg N/L and for a loading rate of 0.7 kg N/m3.d, 60% of the nitrogen can be removed. For a reduced loading rate of 0.25 kg N/m3.d, nitrogen removal efficiency could reach 86%. Denitrification was hypothesized to have taken place inside the support media in the aerated zone of the filter where oxygen was lacking as well as at locations immediately below the air diffuser where an anoxic zone was formed with the back-flowing nitrified substrate.

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Nutrients Removal Efficiency Assessment of Constructed Wetland for the Rural Domestic Wastewater Growing Distinct Species of Vegetation

Journal of Environmental & Analytical Toxicology ◽

10.4172/2161-0525.1000588 ◽

2018 ◽

Vol 08 (05) ◽

Cited By ~ 1

Author(s):

Ittehad Hussain ◽

Xiwu Lu ◽

Javid Hussain ◽

Raana Fahim ◽

Stanislaus Tombe Venusto Lako

Keyword(s):

Removal Efficiency ◽

Constructed Wetland ◽

Domestic Wastewater ◽

Distinct Species ◽

Nutrients Removal ◽

Efficiency Assessment

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Occurrence and efficacy of bisphenol A (BPA) treatment in selected municipal wastewater treatment plants, Bangkok, Thailand

Water Science & Technology ◽

10.2166/wst.2015.232 ◽

2015 ◽

Vol 72 (3) ◽

pp. 463-471 ◽

Cited By ~ 7

Author(s):

Intira Pookpoosa ◽

Ranjna Jindal ◽

Daisy Morknoy ◽

Kraichat Tantrakarnapa

Keyword(s):

Wastewater Treatment ◽

Bisphenol A ◽

Activated Sludge ◽

Removal Efficiency ◽

Municipal Wastewater ◽

Wastewater Treatment Plants ◽

Nutrients Removal ◽

Municipal Wastewater Treatment ◽

Treatment Processes ◽

Municipal Wastewater Treatment Plants

Investigations were carried out on the occurrence and fate of bisphenol A (BPA) in five wastewater treatment plants (WWTPs) in Bangkok, namely, Rattanakosin, Chong Non Si, Din Daeng (DD), Nong Khaem and Thungkru (TK) during three sampling events between October 2013 and February 2014. Based on the results, the influent and effluent BPA concentrations ranged between 128.5 ng/L and 606.0 ng/L; and 38.7 ng/L and 270.5 ng/L, respectively. The effluent BPA concentrations of most of the five WWTPs were lower than the influent levels. TK had the highest removal efficiency in October 2013 (80.4%) and December 2013 (90.7%) and the second highest in February 2014 (69.2%). DD had the highest removal efficiency in February 2014 (91.8%). The treatment processes employed at TK and DD were vertical loop reactor activated sludge process and activated sludge with nutrients removal, respectively. Thus, these processes seem to be good for BPA degradation.

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