Treatment of secondary effluent from a petrochemical wastewater treatment plant by ozonation-biological aerated filter

2014 ◽  
Vol 90 (3) ◽  
pp. 543-549 ◽  
Author(s):  
Changyong Wu ◽  
Zhen Gao ◽  
Yuexi Zhou ◽  
Mingguo Liu ◽  
Jiamei Song ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Treatment Plant ◽  
Secondary Effluent ◽  
Biological Aerated Filter ◽  
Petrochemical Wastewater ◽  
Aerated Filter

Research on Pollutant Loading of Biological Aerated Filter

2013 ◽  
Vol 368-370 ◽  
pp. 265-268
Author(s):  
Jie Wang ◽  
Xiao Min Hu
Keyword(s):  
Wastewater Treatment ◽  
Key Words ◽  
Wastewater Treatment Plant ◽  
Treatment Plant ◽  
Biological Aerated Filter ◽  
Two Stage ◽  
Pollutant Loading ◽  
Hydraulic Loading ◽  
In Series ◽  
Aerated Filter

The aim of this study is to investigate the pollutant loading of two-stage biological aerated filter in series. We choose Shenyang Xiannhe wastewater treatment plant as research site. By testing pollutant loading under conditions of the same hydraulic loading and different hydraulic loading respectively, we discovered that there was great difference between the 1st filter and the 2nd filter. COD loading of the 1st filter varied from 2.0 m-3.d-1 to 6.0 m-3.d-1,however NH4-H loading was more complex with NH4-H remove rate being negative in most cases . COD loading of 2nd filter was from 0.2 m-3.d-1to 1.5 m-3.d-1,and NH4-H loading was from 0.4 m-3.d-1 to 1.5 m-3.d-1. Key words: biological aerated filter;pollutant loading.

Analysis on Phosphorus Removal from Domestic Wastewater Treatment Plant by Biological Aerated Filter

2013 ◽  
Vol 641-642 ◽  
pp. 299-302 ◽  
Author(s):  
Yin Song Liu ◽  
Hong Jun Han ◽  
Chun Yan Xu ◽  
Bing Wang ◽  
Jian Feng Tan
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Phosphorus Removal ◽  
Treatment Plant ◽  
Domestic Wastewater ◽  
Biological Aerated Filter ◽  
Biological Phosphorus Removal ◽  
Domestic Wastewater Treatment ◽  
Aerated Filter ◽  
Biological Phosphorus

Hydrolysis acidification / pre-denitrification biological aerated filter was adopted in a domestic wastewater treatment plant. The effluent was accorded with a standard in the Integrated Wastewater Discharge Standard（GB18918-2002）, in which the effluent phosphorus was demanded below 0.5mg/L. Through analysis on the process biological phosphorus removal, biological method can be found to total phosphorus 1.5 mg/L. If you reach level to an emissions standards, phosphorus chemical experiment research, finally determined by strategy for the CN pool, point for adding potions FeCl3, dosing quantity for 35mg/L.

Textile Wastewater Reuse: Ozonation of Membrane Concentrated Secondary Effluent

1999 ◽  
Vol 40 (4-5) ◽  
pp. 99-105 ◽  
Author(s):  
A. Lopez ◽  
G. Ricco ◽  
R. Ciannarella ◽  
A. Rozzi ◽  
A. C. Di Pinto ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Acute Toxicity ◽  
Wastewater Treatment Plant ◽  
Textile Industry ◽  
Nonionic Surfactants ◽  
Wastewater Reuse ◽  
Treatment Plant ◽  
Textile Wastewater ◽  
Secondary Effluent ◽  
Complete Disappearance

Among the activities appointed by the EC research-project “Integrated water recycling and emission abatement in the textile industry” (Contract: ENV4-CT95-0064), the effectiveness of ozone for improving the biotreatability of recalcitrant effluents as well as for removing from them toxic and/or inhibitory pollutants has been evaluated at lab-scale. Real membrane concentrates (pH=7.9; TOC=190 ppm; CDO=595 ppm; BOD5=0 ppm; Conductivity=5,000 μS/cm; Microtox-EC20=34%) produced at Bulgarograsso (Italy) Wastewater Treatment Plant by nanofiltering biologically treated secondary textile effluents, have been treated with ozonated air (O3conc.=12 ppm) over 120 min. The results have indicated that during ozonation, BOD5 increases from 0 to 75 ppm, whereas COD and TOC both decrease by about 50% and 30 % respectively. As for potentially toxic and/or inhibitory pollutants such as dyes, nonionic surfactants and halogenated organics, all measured as sum parameters, removals higher than 90% were achieved as confirmed by the complete disappearance of acute toxicity in the treated streams. The only ozonation byproducts searched for and found were aldehydes whose total amount continuously increased in the first hour from 1.2 up to 11.8 ppm. Among them, formaldehyde, acetaldehyde, glyoxal, propionaldehyde, and butyraldehyde were identified by HPLC.

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