scholarly journals Effect of Effluents from a Sewage Treatment Plant on River Benthic Animals and Water Environment.

1999 ◽  
Vol 35 (4) ◽  
pp. 247-259 ◽  
Author(s):  
JIRO AIZAWA ◽  
YOSHIAKI SATO ◽  
AYUMI ITO ◽  
KUMIKO KITADA ◽  
TERUYUKI UMITA ◽  
...  
Keyword(s):  
Sewage Treatment ◽  
Water Environment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Benthic Animals

Simultaneous immobilization of ammonium and phosphate from aqueous solution using zeolites synthesized from fly ashes

2013 ◽  
Vol 67 (6) ◽  
pp. 1324-1331 ◽  
Author(s):  
X. D. Ji ◽  
M. L. Zhang ◽  
Y. Y. Ke ◽  
Y. C. Song
Keyword(s):  
Sewage Treatment ◽  
Water Environment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Quality Standard ◽  
Exchange Capacity ◽  
Fly Ashes ◽  
Adsorption Processes ◽  
Equilibrium Data ◽  
Intra Particle Diffusion

Zeolites were synthesized from silica-rich (SF-Z) and calcium-rich (CF-Z) fly ashes, respectively, and their performance in immobilizing ammonium and phosphate was investigated through batch experiments. The cation exchange capacity and phosphate immobilization capacity of SF-Z were identified as 2.79 meq/g and 12.97 mg/g while those of CF-Z were 0.69 meq/g and 87.41 mg/g, respectively. The mixture of SF-Z and CF-Z (MSC-Z) immobilized simultaneously ammonium and phosphate, and the ratio of SF-Z to CF-Z depended on the ammonium and phosphate concentrations in wastewater and the discharge standard. The adsorption processes of ammonium and phosphate on MSC-Z followed Ho's pseudo-second-order model and the intra-particle diffusion was a rate-controlling step. The Langmuir model produced better suitability to the equilibrium data. The thermodynamic study revealed that the adsorption of both ammonium and phosphate on MSC-Z was an endothermic reaction. After treatment by MSC-Z, the ammonium and phosphate concentrations in wastewater from a sewage treatment plant decreased from 7.45 and 1.42 mg/L to 2.06 and 0.51 mg/L, respectively, and met Surface Water Environment Quality Standard in China δ. These results show that the immobilization of ammonium and phosphate in wastewater can be achieved by the combination of zeolites synthesized from silica-rich and calcium-rich fly ashes.

scholarly journals Engineering application of ecological lake purification tailwater from sewage plant in vein industrial park

2020 ◽  
Vol 165 ◽  
pp. 02026
Author(s):  
Lintang Yu ◽  
Zhongya Tang ◽  
Li Feng ◽  
Junjie Ji
Keyword(s):  
Sewage Treatment ◽  
Water Environment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Engineering Application ◽  
Quality Standard ◽  
Ammonia Nitrogen ◽  
Industrial Park ◽  
Sewage Treatment Plants ◽  
Environment Quality

As the raising of environmental protection requirements, the outlet water (tailwater) quality standards of many sewage treatment plants need to be further improved. This paper mainly introduces the advanced treatment of tailwater from sewage treatment plant of vein industrial park by artificial ecological lake. The designed processing amount of this project was 1300 m3/d, the inlet water COD was 30 mg/L, the ammonia nitrogen content was 1.5 mg/L, and the outlet water main index reached the surface water environment quality standard (GB3838-2002) Ⅲ class water quality standard, which had improved the outlet water (tailwater) quality of sewage treatment plants and improved the regional water environment quality. By constructing an artificial landscape lake, the resource utilization of tailwater can be realized.

Biodegradation Characteristics and Bioaugmentation Potential of an Efficient O-Cresol-Degrading Strain Isolated from Petrochemical Sewage Treatment Plant

2013 ◽  
Vol 726-731 ◽  
pp. 264-268
Author(s):  
Jia Bao Yan ◽  
Long Long Xu ◽  
Xin Wei
Keyword(s):  
Degradation Kinetics ◽  
Substrate Inhibition ◽  
Sewage Treatment ◽  
Water Environment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Refinery Wastewater ◽  
High Concentration ◽  
16S Rdna Sequence Analysis ◽  
Competitive Substrate

O-cresol and its isomers are one of the major pollutants to water environment. In this study, a highly effective o-cresol-degradation strain was isolated from the activated sludge of a petrochemical sewage treatment. Based on its morphology, physiological characteristics and 16S rDNA sequence analysis, it was identified as Pseudomonas sp. The optimal operating temperature, initial pH and rotary shaker speed for the strain to degrade o-cresol were experimentally determined to be 30°C,pH 6.5~8.0 and 150~200 rpm, respectively. Substrate scope experiment showed that the strain can degrade o-cresols other isomers and phenol. The degradation kinetics of the strain can be described by competitive substrate inhibition model with a maximum specific degradation rate of 0.055h-1. Furthermore, the bioaugmentation of the strain in the refinery wastewater to degrade o-cresol was investigated. The result showed that the strain is able to survive in refinery wastewater with high concentration of o-cresol and remove it efficiently.

Analysis and balance of phosphorous removal from wastewater at urban wastewater treatment plant

2020 ◽  
Vol 15 (2) ◽  
pp. 142-151
Author(s):  
Peter Lukac ◽  
Lubos Jurik
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Wastewater Treatment Plants ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Phosphorus Recovery ◽  
Anaerobic Sludge ◽  
Biological Phosphorus Removal ◽  
The Mean

Abstract:Phosphorus is a major substance that is needed especially for agricultural production or for the industry. At the same time it is an important component of wastewater. At present, the waste management priority is recycling and this requirement is also transferred to wastewater treatment plants. Substances in wastewater can be recovered and utilized. In Europe (in Germany and Austria already legally binding), access to phosphorus-containing sewage treatment is changing. This paper dealt with the issue of phosphorus on the sewage treatment plant in Nitra. There are several industrial areas in Nitra where record major producers in phosphorus production in sewage. The new wastewater treatment plant is built as a mechanicalbiological wastewater treatment plant with simultaneous nitrification and denitrification, sludge regeneration, an anaerobic zone for biological phosphorus removal at the beginning of the process and chemical phosphorus precipitation. The sludge management is anaerobic sludge stabilization with heating and mechanical dewatering of stabilized sludge and gas management. The aim of the work was to document the phosphorus balance in all parts of the wastewater treatment plant - from the inflow of raw water to the outflow of purified water and the production of excess sludge. Balancing quantities in the wastewater treatment plant treatment processes provide information where efficient phosphorus recovery could be possible. The mean daily value of P tot is approximately 122.3 kg/day of these two sources. The mean daily value of P tot is approximately 122.3 kg/day of these two sources. There are also two outflows - drainage of cleaned water to the recipient - the river Nitra - 9.9 kg Ptot/day and Ptot content in sewage sludge - about 120.3 kg Ptot/day - total 130.2 kg Ptot/day.

Changes of microbial indices of water quality in the Vistula and Brda rivers as a result of sewage treatment plant operation

2008 ◽  
Vol 37 (2) ◽  
Author(s):  
Maciej Walczak
Keyword(s):  
Water Quality ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Sewage Treatment Plants ◽  
Plant Operation ◽  
Treated Sewage ◽  
Microbiological Parameters ◽  
Microbial Indices

Changes of microbial indices of water quality in the Vistula and Brda rivers as a result of sewage treatment plant operationThis paper reports the results of studies of microbiological changes in the water quality of the Vistula and Brda rivers after the opening of sewage treatment plants in Bydgoszcz. The study involved determining the microbiological parameters of water quality. Based on the results obtained, it was found that the quality of the water in both rivers had improved decidedly after the opening of the plants, although an increased number of individual groups of microorganisms was found at the treated sewage outlet from one of the plants.

Properties of Nocardiaform Actinomycetes Isolated from a Sewage Treatment Plant of Southern Part of Miyagi.

2000 ◽  
Vol 36 (4) ◽  
pp. 161-171
Author(s):  
KENITSU KONNO ◽  
NAOKI ABE ◽  
YOSHIRO SATO ◽  
KOJI AKAMATSU ◽  
MAKOTO ABE ◽  
...  
Keyword(s):  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant
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