Production of biodegradable plastics from activated sludge generated from a food processing industrial wastewater treatment plant

2004 ◽  
Vol 95 (3) ◽  
pp. 327-330 ◽  
Author(s):  
M SURESHKUMAR
Keyword(s):  
Wastewater Treatment ◽  
Activated Sludge ◽  
Wastewater Treatment Plant ◽  
Food Processing ◽  
Industrial Wastewater ◽  
Treatment Plant ◽  
Biodegradable Plastics ◽  
Industrial Wastewater Treatment

Experience of 16 Years' Operation and Maintenance of the Fukashiba Industrial Wastewater Treatment Plant of the Kashima Petrochemical Complex – II. Biodegradability of 37 Organic Substances and 28 Process Wastewaters

1988 ◽  
Vol 20 (10) ◽  
pp. 201-210 ◽  
Author(s):  
S. Matsui ◽  
Y. Okawa ◽  
R. Ota
Keyword(s):  
Wastewater Treatment ◽  
Activated Sludge ◽  
Wastewater Treatment Plant ◽  
Industrial Wastewater ◽  
Treatment Plant ◽  
Organic Substances ◽  
Industrial Wastewater Treatment ◽  
Petrochemical Complex ◽  
Toc Removal ◽  
Nitro Aromatics

Twenty-eight process wastewaters and thirty-seven organic substances identified in the wastewater of the Kashima petrochemical complex were subjected to biodegradability tests. The tests consisted of the activated sludge degradability method and a supplementary test using the respiration meter method. Both tests utilized the activated sludge of the Fukashiba industrial wastewater treatment plant, which was acclimatized to the wastewater and organic substances. The 28 process wastewaters were classified into biodegradable, less biodegradable, and non-biodegradable according to the percentage TOC removal and the BOD5/TOC ratio of the wastewater. The 37 organic substances were also classified into biodegradable, less biodegradable and non-biodegradable according to TOC and CODMn removal. In general, chlorinated compounds, nitro-aromatics and polymerized compounds were difficult to biodegrade. From the biodegradability tests of the factory wastewaters, it was found that the refractory CODMn loads of these factories contributed to the load remaining in the effluent of the wastewater treatment plant. Various improvements were made to reduce the discharge of refractory substances from the factories.

Nocardioides daeguensis sp. nov., a nitrate-reducing bacterium isolated from activated sludge of an industrial wastewater treatment plant

2013 ◽  
Vol 63 (Pt_10) ◽  
pp. 3727-3732 ◽  
Author(s):  
Yingshun Cui ◽  
Sung-Geun Woo ◽  
Jangho Lee ◽  
Sahastranshu Sinha ◽  
Myung-Suk Kang ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Activated Sludge ◽  
Wastewater Treatment Plant ◽  
Industrial Wastewater ◽  
Type Species ◽  
Treatment Plant ◽  
Diaminopimelic Acid ◽  
Industrial Wastewater Treatment ◽  
Content Type ◽  
Link Type

A Gram-reaction-positive, rod-shaped, non-spore-forming bacterium (strain 2C1-5T) was isolated from activated sludge of an industrial wastewater treatment plant in Daegu, South Korea. Its taxonomic position was investigated by using a polyphasic approach. On the basis of 16S rRNA gene sequence similarity, the closest phylogenetic relatives were the type strains of Nocardioides nitrophenolicus (98.6 % similarity), N. kongjuensis (98.5 %), N. caeni (98.4 %), N. simplex (98.3 %), N. aromaticivorans (98.1 %) and N. ginsengisoli (97.5 %); the phylogenetic distance from other species with validly published names within the genus Nocardioides was greater than 3 %. Strain 2C1-5T was characterized chemotaxonomically as having ll-2,6-diaminopimelic acid in the cell-wall peptidoglycan, MK-8(H4) as the predominant menaquinone and iso-C16 : 0, C16 : 0 and C17 : 1ω6c as the major fatty acids. The G+C content of the genomic DNA was 74.9 mol%. These chemotaxonomic properties and phenotypic characteristics supported the affiliation of strain 2C1-5T to the genus Nocardioides . The results of physiological and biochemical tests allowed genotypic and phenotypic differentiation of strain 2C1-5T from existing species with validly published names. Therefore, strain 2C1-5T represents a novel species of the genus Nocardioides , for which the name Nocardioides daeguensis sp. nov. is proposed, with the type strain 2C1-5T ( = JCM 17460T = KCTC 19799T).

Control of bulking sludge caused by Type 021 N and Type 0961 in an industrial wastewater treatment plant with an aerobic selector

2002 ◽  
Vol 46 (1-2) ◽  
pp. 29-33 ◽  
Author(s):  
A. Duine ◽  
S. Kunst
Keyword(s):  
Fatty Acids ◽  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Pilot Plant ◽  
Industrial Wastewater ◽  
Volatile Fatty Acids ◽  
Treatment Plant ◽  
Filamentous Growth ◽  
Shock Loads ◽  
Industrial Wastewater Treatment

Over a period of 6 months, pilot plant investigations were carried out with the purpose of bulking sludge control with different aerobic selectors. The wastewater was dominated by industrial dischargers, containing volatile fatty acids up to 450 mg/l. With complete-mix-selectors it was not possible to achieve a stable SVI below 150 ml/g. The bulking sludge could only be controlled with a sectionalized selector (HRT 5–8 minutes per section). The SVI decreased to values below 100 ml/g. Shock-loads and increased VFA-concentrations (by dosing NaC2H3OO) did not cause filamentous growth.

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