Biological treatment of dairy plant wastewater<sup>1</sup>

Samkutty, Pushpa J.; Gough, R. H.; McGrew, P.

doi:10.1080/10934529609376482

Cited by 19 publications

(13 citation statements)

References 2 publications

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“…To overcome the situation that lipase activity and ability of the selected bacteria in degrading lipids varied according to the concentration of the inducer (lipids), attempt of using those strains in combination or in sequence was performed (Samkutty et al 1996). Based on the results of the individual degradation of Tw20 by the selected bacteria, L2 (P. diminuta) was chosen as the best lipid degrader and reacted with the other bacteria in sequence or in combinations (Table 2).…”

Section: Using the Selected Bacteria In Combinations Or In Sequencementioning

confidence: 99%

The Potentiality of Free Gram-negative Bacteria for Removing Oil and Grease from Contaminated Industrial Effluents

El-Bestawy

El-Masry

El-Adl³

2005

World J Microbiol Biotechnol

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Eight bacterial species were isolated from vegetable oil and grease-contaminated industrial wastewater, only four of which were found to have the ability to degrade oil and grease in the contaminated wastewater. These isolates were identified according to morphological and biochemical profiles as, Pseudomonas sp. (L1), P. diminuta (L2), P. pseudoalcaligenes (L3), and Escherichia sp. (L5). The degradative capabilities of the identified bacterial isolates for Tween 20 (Tw20) were investigated under different pH levels (6.5, 7, 7.5, and 8), different temperatures (30 and 37°C) and different concentrations of Tw20 (1, 1.5, and 2%). Results revealed differences in their optimum conditions for maximum degradation of vegetable oil. Bacterial isolates were tested individually or in combinations using synthetic aqueous medium supplemented with 1% palm oil, incubated at 30°C, and agitated at 150 rev/min for 13 days. All the tested bacteria were able to degrade the palm oil completely and utilized the free fatty acids (FFA) as a carbon source. The combination M1 (Pseudomonas sp. and P. diminuta) produced the highest degradative activity, followed by M3 (Pseudomonas sp., P. diminuta and P. pseudoalcaligenes). Also M1 produced the highest activity in reducing COD (93%) and BOD 5 (100%).

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Section: Using the Selected Bacteria In Combinations Or In Sequencementioning

confidence: 99%

The Potentiality of Free Gram-negative Bacteria for Removing Oil and Grease from Contaminated Industrial Effluents

El-Bestawy

El-Masry

El-Adl³

2005

World J Microbiol Biotechnol

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“…SBR was operated on a cycle per day with dairy wastewater as feed. One cycle is operation of the reactor for particular period of time (5,6,7,8,9,10 hours cycles). (1) Reactor (2) Outer water bath (3) Air Pump (4) Temperature Probe (5) pH Probe (6) Perforated pipe (7) Supernatant Liquid Tank (8) Sludge Collector…”

Section: Experimental Designmentioning

confidence: 99%

Applications of Sequencing Batch Reactor in the Degradation of Dairy Industry Wastewater

Sivaprakasam¹,

Balaji²

2019

IJRTE

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 Abstract: Biodegradation using sequencing batch reactor is one of the best method of treating the wastewater from the diary industries. Milk and milk based products has become most essential and important role in day-to-day life of human. The raw milk undergoes various processing in dairy industries to produce other milk based products. The large quantities of water and other chemicals are required in a diary plant. The volume of water used in a diary industry varies with respect to the availability of water, processing method and type of flow. The waste water after every step of processing is discharged into either the natural water bodies or to the environment which alters the ecological balance. This research work on the laboratory scale model is used for the analysis and treatment of dairy industry wastewater. The parameters studied are the biological oxygen demand, chemical oxygen demand, dissolved oxygen, total dissolved solids, suspended solids, pH and other substances present in the diary waste water. In this study, biodegradation of dairy wastewater was investigated under a sequencing batch reactor under aerobic conditions. It is performed on three different phases with variable reaction time to study the reductions in BOD, COD and other parameters respectively.

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“…The pH was controlled at a level of 7-8 by adding NaOH solution. Due to the low level of nutrients in the TMPL and to improve the efficiency of the biological process, the COD/N/P ratio of the influent was kept at 100/5/1 by adding phosphorus as KH 2 PO 4 and nitrogen as NH 4 Cl to the aeration processes. [20][21][22]…”

Section: Sequencing Batch Reactors (Sbrs)mentioning

confidence: 99%

“…Sequencing batch reactor (SBR) was introduced to treat the wastewater of pulp and paper industry due to its operational flexibility, high efficiency, and potential capital cost savings . Samkutty and coworkers reported that the use of SBR reduced the biological oxygen demand (BOD), chemical oxygen demand (COD) and total suspended solid (TSS) of a dairy plant effluent by 97, 93 and 97%, respectively . The biological treatment of wastewater generated in kraft pulp mills was also investigated using an SBR system in the past .…”

Section: Introductionmentioning

confidence: 99%

“…2,3 Samkutty and coworkers reported that the use of SBR reduced the biological oxygen demand (BOD), chemical oxygen demand (COD) and total suspended solid (TSS) of a dairy plant effluent by 97, 93 and 97%, respectively. 4 The biological treatment of wastewater generated in kraft pulp mills was also investigated using an SBR system in the past. 5 In one study on the SBR process of a paper mill wastewater, 93.1 6 0.3% of COD removal was achieved, wherein the sludge volume index (SVI) of the process was 52.7 6 1.3 mL/g implying a reasonable sludge settling performance.…”

Section: Introductionmentioning

confidence: 99%

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Impact of fly ash pretreatment on aerobic treatment of thermomechanical pulping spent liquor

Chen

Fatehi

2017

Biotechnology Progress

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This study investigated the impact of biomass-based fly ash (FA) pretreatment on the biodegradability of a thermomechanical pulping spent liquor (TMPL) in an aerobic system. In this study, FA was mixed with TMPL under the conditions of 6 wt.% based on TMPL, 25°C and 10 h, which removed a part of recalcitrant organic materials and resulted in 68.0, 40.0, 60.1, 81.2 and 48.3% reductions in chemical oxygen demand (COD), biochemical oxygen demand (BOD), total organic carbon (TOC), lignin and sugar, respectively. FA-pretreated TMPL pressate (FA-TMPL) was biologically treated in an aerobic system of sequencing batch reactor (SBR). The performance of the biological treatment with and without FA pretreatment was studied in two parallel SBRs over three months. The combination of FA and biological treatments removed 97.3% of COD, 98.3% of BOD, 96.3% of lignin, 99.5% of sugar, and 98.1% of TOC. Without FA pretreatment, the biological system removed 87.3% of COD, 89% of BOD, 81.6% of lignin, 98.6% of sugars, and 90.5% of TOC. The results also confirmed that the settling ability of sludge, which was indicated as a sludge volume index, was reduced from 109.3 mL/g to 53.5 mL/g. In addition, the advantages of using FA pretreatment in aerobic systems were discussed in detail. © 2017 American Institute of Chemical Engineers Biotechnol. Prog., 34:370-378, 2018.

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Biological treatment of dairy plant wastewater¹

Cited by 19 publications

References 2 publications

The Potentiality of Free Gram-negative Bacteria for Removing Oil and Grease from Contaminated Industrial Effluents

The Potentiality of Free Gram-negative Bacteria for Removing Oil and Grease from Contaminated Industrial Effluents

Applications of Sequencing Batch Reactor in the Degradation of Dairy Industry Wastewater

Impact of fly ash pretreatment on aerobic treatment of thermomechanical pulping spent liquor

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Biological treatment of dairy plant wastewater1

Cited by 19 publications

References 2 publications

The Potentiality of Free Gram-negative Bacteria for Removing Oil and Grease from Contaminated Industrial Effluents

The Potentiality of Free Gram-negative Bacteria for Removing Oil and Grease from Contaminated Industrial Effluents

Applications of Sequencing Batch Reactor in the Degradation of Dairy Industry Wastewater

Impact of fly ash pretreatment on aerobic treatment of thermomechanical pulping spent liquor

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Product

Resources

About

Biological treatment of dairy plant wastewater¹