Cellulose based electrospun nanofilters: perspectives on tannery effluent waste water treatment

Cellulose ◽  
2022 ◽  
Author(s):  
Senthil Rethinam ◽  
Serdar Batıkan Kavukcu ◽  
Thiagarajan Hemalatha ◽  
A. Wilson Aruni ◽  
Aylin Sendemir ◽  
...  
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Waste Water Treatment ◽  
Tannery Effluent ◽  
Effluent Waste

APPLIED OFF-LINE EXPERT SYSTEM FOR EFFLUENT, OPERATIONAL AND TECHNICAL PROBLEMS OF WASTE WATER TREATMENT PLANTS

1994 ◽  
Vol 30 (2) ◽  
pp. 157-164 ◽  
Author(s):  
Gösta Ladiges ◽  
Rolf Kayser
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Waste Water Treatment ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Knowledge Bases ◽  
Waste Water Treatment Plant ◽  
Technical Problems ◽  
Water Treatment Plants ◽  
Effluent Waste

An off-line expel1 system has been developed and implemented at a nutrient removing waste water treatment plant to provide the operators with knowledge required to run their plant. The system can be started at occurring problems, and for the choice of setpoints for the operation of the plant. It contains knowledge bases for various effluent waste water and technical problems, combining facts and relationships for different chemical, biological and technical processes with models and algorithms. This enables the system to assess situations and give proper advice as well based on facts, experience and calculations. The system is built on a personal computer, and works with a Windows user interface that has been developed in intense co-operation with the plant operators.

scholarly journals A novel textile wastewater treatment using ligninolytic co-culture and photocatalysis with TiO2

2018 ◽  
Vol 23 (3) ◽  
pp. 437-464 ◽  
Author(s):  
Andrea Blanco-Vargas ◽  
Christian Fernando Ramírez-Sierra ◽  
Marcela Duarte Castañeda ◽  
Milena Beltrán-Villarraga ◽  
Luz Karime Medina-Córdoba ◽  
...  
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Waste Water Treatment ◽  
Dye Adsorption ◽  
Color Removal ◽  
Sequential Treatment ◽  
Toxicity Tests ◽  
Secondary Treatment ◽  
Tertiary Treatment ◽  
Effluent Waste

Textile industries produce effluent waste water that, if discharged, exerts a negative impact on the environment. Thus, it is necessary to design and implement novel waste water treatment solutions. A sequential treatment consisting of ligninolytic co-culture with the fungi Pleurotus ostreatus and Phanerochaete crhysosporium (secondary treatment) coupled to TiO2/UV photocatalysis (tertiary treatment) was evaluated in the laboratory in order to discolor, detoxify, and reuse textile effluent waste water in subsequent textile dyeing cycles. After 48 h of secondary treatment, upto 80 % of the color in the waste water was removed and its chemical and biochemical oxygen demands (COD, and BOD5) were abated in 92 % and 76 %, respectively. Laccase and MnP activities were central to color removal and COD and BOD5 abatement, exhibiting activity values of 410 U.L-1 and 1 428 U.L-1, respectively. Subjecting waste water samples to 12h of tertiary treatment led to an 86 % color removal and 73 % and 86 % COD and BOD5 abatement, respectively. The application of  a sequential treatment for 18 h improved the effectiveness of the waste water treatment, resultingin 89 % of color removal, along with 81 % and 89 % COD and BOD5 abatement, respectively. With this sequential treatment a bacterial inactivation of 55 % was observed. TiO2 films were reused continuously during two consecutive treatment cycles without thermic reactivation. Removal percentages greater than 50 % were attained. Acute toxicity tests performed with untreated waste water led to a lethality level of 100 % at 50 % in Hydra attenuata and to a growth inhibition of 54 % at 50 % in Lactuca sativa. Whereas sequentially treated waste water excreted a 13 % lethality at 6.25 % and aninhibition of 12 % at 75 % for H. attenuata and L. sativa, respectively. Finally, sequentially treated waste water was reused on dyeing experiments in which 0.86 mg.g-1 adsorbed dye per g of fabric, that is equivalent to 80 % of dye adsorption.

scholarly journals Effects of Moringa oleifera Lam. and Azadirachta indica A. Juss. leaf extract in treatment of tannery effluent

Our Nature ◽  
2017 ◽  
Vol 14 (1) ◽  
pp. 47-53 ◽  
Author(s):  
Sankar Narayan Sinha ◽  
Dipak Paul ◽  
Karabi Biswas
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Azadirachta Indica ◽  
Leaf Extract ◽  
Moringa Oleifera ◽  
Waste Water Treatment ◽  
Tannery Effluent ◽  
Leaf Extracts ◽  
Tannery Waste ◽  
Tannery Waste Water

The effect of leaf extracts of Moringa oleifera and Azadirachta indica using ethanol as solvent on tannery waste water treatment was investigated for a period of five days and their phytochemical constituents were analyzed. All the extracts were found to be efficient in the clarification and sedimentation of total solids in the tannery waste water sample. On the 5th day, sample treated with 10 ml of extract showed higher reduction of electrical conductivity, pH, chloride, sulfate along with dissolved oxygen. The significant reduction of these pollution indicating parameters of the tannery effluent indicated its high applicability to treat the tannery wastes along with other waste water treatment in near future. This is the first report of decontamination of tannery waste water by Azadirachta indica leaf extract. This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. 

The new technology of waste water treatment by using bioreactors with bio membranous movable bed – biochips

2020 ◽  
Vol 10 (3) ◽  
pp. 276-292
Author(s):  
Maria Y. Savostyanova ◽  
◽  
Lidia А. Norina ◽  
Arina V. Nikolaeva ◽  
◽  
...  
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Water Resources ◽  
Waste Water Treatment ◽  
Combined Treatment ◽  
Research Work ◽  
Pollution Level ◽  
Waste Waters ◽  
Treatment Facilities ◽  
Movable Bed

Retaining of water resources quality is one of the global ecological problems of the modern time. The most promising direction in solving the problem of water resources protection is the reduction of negative environmental influence of waste water from production facilities by upgrading the existing water treatment technologies. To treat utility water, technical and rain water from site facilities of Transneft system entities, the specialists developed and approved standard technological diagrams, which are used in producing treatment facilities. The standard technological diagrams provide for all necessary stages of waste water treatment ensures the reduction of pollution level to normal values. However, during operation of treatment facilities it was established, that to ensure the required quality of waste water treatment with initially high levels of pollution, the new technological solutions are necessary. The author presents the results of scientific-research work, in the context of which the best affordable technologies were identified in the area of the treatment of waste water with increased content of pollutants and non-uniform ingress pattern. On the basis of the research results the technical solutions were developed for optimization of operation of existing waste water treatment facilities by means of using combined treatment of technical and rain waters and utility waste waters and applying bioreactor with movable bed – biochips. The use of bioreactor with movable bed allows the increase in the area of active surface, which facilitates increase and retention of biomass. Biochips are completely immersed into waste waters, and biofilm is formed on the entire volume of immersion area, facilitating retention of biomass and preventing formation of sediments. Due to mixing the floating device with biofilm constantly moves along the whole area of bioreactor, and, in doing so, speeds up biochemical processes and uniformity of treatment. The advantages of a bioreactor with movable bed – its active sludge durability against increased and changing pollutant concentrations, change of waste water temperature and simplicity of application – ensured the possibility of its use for blending utility waters, technical and rain waters.

REVIEWS OF ELECTROCOAGULATION PROCESS ON WASTE WATER TREATMENT TECHNOLOGY

2017 ◽  
Vol 9 (1) ◽  
Author(s):  
Taty Hernaningsih
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Removal Efficiency ◽  
Industrial Waste ◽  
Waste Water Treatment ◽  
Treatment Technique ◽  
Industrial Waste Water ◽  
Strong Current ◽  
Current Voltage ◽  
Electrocoagulation Process

Waste water treatment by industry usually uses chemicals that may lead to additional environmental pollution load. On the other hand, water demand increases and environmental regulations regarding waste water disposal requirements that apply more stringent. It is necessary for waste treatment technique that accommodate this requirement. Electrocoagulation process is a technique of wastewater treatment that has been chosen because the technique is environmentally friendly. This paper will review some of the research or application electrocoagulation process which is conducted on industrial waste water. Types of industrial waste water that is to be reviewed include: industries batik, sarongs, textiles, palm oil, slaughterhouses, food, leather tanning, laundry, pulp and paper. Overview reviewed in this research include the waste water treatment process in several processing variations such as: change in time, electricity and kind of electrodes. The results of the research with electrocoagulation process in the industry are the removal efficiency of TSS, COD, BOD5, Chrome, phosphate, surfactants, color turbidity influenced by several factors including time, strong current, voltage, distance and type of electrode and pH. The results of the study with electrocoagulation process in the industry is the removal efficiency of TSS, COD, BOD5, chromium, phosphate, surfactant, turbidity color that are influenced by several factors including time, strong current, voltage, distance and type of electrode and pH. It is hoped the information presented in this article can be a reference for similar research for the improvement of research on the process ektrokoagulasi.Key words: elektrocoagulation, removal eficiency, environmental friendly

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