scholarly journals FENTON OXIDATION AS AN ALTERNATIVE TO BIOLOGICAL WASTEWATER TREATMENT

2020 ◽  
Author(s):  
T.M. Ganiev ◽  
Keyword(s):  
Wastewater Treatment ◽  
Activated Sludge ◽  
Biological Treatment ◽  
Fenton Oxidation ◽  
Biological Wastewater Treatment ◽  
Cleaning Method ◽  
Advantages And Disadvantages ◽  
Treatment Facilities ◽  
Oxidation Reactor

This article discusses the possibility of replacing biological treatment units with activated sludge with a Fenton oxidation reactor. The main advantages and disadvantages of this cleaning method are determined. A possible scheme for the implementation of the project of treatment facilities operating on the principle of Fenton oxidation is considered.

scholarly journals Fractal analysis of biological wastewater treatment efficiency

2018 ◽  
Vol 251 ◽  
pp. 06005 ◽  
Author(s):  
Nazira Dzhumagulova ◽  
Ilya Svetkov ◽  
Vladimir Smetanin ◽  
Nguyen Dinh Dap
Keyword(s):  
Wastewater Treatment ◽  
Comparative Analysis ◽  
Activated Sludge ◽  
Biological Treatment ◽  
Sewage Treatment ◽  
Quantitative Composition ◽  
Biological Wastewater Treatment ◽  
Treatment Facility ◽  
Wastewater Purification ◽  
Biological Methods

The purpose of the present research was to enhance the efficiency of biological wastewater treatment through the direct impact on the metabolism of activated sludge. In the course of research, species and quantitative composition of biological community of activated sludge in aeration tanks during wastewater purification process was studied. Comparative analysis was carried out for linen production wastewater and household sewage. Possible application of biological treatment in linen production was evaluated. Proposals were developed on creation of controllable biological treatment facility. In this paper, biological methods are shown to be efficient for household sewage treatment. Comparative analysis was carried out for linen production wastewater and household sewage. Possible application of biological treatment in linen production was evaluated. Proposals were developed on creation of controllable biological treatment facility.

Evaluation of the Effectiveness of the Use of Enzyme Complexes in the Process of Biological Treatment of Wastewater from Pulp and Paper Enterprises

2018 ◽  
Vol 22 (6) ◽  
pp. 15-19
Author(s):  
E.H. Sakaeva ◽  
L.V. Rudakova
Keyword(s):  
Waste Water ◽  
Wastewater Treatment ◽  
Beneficial Effect ◽  
Activated Sludge ◽  
Biological Treatment ◽  
Experimental Studies ◽  
Pulp And Paper ◽  
Technological Scheme ◽  
Biological Wastewater Treatment ◽  
Enzyme Complexes

The results of experimental studies on the evaluation of the possibility of using enzyme complexes in the biological treatment of waste water from pulp and paper enterprises are presented. The use of enzyme complexes will increase the efficiency of wastewater treatment by COD and BOD, and will also have a beneficial effect on the hydrochemical and hydrobiological characteristics of activated sludge. Experimental studies have determined the points of introduction of enzyme complexes into the technological scheme of biological wastewater treatment.

scholarly journals MODELING OF WASTEWATER TREATMENT

2021 ◽  
Author(s):  
Yu.S. Chirikanova ◽  
Keyword(s):  
Mathematical Modeling ◽  
Mathematical Model ◽  
Wastewater Treatment ◽  
Activated Sludge ◽  
Water Purification ◽  
Software Package ◽  
Biological Treatment ◽  
Aeration Tank ◽  
Biological Wastewater Treatment ◽  
Biological Treatment System

The paper deals with the problem of mathematical modeling of biological wastewater treatment. The peculiarity of the biological treatment system is that a block with activated sludge, called an aeration tank, is used for water purification. To describe the process of biological wastewater treatment in aeration tanksa mathematical model developed in the GPS-X software package is proposed.

scholarly journals The present situation and trends of wastewater treatment in small settlements and rural areas of Lithuania

2019 ◽  
pp. 243-250
Author(s):  
Regimantas Dauknys
Keyword(s):  
Wastewater Treatment ◽  
Activated Sludge ◽  
Surface Waters ◽  
Rural Areas ◽  
Biological Treatment ◽  
Wastewater Treatment Plants ◽  
Present Situation ◽  
Treatment Facilities ◽  
Biological Filters ◽  
Activated Sludge Systems

This article presents the wastewater treatment in small settlements and rural areas ofLithuania, including descriptions of capacity and loading of wastewater treatment plants(WWTPs), types of treatment facilities, and development trends of biological treatmentfacilities. In 2000 Lithuania had 597 WWTPs with capacity up to 1000 m3/d, 95% of them arethe biological treatment plants. Today the most of these WWTPs are unloaded due to thetendency to centralise wastewater treatment in rural areas of Lithuania that were in the eightand ninth decades.In small settlements and rural areas of Lithuania the aeration facilities are predominant. In theeight and ninth decades practically only the activated sludge systems were built. The situationbegan to change in the last decade of the last century: the biological filters and soil filtrationfacilities with discharge into surface waters were applied more frequently, so the building ofaeration facilities started to decrease.

scholarly journals Activated sludge biocenosis regulation for intensifying aerating constructions

2018 ◽  
Vol 193 ◽  
pp. 02015
Author(s):  
Nazira Dzhumagulova ◽  
Ivan Gavrilov ◽  
Dinh Dap Nguyen
Keyword(s):  
Organic Matter ◽  
Wastewater Treatment ◽  
Activated Sludge ◽  
Continuous Flow ◽  
Quantitative Composition ◽  
Biological Wastewater Treatment ◽  
Biochemical Method ◽  
Active Sludge ◽  
Biochemical Processes ◽  
Treatment Facilities

One of the most effective methods of wastewater treatment is a biochemical method that almost completely disposes various dissolved organic matter. To improve the oxidation capacity of aerotanks and to control the biochemical processes of wastewater treatment, it was necessary to determine experimentally biocenosis variability influenced by the environment and other factors.The goal of the present research is intensification of biological wastewater treatment by means of direct effect upon the metabolism of activated sludge microorganisms. The experiment studied the organization of species and quantitative composition of active sludge biocenosis in aerotanks while removing contaminants from wastewater. The experiments were carried out in continuous-flow aerotanks of publicly owned treatment facilities. Everyday over a period of three weeks, samples of microorganisms were obtained from aerotanks, quality and quantity objectives of purified water.

FEATURES OF THE START OF BIOLOGICAL WASTEWATER TREATMENT FACILITIES IN THE MODES OF NITRIFICATION AND DENITRIFICATION

2018 ◽  
Vol 8 (3) ◽  
pp. 55-61 ◽  
Author(s):  
Nikolay S. SERPOKRYLOV ◽  
Elena V. VILSON ◽  
Lidia A. DOLZHENKO ◽  
Maram Ali SAIYD
Keyword(s):  
Wastewater Treatment ◽  
Biological Treatment ◽  
Magnetic Treatment ◽  
Biological Wastewater Treatment ◽  
Biological Factors ◽  
Urban Wastewater ◽  
Enzyme Preparations ◽  
Treatment Facilities ◽  
Nitrification And Denitrification

The main methods of intensifi cation of biological wastewater treatment by chemical, physical and biological factors are considered. The expediency of using biotechnological methods during commissioning works on biological treatment facilities in the modes of nitrifi cation and denitrifi cation, based on the use of biologic-enzyme preparations, magnetic treatment and lighting, is substantiated The results of research for urban wastewater on the model installation of bioreactors in the mode of nitrifi cation and denitrifi cation are given.

scholarly journals BIOLOGICAL TREATMENT OF WASTE PAPER RECYCLING PLANT WASTEWATER

2020 ◽  
Vol 25 (3) ◽  
pp. 14-21
Author(s):  
Ju. A. Feofanov ◽  
Keyword(s):  
Wastewater Treatment ◽  
Biological Treatment ◽  
Raw Materials ◽  
Biofilm Reactor ◽  
Waste Paper ◽  
Biological Wastewater Treatment ◽  
Technological Parameters ◽  
Paper Recycling ◽  
Moving Bed ◽  
Treatment Facilities

Introduction. Among characteristic features of waste paper recycling plant wastewater, the following can be distinguished: significant fluctuations in consumption and composition, high content of undissolved and dissolved substances (in particular, starch, fiber, dispersed thermoplastic and other substances). Local wastewater treatment can reduce the concentration of undissolved and — partially — dissolved contaminants. Besides, it makes it possible to reuse valuable substances and treated water in production. However, a significant amount of dissolved contaminants is dumped by factories at off-site biological treatment plants. In this case, bioreactors with suspended activated sludge (aeration tanks) as well as bioreactors with attached biomass are used for wastewater treatment. Methods. The purpose of the study was to determine the consumption and composition of wastewater discharged by waste paper recycling plants, as well as the technological parameters and performance of biological treatment facilities, including a moving bed biofilm reactor and aeration tanks. In-process control over the operation of treatment plants was carried out by means of instrumental measurements and laboratory analyses conducted according to standard methods. Results. The article examines the results of the operation of biological wastewater treatment facilities used to treat wastewater from a paper mill, where different grades of waste paper are used as raw materials. The main characteristics of biological wastewater treatment facilities’ operation have been identified. Relationships between the oxidation capacity and the load in terms of organic pollution have been obtained for a bioreactor with a moving bed (1st stage) and aeration tanks (2nd stage of biological wastewater treatment). Measures have been proposed to improve the performance of existing treatment plants.

scholarly journals The diversity of active microbial groups in an activated sludge process treating painting process wastewater

2020 ◽  
Vol 148 ◽  
pp. 01002
Author(s):  
Herto Dwi Ariesyady ◽  
Mentari Rizki Mayanda ◽  
Tsukasa Ito
Keyword(s):  
Wastewater Treatment ◽  
Microbial Community ◽  
16S Rrna ◽  
16S Rrna Gene ◽  
Activated Sludge ◽  
Biological Treatment ◽  
Rrna Gene ◽  
Activated Sludge Process ◽  
Painting Process ◽  
Process Wastewater

Activated sludge process is one of the wastewater treatment method that is applied for many wastewater types including painting process wastewater of automotive industry. This wastewater is well-known to have high heavy metals concentration which could deteriorate water environment if appropriate performance of the wastewater treatment could not be achieved. In this study, we monitored microbial community diversity in a Painting Biological Treatment (PBT) system. We applied a combination of cultivation and genotypic biological methods based on 16S rRNA gene sequence analysis to identify the diversity of active microbial community. The results showed that active microbes that could grow in this activated sludge system were dominated by Gram-negative bacteria. Based on 16S rRNA gene sequencing analysis, it was revealed that their microbial diversity has close association with Bacterium strain E286, Isosphaera pallida, Lycinibacillus fusiformis, Microbacterium sp., Orchobactrum sp., Pseudomonas guariconensis, Pseudomonas sp. strain MR84, Pseudomonas sp. MC 54, Serpens sp., Stenotrophomonas acidaminiphila, and Xylella fastidiosa with similarity of 86 – 99%. This findings reflects that microbial community in a Painting Biological Treatment (PBT) system using activated sludge process could adapt with xenobiotics in the wastewater and has a wide range of diversity indicating a complex metabolism mechanism in the treatment process.

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