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 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 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.

Modeling Mass Transfer in Biological Wastewater Treatment Processes

1986 ◽  
Vol 18 (6) ◽  
pp. 35-45 ◽  
Author(s):  
John C. Kissel
Keyword(s):  
Mass Transfer ◽  
Computer Simulation ◽  
Wastewater Treatment ◽  
Biological Treatment ◽  
Process Models ◽  
High Rate ◽  
Biological Wastewater Treatment ◽  
Trickling Filter ◽  
Treatment Processes ◽  
Individual Effects

Parameters characterizing intrasolid, liquid/solid, and gas/liquid mass transport phenomena in biological treatment systems are required if mass transfer is to be included in process models. Estimates of such parameters are presented and discussed. Collective and individual effects of mass transfer resistances are illustrated by computer simulation of a high-rate trickling filter.

scholarly journals ANALYSIS OF PHYSICOCHEMICAL WASTEWATER TREATMENT IN ARCTIC ZONES

2020 ◽  
Vol 22 (1) ◽  
pp. 152-163
Author(s):  
E. I. Vialkova ◽  
E. S. Glushchenko ◽  
T. S. Velizhanina ◽  
E. Y. Osipova
Keyword(s):  
Wastewater Treatment ◽  
Biological Treatment ◽  
Wastewater Discharge ◽  
Total Change ◽  
Climatic Zones ◽  
Physicochemical Treatment ◽  
Treatment Facilities ◽  
The Russian Federation ◽  
Sewage Systems ◽  
Design Construction

The large part of the Russian Federation locates in arctic and subarctic climatic zones, which determine the specificity of design, construction and operation of sewage systems of these regions. Nowadays, the most part of small Arctic towns has no wastewater treatment facilities, while the available biological treatment facilities do not work properly. An alternative way is physicochemical treatment, which is more resistant to severe climate and volley wastewater discharge than biological treatment. The paper presents the research results of total change the biological into physicochemical treatment. The main stages of such a treatment include coagulation, filtration, oxidation and two-stage filtration (mechanical and absorption). The experiments show a 90.8% decrease in the concentration of chemical oxygen and a 74% and 82.5% decrease in nitrates and ammonium.

Stages of launching a biological treatment plant at the wastewater treatment facilities with dosing easily oxidable organic matter

2021 ◽  
pp. 38-46
Author(s):  
В.А. Кондрашев ◽  
С.Г. Метелица
Keyword(s):  
Organic Matter ◽  
Wastewater Treatment ◽  
Biological Treatment ◽  
Treatment Plant ◽  
Commercial Fishing ◽  
Effluent Quality ◽  
Start Up ◽  
Numerous Experimental Data ◽  
Treatment Facilities ◽  
Equipment Configuration

Рассмотрены вопросы, связанные с проведением пусконаладочных работ биоблока станции очистки хозяйственно-бытовых и близких к ним по составу сточных вод при пробном пуске в эксплуатацию очистных сооружений. Подробно рассмотрены этапы пусконаладочных работ биоблока очистных сооружений с «затравкой» активным илом из действующих биологических очистных сооружений и с дозировкой легкоокисляемой органики. Описан состав оборудования станции КОС-9 производства «Гермес Групп». Рассмотрены все этапы пусконаладочных работ биоблока на примере запуска очистных сооружений КОС-9 с привлечением многочисленных опытных данных. Определены периоды этапов пусконаладки биоблока. Приведены проблемы наладки биоблока и пути их решения с достижением требуемого результата. Технология, используемая на станции, обеспечивает очистку сточных вод, соответствующую требованиям, предъявляемым к выпуску очищенных стоков в водоем рыбохозяйственного значения. Issues related to commissioning a biological treatment plant at the facilities for household and similar in composition wastewater treatment during the trial start of the treatment facilities are considered. The stages of commissioning a biological treatment plant at the wastewater treatment facilities with «inoculating» activated sludge from the operating biological treatment facilities and with dosing easily oxidable organic matter are considered in detail. The equipment configuration of the WWTP-9 produced by Germes Group is described. All stages of the biological treatment plant commissioning are considered through the example of the start-up of WWTP-9 with the use of numerous experimental data. The periods of biological treatment plant commissioning stages have been determined. The problems of adjusting the biological treatment plant and the ways of their elimination to achieve the required result are presented. The technology used at the WWT facilities provides for the effluent quality that meets the requirements for the discharge into a water body of commercial fishing importance.

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.

Review on biological wastewater treatment and resources recovery: attached and suspended growth systems

2019 ◽  
Vol 80 (11) ◽  
pp. 2013-2026 ◽  
Author(s):  
Lakshmi Machineni
Keyword(s):  
Wastewater Treatment ◽  
Biological Treatment ◽  
Film Growth ◽  
Value Added ◽  
Microbial Consortia ◽  
Biological Wastewater Treatment ◽  
Suspended Growth ◽  
Growth System ◽  
Pure Cultures ◽  
Biological Methods

Abstract The treatment of wastewater for reuse is a potential solution to meet ever increasing urban, industrial, agricultural, and environmental demands across the world, where clean water availability is scarce. There are several traditional wastewater treatment processes that offer varying degrees of effectiveness in addition to presenting environmental, economic, and social disadvantages. Development of promising and inexpensive technologies to provide the reusable water in needful amounts using wastewaters as a cheap source of key nutrients and organic matter is required. Wastewater treatment by biological methods is becoming more important in the light of recovering value-added plant nutrients, heavy metals, biosolids, and bioenergy resources. Different types of solid contaminants in effluents can be removed simultaneously by pure cultures or mixed microbial consortia. Based on the structural organization of microbial biomass, biological treatment systems are classified into two types: dispersed growth system and attached growth system. Biological treatment methods associated with fixed-film growth have been recognized as highly effective and more energy efficient than suspended growth systems. This review discusses the recent breakthroughs in advanced biological wastewater treatment using both the systems, and also focuses on key energetic resources recovery driven by biological technologies.

ANALYSIS OF THE PROCESS OF BIOLOGICAL WASTEWATER TREATMENT WITH NUTRIENT REMOVAL

2015 ◽  
Vol 5 (1) ◽  
pp. 52-53
Author(s):  
Vita Yu. BORISOVA
Keyword(s):  
Wastewater Treatment ◽  
Nutrient Removal ◽  
Wastewater Treatment Plants ◽  
Design Parameters ◽  
Biological Wastewater Treatment ◽  
Basic Design ◽  
Nitrification And Denitrification

The analysis of the structures of biological wastewater treatment plants with nutrient removal, basic design parameters of the processes of nitrification and denitrification are presented.

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.

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