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 Operational characteristics of the paper factory's biological wastewater treatment facilities

2020 ◽  
Vol 17 (3) ◽  
pp. 162-167
Author(s):  
Yu. A. Feofanov ◽  
Keyword(s):  
Wastewater Treatment ◽  
Raw Materials ◽  
Treatment Plant ◽  
Organic Pollution ◽  
Oxidative Capacity ◽  
Biological Wastewater Treatment ◽  
Cleaning Efficiency ◽  
Operational Characteristics ◽  
Treatment Facilities ◽  
Paper And Pulp

The results of the biological wastewater treatment facilities of the paper factory using raw materials of different kinds (waste paper and pulp) are analyzed. The main performance characteristics of these structures (oxidative capacity for organic pollution and cleaning efficiency) at different loads on them have been determined. Recommendations have been worked out to improve the performance and efficiency of the treatment plant.

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.

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 Determination of modeled costs at sewage treatment plants in the case of different sequences of treatment

Vestnik MGSU ◽  
2021 ◽  
pp. 1077-1087
Author(s):  
Nikolay A. Makisha
Keyword(s):  
Wastewater Treatment ◽  
Biological Treatment ◽  
Wastewater Treatment Plants ◽  
Sewage Treatment ◽  
Operating Costs ◽  
Technological Parameters ◽  
Submerged Membrane Bioreactor ◽  
Treatment Facilities ◽  
Definition Of ◽  
The Cost

Introduction. The article considers the definition of the key components of operating costs at wastewater treatment plants with a capacity of 1 to 100 thousand cubic meters per day by modeling using specialized software. Materials and methods. In the study, two technological cleaning schemes were investigated — the conventional line-up with biological aeration reactor and secondary clarifier and the scheme of biological aeration reactor with submerged membrane bioreactor for sludge separation. The other structures for the two facilities were identical. Since it was important to obtain results that could be used at real facilities, the values of concentrations of major pollutants typical for urban wastewater before treatment, as well as technological parameters of operation, were used as initial data for calculations. Results. As the results of calculations, the values of concentrations of pollutants in wastewater after treatment using both technological schemes and the values of the required volumes for the arrangement of biological treatment facilities and the area occupied by them were obtained and analyzed. Operating costs were considered in terms of electricity costs for the operation of biological treatment facilities and treatment facilities in General, as well as the specific cost of electricity for treatment 1 m3 of wastewater. In addition, the cost of purchasing membrane modules was calculated, which can be classified as operational due their replacement frequency of approximately every 7–10 years. Conclusions. The results of the study showed that application of membrane technologies at the stage of secondary treatment could have a significant potential for the reconstruction of wastewater treatment plants in conditions of increased productivity and limited opportunities for expanding the area.

Технологические аспекты обезвоживания осадков промышленно-дождевых сточных вод автотранспортных предприятий

2019 ◽  
pp. 25-30
Author(s):  
G. Variushina
Keyword(s):  
Wastewater Treatment ◽  
Moisture Content ◽  
Vacuum Filter ◽  
Operational Parameters ◽  
Technological Parameters ◽  
Wastewater Treatment Process ◽  
Motor Transport ◽  
Cationic Flocculant ◽  
Residual Sludge ◽  
Treatment Facilities

Приводятся сведения об условиях формирования, объемах, химическом составе и свойствах осадков очистных сооружений производственных сточных вод автотранспортных предприятий. Даны примеры технологических решений по обезвоживанию образующихся в процессе очистки шламов. Рассмотрены технологические аспекты процесса интенсификации механического обезвоживания уплотненных осадков с использованием высокомолекулярных полиэлектролитов. Представлены данные лабораторных экспериментов по выбору типа флокулянта, его дозы, технологических параметров процесса, а также результаты определения влажности обезвоженных осадков, полученные на модели барабанного вакуум-фильтра. Приведены примеры эффективных обезвоживающих аппаратов отечественного производства и их технические характеристики, рекомендации и критерии их выбора, а также факторы, оказывающие влияние на эксплуатационные параметры обезвоживающего оборудования. Установлено, что наилучшая обезвоживающая способность барабанных вакуум-фильтров (остаточная влажность шламов от 66 до 83) может быть достигнута при применении катионного флокулянта ВПК-402 для осадков различных производственных цехов автотранспортного предприятия.Information on the conditions of generation, volumes, chemical composition and properties of sludge generated at the industrial wastewater treatment facilities of motor transport enterprises is provided. Examples of process engineering solutions for dewatering sludge generated during the wastewater treatment process are given. The technological aspects of enhancing mechanical dewatering of thickened sludge using high-molecular polyelectrolytes are considered. The data of laboratory experiments on choosing the type of flocculant, its dose, technological parameters of the process, as well as the results of determining the moisture content of dewatered sludge obtained in a model of a drum vacuum filter are presented. Examples of effective domestically produced dewatering apparatus and their technical characteristics, recommendations and criteria for their selection, as well as factors influencing the operational parameters of the dewatering equipment are given. It is found that the highest dewatering capacity of drum vacuum filters (residual sludge moisture content from 66 to 83) can be achieved by using VPK-402 cationic flocculant for processing sludge generated at the workshop premises of a motor transport enterprise.

scholarly journals Moving bed biofilm reactor (MBBR) for dairy wastewater treatment

2020 ◽  
Vol 6 ◽  
pp. 340-344
Author(s):  
Andreia D. Santos ◽  
Rui C. Martins ◽  
Rosa M. Quinta-Ferreira ◽  
Luis M. Castro
Keyword(s):  
Wastewater Treatment ◽  
Biofilm Reactor ◽  
Dairy Wastewater ◽  
Moving Bed Biofilm Reactor ◽  
Moving Bed

Upgrading of a small wastewater treatment plant in a cold climate region using a moving bed biofilm reactor (MBBR) system

2000 ◽  
Vol 41 (1) ◽  
pp. 177-185 ◽  
Author(s):  
G. Andreottola ◽  
P. Foladori ◽  
M. Ragazzi
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Treatment Plant ◽  
Internal Surface ◽  
Full Scale ◽  
Biofilm Reactor ◽  
Cold Climate ◽  
Moving Bed Biofilm Reactor ◽  
Moving Bed ◽  
North East

The aim of this study was to evaluate the performance of a full-scale upgrading of an existing RBC wastewater treatment plant with a MBBR (Moving Bed Biofilm Reactor) system, installed in a tank previously used for sludge aerobic digestion. The full-scale plant is located in a mountain resort in the North-East of Italy. Due to the fact that the people varied during the year's seasons (2000 resident people and 2000 tourists) the RBC system was insufficient to meet the effluent standards. The MBBR applied system consists of the FLOCOR-RMP®plastic media with a specific surface area of about 160 m2/m3 (internal surface only). Nitrogen and carbon removal from wastewater was investigated over a 1-year period, with two different plant lay-outs: one-stage (only MBBR) and two stage system (MBBR and rotating biological contactors in series). The systems have been operated at low temperature (5–15°C). 50% of the MBBR volume (V=79 m3) was filled. The organic and ammonium loads were in the average 7.9 gCOD m−2 d−1 and 0.9 g NH4−N m−2 d−1. Typical carbon and nitrogen removals in MBBR at temperature lower than 8°C were respectively 73% and 72%.

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