scholarly journals Wastewater deodorization: problems and solutions

2021 ◽  
Vol 937 (4) ◽  
pp. 042064
Author(s):  
E Glushchenko ◽  
A Kadyseva
Keyword(s):  
Wastewater Treatment ◽  
Treatment Process ◽  
Technological Parameters ◽  
Wastewater Treatment Process ◽  
Indian American ◽  
Sludge Digestion ◽  
Volatile Organic ◽  
Problems And Solutions ◽  
Treatment Facilities ◽  
Sludge Thickening

Abstract The problem of specific malodours odorants, emitted from the territory of wastewater and sludge treatment facilities is set in the article. This article presents a critical review concerning the reasons of odorants formation during wastewater treatment, their influence on human health and ways of wastewater and sludge deodorization. Review is presented by 52 resources of Russian, Chinese, Italian, Greek, Indian, American and other researches from 2000 to 2021 years. According to the review the main sources of odours emission are units of mechanical treatment, sludge thickening and sludge digestion. The main odorants are volatile organic compounds (VOCs), hydrogen sulphide, ammonia, particulate matters and greenhouse gases (carbon dioxide, methane, nitrogen oxide). Based on the article, there are two ways of emission controlling: controlling the technological parameters of wastewater treatment process or gases treatment at specific facilities (adsorbers, biofilters, bioscrubbers, chemical scrubbers).

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 Effects of reactive filters based on modified zeolite in dairy industry wastewater treatment process

2013 ◽  
Vol 19 (4) ◽  
pp. 583-592 ◽  
Author(s):  
Srdjan Kolakovic ◽  
Dragoslav Stefanovic ◽  
Dragan Milicevic ◽  
Slavisa Trajkovic ◽  
Slobodan Milenkovic ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Food Industry ◽  
Treatment Process ◽  
Dairy Industry ◽  
Technological Parameters ◽  
Wastewater Treatment Process ◽  
High Level ◽  
Filtration Properties ◽  
Industry Wastewater

Application of adsorbents based on organo-zeolites has certain advantages over conventional methods applied in food industry wastewater treatment process. The case study presented in this paper examines the possibilities and effects of treatment of dairy industry wastewater by using adsorbents based on organo-zeolites. The obtained results indicate favorable filtration properties of organo-zeolite, their high level of adsorption of organic matter and nitrate nitrogen in the analyzed wastewater. This paper concludes with recommendations of optimal technical and technological parameters for the application of these filters in practice.

Enabling wastewater treatment process automation: leveraging innovations in real-time sensing, data analysis, and online controls

2020 ◽  
Vol 6 (11) ◽  
pp. 2973-2992
Author(s):  
Wenjin Zhang ◽  
Nicholas B. Tooker ◽  
Amy V. Mueller
Keyword(s):  
Wastewater Treatment ◽  
Data Analysis ◽  
Real Time ◽  
Treatment Process ◽  
Resource Recovery ◽  
Process Automation ◽  
Wastewater Treatment Process ◽  
Sensing Data ◽  
Treatment Facilities

The primary mandate of wastewater treatment facilities is the limitation of pollutant discharges, however both tightening of permit limits and unique challenges associated with improving sustainability (i.e., resource recovery) demand innovation.

Species of Volatile Organic Compounds from Municipal Wastewater Treatment Plant

2011 ◽  
Vol 183-185 ◽  
pp. 1057-1060
Author(s):  
Li Kun Huang ◽  
Guang Zhi Wang ◽  
Jin Long Zuo
Keyword(s):  
Molecular Weight ◽  
Wastewater Treatment ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Organic Pollutants ◽  
Wastewater Treatment Plant ◽  
Treatment Process ◽  
Treatment Plant ◽  
Wastewater Treatment Process ◽  
Volatile Organic

In order to investigate the characteristic of volatile organic compounds (VOCs) from wastewater treatment plant (WWTP), the air and water samples were collected. The air samples were extracted and identified by GC/MS. The atmospheric VOCs species from all WWTP units were tested. It was shown that the main fugitive sources were primary clarifier and the room of sludge dewatering. The numbers were 33 and 30. The total species of VOCs emitted varied with a range of 16 to 33. The relationship between VOCs species and the change of water quality were discussed. The increasing of VOCs species was related with the higher SUVA, and the molecular weight of VOCs species in air sample gradually become lower along the wastewater treatment process. In the wastewater treatment process，the function of microbe did not contribute the whole effort on the removing of organic pollutants. VOCs volatilized from water phase could also reduce organic pollutants in water phase. In the whole WWTP, the main VOCs species were alkyl with small molecular weight, aromatic hydrocarbon material and naphthalene. Halogenated hydrocarbon was detected in primary treatment unit and anoxic tank.

Comparison of F-specific bacteriophage, enterococci, and faecal coliform densities through a wastewater treatment process employing oxidation ponds

1995 ◽  
Vol 31 (5-6) ◽  
pp. 85-89 ◽  
Author(s):  
S. J. Turner ◽  
G. D. Lewis
Keyword(s):  
Wastewater Treatment ◽  
Treatment Process ◽  
Faecal Coliform ◽  
Indicator Organisms ◽  
Faecal Coliforms ◽  
Wastewater Treatment Process ◽  
Oxidation Pond ◽  
Oxidation Ponds ◽  
Specific Bacteriophage

Over a 12 month period F-specific bacteriophages, faecal coliforms and enterococci were compared as microbial indicator organisms for the quality of a wastewater treatment (oxidation pond) system. Results suggest that enterococci may be the most useful indicator for oxidation pond systems.

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