Wastewater sludge treatment at the municipal wastewater treatment facilities with the purpose of its further utilization

2021 ◽  
pp. 46-51
Author(s):  
Ю.А. Егорова ◽  
В.И. Кичигин ◽  
О.И. Нестеренко ◽  
А.А. Юдин
Keyword(s):  
Wastewater Treatment ◽  
Municipal Wastewater ◽  
Wastewater Sludge ◽  
Mineral Fertilizers ◽  
Municipal Wastewater Treatment ◽  
Urban District ◽  
Sludge Treatment ◽  
Technological Waste ◽  
Treatment Facilities ◽  
Water And Wastewater

Осадки городских очистных канализационных сооружений являются самым массовым технологическим отходом, создающим проблемы утилизации для любого города. Рассмотрены возможные методы обработки осадков сточных вод на городских очистных канализационных сооружениях городского округа Самара с целью их последующей утилизации. Обозначены причины и приведены документальные подтверждениянекорректности возложения ответственности за обращение с такими отходами только на организации водопроводно-канализационного хозяйства. Рассмотрен способ захоронения обезвоженного осадка сточных вод в обвалованном полигоне. Установлено, что обработанные на очистных сооружениях осадки относятся к V классу опасности для окружающей среды. Обработанные, стабилизированные, подсушенные, обезвреженные отходы осадков сточных вод (малоопасный осадок с песколовок при очистке хозяйственно-бытовых и смешанных сточных вод, практически не опасный осадок с песколовок при очистке хозяйственно-бытовых и смешанных сточных вод и избыточный ил биологических очистных сооружений в смеси с сырым осадком) могут быть использованы в качестве наполнителей бетонно-цементных смесей и органоминеральных удобрений или переданы для утилизации сторонним организациям. Sludge from the municipal wastewater treatment facilities is the most massive technological waste that causes trouble for any city. Possible methods of wastewater sludge treatment at the municipal wastewater treatment facilities of the Samara Urban District with the purpose of its further utilization are considered. The reasons are indicated and documentary evidence of the incorrectness of assigning the responsibility for processing such wastes only to the water and wastewater utilities is provided. The method of landfilling dewatered wastewater sludge in a ridged landfill is considered. It has been established that the sludge processed at the wastewater treatment facilities is referred to the V class of environmental hazard. Sludge subjected to the treatment, stabilization, drying and neutralization (low hazardous sludge from grit chambers for domestic and mixed wastewater treatment; almost non-hazardous sludge from grit chambers for domestic and mixed wastewater treatment and excess sludge from biological treatment facilities mixed with raw sludge) can be used as fillers for concrete-cement mixtures and organo-mineral fertilizers or transferred for disposal to outside companies.

Study of the chemical removal of phosphorus at the municipal wastewater treatment facilities of the Samara urban district

2021 ◽  
pp. 32-37
Author(s):  
Ю.А. Егорова ◽  
С.В. Степанов ◽  
О.И. Нестеренко ◽  
Т.А. Стрелкова
Keyword(s):  
Wastewater Treatment ◽  
Aluminum Sulfate ◽  
Municipal Wastewater ◽  
Treatment Plant ◽  
Main Stage ◽  
Municipal Wastewater Treatment ◽  
Urban District ◽  
Mixed Liquor ◽  
Treatment Facilities ◽  
Fold Excess

Определены параметры реагентного удаления фосфора из сточных вод г. Самары. Исследования проводились методом пробного коагулирования исходной и осветленной сточной воды и иловой смеси аэротенков. Установлено, что при одинаковых дозах реагента наиболее глубокое удаление фосфора происходит из иловой смеси. При использовании сульфата алюминия удаление фосфора фосфатов происходило на 0,3–1,6 мг/л глубже, чем при обработке полиоксихлоридом алюминия «Аква-Аурат-30Ô», в зависимости от исходных концентраций. Содержание остаточного алюминия в очищенной воде при использовании «Аква-Аурат-30Ô» в среднем было на 8% ниже, чем при использовании сульфата алюминия, – 0,1680,221 мг/л против 0,1730,274 мг/л. Сравнительные результаты реагентной обработки коагулированием с применением флокулянтов и без них показали, что дополнительное дозирование флокулянта не привело к повышению эффективности удаления фосфора. Определено, что при концентрации фосфора фосфатов в иловой смеси 3,7–5,2 мг/л для достижения эффективности очистки выше 85% требовался 1,3–1,8-кратный избыток сульфата алюминия, а при более низких концентрациях 1,23–1,87 мг/л данная эффективность достигалась лишь при 3,1–5-кратном избытке реагента. Результаты исследований использованы в проекте реконструкции сооружений доочистки канализационных очистных сооружений г. Самары, которым предусмотрено химическое удаление фосфора в дополнение к улучшенному процессу биологического удаления фосфора. Принятая расчетная доза сульфата алюминия 10 мг/л по товарному продукту позволит снизить концентрацию фосфатов после основной ступени биологической очистки с 0,53 до 0,2 мг/л. The parameters of the chemical removal of phosphorus from wastewater in Samara have been determined. The studies were carried out by the method of trial coagulation of raw wastewater, primary effluent and mixed liquor from the aeration tanks. It was found that at the same doses of the chemical, the enhanced removal of phosphorus occurs from the sludge mixture. While using aluminum sulfate, the removal of phosphorus phosphates was enhanced by 0.3–1.6 mg/l more than while adding Aqua-Aurat-30TM aluminum polyoxychloride, depending on the initial concentrations. The concentration of residual aluminum in the effluent while using Aqua-Aurat-30TM was on average 8% lower than while using aluminum sulfate – 0.168–0.221 mg/l versus 0.173–0.274 mg/l. Comparative results of the chemical coagulation with the use of flocculants and without them showed that additional dosing flocculant did not result in an increase in the efficiency of phosphorus removal. It was determined that to achieve above 85% treatment efficiency at a phosphorus-phosphate concentration in the mixed liquor of 3.7–5.2 mg/l, a 1.3–1.8-fold excess of aluminum sulfate was required, and at lower concentrations of 1.23– 1.87 mg/l, this efficiency was achieved only with a 3.1–5-fold excess of the chemical. The research results were used in the project of upgrading a tertiary treatment plant at the Samara wastewater treatment facilities, that provided for the chemical removal of phosphorus in addition to the enhanced process of biological removal of phosphorus. The accepted calculated dose of aluminum sulfate 10 mg/l for a commercial product will reduce the concentration of phosphates after the main stage of biological treatment from 0.53 to 0.2 mg/l.

Improvement and development of the water supply and wastewater disposal systems in Samara

2021 ◽  
pp. 14-21
Author(s):  
В.В. Бирюков ◽  
Д.С. Ракицкий ◽  
С.А. Петропавловский
Keyword(s):  
Wastewater Treatment ◽  
Water Supply ◽  
Municipal Wastewater ◽  
Cold Water ◽  
Municipal Wastewater Treatment ◽  
Urban District ◽  
Wastewater Disposal ◽  
The Public ◽  
Investment Program ◽  
Treatment Facilities

Представлена информация о разработке специалистами ООО «Самарские коммунальные системы» инвестиционной программы по строительству, реконструкции и модернизации систем коммунального водоснабжения и водоотведения г. о. Самара на 2019–2023 годы в соответствии с «Концепцией развития и реконструкции систем водоснабжения и водоотведения г. о. Самара на 2018–2047 годы». ООО «Самарские коммунальные системы» с 2013 по 2019 г., за период действия государственно-частного партнерства, реализованы мероприятия по строительству, реконструкции и модернизации систем коммунального водоснабжения и водоотведения г. о. Самара на 2,15 млрд руб. За это время в Самаре обновлено оборудование на насосно-фильтровальных станциях, городских очистных канализационных сооружениях, насосных станциях подкачки и канализационных насосных станциях, переложено 65,3 км водопроводных и 34,5 км канализационных сетей. Результатом реализации инвестиционной программы будет улучшение качества и повышение надежности холодного водоснабжения, снижение технологических повреждений и аварийных ситуаций на объектах водоснабжения и водоотведения городского округа Самара, обеспечение технической возможности подключения объектов нового строительства. Information is presented on the development by the specialists of «Samarskie Kommunal’nye Sistemy», LLC, of an investment program for the construction, reconstruction and upgrade of the municipal water supply and wastewater disposal systems in the Samara Urban District for 2019–2023 in accordance with the «Concept of Development and Reconstruction of the Water Supply and Wastewater Disposal Systems in the Samara Urban District for 2018–2047». For the period of the public-private partnership 2013–2019 «Samarskie Kommunal’nye Sistemy», LLC has implemented the program of constructing, reconstructing and upgrading the public water supply and wastewater disposal systems in the Samara Urban District worth a total of 2.15 billion rubles. During this time the equipment at the pumping filtration stations, boosting pumping stations, and at the municipal wastewater treatment facilities in Samara has been renewed; 65.4 km of the water distribution network and 34.5 km of the sewer network have been relayed. The implementation of the investment program will provide for improving the quality and reliability of the cold water supply, reducing technological damages and failures at the water supply and wastewater treatment facilities in the Samara Urban District, and ensuring the technical ability to connect new construction facilities.

scholarly journals Suitability of Wastewater Sludge for Utilization in the Leningrad Region (Russia)

2017 ◽  
pp. 188-196
Author(s):  
Hanna Värri ◽  
Jouni Havukainen ◽  
Mika Horttanainen Horttanainen
Keyword(s):  
Wastewater Treatment ◽  
Municipal Wastewater ◽  
Wastewater Treatment Plants ◽  
Inorganic Compounds ◽  
Treatment Method ◽  
Wastewater Sludge ◽  
Leningrad Region ◽  
Municipal Wastewater Treatment ◽  
Sludge Treatment ◽  
Nutrient Emissions

Insufficient wastewater treatment causes serious problems for the environment and health in the Leningrad Region. Even though wastewater treatment has been improving during the last decade, almost no attention has been paid to the wastewater sludge treatment. Nutrient emissions from the organic wastes, including wastewater sludge, are among the most significant sources of the eutrophication of the Baltic Sea. Disposal of sludge causes also significant greenhouse gas emissions, polluting local water resources and filling up the landfill sites. Currently the main treatment method of wastewater sludge in Russia is so called aging. This means that sludge is stored in piles from some months up to some years, and after that the sludge is disposed to landfills. In order to develop wastewater sludge treatment, it is essential to know the properties of the material treated. In Russia, wastewater sludge is often expected to contain high amounts of heavy metals. This is a significant challenge for material or energy recovery from the sludge. Different possible treatment methods of wastewater sludge are discussed in this paper. The properties and composition of wastewater sludge from two different municipal wastewater treatment plants are defined and discussed in the paper. The main properties are volatile and total solids, moisture and ash content, inorganic compounds, heavy metal contents, and the lower heating value of dry matter. The effect of the properties on energy and nutrient recovery purposes are evaluated.

Application of Ozone and UV254 Radiation for Effluent Disinfection at Municipal Wastewater Treatment Facilities

2011 ◽  
Vol 2011 (3) ◽  
pp. 328-349
Author(s):  
Ernest R. Blatchley ◽  
ShihChi Weng ◽  
Mehrnaz Zare Afifi ◽  
Hsiao-Han Chiu ◽  
Douglas B. Reichlin ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Municipal Wastewater ◽  
Municipal Wastewater Treatment ◽  
Treatment Facilities

Application of Biotechnology to Municipal Wastewater Treatment

1991 ◽  
Vol 23 (10-12) ◽  
pp. 1723-1732 ◽  
Author(s):  
T. Matsui ◽  
S. Kyosai ◽  
M. Takahashi
Keyword(s):  
Wastewater Treatment ◽  
Genetic Engineering ◽  
Municipal Wastewater ◽  
Engineering Application ◽  
Municipal Wastewater Treatment ◽  
Sludge Treatment ◽  
National Project ◽  
Wastewater Treatment Systems ◽  
Raw Wastewater

Application of biotechnology to wastewater treatment for its improvement and greater understanding was investigated in the Japanese national project named Biofocus WT as to a microorganism bank, genetic engineering application, immobilization of microorganisms, bioreactors for wastewater treatment, bioreactors for sludge treatment, SS separators for raw wastewater, biosensors and new wastewater treatment systems.

Applications and limitations of ADM 1 in municipal wastewater solids treatment

2006 ◽  
Vol 54 (4) ◽  
pp. 77-82 ◽  
Author(s):  
B.R. Johnson ◽  
Y. Shang
Keyword(s):  
Wastewater Treatment ◽  
Municipal Wastewater ◽  
Metal Phosphate ◽  
Municipal Wastewater Treatment ◽  
Digested Sludge ◽  
Chemical Equilibria ◽  
Actual Operating ◽  
Wide Range ◽  
Treatment Facilities ◽  
Inorganic Reactions

The ADM 1 model has been implemented in a steady-state whole wastewater plant simulator. The ADM 1 model has been in use with good success for approximately 2 years on a wide range of wastewater treatment facilities. However, a number of modifications were necessary to allow it to be used in the context of municipal wastewater treatment. It was found that the model's use was greatly simplified if used in conjunction with a larger plant simulator to assist in the feed fractionation. It was also found that a better fit to actual operating data was achieved if some of the slowly biodegradable particulate fraction was partitioned into ADM particulate fractions other than the composite fraction. Another significant limitation of the model is in the absence of phosphorus modeling. The ADM model needs to have phosphorus handling for all the relevant fractions, and needs to include the handling of inorganic reactions such as struvite precipitation and metal phosphate/metal hydroxide precipitation. Activity effects on chemical equilibria are significant when considering phosphorus. Also of importance in wastewater treatment is the fate of sulfur compounds. This includes the generation of H2S in the digester gas and the fate of the sulfur species in the digested sludge (as a predictor of odour-generating potential).

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