Reduction of estrogenic activity of municipal wastewater by aerated lagoon treatment facilities

2003 ◽  
Vol 22 (1) ◽  
pp. 77-83 ◽  
Author(s):  
Robert B. Bringolf ◽  
Robert C. Summerfelt
Keyword(s):  
Municipal Wastewater ◽  
Estrogenic Activity ◽  
Treatment Facilities

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

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.

A conceptual model for decentralized municipal wastewater management

2018 ◽  
Vol 13 (1) ◽  
pp. 134-142 ◽  
Author(s):  
Diana Bernal
Keyword(s):  
Conceptual Model ◽  
Urban Areas ◽  
Municipal Wastewater ◽  
Cost Benefit Analysis ◽  
Cost Benefit ◽  
Wastewater Management ◽  
Benefit Analysis ◽  
Consultation Process ◽  
Treatment Facilities ◽  
Hierarchy Process

Abstract This paper proposes a conceptual model for selecting the centralization level for wastewater management in urban areas, which is associated with main sewage collectors and wastewater treatment facilities. The model is supported in the Analytical Hierarchy Process (AHP) and Cost-Benefit Analysis. Additionally, the model is based on the results of variables and indicators identified previously through an expert consultation process and prioritized by Ranking and Rating Multi-criteria Analysis. Three municipalities of Colombia were used as case studies for model validation purposes. As a result, decentralized plans can be a viable option when their associated benefits are quantified.

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).

scholarly journals Increasing the Efficiency of Pollutants Removal from Municipal Wastewater Using Biological Filters

2019 ◽  
Vol 69 (12) ◽  
pp. 3553-3556
Author(s):  
Mariana Mincu ◽  
Maria Iuliana Marcus ◽  
Mihaela Andreea Mitiu ◽  
Natalia Simona Raischi
Keyword(s):  
Municipal Wastewater ◽  
Oxygen Demand ◽  
Filling Material ◽  
Biological Filtration ◽  
Physico Chemical ◽  
Treatment Facilities ◽  
Pollutants Removal ◽  
Wastewater Samples ◽  
Chemical Water ◽  
Biological Filters

Biological filters are wastewater treatment systems that contain a granular filling material, which form an active biological film that contribute to the biooxidation of impurities from the wastewater. Recent research in the field aimed to improve the classical treatment facilities with aerobic fixed film by using inexpensive and easily accessible materials as filterable loading. Experiments have been carried out on biological filters loaded with volcanic tuff, with a diameter between 20-100 mm, supplied with municipal wastewater from primary settling. The biological filtration efficiency has been etablished throughout the continuous functioning of the experimental installation by physico-chemical water analysis. The analyzed indicators have been the ones stipulated by the legislation in force, namely: pH, chemical oxygen demand (COD), biochemical oxygen demand (BOD5), total suspended matter (TS), total nitrogen (TN), total phosphorus (TP), etc. The analysed wastewater samples have been average samples. The treatment efficiency have been calculated in various hypotheses, depending on the: installation capacity, hydraulic loading, organic loading.

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