scholarly journals Nature-Based Solutions for Wastewater Treatment

2021 ◽  
Keyword(s):  
Wastewater Treatment ◽  
Low Cost ◽  
Scientific Evidence ◽  
Treatment Plant ◽  
Domestic Wastewater ◽  
Local Context ◽  
Design Parameters ◽  
Efficient Treatment ◽  
Case Examples ◽  
Trade Offs

There are 2.4 billion people without improved sanitation and another 2.1 billion with inadequate sanitation (i.e. wastewater drains directly into surface waters), and despite improvements over the past decades, the unsafe management of fecal waste and wastewater continues to present a major risk to public health and the environment (UN, 2016). There is growing interest in low cost sanitation solutions which harness natural systems. However, it can be difficult for wastewater utility managers to understand under what conditions such nature-based solutions (NBS) might be applicable and how best to combine traditional infrastructure, for example an activated sludge treatment plant, with an NBS such as treatment wetlands. There is increasing scientific evidence that treatment systems with designs inspired by nature are highly efficient treatment technologies. The cost-effective design and implementation of ecosystems in wastewater treatment is something that exists and has the potential to be further promoted globally as both a sustainable and practical solution. This book serves as a compilation of technical references, case examples and guidance for applying nature-based solutions for treatment of domestic wastewater, and enables a wide variety of stakeholders to understand the design parameters, removal efficiencies, costs, co-benefits for both people and nature and trade-offs for consideration in their local context. Examples through case studies are from across the globe and provide practical insights into the variety of potentially applicable solutions. ISBN: 9781789062250 (Paperback) ISBN: 9781789062267 (eBook)

Infrastructure optimisation via MBR retrofit: a design guide

2009 ◽  
Vol 59 (2) ◽  
pp. 323-330 ◽  
Author(s):  
W. K. Bagg
Keyword(s):  
Wastewater Treatment ◽  
Low Cost ◽  
New Technology ◽  
Treatment Plant ◽  
Design Parameters ◽  
Wastewater Management ◽  
High Quality ◽  
Advantages And Disadvantages ◽  
Treated Effluent ◽  
Quality Water

Wastewater management is continually evolving with the development and implementation of new, more efficient technologies. One of these is the Membrane Bioreactor (MBR). Although a relatively new technology in Australia, MBR wastewater treatment has been widely used elsewhere for over 20 years, with thousands of MBRs now in operation worldwide. Over the past 5 years, MBR technology has been enthusiastically embraced in Australia as a potential treatment upgrade option, and via retrofit typically offers two major benefits: (1) more capacity using mostly existing facilities, and (2) very high quality treated effluent. However, infrastructure optimisation via MBR retrofit is not a simple or low-cost solution and there are many factors which should be carefully evaluated before deciding on this method of plant upgrade. The paper reviews a range of design parameters which should be carefully evaluated when considering an MBR retrofit solution. Several actual and conceptual case studies are considered to demonstrate both advantages and disadvantages. Whilst optimising existing facilities and production of high quality water for reuse are powerful drivers, it is suggested that MBRs are perhaps not always the most sustainable Whole-of-Life solution for a wastewater treatment plant upgrade, especially by way of a retrofit.

scholarly journals An Overview on Major Design Constraints, Impact and Challenges for a Conventional Wastewater Treatment Design

2020 ◽  
Vol 9 (1) ◽  
pp. 7-16
Keyword(s):  
Wastewater Treatment ◽  
Analytical Calculation ◽  
Treatment Plant ◽  
Field Application ◽  
Design Parameters ◽  
Plant Design ◽  
Political Commitment ◽  
Design Constraints ◽  
Technical Requirements ◽  
Set Up

The conventional wastewater (WW) treatment plant includes physical, chemical, and biological treatment processes that can protect the receiving water bodies from water pollution. The common design constraints, challenges as well as environmental impact would make the wastewater treatment plant’s (WWTP) construction and operation more complex and demanding tasks. Major project constraints for WW plant design are economic, accessibility, fulfilling technical requirements, institutional set-up, health and environment, personnel capacity, and political commitment etc. Design methodology adopted in the current study included project location, unit selections, the design capacity, design period as well as proximity to the population and layout plan. The present manuscript discussed briefly about effluent quality requirements, design issues, environmental impacts, details, and safety concerns. It also highlighted the necessary flexibility to carry out satisfactorily within the desired range of influent WW characteristics and flows. In the present study, every step of the design was verified with Environmental Regulations and suggested to overcome all constraints while designing WWTPs so that standard operational code for the specific region could be implemented to achieve the best treatment performance. The results obtained from analytical calculation were optimized to achieve the best design parameters for field application. The optimized values also reduce the construction and operation cost during the field application.

Application of CYYF Whole Process Deodorization in Jizhuangzi Wastewater Treatment Plant

2013 ◽  
Vol 777 ◽  
pp. 192-195
Author(s):  
Lan Wu ◽  
Wen Liang Gao ◽  
Bao Yu Liu
Keyword(s):  
Wastewater Treatment ◽  
Activated Sludge ◽  
Wastewater Treatment Plant ◽  
Low Cost ◽  
Treatment Plant ◽  
Simple Process ◽  
Whole Process ◽  
Geographical Position ◽  
Biological Deodorization ◽  
Living Area

A new biological deodorization technology which is used in Tianjin Jizhuangzi Sewage Plant was introduced in this paper. The geographical position of Jizhuangzi Wastewater Treatment Plant is special. The plant has been surrounded by the living area. The problem of odor to people has been serious until a new deodorization technology is used. It is a source deodorization technology used special filler through vaccination, induction and catalytic to removed the malodorous sources. A special microbial incubator is used to culture and proliferate effective deodorant microorganisms on activated sludge sewage in the biological pool of the plant and then the sludge containing deodorant microbial reflowed to the wastewater inlet. The malodorous substances in the water are removed through adsorption, cohesion, biotransformation degradation and so on by the deodorant microbial. The case indicates that this technology is effective in practice and good for popularization. And this technology with simple process showed significant effect compared with other deodorant technologies and was more secure and convenient to build and run with low cost.

scholarly journals Use of a duckweed pond for the domestic wastewater polishing in Ilha Solteira, SP, Brazil

2017 ◽  
Vol 28 (4) ◽  
pp. 477-489 ◽  
Author(s):  
Daiane Cristina de Oliveira Garcia ◽  
Liliane Lazzari Albertin ◽  
Tsunao Matsumoto
Keyword(s):  
Wastewater Treatment ◽  
Biomass Production ◽  
Treatment Plant ◽  
Oxygen Demand ◽  
Domestic Wastewater ◽  
Treatment System ◽  
Content Type ◽  
Stabilization Pond ◽  
Domestic Effluent ◽  
Duckweed Pond

Purpose The purpose of this paper is to evaluate the efficiency of a duckweed pond in the polishing of a stabilization pond effluent, as well as quantify its biomass production. Once an adequate destination is given to the produced biomass, the wastewater treatment plant can work in a sustainable and integrated way. Design/methodology/approach The duckweed pond consisted of a tank with volume 0.44 m3, operating in continuous flow with an outflow of 0.12 m3/day and hydraulic retention time of 3.8 days. Effluent samples were collected before and after the treatment, with analyzes made: daily-pH, dissolved oxygen and temperature; twice a week – total nitrogen (TN), total phosphorus (TP) and chemical oxygen demand (COD); and weekly – total solids (TS) and Biochemical Oxygen Demand (BOD5). The duckweeds were collected each for seven days for its production quantification. Findings The highest efficiency of TN, TP, COD, BOD5 and TS removal were of 74.67, 66.18, 88.12, 91.14 and 48.9 percent, respectively. The highest biomass production rate was 10.33 g/m2/day in dry mass. Research limitations/implications There was great variation in biomass production, which may be related to the stabilization pond effluent conditions. The evaluation of the effluent composition, which will be treated with duckweeds, is recommended. Practical implications The evaluated treatment system obtained positive results for the reduction in the analyzed variables concentration, being an efficient technology and with operational simplicity for the domestic effluent polishing. Originality/value The motivation of this work was to bring a simple system of treatment and to give value to a domestic wastewater treatment system in a way that, at the same time the effluent polluter level is reduced and it is also possible to produce biomass during the treatment process.

Volatile organic compound emissions during the composting of biosolids from a domestic wastewater treatment plant

2002 ◽  
Vol 46 (10) ◽  
pp. 195-198 ◽  
Author(s):  
C.X. Ramos ◽  
S.L. Estévez ◽  
E. Giraldo
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Solid Phase ◽  
Treatment Plant ◽  
Domestic Wastewater ◽  
Aeration System ◽  
Domestic Wastewater Treatment ◽  
Emission Behavior ◽  
Volatile Organic Compound Emissions ◽  
Aliphatic And Aromatic Hydrocarbons

VOCs emitted by two composting static piles of biosolids coming from the “El Salitre” wastewater treatment plant (Bogotá, Colombia) were analysed during the composting process. Each pile in its sampling time was maintained with a different aeration system. The sampling was made using Solid Phase Microextraction (SPME); separation and identifications were made using Gas Chromatography (GC) coupled to Mass Spectrometry (MS). Aliphatic and aromatic hydrocarbons, chlorinated compounds, ketones, mercaptans, alcohols and amines were identified in concentrations greater than the norms stipulated by the EPA for inhalation in humans beings. The emission behavior varied according to the aeration system used.

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