Thammarat Koottatep

Asian Institute of Technology

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Chongrak Polprasert

Thammasat University

Tatchai Pussayanavin

Ramkhamhaeng University

Chawalit Chaiwong

Asian Institute of Technology

Atitaya Panuvatvanich

Asian Institute of Technology

Peter Emmanuel Cookey

Rivers State University

Nawatch Surinkul

Mahidol University

Yoshiaki Tsuzuki

Shimane University

Saroj Kumar Chapagain

United Nations University

A. Montangero

Swiss Federal Institute of Aquatic Science and Technology

Kim Irvine

Thammasat University

Cooperative Institutions

Asian Institute of Technology

Swiss Federal Institute of Aquatic Science and Technology

University of Technology Sydney

Thammasat University

Chulalongkorn University

Mahidol University

Ho Chi Minh City University of Technology

University of Glasgow

Chinese Academy of Sciences

Ramkhamhaeng University

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Business model analysis for faecal sludge collection and transport services in Thailand and Vietnam

Journal of Water Sanitation and Hygiene for Development (2018)

Ta Hung Anh Thammarat Koottatep Chongrak Polprasert

Abstract In Thailand and Vietnam, faecal sludge (FS) collection and transport services grow spontaneously without adequate business models, causing serious problems to human health and the environment. This study aimed to analyse business problems, business components with financial structure and propose a new conceptual business model. Primary, secondary business data and financial statement reports of 53 service cases were collected and analysed through field surveys, case investigations and questionnaires. The findings revealed the business problems, business components with financial structure of FS collection and transport services. The operation cost structure (7.1 to 13.5 US$/m3) and net profit (−65.8 to 11.1 US$/m3) comparison results suggested that ownership status was related to business performance. A new conceptual business model for FS collection and transport was proposed, comprising infrastructure, service, customer, finance, legislation and ownership. The proposed conceptual business model, qualitatively tested with cases in Finland, Thailand and Vietnam, proved its applicability to improve the FS collection and transport service efficiency in municipalities of low- and middle-income countries.

New business development

10.2166/washdev.2018.026

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Citations (7)

Performance of up-flow thermophilic septic tank treating blackwater

Environment Development and Sustainability (2019)

Thammarat Koottatep Pimchanok Prapasriket Tatchai Pussayanavin Chongrak Polprasert

Blackwater

Septic tank

Hydraulic retention time

10.1007/s10668-019-00362-z

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Citations (9)

Improvement of solar septic tank performance by recovering waste heat from an air conditioner (AC) unit

Desalination and Water Treatment (2020)

Tatchai Pussayanavin Thammarat Koottatep Chongrak Polprasert

One of the valuable alternative approaches to improving overall energy efficiency is to capture and reuse the "lost or waste heat" from an AC unit.A waste heat recovery (WHR) unit could be integrated to a septic tank unit with high energy efficiency.The combination of waste heat energy with the solar septic tank (SST) is considered a novel technique to improve efficiency of the on-site treatment systems.This study aimed to develop an appropriate design of SST integrating WHR and to evaluate energy efficiency and treatment performance.From the overall results, temperatures of the pilot-scale SST integrated with the WHR could increase up to about 45°C.The system performance resulted in the effluent TCOD, BOD 5 and TSS concentrations of 100, 30 and 18 mg/L, respectively.The effluent E. coli and total coliform concentrations were found to be lower than the WHO guideline, which were about 2-3 log.The application of the household scale waste heat recovery unit for the septic tank unit is recommended in this study.

Septic tank

10.5004/dwt.2020.24720

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Citations (4)

Natural Wetlands Treatment of Sewage Discharges from Phnom Penh, Cambodia: Successes and Future Challenges

Asian Journal of Water Environment and Pollution (2010)

Kim Irvine Thammarat Koottatep

10.3233/ajw-2010-7_3_01

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Citations (1)

Performance evaluation of modified Living Wall garden for treating septic tank effluent

Environmental Science and Pollution Research (2024)

Thammarat Koottatep Tatchai Pussayanavin Chongrak Polprasert

Septic tank

10.1007/s11356-024-34547-5

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The challenge of faecal sludge management in urban areas - strategies, regulations and treatment options

Water Science & Technology (2002)

Ana María Ingallinella Graciela Sanguinetti Thammarat Koottatep A. Montangero M. Strauss

In urban centres of industrialising countries, the majority of houses are served by on-site sanitation systems such as septic tanks and unsewered toilets. The faecal sludges (FS) collected from these systems are usually discharged untreated into the urban and peri-urban environment, posing great risks to water resources and to public health. Contrary to wastewater management, the development of strategies to cope with faecal sludges, adapted to the conditions prevailing in developing countries, have long been neglected. The authors describe the current situation and discuss selected issues of FS management. A proposal is made for a rational setting of sludge quality or treatment standards in economically emerging countries. The authors stipulate that regulatory setting should take into account local economic, institutional and technical conditions. Defining suitable treatment options as critical control points in securing adequate sludge quality is better than setting and relying on numerical sludge quality standards. A separate section is devoted to the practice and to regulatory aspects of (faecal) sludge use in Argentina. An overview of treatment options, which may prove sustainable in less industrialized countries is provided. Planted sludge drying beds are one of these options. It has been piloted in Thailand for four years and details on its performance and operation are presented along with data on the hygienic quality of treated biosolids.

Biosolids

Sewage sludge

10.2166/wst.2002.0355

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Citations (100)

Nutrient Removal Technology : ROLE OF PLANT UPTAKE ON NITROGEN REMOVAL IN CONSTRUCTED WETLANDS LOCATED IN THE TROPICS

Thammarat Koottatep Chongrak Polprasert

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ON-SITE TREATMENT SYSTEMS IN THE WASTEWATER TREATMENT PLANTS (WWTPs) SERVICE AREAS IN THAILAND : SCENARIO BASED POLLUTANT LOADS ESTIMATION

Journal of global environment engineering (2009)

Yoshiaki Tsuzuki Thammarat Koottatep Suraphong Wattanachira Yuttachai Sarathai Chira Wongburana

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Citations (10)

Algae-based biomaterials in 3D printing for applications in medical, environmental remediation, and commercial products

Elsevier eBooks (2022)

Hoang Nhat Phong Vo Chawalit Chaiwong Lei Zheng Thi Minh Hong Nguyen Thammarat Koottatep

Biomaterial

Nutraceutical

10.1016/b978-0-323-96142-4.00011-7

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Citations (5)

Toxicity of Chromium on Nitrogen and Biodegradable Compound Removal in Vertical Flow Constructed Wetlands

Engineer Journal of the Institution of Engineers Sri Lanka (2009)

H. A. Basnayaka Thammarat Koottatep

"ENGINEER", established in 1973 by The Institution of Engineers, is a Journal for dissemination of Engineering knowledge, published quarterly.If you are interested in contributing an Original Technical Paper based on research by the author(s) (intended for Section I) or an Original Article of Professional or Technical interest related to Engineering. (Section II) to this journal please go through the publication checklist which can be downloaded from here.Cover DescriptionCover images show a few views of 5000 DWT Misje Vita built by Colombo Dockyard PLC.

Section (typography)

Institution

10.4038/engineer.v42i2.7060

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