{"id":3883,"date":"2025-03-06T14:15:22","date_gmt":"2025-03-06T05:15:22","guid":{"rendered":"https:\/\/setsubikyo.or.jp\/?page_id=3883"},"modified":"2025-03-26T15:28:50","modified_gmt":"2025-03-26T06:28:50","slug":"tech-info","status":"publish","type":"page","link":"https:\/\/setsubikyo.or.jp\/en\/tech-info\/","title":{"rendered":"Technical Documents"},"content":{"rendered":"

As part of our activities, we compile the technical expertise of our member companies to create various technical documents on sewage facilities.<\/p>\n\n\n\n\n\t\n\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t
Title<\/center><\/th>
Content<\/center><\/th>
Publication Date<\/center><\/th>\n<\/tr>\n<\/thead>\n
New Trends in Sewerage Facilities (JP)<\/a><\/td>21 Jun 2014<\/td>\n<\/tr>\n
<\/td>Preface<\/a>
\nChapter 1: Grit Chamber Equipment<\/a>
\nChapter 2: Pumping Equipment<\/a>
\nChapter 3: Water Treatment Equipment<\/a>
\nChapter 4: Blower Equipment<\/a>
\nChapter 5: Sludge Thickening Equipment<\/a>
\nChapter 6: Sludge Dewatering Equipment<\/a>
\nChapter 7: Sludge Incineration Equipment<\/a>
\nChapter 8: Power Receiving & Emergency Power Generation Equipment<\/a>
\nChapter 9: Monitoring & Control Equipment<\/a>
\nChapter 10: Instrumentation Equipment<\/a>
\nChapter 11: Resource Recovery Equipment<\/a><\/td>\n<\/tr>\n
<\/td><\/td><\/td>\n<\/tr>\n
Trends in Sewerage Facilities (JP)<\/a><\/td>16 Feb 2004<\/td>\n<\/tr>\n
<\/td>Chapter 1: Grit Chamber Equipment<\/a>
\nChapter 2: Pumping Equipment<\/a>
\nChapter 3: Water Treatment Equipment<\/a>
\nChapter 4: Advanced Treatment Equipment<\/a>
\nChapter 5: Sludge Treatment Equipment<\/a>
\nChapter 6: Resource Recovery Equipment<\/a>
\nChapter 7: Deodorisation Equipment<\/a>
\nChapter 8: Power Receiving & Emergency Power Generation Equipment<\/a>
\nChapter 9: Monitoring & Control Equipment<\/a>
\nChapter 10: Instrumentation Equipment<\/a>
\nAppendices<\/a><\/td>\n<\/tr>\n
<\/td><\/td><\/td>\n<\/tr>\n
Design and Estimation for Reconstruction Works (Improvement Proposal & Design Changes) (JP)<\/a><\/td>26 Mar 2009<\/td>\n<\/tr>\n
<\/td>To address issues in sewage facility reconstruction works, our association established the Committee on Equipment Design & Estimation. The committee analysed current challenges and proposed improvements, focusing on projects that have become a major part of Tokyo\u2019s public works.
\n
\nThis report highlights \"Design Changes\" as a key issue, aiming to enhance contract transparency and enable practical, immediate improvements. The recommendations provide concrete measures to align project design and estimation methods with actual site conditions, which often differ from initial plans.
\n
\nBy adopting these recommendations, we aim to facilitate efficient project execution, support manufacturers in maintaining high technical standards, and contribute to the construction of reliable and safe sewage infrastructure.<\/td>\n<\/tr>\n
<\/td><\/td><\/td>\n<\/tr>\n
Proposal for Distribution Board Optimisation (JP)<\/a><\/td>19 Mar 2007<\/td>\n<\/tr>\n
<\/td>As financial constraints increase in the sewage sector, cost reductions in construction and maintenance are necessary. However, sewage facilities play a vital role in daily life and must function reliably at all times.
\n
\nCurrently, strict standard specifications and control manuals govern distribution board structures and system configurations. While these standards ensure functionality, they also limit the adoption of innovative, cost-effective technologies.
\n
\nThis proposal focuses on the optimisation of distribution boards and system configurations, introducing equipment that offers both functional and qualitative benefits.<\/td>\n<\/tr>\n
<\/td><\/td><\/td>\n<\/tr>\n
Measures Against Momentary Power Interruptions for Critical Loads (JP)<\/a><\/td>19 Mar 2007<\/td>\n<\/tr>\n
<\/td>Momentary voltage drops refer to short-duration voltage reductions caused mainly by natural phenomena such as lightning. These events are unavoidable and can affect the operation of essential sewage facilities, potentially leading to stormwater pump failures and other serious disruptions.
\n
\nThis report examines the impact of momentary voltage drops on plant equipment, outlines countermeasures to ensure continuous operation, and provides key considerations for system stability.<\/td>\n<\/tr>\n
<\/td><\/td><\/td>\n<\/tr>\n
Design and Construction Considering LCC (JP)<\/a>
\nDesign and Construction Considering LCC (Reference Materials) (JP)<\/a><\/td>		15 Sep 2006<\/td>\n<\/tr>\n
<\/td>Sewage facilities must operate reliably, but many components in Tokyo\u2019s sewerage system have already reached their legal service life. As a result, reconstruction projects are now a major focus.
\n
\nSince sewage equipment undergoes different failure phases\u2014early failure, random failure, and wear-out failure\u2014proper maintenance and timely reconstruction are essential. Given budget constraints, applying Life Cycle Cost (LCC) analysis ensures that renewal decisions are made objectively and cost-effectively.
\n
\nThis report serves as the second phase of our earlier LCC Study on Sewerage Facilities, incorporating findings from specialised committees on LCC-based design, construction, and facility longevity.<\/td>\n<\/tr>\n
<\/td><\/td><\/td>\n<\/tr>\n
LCC Study on Sewerage Facilities (JP)<\/a><\/td>18 Apr 2004<\/td>\n<\/tr>\n
<\/td>Proper maintenance and reconstruction are essential to preserve urban sewage infrastructure and sustain its function and capacity. Beyond physical and functional deterioration, economic assessments play a crucial role in renewal decisions.
\n
\nLCC analysis has gained attention as a key evaluation method. In response, our association launched the LCC Study Committee in September 2001. This committee researched:
\n

    \n
  • LCC calculation methods for practical application<\/li>
    \n
  • Strategies for reducing LCC<\/li>
    \n
  • Degradation diagnostics for mechanical & electrical equipment<\/li>
    \n<\/ul>
    \nThis report summarises the findings and recommendations.<\/td>\n<\/tr>\n
<\/td><\/td><\/td>\n<\/tr>\n
Study on Extending the Service Life of Sewerage Facilities (JP)<\/a><\/td>15 Sep 2006<\/td>\n<\/tr>\n
<\/td>Since Tokyo\u2019s sewerage system reached 100% coverage in 1994, the focus has shifted towards qualitative improvements, including combined sewer upgrades, advanced treatment, and resource recovery. However, the primary priority is maintaining existing facilities through renewal projects.
\n
\nTo ensure efficient budget allocation, we evaluated service life extension measures for various equipment types. Implementing these strategies requires accurate cost estimation and economic feasibility assessments for each asset.
\n<\/td>\n<\/tr>\n
<\/td><\/td><\/td>\n<\/tr>\n
Handling of Low-Concentration PCB (JP)<\/a><\/td>20 Mar 2006<\/td>\n<\/tr>\n
<\/td>The manufacture and use of PCB-containing insulating oil was banned in 1972 under a Ministry of International Trade and Industry directive. However, recycled insulating oil from before 1972 often contained residual PCB. Transformers manufactured before 1989 may still contain trace amounts of PCB, posing potential environmental risks.
\n
\nBusinesses disposing of PCB-contaminated equipment (e.g., transformers and capacitors) must verify PCB content before handing them over to waste disposal companies. Even if a unit is declared PCB-free, it is recommended that concentration tests be conducted as a precaution.
\n
\nThis report provides:
\n

    \n
  • PCB analysis methods & evaluation criteria<\/li>
    \n
  • Estimated costs & processing time for analysis<\/li>
    \n
  • Guidelines for proper storage and disposal<\/li><\/td>\n<\/tr>\n
<\/td><\/td><\/td>\n<\/tr>\n
Challenges and Countermeasures for Quality Measurement Instruments (JP)<\/a><\/td>20 Oct 2005<\/td>\n<\/tr>\n
<\/td>Sewage treatment plants rely on quantitative instruments (e.g., water level & pressure gauges) and qualitative instruments (e.g., DO meters & concentration analyzers) for monitoring and process control. Accurate measurements are critical for optimising plant operations and automated control systems.
\n
\nHowever, qualitative measurement instruments face unique challenges:
\n
\n
  • Shorter development history than quantitative instruments<\/li>
    \n
  • Complex calibration procedures<\/li>
    \n
  • Exposure to corrosive gases in sewer environments<\/li><\/ul>
    \nAs automation, energy efficiency, and CO\u2082 reduction become priorities, qualitative instruments play an increasingly vital role. However, accuracy issues and maintenance difficulties remain a concern.
    \n
    \nWith support from the Tokyo Metropolitan Sewerage Bureau, our association conducted field surveys at five water reclamation centres, identified existing challenges, and formulated countermeasures and future improvement strategies.<\/td>\n<\/tr>\n
<\/td><\/td><\/td>\n<\/tr>\n
Effective Construction Methods for Facility Reconstruction Works (JP)<\/a><\/td>06 Dec 2004<\/td>\n<\/tr>\n
<\/td>Recognising the importance of facility reconstruction projects, our association has collaborated with the Tokyo Metropolitan Sewerage Bureau to propose effective construction methods.
\n
\nThis report presents valuable knowledge and best practices gained from past projects, focusing on:
\n
\n
  • Grit chamber equipment<\/li>
    \n
  • Pumping equipment<\/li>
    \n
  • Sludge treatment & incineration equipment<\/li>
    \n
  • Electrical equipment<\/li><\/ul><\/td>\n<\/tr>\n
<\/td><\/td><\/td>\n<\/tr>\n
Study on Global Warming Countermeasures for Sewerage Facilities (JP)<\/a><\/td>13 May 2004<\/td>\n<\/tr>\n
<\/td>Combating global warming is essential for sustainable socio-economic development and requires coordinated public-private efforts at both global and local levels.
\r\n
\r\nSewerage systems are a significant source of greenhouse gas emissions within public infrastructure. In response to a request from the Tokyo Metropolitan Sewerage Bureau, our association established the Sewerage Equipment Global Warming Prevention Study Committee, focusing on equipment-related countermeasures.
\r\n
\r\nThis report presents an overview of the committee\u2019s findings.<\/td>\n<\/tr>\n
<\/td><\/td><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n","protected":false},"excerpt":{"rendered":"

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