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Seeking Technologies for Landfill Avoidance and Value Recovery from Non-Incinerable Waste – NEA Request for Proposal

Background / Description

In 2018, around 2,200 tons of waste was sent to the Semakau Landfill (SL) in Singapore daily. This comprises of incineration ash and non-incinerable waste (NIW).  At this rate of landfilling, this only landfill in Singapore is expected to run out of space by 2035.

This RFP is a directed call for R&D proposals on diversion of NIW from SL through utilisation of treated NIW. Proposals to be submitted should strive to achieve a Technology Readiness Level (TRL) 5 or above at the end of the project. Applications of treated NIW should also meet the statutory requirements and guidelines.

Applicants may submit one or more proposal(s) addressing any of the following problem statements and outcomes.

  • Problem statement 1: Freshwater Sludge (FS), Sewage Sludge (SS) and Sewage Sludge Incinerated Ash (SSIA)
  • Problem statement 2: NIW streams from large generators

The applications are to be submitted via the Integrated Grant Management System (IGMS) https://researchgrant.gov.sg/Pages/GrantCallDetail.aspx?AXID=NEACTWL03&CompanyCode=nrf by 30 Jul 2020, 11am.

More information on the RFP can be found at https://www.nea.gov.sg/programmes-grants/grants-and-awards/closing-the-waste-loop-initiative

Technical Specifications

This RFP is a directed call for R&D proposals on diversion of NIW from SL through utilisation of treated NIW. Applications of treated NIW should also meet the statutory requirements and guidelines. Applicants may submit one or more proposal(s) addressing any of the following problem statements and outcomes. 

Problem statement 1: Freshwater Sludge (FS), Sewage Sludge (SS) and Sewage Sludge Incinerated Ash (SSIA)

The Public Utilities Board (PUB), Singapore’s water agency produces around 15,500 tonnes of FS from waterworks per year; and around 30,000 tonnes of SSIA from the incineration of SS from water reclamation plant per year. Currently, PUB disposes both FS and SSIA at SL. In order to reduce and avoid the disposal of FS and SSIA at SL, NEA hopes to achieve the following:

Outcome: To develop solution(s) to process FS, dewatered/dried SS and/or SSIA into material(s) for beneficial application(s), such that freshwater sludge and/or SSIA can be diverted from SL using the developed solution(s).

Problem statement 2: NIW streams from large generators 

Industrial activities generate disparate quantities of NIW but when aggregated, constitute a substantial amount (> 6 t/d) of the NIW disposed of at SL. The table below shows a list of the identified industries generating a substantial amount of NIW.

S/N

Industry

Major NIW stream

1

Semi-conductor

Calcium Fluoride Sludge (from Hydrogen Fluoride wastewater treatment)

2

Refinery

Spent Fluid Catalytic Cracking Catalyst

3

Toxic Industrial Waste Treatment

Metal and Hydroxide Sludge (from toxic industrial wastewater treatment)

NEA invites proposal(s) for the following outcomes:

Outcome A: To develop solution(s) to treat specific industrial waste stream(s) from the major industrial generators listed in Table 1 for beneficial application(s) that could potentially divert the industrial waste from SL.

Outcome B:  To develop solution(s) to treat industrial waste stream(s) from industrial generators not identified in Table 1 for beneficial application(s) that could potentially divert a substantial amount of the industrial waste from SL.

 

 

 

What we are not interested in

NEA is not interested in commercially ready solutions.  In addition, the following types of solution will not be considered:

Problem statement 1: 

  • Merely drying the sludge to remove moisture without treatment(s)
  • Merely applying physical encapsulation and/or incinerating without treatment(s)
  • Making upstream changes to the treatment process that affects PUB plant operation(s)

Problem statement 2:

  • Merely drying the waste to remove moisture without treatment(s)
  • Merely applying physical encapsulation and/or incinerating without treatment(s)

Preferred Business Model

  • R&D Collaboration

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