WA freeway to use C&D waste as road base

Recycled construction and demolition (C&D) waste will be trialled as road base for use on the Kwinana Freeway widening project, WA.

The project is the first major road in WA that will use recycled materials as road base to boost the state’s recycling performance.

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The trial will take place between Russell Road and Roe Highway and will use about 25,000 tonnes of recycled C&D product.

Main Roads WA will work with the Waste Authority and the Department of Water and Environment Regulation (DWER) for the trial.

A new product testing scheme will aim to help C&D recyclers with the costs associated with meeting the appropriate specifications are free of contaminants and asbestos. An independent audit testing scheme aims to provide additional support.

The pilot aims to improve confidence in using recycled C&D products and supporting the state’s waste diversion target. Its findings will be used to establish the WA Government’s Road to Reuse program.

WA Environment Minister Stephen Dawson said the demonstration project is the beginning of a new practice for the government.

“It will demonstrate to local governments and industry that recycled content is usable and value for money, redressing the concerns from many years ago that effectively stopped any reuse of valuable construction and demolition materials,” Mr Dawson says.

“This partnership between DWER, the Waste Authority and Main Roads is a huge step forward for the reduction of construction and demolition waste in Western Australia.

“By using recycled construction and demolition products in projects across the state, we can help meet our landfill diversion targets and focus on recycling materials.”

WA Transport Minister Rita Saffioti said the interagency partnership is key to ensuring the ongoing use of recycled material in WA.

“Roads to Reuse establishes a strict testing regime to reduce the risk of contaminants to below allowable limits – protecting people and the environment,” she said.

Canberra’s sustainability strategy tackles waste

A new sustainability strategy for Canberra has been released that set targets for waste reduction, increased recycling and reductions in greenhouse gas emissions.

It is part of Canberra’s City Renewal Authority’s goal to become a world class sustainable capital city as part of its built environment and design.

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Targets identified in the strategy for 2025 include waste and recycling management plans aim to target 95 per cent of construction resource recovery and increasing the onsite capture and reuse of organics, recyclables and bulky waste by 20 per cent over the 2015 level.

To hit these targets, the strategy plans to deliver exemplars of waste resource recovery in construction and operation phases of Canberran projects.

The City Renewal Authority’s sustainability program uses sustainability policies from across the ACT Government to form the strategy for the City Renewal Precinct.

City Renewal Authority CEO Malcolm Snow said Canberrans have a high expectation that their city be environmentally, socially and economically sustainable.

“We want a city that will still support future generations, so we need to create a city now where sustainable living is a part of everyday life. This responds to the community’s expectation for government leadership on sustainable development and access to green space,” Mr Snow said.

“Social and environmental sustainability are vital elements of our program as we implement the design-led and people-focused renewal of our city precinct.

“We will make Canberra an even more liveable city by reducing its environmental footprint and setting a high standard of social sustainability,” he said.

Mr Snow said the Authority has set these targets to influence outcomes across the precinct as new development proposals are submitted.

“Achieving these outcomes will require collective urban leadership from government, the community and the private sector. It is in all our interests that the city grows in a way that improves the lives of current and future generations,” he said.

“We can’t do this alone and we look forward to working with all stakeholders to help make the City Renewal Precinct an even better place for people to work, live and visit.”

NSW Govt cracks down on asbestos waste

The NSW Government has released a draft of its Asbestos Waste Strategy, which aims to make it tougher to illegally dump asbestos and safer to remove it.

The NSW Government has initiated a crackdown on asbestos waste, introducing stronger measures to protect the community and environment from rogue construction and demolition waste operators.

A reform package has been announced and will increase on the spot fines for illegally transporting or disposing of asbestos waste by tenfold.

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Construction and demolition waste facilities will also face tougher inspections and handling rules, along with new fines for illegally digging up landfills.

Under the changes, construction and demolition waste facilities will have tighter inspection controls and constant video monitoring. Facilities must also comply with stringent waste storage rules and provide evidence that staff are properly trained.

Incentives are also available for those doing the right thing, with a 75 per cent levy discount for some types of construction and demolition waste that meets specification to be applied as cover material.

The changes were introduced in the Protection of the Environment Operations Legislation Amendment (Waste) Regulation 2018, which will come into effect in May 2019 to allow the industry time to adjust.

NSW Environment Minister Gabrielle Upton said it is a top priority that stronger penalties act as a deterrent and that waste facility operators improve the way they manage construction and demolition waste.

“By giving the NSW Environment Protection Authority (EPA) stronger penalties, it can more effectively hold the waste industry to account as well as encouraging good behaviour.

“On the spot fines for illegal asbestos transport and disposal have increased from $750 for an individual and $1,500 for a corporation to $7,500 and $15,000.

Ms Upton said the reforms follow comprehensive consultation with local councils, waste facility operators, industry bodies and the community.

“Poor practices were identified particularly at a number of facilities handling construction waste. That is why there are now tougher standards and procedures to safeguard the environment and community.”

“There is also a new, $15,000 on-the-spot fine and penalties of up to $44,000 for illegally digging up old landfills. From now on, landfills can only be dug up in cases of emergency or with specific permission of the EPA,” she said.

SUEZ propose six-year expansion to Sydney landfill

SUEZ has proposed to expand its Elizabeth Drive Landfill at Kemps Creek in Sydney.

The expansion would increase the current height of the landfill by up to 15 metres which could increase by around 5 million cubic metres. No changes to the existing cell design, cap design or waste disposal methods are involved in the project plan.

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Proposed changes to the capacity of the landfill are estimated to extend the life of the landfill by approximately six years to 2030.

The proposal comes in response to an anticipated increase in waste generation from Sydney’s growing population and several large infrastructure projects in the areas.

Elizabeth Drive Landfill is one of the only sites in the Sydney Basin that is able to receive general construction and demolition waste, according to SUEZ.

SUEZ is currently preparing an Environmental Impact Statement (EIS) for the approval that will assess the likely impacts of the construction and operation of the project.

It will focus on topics including waste management, air quality, hazards and risks, noise and vibration, soil and water, traffic and transport, biodiversity, fire and incident management, visual amenity and heritage.

The EIS is expected to be put on public display for comment in late 2018 or early 2019 by the Department of Planning and Environment.

Approval from the Sydney Western City Planning Panel is required following this step before SUEZ can proceed with construction.

Project approval is expected to be decided by mid 2019 with construction aimed to begin in late 2019.

From NDD to resource with Repurpose It

Dealing with large-scale infrastructure projects in Melbourne has led to a need to minimise disruption by using non-destructive digging, but this approach is prompting new and innovative solutions to clean up the resulting waste.

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City of Ballarat signs waste to energy agreement with MRCB

A due diligence study can now be undertaken for the construction of a $300 million municipal waste to energy plant in the Ballarat West Employment Zone.

It comes as a result of the City of Ballarat signing a Waste to Energy Heads of Agreement with the Malaysian Resources Corporation Berhad (MRCB).

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The City of Ballarat has been planning for a waste to energy facility for five years, which would divert 60 per cent of the city’s waste into an energy source for industries and reduce the current regional landfill’s environmental impacts.

Currently, 30,000 tonnes of waste are deposited in the landfill each year, with waste disposal costing more than $18 million per year.

It is estimated that the plant would increase the size of Ballarat’s economy by $202 million through building and flow on effects, with about 420 jobs created during construction and 120 ongoing jobs.

MRCB’s technology partner, Babcock and Wilcox Volund, built its first waste to energy plant in 1931 and has gone on to build more in the United States, China, Sweden, Ireland, Denmark, Malaysia and Korea.

City of Ballarat Mayor Cr Samantha McIntosh said the Western region was already a leader in renewable energy production, particularly wind energy, but this announcement would further enhance its standing.

“Signing this Heads of Agreement means we are one significant step closer to a Waste to Energy plant in Ballarat that would be a regional solution to our waste reduction issues while providing an affordable and reliable energy source,” Cr McIntosh said.

“It would also be a driving force in attracting industries and employment to BWEZ by delivering a uniquely competitive advantage.”

“We will also maintain our commitment to minimising waste through continual education about re-use and recycling.”

MRCB’s Group Managing Director Imran Salim arrived from Kuala Lumpur to witness the Heads of Agreement signing by Ravi Krishnan, CEO of MRCB International.

“MRCB is delighted to be in Ballarat and looks forward to working closely with the City of Ballarat and the wider community on providing a world class facility,” Mr Salim said.

Lake Macquarie City Council push to swap sand with recycled glass

Recycled crushed glass will substitute sand in civil works projects as Lake Macquarie City Council pushes for local solutions to national issues.

The project aims to reuse thousands of tonnes of glass every year, with the potential to reuse 12,000 tonnes collected from across the Hunter region if other councils get involved.

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A plant built on the Central Coast is manufacturing the glass sand for the council’s trial.

The sand has similar applications to normal sand and can be used as a bedding material in drainage projects and other civil works.

Lake Macquarie Mayor Kay Fraser said glass bottles, jars and other items collected from household recycling bins would be sorted and processed as usual at a materials recovery facility at Gateshead.

“There is a growing need across Australia to find an end use for recycled glass,” Cr Fraser said.

With companies finding it cheaper to import new glass than buy recycled, we need to start coming up with innovative, cost-effective alternatives.

“This collaborative project could help solve a national crisis in our own backyard,” she said.

Manager Planning and Sustainability Alice Howe said more than 5000 tonnes of glass were collected for recycling annually across Lake Macquarie.

“Our strategy is twofold: we are demonstrating the suitability of recycled glass sand for our own civil works program, and have amended our engineering guidelines to specify how this material can be used in development across the city ,” Dr Howe said.

“We aim to gradually increase the amount of recycled glass that is processed into glass sand and used in our own operations. If the rest of the region follows our lead, this initiative could close the loop on thousands of tonnes of glass each year.”

Dr Howe said if the end-use issues for recycled glass aren’t addressed soon, the stockpiles of material will continue to grow.

Albury City receive close to $2.5M for recycling boost

Albury City’s Waste Management Centre will receive almost $2.5 million from the NSW Government to boost the city’s recycling capabilities.

A $2 million grant will enable the council to build a construction and demolition recycling plant at the Albury Waste Management Centre to recycle waste that would have ended up in landfill.

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An additional $445,840 will go towards funding new pallet shredding and de-nailing technology for the recycling plant.

The machinery is expected to be able to recover more than 5100 tonnes of timber from discarded pallets every year, which will then be potentially used as an industrial fuel or for projects requiring a wood product.

The funding package will also help pay for the development of a local recovery centre to recover steel and textiles from an estimated 3200 mattresses a year.

Albury City Mayor Kevin Mack said the new construction and demolition recycling centre would be an important boost to the community’s efforts to halve the amount of waste sent to landfill.

“As a community, we’re leading the way in recycling and reuse of goods at the Waste Management Centre and this new facility means we can find new uses for thousands of tonnes of commercial waste such as masonry, timber and metals,” he said.

“It will not only provide a social and environmental benefit, it will also turn rubbish into valuable products that can be used for new construction projects, such as road building.”

The council expect to reach its target of halving the amount of waste sent to landfill by 2020 with the help of the new facilities and the community.

Deakin project uses plastic dialysis waste to produce durable concrete

Dialysis patients could inadvertently improve sustainability in the construction industry, thanks to an innovative Deakin University recycling project that’s turning hospital waste into longer-lasting concrete.

A team at Deakin’s School of Engineering is behind the new project, which could ultimately save from the scrap heap the thousands of tonnes of plastic waste created in Australia each year through dialysis treatment.

Project leader Dr Riyadh Al-Ameri, a senior lecturer in structural engineering, said the project could solve two problems in one, with corrosion of steel bars used in concrete construction a major issue for the industry.

The project is a collaboration between Dr Al-Ameri and nephrologists Dr Katherine Barraclough from the Royal Melbourne Hospital and Professor John Agar from Barwon Health’s University Hospital Geelong, and came about when the specialists approached Deakin to find a practical solution to their waste issue.

Dr Al-Ameri said his project team was hoping to use the shredded plastic waste to help better protect structural concrete from corrosion.

“Concrete can crack and damage the internal bond, which can then lead to water penetration and corrosion of the steel bars, critical for providing the strength and integrity of concrete structures.

“If we are able to facilitate production of new types of concrete that will offer better protection, give structures longer life and better performance, as well as help recycle plastic waste, that will be a great achievement.”

Dr Barraclough said each dialysis treatment created between one and three kilograms of plastic waste, and with more than 12,000 Australians on dialysis, that added up to about 5,100 tonnes of plastic waste per year.

“Haemodialysis (the most common type of dialysis) involves making a circuit where blood is pumped from a patient’s bloodstream through a machine then back to the patient. This removes toxins and excess water and is life sustaining for patients with kidney failure,” she said.

“For safety reasons, both the tubes that carry the blood and the dialyser (the part of the machine that cleans the blood) are made of plastic designed for single use only. The result is large amounts of plastic waste generated from each dialysis treatment.

“Because the waste is potentially infectious, it must be either burnt or sterilised before being thrown away. This not only costs a lot of money, but also causes significant harm to the environment.”

As part of some initial testing, Dr Al-Ameri’s team added the shredded plastic waste to a concrete mix at concentrations of 0.5 per cent and 1 per cent by weight of concrete, with results showing this made a product that was more durable and significantly more water-proof.

Going forward, Dr Al-Ameri and his team hope to conduct more rigorous testing to see if this new concrete mix can stand up to harsh conditions.

“We will use our accelerated weather corrosion tanks in the concrete lab to simulate a marine environment,” Dr Al-Ameri said.

“One month in the lab is equivalent to approximately one year outside, so we can observe the behaviour of the material quickly and efficiently.

“Wet and dry cycles can have a big impact on the durability of the concrete, and sea water has chloride, which is very harmful to both concrete and steel reinforcement.

“So we’re looking for innovations that will help concrete construction of off shore rigs for oil and gas, observation towers, concrete buildings in coastal areas that are exposed to humidity, and marine structures such as retaining walls that are in contact with water.”

Pictured: Deakin University School of Engineering PhD candidate Aifang Wei and project leader Dr Riyadh Al-Ameri.

Photo credit: Donna Squire