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August 5th, 2013:

Filters, particulates and deaths from emissions to air

So Hong Kong’s proposed first (of 3 incinerators) will emit 2 million kilos of emission to air per day, every day. The remaining 1,000 tpd of the thermal conversion will be ash of which 7-10% will be toxic fly ash.

The ash needs landfilling.

But we are told our landfills are full ………………..

http://ukwin.org.uk/resources/health/filters-particulates-and-deaths-from-emissions-to-air/

Filters, particulates and deaths from emissions to air

Some waste incinerator emissions are trapped in filter bags, however the smallest particles (known as ‘PMs’ for ‘particulate matter’) are not. Information from a multi-national waste management company (Veolia) show that “…baghouse filter collection efficiency was 95-99% for PM10s, 65-70% for PM2.5s, and only 5-30% for particles smaller than 2.5 microns, even before the filters become coated with lime and activated carbon [from Howard C.V. The health impacts of incineration, with particular reference to the toxicological effects of ultrafine particulate aerosols, organo-chlorines and other emissions. Proof of Evidence submitted to East Sussex and Brighton and Hove Local Plan Public Inquiry, 2003].

L M Brown and his colleagues have pointed out that “long-term exposure to even low concentrations of fine particles may be associated with reduced life expectancy” [Brown L.M., Collings N., Harrison R.M., Maynard A.D. and Maynard R.L. Ultrafine particles in the atmosphere: introduction. Philosophical Transactions of the Royal Society of London A 358 (2000) 2563-2565].

Airborne particles are classified according to their size. Particles with a diameter of ≤ 10 microns (1 micron (1 µm) = 10-6 metre) are potentially dangerous because they are small enough to be drawn into the lung; such particles are designated PM10s.(CTA = soot)

Particles with a diameter of ≤ 2.5 microns are more dangerous because they can be drawn deeper into the lung; they are designated PM2.5s. Even smaller particles are considered by many to be even more dangerous. The Environmental Protection Agency cites health studies indicating that particles smaller than 2.5 micrometers (PM2.5) are “the major contributor to serious health problems like respiratory illness and premature mortality” [http://www.crwi.org/textfiles/partem.htm].

There is a vast literature concerning the health effects of airborne particulate matter [Pope C.A. and Dockery D.W. Health effects of fine particulate air pollution: lines that connect. Journal of the Air and Waste Management Association 56 (2006) 709-742].

Whatever the technical details, everyone agrees that waste incinerators emit dangerous substances – the debate is around how much is emitted, and how dangerous these emissions are. The fact that research into incinerator emissions is still being conducted demonstrates that the scientific knowledge is far from complete, and that uncertainties remain over safety. A recent study (Aboh, et al. 2007) that looked into a medium sized city in southwestern Sweden, clearly identified their new modern incinerator as the single most significant source of PM2.5’s.

Another recent study (Mao, et al. 2007) found that the concentrations of PM2.5 and PM10 in the study area located downwind of the incinerator were significantly higher (between 220% and 700% higher) than the study area upwind of the incinerator. The study indicated that the air had “significant contamination by air pollutants emitted” from a waste incinerator, representing a public health problem for nearby residents, despite the facility being equipped with a modern air pollution control system.

Many studies, old and new, show that communities all around the world, living close to incinerators, even modern facilities, suffer higher rates of cancer and respiratory problems (e.g. http://tinyurl.com/y7dteo). The recently released Paris Appeal Memorandum, supported by the European Standing Committee of Doctors (representing 2 million doctors), urged a moratorium on building any new incinerators (www.artac.info/static.php?op=MemorandumParisAppeal.txt&npds=1).

It is now established beyond reasonable doubt that particulate air pollution causes death by various means. Research shows these include:

•Cardiovascular morbidity and mortality [Miller K.A., Siscovick D.S., Sheppard L., Shepherd K., Sullivan J.H., Anderson G.L. and Kaufman J.D. Long-term exposure to air pollution and incidence of cardiovascular events in women. New England Journal of Medicine 356 (2007) 447-458]

•Cardiopulmonary mortality [Pope C.A. Mortality effects of longer term exposures to fine particulate air pollution: review of recent epidemiological evidence. Inhalation Toxicology 19 (2007) 33-38]

•Respiratory, immunological, haematological, neurological and reproductive / developmental problems, sometimes with long time-lags between exposure and health effects [Curtis L., Rea W., Smith-Willis P., Fenyves E. and Pan Y. Adverse health effects of outdoor air pollutants. Environment International 32 (2006) 815-830]

•Every 10 µg/m3 increase in fine particulate levels was associated with a 4% increase in deaths from all causes, a 6% increase in deaths from cardiopulmonary illness and an 8% increase in lung cancer mortality [Pope C.A., Burnett R.T., Thun M.J., Calle E.E., Krewski D., Ito K. and Thurston G.D. Lung cancer, cardiopulmonary mortality, and long-term exposure to fine particulate air pollution. Journal of the American Medical Association 287 (2002) 1132-1141]

There is particular concern about the effects of particulate pollution on infants. Increases in infant deaths from respiratory causes with a 10 µg/m3 increase in PM2.5s have been identified [Woodruff T.J., Darrow L.A. and Parker J.D. Air pollution and postneonatal infant mortality in the United States, 1999-2002. Environmental Health Perspectives 116 (2008) 110-115]

•A 10 µg/m3 increase in PM2.5s was related to a 5% increase in the risk for wheezing bronchitis [Pino P., Walter T., Oyarzun M., Villegas R. and Romieu I. Fine particulate matter and wheezing illness in the first year of life. Epidemiology 15 (2004) 702-708]

And sometimes these filter bags tear. The Sunday Herald (Scotland) discovered a major incident on 19 June 2001 which will lead to Dundee Energy Recycling Limited filing a formal report with Scottish Environment Protection Agency (SEPA). “A spokesman for SEPA said that a lot of black dust had poured from the incinerator for an hour after filter bags suddenly burst. The pollution emission dials went off-scale, so there were no readings for the amounts that were discharged. The incinerator was shut down and the operators are trying to find out why the filter bags, which were new, had failed”

[http://www.netpark-ltd.co.uk/bbac/Press-Cuttings-SH.htm].

Health Issues (Template)

The supporters of incineration argue that the health effects of modern incinerators are negligible because they are regulated by the Waste Incineration Directive (WID), and the emission limits (see Annex V of Waste Incineration Directive) are tightly controlled by the Directive. Supporters of incineration in government also claim that the UK’s Royal Society has given incineration a clean bill of health.

The reality is very different. The Royal Society actually has profound reservations, and it should be noted that the WID emission limits only control the rate at which atmospheric pollutants are emitted and not the total volume. Also, many pollutants are not monitored and measured (see Table 1, pages 1256-58).

The medical evidence that atmospheric emissions can and do damage health is considerable and has been documented by the British Society for Ecological Medicine. A key factor is the dust and soot emissions, known as particulate matter (PM). These particles are measured in microns (1 micron = 1 millionth of a metre) and particles become more toxic as their size decreases. For example, particles measuring 2.5 microns or less enter deep into the lung and particles measuring 0.1 micron (known as ultrafine particles) enter readily into the blood vessels of the lung. If these particles have toxic materials attached to them (see Annex V of WID) then the toxicity of the particles is intensified. Particles absorbed into the lung are linked to pulmonary and cardiovascular disease, see article by Montague and BSEM.

The breathing of small and ultrafine particles (2.5 microns and below) has effects upon the health of populations which is revealed by epidemiological studies. Also, ultrafine particles contribute very little to the total mass (weight) of particle emissions from an incinerator, but they seem to contribute disproportionately to its toxicity. Therefore the control of mass (weight) concentrations by filters will have little effect in reducing adverse health impacts unless these filters also capture ultrafine particles, see source.

It has been noted (Howard C. V. The University of Ulster,The health impacts of incineration, with particular reference to the toxicological effects of ultrafine particle aerosols, organo-chlorines and other emissions. Proof of Evidence submitted to East Sussex and Brighton and Hove Local Plan Public Inquiry, 2003) that incinerator emissions trapped in filter bags vary in their efficiency. Howard cites information supplied by Veolia, a multi-national waste management company “. . . baghouse filter collection efficiency was 95-99% for PM10s, 65-70% for PM2.5s, and only 5-30% for particles smaller than 2.5 microns, even before the filters become coated with lime and activated carbon.”

Vyvyan Howard’s Statement of Evidence to the Ringaskiddy incinerator inquiry in Ireland, dated June 2009, explains that the ultrafine particulates from incinerators are particularly dangerous because they carry a range of toxins including dioxins, PCBs and metals (see Prof. Howard’s report).

There is a vast literature concerning the health effects of airborne particulate matter, see example and a recent study, Aboh et al, 2007 has looked a medium sized city in south-western Sweden and identified that their new modern incinerator as the single most significant source of PM2.5s.

It should also be noted that health concerns are accepted as a “material planning consideration”. The Defra website states the following “Public concern is a material planning consideration and has in part led to previous applications [for waste incinerators] being refused (e.g. Kidderminster). Public concern founded upon valid planning reasons can be taken into account when considering a planning application”, see page 25.

Additional Sources of Information:

Montague. P, The Deadliest Air Pollution Isnt Being Regulated or Even Measured, published in Rachel’s Democracy and Health News #915, July 2007, http://www.precaution.org/lib/07/ht070712.htm

Waste Incineration Directive 2000/76/EC, http://www.wbcsd.org/web/projects/cement/tf2/2000-76_en.pdf

Defra’s report titled: Review of the environmental and health impacts of waste management : municipal solid waste and similar wastes , published May 2004, with the Royal Society’s review, Part I, November 2003, and Part II, March 2004, http://www.defra.gov.uk/publications/2011/03/26/health-report-pb9052a/

British Society for Ecological Medicine, The Health Effects of waste incinerators, editors Dr. J. Thompson and Dr. H. M. Anthony, first published December 2005 and revised June 2008, http://www.ecomed.org.uk/pub_waste.php

http://ukwin.org.uk/knowledge-bank/incineration/health-issues-template/

The Cement Kiln Portal

Download PDF : gW only

`Best site’ for sewage works found

http://thestandard.com.hk/news_print.asp?art_id=136182&sid=40071694

A rock cavern in eastern Sha Tin is the “best site” for relocation of the Sha Tin Sewage Treatment Works, the secretary for development said.

Monday, August 05, 2013

A rock cavern in eastern Sha Tin is the “best site” for relocation of the Sha Tin Sewage Treatment Works, the secretary for development said.

Paul Chan Mo-po wrote in his blog that a consultant “confirmed Nui Po Shan of A Kung Kok as the best site compared to four other possible sites for relocation after considering geology, the impacts on the existing sewage system, land ownership, traffic and environmental impacts.”

The government is conducting a consultation on the development of caverns as a way to release more land.

Chan said 72 percent of those surveyed believed that the relocation to a cavern can improve the community environment, especially in eradicating odor and improving its image.

He also said the extra land in Sha Tin after the relocation can be used for building flats and recreational facilities. The treatment works occupies 28 hectares.

“If the relocation is implemented, it is expected to be completed in 2027,” Chan said. “We will conduct detailed land- use planning and carry out technology and impact assessment.”

ASHLEY WU

Viable waste management plan snubbed

dynamco Aug 5th 2013 7:42am

‘Complexity of Airspace’
This is not possible in Hong Kong for political reasons. Five or more competing national interests and four nearby airfields govern our operations. A1, the major air route running along the coast of China, is considered the busiest on the planet. It is a two-way route unlike any busy motorway that separates traffic.’

So having a 3rd HKG runway would only exacerbate A1 & as the writer states, there are competing national interests, whose military control 80% of China’s airspace for military use & Chinese airports in PRD (which operate 24 hours a day unlike HKG) are adding more runways already. In the past 10 years the number of aircraft carrying 150 pax have proliferated from & into HKG versus wide body jets with 300 pax so more aircraft movements are moving less pax per movement.

South China Morning Post

Published on South China Morning Post (http://www.scmp.com)

Home > Letters to the Editor, August 5, 2013



Letters to the Editor, August 5, 2013

Monday, 05 August, 2013, 12:00am

CommentLetters

Viable waste management plan snubbed

The government’s waste management policies and plans, or to be more correct the long-standing deficiency of them, has fired many well-considered letters to these columns. In particular, the Environmental Protection Department’s dogged intention to locate a massive offshore waste incinerator on Shek Kwu Chau has been the source of bitter criticism. These columns have also been addressed several times by an executive director of Green Island Cement (Holdings), offering a time- and cost-effective plan at a more convenient location. The department has never responded to these letters, and thus gives the impression that it does not welcome any private sector initiative in waste management – perhaps it prefers to waste public funds? The only comprehensible reason for the selection of Shek Kwu Chau appears to be that it avoids a hostile reaction from vested landed interests if a more logical site in the New Territories was chosen. Green Island Cement is a wholly-owned subsidiary of Cheung Kong Infrastructure Holdings, and according to the company profile, the group is aggressively seeking business opportunities in environmental development. Those New Territories interests must be powerful indeed if they can cause the government to knock back the interests of Li Ka-shing.

In your editorial (“Rumblings in an empire affect all [1]“, July 25) you muse that perceptions “are rife that the tycoon is not in favour with the government, prompting speculation that politics is at play and a push is on to exit our city”. As if on cue, I read (“CKI eager to enter new industries as profit grows [2]“, July 26) where Cheung Kong Infrastructure has made two major overseas acquisitions – a waste management firm in New Zealand, and a stake in the largest producer of electricity by burning waste in the Netherlands. While I generally think that Li Ka-shing’s footprint has grown too large for the public good in Hong Kong’s confined economy, I believe that in the waste management sector we urgently need all the help we can get. It is a sad day for the city if our most successful businessman is investing in waste management overseas because the government is stymieing private enterprise here in Hong Kong.

Frank Lee, Mid-Levels

Overlooking complexity of airspace

Due to the geographic location of Chek Lap Kok airport, the justification for the third runway is undoubtedly a complex exercise.

Keith Moran’s assertion that the key element to efficiency is air-traffic control comes from a common lack of understanding (“Air-traffic controllers the key element [3]“, July 27). A superficial comparison with Heathrow does nothing but harm the reputation and dedication of Hong Kong’s air-traffic controllers.

It overlooks the complexity of airspace, impact of terrain, lack of centralised flow control, single departure tracks, inability to turn traffic operating from the southern runway and the impact of weather through our two extremely narrow arrival corridors.

New York is similar in complexity to Hong Kong with the close proximity of busy airports. However, by being controlled and regulated by a single authority, the entire airspace model and operations are designed to optimise and integrate aircraft movements.

This is not possible in Hong Kong for political reasons. Five or more competing national interests and four nearby airfields govern our operations. A1, the major air route running along the coast of China, is considered the busiest on the planet. It is a two-way route unlike any busy motorway that separates traffic. The complexity faced on a daily basis by our controllers managing departing and arriving traffic into and crossing this route needs to be factored into the overall performance of Chek Lap Kok.

Mr Moran’s solution was for controller training in Britain. Over the past 15 years, a large body of expats, many from the UK and US, have been primary training officers. Those methods and techniques are incorporated into our syllabus.

As a consequence of the rapid growth in air movements, the Civil Aviation Department and the Hong Kong Air Traffic Control Association have been active over the last two years with an educational programme for local airlines, providing aircrew visits and briefings.

I encourage Mr Moran and other aircrew to contact either body to obtain the facts rather than comment publicly and cloud the third runway debate. Communication and understanding between aircrew and air-traffic controllers is vital to safe operations.

Mike O’Neill, president, Hong Kong Air Traffic Control Association



Source URL (retrieved on Aug 5th 2013, 7:43am): http://www.scmp.com/comment/letters/article/1294371/letters-editor-august-5-2013