Septic Tank Inspections Start in Six Months Time

Inspections of septic tanks and small household systems will commence in February 2013. The performance standards, essentially that they do not cause a risk to human health or the environment, are explained in the Water Services Acts 2007 and 2012 (Domestic Waste Water Treatment Systems) Regulations 2012. (Link). For the first time regulations have been set for the operation and maintenance of systems including frequency of de-sludging.

There will be some complex issues arising, one will be odours. The problem is that if the tank is properly vented then odours will be released either at the tank level or at the sewer vent at the roof top…so odour generation becomes a complex issue of wind direction, speed and temperature. The crust formation on the tank does reduce odours but with more frequent desludging and less scum developing due to greater detergent use and less use of heavy fats and oils…then crust formation is slower to form and less developed leading to odour release. To quote from the department of the Environment webpage: ‘There is no question of imposing modern standards, for example those set out in the EPA’s 2009 Code of Practice, to older systems. Nor is there any question of householders having to acquire additional land to facilitate remediation work. Where an on-site system fails an inspection, the remediation work required will be based on factors such as the nature of the problem, the extent of risk to public health or the environment, existing site size and the hydrological and geological conditions present’.

Septic Tank Registration Underway

At last it appears that hosueholders are now able to regitsre their septic tanks and household treatment systems which is a requirement under the The Water Services (Amendment) Act 2012. As we are repeatedly told that this is being done to address the European Court of Justice ruling against Ireland in October 2009. Of course it is also a sensible provision to protect public health and the environment.
Registration is covered by Domestic Waste Water Treatment Systems (Registration) Regulations 2012 and can be done online via the Protect Our Water website.  Alternatively applications can be made by post using forms available from public libraries and local authorities.

As an incentive the normal registration fee of €50 will be set at €5 until 28 September 2012. Registration must be completed on or before 1 February 2013. There will be no separate inspection charge.

PAlaeontological STatistics - Update

Many of you will know how much I like the statistical package PAST (PAlaeontological STatistics ) devised by Øyvind Hammer at the Natural History Museum of the University of Oslo. This is a free software package that can be downloaded from the Internet and Øyvind is remarkable in that the package is continuously updated and refined. The latest version (2.16) can be downloaded at http://folk.uio.no/ohammer/past
Among the latest additions are: Box-Cox transformation with max likelihood estimation of lambda; Anderson-Darling normality test; Nearest neighbor point analysis: Plotting of distance histogram vs. expected distribution; Hangle (outline shape analysis) now includes 'Htree' fitting; Coefficient of variation: Now with bootstrapped confidence intervals; Similarity indices: Added Mixed (as available in other modules); Rarefaction: Labels added for multiple-sample plot; User controllable range of color maps, new color maps; User controllable number of lines in spline deformation grids; Bubble plot: Option for 95% confidence ellipses; Rarefaction: Option to not show standard deviations; Improvement on number of decimals in graph axes.

Today is Earth Day- April 22nd

Since the launch of the first Earth Day in the US on April 22nd 1970, tens of millions of people have taken part in global based activities…raising environmental awareness. Last year in excess of 1 billion people participated in Earth Day activities making it the largest civic observance in the world. Link

Irish Water will become a subsidiary of Bord Gáis

The Government announced today that the new State water authority Irish Water will become a subsidiary of Bord Gáis (The State owned Irish Gas Company). The formation of a new State Water Authority is to be welcomed as it will for the first time facilitate the provision of water, sewerage and wastewater to be operated holistically. It may also allow Irish Consumers, for the first time, to have the same rights as water consumers in other countries and a proper route for the handling of complaints about water quality, something that is currently lacking in Ireland. On the whole the County Councils and Local Authorities have done an amazing job over the years and to some extent it is sad to see this come to an end. However, the senior management in County Councils didn’t rise to the challenge and have now lost one of their key roles.

In some areas local authorities have failed to react to the real needs of consumers and the poor provision in some areas, often linked with poor planning decisions, has left us with complex supply and sewage treatment problems. However, hidden away in water and wastewater treatment plants around the country we have a wealth of fantastic technical and operational personnel with extensive expertise, which I hope will now be allowed to play a more central role in the operation and management of our water services.

We must be very careful to remember that in all the hype about charges there are real public health issues at the core of this change as well as the environmental issues. Personally I would have preferred to have seen a standalone Water Authority similar to those in the UK prior to privatization based on regional areas where staff, equipment and expertise could be shared. Ireland is small enough to have based these on our existing River Basin Districts and to have had the catchment management functions associated with River Basin Management Plans also come under their auspices. Apart from knowing how to collect revenue and lay pipes, I am at a loss to know what Bord Gáis can bring to this critically important and technically very different industry.

The water industry represents a massive and continuous investment by the tax payer for over a century and it should not be allowed to be asset stripped by the private sector, although it is unlikely that with its small size, dispersed population and the complex arrangement with Group Water Schemes that it will prove to be an attractive investment for some time to come. I wish Water Ireland well, but hope that it creates a sustainable water infrastructure for the future and prosperity of Ireland.

Confusion Reigns Over Septic Tank Registration

County Councils throughout Ireland have been inundated with enquiries relating to how to register their home wastewater treatment systems. The best they have been able to do is to redirect enquiries to the Department of the Environment, Community and Local Government. The situation has become quite confused and much of the good will that was out there appears to be evaporating very quickly. The Government needs to clearly set out a proper timescale and mechanism for registration so that those who have septic tank and home treatment systems know what to do.  

The environ.ie website has some good advice to householders, which will form part of the new standards, that will help them prepare for inspections that are due to begin in 2013:

• Know where your tank is located;
• Visually examine your tank every year;
• Ensure only domestic waste water is treated in your tank;
• Ensure your tank only discharges from those points for which it was designed to discharge from;
• Ensure the effluent is not discharged to or does not rise to the surface of the ground;
• Ensure your tank is not discharging into streams/ditches;
• Desludge your tank when necessary, using an authorised waste collector;
• Ensure that your tank is not polluting and operation and maintenance is in compliance with the manufacturer’s manual, as appropriate.

More information at link.

RESEARCH STUDENTSHIP (TEAGASC WALSH FELLOWSHIP)

A research studentship is available working with Dr Catherin Coxon of the School of Natural Sciences at Trinity College Dublin. The studentship (known as a Walsh Fellowship) is tenable at Trinity College Dublin in association with Teagasc, Johnstown Castle (Wexford, Ireland)

NITROGEN ATTENUATION ALONG DELIVERY PATHWAYS IN AGRICULTURAL CATCHMENTS

This project aims to investigate nitrogen transfer and attenuation within intensively managed agricultural river catchments, so that current mitigation strategies and response times can be evaluated. The project will involve fieldwork at several sites in southern Ireland and laboratory analytical work at Teagasc Johnstown Castle and is carried out within the frame work of the Agricultural Catchments Programme. The objectives include exploration of temporal groundwater fluxes within the landscape, determination of nitrogen transfer via groundwater to streams, investigation of N attenuation in the hyporheic zone and quantification of a nitrogen balance including nitrous oxide emissions.

Applicants should have a good primary degree (II1 or I) or a M.Sc. in an appropriate discipline (Environmental Science, Earth Science, Agricultural Science, Hydrology / Hydrogeology etc.). A full driving licence is also required.  The position is funded by a Teagasc Walsh Fellowship; value €21,000 per annum, to cover postgraduate stipend and tuition fees. (Note: tuition fees for European Union residents are currently €6,085 per annum). The project will start in September 2012. The funding is for a four year structured Ph.D. project, to be completed by end of August 2016.

 The project student will receive initial training based mainly at Trinity College Dublin for the first few months, but for most of the project they will be based at the Teagasc Johnstown Castle Environmental Research Centre, Co. Wexford. They will be registered as a full time research student in the School of Natural Sciences, Trinity College Dublin (www.naturalscience.tcd.ie), working under the supervision of Dr. Catherine Coxon. The student will work in association with Teagasc Agricultural Catchments Programme personnel (www.teagasc.ie/agcatchments) and the primary Teagasc supervisor will be Dr. Per-Erik Mellander.

Applicants should submit (a) a curriculum vitae, detailing their qualifications and experience, (b) proof of driving licence, (c) a covering letter explaining why they wish to pursue this project, and (d) contact details for two referees. This should be sent to: Dr. Catherine Coxon, Department of Geology, School of Natural Sciences, Trinity College Dublin, Dublin 2, Ireland. E-mail: cecoxon@tcd.ie Phone +353-1-8962235
Closing date for applications: May 18th, 2012.

Red List highlights six Irish freshwater species at risk of extinction

Pollan
Copyright www.loughallenbasin.com/pollan.html

Six of Ireland’s 15 native fish species and one of its three amphibians have been included in the revised Red Data List of Irish Amphibians, Reptiles and Freshwater Fish published by the National Parks and Wildlife Service Link. The European eel (Anguilla anguilla) is listed as Critically Endangered and five more fish species (pollan, Artic char, twaite shad, Killarney shad and Atlantic salmon) were found to be Vulnerable. The Natterjack Toad (Epidalea calamita), is classified as Endangered.

For the first time, the status of naturalised non-native fish is discussed. Two of these, dace and chub, have been identified as invasive requiring management. The report sets out management polices and actions for the preservation of Irish Amphibians, Reptiles and Freshwater Fish.

Water Meters...A Holistic Approach to Water Conservation



Copyright Plymouth Water

 Quite of few people have been asking for my opinion on the introduction of water meters in Ireland. To be quite honest I am not generally in favour of universal metering simply because of the cost. I would favour a temporary flat rate charge in areas where supplies are not at a critical level, but the introduction of meters in areas where alternative supply side investment is being planned, such as Dublin. However, I feel that the introduction of meters as planned is very crude and that a more integrated approach is needed for water conservation.  A more ambitious plan, which would secure our water supplies for at least the next fifty years, would be to include the householder more directly in this process. I would like to see every household have their supply pipe checked when the meter is installed for leaks, that it is not lead and that the electricity system is not earthed via the pipe. Also, every householder should be given the option to have all their taps and shower heads, and possibly also their toilets replaced with conservation low-flow units at a discounted rate to ensure maximum conservation of water. This installation of meters and household upgrades should be carried out by registered plumbers trained for this task. I would also subsequently like to see all households given the option to buy into some form of service arrangement so that they can have their household system checked regularly for leaks and repaired where necessary for a small annual fee. This would make water conservation savings well in excess of 40% possible as well as ensuring higher quality water. We need to tackle the lead issue, promote the sensible use of water and to reduce leakage on the supply side of the service pipe.

New Paper on Co-treatment of Acid Mine Drainage with Domestic Wastewater

In a new paper published by Theresa Hughes of the Water Technology Research Group the concept of treating acid mine drainage with conventional domestic wastewater using activated sludge has been shown to be a viable option. Using a synthetic drainage toxicity tests showed that activated sludge can withstand high proportions of AMD (EC50 19–52% AMD by volume). Laboratory-based sequencing batch reactors were also used to examine the treatability of AMD. Results from OUR inhibition tests on acclimatized activated sludge indicated that over a relatively short timescale (21 days), the activated sludge microbial community can adapt to AMD sufficiently so that shock loads of metals and acidity do not significantly inhibit OUR.
Theresa A. Hughes and N. F. Gray (2012) Acute and Chronic Toxicity of Acid Mine Drainage to the Activated Sludge Process. Mine Water and Environment, 31, 40–52 (DOI 10.1007/s10230-011-0168-y) Link

National Ground Water Awareness Week

With all the attention Irish groundwater has been given over the years by the EPA here in Ireland, and it’s protection being cited as the major driver behind the introduction of septic registration and monitoring; it is surprising that we haven’t adopted the scheme run by the USEPA and organized a Ground Water Awareness Week. Forty-four percent of America's population regularly depends on ground water for its drinking water supply with in excess of 90 % of all public drinking water systems relying on ground water resources. So public awareness and participation in its protection is very important. The USEPA have set up a dedicated site for the event with loads of interesting downloads and activities. I particularly liked the Citizen's Guide to Ground Water Protection which describes how everyone can help to protect supplies and how to build your own aquifer in a cup. Check it out!   Link

National Ground Water Awareness Week runs from  March 11 to 17

Water Restrictions Could Spread to Ireland

Shower timers can be tradtional egg timer
design or digital alarm systems

I am feeling rather depressed at not being issued with a waterproof four- minute egg timer for use in my shower as a simple tool to conserve water.  These are being issued throughout south-east England in an attempt to conserve supplies. South East and Anglia Water areas are especially at risk as are the midlands, including Birmingham.  However, with hosepipe bans inevitable, it appears that we are heading for a very dry year…as dry as 1975 which I remember very well.  It was the first and only time I have seen lawns and agricultural grassland simply wither and die.  Ireland may also be facing a similar situation this summer and as supplies are always at a critical level in the East, especially in the Greater Dublin area, it is perhaps time to seriously consider conservation measures and issuing waterproof egg timers here as well.

New Research Paper from the Water Technology Research Group.

The latest research paper from the Water Technology Research Group

Dubber, D. and Gray, N.F. (2011) The influence of fundamental design parameters on ciliates community structure in Irish activated sludge systems. European Journal of Protistology, 47, 274-286.

Abstract
The protozoan community in eleven activated sludge wastewater treatment plants (WWTPs) in the greater Dublin area has been investigated and correlated with key physio-chemical operational and effluent quality parameters. The plants represented various designs, including conventional and biological nutrient removal (BNR) systems. The aim of the study was to identify differences in ciliate community due to key design parameters including anoxic/anaerobic stages and to identify suitable bioindicator species for performance evaluation. BNR systems supported significantly different protozoan communities compared to conventional systems. Total protozoan abundance was reduced in plants with incorporated anoxic and anaerobic stages, whereas species diversity was either unaffected or increased. Plagiocampa rouxi and Holophrya discolor were tolerant to anoxic/anaerobic conditions and associated with high denitrification. Apart from process design, influent wastewater characteristics affect protozoan community structure. Aspidisca cicada was associated with low dissolved oxygen and low nitrate concentrations, while Trochilia minuta was indicative of good nitrifying conditions and good sludge settleability. Trithigmostoma cucullulus was sensitive to ammonia and phosphate and could be useful as an indicator of high effluent quality. The association rating assessment procedure of Curds and Cockburn failed to predict final effluent biological oxygen demand indicating the method might not be applicable to treatment systems of different designs.

The Chlorine Institute

There are so many interesting an informative websites in cyberspace now that it is hard to keep track. An interesting one for me is the Chlorine Institute which works with the Chlor-alkali industry. Chlorine is synonymous with water and wastewater disinfection, although it has enormous industrial applications. But those of you interested in the use of chlorine and its derivatives for water disinfection should check out this large and informative site. There is a particularly interesting section on Emergency Response. Link.

Crap in a Bag Could Change the World?

Introducing the Peepoo. This is a novel approach to improving sanitation while at the same time creating useful biomass and fertilizer. The use of night soil has been exploited by farmers for centuries, but the introduction of the Peepoo is a clever idea to prevent disease transmission and to generate income in developing countries.
The Peepoo is a biodegradable plastic bag 14 x 38 cm which people use as a portable toilet. The bag contains urea powder which reacts with the urine and faeces helping decomposition but also raising the pH. Pathogens are inactivated within 2-4 weeks depending on the temperature. The bioplastic is made from a mixture of aromatic co-polyesters and polylactone acid (PLA), with small additives of wax and lime. With time these degrade in the soil to release the N and P as well as adding vital water retaining biomass to the soil. As fertilizer is expensive in developing countries many local suppliers of Peepoo bags pay a small refund if the bag is returned full. These are then stored in heaps and allowed to slowly degrade producing a sellable nutrient enriched biomass for local farmers. One person using the bags for a year is equivalent to an artificial fertilizer loading of 6 kg urea 2 kg Total P and 1 kg potash.

PhD Awarded to Water Technology Research Group Member

Congratulations to former Water Technology Research Group research student Donata Dubber who was awarded her PhD degree today.  The title of her thesis was  The effects of anoxia and anaerobia on protozoan communities in activated sludge operation. The study was supported by Science Foundation Ireland.

New Wastewater Treatment Plant for North Dublin

Fingal County Council has identified nine possible sites for its new wastewater treatment plant to serve North Dublin County. This will also include a new sewerage network and a marine outfall.   It is holding a number of public consultations days at their offices in Swords.  Further details can be accessed at their website. 

New Ozonation Book

There are some books that are just very good. Ozonation of Water and Waste Water by Christine Gottschalk, Judy Libra and Adrian Saupe is one of them. Ozone is not widely used in Ireland for either drinking water or wastewater treatment, and because of that my knowledge base is very superficial. However, the scope and clarity of this textbook, written in clear and accessible English, has excited a new interest in the area. I recommend it to you. ISBN: 978-3-527-31962-6. Published by Wiley-VCH, Weinheim in 2010.
Amazon Link for access to the book.

UK river quality continues to improve

The official figures for UK rivers have shown a significant improvement in overall quality with many famously polluted rivers now of good quality. There is no doubt that the new Water Framework Directive has given that extra impetus for the improvement with all agencies, landowners and other stakeholders working closely together to achieve good quality status or higher in all surface waters by 2015. Link In contrast, Irish rivers struggle to meet EU targets with EPA figures not revealing the true extent of the problem.

Otter populations in England make a comeback

The Otter (Lutra lutra)  almost become extinct in England from the mid 1950’s through to the early 1970’s due to river pollution and in particular organochlorine pesticides.  This month Environment Agency announced that the otter is now to once again to be found throughout England with 59% of traditional otter sites surveyed (2,940) now colonized compared to just 6% in 1979. Rivers in England are now the cleanest they have been for the past 20 years and with fish stocks improving recolonization of rivers by otters and salmon has been seen as the last step in the restoration of England’s rivers.  Link Otters are also very common on many Irish rivers, but as numbers of otters increase there are concerns from many fishing clubs that their restocking and restoration work is simply filling the otter’s larder!  This has led to some conflict between conservation and angling organizations.