25th - 26th April 2018, Wakefield
There are now over 600 Anaerobic Digestion plants in the UK processing a range of feedstocks, from sewage sludge to crops to food waste to liquid effluent produced from manufacturing. Operators and managers are faced with the challenges of increasing energy production whilst minimising the costs associated with digestate disposal/recycling. The supporting assets around the digester are vitally important in meeting these challenges.
This course provides operators, managers, designers and engineers with real life examples of digestion of different materials, successes and failures.
Over the past decade our attendees have told us that they value this course because:
Separate courses are available for specific topics in specific sectors – please contact MatthewSmyth@aquaenviro.co.uk
Day 1: Wednesday 25th April 2018
The different phases of AD & key terms
An introduction to anaerobic digestion (AD) which covers the key biochemical pathways to methane production as well as concepts of reactor design, configuration and operation.
Digester design and biogas handling
Different digester configurations, feeding approaches, and gas management options. This module covers continuous, semi-continuous, batch, plug-flow, up-flow anaerobic sludge blanket (UASB) and continuous stirred tank reactor (CSTR) configurations – together with gas quality and handling, CHP and has upgrading.
This module introduces the concept of hazard analysis and critical control points (HACCP) planning, shows how it is used in sludge and digestate quality management – and how it influences plant layout, design and equipment selection. Management.
Metrics for digester operation
Following the introductions to AD and digester design, this module expands on key operational metrics – why they are important and how that should be measured. Organic loading rate, hydraulic retention time, volatile solids’ destruction, volatile fatty acids and alkalinity will all be explored.
Common operational problems & solutions
AD has been used for processing sewage sludges for well over a century, but this doesn’t mean that there are never problems. More recent diversification in digester feedstocks (such as food waste and silage) means that more things can go wrong, as digester configuration suited to one feedstock are misapplied to others. Foaming, mixer fouling, tank failure, ammonia inhibition, grit and other common problems are considered in this module.
Day 2: Thursday 26th April 2018
Overview: biosolids and digestates
Having considered digester design and operation on Day 1, the second day focusses more on the back end of the process, beginning with an introduction to different types of digestate / biosolids – their benefits, regulation and key issues.
This module takes a closer look at regulations and quality assurance – starting with the customer, and delivering fit-for-purpose material that meets their expectations. Concepts of sludge, waste and product will be considered, together with the Biosolids Assurance Scheme (BAS) and Biofertiliser Certification Scheme – which includes PAS110.
Maximising biogas production and how this influences digestate dewaterability
De-watering is a key element of sludge management, but is not without challenges. This module covers the principles of de-watering and importance of polymer selection before examining why there are often differences between expected and actual performance. The impacts of liquor or digestate return and the relationship between feedstock and dewaterability are also explored.
Agricultural use of biosolids and digestate
In the UK, most biosolids and digestate are applied to agricultural land, but this process may be managed by a third party, disconnecting the producer from the end user. This module provides an insight into nutrient planning and the regulatory context within which farmers have to operate – highlighting the importance of delivering a joined-up service to maximise digestate value.
Other options for digestate
While previous modules highlight the importance of the agricultural market, this is by no means the only option. Sports turf, land restoration and horticulture are considered here, alongside other approaches that extract nutrients from digestates – set within the context of cost, value and regulation.
This training package covers a lot of ground in two days, but is paced to give time for group and one-to-one discussions.
Who should attend:
Matthew Smyth, Associate Technical Director
See Matt’s details below
Dr David Tompkins, Bioresources Development Manager
See David’s details below
See Maryam’s details below
ADDRESS: 9 Appleton Court, Calder Park, Wakefield, WF2 7AR
For more details please see the leaflet Aqua Enviro Events Suite Travel Information that you can download above on the left hand side.
TIMES: Training will begin at 9.30 am with tea and coffee available from 9.00 am. There will be two tea breaks and a break for lunch (which is provided), the day finishes around 5.00 pm or a little before.
Multiple Booking Discount: Multiple booking discounts are applied on a sliding scale as to the number of delegates booked:
If you would like to make a bulk booking please email Clare Hunter (email@example.com) with the following details: