Applications - Primarily Rural Waste To Energy

 AGAMA BiogasPro is primarily a rural waste to energy solution.


We have case studies available for download reflecting the different applications of the AGAMA BiogasPro.

The AGAMA BiogasPro can be used in a range of applications:  as a dedicated waste stream processor, as part of a wastewater treatment system, or as a combination of these.  The fundamental rule is, the more energy content you put in, the more energy and fertilizer you get out. So, we promote the concept of co-digestion where the AGAMA BiogasPro is used to treat different wastes at the same time, which means better value for money.  And, this means a happier biology within the digester, which means a stable and reliable biogas and fertiliser output. Better, generally!

1.     Rural Eco Lodges and Conference Venues - food waste, animal waste to produce gas for cooking  1

2.     Rural schools - food waste, sewerage to produce gas for cooking - sanitation, nutrition, sustainability and education– ideal for successful CSI projects. 1

3.     Farmers – food waste, sewerage to produce gas for cooking. 2

4.     Rural Household - food waste, sewerage, animal waste to produce gas for cooking  2

5.     Restaurants and communal kitchens - food waste, animal waste to produce gas for cooking  3

6.     Urban Environment – green living - food waste, sewerage, animal waste to produce gas for cooking  3

 

1.     Rural Eco Lodges and Conference Venues - food waste, animal waste to produce gas for cooking

Eco lodges benefit greatly from AGAMA BiogasPro digesters. The kitchens oftene generate far more food waste than regular households. This is because there is generally excess food produced for guests and there is no local outlet to use the food waste. The food waste from the kitchen is fed into the digester – removing the need to bury or transport the waste. The produced biogas is used directly in the kitchen – removing some of the need for cooking gas ( LPG ), electricity or wood. The ecolodges currently using biogas are in the Western Cape (Malmesbury), Namibia, the Okavango delta in Botswana. They all have good results, lower imported energy costs and reduced waste disposal costs.

Guests are increasingly aware of their environmental footprint, and burning biogas is one of the best and easiest way to do this.

2.     Rural schools - food waste, sewerage to produce gas for cooking - sanitation, nutrition, sustainability and education– ideal for successful CSI projects

In a rural school environments in South Africa, sanitation has lagged behind other demands. This has forced NGO Section 27 in South Africa to take the government to court to force it to improve school sanitation. All these schools are poor and under-resourced.

By installing biogas digesters, they treat the sanitation issue, and gain the advantage of nutrition from the treated liquid overflow, gas for cooking school meals at no cost, replacement of energy sources like LPG and electricity and the ability to educate learners and staff on gas – for physical science and biology.

Theschool have few resources and very limited budgets for ongoing costs. As a result, AGAMA BiogasPro is the most sustainable solution as it provides FREE cooking gas from the waste. This has been successfully demonstrated in rural educational environments in the Eastern Cape, KwaZuluNatal and in Limpopo. Many of rural schools have or are interested in starting their own vegetable gardens. The nutrient rich liquid overflow can be processed and used on irrigation, which reduces the money spent on nutritious food for learners meals.

The lifetime costs of using a biogas digester are the lowest and the solution is the most sustainable. There are no running costs left behind, so the Biogas digesters reduce dependence on electricity and LPG, thereby saving school running costs.

The rural schools can use the gas for physical science and biology education, especially where there are no laboratories equipped with LPG for experiments.

This case of Myeka High School, KZN was reported here at the Domestic Use Of Energy Conference 2004.

3.     Farmers – food waste, sewerage to produce gas for cooking

In a rural environment, septic tanks are well known. The AGAMA BiogasPro is an enhanced septic tank that provides cooking gas from the farm waste.

Typically, a smallholding or farm environment is very well suited to using an onsite biogas digester.  The application would be that the overflow is directed to the underground soakaway (French drain). We often find that there is an existing septic tank with soakaway on the site, with the septic tank needing refurbishment; or simply that our customers have identified that the AGAMA BiogasPro is a better solution for them.  In this instance, we install the AGAMA BiogasPro upstream of the septic tank, and then overflow to that thus achieving longer retention times and excellent biodegradation.

4.     Rural Household - food waste, sewerage, animal waste to produce gas for cooking

For rural households the viability of biogas digesters as a source of clean energy and fertilizer for food security is clear.  AGAMA Energy undertook the South African National Rural Domestic Biogas Feasibility Assessment in 2007/08, which indicated a potential for over 300,000 rural biogas digesters in the country.

The BiogasPro SmartTop has been designed specifically with the key operational and performance parameters for rural households in mind.

The primary issue is affordability for any rural infrastructure service (such as biogas systems) so this information here is specifically targeted at government institutions that are much needed to facilitate and subsidize the rollout of these systems.  At the same time, the Department of Energy has initiated a Working for Energy Programme (along the lines of the Working for Water Programme) with rural household biogas systems being one of the key elements of this initiative.

 

5.     Restaurants and communal kitchens - food waste, animal waste to produce gas for cooking

Restaurants and communal kitchens such as canteens are usually found in commercial, industrial or tourist accommodation environments.   More than one BiogasPro may be specified if there is a large amount of food waste available.  It is important to note that the installation will always require that a grease trap be installed.  In some cases sewerage has been added food wastes to increase the benefits from using the AGAMA BiogasPro digesters.

6.     Urban Environment – green living - food waste, sewerage, animal waste to produce gas for cooking

The use of biogas in the urban environment is increasingly becoming acknowledged by municipal officials as a viable and useful option.  We have installed a number of systems in urban areas with municipal planning approval, and we anticipate that with an increasing number of reference projects our AGAMA biogas systems will become more widespread. 

In urban areas, the simplest  and cheapest application is to connect the overflow of your digester to the sewer.  If you are in an area where an underground soakaway (also called a French drain) is allowed then you can overflow into that.  If your system treats sewage and you cannot do either of these two things, to comply with water quality regulations you will have to install an additional (aerobic) component.

To avoid this latter option but still retain access to the valuable nutrients in the slurry leaving the digester, you can connect your grey water and food waste to the digester and overflow directly to you garden/lawn.

FULL SANITATION SOLUTIONS:

The BiogasPro and Biorock is the only combined domestic
system in the world that requires no electricity and meets
the highest standards.

Download the details here

We have case studies available for download reflecting the different applications of the AGAMA BiogasPro.

 AGAMA Energy , our consultancy division provides technical consultancy support for planning and evaluating larger biogas systems in the agricultural, food and beverage and municipal solid waste sectors.

 

Greg Austin
Tuesday, 09 April 2013