We understand that there is a greater demand for sustainable, renewable energy sources and digester systems for waste consumption to ensure a better environment. It is for this reason that we at Asia Pacific Tanks Pty Ltd (T/as PMT Water Engineering) are proud to be turnkey contractors of biogas and digestion plants including supply or consultation, design, equipment selection, installation, commissioning, training and support. Our bio-digestion systems and tanks for waste recycling and energy production utilise proven European engineering and bio technology including Semi Anaerobic Hydrolysis (SAH) technology which is taking the biogas industry to the next level in efficiency and reliability.
What Type of Substrates Can Our Systems Treat?
Our advanced Semi-anaerobic hydrolysis (SAH) systems treat a range of substrates, including even the most fibrous material such as cellulose rich feedstock. In addition they treat:
- Agricultural organic bio-waste: manure, pure corn straw, maize silage and grass silage
- Organic waste: kitchen waste, food waste, municipal organic waste and food industry byproducts
- Organic waste water with a high concentration of COD and BOD5
What Are The Benefits of Our Semi Anaerobic Hydrolysis (SAH) Systems?
One of the key benefits of the Semi anaerobic hydrolysis (SAH) technology compared to traditional anaerobic/bio-digestion processes is that it cuts down the hydraulic retention time (HRT) by more than half the traditional time. Additionally compared to traditional anaerobic /bio-digestion processes the semi-anaerobic hydrolysis (SAH) unit has:
- A high biogas yield for cellulose rich feedstock (straw, grass, husks, leaves, etc)
- A low hydraulic retention time of less than 25days
- Low energy consumption for agitation
- Easier pumping (no clogging)
- The possibility of heat recovery from the outflow of the digester
- Higher methane content
- Easier plant operation and higher plant stability thanks to the feeding of acetate
- The possibility of changing the feedstock quickly
What Are The Further Benefits of Our Biogas Systems?
- Produces methane gas or ethanol industrial alcohol for fuel
- Byproducts such as organic fertiliser
What Type of Tanks Are Used For Our Biogas Projects?
We use our quality factory coated range of Code AWWA D103.97 section 6 compliant Bonded Epoxy Tanks. Capacities up to 40ML with heights over 20m. Fusion bonded epoxy steel is highly resistant to aggressive contents such as raw sewage and industrial effluents with an extensive pH range of 2 to 13.
What Type of Roof Systems Are Utilised in Our Digesters?
We have a range of roof and cover systems that have a diverse set of functions that are fit for purpose:
- Glass Reinforced Plastic (GRP) Roofs:
- Material: Glass reinforced plastics
- Function: Odour control, rain-proof, snow-proof and dust-proof
Diameter <15m: no support
Diameter >15m: central column support & internal structural support
- External Beam Steel Digester Roofs:
- Material : Glass fused to steel or epoxy coated steel plates, bolted.
- Function: Gas and water tight properties , capable to be digester, waste water treatment reactor
- Single/Double Membrane Dome Roof Systems:
- Material: Double membrane roof systems have been developed and manufactured specifically for use with the biogas tanks systems. We utilise a proprietary membrane material that has been specifically treated to strengthen the polyester fibres. An acrylic resin varnish is used externally to create a robust roof system that is UV resistant.
Single Membrane: odour control, rain, snow and dust protection
Double Membrane: biogas holder, gas and water tight
- External Gas Tank/Spherical Gas Holder:
- Material: Proprietary membrane material with special treatment to strengthen polyester fibres and an acrylic resin varnish
-Function: Gas-tight properties, H2S resistant, high UV resistance, odour control