Condensate is an unavoidable result of air compression. It is a chemically aggressive fluid that mainly consists of water, but also contains oil and dirt particles.
Oil carryover is unavoidable if you have compressors that use oil in the compression chamber. The lubricant will mix with the condensation and create an oily water that must be properly handled to avoid violating environmental regulations.
Just one litre of used oil can contaminate up to one million litres of fresh water. This is the reason that environmental regulations strictly prohibit the discharge of oily wastes and chemicals, including the condensate drained from a compressed air system.
Compressed air condensate must therefore be treated in accordance with water resource legislation to achieve prescribed safety levels before it can be disposed of in the waste water system. Compressor condensate must therefore be either collected and treated by special processes or treated prior to disposal to the environment. An oil/water separator can be used here to remove the oil from the condensate. Since the condensate is approximately 95% water and 5% oil, water/oil separators have been developed to reduce or eliminate the amount of oil in the condensate.
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The slurry and other organic waste produced on livestock farms can be prepared in preparation tank for pumping into the bioreactor. Bioreactor is a tank in which a process of anaerobic degradation takes place.
Anaerobic digestion is a microbiological process of decomposition of organic matter, in the absence of oxygen. At this process a gas mixture - bio-gas is produced, which is stored in bio-gas storage before used.
Co-generation unit combusts clean bio-gas for electricity and heat production. Heat as a side product of electricity production is send trough heat exchanger coolant/water and stored in heat storage. Heat is used for heating bioreactor and for domestic hot water. Produced electricity is used for powering the electrical equipment on the farm.
The excesses of electrical energy are sold to electricity distributor. The substrate mixture continuously flows into the bioreactor and the same volume digestate flows through the outlet to the end lagoon. During spreading of processed digestate to the fields there are significantly less unpleasant odours as in the case of the slurry.
The engine room (co-generation unit, heat storage tank, heat exchangers, automatics…) is closed in heat and sound proof ISO container. Only bioreactor tank is installed separately near to the engine room.
