Patent ID: 8007567

Claim:
A biogas processing system comprising: a) a first compressor having a biogas input and a compressed biogas output; b) a first pump having a water pump input and a water pump output; c) a first scrubber tower having a first mixing chamber, a first compressed gas input, a first water input connectable to the water pump output of the first pump, a first water output, and a first processed gas output, the first mixing chamber in communication with the first compressed gas input, the first processed gas output, the first water input and the first water output; and d) a water filtration member operably connected to the first water output, the filtration member configured to remove contaminants from the water exiting the first scrubber tower, wherein the water filtration member is formed as part of a water supply system, the water supply system further including: i) a heating device operably connected to and downstream of the first water output; ii) a stripping device operably connected between the first water output and the first pump; and iii) a water reservoir connected between the stripping device and the first pump.