Newer have more than 8 ...
Published by Jørgen Sundt
Newer have more than 8 promille fall on pipes and and design uýour inlet bassin big ennogh due to more rain and as water gets thined by rain the airination by musrooms is a good idea
Also the use og Gas engines from BB from tanks decomponating waste will help if CO2 and CH4 is seperated can make hot water from cooling and el power from generators also an exhaust boiler is a good idea