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Intangible assets (Details) - USD ($)
1 Months Ended 2 Months Ended 12 Months Ended
Oct. 24, 2019
Feb. 11, 2016
Oct. 31, 2019
Dec. 31, 2019
Dec. 31, 2020
Dec. 31, 2019
Aug. 31, 2020
Jan. 31, 2020
Jan. 24, 2020
Finite-Lived Intangible Assets [Line Items]                  
Amortization of Intangible Assets         $ 891,667 $ 841,667      
Aerex                  
Finite-Lived Intangible Assets [Line Items]                  
Business Acquisition, Percentage of Voting Interests Acquired   51.00%           49.00% 49.00%
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill   $ 5,900,000              
Aerex | Non-compete agreements                  
Finite-Lived Intangible Assets [Line Items]                  
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life   5 years              
Aerex | Certification Marks [Member]                  
Finite-Lived Intangible Assets [Line Items]                  
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life   3 years              
Aerex | Customer-Related Intangible Assets [Member]                  
Finite-Lived Intangible Assets [Line Items]                  
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life   1 year              
Aerex | Customer relationships                  
Finite-Lived Intangible Assets [Line Items]                  
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life   4 years              
PERC Water Corporation                  
Finite-Lived Intangible Assets [Line Items]                  
Business Acquisition, Percentage of Voting Interests Acquired 51.00%   51.00%       61.00%    
Amortization of Intangible Assets       $ (81,200)          
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill     $ 3,990,000            
Percentage of additional voting equity             10.00%    
PERC Water Corporation | Non-compete agreements                  
Finite-Lived Intangible Assets [Line Items]                  
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life 3 years   3 years            
PERC Water Corporation | Customer-Related Intangible Assets [Member]                  
Finite-Lived Intangible Assets [Line Items]                  
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life     2 years            
PERC Water Corporation | Customer relationships                  
Finite-Lived Intangible Assets [Line Items]                  
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life     6 years            
Trade name | Aerex                  
Finite-Lived Intangible Assets [Line Items]                  
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life   15 years              
Trade name | PERC Water Corporation                  
Finite-Lived Intangible Assets [Line Items]                  
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life     15 years