A Pig-Waste Bio-digester
                                    
                                    
                                        Sat 18 Mar 2017
                                    
                                        
                                            6:41
                                        
                                    An innovative and award-winning solution to an effluent problem on a Taranaki pig farm has resulted in a system that generates around half the farm’s electricity needs and could have potential for application on dairy farms as well.