Industrial pollution behind rapid economic development, 
                
                life pollution behind high-quality social development,
                
                and agricultural pollution behind increasing agricultural
                
                products year by year... 
                
                Various reasons have led to the continuous aggravation
                
                of environmental pollution. The imperfection of national
                
                laws and regulations and the lack of local more difficult.
                
                The complexity of water remediation technology has become
                
                costly, making water pollution a great problem.