Upgrading and Operational Benefit Analysis of an Industrial WWTP
A wastewater plant in Zhejiang Province is a terminal sewage plant for the industrial park established in the industrial park where it is located,mainly dealing with the upper reaches of the park printing and dyeing and chemical enterprises of the pre-treatment of drainage water and park enterprises living wastewater,upgrading the scale of 30 000 m3/d,the treatment of its effluent to meet the"urban wastewater treatment plant wastewater discharge standards"(GB 18918-2002)[1]in the first level of standards A standards.Through the current process,the actual operation of inlet and outlet water quality and quantity as well as the operation of the problems have been demonstrated and analyzed,in view of the improvement of the discharge standards,the current main process of the design of the treatment load has been unsatisfactory,relying only on the increase in the subsequent depth of the treatment unit in order to achieve the stability of the effluent standard is not economical,so it is necessary to select the impact resistance,stable performance of the decarbonization and denitrogenating process,as far as possible in the biochemical section of the majority of the COD,TN,NH3-N removal in the biochemical section as far as possible,to play the ultimate biochemical function;at the same time,on the basis of not adding new land,the selection of depth treatment unit should adopt advanced and mature technology,high treatment efficiency,small footprint treatment process,and through the addition of powdered charcoal so that it has a further removal of COD function as an emergency guarantee for the effluent.
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