According to the characteristics of dynamic WEC,this paper offers the way to design hydrological conditions,combined with the water pollution load control requirements. Based on domestic WEC calculation standard,existing techniques and other hydrological condition design principles,this paper gives hydrological conditions design process to meet the water-body and chemical changes. The determination of hydrological condition of cross-section has become the key to calculate the WEC. As for Huntai River watershed,the WEC of COD is 144 626t,and WEC in low-flow period,level period,and high-flow period accounts for 16.2%,35.4% and 48.4% respectively. The WEC of amino -nitrogen is 9 776 t,and WEC in low-flow period,level period,and high-flow period accounts for 16.2%,35.4% and 48.4% respectively.The rationality of dynamic WEC results has become a basis for judging the reliability of hydrological conditions design.
Key words
dynamic WEC /
design hydrological condition /
Huntai River
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