CAJ | 학술논문

选取滇池福保湾表层沉积物,以聚合氯化铝为钝化剂,研究了扰动强度对钝化剂抑制沉积物中磷释放的影响.结果表明,当扰动强度低于一定范围时,聚合氯化铝对沉积物中的磷有抑制作用,当转速为0,60,120r/min时,对应的水中磷浓度分别为初始值的62.5%,71.7%和83.4%;当转速达到240r/min时,沉积物会向水中释放大量磷,钝化作用完全被破坏,水中磷浓度为初始值的3.3倍.此外,在转速低于120r/min时,磷形态主要是以无机磷(DIP)为主的溶解性磷(DTP),而转速达到240r/min时,水中DTP/TP<30%,DIP/DTP<40%,即磷形态主要为不溶性磷,溶解性磷中以有机磷(DOP)为主.
선취전지복보만표층침적물,이취합록화려위둔화제,연구료우동강도대둔화제억제침적물중린석방적영향.결과표명,당우동강도저우일정범위시,취합록화려대침적물중적린유억제작용,당전속위0,60,120r/min시,대응적수중린농도분별위초시치적62.5%,71.7%화83.4%;당전속체도240r/min시,침적물회향수중석방대량린,둔화작용완전피파배,수중린농도위초시치적3.3배.차외,재전속저우120r/min시,린형태주요시이무궤린(DIP)위주적용해성린(DTP),이전속체도240r/min시,수중DTP/TP<30%,DIP/DTP<40%,즉린형태주요위불용성린,용해성린중이유궤린(DOP)위주.
To make sure if the inactivation agent on the phosphorus (P) release inhibition can last for long time, the sediments from Fubao Gulf of Lake Dianchi were selected, for the experiment to study the effect of perturbance strength on the P release inactivation capability of the inactivation agent (PAC). When the speed of the stirrer was in a certain range, the inhibition of PAC on P release from the sediment was obvious, when the speeds of the stirrer were at 0r/min, 60r/min and 120r/min the amounts of P in the water were about 62.5%, 71.7% and 83.4% of the initial value, respectively.However, when the speed was at 240r/min, the sediment released a great amount of P to the overlying water, which destroyed the inhibition function of PAC on P release from the sediment. The final value was about 3.3 times of the initial amount. Moreover, the P in the overlying water was mainly composed of dissolved P which was mainly made of inorganic composition. While the perturbance strength was high enough, the ratio of DTP/TP (ratio of dissolved total P to total P) was below 30% and the DIP/DTP (ratio of dissolved inorganic total P to DTP) was below 40%, which means that undissolved phosphorus made up of the main part of the TP and most of the DTP was organic phosphorus.