江蓠生长对甲壳素废水的净化作用

Purification Effect of Growth of Gracilaria on Chitin Wastewater

探索小型水泥池中甲壳素废水对江蓠生长的影响以及江蓠生长对甲壳素废水的净化作用。在1m3水泥池中收养100g长度为5cm的江蓠,充气并加入不同比例的甲壳素废水,平行2组;加入同一比例甲壳素废水,以不同温度进行处理,平行1组。结果表明:在10:1的甲壳素废水中,江蓠生长的适宜温度为26℃左右;甲壳素废水的浓度影响江蓠的生长率,第10d时,添加10:2的浓度有较高的生长率;江蓠在浓度为10:10废水的生长过程中,第3d对CODCr、BOD5去除率最佳,分别为65.8％、52.1％。通过江蓠生长与自然条件下的废水净化效果的比较,江蓠的正常生长能使甲壳素废水达到排放标准。

Study on effect of chitin wastewater on growth of Gratilaria and growth of Graciliaria on purification of chitin wastewater in small cement pool has been conducted. Cultivating 1000g. 5cm long Gracilaria in a 1m' cement pool at 26℃ which is suitable temperature for Gracilaria growth, and adding certain amount of chitin wastewater in different samples. The results showed that concentration of wastewater did affect the growth rate of Gracilaria during cultivation, but Gracilaria could adapt the changes of circumstances gradually. Gracilaria would grow well in wastewater rich in nutrition. Comparison of purification of water quality between cultivation and natural purification showed that purification of wastewater from chitin by growth of Gracilaria was better than natural purification.