搓动式沉水植物脱盐机脱盐效果的试验研究

摘要

In the ecological management and resources development of Lake Wuliangsuhai , harvesting submerged vegeta-tion by mechanization method can decrease the accumulation of internal nutrient salts ; meliorate the water environment and transfer nutrient salts of nitrogen and phosphorus to achieve the purpose of eutrophication management and resources development .Design of rubbing type submerged vegetation desalting machine can decrease the amount of nutrient salts on the submerged plants after harvesting , improve the dainty of submerged vegetation feedstuff .Desalting submerged vegeta-tion shows that removal effect for about 9%-22 %moisture , 720 r/min rated rotation speed and 16 mm size of vibration sieve pore is the best and maximum removal rate reaches to 85 .45%, its desalting efficacy is better than beater pulveriz-er.Grey system theory model was set up to estimate desalting rate , average error is -1.66%, which lays theoretical foundation for its technology parameter optimization .%在乌梁素海的生态治理和资源开发中，以机械化方式收割沉水植物能够削减湖泊内各种营养盐的积累，转移各种氮磷营养盐，改善水质环境，实现湖泊富营养化治理和资源开发兼顾的目的。搓动式沉水植物脱盐机的研究设计，能够减少收割后沉水植物的含盐量，提高其作为沉水植物饲料的适口性。对晒干后的沉水植物进行脱盐试验表明：在含水率9％～22％，电动机额定转速720r/min，振动筛孔16mm 时，最大去除率达85．45％，较锤片式粉碎机去除效果好。利用灰色系统理论建立数学模型，预测不同工艺参数时的沉水植物饲料脱盐率，其平均误差为-1．66％，可为其工艺参数优化提供理论依据。