The biobed is a purification system, which reduces soil pollution for receiving pesticide residues from handling and washing machinery in agricultural areas. The aims of this study were (1) to assess ecotoxicity effects over time to soil fauna, posed by Lorsban^® 480 BR (Chlorpyrifos) and Dithane^® NT (Mancozeb) residues when disposed of in a biobed system compared with two subtropical soils, and (2) to assess ecotoxicity effects over time to soil fauna simulating an accidental spillage with Lorsban^® 480 BR at the biobed. A semi-field experiment was conducted for 420 days in southern Brazil, testing continuous disposal of washing pulverization tanks in biobeds, Typic Haploperox or Typic Hapludults. In addition, different biobeds received a single dose (1 L) of Lorsban^® 480 BR to simulate an accidental spillage. Chronic ecotoxicity tests were performed using Folsomia candida, Eisenia andrei, and Enchytraeus crypticus in different sampling times for both experiments. F. candida was the most sensitive species. The biobed system was able to eliminate effects from residues of both pesticides over time in all species, which did not happen in both natural soils. In accidental spillage simulation, even 420 days after contamination, F. candida did not show reproduction. The biobeds can be a feasible alternative for the disposal and treatment residues of pesticides, also for handling and washing pesticides activities. The system was efficient in promoting degradation and reducing ecotoxicity effects posed by Lorsban^® 480 BR and Dithane^® NT for soil fauna. It is a safe alternative to avoid soil contamination.

生物床是一种净化系统，可减少土壤污染，以吸收农业地区处理和洗涤机械中的农药残留。本研究的目的是：（1）随着时间的推移评估土壤动物，通过乐斯本带来生态毒性^® 480 BR（毒死蜱）和DITHANE ^®具有两个亚热带土壤相比在biobed系统设置的时NT（代森锰锌）残基，并且（2）随着时间的推移到土壤动物模拟与乐斯本的意外溢出评估生态毒性^®生物床的480 BR。在巴西南部进行了420天的半田间试验，测试了在生物床，Typic Haploperox或Typic Hapludults中连续冲洗洗涤粉池的方法。此外，不同的biobeds接收乐斯本单剂量（1 L）^® 480 BR以模拟意外溢出。慢性生物毒性测试使用进行Folsomia念珠菌，赤子安德烈和Enchytraeus crypticus在不同的采样时间为两个实验。念珠菌是最敏感的物种。随着时间的流逝，生物床系统能够消除两种农药残留物对所有物种的影响，这在两种天然土壤中都不会发生。在意外泄漏模拟中，即使在污染后420天，念珠菌也没有表现出繁殖。生物床可以作为处理和处理农药残留的可行替代品，也可以用于处理和清洗农药活动。该系统在促进退化和减少由乐斯本带来毒理作用高效^® 480 BR和代森钠^® NT的土壤动物。这是避免土壤污染的安全替代方法。