Viene valutato I’impatto ambientale che un depuratore comunale ha su un piccolo corsod’acqua superficiale e la capacità di quest’ultimo di autodepurarsi. La valutazione viene fatta utilizzandoil metodo dell’E...Viene valutato I’impatto ambientale che un depuratore comunale ha su un piccolo corsod’acqua superficiale e la capacità di quest’ultimo di autodepurarsi. La valutazione viene fatta utilizzandoil metodo dell’E.B.I, stilando cosi anche la mappa di qualità del Naviglio di Isorella.Environmental impact of a civil sewage treatment plant on a small watercourse and itscapability to purifing itself. The evaluation is made according to the E.B.I. method. A map of the waterquality of the Naviglio di Isorella, in the Brescian plain (Northern Italy), is also provided.展开更多
The air microbial species and quantities in a wood mill in Harbin, China weremeasured using sedimentation plate method. Results showed that the microbial quantity in the air atthe workshop without depurator (54939 cfu...The air microbial species and quantities in a wood mill in Harbin, China weremeasured using sedimentation plate method. Results showed that the microbial quantity in the air atthe workshop without depurator (54939 cfu·m^(-3)) was 2.1 times that of the workshop withdepu-rator (25768 cfu·m^(-3)). The depurator could purify air microorganisms at the workshop, witha purifying rate of 53.1%, but it did not reach the standards of clean air. Comparatively thedepurator is effective in reducing the quantity of air actinomyces, and some kinds of airactinomyces, such as Scabies, Cinereas and Hygroscopicas, can be clean out, but it is not veryeffective to bacteria and fungi. It is suggested that more effective and feasible methods should bedeveloped for purifying air microorganisms at the workshop in the future.展开更多
文摘Viene valutato I’impatto ambientale che un depuratore comunale ha su un piccolo corsod’acqua superficiale e la capacità di quest’ultimo di autodepurarsi. La valutazione viene fatta utilizzandoil metodo dell’E.B.I, stilando cosi anche la mappa di qualità del Naviglio di Isorella.Environmental impact of a civil sewage treatment plant on a small watercourse and itscapability to purifing itself. The evaluation is made according to the E.B.I. method. A map of the waterquality of the Naviglio di Isorella, in the Brescian plain (Northern Italy), is also provided.
文摘The air microbial species and quantities in a wood mill in Harbin, China weremeasured using sedimentation plate method. Results showed that the microbial quantity in the air atthe workshop without depurator (54939 cfu·m^(-3)) was 2.1 times that of the workshop withdepu-rator (25768 cfu·m^(-3)). The depurator could purify air microorganisms at the workshop, witha purifying rate of 53.1%, but it did not reach the standards of clean air. Comparatively thedepurator is effective in reducing the quantity of air actinomyces, and some kinds of airactinomyces, such as Scabies, Cinereas and Hygroscopicas, can be clean out, but it is not veryeffective to bacteria and fungi. It is suggested that more effective and feasible methods should bedeveloped for purifying air microorganisms at the workshop in the future.
