论文部分内容阅读
有些地方,利用工业废水废渣,处理窨(Yin印)井(缸)、臭水塘(池、沟)、洼地积水、污水粪坑等,对杀灭蚊、蝇幼虫有一定效果。现在介绍几种供参考。 (一)漂白粉渣(漂染工业废渣)用0.25%浓度粉渣直接投放。 (二)酸渣(油脚水)酸渣1份加水4份,调匀,毎个窨井用量半斤。 (三)酸石渣(化工厂制醋石的残渣)磨成细粉撒布,每平方米用量4～6两。
In some places, industrial wastewaters, silt banks, stinking ponds (pools, ditches), depression water reservoirs and sewage cesspits are used to kill mosquito and fly larvae. Now introduce several for reference. (A) Bleaching powder residue (dyeing industrial waste) with 0.25% concentration of dust residue directly. (B) acid residue (oil foot water) 1 acid residue 1 4 parts of water, mix thoroughly, take a manure well half a catty. (C) acid slag (chemical vinegar residue) ground into fine powder, the amount of 4 to 6 per square meter two.