民用住宅中的污水，一般是通过污水管道直接排泄至化粪池或暗沟的．可是化粪池（或暗沟）中的腐烂物质产生的臭气容易沿着污水排泄管道上升，经洗菜池的泄水口进入室内，如果遇到天气变化，臭气更加严重，对居民的生活环境和身体健康均有不良影响。现介绍一种比较简便实用的防 The sewage in a residential house is generally discharged directly to a septic tank or a ditch through a sewage pipeline. However, the odor generated from the decayed material in the septic tank (or ditch) is likely to rise along the sewage discharge pipe and enter the room through the drain of the vegetable washing pond. If weather changes are encountered, the odor becomes more serious and the living environment of the residents is affected. Both have adverse effects on physical health. Now introduce a relatively simple and practical defense