| 摘要 |
<p>Deodourising apparatus is provided including housing means adapted for interposition between an odour source and an environment external to the odour source, a porous deodorising composition operably placed in the housing for contact with the odour penetrating therethrough, and permeable separation means for retaining the porous deodorising composition in the housing means, said permeable separation means permitting odours to penetrate therethrough. The housing means may be adapted for attachment to the distal end of a vent pipe, or for insertion in line with the vent pipe, or otherwise operably associated with the exits of vent pipes. The apparatus may also act as a damper to reduce pressure differentials in the vent pipe. The deodorising and/or detoxifying composition is a granulated porous mineral composition and the odours and/or toxic gases passing into the housing and rendered non-odourous and/or non-toxic by contact therewith. The deodorising and/or detoxifying composition broadly includes a granulated zeolite and a granulated clay in the proportion of from 99 % : 1 % to 1 % : 99 % by weight of the deodorising and/or detoxifying composition. The composition may additionally comprise one or more additive compounds selected from oxidising agents, such as, for example, dichloroisocyanuric acid, potassium permanganate, sodium hypochlorite, trichloroisocyanuric acid, and/or calcium hypochlorite; drying agents, such as, for example, zinc chloride and/or magnesium perchlorate; fly repellents, such as, for example, citronella; insecticides, such as, for example, pyrethrum; antifeedants, such as, for example, neem oil; fragrances as desired; and antimicrobial agents, such as, for example, phenylphenol amphotericin B, ferrous sulfate or Fungizone; each of the additives being selected to be compatible with one another.</p> |
