- 城市污泥處理與綠化利用
- Sludge Treatment and Application in Greening
- 唐鳴放， 王白雪， 鄭懷禮
- 土木與環(huán)境工程學(xué)報(bào)（中英文） 2009年31卷第4期 頁碼：103-106
- DOI：10.11835/j.issn.1674-4764.2009.04.020
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紙質(zhì)出版日期：2009
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摘要
城市污水處理廠剩余污泥富含植物養(yǎng)分，在城市綠化中具有較高的利用價(jià)值，但污泥中也含有較高的重金屬，會對城市地下水產(chǎn)生二次污染。采用改性粉煤灰鈍化污泥，通過種植佛甲草綠化實(shí)驗(yàn)，探討了不同配比和用量的改性粉煤灰處理污泥對植物生長狀態(tài)以及對滲濾水的環(huán)境影響，得出用20%的改性粉煤灰鈍化污泥作為綠化植物的種植基質(zhì)可使?jié)B濾水中污染物除去80%以上。
Abstract
Sludge is a very good fertilizer source and has higher value in use as nutrients for greening, whereas sludge also contains higher concentration of heavy metals, with which urban underground water would be suffered secondary pollution. A test of greening with sedium lineare and modified fly ash passivation sludge was carried out to study the impacts of different mixture ratio and dosage of modified fly ash on the plant’s growth and leachate. It was shown that 20% mixture ratio of modified fly ash was the optimum for sludge treatment and 80% of heavy metals pollution can be removed.
