LU Tao,ZHU Bao fei,SHI Chun mei,et al.Test Run of Sewage Sludge Carbonization System and Feasibility Analysis of Sludge Carbon Land Use[J].China Water & Wastewater,2018,34(21):108-111.
污泥碳化系統(tǒng)試運行及污泥炭回歸土壤可行性分析
- Title:
- Test Run of Sewage Sludge Carbonization System and Feasibility Analysis of Sludge Carbon Land Use
- 文章編號:
- 1000-4602(2018)21-0108-04
- 關(guān)鍵詞:
- 市政污泥; 碳化; 清潔性; 能耗; 養(yǎng)分元素?
- Keywords:
- sewage sludge; carbonization; cleanliness; energy consumption; nutrient
- 分類號:
- TU992.3
- 文獻(xiàn)標(biāo)志碼:
- C
- 摘要:
- 介紹了10 t/d污泥碳化系統(tǒng)組成及運行工藝，分析了該系統(tǒng)的運行能耗及清潔性，在考察污泥炭相關(guān)性質(zhì)的基礎(chǔ)上對污泥炭回歸土壤進(jìn)行了深入討論。運行數(shù)據(jù)表明，以含水率為80%、干基低位熱值為3 871.5 kJ/kg的市政污泥為原料，系統(tǒng)平均熱能消耗為2 728.34 MJ/t，其中污泥自身可提供能耗287.52 MJ/t，外部輸入能耗為2 440.82 MJ/t，電能消耗為79.2 kW·h/t。煙氣經(jīng)除塵、洗滌處理，即可實現(xiàn)達(dá)標(biāo)排放，實現(xiàn)污泥清潔性處置。污泥炭中重金屬含量符合農(nóng)用泥質(zhì)、園林綠化用泥質(zhì)以及土地改良用泥質(zhì)標(biāo)準(zhǔn)要求。污泥炭中總養(yǎng)分含量為1.94%，低于園林綠化用泥質(zhì)及農(nóng)用泥質(zhì)標(biāo)準(zhǔn)要求，優(yōu)于土地改良用泥質(zhì)要求。該工藝處理的污泥炭均可回歸土壤，一方面實現(xiàn)了污泥最終消納，另一方面實現(xiàn)了養(yǎng)分元素回收利用。
- Abstract:
- A sewage sludge carbonization system and operational process was introduced. The operation energy consumption and the emission of pollutants were analyzed. Based on the investigation of sewage sludge carbon properties, the feasibility of sewage sludge carbon land use was discussed. The moisture content of sewage sludge feedstock was 80%, and its low calorific value was 3 871.5 kJ/kg. The average heat energy consumption of the system was 2 728.34 MJ/t, in which the syngas derived from sewage sludge was 287.52 MJ/t, the external heat quantity required was 2 440.82 MJ/t, and the power consumption was 79.2 kW·h/t. The exhaust gas reached the national standard through the dedusting system and the washing system. The heavy metals contents of sewage sludge carbon reached the control standards for agriculture use, afforestation in gardens or forest, and land improvement. The total nutrients content of the sewage sludge carbon was 1.94%, which was below the control standards for agriculture use, afforestation in gardens or forest, but was beyond the control standards for land improvement. Therefore, the sewage sludge carbon is suitable for land use and nutrients recycling.
參考文獻(xiàn)/References:
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備注/Memo
作者簡介：魯濤（1984- ），男，陜西富平人，博士，工程師，主要從事市政污泥、含油污泥以及生活垃圾等固體廢棄物處置技術(shù)研發(fā)工作。
E-mail:casc_lutao@126.com
收稿日期：2018-01-12
來源：http://zggsps.paperonce.org/oa/DArticle.aspx?type=view&id=201821021
