GUO Wei,YU Hong-jiu,YU Chun-sheng,et al.Effect of Biomass Carbon on Nitrogen Transformation During Composting of Urban Sewage Sludge[J].HEILONGJIANG AGRICULTURAL SCIENCES,2016,(11):41-44.[doi:10.11942/j.issn1002-2767.2016.11.0041]
生物质炭对城市污泥堆肥过程中氮素转化的影响
- Title:
- Effect of Biomass Carbon on Nitrogen Transformation During Composting of Urban Sewage Sludge
- 文章编号:
- 11-0041-04
- Keywords:
- biomass carbon; municipal sludge; aerobic composting; nitrogen
- 分类号:
- S141.1
- 文献标志码:
- A
- 摘要:
- 为揭示生物质炭在城市污泥堆肥发酵中的应用潜力，提高城市污泥的堆肥效率和堆肥品质，以城市污泥和稻壳为堆肥原料，分别添加0，3%、5%、10%的生物质炭，采用高温好氧堆肥工艺,通过测定堆肥过程中温度、pH及硝态氮、铵态氮及总氮含量等的变化,研究了添加不同比例生物质炭对城市污泥好氧堆肥过程中氮素转化的影响。结果表明:生物质炭的添加可提高堆肥过程中氮的利用率，促进堆肥进程。各处理的堆体发酵中温度达50 ℃以上时间均保持了7 d 以上，都达到国家堆肥的无害化标准；添加生物质炭可使城市污泥的好氧发〖JP2〗酵期提前；随着堆肥过程的进行，各处理中总氮含量均呈下降趋势，pH呈先上升后下降而后趋势于平稳上的趋势，硝态氮呈先上升后趋势于平缓的趋势，铵态氮和温度都呈先上升后下降趋势，各处理间存在差异，但趋势相同。 综合各项指标,与其它处理相比处理2即当生物质炭添加量为5%时，整个堆肥过程表现较好。
- Abstract:
- To reveal the biomass carbon potential in the application of sewage sludge composting fermentation,improve the efficiency of the composting of urban sludge and compost quality,taking city sludge compost and rice husk as raw materials，with the addition of 0,3%,5%,10% of the biomass carbon by high-temperature aerobic composting process,by measuring changes in the composting temperature,pH and nitrate nitrogen,ammonium nitrogen and total nitrogen content,the effects of adding different ratio of biomass carbon on nitrogen transformation in aerobic composting process of sewage sludge were studied. The results showed that the addition of biomass carbon could increase the utilization ratio of nitrogen in the process of composting,and promote the process of composting. The pile fermentation temperature of 50 ℃ more were maintained for more than 7 days,reached standard of sub national compost harmless; add biochar could advance the urban sludge aerobic fermentation period; with the composting process,total nitrogen content in each treatment showed downward trend,pH was increased first and then decreased,nitrate nitrogen was increased first and the tended to be gentle ammonium nitrogen and temperature was increased first and then decreased,the differences,but the same trend. Comprehensive indicators,compared with other processing processing 2 when biomass carbon content was 5%,both in the performance was better in the composting process.
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备注/Memo
收稿日期：2016-10-21