水葫芦与猪粪好氧厌氧交替堆肥特征研究

Study on characteristics of aerobic and anaerobic composting of water hyacinth and swine manure

为探讨好氧厌氧交替条件下水葫芦与猪粪堆肥的特征,将水葫芦、猪粪与木屑以1.7∶1.0∶0.3(质量比)的比例混合均匀,进行为期56天交替式好氧厌氧堆肥化处理.试验研究了堆肥过程中温度(T)、含水率(MC)、pH、挥发性脂肪酸(VFA)、C/N、水溶性铵态氮(NH4+-N)、挥发性固体(VS)、总有机碳(TOC)、总氮(TN)和总磷(TP)的变化特征.结果表明,与堆肥原料相比,好氧厌氧交替堆肥化使堆料TOC、TN及VS分别下降了47.91%、25.00%及19.32%.经测定,56天后堆料腐殖质含量为6.52%,表明交替好氧厌氧堆肥化能同时实现水葫芦与猪粪的减量化与资源化.

Water hyacinth, swine manure, and sawdust were mixed at the ratio of 1.7：1.0：0.3 （mass ratio） and a 56 days alternative aerobic and anaerobic eomposting were conducted for the treatment of the mixture to study the process characteristics and feasibility. Variation of the selective physicochemical parameters i.e. pile temperature （T）, moisture content （MC）, pH value, volatile fatty aeid（VFA）, C/N ratio（C/N）, ammonium content （NH＋a-N）, volatile solid （VS）, total organic carbon （TOE）, total nitrogen （TN） and total phosphors （TP） content during alternative aerobic and anaerobic eomposting were determined. The results showed that, TOC, TN, and VS were decreased by 47.91%, 25.00%, and 19.32%, respectively. Humus content of the composting feedstock was 6.52% after 56 days of composting, indicated that water hyacinth and swine manure could be simultaneously reduced and utilized.