摘要
对不同浓度的棉浆黑液分别在高温和中温条件下进行了好氧培养,并考察了各种COD的降解情况。结果表明:温度对棉浆黑液好氧处理的各种COD去除效果影响较大。对于低浓度棉浆黑液(CODtot≤10000 mg/L),30℃时,随着培养时间的延长,各种COD持续下降,CODtot和CODcol去除率最大分别可达55.7%和100%;而50℃时,CODtot去除率最高只能达到35.4%,且CODss和CODcol波动很大;对于高浓度棉浆黑液(CODtot≥10000 mg/L)。
Cotton pulp black-liquor of different concentrations was treated by aerobic cultivation on the temperature of thermophilic and that of mesophilic respectively. The removal efficiencies for COD were concerned. The results showed that： cultivated temperature played an important role on the aerobic treatment of black liquor, To low concentration black liquor （CODtot≤10 000 mg/L）, various COD descends continuously at 30℃ and the max removal rates of CODtot, and CODcol were 55.7% and 100% respectively; But at 50 ℃ , the max COD,,, removal rates was only 35.4%, and the CODss and CODcol fluctuated greatly; To high concentration black liquor （CODtot≥ 10 000 mg/L ）, mesophilic conditions was more advantageous to playing the role of bio-degradation for aerobic activated sludge.
关键词
棉浆黑液
好氧生物处理
高温
Cotton pulp black-liquor
Aerobic biological treatment
Thermophilic
Mesophilic.
