中国煤炭
中國煤炭
중국매탄
CHINA COAL
2015年
4期
102-106,126
,共6页
低密度碳质生物载体%制备%真密度%流化性能%污水处理
低密度碳質生物載體%製備%真密度%流化性能%汙水處理
저밀도탄질생물재체%제비%진밀도%류화성능%오수처리
low density bituminous biological carbonaceous carriers%preparation%true den-sity%fluidizing performance%sewage treatment
以宁夏不粘煤、山东肥煤和长治瘦煤为原料,通过炭化方法制备碳质生物载体,研究了炭化终温、原料配比、粘结剂种类及煤焦油添加量对载体密度的影响.当炭化终温为450℃、原料配比为50∶30∶20、每100 g 原料煤中添加25 g 煤焦油时,制得最小密度为1.346 g/cm3的碳质生物载体.在自制流化床装置上测得该载体的流化性能并与某商品活性炭对比研究后发现,商品活性炭的临界流化速度、全池流化速度和流化床层高度为10 cm时的流化速度分别是制得碳质生物载体的1.57倍、1.83倍和1.77倍,表明试验制得的碳质载体具有较好的流化性能.又分别以碳质载体和活性炭为载体利用生物流化床处理乙二醇废水(稀释后COD为3500 mg/L),经过碳质载体流化床的出水COD最低可降至240 mg/L,对COD的去除率达到93.14％,表明碳质载体具有良好的污水处理效果和实用价值.
以寧夏不粘煤、山東肥煤和長治瘦煤為原料,通過炭化方法製備碳質生物載體,研究瞭炭化終溫、原料配比、粘結劑種類及煤焦油添加量對載體密度的影響.噹炭化終溫為450℃、原料配比為50∶30∶20、每100 g 原料煤中添加25 g 煤焦油時,製得最小密度為1.346 g/cm3的碳質生物載體.在自製流化床裝置上測得該載體的流化性能併與某商品活性炭對比研究後髮現,商品活性炭的臨界流化速度、全池流化速度和流化床層高度為10 cm時的流化速度分彆是製得碳質生物載體的1.57倍、1.83倍和1.77倍,錶明試驗製得的碳質載體具有較好的流化性能.又分彆以碳質載體和活性炭為載體利用生物流化床處理乙二醇廢水(稀釋後COD為3500 mg/L),經過碳質載體流化床的齣水COD最低可降至240 mg/L,對COD的去除率達到93.14％,錶明碳質載體具有良好的汙水處理效果和實用價值.
이저하불점매、산동비매화장치수매위원료,통과탄화방법제비탄질생물재체,연구료탄화종온、원료배비、점결제충류급매초유첨가량대재체밀도적영향.당탄화종온위450℃、원료배비위50∶30∶20、매100 g 원료매중첨가25 g 매초유시,제득최소밀도위1.346 g/cm3적탄질생물재체.재자제류화상장치상측득해재체적류화성능병여모상품활성탄대비연구후발현,상품활성탄적림계류화속도、전지류화속도화류화상층고도위10 cm시적류화속도분별시제득탄질생물재체적1.57배、1.83배화1.77배,표명시험제득적탄질재체구유교호적류화성능.우분별이탄질재체화활성탄위재체이용생물류화상처리을이순폐수(희석후COD위3500 mg/L),경과탄질재체류화상적출수COD최저가강지240 mg/L,대COD적거제솔체도93.14％,표명탄질재체구유량호적오수처리효과화실용개치.
Taking Ningxia non-caking coal,Shandong fat coal and Changzhi lean coal as raw materials,the authors studied preparation of biological carbonaceous carrier based upon carboni-zation method,and also studied effects of carrier density of final carbonization temperature,ma-terial ratio,bonding agent types,coal tar addition.The research showed that when the final car-bonization temperature was 450℃,the material ratio was 50∶30∶20 and adding 25 g coal tar per 100 g raw materials,the lowest density of the carbon-based biological carrier is 1.346 g/cm3 .Af-ter comparing the carrier fluidizing performance which was measured by self-designed fluidized bed equipment with a commercial activated carbon,the commercial activated carbon was 1 .5 7、1.83 and 1.77 times as many as self-made biological based carrier in critical fluidizing velocity, full tank fluidizing velocity and fluidizing velocity when the fluidizing bed was 10 cm height, which indicated that the self-made carbonaceous carrier has better fluidizing performance.In addi-tion,basing carbonaceous carrier and actived carbonaceous carrier,the researchers treated ethyl-ene glycol sewage by using biological fluidized bed (after attenuation,COD was 3500 mg/L).The results showed that after treatment,the carbonaceous carrier made COD minimum reduce to 240 mg/L and the COD removal rate reached 93.14% when using the biological fluidized bed, which indicated that the carbonaceous carrier has a good sewage treatment effect and practical value.
