CAJ | 학술논문

利用牛粪生产沼气，并将副产物有效利用是处理牛粪污的有效途径，为提高牛粪厌氧发酵的产气效率和副产物的利用率，整体工艺采用牛粪发酵前固液分离，固体进行好氧发酵回填牛卧床，分离液进行厌氧-好氧发酵，厌氧发酵产生沼气为系统增温，最后液体通过人工湿地处理达标排放。结果表明：对牛粪进行发酵前固液分离，降低了物料的粘度，利于微生物的传质，可以取得较好的产气效果，沼气通过沼气燃烧炉转化为热能为系统增温降低了其他能源的供给，同时湿地的利用也有效地改善了养牛场周边环境，为牛粪污生产沼气工程提供新思路。
이용우분생산소기，병장부산물유효이용시처리우분오적유효도경，위제고우분염양발효적산기효솔화부산물적이용솔，정체공예채용우분발효전고액분리，고체진행호양발효회전우와상，분리액진행염양-호양발효，염양발효산생소기위계통증온，최후액체통과인공습지처리체표배방。결과표명：대우분진행발효전고액분리，강저료물료적점도，리우미생물적전질，가이취득교호적산기효과，소기통과소기연소로전화위열능위계통증온강저료기타능원적공급，동시습지적이용야유효지개선료양우장주변배경，위우분오생산소기공정제공신사로。
It is an effective way to treat cow manure by use of it to product biogas and utilization of its byproducts. In order to improve the biogas production efficiency of anaerobic fermentation of the dairy manure and the utilization rate of the byproducts, during the whole process, cow manure was separated by solid-liquid separator before fermentation. The solid was fermented in an aerobic way and then filled back to the cattle beds. The separated liquid was fermented in an anaerobic-aerobic way. Through anaerobic fermentation, biogas was produced and the system was warmed. Finally, the liquid went through artificial wetland for treatment and then discharged in compliance with the discharge standards. The results indicated that the pretreatment of dairy manure by solid-liquid separation before fermentation reduced viscosity of the materials and favored mass transfer of the microorganism, with good biogas production effects. Through biogas combustion furnace, the biogas was converted to heat and therefore the system was warmed and supply of other energies was reduced accordingly. Moreover, effective use of the artificial wetland also improved the environment surrounding the cattle farm, providing a new idea for biogas production engineering by use of cow manure.