Experimental Study Integrated Purification Tank Farmhouse Sewage Treatment

With the accelerated urbanization in China，the rapid development of the ruraleconomy and the improvement of the living standards of farmers, the "FarmFun"industry obtained actively development. As one of the projects of rural leisuretravel", Farm Fun" tourism sets the wild outing, leisure, experience crafts and taste offarm cuisine in one of a new kind of tourism activities to attract urban residents tofarm tourism. It brought not only economic beneifts for the local tourism industry, butalso serious effects on the local ecological environment.The scattered layout of "FarmFun" lead to the diiffcuties of collecting and treating sewage. Faced with this grimrural issues, there is an urgent need for research and development for thecharacteristics of "Farm Fun" sewage treatment technology for the new rural.In this study,"Farm Fun" sewage is used in the experiment of investigating aintegrated puriifcation tank.Due to the considerable plants and animals oil content in"Farm Fun" sewage, separate the oil in sewage before they enter the device. The useof oil separation tank brought huge removal of animal and vegetable oils in farmhousesewage, in hot summer the removal rate can reach76%and64%in the winter.In the study, we selected the ifller mixed by three-dimensional elastic filler, combinationpacking and aqua tendril ecological base as aerobic microbial carrier of the integratedpuriifcation tank anaerobic and aerobic zones.The removal rate of CODcr and SS ofmixed ifller in an anaerobic bio-iflm were30.0%，60.0%,respectively.And under thebest hydraulic loading0.25-0.3m3/(m2.h) conditions, the removal rate of CODcr andSS of mixed filler were up to87.5%，95%,respectively.The results of the study different aeration rate play a role in the effect on aerobicand sediment processing unit dissolved oxygen shows that the best aerobic zoneaeration rate range from0.25m3/h to0.35m3/h，when the amount of aeration are lessthan0.25m3/h，the dissolved oxygen concentration in the precipitation zone will beless than2mg/L which will obviously have a negative impact on water quality. In alower amount of aeration0.25m3/h，the removal rate of CODcr，NH3-N, SS, animaland vegetable oils of aerobic water were86.6%，86.1%，87.6%and90.7%，respectively，and which were discharge standards.After determing the integrated puriifcation tank operating conditions parameters,then to make it run, analysis the removal rate of the various pollutants, the averageremoval rate of the ifnal effluent CODcr,NH3-N,SS,animal and vegetable oils were87.0%，85.5%，91.3%and91.5%,respectively. Various pollutants in the water can reachthe three emission standard of The urban sewage treatment plant pollutant dischargestandards (GB18918-2002).