Sorokina N. Local treatment of domestic wastewater in uncanalized areas

The thesis is devoted to the decision to a urgent problem of local biological purification of domestic wastewater from habitation in uncanalized areas with driving of quality of the treated waste water up to a level of the requirements to dump in reservoirs of fishing purpose. On the basis of the analysis of work and embodiment of plants of small productivity, used in home and foreign practice of local treatment of domestic wastewater the expediency of application flowing multistage anaerobic-aerobic biological purification of household waste water with use of communities of attached and free-swimming microorganisms is shown. There were received parameters of work of stages of anaerobic and aerobic biological purification, the law of nitrification and denitrification processes, the law of specific speed of oxidation of organic pollution in specific conditions of anaerobic-aerobic technology; the opportunity of reception of quality of treated waste water at level of the requirements of the specifications for dump of drains in fishing reservoirs is proved. The recommendations on the designing of plants of small productivity and their technical and economic efficiency are shown.