257 results about "Small town" patented technology

The invention discloses a small household garbage incineration treatment system and an incineration treatment method suitable for small towns. The system comprises a feeding device, an incineration device, a heat energy utilization device and a smoke purification device. The feeding device, the incineration device, the heat energy utilization device and the smoke purification device are connected in sequence. A smoke backflow zone is generated in the incineration process, household garbage is stably ignited, pyrolyzed and burnt completely, and smoke has enough standing time in a high temperature section, so that toxic substances such as dioxin are fully broken and decomposed; and steam generation equipment and air preheating equipment in the heat energy utilization device are integrated, and the equipment occupied area is reduced while heat energy recycling is achieved. Besides, smoke quenching in specific time can still be achieved when the system is under the condition of large working condition changes, so that resynthesis of the dioxin is reduced, and stable operation of the system is maintained.

The invention provides an activated sludge-biomembrane combined circulating flow denitrification and desophorization integrated sewage treatment device and a method. The integrated sewage treatment device consists of an improved CASS (Cyclic Activated Sludge System) reactor and a chemical dephosphorizing pond, wherein the inner ring of the improved CASS reactor is served as an anaerobic region, the outer ring is provided with an anoxic region and an aerobic region hung with biomembranes alternately, and the impact load resistance capability of the improved CASS reactor is increased through the flow state combined by a pushing flow and a mixed flow. The integrative sewage treatment device is only provided with an aeration device on the outer aerobic region, an anoxic region or even an anaerobic region is arranged after the aerobic region because the concentration of dissolved oxygen changes from high to low at the downstream of the aeration device, therefore, denitrifying bacteria can directly utilize nitration products to denitrify, and promote nitrification and denitrification to simultaneously generate in the device. The impact load resistance capability of the reactor can be strengthened through the biomembranes arranged alternately, a bidirectional sludge underwater plug-flow device is utilized to prevent the biomembranes to block circulating sludge, the simultaneous occurrence of nitrification and denitrification reactions in the reactor is beneficial to reducing aeration amount and energy consumption, and the volume of the reactor can be reduced because of dispensing with an anoxic pool and a secondary sedimentation tank, thereby saving construction cost and operation cost. The integrated sewage treatment device is suitable for sewage treatment in small towns with insufficient funds.