Aerators are currently the longest used aeration devices in wastewater treatment processes. How to deal with the situation of pipeline backflow if a suspended chain aerator is used for water regulation? If the sludge returns from the aeration disc pipeline, first discharge the water from the hydrolysis acidification tank, and then turn on the centrifugal fan to discharge the sludge from the pipeline. Before announcing irrigation with the disc type microporous aerator, a natural ventilation test should be conducted. After the centrifugal fan is operated before natural ventilation, 1/4-1/3 of the outdoor exhaust volume should be sent into the biochemical microporous aeration soft pipeline tank, and the welding and assembly of all nodes in the pipeline should be checked. The quality, disc type microporous aerator, and microporous aeration hose should not leak. If it is not easy to check, use soap solution to check. Any problems discovered should be immediately repaired as required.
In the planning and operation of wastewater treatment aeration systems, there are many factors that can impair the oxygen effect of the aeration system. In addition to the mechanical filter itself, the relative density of the disc type microporous aerator reflects the relative density of the suspended chain aerator in the hydrolysis acidification tank, which is also one of the important factors directly related to the oxygenation effect of the aeration system.
Most sewage treatment plants in the world generally use a layout of 0.3-0.5m2/suspended chain aerators. Only foreign sewage treatment plants, such as some of R's sewage treatment plants, use high-density aeration methods. However, there is limited scientific research on the impact of explosion relative density on oxygenation in the world. The planning of the aeration system in sewage treatment plants has important reference significance.
Generally speaking, when considering the placement of suspended chain aerators, the influence of the relative density of disc type microporous aerators on oxygenation should be taken into account. Whether it is the number of columns of fixed suspension chain aerators or the number of aerators per row, the oxygenation effect of the aeration system will increase with the increase of explosive gas density.
Without considering the installation method of the suspension chain aerator, the oxygenation effect of the aeration system shows an improvement trend with the increase of explosion density, but there are fluctuations throughout the process, indicating that the installation method of the suspension chain aerator is a porous mechanical filter. Uniformity of placement, etc Affects the oxygenation effect of the aeration system.
