BIOTRICKLING FILTER BED FOR EXHAUST GAS TREATMENT AND TREATMENT METHOD USING THE SAME

摘要

A biotrickling filter bed for exhaust gas treatment comprises an exhaust gas inlet (1), packing layers (2), spray tubes (13), a spray liquid storage tank (3) and an exhaust gas outlet (5). After the exhaust gas passes the exhaust gas inlet (1) and then a first packing layer (2), the flow direction of the exhaust gas is changed at the bottom of the first packing layer (2) such that the exhaust gas passes a second packing layer (2) in a flow direction opposite to that in the first packing layer (2), resulting in a crossflow configuration. Two different flow directions of the exhaust gas compose a crossflow unit. The biotrickling filter bed is composed of two or more crossflow units. An exhaust gas treatment method using the biotrickling filter bed comprises: feeding the exhaust gas into the biotrickling filter bed through the exhaust gas inlet (1); cleaning it by the crossflow packing layers (2); passing the cleaned exhaust gas through a demister (6) and discharging it from the biotrickling filter bed; spraying on the packing layers (2) using spray heads on the top of the biotrickling filter bed; and flushing the packing layers (2) using flush pipes (8) in the packing layers (2).