US 12,011,689 B2
System and method for processing industrial waste gas based on combination of photoelectrocatalysis and biotrickling filter
Qi Xu, Jiangsu (CN); Yue Li, Jiangsu (CN); Bairen Yang, Jiangsu (CN); Jia Gao, Jiangsu (CN); and Qingqing Shang, Jiangsu (CN)
Assigned to YANCHENG INSTITUTE OF TECHNOLOGY, Yancheng (CN)
Filed by YANCHENG INSTITUTE OF TECHNOLOGY, Jiangsu (CN)
Filed on Jan. 19, 2021, as Appl. No. 17/151,920.
Claims priority of application No. 202010348433.1 (CN), filed on Apr. 28, 2020.
Prior Publication US 2021/0331116 A1, Oct. 28, 2021
Int. Cl. B01D 53/85 (2006.01); B01D 53/00 (2006.01); B01D 53/32 (2006.01); B01D 53/86 (2006.01)
CPC B01D 53/85 (2013.01) [B01D 53/007 (2013.01); B01D 53/326 (2013.01); B01D 53/8687 (2013.01); B01D 2251/95 (2013.01); B01D 2255/40 (2013.01); B01D 2255/802 (2013.01); B01D 2257/708 (2013.01); B01D 2258/02 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A system for processing industrial waste gas based on a combination of photoelectrocatalysis and a biotrickling filter, comprising:
an industrial waste gas simulation generator;
a photoelectrocatalytic reactor; and
at least one biotrickling filter;
wherein the industrial waste gas simulation generator, the photoelectrocatalytic reactor generator and the at least one biotrickling filter are communicated through pipelines; the industrial waste gas simulation generator comprises a first air pump, a stripping tower, a buffer tank and a mixing tank communicated via pipelines; a first flowmeter is provided on a pipeline between the first air pump and the stripping tower; an upper end of the stripping tower is provided with a liquid-feeding pipe equipped with a first valve; a second valve is provided on an upper end of the buffer tank, and a third valve is provided on an upper end of the mixing tank; one side of a lower portion of the buffer tank is connected to a waste water discharge pipe equipped with a fourth valve; the other side of the lower portion of the buffer tank is sequentially connected to a second flowmeter and a second pump via pipelines;
the photoelectrocatalytic reactor comprises a housing; a first plate-type catalyst, a plasma generator, a second plate-type catalyst and an ultraviolet lamp are provided in the housing in sequence along a horizontal direction; the first plate-type catalyst and the second plate-type catalyst are made by coating and drying a catalyst on a metal mesh plate; and
the at least one biotrickling filter comprises a packing column and a circulating liquid storage tank arranged in sequence from top to bottom; the packing column and the circulating liquid storage tank are connected via a pipeline provided with a fifth valve; an upper end of the packing column is provided with a gas-discharging port equipped with a sixth valve; and a filler is arranged packed inside the packing column; a lower end of the packing column is communicated to a third flowmeter, a seventh valve and the photoelectrocatalytic reactor in sequence via pipelines; a position where the lower end of the packing column communicates with the photoelectrocatalytic reactor is close to a lower end of the ultraviolet lamp; an intake sampling port is arranged on a pipeline between the packing column and the third flowmeter; a liquid-feeding port is arranged on an upper end of the circulating liquid storage tank; one side of a lower portion of the circulating liquid storage tank is provided with a drain pipe equipped with an eighth valve; the other side of the lower portion of the circulating liquid storage tank is communicated to a micro water pump and a fourth flowmeter through a connecting pipe; an end of the connecting pipe far away from the circulating liquid storage tank penetrates a side wall of the packing column and extends into the packing column; and the end of the connecting pipe extending into the packing column is provided with a spray nozzle; and the side wall of the packing column between the spray nozzle and the gas-discharging port is provided with an outlet sampling pipe.