Hydrogen sulfide and VOCs remove system using Fe-EDTA and Biofilter

摘要

PURPOSE: A system for H2S and VOCs control using Fe-EDTA and biofilter is provided, which uses a scrubber type reactor to increase the contact area of gas and liquid, the catalyst, and biofilter of multistage cartridge type. The system can save purchasing cost of liquid catalyst by spraying the recirculating liquid catalyst, and can be continuously operated by selecting the operating stage of cartridge filter. CONSTITUTION: The system comprises a primary removing part(100) provided with liquid catalyst device to remove hydrogen sulfide; a secondary removing part(200) provided with microorganism embedded biofilter of cartridge type to remove volatile organic compounds. The primary removing part(100) includes a mass flow controller(19), a bubble generator(16), a liquid catalyst storing and receiving tank(12), a dry air filter(14), a flow meter(18), a sprayer(17), a plurality of pall rings(11) to form a packing layer, a demister(15). The secondary removing part(200) includes a biofilter(20) that is composed of microorganism media with plurality of embedded microorganism and may be arranged into one, two or multi-stages having different microorganism respectively to remove VOCs, a supporter to support the biofilter, a pH controller(26), a cultivation medium storing and receiving tank(25) to store the cultivation medium according to the pH, a cultivation medium circulating pump(21), a temperature controller(24), and a fan(22).