The advantages and disadvantages of membrane absorption method are briefly described.

1 Membrane-based absorption method: It can be used for occasions with high waste gas concentration (above 50g/m? )。 Absorbents are readily available. It can adapt to the fluctuation of exhaust gas flow and concentration. It can absorb polymerizable organic compounds. It is not easy to catch fire and does not need special safety measures. If there is existing wastewater treatment equipment, it is more convenient to use water as absorbent.

2. Disadvantages of membrane-based absorption method: the investment cost is generally high, and the operating cost of circulating operation with absorbent is also high. If the organic matter in the waste gas is not a single component, it is difficult to recover or many separation devices must be added. It may also produce waste water and cause secondary pollution. If the solvent is recovered by absorption method, some compensation can be obtained, but the investment of the corresponding recovery device must be increased.