| 英文摘要 |
The empty plastic pesticide bottles used by farmers have no where to go now, which may result in environmental hazards due to abandonment of empty bottles at will. To solve the problems of disposing waste pesticide containers, Bo Jing Co. actively establish the waste pesticide container recycling field with counseling of Environmental Protection Administration as well as cooperate with Foundation of Taiwan Industry Service to conduct on field tests aiming at odor/VOCs to the expectation of establishing pollution prevention treatment methods as appropriate.
The effects of different prevention treatment processes under this projects: (1) Waste gas through into water wash and activated carbon absorption, the input of THC is 774ppm while the output is 38ppm, with processing effect around 50%; (2) Waste gas through into the washing equipment, the estimate of waste gas THC at inlet >500ppm based on the value tested in afternoon since the instrument was malfunctioned in morning and 519ppm at outlet. The THC value is similar before and after washing process; (3) Waste gas through into activated carbon absorption, the THC elimination rate is around 65.2~73.7% while the odor discharged in the pipe is between 55~412, which is far below the statutory standard 1,000.
Aiming at the introduction of activated carbon equipment, this project suggests that the replacement frequency of activated carbon should follow the principle of stable operation and small variation on processed concentration. And the operation of replacement frequency considers by the safety coefficient 1.5. It is estimated that 50kg activated carbon may process 40 tons of air pollutant generated from waste pesticide container. In term of environmental regulations compliance, the water pollution prevention procedures of said plant have been approved and the waste water discharged to Fangyuan Industrial Park is satisfactory to the control standards. In addition, the test values of 21VOCs in drainage channel are all ND. The perimeter odor at the windward position of plant is 16 while 16 and 21 at the downwind position, which are far below the statutory standard 50. There are 18 materials detected as testing the perimeter 60VOCs with test value between 0.0007~0.059 mg/m3 and far below the statutory standard 0.0046~99 mg/m3.
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