Treatment method of landfill leachate

[0074] This embodiment deals with leachate from a hazardous waste landfill. After testing, the water quality of the leachate from the hazardous waste landfill is shown in Table 2 below.

[0075] Table 2: Water quality of leachate from a hazardous waste landfill (unit: mg / L, except pH value)

[0076]

[0077] The processing method of the hazardous waste landfill leachate of the present embodiment comprises the following steps:

[0078] Add 30mg of flocculant PAC and 10mg of coagulant aid PAM to 1L of hazardous waste landfill leachate, stir and stand to obtain a mud-water mixture, and separate mud-water by pressure filtration to obtain the first treatment liquid and flocculated sludge.

[0079] Add sulfuric acid to the first treatment solution to a pH value of 2.15, then add 80 mg of 30% H 2 o 2 and 40mg of FeSO 4 , stirred evenly, and the reaction time was 30 minutes. After filtering, the second treatment liquid and the first sedimentation sludge were obtained. The measur

[0087] This embodiment deals with the leachate of a hazardous waste landfill. After testing, the water quality of the leachate of the hazardous waste landfill is shown in Table 3 below.

[0088] Table 3: Water quality of leachate from a hazardous waste landfill (unit: mg / L, except pH value)

[0089]

[0090] The processing method of the hazardous waste landfill leachate of the present embodiment comprises the following steps:

[0091] Add 30mg of flocculant PAC and 10mg of coagulant aid PAM to 1L of hazardous waste landfill leachate, stir and stand to obtain a mud-water mixture, and separate mud-water by pressure filtration to obtain the first treatment liquid and flocculated sludge.

[0092] Add sulfuric acid to the first treatment solution to a pH value of 2.3, then add 80 mg of 30% H 2 o 2 and 40mg of FeSO 4 , stirred evenly, and the reaction time was 30 minutes. After filtering, the second treatment liquid and the first sedimentation sludge were obtained. The measure

[0100] This embodiment deals with leachate from a hazardous waste landfill. After testing, the water quality of the leachate from the hazardous waste landfill is shown in Table 4 below.

[0101] Table 4: Water quality of leachate of a hazardous waste landfill (unit: mg / L, except pH value)

[0102]

[0103] The processing method of the hazardous waste landfill leachate of the present embodiment comprises the following steps:

[0104] Add 30mg of flocculant PAC and 10mg of coagulant aid PAM to 1L of hazardous waste landfill leachate, stir and stand to obtain a mud-water mixture, and separate mud-water by pressure filtration to obtain the first treatment liquid and flocculated sludge.

[0105] Add sulfuric acid to the first treatment solution to a pH value of 2.65, then add 80 mg of 30% H 2 o 2 and 40mg of FeSO 4 , stirred evenly, and the reaction time was 30 minutes. After filtering, the second treatment liquid and the first sedimentation sludge were obtained. The COD valu