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Application of Activated Carbon Tn The Treatment of Groundwater

Views: 2     Author: Site Editor     Publish Time: 2023-03-19      Origin: Site


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When groundwater is used as water source, the content of suspended solids in the water is very small, so the establishment of pretreatment is generally not considered. If sand is contained, sand removal equipment should be considered.

When the water contains inactive silicon, and the boiler steam quality cannot meet the requirements after accounting, it should be removed by touch coagulation, coal-based activated carbon filtration or coagulation, clarification, and filtration.

When the content of iron and manganese in groundwater is high, the method of removing iron and manganese should be adopted. When the bicarbonate iron is less than 20mg/L and the pH is greater than or equal to 5.5, the aeration-natural manganese sand filtration method can be used to remove iron. If the salt type iron is less than 4mg/L, the iron can be removed by aeration-quartz sand filtration, and the pH after aeration can be made >7 (if necessary, the water can be alkalized to pH>7).

Application of activated carbon in surface water treatment:

Coagulation, clarification and activated carbon filtration should be used for surface water pretreatment.When the content of suspended solids in the water is small, touch coagulation and filtration can be used.

If there is a seasonal sand content or a high suspended solids content in the water, which affects the coagulation clarification, it is necessary to set up pre-sedimentation equipment or add a reservoir to reduce the content of mud and sand in the water supply system.

If the bicarbonate hardness or silicate content in the raw water is relatively large, or the raw water is polluted to comprehensively control and improve the water quality, after technical and economic comparison, joint treatment with lime or other chemicals can be considered. For example, when the content of colloidal silicon in the water is high (more than 0.5-0.6 mg/L), the silicon content in the boiler steam may exceed the budget, and magnesium calcification agent can be used to remove some silicic acid compounds, and magnesium agent can be used to remove silicon. Afterwards, about 40% of silicon compounds can be removed from the water, and the HSiO content in the effluent can be reduced to 1 mg/L.

When the organic matter content of the raw water is high, chlorination, coagulation, clarification, and coal-based activated carbon filtration treatment processes can be used. It can meet the requirements of the ion exchange process for the water quality of the bed. If it is necessary to further remove the organic matter in the water, it is possible to consider adding a coal-based activated carbon filter bed or an adsorption resin tank to the system.

Activated carbon bed can not only remove some organic matter, but also remove free chlorine in water, and is used more in advanced pretreatment.

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