A method for manganese and iron removal by oxidation filtration of high ph source water

A source water, pre-oxidation technology, applied in the direction of chemical instruments and methods, filtration treatment, oxidized water/sewage treatment, etc., can solve the problems of poor pre-oxidation effect, chlorite and chlorate, easy to produce chroma, etc. , to achieve the effect of less dosage, enhanced water purification function, and good water quality

Inactive Publication Date: 2018-06-19
ANHUI UNIVERSITY OF ARCHITECTURE +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

But ClO 2 The pre-oxidation effect on organic matter in source water is poor, too much dosage is easy to produce color, and there may be problems such as chlorite and chlorate

Method used

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  • A method for manganese and iron removal by oxidation filtration of high ph source water
  • A method for manganese and iron removal by oxidation filtration of high ph source water

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Embodiment 1

[0023] 1. Materials

[0024] The methods used in this embodiment are all conventional methods known to those skilled in the art unless otherwise specified, and the materials such as reagents used, if not otherwise specified, are commercially available products, and meet the quality standards of medicaments used in water purification plants .

[0025] 2. Method

[0026] The method for manganese and iron removal by oxidation, filtration, and manganese removal of the high pH source water, the overall process flow is:

[0027] Source water → primary pumping station → distribution well → pre-oxidation tank → first reaction tank (coagulation) → high-density sedimentation tank → filter tank → clear water tank → secondary pumping station → user, the above process will be described in detail below .

[0028] 2.1 Determination of source water quality parameters

[0029] Including pH value, OC value (mg / L), Mn 2+ Content (mg / L), Fe 2+ Content (mg / L), the determination method all ad...

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Abstract

The invention discloses a high-pH source water oxidation-filtration-manganese removal-iron removal method which is suitable for treating source water with the pH value of greater than 8.5. The method comprises the following processing steps: source water-primary pumping station-distributing well-preoxidation tank-coagulant coagulation-high-density precipitation tank-filter tank-disinfection-clean water tank-secondary pumping station-user. At the primary pumping station, ClO2 is added to perform preoxidation; and in the preoxidation tank, KMnO4 is added to perform preoxidation. Compared with the prior art, the ClO2-KMnO4 sectionalized combined preoxidation method is adopted to effectively remove manganese and iron, reduce the chroma and odor and remove organic matters, algae and the like; and the preoxidation can be performed to control and reduce the generation of disinfection byproducts. Since the addition amount of the KMnO4 reagent is small, no activated carbon is needed for decolorization subsequently, and no addition reagent is needed for lowering the pH value of the source water.

Description

technical field [0001] The invention relates to the technical field of drinking water purification treatment process, in particular to a method for manganese and iron removal by oxidation filtration of high pH source water. Background technique [0002] At present, the manganese concentration in source water of lakes and reservoirs is common, especially in summer when the temperature is high. Usually due to factors such as algae growth caused by high water temperature, the pH value of source water is generally high. The manganese concentration in the source water of a certain reservoir in Hefei is usually 0.2-0.5mg / L in summer, and the extreme value reaches 0.77mg / L; the pH often reaches about 8.5-9.0, and the highest reaches 9.22. At present, there is no mature water purification treatment process for source water with high pH, ​​high ferromanganese, and organic matter pollution. There are many ways to remove manganese and iron from drinking water, and the natural aeratio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/04C02F101/20
CPCC02F1/001C02F1/50C02F1/5245C02F1/56C02F1/72C02F1/76C02F1/763C02F9/00C02F2001/007C02F2101/203C02F2101/206C02F2101/30C02F2209/06C02F2301/08C02F2303/02
Inventor 唐玉朝黄显怀黄明李卫华施微杨妍钱益群
Owner ANHUI UNIVERSITY OF ARCHITECTURE
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