Water treatment method

A water treatment and ozone treatment technology, applied in the field of water treatment, can solve the problems of low specific surface area and isoelectric point, small porosity of quartz sand, low pollutant removal rate, etc., and achieve low charge density, small molecular weight, and contact opportunities increased effect

Active Publication Date: 2020-09-04
上海东洛净化科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, unmodified quartz sand itself has small porosity, low specific surface area and low isoelectric point, resulting in low removal rate of pollutants, such as tiny particles, suspended solids and organic pollutants.

Method used

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Examples

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Comparison scheme
Effect test

Embodiment 1

[0041] The water treatment method includes the following steps:

[0042] Step Ⅰ: Pass the raw water into The pre-ozonation column, 1.8 mg of ozone per liter of raw water is introduced, the residence time is 5 minutes, the water is discharged, and the pre-ozonated raw water is obtained;

[0043] Step II: Pass the pre-ozonated raw water into the coagulation tank, add 25 mg of polyaluminum chloride per liter of raw water, stir at 300 r / min for 30 seconds, 150 r / min for 3 minutes, and 50 r / min for 15 minutes. 30 minutes, stand and settle for 30 minutes, and water is discharged to obtain the raw water treated by coagulation and sedimentation;

[0044] Step Ⅲ: Pass the raw water treated by coagulation and sedimentation into the 2.5mg of ozone per liter of raw water was introduced into the post-ozone column, the residence time was 10 minutes, and the water was discharged to obtain post-ozone-treated raw water;

[0045] Step IV: Pass the post-ozonated raw water into the activated...

Embodiment 2

[0048] The water treatment method includes the following steps:

[0049] Step Ⅰ: Pass the raw water into The pre-ozonation column, 1.8 mg of ozone per liter of raw water is introduced, the residence time is 5 minutes, the water is discharged, and the pre-ozonated raw water is obtained;

[0050] Step II: Pass the pre-ozonated raw water into the coagulation tank, add 25 mg of polyaluminum chloride per liter of raw water, stir at 300 r / min for 30 seconds, 150 r / min for 3 minutes, and 50 r / min for 15 minutes. 30 minutes, stand and settle for 30 minutes, and water is discharged to obtain the raw water treated by coagulation and sedimentation;

[0051] Step Ⅲ: Pass the raw water treated by coagulation and sedimentation into the 2.5mg of ozone per liter of raw water was introduced into the post-ozone column, the residence time was 10 minutes, and the water was discharged to obtain post-ozone-treated raw water;

[0052] Step IV: Pass the post-ozonated raw water into the activated...

Embodiment 3

[0056] The water treatment method includes the following steps:

[0057] Step Ⅰ: Pass the raw water into The pre-ozonation column, 1.8 mg of ozone per liter of raw water is introduced, the residence time is 5 minutes, the water is discharged, and the pre-ozonated raw water is obtained;

[0058] Step II: Pass the pre-ozonated raw water into the coagulation tank, add 25 mg of polyaluminum chloride per liter of raw water, stir at 300 r / min for 30 seconds, 150 r / min for 3 minutes, and 50 r / min for 15 minutes. 30 minutes, stand and settle for 30 minutes, and water is discharged to obtain the raw water treated by coagulation and sedimentation;

[0059] Step Ⅲ: Pass the raw water treated by coagulation and sedimentation into the 2.5mg of ozone per liter of raw water was introduced into the post-ozone column, the residence time was 10 minutes, and the water was discharged to obtain post-ozone-treated raw water;

[0060] Step IV: Pass the post-ozonated raw water into the activated...

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Abstract

The invention discloses a water treatment method. The method comprises the following steps: (1) introducing raw water into a pre-ozone column for pre-ozone treatment; (2) introducing the raw water subjected to pre-ozonation treatment in the step (1) into a coagulating basin for coagulating sedimentation treatment; (3) introducing the raw water subjected to coagulating sedimentation treatment in the step (2) into a post-ozone column for post-ozone treatment; (4) introducing the raw water subjected to post-ozone treatment in the step (3) into a filter column which is sequentially filled with anactivated carbon filter material, a hydroxyapatite filter material and quartz sand from an inlet to an outlet, and carrying out carbon sand filtration treatment; (5) enabling the raw water filtered bythe carbon sand in the step (4) to pass through a filter membrane to obtain treated water, wherein the quartz sand is modified quartz sand. The water treatment method provided by the invention can effectively remove tiny particles and suspended matters in the raw water, and the transparency, turbidity, organic pollutants and bacterium content of the water body are effectively reduced.

Description

technical field [0001] The present invention relates to the technical field of water treatment, in particular to a water treatment method. Background technique [0002] The water extracted from the water source is sent to the user's home after coagulation, sedimentation, filtration and disinfection in the water plant and then sent to the user's home. The polymerized aluminum trichloride flocculant and purifying agent commonly used in water coagulation and pre-chlorination disinfection treatment Free residual chlorine, etc. generated later, the tap water preparation process, the aging water pipeline network and the uncleaned water tank inevitably cause the "secondary pollution" of tap water, so the tap water sent to the user's home cannot be directly consumed. Yes, usually people just boil the boiled water and drink it directly, but boiling the water is not only troublesome, but also only plays the role of disinfection and sterilization, and cannot eliminate heavy metals and ...

Claims

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Application Information

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IPC IPC(8): C02F9/04B01J20/24B01J20/30C02F1/28C02F101/30
CPCC02F9/00C02F1/288B01J20/103B01J20/0255B01J20/0288B01J20/0281B01J20/0237B01J20/0229B01J20/22B01J20/24C02F1/78C02F1/44C02F1/5236C02F1/56C02F1/001C02F2101/30C02F2301/08
Inventor 闵桂青
Owner 上海东洛净化科技有限公司
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