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Water treatment system and method for removing humic acid in drinking water

A water treatment system and humic acid technology, applied in the field of water treatment, can solve the problems of increasing operating costs and water production costs, shortening the service life of ultrafiltration membranes, rising transmembrane pressure difference, etc. Bridge capability, reduced risk of passivation, reduced dosing effect

Pending Publication Date: 2019-06-14
WUHAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when ultrafiltration technology is used alone, due to membrane fouling, it will cause a decrease in flux and an increase in transmembrane pressure difference, shortening the service life of ultrafiltration membranes, increasing operating costs and water production costs, and limiting its development.

Method used

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  • Water treatment system and method for removing humic acid in drinking water

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Embodiment 1

[0057] like figure 1 As shown, this embodiment provides a water treatment system for removing humic acid in drinking water, the water treatment system includes: a chemical coagulation device, an electrocoagulation device and an ultrafiltration membrane separation device; wherein the chemical coagulation device includes Chemical coagulation tank 2, coagulant dosing unit 3 and stirring unit 4; the electrocoagulation device includes an electrocoagulation tank 6, an external power supply 9 and an electrode plate; the ultrafiltration membrane separation device includes a submerged ultrafiltration membrane pool 11 and an ultrafiltration membrane assembly 12; wherein, the coagulant dosing unit 3 is a dosing tube;

[0058] Wherein, the output end of the raw water delivery pipe 1 is inserted into the water inlet of the chemical coagulation tank 2, the coagulant dosing unit 3 is arranged on the upper part of the chemical coagulation tank 2, and the chemical coagulation tank 2 is provide...

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Abstract

The invention discloses a water treatment system and method for removing humic acid in drinking water. The water treatment system for removing the humic acid in the drinking water comprises a chemicalcoagulation device, an electric flocculation device and an ultrafiltration membrane separation device, wherein the chemical coagulation device communicates with the electric flocculation device, andthe electric flocculation device communicates with the ultrafiltration membrane separation device. According to the water treatment system and method for removing the humic acid in the drinking water,a chemical coagulation-electric flocculation coupling-ultrafiltration membrane separation technology is adopted to remove the humic acid in drinking water raw water, and the treated yield water can meet the requirement of Chinese (hygienic standard for drinking water) (GB5749-2006); and the technical structure is simple, the yield water quality is stable, the operating pressure loss of the ultrafiltration membrane separation device is small, the decay speed of membrane flux is low, and the membrane module backflushing frequency is low.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and more specifically relates to a water treatment system and a water treatment method for removing humic acid in drinking water. Background technique [0002] Humic acid (HA) is a kind of natural organic matter with different molecular sizes and structural compositions formed by the decomposition and transformation of animal and plant debris. It widely exists in natural water bodies, accounting for about 50% to 90% of the total organic matter in water, and its existence seriously affects the taste, smell and color of water bodies. Humic acid (HA) is a complex macromolecular organic substance. It contains various active functional groups such as carbonyl, carboxyl, alcoholic hydroxyl and phenolic hydroxyl in its molecule. It can adsorb toxic organic substances and heavy metal ions in water to form a stable chelation that is difficult to remove. Moreover, when HA is disinfected by chlorin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/06C02F101/30
Inventor 贺杏华张荣堂张静
Owner WUHAN POLYTECHNIC UNIVERSITY
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