Combined water purifying device and method

A water purification device and water purification technology, applied in the field of water treatment, can solve the problems of low effective utilization efficiency of ozone and insufficiently compact process, and achieve the effects of easy automation control, transformation and upgrading, easy cleaning, and prolonging service life.

Active Publication Date: 2014-05-28
广东中科华膜净水科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Invention patent CN101234834B discloses a pressure-type non-bubble film oxygenation system and method. The film-type non-bubble aeration oxygenator is used to oxygenate water, and then enters the activated sludge tank through a hydraulic distributor. This method only Involving exposure to air or oxygen, the membrane only acts as an aeration function, and the reaction tank and aeration tank are separated, and the process is not compact enough
This method can effectively remove other pollutants such as organic pollutants, peculiar smell, turbidity, bacteria, and heavy metals in water, but the invention connects ozone catalytic oxidation and ultrafiltration step by step, and the direct addition of ozone makes the effective utilization of ozone not high. Catalysts require additional interception and recovery steps, and the problem of linking up the two-step operation also needs to be properly resolved

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  • Combined water purifying device and method

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Effect test

Embodiment 1

[0047] Embodiment 1 The combined water purification device of the present invention

[0048] Such as figure 1 As shown, a combined water purification device includes a coagulation sedimentation system 1, an ozone generation and tail gas treatment system 2, a catalytic filtration system 3, a post-treatment water outlet system 4, and an air-water alternate operation control system 5; the coagulation sedimentation system 1 and the catalytic filtration system The system 3 is connected, and the catalytic filter system 3 includes a catalytic filter tank 31 and a membrane module 32 arranged in the catalytic filter tank 31, and the ozone generation and tail gas treatment system 2 is connected with the membrane module 32 in the catalytic filter tank 31, and then The treated effluent collection system 4 is connected to the catalytic filtration system 3, and the air-water alternate operation control system 5 is connected to the valves and instruments on the pipelines of each subsystem th...

Embodiment 2

[0064]Embodiment 2 The combined water purification method of the present invention

[0065] The combined water purification method of the present invention uses the above-mentioned combined water purification device to purify water, comprising the following steps, the raw water enters the coagulation sedimentation tank after being mixed with the coagulant, and after the coagulation and sedimentation treatment, the supernatant flows into the catalytic filter tank; The filter tank contains an ozone catalyst, the membrane module is submerged below the liquid level in the catalytic filter tank, and ozone is passed through the membrane module for bubble-free aeration; the organic pollutants in the water react with ozone under the action of the ozone catalyst, and are covered by the membrane module Retained in the catalytic filter tank; the purified water is filtered into the membrane module, and then enters the post-treatment effluent collection system, which is absorbed by activate...

Embodiment 3

[0070] Example 3 separate filter mode

[0071] In this example, a PVDF curtain-type hollow fiber ultrafiltration membrane module is used, which is installed in a catalytic filter pool, using the operation mode (1) separate filtration mode, and the coagulant is PAC (polyaluminum chloride) and A-PAM ( Anionic polyacrylamide flocculant) is put into the wastewater according to the mass ratio of 10:1, so that the concentration of coagulant in the wastewater is 20-100mg / L, no ozone catalyst is added, no ozone is exposed, of which P 1 0.2Mpa, t 1 for 20min. The concentration of suspended solids (SS) in water before treatment was 65 mg / L, and the removal rate of suspended solids (SS) in water after treatment was 92.7%, which is a good removal effect.

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Abstract

The invention relates to a combined water purifying device and method. The combined water purifying device comprises an ozone generating and exhaust treating system, a catalytic filter system, a post-treatment effluent collecting system and a gas-water alternate operation control system, wherein the ozone generating and exhaust treating system is connected to the catalytic filter system; and the gas-water alternate operation control system is sued for controlling the operation of the combined water purifying device. The combined water purifying device provided by the invention is compact in structure and small in floor area, and can be automatically controlled and upgraded. The combined water purifying method provided by the invention integrates ozone catalytic oxidation, bubbleless aeration and membrane filtration. Raw water is subjected to coagulating sedimentation and then flows into a catalytic filter tank; a membrane assembly is immersed below a liquid level; ozone is introduced into the membrane assembly to carry out bubbleless aeration; purified water is filtered and enters into the membrane assembly; and exhaust generated by the catalytic filter system enters into an exhaust breaking device to break ozone. The combined water purifying method provided by the invention can effectively treat relatively trace refractory organics in a water body, and deeply purifies micro-polluted water body.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to a combined water purification device and method. Background technique [0002] Since the 1960s, the quality of drinking water sources in many areas has gradually deteriorated. Micro-pollutants such as pesticides, herbicides, fungicides, disinfectants, antibiotics, hormones, algae toxins, and petroleum hydrocarbons in water bodies are low in content. It can produce a variety of refractory organic pollutants, which not only endanger human health, but also hinder the normal production of industry and agriculture. [0003] With the development of the times and the gradual deepening of people's awareness of the water environment, on the one hand, the water quality of water bodies continues to deteriorate, and on the other hand, the country's testing requirements and water quality standards for water bodies continue to improve. In the past, the testing indicators in drinking water qualit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F1/78C02F1/52C02F1/56C02F1/44
Inventor 何勇陈顺权叶育万陈静杜如虚
Owner 广东中科华膜净水科技有限公司
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