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Microfiltration water inlet ultrafine powder activated carbon pretreatment method

A powder activated carbon and pretreatment technology, applied in the field of water treatment, can solve the problem of low removal rate of organic matter in microfiltration, and achieve the effect of increased removal rate

Inactive Publication Date: 2014-05-21
XUCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to overcome the deficiencies in the above-mentioned prior art, the present invention provides a pretreatment method for microfiltration influent, which solves the problem of low removal rate of microfiltration organic matter

Method used

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  • Microfiltration water inlet ultrafine powder activated carbon pretreatment method
  • Microfiltration water inlet ultrafine powder activated carbon pretreatment method
  • Microfiltration water inlet ultrafine powder activated carbon pretreatment method

Examples

Experimental program
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Effect test

Embodiment 1

[0022] A flat ceramic membrane with a pore size of 0.2 μm and a diameter of 47 mm (Whatman, Germany) was used for the experiment, and the feed was fed at room temperature (20-25°C). The experimental procedure is as described above. Inlet water is mixed with 1.5 μm ultrafine powdered activated carbon from activated carbon storage tank 3 in tubular reactor 4 through feed pump 2, the mixing time is 30s, 10s and 2.4s, and the addition of ultrafine powdered carbon is 5mg / L, Then add 3.5mg-Al / L flocculant polyaluminum, after mixing with a static mixer, enter the ceramic membrane dead-end filter to obtain product water, analyze the TOC content of raw water and product water, and the results are as follows figure 2 As shown, the best mixing time is 10s, at this time the average TOC is about 3mg / L, and the removal rate is about 73%.

Embodiment 2

[0024] Such as image 3 As shown, a flat ceramic membrane with a pore size of 0.1 μm and a diameter of 47 mm (Whatman, Germany) was used for the experiment, and the material was fed at room temperature (20-25 ° C). The TOC value of raw water is 1.55mg / L. The experiment was first carried out under the condition that only flocculant was used. The raw water was mixed with 3.5mg-Al / L flocculant polyaluminum through static mixer 6 without adding activated carbon, and then entered into the filter to obtain produced water. The average value of TOC was measured The removal rate of 0.77mg / L is about 50%. Carry out another experiment afterwards, feed water is mixed in tubular reactor through feed pump 2 and the 1.5 μ m ultrafine powder activated carbon from activated carbon storage tank 3, and mixing time is 10s, and the add-on of ultrafine powder carbon is 5mg / L, Then add 3.5mg-Al / L flocculant polyaluminum, after mixing by static mixer 6, enter ceramic membrane dead-end filter, obtai...

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Abstract

The invention discloses a microfiltration water inlet ultrafine powder activated carbon pretreatment method which comprises the following steps: mixing inflow water in a feeding tank (1) with 1.5um ultrafine powder activated carbon from an activated carbon storage tank (3) in a tubular reactor (4) for 10 seconds through a feeding pump (2), and adding a flocculating agent polyaluminium chloride from a flocculating agent tank (5); mixing through a static mixer (6), entering a ceramic film dead-end filter, and obtaining contributing water, wherein the addition amount of the ultrafine powder carbon is 5mg / L, and the addition amount of the polyaluminium chloride is 3.5mg-Al / L; the flow of the inflow water is kept to be 60L / (m2.h). After the microfiltration inflow water is pretreated by adopting the method, the removal rate of TOC is 82 percent, and after the inflow water treated by powdered activated carbon treatment is subjected to microfiltration, the removal rate of TOC is 50 percent. The removal rate of TOC in the inflow water subjected to ultrafine powder activated carbon pretreatment is obviously increased.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to an ultrafine powder activated carbon pretreatment method for microfiltration influent. Background technique [0002] Water is necessary for life, without water there is no life. The water crisis has been listed as one of the most severe challenges facing mankind in the next 10 years. The total amount of water resources in my country is insufficient, and it is a water-scarce country. With the growth of our population and the acceleration of industrialization and urbanization, water pollution is becoming more and more serious, and the deterioration of water pollution has made our country's water shortage worse. The treatment methods of general sewage can be roughly divided into physical method, chemical method, physicochemical method and biological method. With the advancement of science and technology, membrane technology has gradually become a new water treatment techno...

Claims

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Application Information

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IPC IPC(8): C02F9/04
Inventor 徐静莉
Owner XUCHANG UNIV
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