A multi-layer heavy metal filter device

A filtering device and heavy metal technology, which is applied in the direction of filtration separation, filtration treatment, filtration circuit, etc., can solve the problems of restricting sewage treatment efficiency and slow coagulation, and achieve good filtration effect, long service life and low heavy metal content.

Active Publication Date: 2019-06-14
广东顺德环境科学研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The flocculation and sedimentation treatment mainly adopts the dropping and settling of flocculants to form a stable removal effect. The purpose is to improve the overall treatment effect. However, in the flocculation and sedimentation process, in order to ensure the stability of the flocculation effect, sufficient flocculation time must be left
The coagulation during the settlement process is relatively slow, which from a certain point of view restricts the overall sewage treatment efficiency

Method used

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  • A multi-layer heavy metal filter device
  • A multi-layer heavy metal filter device
  • A multi-layer heavy metal filter device

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Experimental program
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Effect test

Embodiment 1

[0036] Such as Figure 1-4 As shown, the multi-layer heavy metal filtering device includes a primary filter grid 1, a secondary filter grid 3, an inorganic polymer filter plate 2 between the primary filter grid 1 and the secondary filter grid 3 . The polymer flocculation microporous plate 4 located at the lower end of the inorganic polymeric filter plate 2, the primary filter grid 1 and the secondary filter grid 3 are connected by thread grooves, and the polymer flocculation micropore 4 Located between the inorganic polymeric filter plate 2 and the secondary filter grid 3, the primary filter grid 1 includes a lower frame 1-1 with a stepped structure, a primary filter 1-2 made of stainless steel, Ring-shaped ring structure 1-4, the first-stage filter screen 1-2 is placed on the lower frame 1-1, and is screw-fixed by the ring 1-4, and the second-stage filter grid 3 includes The upper frame 3-1, the secondary filter screen 3-2 located in the center of the upper frame 3-1, the co...

Embodiment 2

[0045] Carry out simulation experiments with the multi-layer heavy metal filter device in embodiment 1 as filter device, dispose Zn respectively 2+ 、Cu 2 + , Pb 2+ 、Cd 2+ , Hg 2+ and Ni 2+ simulated heavy metal waste liquid. Flocculation test conditions: Take 500mL simulated heavy metal water samples respectively, adjust the pH value to 7-9, carry out flocculation filtration through the filter device, take the filtrate and measure the residual heavy metal ion concentration on the A-Analyst 300 atomic absorption spectrophotometer, and the treatment effect As described in Table 1:

[0046] Table 1 The polymer heavy metal flocculant of the present invention is to the removal effect of free heavy metal ions

[0047]

[0048] The simulated reaction to various heavy metal wastewater shows that the polymer heavy metal flocculant of the present invention has a good flocculation effect, has a good trapping effect on heavy metal ions, and has a treatment efficiency of o...

Embodiment 3

[0050] Carry out the simulation experiment with the multi-layer heavy metal filtering device in embodiment 1 as the filtering device, take commercially available ACPF, DTCR and TMT-18 as comparative examples, configure copper concentration as 120mg / L, COD is about 1000mg / L blue Color mixing simulates heavy metal waste liquid. Flocculation test conditions: take 500mL simulated heavy metal water samples, adjust the pH value to 7-9, add the medicament, use the time-variable speed six-way mixer to stir at 200-240r / min for 5min, and stir at 100-120r / min for 10min, Slowly stir again at 50-60r / min for 10min, let stand for 35min, filter the supernatant after sedimentation, take the filtrate and measure the residual heavy metal ion concentration on the A-Analyst 300 atomic absorption spectrophotometer; adjust the pH value to 7 -9, carry out flocculation filtration by filter device, get filtrate and measure residual heavy metal ion concentration on A-Analyst 300 type atomic absorption s...

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Abstract

The invention discloses a multilayer heavy metal filter device which comprises a primary filter grid net, a secondary filter grid net, an inorganic polymer filter board located between the primary filter grid net and the secondary filter grid net, and a polymeric flocculation micro-pore plate located at the lower end of the inorganic polymer filter board, wherein the primary filter grid net is connected with the secondary filter grid net through a thread groove; and the polymeric flocculation micro-pore plate is located between the inorganic polymer filter board and the secondary filter grid net. The multilayer heavy metal filter device is good in filter effect and high in heavy metal retention rate, the flocculation efficiency is improved, and meanwhile, the flocculation effect is ensured.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment equipment, and in particular relates to a multilayer heavy metal filtering device. Background technique [0002] In the past few years, the industrial capacity of the sewage treatment industry has undergone qualitative changes. This qualitative change is mainly due to two aspects. One is the rapid increase in the number of sewage treatment plants, and the other is the rapid increase in overall treatment capacity. There are more than 3,000 sewage treatment plants, and the amount of industrial wastewater discharged up to the standard was 54 billion tons in 2011, and will exceed 76 billion tons in 2012. Quantitative changes also lead to qualitative changes to a certain extent. [0003] By studying the development process, technical standards, governance level, and regulatory system of urban water affairs in the United States and other developed countries, it can be found that although my co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/52C02F1/56B01D36/02C02F101/20
CPCB01D36/02C02F1/001C02F1/5236C02F1/56C02F2101/20C02F2301/08
Inventor 杨林
Owner 广东顺德环境科学研究院有限公司
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