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Regeneration equipment for adsorbing heavy metals in water by using complex resin and process thereof

A technology of resin adsorption and regeneration equipment, applied in the fields of adsorption water/sewage treatment, water pollutants, water/sewage treatment, etc., can solve the problem of waste of regenerated acid consumption and high acid concentration, and achieve saving acid consumption, high heavy metal concentration, The effect of saving the amount of cleaning water

Pending Publication Date: 2021-10-01
钱中明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] (3) High acid concentration in the regenerated waste acid solution: wasting the amount of regenerated acid;

Method used

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  • Regeneration equipment for adsorbing heavy metals in water by using complex resin and process thereof
  • Regeneration equipment for adsorbing heavy metals in water by using complex resin and process thereof

Examples

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Effect test

Embodiment 1

[0044] Such as Figure 1-2 As shown, a regeneration equipment for heavy metals in complex resin adsorption water, wherein, the equipment for complex resin adsorption heavy metals in water includes a resin tank 1, the upper end of the resin tank 1 is provided with an upper water distributor 2, and the resin tank 1 The lower end is provided with a lower water distributor 3, the top of the lower water distributor 3 is filled with a resin layer 4, the top of the resin tank 1 is respectively connected to the first acid tank 6 and the second acid tank 7 through pipelines, and the bottom of the resin tank 1 is passed through The pipelines are respectively connected to the regenerating return bucket 5, the alkali bucket 8 and the heavy metal recovery bucket 9.

Embodiment 2

[0046] A regeneration process for heavy metals in complexed resin adsorption water, wherein the regeneration process comprises the following steps:

[0047] Backwashing, draining, primary acid suction, primary acid discharge, secondary acid suction, secondary acid discharge, acid cleaning, alkali suction, alkaline cleaning and forward washing before produced water.

[0048] Wherein, the regeneration process is specifically:

[0049] S1. Backwashing: the water regenerated back into the water bucket 5 enters the bottom of the resin tank 1 through the pipeline, and the solid matter intercepted on the resin is washed from bottom to top;

[0050] S2. Drainage: the water in the resin tank 1 is forcibly drained or left to drain for 5-15 minutes through compressed air of 0.1-0.3Mpa;

[0051] S3. One-time acid absorption: Take the acid in the first acid tank 6, the acid absorption amount is 1 to 3 times the amount of resin used, the acid liquid flows in the resin tank 1 as up-in and d...

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Abstract

The invention provides regeneration equipment for adsorbing heavy metals in water by complexing resin, which comprises a resin tank, an upper water distributor arranged at the upper end of the resin tank, a lower water distributor arranged at the lower end of the resin tank, a resin layer filled above the lower water distributor, and a first acid barrel and a second acid barrel respectively connected to the top of the resin tank through pipelines, and the bottom of the resin tank is respectively connected with a regeneration water-returning barrel, an alkali barrel and a heavy metal recycling barrel through pipelines. According to the regeneration process for adsorbing the heavy metals in the water by the complex resin, the cleaning water amount is saved, and compared with the traditional acid absorption and cleaning steps, the consumption of the cleaning water can be saved by 30-66%, the consumption of regenerated acid is saved, and the heavy metal concentration of the recovered liquid is greatly improved.

Description

technical field [0001] The invention relates to the technical field of reuse of heavy metal resources in water, in particular to regeneration equipment and a process for complexing resins to absorb heavy metals in water. Background technique [0002] At present, the recycling system of heavy metal resources in water is mainly based on complex resin adsorption of heavy metals in water and regeneration equipment, reverse osmosis membrane technology, nanofiltration membrane technology, etc. Reuse is the main reason why the reuse of heavy metal resources in water has not been widely used. Waste-producing units still use physicochemical dosing and precipitation as the main process for treating heavy metals in water. [0003] In recent years, the cost of sludge disposal has remained high, heavy metal resources have become increasingly scarce, and the reuse of heavy metal resources in water has received more attention, because it can not only reduce the demand for nickel and copper...

Claims

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Application Information

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IPC IPC(8): C02F1/28C02F101/20C02F101/22
CPCC02F1/285C02F2101/20C02F2101/22C02F2303/16
Inventor 钱中明
Owner 钱中明
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