Waste acid recovery apparatus

A technology of acid recovery and equipment, which is applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problem of inability to serve small and medium-sized enterprises by vehicle, waste acid recycling equipment occupying an area Problems such as large area and inability to expand functions have achieved the effect of improving processing effect, easy error checking, and reducing the amount of fresh acid used

Inactive Publication Date: 2016-03-16
钱中明
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional waste acid recycling equipment using short-bed technology has a diameter of at least 1.2m. After adding supporting equipment, it cannot serve small and medium-sized enterprises in a vehicle-mounted manner; the height of the resin bed is less than 0.6m, and only a single resin can be used. The function cannot be expanded; the resin tank is specially made of stainless steel or fiberglass, and the overall equipment is expensive; the minimum processing capacity is 4m 3 / Hr, when the processing capacity is larger, it is necessary to maintain the height of the resin bed and increase the surface area, resulting in a large area occupied by the waste acid recycling equipment; there are few models, and there is no corresponding equipment for enterprises with a small amount of waste acid production; automatic control valves At least 7 two-way automatic valves are designed, the control steps are quite complicated, and it is very inconvenient to use

Method used

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specific Embodiment approach 1

[0031] One of the procedures in the aluminum anode treatment process in the surface treatment industry is oxidation. The aluminum raw material is immersed in a 200-250g / L sulfuric acid tank, and the surface of the aluminum material is treated by using the sulfuric acid etching and oxidation ability before proceeding to the next procedure. After the first treatment, the aluminum of the aluminum material will dissolve into the sulfuric acid. When the concentration of aluminum ions is 7-10g / L, the bath needs to be replaced. Such as figure 2 As shown, the tank liquid to be replaced is passed through the present invention to separate the sulfuric acid from the aluminum ions, and the recovered acid can continue to be used after re-adding high-concentration sulfuric acid. In the process of use, the sulfuric acid oxidation tank is used as the waste acid tank, and the H 2 SO 4 Be 200g / L, AL is the waste acid liquid of 10g / L through the present invention, passes into appropriate amou...

specific Embodiment approach 2

[0032] Such as image 3 As shown, the electroplating industry generally uses nitric acid as the stripping solution, especially for stripping nickel metal, in order to obtain fast stripping when dealing with stripped products. In the process of actual production work, enterprises only require high processing capacity, and the requirements for both the concentration of recovered acid and the concentration of metal ions in discharged wastewater are not high. In the process of use, the nitric acid deplating tank is used as the waste acid tank, and the HNO 3 It is 340g / L, Ni is the waste acid liquid of 18g / L through the present invention, feeds appropriate amount of water in the present invention, HNO 3 264g / L, Ni is 12.8g / L recovery acid and then returns to the nitric acid strip tank, HNO 3 The waste water with 8g / L and 4.3g / L Ni will be discharged.

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Abstract

The invention discloses a waste acid recovery apparatus, which comprises a waste acid tank, a flow meter, a pressure gauge, an electric control cabinet, a manual valve, a transmission cable and at least two automatic valves, wherein the waste acid tank is connected with a waste acid inlet of a treatment tank sequentially by a waste acid pump and a first security filter, a water tank is connected with a water inlet of the treatment tank sequentially by a water pump and a second security filter, a recovered acid outlet of the treatment tank is connected with a recovered acid tank, a wastewater outlet of the treatment tank is connected with a wastewater tank, multiple treatment tanks with different sizes are provided, and a corresponding amount of waste acid treating resin is arranged in each model of treatment tank. The waste acid recovery apparatus disclosed by the invention can carry out effective recovery and regeneration on waste acids, the treatment amount of waste acids is large, and the recovery rate is high; and the apparatus is small in occupied land, more in model, less in investment cost, and less in used control parts, at least two three-way automatic valves can be used, the apparatus can serve to small and medium-sized enterprises in a vehicle-mounted mode, and the design of the apparatus can be adjusted according to the requirements of resource recovery of enterprises.

Description

technical field [0001] The invention relates to the field of industrial waste acid treatment, in particular to waste acid recovery equipment. Background technique [0002] Metal surface treatment industry, metal parts pickling industry, electroplating and other industries produce waste acid in the process of production and processing, especially in chemical industry, which will produce a large amount of waste acid, such as waste sulfuric acid, waste hydrochloric acid, waste nitric acid, waste phosphoric acid or mixed acid wait. If these waste acids are discharged directly, it will not only cause a lot of waste, but also bring great pressure to the ecological environment. Therefore, it is necessary to process the waste acid and recycle the waste acid to the workshop for reuse. [0003] The traditional waste acid recycling equipment using short-bed technology has a diameter of at least 1.2m. After adding supporting equipment, it cannot serve small and medium-sized enterprise...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04
Inventor 钱中明
Owner 钱中明
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