Waste Acid Oil Removal, COD Removal, And Decolorization Resource Regeneration

1. Characteristics of domestic waste acid

#Waste acid resource utilization # Waste acid decolorizing acid is widely used as a cleaning agent, corrosive agent, or catalyst in industries such as metallurgy, machinery, and chemical engineering. When impurities in the acid reach a certain concentration, it cannot continue to be used in production and becomes waste acid.

Waste acid has a large production capacity and hazardous characteristics such as corrosiveness, toxicity, and reactivity, which pose a great threat to the environment. Improper disposal can cause serious resource waste.

2. Current situation of waste acid treatment

At present, waste acid treatment processes include neutralization method, diffusion dialysis method, evaporation method, spray roasting method and adsorption method. The neutralization method has a simple process and low equipment investment, but it is prone to producing a large amount of heavy metal waste residue, exceeding the standard for effluent, consuming a large amount of alkali, and cannot be utilized as a resource; The evaporation method has a simple process, and the separated crystals can be used as raw materials. However, the equipment is prone to corrosion and requires high anti-corrosion requirements. At the same time, it has high energy consumption, multiple equipment, and complex operation; The spray roasting method can recover free acid and combined acid from waste acid at the same time, but the investment is large, the floor area is large, and the equipment has high corrosion resistance requirements, large energy consumption, complex process, and heavy workload of equipment maintenance and operation; The diffusion dialysis method can achieve the separation of acid and metal impurities, with simple operation and low energy consumption, but with small processing capacity, large equipment investment, and low acid recovery concentration.

Resin adsorbents have a large specific surface area, controllable microporous structure, and good thermal stability. They have been widely used in fields such as wastewater and exhaust gas treatment, which can solve environmental problems and recover resources. Therefore, developing efficient adsorbents for waste acid treatment is an important aspect of achieving waste acid treatment and resource utilization.

3. Core advantages of Haipu waste acid treatment system

(1) By functionalizing polymer based nanoadsorbents, special functional groups are bonded to the inner and outer surfaces of the polymer, exhibiting excellent selectivity towards acid components;

(2) By suspending double bonds in the adsorbent matrix and conducting crosslinking reactions, the crosslinking degree of the adsorbent polymer matrix is further improved, and its expansion rate in acidic environments is controlled to ensure the mechanical strength of the material, while increasing the specific surface area and pore volume of the material;

(3) By surface passivation modification, the antioxidant performance of the adsorbent in acidic wastewater is improved.

4. Process treatment effect

The use of adsorption technology to treat waste acid can effectively remove COD and chromaticity from wastewater, and is suitable for waste acid oil removal, waste acid COD removal, waste acid decolorization, etc. The specific treatment data is shown in the table。

Data on COD removal by waste acid adsorption

Recovery of sulfonated para esters from waste sulfuric acid

5. Core advantages of the process

(1) Efficiently removing organic matter from waste acid, special adsorption materials have large adsorption capacity, high concentration ratio, and low investment;

(2) The processed waste acid can be reused in production, achieving the resource utilization of waste acid;

(3) The equipment occupies less land, has a compact structure, and requires less investment in civil engineering and equipment; The desorption agent is applied multiple times and concentrated step by step, resulting in high drug utilization and low operating costs;

(4) It can be implemented in module component form, flexibly adjusted according to production capacity, and easy to install;

(5) Advanced and mature technology, with strong technical support and rich engineering application experience.