Inorganic Waste Acid Treatment in Water Treatment

According to statistics, China generates over 100 million tons of waste acid annually, with titanium dioxide, petroleum processing, and steel pickling enterprises producing a significant amount of waste acid. The acid pickling solution has strong acidity (pH<1) and high metal content. If it enters the natural world, it has great toxicity to organisms and microorganisms in water bodies, seriously pollutes the environment, poses great harm to groundwater, soil, etc., and disrupts ecological balance.

In September 2014, a person in Tianjin was sentenced to 4 years in prison for indiscriminately dumping waste acid;

In December 2014, six chemical companies in Jiangsu dumped waste acid and polluted river water, compensating more than 160 million yuan for environmental remediation costs;

In January 2015, six people in Jiyang, Shandong were charged with environmental pollution for discharging waste acid into the Tuhai River;

In March 2015, two people in Tangshan, Hebei were sentenced for dumping waste acid;

In January 2016, three people in Nantong, Jiangsu were sentenced to two years in prison and fined for indiscriminately dumping waste acid;

In October 2016, a factory in Shandong illegally dumped over 600 tons of waste sulfuric acid, and the perpetrator was sentenced to 6 years in prison;

In May 2017, four people in Tianjin were sentenced to 2-5 years in prison for illegally dumping waste hydrochloric acid.

Waste acid has long been a stubborn problem that the environmental protection industry has to deal with and is difficult to control. Environmental protection departments in various regions have established relatively strict emission standards for this purpose. Various waste acid treatment technologies are also constantly being updated. The table below provides a comprehensive comparison of the current conventional governance methods.

Our company's independently developed inorganic acid adsorbent is used for efficient separation of acids and metal ions. By utilizing the high selectivity of the adsorbent for inorganic acids, the inorganic acids in the waste acid can be adsorbed, while the metal ions in the waste acid can pass through, and the adsorbed inorganic acids can be regenerated and recovered. The final acid and metal ions are effectively separated and recycled separately. Adsorbent materials have a long service life and low operating costs.

Application Cases

1. The zinc and iron containing waste acid from a hazardous waste treatment company in Jiangsu requires separation of zinc and iron. The processing effect is shown in the table below.

The sequence is as follows: original waste acid, effluent (containing iron liquid), fast washing solution (containing iron liquid), desorption solution (containing zinc liquid)

2. The lead and iron containing waste acid from a hazardous waste treatment company in Jiangsu requires lead removal from the waste acid to meet the requirements for subsequent resource recovery and treatment. The processing effect is shown in the table below. The project is in the contract phase.

3. A chemical plant in Jiangsu Province produces waste acid using concentrated sulfuric acid as a catalyst, with a treatment requirement of COD ≤ 3500mg/L. The processing effect is shown in the table below.

4. The treatment requirement for nickel containing waste acid generated by a chemical plant in Shandong is acid recovery. The effect is shown in the table below.

Jiangsu Haipu Functional Materials Co., Ltd. is located in the beautiful and talented Dushu Lake Science and Education Zone in Suzhou. It is a high-tech enterprise dedicated to the research and application of environmentally friendly new materials and technologies, and is committed to providing domestically leading products, technologies, and technical solutions for industries such as environmental protection, new energy, chemical and pharmaceutical industries.

The functional materials independently developed by the company include highly selective nanoporous inorganic acid adsorbents, highly selective nickel removal adsorbents, nanohybrid adsorbents, high-capacity organic matter adsorbents, high-capacity mesoporous phosphorus removal adsorbents, high-efficiency VOC treatment adsorbents, high-efficiency wastewater oxidation catalysts, high-efficiency exhaust gas oxidation catalysts, etc. They have been demonstrated and applied in leading enterprises in industries such as petrochemicals, agrochemicals, pharmaceuticals, and electronic electroplating. And successively won honors such as National High tech Enterprise, 7th Science and Technology Leading Talent of Industrial Park, Innovation and Entrepreneurship Leading Talent of Gusu, and 9th Science and Technology Leading Talent of Industrial Park. Haipu is guided by market demand, driven by technological innovation, and supported by high-end talents, providing you with solutions for environmental protection, separation and purification.