Analysis indicators for hydrogen production and purified water

After purification, the acidic water in oil refining hydrogen production units typically requires removal of contaminants from the condensate to ensure water quality. The analytical items and indicators for purified water mainly include: 1. **pH value**: This measures the acidity or alkalinity of water; the normal range should be close to neutral, approximately between 6.5 and 8.5. 2. **Conductivity**: It reflects the concentration of dissolved ions in water; the lower the conductivity, the purer the water. 3. **Suspended solids (SS) and Total Dissolved Solids (TDS)**: These measure the total amount of solid substances that are suspended or dissolved in water. 4. **Organic matter content**: Such as Chemical Oxygen Demand (COD) and Biochemical Oxygen Demand (BOD), which are used to measure the amount of organic matter in water. 5. **Oils**: This includes total petroleum hydrocarbons (TPH), etc. The specified limits are usually very low to ensure that water quality is not affected by oil contamination. 6. **Heavy metals**: The levels of heavy metals such as lead, mercury, and cadmium must be strictly controlled, as they are harmful to both the environment and human health. 7. **Ammonia nitrogen and sulfides**: Especially when treating acidic water, it’s necessary to pay attention to the levels of ammonia nitrogen and sulfides. The specific indicator values need to be determined based on local environmental protection standards and process requirements; these standards may vary in different regions and **. When designing and operating purification systems, relevant environmental protection standards and industry guidelines should be consulted to ensure that the purified water meets the requirements for discharge or reuse. .

It’s too specialized; generally, we don’t have that many test indicators