Industrial Wastewater

Industrial park wastewater exhibits distinct characteristics primarily due to complex chemical processes involved. Its key features include:

• High Emission Volume

With the expansion of the park scale, the average daily wastewater discharge can reach tens of thousands of cubic meters, requiring large-scale and stably operated centralized treatment facilities.

• Complex Composition

The park hosts a wide variety of enterprises. After mixing, the wastewater contains organic matter, inorganic substances, heavy metals and refractory toxic substances, requiring targeted treatment strategies for different pollutants.

• High Pollutant Concentration

For some industries such as coking, the COD of wastewater can exceed 10,000 mg/L. Pretreatment is required to reduce the load before biological treatment.

• Large Variation in Biodegradability

Food wastewater is easily degradable, while the BOD/COD ratio of chemical and pharmaceutical wastewater is usually below 0.3. Hydrolysis acidification or advanced oxidation is needed to improve biodegradability.

• Significant Fluctuations in Water Quality and Quantity

Affected by production cycles, discharge is discontinuous with obvious differences between peak and low periods. The treatment system is required to resist shock loading, and regulating tanks are usually installed to balance influent water.

• Presence of Toxic and Harmful Substances

Wastewater from electroplating, chemical and other industries contains chromium, nickel, cyanide, VOCs and other substances that inhibit microbial activity. Chemical precipitation, ion exchange or membrane technology must be applied for pre-removal.

Materials Needed

• Industrial parkwastewater sample
• Polyacrylamide powder (prepared as per the previous guideline)
• Beakers or containers
• Magnetic stirrer
• pH meter
• Flocculation testing apparatus (e.g., jar test apparatus)
• Chemical dosing equipment

Testing Procedure

1. Sample Collection:

• Receiveindustrial park wastewater from partner. Check the background and demand of partner.

2. 2. Preparation solution of Polyacrylamide powder:

• Ensure that you have a prepared solution of polyacrylamide, as discussed in the previous procedure. This can be used for the flocculation process.

3. 3. Flocculation Test (Jar Test):

• Setup:Prepare a series of beakers for different doses of polyacrylamide
• Add Wastewater:Add equal volumes of the wastewater sample to each beaker (in this case, 50 mL).
• Add Polyacrylamide:Add the specified amount of polyacrylamide to corresponding beakers.
• Mixing:Stir the solutions at a rapid speed (in this case, 200 rpm) for about 1-2 minutes, then stop for an additional 3 minutes to allow floc formation.

4.  
   4. Post-Treatment Analysis:

• Visual Assessment:Observe and note the clarity and color of the treated water.
• pH Measurement:Measure the final pH of the treated samples.

Safety Precautions

• Wear appropriate PPE (gloves, goggles, lab coat) while handling wastewater samples and chemical agents.
• Handle all chemicals and equipment according to safety guidelines.

Conclusion

This procedure provides a systematic approach to assessing the effectiveness of polyacrylamide on treating industrial wastewater. It's important to optimize the concentration of polyacrylamide based on the characteristics of the specific wastewater being treated for best results.

We, Jiangsu Hengfeng Fine Chemical Co., Ltd., are a dedicated polyacrylamide manufacturer based in Jiangsu, China, with a production capacity of 50,000 tons/year for both powder and emulsion grades. All products are manufactured under ISO 9001 and ISO 14001 certified processes.

Our technical support includes lab-scale trials, pilot testing, and on-site assistance. If you can send us wastewater sample, we can recommend the right grade and dosage before you commit to a trial order. Contact us directly to discuss your wastewater demand.