The chemical industry generates large volume wastewater, much of which poses significant hazards and may cause severe water environment pollution. Relevant authorities require enterprises to make proper preparations for wastewater discharge. It is essential to assess water quality for targeted treatment, and implement wastewater disinfection and monitoring. Understanding the characteristics of chemical wastewater is also critical to achieve more targeted treatment. Five key features are outlined below:

1.Unstable pH value. Wastewater discharged from chemical plants may be strongly acidic or strongly alkaline, which can cause harm to organisms and crops.

2.High concentration of organic substances. This is typical in petrochemical wastewater, which contains high levels of organics such as acids, aldehydes and ketones. These substances undergo oxidative decomposition in water and consume large amounts of dissolved oxygen, adversely affecting the survival of aquatic organisms.

3.Abundant nutrient compounds. Wastewater with high nitrogen and phosphorus content leads to water eutrophication, triggering excessive reproduction of microorganisms and algae, and impairing fish growth.

4.Irritant and toxic properties. Chemical wastewater contains toxic substances including arsenic, mercury, cadmium, phenol and lead, which exert toxic effects on organisms at certain concentrations. It may also contain irritant and corrosive substances such as alkalis and inorganic acids.

5.Difficult environmental remediation. In particular, heavy metals enriched by microorganisms remain hard to eliminate even after discharge ceases.

To mitigate water environment pollution, wastewater must be treated to meet safe discharge standards. Wastewater Monitoring plays a vital role throughout the whole treatment process. Hangzhou Modi is a manufacturer of Online Water Quality Monitors. It independently develops water quality monitoring devices with diverse parameters, applicable to various fields requiring water quality analysis.