1.Hazards of Industrial Wastewater and Definition of Wastewater
1.1 Definition of Wastewater
Wastewater refers to the general term for water discharged from human residential activities and runoff rainwater, including domestic sewage, industrial wastewater, and initial rainwater flowing into drainage pipelines and other unusable water bodies. Generally, it refers to water that cannot be recycled and reused after conventional technical treatment, or water that fails to meet relevant standards for purification treatment due to primary pollution.
1.2 Main Hazards of Industrial Wastewater
Industrial wastewater is highly polluting with a wide hazard range and long impact cycle, causing multiple irreversible damages to the ecological environment and human health. Therefore, great importance must be attached to industrial wastewater monitoring. Its specific hazards are reflected in the following aspects:
First, it pollutes the atmospheric environment. Untreated industrial wastewater contains a large number of volatile pollutants that emit pungent odors, continuously pollute the surrounding air, damage the regional atmospheric environmental quality, and adversely affect the living environment.
Second, it endangers ecological balance and human health. Industrial wastewater is enriched with various toxic and harmful substances, which will be absorbed and accumulated by animals and plants. These substances will eventually enter the human body through the food chain, continuously damaging human body functions and causing various health risks. Among them, cyanide-containing wastewater is extremely toxic. It mainly comes from electroplating, gas, coking, metallurgy, metal processing, chemical fiber, plastic, pesticide, chemical and other industries. It is unstable in water and easy to decompose. Both inorganic cyanide and organic cyanide are highly toxic substances that can cause acute poisoning in humans after ingestion.
Third, it damages soil and water resources. Industrial wastewater discharged without up-to-standard treatment will directly infiltrate the soil, destroy soil structure, reduce soil fertility, inhibit normal plant growth, and cause permanent soil pollution. Meanwhile, when the wastewater flows into surface water and seeps into groundwater, it will cause secondary water pollution, deteriorate the water environment quality, and directly threaten residents’ domestic water safety. If polluted wastewater is recycled without monitoring and control, it will trigger serious environmental and safety accidents.
2.Introduction to Industrial Water Quality Monitoring Equipment
Regular and accurate water quality monitoring is a core means to control industrial wastewater pollution and prevent environmental risks. Professional online monitoring equipment provides reliable data support for water environment supervision. The mainstream monitoring equipment is mainly divided into two categories:
2.1 Multi-parameter Online Water Quality Detector
The multi-parameter online water quality detector is an integrated water quality monitoring equipment independently developed by Jingxuntongchang, integrating multiple water quality monitoring parameters. Equipped with high-sensitivity detection probes, the equipment features accurate and stable measurement data, strong environmental adaptability, simple maintenance, high temperature and high pressure resistance, long service life and good data confidentiality. It is widely applicable to water quality monitoring of industrial wastewater, domestic sewage, metallurgical process water, swimming pool water, tap water plant water, hospital sewage and other water bodies. It supports personalized customization of monitoring parameters to accurately meet the monitoring needs of different industries and scenarios.
2.2 National Standard Online Water Quality Analyzer
Adopting the national standard spectrophotometry as the core measurement principle, this equipment is a professional analytical device compliant with national water environment monitoring standards. Among them, the Hexavalent Chromium Online Analyzer serves as one of its core monitoring modules. It can accurately monitor key water quality parameters such as Chemical Oxygen Demand (COD), ammonia nitrogen, total phosphorus, total nitrogen, turbidity, heavy metals, permanganate index, chroma, hardness and hexavalent chromium, specially adapting to the special monitoring requirements of hexavalent chromium pollutants in industrial wastewater. With a high degree of automation, it supports unattended automatic all-weather monitoring and features low reagent consumption and controllable operation and maintenance costs. It is widely used in water environment automatic monitoring stations, tap water plants, water boundary sections and water quality analysis laboratories. It also meets the daily water environment monitoring requirements for enterprise wastewater discharge, sewage detection and supervision by ecological and environmental regulatory authorities at all levels, acting as a key device for the monitoring and control of heavy metal wastewater pollution, especially hexavalent chromium pollution in industry.
