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Five-step method to identify whether sludge is hazardous
According to the National Development and Reform Commission of the Ministry of Environmental Protection and the Ministry of Public Security, the National Hazardous Waste List and the Hazardous Waste Identification Standards, which were implemented since August 1, 2016, are combined with the Ministry of Housing and Construction, the Ministry of Environmental Protection, and the Ministry […]
Interpretation of whether sludge is dangerous or not
Is the sludge hazardous? Many people have such doubts. The following is an explanation of whether the sludge is dangerous or not, for your reference! 1. The public sewage treatment plant used solely for the treatment of urban domestic sewage, the sludge produced by it usually has no dangerous characteristics and can be used as […]
Four typical sludge discrimination
1. Electroplating wastewater and electroplating sludge with excessive heavy metals: Electroplating sludge is a hazardous waste, and the waste category often belongs to HW17, HW21, HW22, and HW23. Electroplating wastewater with excessive heavy metals belongs to the scope of prevention and control of wastewater pollution and is included in wastewater management. It is not applicable […]
Treatment of ore dressing wastewater and oily wastewater
1. Mineral processing wastewater The ore dressing wastewater has the characteristics of large water volume, high suspended solid content and many types of harmful substances. Its harmful substances are heavy metal ions and mineral processing chemicals. Heavy metal ions include copper, zinc, lead, nickel, antimony, cadmium, and arsenic and rare elements. The flotation reagents added […]
What wastes are produced in industry
1. Heavy metal wastewater Heavy metal wastewater mainly comes from wastewater discharged from mines, smelting, electrolysis, electroplating, pesticides, medicine, paints, pigments and other enterprises. The type, content and form of heavy metals in wastewater vary with different production companies. The principle of heavy metal wastewater treatment is: The most fundamental is to reform the production […]
How to deal with toxic wastewater
The toxic waste water mainly includes cyanide-containing wastewater, phenol-containing wastewater and mercury-containing wastewater. Cyanide-containing wastewater Cyanide-containing wastewater mainly comes from electroplating, gas, coking, metallurgy, metal processing, chemical fiber, plastics, pesticides, and chemical industries. Cyanide-containing wastewater is a kind of toxic industrial wastewater. It is unstable in water and easy to decompose. Inorganic cyanide and organic […]
The basic way of industrial waste heat utilization
The use of industrial waste heat utilization is an important way to improve the economy and save fuel. There are various waste heats in the production process of thermal power plants. For example, boiler waste heat, deaerator exhaust and steam seal steam exhaust heat. This type of waste heat belongs to the heat transfer of […]
What are the soil remediation processes?
With the continuous development and progress of the society, people’s use of resources has been continuously improved, and even excessive exploitation of resources has led to continuous changes in the environment, showing a terrible situation of linear decline. Let’s take a look at the relevant information on soil remediation. Soil remediation definition Soil remediation refers […]
What are the industrial sludge treatment options?
In industrial wastewater treatment, municipal wastewater and industrial sludge treatment, the amount of sludge produced is about 0.3% to 0.5% of the total treatment (97% water content). The composition of the sludge is complex, containing parasitic eggs, heavy metals and pathogenic microorganisms, which must be treated to prevent secondary pollution to the environment. At present, […]