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 […]
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 […]
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 […]
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 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 […]
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 […]
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, […]
There are a lot of kitchen waste, high moisture content and low calorific value in China’s urban domestic waste. During incineration, fresh waste must be stored in the waste storage pit for 3-5 days for fermentation and ripening, so as to achieve the purpose of draining water and increasing calorific value, so as to ensure […]
Curing / stabilizing treatment Before filling, it is usually necessary to solidify and stabilize the incineration ash flow, which can not only reduce the impact of leaching of toxic heavy metals in the ash on the geological environment, but also ensure the engineering safety. (1) curing. Solidification is a process in which hazardous wastes are […]
The clinker burning part of the cement factory production line mainly consists of: preheater system, decomposition furnace, bypass windproof system, kiln tail high temperature fan, exhaust gas treatment system, rotary kiln, firing system, etc. What are the requirements? Let’s take a closer look! The preheater system should be arranged in accordance with the following regulations: […]