What technology is currently used for zero discharge of industrial wastewater?
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Nowadays, water resources are becoming more and more tense. I hope experts or technicians who know the zero discharge technology of industrial wastewater can give me some advice.
First of all, you need to determine what are the main components of the wastewater, or what indicators cannot meet the standards and need to be treated. If you are talking about the zero-discharge wastewater treatment project in the fertilizer industry, it includes a lot of content. Different emission standards are implemented according to different production scales. The content roughly includes gas-making wastewater treatment, boiler wastewater treatment, tannin desulfurization and continuous sulfur melting process, and waste ammonia concentration recovery. Use, alcohol hydrocarbonization and refining, waste oil and water treatment, desalted water treatment technology improvement, improvement of circulating cooling water system, separation and classification of clear and turbid waste water, terminal waste water treatment, online analysis system, etc. The conditions of each factory are different, and the technology adopted will be different. It is useless if you want to know the names of technical experts or technicians. Just entrust a qualified unit to make a technical plan based on your on-site conditions. We cannot generally say what technology is used for zero discharge of industrial wastewater. It depends on the specific situation. This post was last edited by zyy1311 on 2008-1-18 10:51 ]
Water COD and NH3-N treatment are generally these. Of course, oily wastewater must be treated by oil recovery and then COD and NH3-N. Wastewater containing slag must be precipitated and treated first. COD and NH3-N can be treated biologically. This technology is now used in many purified water treatment or sewage plants.
For specific water quality analysis, first adjust the SS, COD, BOD, and PH in the water to the allowable range, and then use the membrane method to make this water into usable water, such as circulating water, boiler water replenishment, and process water, to reduce water emissions and realize water recycling.
Replenish: It is the wastewater from the coal-water slurry gasification plant to produce synthetic ammonia and urea.
Isn’t it just sedimentation, chemistry, and biochemistry? The final super-concentrated wastewater is evaporated in a specific pool. Such a large evaporation amount in Inner Mongolia can help you achieve "zero" emissions.