Research On Emergency Treatment Technology Of Firefighting Wastewater From A Organic Chemical Factory

With the rapid development of the economy, people's awareness of protecting environment is raising. Wastewater treatment and the influence to the surrounding ecological environment in the chemical disaster have become the importance and difficulty of current firefighting. Compared with general fire, the physical and chemical properties of the stock goods in chemical plants will directly decide the particularity of firefighting action during the fire disaster. We should do correct fire extinguishing, at meantime, should pay more attention to safe handling its wastewater and ecological security control of surrounding ecological system.This research analyzes the combustion of each stock goods and its product by simulating the fire disaster of a chemical plant. After experiment, we can get the Water Quality Standard content of firefighting wastewater, then adopt several emergency treatment to control the risk, such as chemical oxidation, coagulation, activated carbon adsorption, etc. Mainly conclusion of this research is as follows:1. Nowadays, chemical plants pay more attention to the firefighting wastewater treatment after fire disaster, and most of them have built fire emergency pool to collect the firefighting wastewater. As to the chemical plant in this research, we know the Water Quality Standard of firefighting wastewater in simulating the fire disaster:COD content is 9300mg/L pH is 5, NH3-N content is 340 mg/L.2. After we know well the Water Quality Standard of firefighting wastewater in simulating the fire disaster, we start seeking a way of best treating wastewater pollutant produced by firefighting. By adding PAM or PAC separately in different conditions to compare, we get the best reaction condition in different treatment efficiency. In best reaction condition, PAM can remove COD by 24.62%, and remove NH3-N by 12.35%. PAC can remove COD by 20.86%, and remove NH3-N by 13.86%3. Adding KMnO4 or Fenton separately in different conditions to compare its treatment efficiency, KMnO4 can remove COD by 25.27%, NH3-N can remove COD by 12.94%, and Fenton reagent can remove COD by 92.15%, NH3-N can remove COD by 16.18%.4. In final combined reaction, after adding activated carbon, I can get the best treatment performance in overall reaction. The removal rate of COD can reach 96.34%. The removal rate of NH3-N can reach 22.65%. This way of coagulation-oxidation-activated carbon absorption has obvious utility in emergency treatment. What's more, the adding material in emergency treatment can accord to the standard of green, economy and environment. We only need to invest a little more in current firefighting emergency pool, adding the equipment of adding agentia which used to coagulation and chemical oxidation, in order to emergent sate treating firefighting wastewater.