|
Rapid industrial development, water water water pollution exacerbate the deteriorating trend, conventional water sources water treatment process has been unable to meet the micro-polluted source water treatment requirements, develop another source of water purification process of water depth, and has been widely concerned. Coastal areas Laiyang a river belongs to the content of the micro-polluted source water, the water solubility of organic pollutants, ammonia compounds, such as water quality indicators were COD Mn 8 2 2mg / l, ammonia 1.1 4 .2 mg / l more than the corresponding value of the national drinking water health standards \Ozone biological aerated composite technology for the water quality of the source water, water treatment of the source water, the specific content of the study are as follows: 1. Pretreatment test: (1) by changing the ozone dosage biofilter filtration rate, water temperature, etc. ceramic, a sponge, embedded bacteria three treatment processes of COD Mn Ammonia Removal determine ozone dosage, BAF filtration rate, water temperature and other parameters. ② compare different treatment effect of the treatment process, to determine the treatment process and processing parameters. Coagulation tests: pretreatment effluent conventional process of coagulation and sedimentation test, study conventional treatment effect on the removal of COD Mn . Activated Carbon Treatment trials: study activated carbon dosage and adsorption equilibrium time, view the depth of treatment effect, further optimize the water quality standards ensure that the process in the case of low-temperature operation. Studies have shown that pretreatment of ceramsite Biological Aerated Filter best water temperature reaches 17 ℃, the ozone dosage to 2.64mg / l, the filtration rate 4m / h ceramsite pretreatment effluent water quality COD Mn ≤ 6mg / l, NH 3 -N lt; 0.5mg / l, pH6.3-6.8, are in line with three types of water quality in the national surface water. 30mg / l, the coagulant dosage coagulation tests for depth processing test powder activated carbon dosage of 30 mg / l, the final effluent of COD Mn lt; 3mg / l, NH , 3 -N lt; 0.2mg / l, were lower than the national drinking water health standards. Study by the determination of operating data to prove the the Ozone Complex Process coastal areas slightly polluted source water is an advanced, effective and reasonable water water purification process: Meanwhile, the results of this study for the coastal areas and conduct extensive micro- water purification treatment of contaminated water engineering reference.
|