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Study On The Water Quality Improving Technology Of The Light Polluted WenYu River

Posted on:2010-05-14Degree:DoctorType:Dissertation
Country:ChinaCandidate:L P ZhangFull Text:PDF
GTID:1102360278481572Subject:Environmental Engineering
Abstract/Summary:PDF Full Text Request
This paper deals with the quality improving technology of the light polluted water from WenYu River. The result shows that the water-quality indexes of WenYu River such as ammonia nitrogen, total nitrogen exceed the standard, the biochemical index BOD5/CODcr<0.3 which is hard to biodegradation; prepared a electrode with high concentration and strong active oxidizing property which used titanium as anode's substrate material, and the surface coated with a definite ratio RuO2, TiO2 and IrO2; making the optimal parameter through testing such as polar plates spacing is 1.0cm, electrolysis span is 10 minutes, electrolysis voltage is 11V, mole ratio between ammonia nitrogen and NaCl is 1:3; conjectureing the mechanism of removal nitrogen based on the experimental investigations; researching and developing a light polluted water treated equipment which has been applied for patent; fixing on electrochemistry oxidation and constructed wetland treatment technology of semi-experiment combined the advantages of constructed wetland, making the optimal parameter through lab testing such as polar plates spacing is 1.0cm, electrolysis span is 10 minutes, electrolysis voltage is 6V, mole ratio between ammonia nitrogen and NaCl is 1:3, quadratic reaction time 10min, hydraulic detention time 7days of constructed wetland, the water quality indexes of effluent from the sewerage treatment system are. meted or even preceded the remand ofâ…£water bodies standard such as the mean concentration of ammonia nitrogen is 0.27mg/L, total nitrogen is 2.4mg/L, CODcr is 10.76mg/L, BOD5 is 4.08mg/L, total phosphorus is 0.18mg/L; the power consumption treating per ton wastewater of electrochemistry oxidation equipment is 1.77KWh, the total costs are 1.32 RMB; discharging mud, washing electrode, preventing blocking up the filtering bed and covering and keeping warm at regular intervals on operating, maintaining and administrating.
Keywords/Search Tags:light polluted water, electrochemistry, constructed wetland, denitrification
PDF Full Text Request
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