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Study on Process of Buji River Pollution Bioremediation

Author: WanJie
Tutor: JinWenBiao；CaoXiangDong
School: Harbin Institute of Technology
Course: Municipal Engineering
Keywords: River pollution Bioremediation Contact Oxidation Aquatic plants
CLC: X52
Type: Master's thesis
Year: 2008
Downloads: 50
Quote: 0
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Abstract


Buji River is a tributary of the Shenzhen River, a large number of coastal industrial wastewater and the living untreated sewage discharged into the water environment is deteriorating. In order to improve the Buji River to improve water quality in Shenzhen River Basin Water Environment, the paper carried out using enhanced biological contact oxidation - aquatic plants combined process of bioremediation Phuket river pilot plant. First compare the polyethylene hollow suspended ball, the soft fiber braid filler and Arco spread the new packing biofilm capacity sewage treatment capacity and practicality. The results show that the Arco spread the filler pollutant removal effect is good, easy to install, and follow-up maintenance management Province, is the process of choice filler. Then select the mode of biological contact oxidation process. Dynamic test by simulating river research indicates that aerobic - aerobic - oxygen mode for better process model, the COD removal rate could reach 60%, the effluent concentration by the influent concentration of 120 mg / L was reduced to 50 mg / L, reach 1B standard in urban sewage treatment plant pollutant discharge standards \However, ammonia nitrogen and total nitrogen removal efficiency is poor, only 34% and 26%, effluent concentrations were 13 mg / L and 22 mg / L not met. As the process is no mud, phosphorus removal is also poor. In order to effectively improve the nitrogen removal process, using a dosing complex species strengthen environmentally sound removal of NH4-N. The static test studies have shown that the dosage of 1/100 can be made good nitrogen removal. Dynamic test results show that put into bacteria, ammonia nitrogen and total nitrogen removal, respectively, 70% and 50%, 35% and 25% compared vote bacteria, the effluent ammonia nitrogen and total nitrogen concentration can be reduced to 6 mg / L and 13 mg / L, reached 1B standard in urban sewage treatment plant pollutant discharge standards \In order to strengthen the process of phosphorus removal, the use of aquatic plants process enhanced phosphorus removal. Compare different aquatic nitrogen and phosphorus removal, the test results show that the the Ceratophyllum demersum binding medium can effectively remove phosphorus. Grow plants effluent total phosphorus can reach the standards of urban sewage treatment plant pollutant discharge standard \Finally, the efficiency and economy of this joint process were evaluated. This process can improve the water quality situation in Buji River, treated water quality can be achieved national \

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CLC: > Environmental science, safety science > Environmental pollution and its prevention > Water pollution and its control
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