System and method for biological coupling photocatalytic synchronous treatment of degradation-resistant organic wastewater
A technology for simultaneous treatment of organic wastewater, applied in chemical instruments and methods, multi-stage treatment of water/sewage, water/sludge/sewage treatment, etc. Controlling the biodegradability of photocatalytic products, increasing the operating cost and difficulty of operation of the reactor, etc., to achieve the effect of good reference, reduce processing difficulty, and reduce equipment footprint
Pending Publication Date: 2019-05-14
NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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Problems solved by technology
The indirect coupling process requires two reactors for advanced oxidation and biodegradation, which increases the floor area and construction cost. In addition, the time required for each unit must be dynamically changed according to the influent water quality, advanced oxidation degradation efficiency and biodegradation efficiency, which is difficult Control the biodegradability of photocatalytic products, increase the operating cost and difficulty of operation of the reactor
Chinese Patent Authorization Announcement No. CN201264955Y discloses an air-lift internal circulation reactor integrating photocatalytic oxidation and biodegradation. Organically combined with biodegradation, photocatalytic oxidation and biodegradation are carried out simultaneously, and the influence of influent turbidity on photocatalytic efficiency is not considered
Method used
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Embodiment 1
[0029] Example 1, a system and method for synchronously treating refractory antibiotic organic wastewater with bio-coupling photocatalysis, the organic wastewater has a turbidity of 200 NTU, a concentration of 25 mg / L, a sand filter device reduces the turbidity to 2 NTU, and the ultraviolet light is illuminated for 10 hours. Under the condition of 25 degrees Celsius and microporous aeration of 3L / min, the degradation and removal rate of organic matter can reach 98%.
Embodiment 2
[0030] Example 2, a system and method for synchronously treating refractory phenol organic wastewater with bio-coupled photocatalysis. The organic wastewater has a turbidity of 100 NTU and a concentration of 50 mg / L. The sand filter device reduces the turbidity to 1 NTU. Under the condition of 15 degrees Celsius and microporous aeration of 6L / min, the degradation and removal rate of organic matter can reach 99%.
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Abstract
The invention relates to a system and a method for biological coupling photocatalytic synchronous treatment of degradation-resistant organic wastewater. The system comprises a sand filtering device, abiological coupling photocatalytic device, a solar power generation system and a PLC control system. The sand filtering device removes suspended solids in the organic wastewater for pre-treatment ofbiological coupling photocatalysis. The biological coupling photocatalytic device is directly coupled to photo-catalytic oxidation and biodegradation technologies, so that photo-catalytic oxidation and biodegradation are carried out synchronously. Compared with an indirect coupling way, the operating cost and the treatment difficulty are reduced, and the occupied area of equipment is reduced and the cost is lowered. Meanwhile, the solar power generation system supplies power to a photocatalytic light source, so that the operating cost is further lowered. The PLC control system monitors a system process intelligently in real time, so that the operating stability is guaranteed. The system and the method forbiological coupling photocatalytic synchronous treatment of degradation-resistant organic wastewater provided by the invention can degrade degradation-resistant organic matters quickly and efficiently. The whole system is stable to operate and low in energy consumption.
Description
technical field [0001] The invention relates to the field of organic wastewater treatment, in particular to a system and method for synchronously treating refractory organic wastewater with bio-coupled photocatalysis. Background technique [0002] With the acceleration of our country's industrialization process, the problem of water pollution is becoming more and more serious, which has caused serious harm to the living environment of human beings, and it is imminent to solve the problem of water pollution. The organic pollutants contained in polluted water have the characteristics of many types and great harm. Some of the organic pollutants can neither be biodegraded, but also contain toxic and harmful substances. Once discharged into natural water bodies, they are difficult to degrade and may cause eutrophication Globalization has resulted in massive deaths of aquatic organisms, endangering biodiversity, and polluted organisms will affect human health along the biological ...
Claims
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IPC IPC(8): C02F9/14C02F101/30C02F101/34
Inventor 徐斌张毅敏朱月明许雪婷皋海岭杨飞汪龙眠彭福全孔明高月香晁建颖
Owner NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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