Multi-level circulation aerobic treatment technology

An aerobic treatment and grade aerobic technology, which is applied in the fields of water/sewage multi-stage treatment, sustainable biological treatment, biological water/sewage treatment, etc. Effect of treatment efficiency, short hydraulic retention time, and improved treatment rate

Active Publication Date: 2009-11-25
江苏马盛生物科技股份有限公司
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Problems solved by technology

However, if the concentration of pollutants in the wastewater is high or the pretreatment effect is not ideal, the organic matter load at the front end of the biofilm method is relat

Method used

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Embodiment Construction

[0019] Before the actual operation, the aerobic reaction tank should be inoculated with aerobic sludge first, to ensure that the sludge concentration in the aerobic reaction tank is 2g / L, and it will be continuously exposed for 24 hours, and then gradually increase the load of the aerobic reaction tank according to the gradient. The domestication of sludge, that is, the start-up of the reaction system, when the COD removal rate of the wastewater treatment effect is stable above 90%, the oxygen content in the reaction system is greater than 2mg / L, and the average flow rate of the water body reaches 0.3-0.5m / s. The reaction system startup is considered complete. After the reaction system was stabilized, water was fed continuously.

[0020] In December 2008, Jiangnan University used anaerobic and aerobic methods to treat the landfill leachate of Wuxi Huilian Waste-to-energy Power Plant. Aiming at the high COD and complex water quality of landfill leachate, multi-stage aerobic tre...

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Abstract

Multi-level circulation aerobic treatment technology belongs to waste water treatment technology. The invention provided technology is: 1) each level aerobic reaction device uses upper-lower layer mode to divide the device into upper and lower two parts, the lower part uses traditional fan to aerate, the upper layer uses surface to aerate and pushes water stream to form a circular flow; 2) uses multi-level aerobic reaction device combination mode to form multi-level circulation aerobic reaction. The invention has high operation stibility and strong resistance to impact load; uses a combined circular areation mode of upper-level layers to aerate at the same time, and surface aeration pushed water flow, to promote phase contact of mass transferphase interface alternation, and provides good motion conditions for biochemical reactions of activated sludge organic substrage and oxygen, acclerates reaction speed and improves waste water treatment efficiency; liquid flowing speed in system approaches 0.3-0.5 m/s, high oxygen utilization ratio, strong biochemical reaction, fast microorganism metabolism, high sludge activity, short hydraulic retention time; and removing ratio of pollutants are improved 20-30% comparing with the former aerobic treatment method.

Description

technical field [0001] A new type of aerobic treatment technology-multistage circulation aerobic treatment technology belongs to the technical field of wastewater treatment. Background technique [0002] Water pollution and water shortage are two major problems facing the world. At present, the total annual sewage discharge in my country is 39.5 billion m 3 , according to predictions, by 2050, my country's total sewage discharge will be as high as 120 billion m 3 . [0003] With the acceleration of my country's economic development and urban construction, the urban population has grown rapidly, and the water consumption for production and living has increased sharply. The substantial increase in the discharge of urban sewage and wastewater is bound to pose a serious threat to the quality of the water environment. Therefore, research on the treatment of wastewater has become an urgent problem to be solved. [0004] Aerobic treatment is an important method of wastewater t...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F3/12
CPCY02W10/10
Inventor 阮文权
Owner 江苏马盛生物科技股份有限公司
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