Combined self-refluxing denitrogenating biological turntable

A biological turntable and self-return technology, applied in sustainable biological treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc. The effect of energy saving, specific surface area and volume utilization improvement

Inactive Publication Date: 2007-07-11
SOUTHEAST UNIV
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  • Claims
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Problems solved by technology

Occasionally, the denitrification process also requires a combination of aerobic + anaerobic + aerobic, that is, it must be arranged in a three-axis form at least, and low-molecular organic substances such as methanol need to be added in the anaerobic zone. The process is more complicated and the energy consumption is higher.

Method used

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  • Combined self-refluxing denitrogenating biological turntable
  • Combined self-refluxing denitrogenating biological turntable

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Embodiment Construction

[0017] The filler-combined biological turntable frame of the present invention can adopt structures such as glass fiber reinforced plastics and hard plastics, and the gap between the disks is 90 mm, and 80 mm combined spherical fillers or elastic fillers can be filled. The riser is made of PVC or FRP round pipe or square pipe. As the turntable rotates, the riser is sometimes submerged in the water and sometimes exposed to the water. Water enters when the riser is submerged in water, and starts to discharge water after it is rotated to a horizontal position in the air. The water inlet and the water outlet are shared and are arranged at one end of the riser. An air outlet needs to be provided at the other end to ensure that the water can fill the riser. By changing the size and number of risers (1 to 4), the return rate can be adjusted. The backflow generally returns to the denitrification tank, and the submergence rate of the first-stage biological turntable is controlled to b...

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Abstract

A combined type inverse flow biological denitrification rotating bio-disc is a advanced technique for using of the treatment of medium or small-sized domestic sewage and industrial sewage, its structure comprises: a denitrification tank (1A) on the left and a reaction tank (1B) on the right are in the frame (1), the revolution axis (5) of which the one end connects with the electromotor (6) is in the middle of the reaction tank (1B), in the middle of the revolution axis setting three class rotating bio-discs separately and baffles are setted among the three class rotating bio-discs, a lift leg (15) is setted outboard the third class rotating bio-discs, and a circulation tank (11) is setted on the side over against the lift leg in the reaction tank, the water outlet terminal of the circulation tank couples a reflux pipe (12) which connects with a reflux control valve (14), a incurrent pipe (7) a sludge drainage pipe (8) connect the denitrification tank (1A) and external respectively, a outflow pipe (10) connects the reaction tank (1B) and external, a communication pipe connects the reaction tank (1B) and the denitrification tank (1A), and denitrification tank filler (16) is setted under the denitrification tank (1A).

Description

technical field [0001] The invention is a sewage treatment technology in the discipline of environmental engineering, and is an advanced technology applied to the treatment of small and medium-sized domestic sewage and industrial waste water. Background technique [0002] At present, biological treatment is the main method of sewage treatment, which can be divided into activated sludge method and biofilm method. Due to the mature technology and reliable equipment, the activated sludge method is widely used in large-scale sewage treatment plants, but it has problems of unstable operation and high energy consumption in small and medium-sized sewage treatment. The main forms of biofilm method are: biological filter, biological turntable and biological contact oxidation method, etc., which are mostly used for small and medium-sized sewage treatment. The biological turntable originated in the former Federal Republic of Germany. Due to its high treatment efficiency, convenient ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/08C02F3/10C02F3/00C02F3/02
CPCY02W10/10
Inventor 李先宁朱光灿吕锡武吴磊荆肇乾
Owner SOUTHEAST UNIV
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