Biology processing apparatus capable of processing sewage at low-temperature with low carbon-nitrogen-ratio in cold region and method for processing sewage at low-temperature with low carbon-nitrogen-ratio in cold region

A low carbon-to-nitrogen ratio, biological treatment technology, applied in chemical instruments and methods, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc. The indicators are not up to standard, and the efficiency of simultaneous nitrogen and phosphorus removal is low, so as to alleviate the contradiction of sludge age, reduce effluent ammonia nitrogen, and facilitate regeneration

Active Publication Date: 2014-11-19
HARBIN INST OF TECH
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of low ratio of carbon source and nitrogen source in winter sewage in existing cold regions, low efficiency of synchronous denitrification and phosphorus removal in existing sewage treatment process and the nitrogen and phosphorus index of effluent after treatment is not up to standard, and provide a A biological treatment device for treating low-temperature low-carbon-nitrogen ratio sewage in cold regions and a method for treating low-temperature low-carbon-nitrogen ratio sewage in cold regions

Method used

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  • Biology processing apparatus capable of processing sewage at low-temperature with low carbon-nitrogen-ratio in cold region and method for processing sewage at low-temperature with low carbon-nitrogen-ratio in cold region

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specific Embodiment approach 1

[0019] Specific Embodiment 1: This embodiment is a biological treatment device for treating low-temperature low-carbon-nitrogen ratio sewage in cold regions, including a water storage tank 1, a pre-anoxic pool 2, an anaerobic pool 3, a first anoxic pool 4, and a second anoxic pool. Oxygen tank 5, first aerobic tank 6, second aerobic tank 7, third aerobic tank 8, sedimentation tank 9, aeration head 10, filler 11, agitator 12, water inlet pump 13, nitrification liquid return pump 14 , sludge return pump 15, first valve 16, second valve 17, third valve 18, fourth valve 32, outlet pipe 30, sludge discharge pipe 31 and excess sludge discharge pipe 33;

[0020]The water storage tank 1 communicates with the pre-anoxic pool 2, the anaerobic pool 3 and the first anoxic pool 4 respectively through the first valve 16 and the water inlet pump 13; the pre-anoxic pool 2, the anaerobic pool 3, the first The anoxic pool 4 and the second anoxic pool 5 are respectively equipped with a stirrer 1...

specific Embodiment approach 2

[0028] Embodiment 2: The difference between this embodiment and Embodiment 1 is that a biological treatment device for treating low-temperature low-carbon-nitrogen ratio sewage in cold regions is a plug-flow sewage biological treatment device. Others are the same as the first embodiment.

specific Embodiment approach 3

[0029] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the filler 11 is a combined suspension ball filler, the filler is divided into inner and outer double-layer spheres, the outer is a mesh sphere, and the inner is a rotating sphere. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention relates to a biology processing apparatus capable of processing sewage at low-temperature with low carbon-nitrogen-ratio in a cold region and a method for processing sewage at low-temperature with low carbon-nitrogen-ratio in the cold region, which relates to the biology processing apparatus for processing sewage and the method for processing sewage. According to the invention, problems that the ratio of carbon source and nitrogen source of sewage in winner at the cold region is low, the synchronization nitrogen and phosphorus removal efficiency in the current sewage processing technology is low, the index of nitrogen and phosphor in a processed effluent can not reach the standard can be solved. The apparatus comprises a water storage tank, a pre-conditioning hypoxia pool, an anaerobic pond, an anoxic pool, an aerobic tank, a sedimentation basin, an aeration head, a filling material, a stirrer, a water inlet pump, a reflux pump, a valve, an outlet pipe, a sludge discharge pipe and a residual sludge discharge pipe; The method comprises the following steps: 1)culturing microbe on a filling material; 2)adjusting operation parameter; 3)adjusting reflux ratio parameter; 4)passing the sewage through the pre-conditioning hypoxia pool, the anaerobic pond, the anoxic pool, the aerobic tank and the sedimentation basin for processing to obtain the processed water. The apparatus and the method can be used for construction and reconstruction of the sewage processing technology at low-temperature with low carbon-nitrogen-ratio in a north region.

Description

technical field [0001] The invention relates to a biological treatment device for treating sewage and a method for treating sewage. Background technique [0002] Our country has a vast territory and abundant fresh water resources, but due to our large population base, the per capita fresh water resources are very small. At the same time, with the rapid development of the economy, the intensification of pollutant discharge has led to serious water pollution in our country. According to the "2012 Bulletin on the State of the Environment in China", the coverage rate of water bodies below Class III in my country's major water systems is 31.1%, the water in lakes and reservoirs is as high as 38.7%, the pollution rate of groundwater is even higher, and the observation stations with poor water quality have reached 57.3% %. It can be seen from this that the water pollution problem facing our country is still severe, so it poses a greater challenge to the water treatment industry, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 赫俊国刘明超姜涛赵聪时贤
Owner HARBIN INST OF TECH
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