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Method for treating water of polluted water source by using double-stage aeration bio-filter

A biological aerated filter, water source water technology, applied in the direction of sustainable biological treatment, biological water/sewage treatment, chemical instruments and methods, etc., can solve the problems of secondary pollution removal effect, easy clogging, etc., and achieve prolonged backwashing The effect of cycle, improved removal rate, and good interception effect

Inactive Publication Date: 2010-07-14
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the existing problems of easy clogging, easy secondary pollution and poor removal effect when using the existing biological aerated filter process to treat polluted water source water, and to provide a two-stage biological aerated filter Methods of treating polluted source water

Method used

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  • Method for treating water of polluted water source by using double-stage aeration bio-filter

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specific Embodiment approach 1

[0013] Specific Embodiment 1: In this embodiment, the method for treating polluted source water by using a double-stage biological aerated filter is carried out in a double-stage biological aerated filter, and the double-stage biological aerated filter contains a lower packing layer And the upper packing layer, the method of using the double-stage biological aerated filter to treat the polluted source water is carried out in the following way: the polluted source water to be treated enters the double-stage biological aerated filter directly from the water inlet pipe at the lower part, runs upwards, passes through The lower packing layer and the upper packing layer are aerated at the same time, the air-water ratio is between 0.2:1 and 2:1, and the hydraulic retention time of the polluted source water is 10 to 30 minutes. Among them, the lower packing layer is every 7 to 15 days Rinse once, and each time backwash with air-water combination, first air wash for 1~5min, then water w...

specific Embodiment approach 2

[0016] Embodiment 2: This embodiment differs from Embodiment 1 in that the hydraulic retention time of the polluted source water is 15-25 minutes. Other steps and parameters are the same as the specific method one.

specific Embodiment approach 3

[0017] Embodiment 3: This embodiment differs from Embodiment 1 to Embodiment 2 in that the gas-water ratio is between 0.5:1 and 1:1. Other steps and parameters are the same as those in one of ways 1 to 2.

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Abstract

The invention discloses a method for treating water of a polluted water source by using a double-stage aeration bio-filter, which relates to a method for treating the water of the polluted water source. The method solves the problems of easy blockage, easy production of secondary pollution and poor removal effect in the conventional method for treating the water of the polluted water source by using an aeration bio-filter process. The method comprises the following steps: allowing the water of the polluted water source to be treated to enter the double-stage aeration bio-filter, making the water flow upwards and aerating at the same time, controlling the hydraulic retention time so as to realize the treatment for the water of the polluted water source. When the water of the polluted water source is treated and the lightweight carrier of the lower stage is in a fluidized state, organic substances and intercepted suspensions can be efficiently removed, so the problem that the filler of the upper stage is easy to block due to small grain diameter is solved; meanwhile, because the natural clinoptilolite at the upper stage has large specific surface area, the removal rate of ammonia nitrogen is high, and the purpose of efficiently removing the ammonia nitrogen and the organic substances at the same time can be achieved; and moreover, the back flushing period is long and the secondary pollution cannot be caused.

Description

technical field [0001] The invention relates to a method for treating polluted source water. Background technique [0002] Since the end of the 1980s, the biological aerated filter process was introduced into the water supply treatment of polluted water sources, and due to the unique advantages of the biological aerated filter process, it has received more and more attention from people, and has gradually become an effective method for treating polluted raw water. One of the means. The biological aerated filter with submerged filler has a larger specific surface area than the elastic filler, which is not only cheap and easy to obtain, but also has a better treatment effect. Biological aerated filter has become a fast-growing new biotechnology due to its small footprint, strong pollutant removal ability, wide application range, flexible operation, easy management, and strong impact resistance. my country's national conditions of water treatment technology. [0003] The biol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/14C02F3/10
CPCY02W10/10
Inventor 赵志伟韩梅崔福义孙兴滨孙永锋
Owner HARBIN INST OF TECH
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