Method for pre-treating polluted river water by adopting biological semi-coke aerated filter

A technology of biological aeration filter and biological filter, which is applied in the field of environmental protection, can solve the problems of low mechanical strength, small specific surface area, and low porosity, and achieve the effect of high mechanical strength, large specific surface area, and low price

Inactive Publication Date: 2011-04-13
OCEAN UNIV OF CHINA
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  • Application Information

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Problems solved by technology

However, the fillers currently used have the problems of low mechanical strength, small specific surface area, low porosity, difficulty in regeneration and relatively high price, which limits the wide application of biological aerated filters in the pretreatment of polluted river water to a certain extent.

Method used

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  • Method for pre-treating polluted river water by adopting biological semi-coke aerated filter
  • Method for pre-treating polluted river water by adopting biological semi-coke aerated filter

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Embodiment Construction

[0012] The implementation that the present invention adopts technical solution comprises the following steps:

[0013] (1) After the semi-coke is crushed by a crusher, the semi-coke particles with a particle size of 5-6mm are obtained after being sieved, rinsed with tap water and soaked for about 2-3 hours, and then cleaned with tap water, at 110 Dry at constant temperature.

[0014] (2) Mix the washed and dried semi-coke with 10-15% KOH solution (or NaOH solution) at a volume ratio of 1:3, and activate for 4 hours in a constant temperature shaking water bath with a set temperature of 50-70°C. After activation, wash with tap water until the pH of the cleaning solution is in the range of 7-8, and dry at a constant temperature of 110°C.

[0015] (3) Put the activated semi-coke into the biofilter, pass through the polluted river water to be treated to completely submerge the semi-coke in the filter, and add the sludge from the aeration tank of the urban sewage treatment plant as...

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Abstract

The invention relates to a method for pre-treating polluted river water by adopting a biological semi-coke aerated filter. The method comprises the following steps of: (1) activating semi-coke granules with granule diameter of 5 to 6 millimeters and 10 to 15 percent KOH solution (or NaOH solution) in a constant temperature shaking water bath of 50 to 70 DEG C to prepare activated semi-coke; (2) carrying out bio-membrane culture and domestication of the activated semi-coke by adopting a stuffy aeration and low flow water inlet combined mode; and (3) selecting equipment which mainly comprises an aeration pump, a water inlet pipe, an air distribution device, a supporting plate, a pebble supporting layer, a semi-coke filler layer, a water outlet pipe, a backwashing water inlet pipe, a backwashing water outlet pipe and the like. The method for removing pollutants from the polluted river water by adopting the biological aerated filter of the activated semi-coke filter material has good effect, low price and low running expense, and is a micro polluted water pre-treatment method with good development prospect.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and specifically relates to a method for pretreating polluted river water with a biological semi-coke aeration filter. Background technique [0002] With the rapid development of industrial and agricultural production and economy, the degree of urbanization and people's living standards have been continuously improved, and the increasing domestic sewage and industrial wastewater are due to low treatment efficiency or random discharge, which has led to the outskirts of some cities in our country or flow into the city. Most of the rivers in the district are seriously polluted, and the environmental and use functions of water bodies are gradually weakened. In view of the above situation, how to directly treat these polluted river water, make it a resource and become a new water source for the development of industry and agriculture in my country's water-scarce cities is an urgent pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30C02F3/10
CPCY02W10/10
Inventor 高孟春杨慧心佘宗莲赵从从王子超于恒胡波张优王悦静刘洁琼
Owner OCEAN UNIV OF CHINA
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