A Method for Effectively Removing Ammonia Nitrogen in Polluted Water

A technology for removing water and water bodies, applied in the field of water treatment, can solve the problems of reduced ammonia nitrogen removal performance, reduced bacterial biodegradation, easy to be washed, etc., and achieves the effect of reducing operating costs, wide application range and good effect.

Inactive Publication Date: 2011-11-30
HARBIN ENG UNIV
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Problems solved by technology

On the one hand, affected by water quality, water volume impact and environmental factors in the actual application process, the growth of dominant nitrifying bacteria on the surface of activated carbon is inhibited, resulting in a decrease in the number and activity of dominant nitrifying bacteria, and a decrease in the bi

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  • A Method for Effectively Removing Ammonia Nitrogen in Polluted Water
  • A Method for Effectively Removing Ammonia Nitrogen in Polluted Water
  • A Method for Effectively Removing Ammonia Nitrogen in Polluted Water

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Embodiment Construction

[0034] The source water polluted by nitrogen sources is first treated with conventional drinking water processes such as coagulation and sedimentation to remove larger suspended particles in the water; the sinking water then enters the modified IBAC filter to remove ammonia nitrogen through fixed nitrifying bacteria.

[0035] 1. The activated carbon used in the modified IBAC filter needs to be loaded and modified. The specific treatment process includes: (1) pretreatment of activated carbon: take a certain amount of activated carbon, soak it in water for 24 hours, take it out, dry it at 105°C for 2 hours, and take it out for use; (2) load of activated carbon: put the activated carbon after pretreatment Mix with 0.15-0.25mol / L ferric nitrate solution, shake in a constant temperature oscillation for 24 hours, and the shaking speed is 110r / min; (3) Post-treatment of activated carbon: wash the activated carbon loaded with iron with deionized water until neutral, and then shake at 1...

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Abstract

The invention provides a method for effectively removing ammonia nitrogen from a polluted water body, which comprises the following steps of: removing large suspended particles from source water polluted by a nitrogen source by the conventional drinking water treatment process; introducing into a modified nitrifying bacteria immobilization filter to remove the ammonia nitrogen by using immobilized nitrifying bacteria; and performing loading modification and nitrifying bacteria immobilization on activated carbon used in the nitrifying bacteria immobilization filter. By the method, the ammonia nitrogen in micro-polluted source water can be effectively removed at normal temperature and at a low temperature; meanwhile, operating cost is obviously reduced; the active element iron loaded by theactivated carbon is favorable for improving the ammonia nitrogen adsorption property of the activated carbon; and the nitrifying bacteria are stably attached. The method is suitable for treating water bodies with different pollution degrees, and is good in effect and wide in application range.

Description

technical field [0001] The invention relates to a water treatment method, mainly an advanced treatment method for drinking water, specifically a method for effectively treating source water polluted by nitrogen sources. Background technique [0002] In recent years, the environmental pollution of surface water in our country is worrying, and the water quality is declining year by year. Among the pollutants exceeding the standard, the frequency of ammonia nitrogen is very high. The safety of domestic water will be included in the country's binding control indicators for the discharge of major water pollutants in the "Twelfth Five-Year Plan". Aiming at the pollution of ammonia nitrogen, my country's newly promulgated drinking water hygiene standard (GB5749-2006) stipulates that ammonia nitrogen is equivalent to adopting foreign standards, and stipulates that ammonia nitrogen (in NH 3 The standard value of 0.5mg / L. [0003] Researchers have made some progress in the treatment...

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Application Information

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IPC IPC(8): C02F9/14C02F3/34C02F1/52C02F101/16
Inventor 任芝军米海蓉关涤宫林林马桂林
Owner HARBIN ENG UNIV
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