New technology for treating eutrophic brackish water

A technology for eutrophication and brackish water, applied in aerobic and anaerobic process treatment, etc., can solve the problems of unsatisfactory effect of eutrophication and brackish water, low biological activity, etc., achieve long operation period, strengthen denitrification Functional and environmental benefits

Inactive Publication Date: 2014-06-18
天津市庆烁市政工程有限公司
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Problems solved by technology

However, conventional microorganisms have low biological activity in a high-salinity environment, and the effect of treating eutrophic brackish water is often unsatisfactory.

Method used

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  • New technology for treating eutrophic brackish water

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[0023] Implementation case: using the process of the present invention to treat a landscape water body in Tanggu, Tianjin, the influent water quality: TDS: 16000mg / L, COD: 210mg / L, NH3-N: 15mg / L, TN: 24mg / L, TP: 0.8mg / L L. The A / O two-stage multi-media aerated biological filter of the present invention is used for treatment, and the effluent water quality is: COD: 43mg / L, NH 3 -N: 0.8 mg / L, TN: 1.4 mg / L, TP: 0.2 mg / L.

[0024] It can be seen that the effluent water quality of this process meets the first-class standard of DB12 / 356-2008 of "Tianjin Municipal Sewage Comprehensive Discharge Standard", the first-class A standard of "Pollutant Discharge Standard of Urban Sewage Treatment Plant" GB 18918-2002, and the "Urban Sewage Recycling and Utilization Landscape Environment Water quality "GB / T 18921-2002.

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Abstract

The invention relates to a eutrophic brackish water treating technology employing an A / O two-segment type multi-medium biological aerated filter. In order to enhance the nitrogen-phosphorus removing effect on the high-salt eutrophic water and solve the problem of bad biological adaptability of the high-salt environment, the apparatus disclosed by the invention is subjected to technological modification on the basis of a routine biological aerated filter. By arranging the two-segment pool structure, the lower segment is not subjected to aeration and the upper segment is subjected aeration, so that denitrified microbe survival environment with the anoxic lower segment and the aerobic upper segment is formed. The material filtering lower segment of the filter is filled with an anthracite filter material and is inoculated with efficient halophilic denitrifying bacteria. The filter upper segment is filled with a NaCl modified zeolite filter material and is inoculated with efficient halophilic denitrifying bacteria. The new technology has the advantages of being novel, high in nitrogen and phosphorus removing efficiency, and low in energy consumption.

Description

technical field [0001] The invention belongs to a new technology for water pollution control, which is especially suitable for the treatment of eutrophic water body in high-salt environment. Background technique [0002] Tianjin is located in the Bohai Bay and is rich in surface water resources. However, due to seawater intrusion and strong evaporation, the surface water has a high salt content and belongs to brackish water. With the advancement of industrialization, the improvement of people's living standards, and the increasing use of chemical fertilizers in agriculture, the nitrogen and phosphorus content discharged into the water body is on the rise, and the eutrophication of the water body is becoming more and more serious. Biological treatment of polluted water has become the main means of pollution control because of its high treatment efficiency, low energy consumption, and no secondary pollution to the environment. However, conventional microorganisms have low bio...

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Application Information

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IPC IPC(8): C02F3/30
Inventor 时旭陈晓英刘恩秀崔凯杰
Owner 天津市庆烁市政工程有限公司
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