Denitrification deep bed filter double-carbon-source adding method and denitrification deep bed filter double-carbon-source adding system

A technology of denitrification filter and nitrification deep bed is applied in the field of double carbon source addition of denitrification deep bed filter to achieve the effect of saving production cost, operation cost, chemical cost and electric energy

Pending Publication Date: 2019-01-01
江苏道科环境科技有限公司
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Problems solved by technology

[0007] In order to solve the problem of economical and effective dosing of carbon sources, the present invention provides a

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  • Denitrification deep bed filter double-carbon-source adding method and denitrification deep bed filter double-carbon-source adding system

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Embodiment Construction

[0058] In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the embodiments and accompanying drawings.

[0059] Collect Q, COD, NO in denitrification filter 3 - , NO 2 - , pH, T, DO, ORP instrument parameters are provided to the central control system, and the central control system sends control signals to the dosing metering pump according to the above parameters. The central control system accurately calculates the dosage of carbon sources.

[0060] Step 1: Determine the carbon source dosage coefficient.

[0061] For the convenience of calculating the amount of carbon source, methanol is used as the external carbon source, and the reaction mode has the following three possibilities:

[0062] The first one, NO 3 - , NO 2 - 、CH 3 OH is completely decomposed into inorganic substances:

[0063] NO 3 - +0.833CH 3 OH→0.833CO 2 +0.5N 2 +1.167H 2 O+OH -

[0064] NO 2 - +0...

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Abstract

The invention relates to a denitrification deep bed filter carbon source adding method. The method collects Q, COD, NO3<-> and NO2<-> concentration parameters of a denitrification filter, and comprises the following steps: 1, determining a carbon source adding amount coefficient, wherein Cm=Kmin-KmaxNox; 2, determining a carbon source adding type: when (Nin-Nc)/Nin is greater than 0.81, q=Kmax.(Nin-Nc).Q/1000/C, wherein q is a carbon source adding amount and has a unit of L/h, Nin is sum of concentrations of nitrate nitrogen and nitrite nitrogen of incoming water and has a unit of mg/L, Nc isan internal control emission index of the sum of the concentrations of the nitrate nitrogen and the nitrite nitrogen and has a unit of mg/L, Q is the flow rate of the incoming water and has a unit ofm<3>/h, and C is a carbon source adding concentration; when (Nin-Nc)/Nin is less than or equal to 0.81, q=Kmin.Nin.Q/1000/C. The invention also discloses a denitrification deep bed filter carbon source adding system. The carbon source adding method provided by the invention can be used for quickly obtaining more accurate carbon source adding control data, thereby obviously reducing the chemical cost and electric energy of a carbon source; the denitrification effect of the denitrification deep bed filter is improved, the operation cost is lowered, the waste of the carbon source is reduced, andthe production cost is further lowered.

Description

[technical field] [0001] The invention relates to the technical field of sewage treatment, in particular to a method and system for adding double carbon sources to a denitrification deep bed filter. [Background technique] [0002] The overall requirements for the comprehensive management of the water environment in various river basins in my country are constantly improving. At present, many sewage plants in China cannot ensure that they fully meet the new standard discharge, especially in the case of TN standard discharge. The C / N ratio of incoming water from many sewage plants is low, and the removal rate of TN cannot be guaranteed. In order to ensure that the sewage plant meets the standards and effectively control the emission of TN, it is necessary to additionally increase the carbon source to reduce the emission of nitrate nitrogen and nitrite nitrogen, thereby reducing the emission of TN. [0003] The method of adding carbon source is divided according to the locatio...

Claims

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Application Information

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IPC IPC(8): C02F3/28
CPCC02F3/28C02F2209/40C02F2305/06C02F2209/001C02F2209/08C02F2209/06C02F2209/04C02F2209/22C02F2209/15
Inventor 李惠桂峰江姝瑶沈立茹于江水赵金君
Owner 江苏道科环境科技有限公司
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