Concentrated ammonia rectification apparatus for treating titanium dioxide industrial wastewater

A technology for industrial wastewater and concentrated ammonia, applied in the direction of heating water/sewage treatment, etc., can solve the problems of low conversion efficiency of free ammonia nitrogen, inability to achieve degradation effect, high operating costs, etc., achieve small footprint, low treatment cost, and realize separation effect

Inactive Publication Date: 2015-08-26
JIANGSU XIAHANG ENVIRONMENTAL ENG
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Problems solved by technology

However, due to the huge investment cost, complicated maintenance, high operating cost, and secondary pollution to the environment, the above method is rarely used in large-scale industrial sewage treatment projects.
The conventional ammonia nitrogen stripping process is greatl...
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Abstract

The present invention relates to a concentrated ammonia rectification apparatus for treating titanium dioxide industrial wastewater. The concentrated ammonia rectification apparatus comprises a pre-heater and a steam stripping deamination tower, wherein the steam stripping deamination tower comprises a tower kettle, the tower kettle is sequentially divided into a rectification section, a wastewater feeding section, a stripping separation section and a residual liquid separation section from top to bottom, turbogrid type trays are arranged in the tower kettle, the turbogrid type tray is provided with a plate type gas separation membrane, the bottom portion of the tower kettle is provided with a wastewater outlet, and a high temperature steam inlet is arranged on the side surface below the outer portion of the tower kettle. The apparatus of the present invention has characteristics of low cost, high ammonia nitrogen conversion efficiency, and no secondary pollution of the treated wastewater.

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  • Concentrated ammonia rectification apparatus for treating titanium dioxide industrial wastewater
  • Concentrated ammonia rectification apparatus for treating titanium dioxide industrial wastewater

Examples

  • Experimental program(1)

Example Embodiment

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0025] like figure 1 and figure 2 As shown, a kind of concentrated ammonia rectification device for treating titanium dioxide industrial wastewater according to the present invention includes a preheater 1 and a stripping deamination tower 2, and the stripping deamination tower 2 includes a tower still 3 , the tower kettle 3 is divided into a rectification section 4, a waste water feed section 5, a separation section 6 and a raffinate separation section 7 from top to bottom, and a water inlet pipe 8 is arranged on the outer side of the tower kettle 3, and The upper part of the water inlet pipe 8 is provided with three water inlets 9, and an ammonia reflux pipe 10 is additionally provided on the outer side of the tower kettle 3, and a through-flow tray 11 is provided inside the tower kettle 3, and in the through-flow type A plate-type gas separation membrane 12 is provided on the tray 11, and the through-flow tray 11 is composed of an S-shaped tray base 13, and a mass transfer hole 14 is provided on the S-shaped tray base 13. The top of still 3 is provided with ammonia gas outlet 15, is provided with waste water outlet 16 at the bottom of described tower still 3, is provided with high-temperature steam inlet 17 on the side below outside described tower still 3; Table 18 and pressure gauge 19; a first liquid level gauge 20 and a second liquid level gauge 21 are arranged outside the lower part of the tower kettle 3; an upper sight glass 22 is arranged on the top of the tower kettle 3, and 3 The lower part is provided with a lower viewing mirror 23; a preheater 1 is provided beside the tower kettle 3, and the preheater 1 is connected to the stripping deamination tower 2 through a pipeline; the plate type gas separation membrane 12 The pore size of the membrane wall is 0.1nm-0.5nm. The invention has the advantages of simple overall structure, low cost, high ammonia nitrogen conversion efficiency, and no secondary pollution to the treated wastewater.
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Owner:SHANGHAI MARITIME UNIVERSITY
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