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Residual ammonia water treatment technology

A treatment process, ammonia water technology, applied in the field of water treatment, can solve problems such as difficult to deal with ammonia water, and achieve the effect of saving steam, saving subsequent operating costs, and saving initial investment capital

Inactive Publication Date: 2019-04-19
成都明道食品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing technology, it is difficult to effectively deal with ammonia water

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The present invention will be further described in detail in conjunction with specific embodiments below.

[0018] A process for treating residual ammonia, comprising the following steps:

[0019] Step 1, filtering the large particle impurities in the ammonia water through the grid;

[0020] Step 2, natural precipitation for 5h-8h, adding flocculant during the precipitation process, after the precipitation is completed, remove the floating matter on the surface;

[0021] Step 3, adding a pH regulator to the water to adjust the pH to neutral;

[0022] Step 4: Pump high-temperature circulating ammonia water into the top of the ammonia distillation tower to separate out part of the volatile ammonia;

[0023] Step 5, after collecting the volatile ammonia, liquefy the remaining water;

[0024] Step 6, add the liquefied water into the aeration tank, and aerate for 5h-8h;

[0025] Step seven, discharge after filtration.

[0026] In this embodiment, in Step 1, the grid has...

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Abstract

The invention discloses a residual ammonia water treatment technology. The technology comprises the following steps: 1, filtering out large-particle impurities in ammonia water through a grid; 2, naturally precipitating the ammonia water for 5-8 h, adding a flocculating agent in the precipitation process, and removing surface floaters after the precipitation is completed; 3, adding a pH adjuster to the ammonia water to adjust the ammonia water to be neutral; 4, pumping high-temperature circulating ammonia water into the top of an ammonia distillation tower to precipitate a part of the volatileammonia; 5, collecting the volatile ammonia, and liquefying remaining water; 6, adding the liquefied water into an aeration tank, and performing aeration treatment 5-8 h; and 7, filtering the aeratedwater, and discharging the filtered aerated water. The technology can effectively recover ammonia gas.

Description

technical field [0001] The invention belongs to the field of water treatment, and in particular relates to a residual ammonia water treatment process. Background technique [0002] During the coking process, all the water contained in the raw coal, the water synthesized by hydrogen and oxygen during the high-temperature coking process, and the water entering the system during the post-treatment process of coking generated gas all contain free ammonia and ammonium salts. This part of the water is collectively referred to as residual ammonia water. In addition to ammonia and ammonium salts, the remaining ammonia water also contains more toxic components such as phenols and cyanides, which must be biochemically treated before they can be reused or discharged. The purpose of residual ammonia water treatment is to separate the ammonia and ammonium salt in the residual ammonia water, and then obtain qualified wastewater that can be biochemically treated. However, in the existing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/16C02F101/18C02F101/34
CPCC02F9/00C02F1/001C02F1/048C02F1/20C02F1/5281C02F1/66C02F3/02C02F2101/16C02F2101/18C02F2101/345C02F2209/02C02F2209/44C02F2301/08
Inventor 洪文刊
Owner 成都明道食品有限公司