Method and system for processing waste liquid

A technology for waste liquid and alkali treatment, which is applied in combustion methods, chemical instruments and methods, and neutralized water/sewage treatment. The effect of improving processing efficiency

Inactive Publication Date: 2014-10-29
新疆梅花氨基酸有限责任公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Therefore, the current treatment methods for waste liquid still need to be improved.

Method used

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  • Method and system for processing waste liquid
  • Method and system for processing waste liquid
  • Method and system for processing waste liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Material: waste liquid from an amino acid production plant.

[0058] refer to figure 1 , the main steps are as follows:

[0059] 1) Mix calcium oxide at a feeding speed of 1895kg / h and waste liquid at a flow rate of 29.167t / h in a powder-liquid jet mixer, and stir evenly. The salt in the waste liquid and calcium oxide react as follows:

[0060] CaO+H 2 O+(NH 4 ) 2 SO 4 =CaSO 4 2H 2 O+2NH 3 ↑,

[0061] Collect the precipitate and supernatant, release the NH 3 It enters the ammonia buffer storage tank through the collection pipe, and then enters the spray scrubber through the fan, and uses water for circular washing to absorb ammonia;

[0062] 2) Mix the sediment with coal with a softening point greater than 1100 degrees Celsius at a weight ratio of 7.5:1, and then incinerate in a rotary kiln for 60 to 70 minutes at an incineration temperature of 850 degrees Celsius and a pressure of -1 mbar to obtain salt and untreated coal. fuel;

[0063]3) Incinerate the un...

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Abstract

The invention discloses a method and a system for processing a waste liquid. The method for processing a waste liquid comprises: contacting the waste liquid with a basic oxide to obtain a precipitate and a supernatant; burning the precipitate and the supernatant to obtain a salt and flue gas; and collecting the flue gas. The method for processing the waste liquid is capable of effectively processing waste liquids, and has the advantages of low cost, simple technology, high processing efficiency, no pollution to environment, high comprehensive utilization benefit and the like.

Description

technical field [0001] The present invention relates to methods and systems for treating waste liquids. Background technique [0002] A large amount of waste liquid is produced in the process of industrial production, which is generally treated by biochemical or physical methods. However, for some industrial waste liquids, such as high-concentration organic wastewater, its chemical oxygen demand (Chemical Oxygen Demand, COD) is as high as ten Tens of thousands or even millions, and contain a large amount of salts and other substances, the traditional waste liquid treatment technology is difficult to apply to this, there are problems such as high cost, complicated process, low treatment efficiency, polluting the environment, and low comprehensive utilization benefits. [0003] Therefore, the current treatment methods for waste liquid still need to be improved. Contents of the invention [0004] The present invention aims to solve one of the above-mentioned technical proble...

Claims

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Application Information

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IPC IPC(8): C02F1/66C01D5/00C01F11/46F23G7/00
Inventor 娄长征李东凯李凤舞
Owner 新疆梅花氨基酸有限责任公司
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