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Treatment method of organic amine-containing wastewater

A treatment method, organic amine technology, applied in water/sewage treatment, water treatment parameter control, water/sewage multi-stage treatment, etc., can solve problems such as poor biodegradability, low removal rate, and difficult treatment of organic amines

Inactive Publication Date: 2021-04-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The invention relates to a treatment method for wastewater containing organic amines, which mainly solves the problem of high suspended matter content and low removal rate in such wastewater, especially for wastewater containing specific organic amines, which has low removal rate, poor biodegradability, and contains highly toxic organic compounds. Difficult problems with amines

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The content of suspended solids in the crystallization mother liquid filtrate was 3978mg / L, of which the content of silicon dioxide was 242mg / L, the pH was 11.2, the COD was 1368ppm, and the total nitrogen was 1009ppm.

[0028] Treatment method: Add 186g of polyaluminum chloride and 5.7g of anionic polyacrylamide (molecular weight: 3 million to 6 million) to 1000L crystallization mother liquor, adjust the pH of the crystallization mother liquor filtrate to 7.2, let it stand for 24 hours, and take the supernatant Liquid 100L, injected into the membrane separation device, the system pressure is 3.6bar, the room temperature is 12°C, and the flux is 789L / (m 2 h) Roll-type RO membrane, every 60 seconds during the operation, switch to the clear liquid feed water for 5 seconds of flushing, the flushing water enters the clear liquid storage tank, and a total of 72L permeate waste water is obtained through efficient treatment.

[0029] After treatment: the COD of the permeate is...

Embodiment 2

[0031] Treatment of waste liquid is the same as in Example 1.

[0032] Treatment method: Add 213g of polyaluminum sulfate and 2.8g of non-ionic polyacrylamide (molecular weight: 3 million to 6 million) to 1000L crystallization mother liquor, adjust the pH of the crystallization mother liquor filtrate to 6.9, let it stand for 24 hours, and take the supernatant Liquid 100L, poured into the membrane separation device, the system pressure is 3.7bar, the room temperature is 13°C, and the flux is 789L / (m 2 h) Roll-type RO membrane, every 60 seconds during the operation, switch to the clear liquid feed water for 5 seconds of flushing, the flushing water enters the clear liquid storage tank, and a total of 73L permeate wastewater is efficiently treated.

[0033]After treatment: the COD of the permeate is 20ppm, the organic matter removal rate is 98.5%, the suspended matter content of the solution is 5.1mg / L, the silicon dioxide content is 4mg / L, the total nitrogen is 16.5ppm, and the ...

Embodiment 3

[0035] Treatment of waste liquid is the same as in Example 1.

[0036] Treatment method: Add 149g of polyaluminum sulfate and 3.7g of cationic polyacrylamide (molecular weight: 3 million to 6 million) to 1000L of crystallization mother liquor, adjust the pH of the filtrate of crystallization mother liquor to 7.6, let it stand for 24 hours, and take the supernatant 100L, poured into the membrane separation device, the system pressure is 3.6bar, the room temperature is 13°C, and the flux is 789L / (m 2 h) roll-type RO membrane, every 60 seconds during the operation, switch to the clear liquid feed water for 5 seconds of flushing, the flushing water enters the clear liquid storage tank, and a total of 75L permeate waste water is efficiently treated.

[0037] After treatment: the COD of the permeate is 19ppm, the organic matter removal rate is 98.5%, the suspended matter content of the solution is 5.6mg / L, the silicon dioxide content is 4mg / L, the total nitrogen is 14.6ppm, and the ...

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PUM

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Abstract

The invention relates to a treatment method of organic amine-containing wastewater, and solves the problem of washing wastewater treatment in a molecular sieve production process. According to the method, firstly, the content of suspended solids in the molecular sieve washing wastewater is reduced by adopting a flocculant complexing method, then organic amine pollutants which are difficult to degrade and high in toxicity in the wastewater are removed by adopting a membrane separation method, and the treated wastewater can be discharged after reaching the standard. The method has the advantages of simple steps, advanced process, low energy consumption and low material consumption, can be used for treating organic amine-containing wastewater with low concentration and low recoverable value in the molecular sieve production process, and has favorable economic benefit, social benefit and environmental benefit.

Description

technical field [0001] The invention relates to a treatment method for waste water containing organic amine, in particular to a treatment method for washing waste water produced in the molecular sieve production process, and belongs to the field of environmental protection. Background technique [0002] Organic amines generally refer to the chemical reaction of organic substances and ammonia to produce organic substances containing amine groups. Organic amine bases and / or organic amine salts are used as templates and are widely used in the synthesis of special types of molecular sieves such as nano and mesoporous. Such substances generally have the characteristics of strong toxicity, high unit price, and large pollution. Therefore, in the process of synthesis and washing of special types of molecular sieves, a large amount of waste water containing organic amines is inevitably produced. This type of wastewater has high chemical oxygen demand (COD), high total nitrogen conte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F101/38
CPCC02F9/00C02F1/66C02F1/5245C02F1/56C02F1/444C02F1/441C02F2101/38C02F2209/06C02F2209/08C02F2209/10C02F2303/14
Inventor 李晓韬王德举赵申左煜丛文洁
Owner CHINA PETROLEUM & CHEM CORP