Method for treating folic acid wastewater

A treatment method and technology for wastewater, applied in water/sewage treatment, natural water treatment, water treatment parameter control, etc., can solve the problems of complex operation, high energy consumption and high cost, and achieve a simple operation method, low cost and energy saving. Effect

Inactive Publication Date: 2019-07-26
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the technical problems existing in the above-mentioned prior art, the present invention provides a treatment method for folic acid wastewa

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for treating folic acid wastewater

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0027] Example 1

[0028] First, take 200ml of folic acid wastewater, the pH of the folic acid wastewater is 0.5, the COD value is 2000mg / L, the ammonia nitrogen value is 210mg / L, and the total dissolved solids is 25000mg / L; sodium hydroxide is added to adjust the pH to 4.3 to obtain Solution; Then, pour the solution to be processed into the filter tank, and filter with a 0.45μm filter membrane; after the filtration is completed, the filtrate is obtained; then the filtrate is poured into the rotary evaporator to ensure that the pressure is controlled at 0.04Mpa and the temperature is 80 ℃, the concentration rate is 50%. After the distillation, the condensate is obtained, that is, the effluent is obtained.

[0029] The content of COD, ammoniacal nitrogen and TDS in the effluent of Example 1 was measured. The removal rate of COD was 97.9%, the removal rate of ammoniacal nitrogen was 93.9%, and the removal rate of TDS was greater than 99%.

Example Embodiment

[0030] Example 2

[0031] First, take 100ml of folic acid wastewater. The pH of folic acid wastewater is 1.1, COD value is 9500mg / L, ammonia nitrogen value is 330mg / L, total dissolved solids is 42000mg / L; sodium hydroxide is added, and the pH is adjusted to 4.2 to obtain Solution; Then, pour the solution to be processed into the filter tank and filter with a 0.22μm filter membrane; after the filtration is completed, the filtrate is obtained; then the filtrate is poured into the rotary evaporator to ensure that the pressure is controlled at 0.06Mpa and the temperature is 90 ℃, the concentration rate is 60%. After the distillation, the condensate is obtained, that is, the effluent is obtained.

[0032] The content of COD, ammonia nitrogen and TDS in the effluent of Example 2 was measured. The removal rate of COD was 99.4%, the removal rate of ammonia nitrogen was 95.7%, and the removal rate of TDS was greater than 99%.

Example Embodiment

[0033] Example 3

[0034] First, take 500ml of folic acid wastewater, the pH of folic acid wastewater is 2.3, COD value is 30000mg / L, ammonia nitrogen value is 600mg / L, total dissolved solids is 60000mg / L; sodium hydroxide is added and the pH is adjusted to 4.0 to obtain Solution; Then, pour the solution to be processed into the filter tank and filter with a 0.45μm filter membrane; after the filtration is completed, the filtrate is obtained; then the filtrate is passed into the MVR reactor to ensure that the pressure is controlled at 0.05Mpa and the temperature is 85 ℃, the concentration rate is 50%. After the distillation, the condensate is obtained, that is, the effluent is obtained.

[0035] The content of COD, ammonia nitrogen and TDS in the effluent of Example 3 was measured. The removal rate of COD was 99.8%, the removal rate of ammonia nitrogen was 98.5%, and the removal rate of TDS was greater than 99%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a method for treating folic acid wastewater. The method for treating the folic acid wastewater includes the steps of firstly, regulating the pH value of the folic acid wastewater to 4.0-4.5 so as to obtain a solution to be treated; then, filtering the solution to be treated so as to obtain filtrate; finally, subjecting the filtrate to reduced-pressure distillation so as to obtain effluent up to the discharge standards. The method for treating the folic acid wastewater has the advantages that treating the folic acid wastewater by regulation of the pH value, filtering andreduced-pressure distillation, the method decreases the content of COD, ammonia nitrogen, TDS and total nitrogen in the folic acid wastewater and avoids over-high cost for treating the folic acid wastewater and environmental pollution caused by substandard treatment of the folic acid wastewater; the method is convenient to operate and manage, effective in treatment at a low cost and environment friendly, and the effluent can be up to the discharge standards directly.

Description

technical field [0001] The invention belongs to the technical field of industrial wastewater treatment, in particular to a treatment method for folic acid wastewater. Background technique [0002] Folic acid (folate, folic acid), also known as vitamin B9, vitamin Bc, vitamin M, pteroyl glutamic acid, is a water-soluble vitamin and an important nutrient for the growth and development of humans and animals. However, natural folic acid is extremely unstable and is easily oxidized by sunlight and temperature. Humans and animals do not get much folic acid from food. Therefore, synthetic folic acid is widely used in medical treatment, breeding, food and other industries, and the market has a great demand for synthetic folic acid. At present, the method used in the industrial synthesis of folic acid is mainly to react with 1,1,3-trichloroacetone and p-aminotoluoyl-L-glutamic acid, add 2,4,5-triamino-6-hydroxypyrimidine, adjust And maintain the pH to 3.5, after suction filtration,...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C02F9/10C02F103/36
CPCC02F1/001C02F1/04C02F1/041C02F1/66C02F9/00C02F2103/36C02F2209/02C02F2209/03C02F2209/06C02F2209/08C02F2209/10C02F2209/14C02F2301/063
Inventor 袁林江孟元黄崇
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products