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Treatment method for high-salinity high-concentration organic waste water

A technology of organic wastewater and treatment methods, applied in the directions of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., which can solve the problems of high energy consumption, difficulty in large-scale application, and increased treatment costs , to achieve the effect of simple processing technology

Inactive Publication Date: 2014-12-10
BEIJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The single use of physical methods has relatively limited treatment effects and strong specificity, and it is difficult to deal with high-concentration organic wastewater with complex components
Among them, methods such as adsorption, coagulation, and air flotation simply separate pollutants from water, and the adsorbent needs to be treated. On the one hand, it increases the cost of treatment, and on the other hand, it may cause secondary pollution; It consumes a lot of energy and is mostly used in laboratory experiments, but it is difficult to apply it in large-scale industrial wastewater treatment.
Common chemical methods include chemical oxidation and electrolysis. Chemical oxidation mainly includes Fenton oxidation, which has a strong oxidation ability, especially for some difficult-to-treat or biologically toxic industrial wastewater, which can effectively remove organic matter in the water phase; However, this method has high requirements on the pH of the wastewater, and the conditions are strict.
However, the electrolysis method has high energy requirements, which increases energy consumption in the actual industrial wastewater treatment and has poor applicability.
The biodegradation method is limited by the high concentration of salt in the wastewater, which has certain toxicity and inhibition to the growth of microorganisms, which limits the application of biological methods in the treatment of high-salt wastewater
At present, there are few studies on the combined use of multiple methods for the treatment of high-salt and high-concentration wastewater. Therefore, it is necessary to develop multiple technologies for combined use. The advantages of various methods can be used to effectively reduce the salinity and organic matter concentration of wastewater.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 79.93g Al 2 (SO 4 ) 3 18H 2 O was dissolved in 100mL water to make 1.2mol / L A solution, and 78.83g CaCl 2 ·6H 2 O was dissolved in 100mL water to make 3.6mol / L B solution, and 0.01g Ca(OH) 2 Dissolve in 100mL water to make 0.002mol / L C solution;

[0019] Put 50mL of solution A in a 1000ml three-necked flask, heat it in a constant temperature electric heating mantle at 95°C for 20min, then add 40mL of solution B into the three-necked flask at a dropping speed of 0.5mL / min and a stirring speed of 500r / min, and stop heating after heating for 15min , and stirred for 15min under the condition of 1000r / min to obtain the mixed solution D;

[0020] Add 30mL of solution C to solution D, stir at 500r / min for 10min to obtain suspension E; transfer suspension E to a suction filtration flask for suction filtration, collect the filtrate and transfer it to a three-neck flask, Aging at ℃ for 4 hours to obtain a mixed solution F;

[0021] Weigh 5.00g of acrylamide, 1.00g of acry...

Embodiment 2

[0028] 79.93g Al 2 (SO 4 ) 3 18H 2 O was dissolved in 100mL water to make 1.2mol / L A solution, and 78.83g CaCl 2 ·6H 2 O was dissolved in 100mL water to make 3.6mol / L B solution, and 0.01g Ca(OH) 2 Dissolve in 100mL water to make 0.002mol / L C solution;

[0029] Put 50mL of solution A in a 1000ml three-necked flask, heat it in a constant temperature electric heating mantle at 95°C for 20min, then add 40mL of solution B into the three-necked flask at a dropping speed of 0.5mL / min and a stirring speed of 500r / min, and stop heating after heating for 15min , and stirred for 15min under the condition of 1000r / min to obtain the mixed solution D;

[0030] Add 30mL of solution C to solution D, stir at 500r / min for 10min to obtain suspension E; transfer suspension E to a suction filtration flask for suction filtration, collect the filtrate and transfer it to a three-neck flask, Aging at ℃ for 4 hours to obtain a mixed solution F;

[0031] Weigh 5.00g of acrylamide, 1.00g of acry...

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Abstract

The invention discloses a treatment method for high-salinity high-concentration organic waste water. The treatment method comprises the following steps: respectively dissolving Al2(SO4)3.18H2O, CaCl2.6H2O and Ca(OH)2 in water so as to obtain solutions A, B and C, heating and mixing the solution A and the solution B to obtain a solution D, adding the solution C to obtain a solution E, and curing to obtain a solution F; dissolving acrylamide, acrylic acid and 2-acrylamide-2-methylpro panesulfonic acid in water, mixing, regulating pH, introducing nitrogen to displace oxygen to obtain a solution G; mixing the ammonium sulfate and tetramethylethylenediamine to obtain a solution H; mixing the solution G and the solution H to obtain a solution I, and placing and irradiating under ultraviolet light to obtain a solution J; agitating and mixing to-be-treated waste water, the solution F and the solution J to obtain a solution K, centrifuging the solution K, obtaining supernatant, heating and distilling the supernatant, and collecting distillate to obtain the treated outlet water. The technology is simple, and organic substances and salt in the organic waste water can be effectively removed.

Description

technical field [0001] The invention belongs to the technical field of organic wastewater treatment, in particular to a treatment method for high-salt and high-concentration organic wastewater. Background technique [0002] High-salt and high-concentration organic wastewater is mainly produced in energy, mining, chemical, printing and dyeing, pharmaceutical and other industries. This type of wastewater has many types, complex chemical composition, high concentration of organic matter, high salt content, high COD concentration, BOD / COD is less than 0.3, and poor biodegradability; it may also contain aromatic compounds, sulfides, heavy metals, etc. Toxic substances; most of them have high chroma and peculiar smell, and it is difficult to obtain satisfactory results by directly using traditional wastewater treatment technology. Because the treatment of this kind of wastewater is very difficult, it has caused great troubles to enterprises in terms of treatment technology and tr...

Claims

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Application Information

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IPC IPC(8): C02F9/10
Inventor 豆俊峰袁静丁爱中郑蕾许新宜
Owner BEIJING NORMAL UNIVERSITY
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