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Comprehensive treatment method for high-salinity high-concentration organic wastewater

A comprehensive treatment and organic wastewater technology, applied in the field of water treatment, can solve the problems such as unsatisfactory treatment effect, achieve the effect of reducing the probability of scaling on the plate, reducing viscosity, and improving treatment efficiency

Inactive Publication Date: 2019-06-07
南京华创环境技术研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Therefore, the technical problem to be solved in the present invention is to overcome the unsatisfactory defect that the wastewater treatment method in the prior art has an unsatisfactory treatment effect on high-salt and high-concentration organic wastewater, thereby providing a comprehensive treatment method for high-salt and high-concentration organic wastewater

Method used

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  • Comprehensive treatment method for high-salinity high-concentration organic wastewater
  • Comprehensive treatment method for high-salinity high-concentration organic wastewater
  • Comprehensive treatment method for high-salinity high-concentration organic wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] For a high-salt and high-concentration petrochemical wastewater, the total dissolved solids are 27493 mg / L, and the water quality indicators are shown in Table 1.

[0029] 2L of the waste water is introduced into the mixing reaction tank of the magnetic separation unit through the water inlet pipe, and 150mg / L magnetite and 50mg / L flocculant PAC are added to the mixing reaction tank, stirred evenly, and the power is turned on for magnetic separation treatment. The magnetic field strength is 1.5T, react for 2 hours, turn off the power, stand and separate, the solid enters the magnetic recovery system, and recovers nano-Fe 3 o 4 Reuse; waste water enters the pH adjustment pool through the outlet pipe, adjusts the pH value of the waste water to 3.5 and enters the electro-Fenton unit, turns on the power supply for electro-Fenton oxidation, the electrode used in the electro-Fenton unit is a ring structure, the cathode plate is graphite, and the anode The plate is made of me...

Embodiment 2

[0034] A high-salt and high-concentration petrochemical wastewater has a total dissolved solids of 27493mg / L, and the water quality indicators are shown in Table 2.

[0035]Put 2L of the waste water into the mixing reaction tank of the magnetic separation unit through the water inlet pipe, add 150mg / L hematite and 50mg / L flocculant PAC into the mixing reaction tank, stir evenly, turn on the power for magnetic separation treatment, and control The magnetic field strength is 1.5T, react for 1h, turn off the power, stand and separate, the solid enters the magnetic recovery system, and recovers nano-Fe 3 o 4 Reuse; waste water enters the pH adjustment tank through the outlet pipe, adjusts the pH value of the waste water to 4.0 and enters the electro-Fenton unit, turns on the power supply for electro-Fenton oxidation, the electrode used in the electro-Fenton unit is a ring structure, the cathode plate is graphite, and the anode The plate is made of metal iron, and the anode curren...

Embodiment 3

[0040] A high-salt and high-concentration petrochemical wastewater has a total dissolved solids of 27493 mg / L, and the water quality indicators are shown in Table 3.

[0041] 2L of the waste water is introduced into the mixed reaction tank of the magnetic separation unit through the water inlet pipe, and 200mg / L of nano-Fe is added to the mixed reaction tank. 3 o 4 and 50mg / L flocculant PAC, stir evenly, turn on the power for magnetic separation treatment, control the magnetic field strength to 1.0T, react for 3h, turn off the power, stand for separation, the solid enters the magnetic recovery system, recovers hematite for reuse; waste water Enter the pH adjustment tank through the outlet pipe, adjust the pH value of the wastewater to 3.0 and enter the electric Fenton unit, turn on the power supply for electric Fenton oxidation, the electrode used in the electric Fenton unit is a ring structure, the anode plate is activated fiber carbon, and the cathode plate is Metal iron, c...

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Abstract

The invention relates to the technical field of water treatment and discloses a comprehensive treatment method for high-salinity high-concentration organic wastewater. The method comprises the steps of subjecting the wastewater to be treated to magnetic separation treatment, Fenton oxidation treatment, blow-off treatment, electrocatalytic treatment and biochemical treatment sequentially and finally yielding water. According to the method, a variety of wastewater treatment technologies are properly optimized and combined, and thus, defects of single treatment technologies are made up, so that the method has the advantages that the effect of treating the organic wastewater is good, the reaction time is short, and a good reaction rate can be maintained under low-temperature conditions.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a comprehensive treatment method for high-salt and high-concentration organic wastewater. Background technique [0002] With the rapid development of petroleum, chemical and pharmaceutical industries, a large amount of refractory organic industrial wastewater has been produced. This type of wastewater has complex components. In addition to high COD, high ammonia nitrogen, and high salinity, it may also contain sulfur-containing substances and heavy metals. It has the characteristics of high content of organic pollutants, high toxicity, and refractory degradation. Even after being diluted hundreds of times, it is still difficult to cultivate microorganisms and cannot be directly subjected to biochemical treatment. In view of the poor biodegradability of this kind of wastewater, corresponding pretreatment methods can be used to improve the biodegradability of wastewater, so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/16
Inventor 张鹏唐美李杰陈丹刘福强李爱民
Owner 南京华创环境技术研究院有限公司
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