Method and complete device for zero-tendency discharge of reverse osmosis concentrated water of coal chemical industry enterprises

The technology of reverse osmosis concentrated water and reverse osmosis device is applied in the field of reverse osmosis concentrated water treatment system of chemical enterprises to achieve the effect of meeting water inlet requirements, improving efficiency and avoiding secondary pollution

Inactive Publication Date: 2017-03-15
TIANJIN UNITED ENVIRONMENTAL ENG DESIGN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of existing reverse osmosis concentrated water recovery technology in coal chemical enterprises, and propose a reverse osmosis concentrated water discharge system and device for coal chemical enterprises, through the introduction of catalytic oxidation method, high-efficiency biochemical method and ion exchange The technology realizes the efficient removal of refractory organic matter and calcium and ma...

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  • Method and complete device for zero-tendency discharge of reverse osmosis concentrated water of coal chemical industry enterprises
  • Method and complete device for zero-tendency discharge of reverse osmosis concentrated water of coal chemical industry enterprises

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Embodiment 1

[0050] A method for coal chemical industry reverse osmosis concentrated water to zero discharge is characterized in that it is carried out according to the following steps:

[0051] (1) Concentrated reverse osmosis water enters the regulating tank to homogenize the water quality and quantity;

[0052] (2) The effluent from the reverse osmosis concentrated water adjustment tank enters the catalytic oxidation tank, and the catalytic oxidation tank is filled with MnO 2 -CeO 2 -CoO / AC granular activated carbon catalyst, the filling amount is 1 / 3~3 / 4 of the effective volume of the catalytic oxidation tank; add sulfuric acid to the catalytic oxidation tank to adjust the pH value of concentrated water to 6.5, add 30% (w / w) hydrogen peroxide, and at the same time Access O 3 , O 3 with H 2 o 2 The molar ratio is controlled at 2:1; the residence time of reverse osmosis concentrated water in the catalytic oxidation tank is controlled to 60min;

[0053] The MnO 2 -CeO 2 -CoO / AC ac...

Embodiment 2

[0064] A complete set of equipment for reverse osmosis concentrated water to zero discharge in coal chemical enterprises, including reverse osmosis concentrated water pretreatment and collection unit, reverse osmosis concentrated water high-pressure membrane reuse treatment and collection unit, reverse osmosis concentrated water evaporation reuse and collection unit.

[0065] The reverse osmosis concentrated water pretreatment and collection unit includes: a reverse osmosis concentrated water regulating tank 1, a concentrated water delivery pump 2, a catalytic oxidation tank 6, an ion exchanger 7, a hydrolytic acidification tank 8, and an MBR tank connected in series through pipelines 9 and MBR produced water pump 13, each reaction tank is equipped with a liquid level gauge to realize the system liquid level high open low stop, the system automatically controls the operation through the program;

[0066] The reverse osmosis concentrated water high-pressure membrane recycling t...

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Abstract

The invention discloses a method and a complete device for zero-tendency discharge of reverse osmosis concentrated water of coal chemical industry enterprises. According to the method and the complete device disclosed by the invention, by introducing a catalytic oxidation method, a high-efficiency biochemical process and an ion exchange technique, high-efficiency removal of refractory organic substances and substances easily scaling such as calcium and magnesium in the reverse osmosis concentrated water is realized, and the problems of pollution of a high-pressure reverse osmosis membrane and scaling of an evaporation system are effectively solved. In an MnO2-CeO2-CoO/AC catalyst in the catalytic oxidation method, the ratio of weight parts of MnO2, CeO2, CoO toand AC is (1 to 10):(0.1 to 1):(0.1 to 1):100; a whole treatment system does not discharge sewage to the outside, and all components are recycled for process water, supplementary water of circulating cooling water and the like of coal chemical industry, so that the zero-tendency discharge of the reverse osmosis concentrated water of the coal and chemical engineering enterprises is realized, and secondary pollution to the environment is avoided.

Description

technical field [0001] The invention belongs to a reverse osmosis concentrated water treatment system of a chemical enterprise, and in particular relates to a method and a complete set of equipment for a coal chemical enterprise to discharge reverse osmosis concentrated water towards zero. Background technique [0002] The reverse osmosis concentrated water of coal chemical enterprises is the concentrated water produced after the mixing of process wastewater and domestic sewage in the factory area after conventional secondary treatment and advanced treatment of reverse osmosis membrane system. The water quality is characterized by high salt content, high content of refractory organic matter, biochemical Poor properties, high carbonate alkalinity, high hardness, direct discharge will cause serious pollution to the environment. [0003] Since the reverse osmosis concentrated water of the coal chemical industry contains a large amount of salt, it is impossible to further concen...

Claims

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Application Information

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IPC IPC(8): C02F9/14B01J23/889
CPCC02F9/00B01J23/8892C02F3/12C02F1/441C02F1/50C02F1/725C02F1/70C02F1/04C02F1/001C02F1/42Y02A20/131Y02P20/10
Inventor 石岩刘京伟段云霞赵金国岳金强孙凯侯霙霍永青许丹宇段晓雨
Owner TIANJIN UNITED ENVIRONMENTAL ENG DESIGN
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