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Method for strengthening biological anaerobic treatment of high-salinity and high-concentration organic wastewater

A technology for organic wastewater and anaerobic treatment, applied in anaerobic digestion treatment, biological treatment equipment, biological water/sewage treatment, etc., can solve problems such as no solution, achieve faster start-up, reduce sludge loss, and stabilize removal Effect

Inactive Publication Date: 2016-08-17
南大环保科技服务南通有限公司
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Problems solved by technology

However, there is still no ideal solution for how to use biological methods to achieve stable and efficient treatment of high-salt and high-organic wastewater.

Method used

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  • Method for strengthening biological anaerobic treatment of high-salinity and high-concentration organic wastewater

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Embodiment Construction

[0022] In the figure: 1—reactor shell, 2—three-phase separator, 3—suspension medium packing layer, 4—iron shavings packing layer, 5—water distributor, 6—nutrient adjustment tank, 7—inlet pump, 8— Internal return pump in the middle, 9—outlet return pump, 10—diffuser, 11—sludge discharge pipe, A—three-phase separation area, B—sludge suspension area, C—sludge expansion area, a—high-salt wastewater, b—outlet water, c—biogas, d—external return of effluent, e—internal return in the middle.

[0023] The implementation of the present invention will be illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0024] Such as figure 1 Shown is a working principle diagram of an enhanced anaerobic bioreactor for treating high-salt and high-concentration organic wastewater. The enhanced anaerobic reactor mainly includes a cylindrical reactor s...

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Abstract

The invention discloses a method for strengthening the biological anaerobic treatment of the high-salinity and high-concentration organic wastewater. An iron shaving packing layer and a suspension medium packing layer are respectively filled at the middle-lower part and the upper part of an anaerobic reactor. Meanwhile, the anaerobic reactor processes the high-salinity wastewater in the compound mode of hierarchical reflux. According to the method, the high-salinity and high-concentration organic wastewater is directly subjected to biological treatment and is free from the desalination pretreatment, so that the investment cost is low. Based on the strengthening effect of the iron shaving packing layer and the suspension medium packing layer arranged in the reactor, the starting speed of the high-salinity wastewater biological treatment is accelerated, and the sludge granulation is promoted. Meanwhile, the sludge loss is effectively reduced. With the presence of the iron reduction effect in the reactor, the wastewater decolorization effect is good. Meanwhile, the acidification defect during the anaerobic operation process is overcome. A biological membrane formed on the surface of iron shaving packing layer and the suspension medium packing layer served as a carrier together form an anaerobic biological membrane moving bed. Therefore, the resistance to impact load and the salinity fluctuation resistance of the system are greatly enhanced.

Description

technical field [0001] The invention relates to the technical field of high-salt wastewater treatment, in particular to a method for strengthening biological anaerobic treatment of high-salt and high-concentration organic wastewater. Background technique [0002] High-salinity wastewater refers to wastewater with a total salt content of at least 1%, which is one of the refractory wastewater. With the acceleration of my country's industrialization process, high-salt wastewater will be produced in many production areas, such as printing and dyeing, papermaking, chemical industry, pesticides, oil extraction, seafood processing, etc. Such high-salt wastewater seeps into the soil system, which will make soil organisms, plants Death due to dehydration has caused the disintegration of the soil ecosystem, and high-salt wastewater usually contains other high-concentration organic matter or nutrients. If it is discharged directly without treatment, it will bring greater pressure to the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/28
CPCC02F3/2853C02F2203/006Y02E50/30
Inventor 何锐何亮亮吴文睿郑承兵陈辉吕路
Owner 南大环保科技服务南通有限公司
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