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Electrocoagulation advanced treatment system and method for biochemically treating effluent of waste water of diosgenin saponins

A technology for turmeric saponin and advanced treatment, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problem of high operating costs and unstable removal of activated carbon adsorption and membrane methods Organic matter, high cost of chemicals, etc., to achieve stable treatment effect, easy transformation, and low energy consumption

Inactive Publication Date: 2014-07-30
TIANJIN URBAN CONSTR COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But these methods still have the following problems: H 2 o 2 1. Although the NaClO oxidation method has a certain removal rate for chroma, it cannot remove organic matter stably, and the cost of simply adding chemicals is high; the activated carbon adsorption method and membrane method have high operating costs and complicated operations

Method used

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  • Electrocoagulation advanced treatment system and method for biochemically treating effluent of waste water of diosgenin saponins
  • Electrocoagulation advanced treatment system and method for biochemically treating effluent of waste water of diosgenin saponins

Examples

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Effect test

Embodiment 1

[0037] Such as figure 2 As shown, an electric coagulation advanced treatment system for turmeric saponin wastewater biochemical treatment effluent, including an electric coagulation tank 1, an inclined plate sedimentation tank 2 and a coal sand filter tank 3;

[0038] The electric coagulation tank 1 is provided with a water inlet perforated pipe 4, the water inlet end of the water inlet perforated pipe 4 is connected with the water inlet pump 5, and the water outlet of the electric coagulation tank 1 adopts the first overflow weir 6, and the first overflow weir There is a first scum baffle in front of 6, and the electric coagulation tank 1 is connected to the inclined plate sedimentation tank 2 through the first connecting pipe 7, and one end of the first connecting pipe 7 is connected to the first overflow weir 6 on the water outlet side. A sump 8 is connected, and the other end is connected with the water inlet of the inclined plate sedimentation tank 2. There is a branch p...

Embodiment 2

[0053] The difference between this example and Example 1 is that the flow rate of the turmeric saponin wastewater biochemical treatment effluent in step (1) is 0.73m 3 / h, the pH value is 6.9-7.1, the COD is 223-310mg / L, and the chromaticity is 100 times. The hypochlorite solution described in step (2) is a KClO solution with a mass concentration of 30%. The amount is: add 2 milliliters of the KClO solution to every liter of turmeric saponin wastewater biochemical treatment effluent, run continuously for 8 hours, and carry out dynamic monitoring. The chromaticity is 50 times, and both COD and chromaticity reach the standard stably.

Embodiment 3

[0055] The difference between this example and Example 1 is that the flow rate of the turmeric saponin wastewater biochemical treatment effluent in step (1) is 0.73m 3 / h, pH value is 6.9~7.0, COD is 318~432mg / L, chromaticity is 100 times, and the hypochlorite solution described in step (2) is the Ca(ClO) that mass concentration is 10% 2 Solution, its dosage is: add the described Ca(ClO) of 8 milliliters in every liter of turmeric saponin wastewater biochemical treatment effluent water 2 Solution, continuous operation for 8 hours, dynamic monitoring, system effluent water quality: pH value is 6.9-7.0, COD is 120-240mg / L, chromaticity is 50 times, COD and chromaticity are stable up to the standard.

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Abstract

The invention provides an electrocoagulation advanced treatment system and method for biochemically treating effluent of waste water of diosgenin saponins. A cheap iron plate is used as a polar plate. Chromaticity and organic matters are effectively removed through flocculation of nascent state of ferric oxides generated by electrocoagulation. After pypocholoride is added into the electrocoagulation effluent, redox reaction further occurs by ferrous ions, organic matters and the like with the pypocholoride to strengthen removal of chromaticity and organic matters in the effluent. The treatment method provided by the invention sequentially comprises the steps of electrocoagulation, oxidation of pypocholoride, solid-liquid separation in a plate sedimentation tank, and filtration by double filters of sand coal. According to the electrocoagulation advanced treatment system and method for biochemically treating effluent of waste water of diosgenin saponins provided by the invention, the method combining electrocoagulation with oxidation of pypocholoride effectively solves the problem that organic matters and chromaticity in treatment of effluent in conventional biochemical treatment of waste water of diosgenin saponins are hard to meet the standard, is simple to operate and can easily improve a current wastewater treatment process. Treated water can be reused in the production process of diosgenin saponins, so that environmental pollution is greatly reduced, and sustainable use of water resource is enhanced.

Description

technical field [0001] The invention belongs to the technical field of industrial wastewater advanced treatment, in particular to an electrocoagulation advanced treatment system and method for turmeric saponin wastewater biochemical treatment effluent. Background technique [0002] Turmeric, scientifically known as Dioscorea shield leaf, is an important pharmaceutical and chemical raw material for the synthesis of steroid hormone drugs and steroidal contraceptives. It has the reputation of "gold in medicine". The natural distribution of turmeric is mainly concentrated in a few countries such as my country and Mexico. In my country, the turmeric planting and processing industry is mainly concentrated in mountainous areas such as Northwest Hubei. These areas are the core water source areas of the South-to-North Water Diversion Project. During the process of turmeric processing and production of saponin, a large amount of high-concentration organic wastewater will be produced, w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/06
Inventor 吕建波刘会娟赵旭
Owner TIANJIN URBAN CONSTR COLLEGE