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Laboratory waste water treatment method and device

A wastewater treatment, laboratory technology, applied in water/sewage treatment, oxidized water/sewage treatment, water/sewage multi-stage treatment, etc., can solve the problems of high power consumption, easy saturation of activated carbon, high pressure, etc., and achieve rapid treatment , The effect of reducing COD and reducing equipment space

Inactive Publication Date: 2010-03-03
周瑞兴
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The "Comprehensive Wastewater Treatment Machine" (Chinese Invention Patent Application Publication Specification CN101041536A) invented by Li Baobiao et al. used technologies such as precipitation, oxidation, activated carbon filtration and reverse osmosis to treat laboratory wastewater, but did not treat the precipitated sludge. , there are also problems such as activated carbon is easy to saturate, and the pH probe often needs to be calibrated in the pH control system
In the reverse osmosis technology it uses, the pressure is high, the power consumption is large, and the reverse osmosis membrane needs to be replaced frequently, and there is no reasonable and effective treatment for the wastewater concentrated by the reverse osmosis membrane.

Method used

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  • Laboratory waste water treatment method and device
  • Laboratory waste water treatment method and device

Examples

Experimental program
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Effect test

Embodiment 1

[0053] 1. Target wastewater

[0054] The waste water to be treated is the waste water generated during the experiment of the Import and Export Inspection Bureau, and the waste water treatment capacity is 2 tons / day. The influent COD varies greatly, between 100-8000mg / L, and the pH range is 0-7. The main component of wastewater is organic matter, and contains trace amounts of organic lead, manganese, copper, zinc, chromium, etc.

[0055] 2. Process parameters

[0056] use as figure 2 and image 3 For the shown device, the specific process parameters are as follows:

[0057] (1) Sludge filter tank 2: The thickness is 10cm, and the treatment capacity is designed according to 1 to 3 months each time.

[0058] (2) Collecting tank 7: Set the high liquid level and low liquid level in the collecting tank, the high liquid level is 700mm from the ground, and the low liquid level is 100mm from the ground, controlled by the pressure transmission control system. When the water level...

Embodiment 2

[0072] 1. Target wastewater

[0073] In the dioxin laboratory, some dioxin-containing wastewater is discharged from time to time. The wastewater is very toxic, almost impossible to biochemically, and difficult to be oxidized. The content of dioxin is 2~2000μg / L, COD Cr At around 100mg / L, the pH is slightly acidic.

[0074] 2. Process parameters

[0075] use as figure 2 and image 3 For the shown device, the specific process parameters are as follows:

[0076] (1) Sludge filter pond 2: same as embodiment 1.

[0077] (2) Collecting pool 7: same as embodiment 1.

[0078] (3) Inner electrolytic cell 8: same as embodiment 1.

[0079] Electrolytic materials: calcium carbonate (2%), iron powder (60%), carbon powder (28%), magnesium phosphate salt (3%), polystyrene (4%), titanium dioxide (3%).

[0080] The preparation method of the electrolytic material: grind calcium carbonate, iron powder, carbon powder, magnesium phosphate salt, copper powder, titanium dioxide powder into ...

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Abstract

The invention relates to laboratory waste water treatment, in particular to a laboratory waste water treatment method and a device. In the method, laboratory waste water is subject to internal electrolysis, micro electrolysis and biosorption in sequence; aeration is carried out along with treatment; sludge produced in waste water treatment is dried, and the drying treatment is characterized in that gas produced in the aeration process is used for drying the sludge. The device comprises an electric control system and a waste water treatment unit, wherein, the waste water treatment unit comprises an inner electrolytic cell, a micro electrolytic cell, a biosorption cell and a desilter which are sequentially connected from front to back; the inner electrolytic cell, the micro electrolytic celland the biosorption cell are all provided with an aeration system; in addition, the device of the invention is also provided with a sludge filtering cell for treating sludge. The method and the device of the invention can be widely applied in treating waste water in various organic chemical engineering laboratories.

Description

technical field [0001] The invention relates to a method for treating wastewater, in particular to a method and device for treating laboratory wastewater. Background technique [0002] Due to the complex composition and variety of laboratory wastewater, and the irregular volume of wastewater, it is very difficult to treat laboratory wastewater with conventional technology; and in the construction of laboratory wastewater, as a sophisticated scientific research unit, the interaction of the surrounding environment must be considered coordination. Therefore, the development of laboratory wastewater treatment machine is imperative. Since 2005, the wastewater discharged from the laboratory has also been included in the scope of management. At present, some manufacturers have developed related laboratory wastewater treatment devices, using engineering wastewater treatment technology. Due to the complicated cost of laboratory wastewater and small equipment space, it is difficult ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F1/461C02F11/12C02F1/50C02F1/78C02F3/30
Inventor 周瑞兴周建华罗超王瑞敏黄少斌
Owner 周瑞兴
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