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Method for treating laboratory waste liquid

A laboratory waste liquid and treatment method technology, applied in the field of waste water treatment, can solve problems such as complex waste water composition, unfavorable timely treatment of waste water in university laboratories, uncertainty and dynamics of discharged water volume and water quality, etc.

Inactive Publication Date: 2019-09-27
合肥九一化工科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It turns out that laboratory wastewater from colleges and universities is basically discharged directly to the sewer, but the acid-base waste liquid and heavy metal waste liquid in the waste liquid are directly discharged into rivers and lakes, which will pollute water bodies or sediments, etc.
[0003] In fact, the wastewater discharged from the laboratory has more complex components than other wastewater, and the discharged water volume and water quality are characterized by uncertainty and dynamics, which lead to certain pollution problems in the laboratory.
Moreover, the current collection and treatment process of waste liquid in college laboratories is complicated, which is not conducive to the timely treatment of waste water in college laboratories

Method used

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Examples

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Effect test

Embodiment

[0017] First prepare modified red jade soil, the preparation process is: the red jade soil is crushed and sieved to make the particle diameter less than 105 microns, then washed several times with deionized water to remove possible impurities, and then placed in an oven at 105 °C Dry for 24 hours, take 4 50ml centrifuge tubes, each take 2g of dried red jade soil, make it fully soaked in 20ml of HCl, HNO 3 、H 2 SO 4 、H 3 PO 4 In solution, HCl, HNO 3 、H 2 SO 4 、H 3 PO 4 The concentration of the solution was kept at 0.01mol / L, and then at room temperature, 4 centrifuge tubes were placed on a shaking table at 200 rpm for 24 hours. After sufficient reaction, the mixture of acid and soil was separated by filter paper, and the separated acid was modified The modified red jade soil was obtained by placing the modified red jade soil in an oven at 105°C and fully drying it.

[0018] A laboratory waste liquid treatment method, the laboratory waste liquid mainly includes acid-bas...

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PUM

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Abstract

The invention relates to the technical field of wastewater treatment, and specifically relates to a method for treating laboratory waste liquid. The method is characterized in that acid-base waste liquid in the waste liquid is introduced into an acid-base waste liquid storage tank, and after the pH value of the acid-base waste liquid reaches neutrality by utilizing the principle of acid-base neutralization, the acid-base waste liquid can be discharged; chromium-containing waste liquid, mercury-containing waste liquid and other heavy metal waste liquid in the waste liquid are respectively introduced into a chromium waste liquid storage tank, a mercury-containing waste liquid storage tank, and other heavy metal storage tanks; the chromium-containing waste liquid in the chromium waste liquid storage tank is adsorbed and filtered by adopting modified akadama clay, the mercury-containing waste liquid in the mercury-containing waste liquid storage tank is adsorbed and filtered by adopting zero-valent iron, the heavy metal waste liquid in the other heavy metal storage tanks is filtered by adopting a precipitation filtration method, and filtered waste liquid can be discharged. According to the method involved in the invention, the acid-base waste liquid can be discharged without pollution, chromium elements, mercury elements and other heavy metals in the waste liquid can be removed, and pollution-free emission is achieved.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a method for treating laboratory waste liquid. Background technique [0002] As our country gradually pays attention to the research of science and technology, the number of laboratories in colleges and universities continues to increase, and the number of scientific research personnel and tasks continue to increase, which has gradually increased the amount of waste water produced by high-efficiency laboratories in our country. It turns out that laboratory wastewater from colleges and universities is basically discharged directly to the sewer, but the acid-base waste liquid and heavy metal waste liquid in the waste liquid are directly discharged into rivers and lakes, which will pollute water bodies or sediments. [0003] In fact, the wastewater discharged from the laboratory has more complex components than other wastewater, and the quantity and quality of discharge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F101/22C02F101/20
CPCC02F9/00C02F2103/003C02F1/66C02F1/281C02F1/001C02F2101/22C02F2101/20
Inventor 白永涛杨长明
Owner 合肥九一化工科技有限公司
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