CN211445403U

CN211445403U - Device for treating heavy metal mercury in industrial wastewater

Info

Publication number: CN211445403U
Application number: CN201921096212.9U
Authority: CN
Inventors: 陈剑弹
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-15
Filing date: 2019-07-15
Publication date: 2020-09-08
Anticipated expiration: 2029-07-15

Abstract

The utility model discloses a device for treating heavy metal mercury in industrial wastewater belongs to aqueous purification technical field. The utility model provides a heavy metal mercury can not control when getting rid of among the current industrial waste water specifically get rid of content, the removal rate problem than low. When the utility model is used, firstly, the industrial wastewater is introduced into the treatment tank to be mixed with the alkali liquor; then, sequentially passing the sewage through a titanium dioxide filter screen, an organic bentonite filter screen and an enzyme bacteria filter screen; then observing the detected data, if the heavy metal content of the detected data is less than or equal to 1.5mg/L, the regulating valve is automatically opened, so that the waste liquid flows out; if the detection data is more than 1.5mg/L, the wastewater is unqualified, and the wastewater enters the pipeline of the sewage water inlet metering pump again to be filtered again until the wastewater is qualified; and finally opening a heavy metal precipitate discharge valve to discharge the heavy metal mercury precipitate out of the treatment tank. The utility model discloses easy operation has improved the clearance of heavy metal mercury in the waste water greatly.

Description

Device for treating heavy metal mercury in industrial wastewater

Technical Field

The utility model relates to a device for treating heavy metal mercury in industrial wastewater, which belongs to the technical field of water purification.

Background

Heavy metal contamination refers to environmental contamination caused by heavy metals or compounds thereof. Mainly caused by human factors such as mining, waste gas discharge, sewage irrigation, heavy metal product use and the like. Such as japanese water preferably is caused by mercury pollution, the extent of which depends on the concentration and chemical form of heavy metals present in the environment, food and organisms. Heavy metal pollution is mainly manifested in water pollution, and a part is in the atmosphere and solid waste.

Heavy metal pollution is mainly from industrial pollution, traffic pollution and household garbage pollution, and the pollution sources mainly include metal ores, battery factories, instrument factories, pigment factories and the like. With the discharge of pollutants, heavy metals enter a water body in a simple substance or ion form, and enter a living body through a food chain or drinking water due to the fact that the heavy metals are difficult to degrade and are enriched in the living body, and the heavy metals reach a certain concentration in a certain part or a specific tissue organ, so that acute poisoning, subacute poisoning, chronic poisoning and the like of a human body can be caused, and harm to the health of the human body can be caused, for example, 100 people die in 1955-1972 in Fushan county of Japan due to bone pain events, the main reason is that the heavy metals are poisoned by eating river water and rice polluted by mercury-and cadmium-containing wastewater, so that the prevention and control of the heavy metal pollution become a great affair for environmental protection at present and in future, and the removal of the heavy metal ions in water has important significance for guaranteeing the health.

At present, the treatment method of heavy metal wastewater mainly comprises a chemical method and a biological method. Among them, the most common method is the bio-adsorption method, which is a method for removing pollutants in a solution by solid-liquid two-phase separation by adsorbing chemical pollutants dissolved in water by using the chemical structure and component characteristics of certain organisms. For example, the biological adsorption method is used in patent No. CN102604995A entitled "biological water purification material for removing heavy metal ions in water", but the method has relatively small adsorption particles and is difficult to separate and recover in the actual treatment process.

Disclosure of Invention

The utility model discloses the technical problem who solves: the device overcomes the defects that the content of the heavy metal mercury in the existing industrial wastewater can not be specifically controlled and removed when the heavy metal mercury is removed, so that the removal rate is relatively low, and provides the device for treating the heavy metal mercury in the industrial wastewater, which has no harm to the environment and can detect whether the mercury content reaches the standard through automatic cycle operation.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme: an apparatus for treating heavy metal mercury in industrial wastewater, comprising: the device comprises a sewage water inlet metering pump (1), an alkali liquor pump (2), a titanium dioxide filter screen (3), an organic bentonite filter screen (4), an enzyme bacteria filter screen (5), a detector (6), an unqualified sewage reflux pump (7), an automatic regulating valve (8) and a heavy metal precipitate discharge valve (9); the method is characterized in that: the sewage inflow metering pump (1) is connected with an unqualified sewage reflux pump (7); the titanium dioxide filter screen (3), the organic bentonite filter screen (4) and the enzyme bacteria filter screen (5) are arranged in sequence; the automatic regulating valve (8) is positioned at the wastewater discharge outlet; the detector (6) is positioned at the rear part of the enzyme bacterium filter screen (5); the heavy metal precipitate discharge valve (9) is positioned at the bottom of the device; the lye pump (2) is positioned at the upper right part of the heavy metal precipitate discharge valve (9).

The zymophyte filter screen (5) contains two kinds of dead bacillus and rhizobium.

The alkali liquor in the alkali liquor pump (2) is sodium hydroxide.

The utility model discloses a beneficial effect lies in:

(1) the operation is convenient, no specific environment is needed, and no special requirement is made on the environment;

(2) the cost is saved, and no secondary pollution is caused to the environment;

(3) the detector automatically detects whether the mercury content in the wastewater is qualified or not, and the removal rate of heavy metal mercury in the wastewater is improved.

Drawings

FIG. 1 is a schematic structural view of a device for treating heavy metal mercury in industrial wastewater.

Wherein: 1. a sewage inflow metering pump; 2. an alkaline liquid pump; 3. a titanium dioxide filter screen; 4. an organic bentonite filter screen; 5. enzyme bacterium filter screen; 6. a detector; 7. unqualified sewage reflux pumps; 8. an automatic regulating valve; 9. heavy metal precipitate discharge valve.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

The device for treating heavy metal mercury in industrial wastewater according to the graph 1 is composed of a sewage water inlet metering pump (1), an alkaline liquid pump (2), a titanium dioxide filter screen (3), an organic bentonite filter screen (4), an enzyme bacteria filter screen (5), a detector (6), an unqualified sewage reflux pump (7), an automatic regulating valve (8) and a heavy metal precipitate discharge valve (9); the method is characterized in that: the sewage inflow metering pump (1) is connected with an unqualified sewage reflux pump (7); the titanium dioxide filter screen (3), the organic bentonite filter screen (4) and the enzyme bacteria filter screen (5) are arranged in sequence; the automatic regulating valve (8) is positioned at the wastewater discharge outlet; the detector (6) is positioned at the rear part of the enzyme bacterium filter screen (5); the heavy metal precipitate discharge valve (9) is positioned at the bottom of the device; the lye pump (2) is positioned at the upper right part of the heavy metal precipitate discharge valve (9).

When the utility model is used, the sewage inlet metering pump (1) leads industrial wastewater into the treatment tank, and the lye pump (2) is opened at the same time to mix the industrial wastewater for 20-25 min; then, sewage is sequentially filtered through a titanium dioxide filter screen (3), an organic bentonite filter screen (4) and an enzyme bacterium filter screen (5); then observing detection data on the detector (6), if the content of heavy metal in the detection data is less than or equal to 1.5mg/L, the detection data is qualified, and after 5-15 s, the automatic regulating valve (8) is automatically opened to enable waste liquid to flow out, if the content of heavy metal in the detection data is greater than 1.5mg/L, the detection data is unqualified, and after 12-15 s, unqualified waste water passes through an unqualified sewage reflux pump (7) and enters the pipeline of the sewage water inlet metering pump (1) again to enable the waste water to be filtered again until the waste water is qualified; and finally opening a heavy metal precipitate discharge valve (9) after 45-60 min to discharge the heavy metal mercury precipitate out of the treatment tank. The utility model discloses a beneficial effect lies in: the operation is convenient, no specific environment is needed, and no special requirement is made on the environment; the cost is saved, and no secondary pollution is caused to the environment; the detector automatically detects whether the mercury content in the wastewater is qualified or not, and the removal rate of heavy metal mercury in the wastewater is improved.

Claims

1. A device for treating heavy metal mercury in industrial wastewater comprises a sewage inflow metering pump (1), an alkali liquor pump (2), a titanium dioxide filter screen (3), an organic bentonite filter screen (4), an enzyme bacteria filter screen (5), a detector (6), an unqualified sewage reflux pump (7), an automatic regulating valve (8) and a heavy metal precipitate discharge valve (9); the method is characterized in that: the sewage inflow metering pump (1) is connected with an unqualified sewage reflux pump (7); the enzyme bacterium filter screen (5) is positioned 50cm behind the automatic regulating valve (8); the organic bentonite filter screen (4) is positioned 30cm behind the enzyme bacteria filter screen (5) and is parallel to the enzyme bacteria filter screen (5); the titanium dioxide filter screen (3) is positioned 30cm behind the organic bentonite filter screen (4) and is parallel to the organic bentonite filter screen (4); the automatic regulating valve (8) is positioned at the wastewater discharge outlet; the detector (6) is positioned at the rear part of the enzyme bacterium filter screen (5); the heavy metal precipitate discharge valve (9) is positioned at the bottom of the device; the lye pump (2) is positioned at the upper right part of the heavy metal precipitate discharge valve (9).