CN211035387U

CN211035387U - Powdered activated carbon adding system

Info

Publication number: CN211035387U
Application number: CN201921705779.1U
Authority: CN
Inventors: 张强; 李鹏; 夏海霞; 卢东昱; 马效贤
Original assignee: Beijing Enfi Environmental Protection Co ltd
Current assignee: Beijing Enfi Environmental Protection Co ltd
Priority date: 2019-08-08
Filing date: 2019-10-12
Publication date: 2020-07-17
Anticipated expiration: 2029-10-12
Also published as: CN110655181A

Abstract

The utility model provides a powdered activated carbon dosing system, include: siphon, active carbon feeding hole, pipeline fan, tuber pipe, water conservancy stirring pump, water conservancy stirring inlet tube, water conservancy stirring outlet pipe, throw and add the pump, active carbon is thrown and is thrown the pipe, siphon moisturizing valve, active carbon mixing tank, biological pond. The method reduces the dust loss after the powdery activated carbon is added into the biological tank in the sewage plant, thereby reducing the sewage operation cost, reducing the energy consumption and simultaneously solving the adverse effect of dust flying in the adding process on the human health and the ambient air.

Description

Powdered activated carbon adding system

Technical Field

The utility model belongs to the technical field of sewage treatment, especially, relate to a powdered activated carbon dosing system.

Background

The biochar Process (PACT) is a novel advanced wastewater biochemical Treatment Process at present. The powdered activated carbon is added into the biological tank, the activated sludge is attached to the surface of the powdered activated carbon, and the huge specific surface area and the strong adsorption capacity of the powdered activated carbon can effectively improve the adsorption capacity of the sludge, particularly the concentration of dissolved oxygen and degradation matrix between the interface of the activated sludge and the powdered activated carbon is greatly improved, so that the degradation removal rate of COD is improved, and toxic and harmful organic pollutants which are difficult to degrade biologically can be effectively treated.

At present, the powder activated carbon is mainly added in two modes, namely manual adding and equipment adding.

The manual adding mode is to manually pour the powdered activated carbon into the biological pond directly. The manual adding can cause uneven adding of the activated carbon, and the adding interval is periodical adding, which easily causes uneven powder activated carbon in the biological tank. In addition, in the process of adding and using the powdered activated carbon, the density of the powdered activated carbon is lower and is 0.4-0.45 g/cm³The material will not move freely in the air, and it shows brownian movement character, and it is not soluble in water. Therefore, the fine powder particle clusters float around with the change of the air flow, so that the loss of the powdered activated carbon is large and the dust pollution is serious. Therefore, the powder flies during the manual feeding, so that the surrounding air environment is deteriorated.

The adding mode of the equipment mainly comprises dry adding and wet adding.

Dry-type addition:

the dry type adding is also called as a continuous preparation mixing adding process, which is a continuous adding process integrating three processes of preparation, mixing and adding into a whole by adopting a high-speed jet technology. The powdery solid material which is measured by the variable-frequency double helix directly enters a mass transfer cavity of the high-speed jet mixer to be instantly mixed with the high-speed jet carrier, and powder particles are forcibly dispersed into the jet carrier in the moving process to form uniform suspension and are instantly added into a water medium to be treated.

And (3) wet-type addition:

the process is also called a suspension adding process for preparing powder, and the materials are conveyed into a storage bin by adopting a positive pressure or negative pressure air flow conveying mode according to different packaging forms of the powder materials; the materials are conveyed to a metering screw through a mechanical arch breaking and airflow arch breaking device at the lower part of a storage bin, and the powder materials metered by a variable-frequency double helix are mixed with the preparation water metered by an electromagnetic flow meter through a conveying screw and a powder distributor and simultaneously enter a preparation tank with a water mist dust remover to be stirred and mixed for a certain time; adding the mixed suspension into a water medium to be treated through a screw pump; the front and the back of the screw pump are respectively provided with a primary flushing system, and the pump and the pipeline are flushed at regular time in the adding process or before the adding is finished, so that the pipeline blockage caused by the precipitation of turbid liquid in the pipeline is prevented.

The adoption of the equipment adding mode can effectively solve the dust flying and the threat factors to the human health, but the currently and commonly used powdered activated carbon adding equipment has higher price, large power consumption and high maintenance and repair cost, and can cause larger influence on the operation cost of a sewage plant when being particularly applied to the sewage field.

Disclosure of Invention

In order to solve the technical problem, the utility model provides a powdered activated carbon dosing system.

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview and is intended to neither identify key/critical elements nor delineate the scope of such embodiments. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is presented later.

The utility model adopts the following technical scheme:

in some alternative embodiments, there is provided a powdered activated carbon dosing system comprising: the device comprises an active carbon feeding pipe, a feeding pump, a siphon, a biological tank and a closed active carbon mixing tank, wherein the active carbon mixing tank is provided with an active carbon feeding hole, so that powdered active carbon can be conveniently fed; the feeding pump pumps out the mixed liquid in the activated carbon mixing tank and conveys the mixed liquid to the biological tank through the activated carbon feeding pipe; siphon one end with biological pond intercommunication, the other end with the active carbon mixing tank intercommunication will source water siphon in the biological pond extremely in the active carbon mixing tank.

In some optional embodiments, the powdered activated carbon dosing system further comprises: a pipeline fan; the inlet scoop of pipeline fan is located the liquid level top of the mixed liquid in the active carbon mixing tank, the air outlet of pipeline fan is connected with the tuber pipe, the tuber pipe end extends to the liquid level below of the source water in the biological pond.

In some optional embodiments, the powdered activated carbon dosing system further comprises: the hydraulic stirring pump, the hydraulic stirring water inlet pipe and the hydraulic stirring water outlet pipe; the water outlet of the hydraulic stirring water inlet pipe is connected with the water inlet of the hydraulic stirring pump, and the water inlet of the hydraulic stirring water outlet pipe is connected with the water outlet of the hydraulic stirring pump; the water inlet of the hydraulic stirring water inlet pipe and the water outlet of the hydraulic stirring water outlet pipe are positioned on two sides of the activated carbon mixing tank, and the added powdered activated carbon and siphon-in water are fully mixed and uniformly stirred.

In some optional embodiments, the powdered activated carbon dosing system further comprises: a siphon water supply pipe and a siphon water supply valve; the siphon water replenishing valve is arranged on the siphon water replenishing pipe; one end of the siphon water replenishing pipe is communicated with the siphon pipe, and the other end of the siphon water replenishing pipe is communicated with the activated carbon adding pipe. When the pressure of the siphon pipe is insufficient or air is fed, a siphon water supplementing pipe is adopted to absorb enough water from the activated carbon feeding pipe for supplementing.

In some optional embodiments, the powdered activated carbon dosing system further comprises: a grid; the grid is arranged in the active carbon feeding hole.

The utility model discloses throw the feeding mode for traditional active carbon, there is following advantage:

1. the integral structure is scientific and reasonable, siphon physical water inlet is adopted, high-power parts such as a water suction pump and the like are omitted, and the power consumption is reduced. Meanwhile, a water replenishing pipe and a water replenishing valve are adopted, so that the defect that water cannot be absorbed due to insufficient pressure caused by air inflow in a siphon water absorption mode is effectively overcome.

2. The utility model discloses a powdered activated carbon dosing system can throw in 12h in succession and throw, need not consume more manual work, only needs periodic inspection, and the work load can be listed into the daily operation inspection of sewage factory, has practiced thrift the cost of labor.

3. The closed active carbon mixing tank is adopted, so that the problem of air pollution caused by flying of powdered active carbon is solved, and meanwhile, the loss of the active carbon is reduced. The powdered activated carbon is added through an activated carbon feeding hole, and meanwhile, a pipeline fan is arranged to suck the powder flying in the tank into the liquid level of the biological tank, so that the pollution of the flying powder to the ambient air when the activated carbon powder is added is reduced by various measures. The hydraulic stirring pump is adopted to fully and uniformly stir the powdered activated carbon and the water, so that the activated carbon is prevented from being deposited or floating, and the conveying pressure of the feeding pump is reduced.

4. The adverse effect on the personal health of the dosing personnel is reduced. The activated carbon mixing tank is adopted for adding, the adding can be carried out at one time according to the adding amount of 12h, the powdered activated carbon is added for 1 time by manual assistance every day, the activated carbon feeding hole limits the feeding and flying area of the powdered activated carbon, and meanwhile, the pipeline fan carries out flying powder adjustment, so that the adverse health influence of the flying powder on feeding personnel is reduced to the maximum extent, and the safety and the health of the feeding personnel are guaranteed.

5. The adding cost of the medicament is saved. The activated carbon mixing tank adopts various measures for limiting the flying of the powder, the flying loss of the powdered activated carbon is inhibited to the maximum extent, the utilization rate of the powdered activated carbon is effectively improved, the actual feeding loss of the powdered activated carbon is reduced,

6. the actual operation cost of the sewage plant is comprehensively reduced. By reducing the power consumption, the labor cost and the medicament cost, the operation cost of the sewage plant is further reduced, and the energy is saved.

Drawings

FIG. 1 is a schematic structural view of a powdered activated carbon dosing system of the present invention;

fig. 2 is a structural schematic diagram of the powdered activated carbon adding system of the utility model.

Detailed Description

The following description and the drawings sufficiently illustrate specific embodiments of the invention to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others.

As shown in fig. 1 and 2, in some illustrative embodiments, a powdered activated carbon adding system for PACT process in sewage treatment is provided to reduce dust loss after adding powdered activated carbon in a biological tank in a sewage plant, thereby reducing sewage operation cost, reducing energy consumption, and simultaneously solving adverse effects of dust flying during adding on human health and ambient air. The utility model discloses a powdered activated carbon dosing system includes: the device comprises a siphon 1, an active carbon feeding hole 2, a pipeline fan 3, an air pipe 4, a hydraulic stirring pump 5, a hydraulic stirring water inlet pipe 6, a hydraulic stirring water outlet pipe 7, a feeding pump 8, an active carbon feeding pipe 9, a siphon water replenishing pipe 10, a siphon water replenishing valve 11, an active carbon mixing tank 12 and a biological tank 14.

The activated carbon mixing tank 12 is externally closed, only a plurality of pipeline holes connected with each pipeline are reserved, the activated carbon mixing tank 12 is also provided with activated carbon feeding holes 2, and activated carbon powder is fed into the activated carbon mixing tank 12 through the activated carbon feeding holes 2. Wherein, set up the grid in activated carbon throws material hole 2, the grid is used for the separation to miss the bold debris of going into, and improves work safety, avoids foreign matter or workman to fall into.

Throw and add pump 8 and take out the mixed liquid in the active carbon mixing tank 12 and throw the feeder tube 9 via the active carbon and carry to

biological pond

14, 1 one end of siphon and biological pond 14 intercommunication, the other end mixes pond 12 intercommunication with the active carbon, with the source water siphon in the biological pond 14 to the active carbon mixing tank 12 in, the utility model discloses the water of getting from biological pond 14 as the water distribution of powdered activated carbon, the water intaking mode is the siphon, mixes in the active carbon mixing tank 12 and the powdered activated carbon who drops into from the active carbon throws material hole 2 and forms mixed liquid to throw feeder tube 9 and carry to biological pond 14 via throwing pump 8, active carbon. And a feeding pump 8 is adopted to uniformly feed the activated carbon mixed solution into the biological tank 14, so that the activated carbon concentration of the biological tank is ensured.

The inlet scoop of pipeline fan 3 is located the liquid level top of the mixed liquid in the active carbon mixing tank 12, and the air outlet of pipeline fan 3 is connected with tuber pipe 4, and tuber pipe 4 end extends to the liquid level below of the source water in the biological pond, and the powder that flies upward of the liquid level of the mixed liquid in the active carbon mixing tank 12 extracts the biological pond 14 by the active carbon mixing tank through pipeline fan 3. Powdered activated carbon is added through an activated carbon feeding hole 2, a pipeline fan 3 is arranged at the same time, the powder flying in the tank is sucked below the liquid level of the biological tank, and the pollution of the flying powder to the surrounding air when the activated carbon powder is added is reduced by various measures.

The water outlet of the hydraulic stirring water inlet pipe 6 is connected with the water inlet of the hydraulic stirring pump 5, and the water inlet of the hydraulic stirring water outlet pipe 7 is connected with the water outlet of the hydraulic stirring pump 5; the water inlet of the hydraulic stirring water inlet pipe 6 and the water outlet of the hydraulic stirring water outlet pipe 7 are positioned at two sides in the activated carbon mixing tank 12. The powdered activated carbon is insoluble in water, and therefore, the activated carbon is prevented from being deposited by stirring with the hydraulic stirring pump 5. The hydraulic stirring pump 5 draws water from the activated carbon mixing tank 12 through the hydraulic stirring water inlet pipe 6, circulates to the other side of the activated carbon mixing tank 12 through the hydraulic stirring water outlet pipe 7 to form mixed liquid circulation, and uniformly stirs the activated carbon mixed liquid.

The siphon water replenishing valve 11 is arranged on the siphon water replenishing pipe 10, one end of the siphon water replenishing pipe 10 is communicated with the siphon pipe 1, the other end of the siphon water replenishing pipe 10 is communicated with the activated carbon adding pipe 9, the siphon water replenishing valve 11 is normally closed, and the activated carbon adding pipe 9 is provided with a normally closed bypass valve 15.

Claims

1. The utility model provides a powdered activated carbon dosing system which characterized in that includes: the device comprises an active carbon feeding pipe, a feeding pump, a siphon, a biological tank and a closed active carbon mixing tank, wherein the active carbon mixing tank is provided with an active carbon feeding hole; the feeding pump pumps out the mixed liquid in the activated carbon mixing tank and conveys the mixed liquid to the biological tank through the activated carbon feeding pipe; siphon one end with biological pond intercommunication, the other end with the active carbon mixing tank intercommunication will source water siphon in the biological pond extremely in the active carbon mixing tank.

2. The powdered activated carbon dosing system as set forth in claim 1 further comprising: a pipeline fan; the inlet scoop of pipeline fan is located the liquid level top of the mixed liquid in the active carbon mixing tank, the air outlet of pipeline fan is connected with the tuber pipe, the tuber pipe end extends to the liquid level below of the source water in the biological pond.

3. The powdered activated carbon dosing system as claimed in claim 1 or 2 further comprising: the hydraulic stirring pump, the hydraulic stirring water inlet pipe and the hydraulic stirring water outlet pipe; the water outlet of the hydraulic stirring water inlet pipe is connected with the water inlet of the hydraulic stirring pump, and the water inlet of the hydraulic stirring water outlet pipe is connected with the water outlet of the hydraulic stirring pump; and the water inlet of the hydraulic stirring water inlet pipe and the water outlet of the hydraulic stirring water outlet pipe are positioned at two sides in the activated carbon mixing tank.

4. The powdered activated carbon dosing system as set forth in claim 3 further comprising: a siphon water supply pipe and a siphon water supply valve; the siphon water replenishing valve is arranged on the siphon water replenishing pipe; one end of the siphon water replenishing pipe is communicated with the siphon pipe, and the other end of the siphon water replenishing pipe is communicated with the activated carbon adding pipe.

5. The powdered activated carbon dosing system as set forth in claim 4 further including: a grid; the grid is arranged in the active carbon feeding hole.