Floating type dustproof device and wastewater treatment system

Abstract

The utility model belongs to the technical field of wastewater treatment, and particularly relates to a floating type dustproof device and a wastewater treatment system. The floating type dust-proof device comprises a dust-proof cover and a floating body located on the peripheral side of the dust-proof cover, the peripheral side of the dust-proof cover is connected with the floating body in a sealed mode, a gap is formed between the bottom end face of the dust-proof cover and the floating face of the floating body, and a medicine adding opening is formed in the upper end of the dust-proof cover. The floating type dustproof device always floats on the liquid level of the reaction tank, can effectively avoid dust pollution caused by medicament powder in the dosing process and adverse effects caused by liquid level change of the reaction tank, is ingenious in structural design and high in practicability, is very beneficial to popularization and application, and has great market prospects and social benefits.

Description

Technical Field

[0001] The utility model belongs to the technical field of wastewater treatment, and in particular relates to a floating dust-proof device and a wastewater treatment system. Background Art

[0002] Acidic wastewater typically contains large amounts of acidic substances and heavy metal ions, posing significant risks to both the environment and human health. Discharged directly into the environment without treatment can lead to soil and water acidification, disrupting ecological balance and affecting aquatic life and crops. Furthermore, heavy metal ions such as lead and chromium are toxic, and long-term accumulation can pose a serious threat to human health.

[0003] This type of wastewater is mainly treated by direct neutralization. For example, the invention patent No. "CN105396423B" and the name "A system and method for treating waste gas and wastewater" discloses a treatment system consisting of a flue gas treatment system filled with magnesium oxide absorption liquid, an acid water neutralization treatment system and an electrochemical treatment system; the inlet of the flue gas treatment system is connected to the fan that transports the smelting flue gas, the waste liquid outlet of the flue gas treatment system is connected to the inlet of the acid water neutralization treatment system through a pipeline equipped with an absorption liquid delivery pump, the neutralization liquid outlet of the acid water neutralization treatment system is connected to the input end of the neutralization liquid delivery pump, and the output end of the neutralization liquid delivery pump is connected to two pipelines, one leading to the flue gas treatment system and the other leading to the electrochemical treatment system. The present invention utilizes the effective components in the absorption liquid and the magnesium oxide solution to neutralize the acidic wastewater. However, in the process of using magnesium oxide to neutralize acidic wastewater, magnesium oxide powder is prone to dust pollution on the one hand, and on the other hand, it easily absorbs moisture and carbon dioxide in the air, gradually generating basic magnesium carbonate, and at the same time easily reacts with water to generate magnesium hydroxide, causing the magnesium oxide dosing device to be blocked or even blocked in a relatively short period of time, thereby affecting the continuous and stable operation of the wastewater treatment system. Utility Model Content

[0004] In order to solve the above technical problems, one of the purposes of the present invention is to provide a floating dust prevention device with an ingenious structural design that can effectively prevent dust pollution during the dosing process.

[0005] In order to achieve the above technical objectives, the utility model adopts the following technical solutions: a floating dust-proof device, including a dust cover and a float located on the peripheral side of the dust cover, the peripheral side of the dust cover and the float are sealedly connected, a gap is formed between the bottom end surface of the dust cover and the floating surface of the float, and a dosing port is provided at the upper end of the dust cover.

[0006] Preferably, a waterproof valve is provided at the dosing port of the dust cover. The valve is opened when dosing and closed when not dosing to prevent water from splashing into the dosing pipe, thereby avoiding problems such as agglomeration and blockage caused by the reaction of the agent with water.

[0007] Preferably, the dust cover has a conical structure with a small upper end and a large lower end.

[0008] Preferably, the float is a plastic float ring.

[0009] Since this floating dust prevention device always floats on the liquid surface of the reaction tank, it can effectively avoid the dust pollution generated by the reagent powder during the dosing process and the adverse effects caused by the change of the liquid level in the reaction tank. It has a clever structural design and strong practicality, is very conducive to promotion and application, and has great market prospects and social benefits.

[0010] The second object of the present utility model is to provide a wastewater treatment system, including a reaction tank and a powder conveying device for conveying pharmaceutical powder to the reaction tank. The discharge end of the powder conveying device is equipped with the above-mentioned floating dust-proof device, and the floating dust-proof device floats on the liquid surface of the reaction tank.

[0011] Preferably, the powder conveying device includes a storage bin, a vibrator is installed at the bottom of the storage bin, the discharge port of the storage bin is connected to a powder conveying pump, and the powder conveying pump is connected to a conveying hose.

[0012] Preferably, a coagulation tank, a flocculation tank, a sedimentation tank and a sludge tank are sequentially arranged downstream of the reaction tank, and a sludge return device is provided between the sludge tank and the reaction tank, and the sludge return device returns part of the sludge in the sludge tank to the reaction tank.

[0013] Preferably, the sludge return device includes a sludge lifting pump and a sludge return pipe, the feed port of the sludge lifting pump is connected to the sludge pool, the discharge port of the sludge lifting pump is connected to the sludge return pipe, and the sludge return pipe is connected to the reaction tank.

[0014] This wastewater treatment system has at least the following beneficial effects: by setting a floating dust prevention device on the liquid surface of the reaction tank, the dust pollution generated by the reagent powder during the dosing process and the adverse effects caused by the change of the reaction tank liquid level are effectively avoided. By setting a sludge return device, the utilization rate of the treatment reagent can be effectively improved, thereby greatly saving the treatment cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following drawings are intended only to illustrate and explain the present invention, and are not intended to limit the scope of the present invention.

[0016] Figure 1This is a schematic top view of the structure of the floating dust-proof device in the first embodiment of the present invention;

[0017] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure along the AA direction;

[0018] Figure 3 This is a reference diagram of the use state of the floating dust-proof device in the first embodiment of the present utility model;

[0019] Figure 4 This is a schematic diagram of a wastewater treatment system in Example 2 of the present utility model;

[0020] Figure 5 It is a structural schematic diagram of the powder conveying device in the second embodiment of the present utility model. DETAILED DESCRIPTION

[0021] The present invention is further described below with reference to the accompanying drawings and examples. In the detailed description that follows, certain exemplary embodiments of the present invention are described by way of illustration only. It goes without saying that those skilled in the art will recognize that the described embodiments may be modified in various ways without departing from the spirit and scope of the present invention. Therefore, the drawings and description are illustrative in nature and are not intended to limit the scope of the claims.

[0022] Example 1

[0023] like Figure 1 and Figure 2 As shown, the floating dustproof device includes a dust cover 1 and a float 2 located on the peripheral side of the dust cover 1, and the float 2 is preferably a plastic float ring; the peripheral side of the dust cover 1 and the float 2 are sealed and connected by a foam glue 3. Of course, the dust cover 1 and the float 2 can also be sealed and connected by other methods, which should all fall within the scope of protection of the present utility model.

[0024] There is a gap D between the bottom end surface of the dust cover 1 and the floating surface of the float 2. The upper end of the dust cover 1 is provided with a dosing port 4. The gap D can form as large a drug diffusion space as possible to facilitate drug distribution; at the same time, the dosing port is kept away from the liquid surface of the reaction tank to prevent splashing water from reacting with the drug powder and forming agglomerates.

[0025] refer to Figure 2 The dosing port of the dust cover 1 is provided with a waterproof valve 5. The valve is opened when dosing and closed when not dosing to seal the dosing port to prevent water from splashing into the dosing pipe and backflow, to avoid the reaction between the agent and water to form lumps, and even cause problems such as pipeline blockage.

[0026] In this embodiment, the dust cover 1 is a conical structure with a small upper end and a large lower end. Of course, other structural shapes can also be used, which should fall within the protection scope of the present utility model and will not be described in detail here.

[0027] refer to Figure 3 When used, this floating dust-proof device can always float on the liquid surface of the reaction tank, so it can effectively avoid the dust pollution generated by the reagent powder during the dosing process and the adverse effects caused by the change of the liquid level in the reaction tank. The structural design is ingenious and practical, which is very conducive to promotion and application, and has great market prospects and social benefits.

[0028] Example 2

[0029] refer to Figure 4 , the wastewater treatment system includes a reaction tank 6, a coagulation tank 7, a flocculation tank 8, a sedimentation tank 9, a sludge tank 10, a powder conveying device 11, a floating dust prevention device and a sludge return device 12;

[0030] The powder conveying device 11 is used to convey the pharmaceutical powder to the reaction tank 6. Figure 5 In this embodiment, the powder conveying device 11 includes a conical storage bin 111, with a vibrator 112 installed at the bottom of the storage bin 111. The discharge port of the storage bin 111 is connected to a powder conveying pump 113 (preferably a diaphragm pump), which is connected to a conveying hose 114. The conveying hose 114 is preferably a PVC steel wire hose, which has the advantages of being pressure-resistant, oil-resistant, corrosion-resistant, acid- and alkali-resistant, flexible, and not prone to brittle cracking or aging. Of course, the powder conveying device 11 can also achieve the powder conveying function through other methods, all of which should fall within the scope of protection of the present utility model.

[0031] A floating dust prevention device is installed at the discharge end of the powder conveying device 11. Its dosing port is connected to the delivery hose 114, allowing it to float above the liquid surface of the reaction tank. This effectively prevents dust contamination from the powder during dosing and adverse effects from changes in the reaction tank liquid level. The structure of the floating dust prevention device is the same as that of Example 1 and will not be further described here.

[0032] The sludge return device 12 is installed between the sludge tank 10 and the reaction tank 6, and includes a sludge lifting pump 121 (preferably a diaphragm pump) and a sludge return pipe 122. After the sludge in the sedimentation tank 9 is discharged to the sludge tank 10 through the sludge discharge pipe, part of the sludge is returned to the reaction tank 6 through the sludge lifting pump 121. The residual reagents in the returned sludge react with the wastewater in the reaction tank 6 again, which effectively improves the utilization rate of the reagents, thereby greatly saving treatment costs.

[0033] The above description is only an illustrative embodiment of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principle of the present invention shall fall within the scope of protection of the present invention.

Claims

1. Floating dust prevention device, characterized by: The utility model comprises a dust cover and a float located around the dust cover. The dust cover is sealed to the float. A gap is formed between the bottom end surface of the dust cover and the floating surface of the float. A medicine adding port is provided at the upper end of the dust cover.

2. The floating dust prevention device according to claim 1, characterized in that: A waterproof valve is provided at the medicine adding port of the dustproof cover.

3. The floating dust prevention device according to claim 1, characterized in that: The dust cover is in a conical structure with a small upper end and a large lower end.

4. The floating dust prevention device according to claim 3, wherein: The float is a plastic float ring.

5. A wastewater treatment system, including a reaction tank, characterized in that: It also includes a powder conveying device for conveying the pharmaceutical powder to the reaction tank, and the discharge end of the powder conveying device is installed with the floating dust-proof device according to any one of claims 1 to 4, and the floating dust-proof device floats on the liquid surface of the reaction tank.

6. The wastewater treatment system according to claim 5, wherein: The powder conveying device includes a storage bin, a vibrator is installed at the bottom of the storage bin, an outlet of the storage bin is connected to a powder conveying pump, and the powder conveying pump is connected to a conveying hose.

7. The wastewater treatment system according to claim 5, wherein: A coagulation tank, a flocculation tank, a sedimentation tank and a sludge tank are sequentially arranged downstream of the reaction tank. A sludge return device is provided between the sludge tank and the reaction tank, and the sludge return device returns part of the sludge in the sludge tank to the reaction tank.

8. The wastewater treatment system according to claim 7, wherein: The sludge return device includes a sludge lifting pump and a sludge return pipe, the feed port of the sludge lifting pump is connected to the sludge pool, the discharge port of the sludge lifting pump is connected to the sludge return pipe, and the sludge return pipe is connected to the reaction tank.

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