Stone processing wastewater treatment device

Abstract

The utility model discloses a kind of stone processing sewage treatment devices.The utility model includes device main body, bottom plate and water tank are equipped in it, water tank is divided into first water storage tank and second water storage tank by partition. First water storage tank top is equipped with multilayer stainless steel grid preliminary filtration component, filters large piece of stone chippings, sawdust. Bottom plate installs second water pump, flocculation tank and oxidation tank, flocculation tank is equipped with polyaluminium chloride and polyacrylamide composite reagent feeding assembly and adjustable speed stirring device, and oxidation tank is equipped with ozone micro-bubble sprayer. Sewage is pumped to flocculation tank by second water pump and generates large floc adsorption suspended solids and heavy metal;Again flow into oxidation tank, ozone micro-bubble decomposes organic matter and disinfects;Finally into the biological filter of second water storage tank, degrades hydrogen sulfide, ammonia gas and other malodorous gas. The device is treated by multistage, and suspended solids, heavy metal, organic matter and malodorous gas are efficiently removed, and effluent is stable, which can be reused or discharged up to standard, and has environmental protection and practicality.

Description

Technical Field

[0001] This utility model relates to the field of stone processing technology, and in particular to a wastewater treatment device for stone processing. Background Technology

[0002] Wastewater generated during stone processing typically contains large stone chips, wood chips, sand, suspended solids, heavy metal ions (such as lead and cadmium), organic matter (such as cutting fluid and adhesive residue), and malodorous gases such as hydrogen sulfide and ammonia. Direct discharge of such wastewater will pollute water bodies, soil, and the atmosphere, harming the ecological environment and human health.

[0003] Currently, wastewater treatment in stone processing often employs single or simple combined processes, which have significant shortcomings: some devices only have screens and sedimentation tanks, which can only remove large particulate impurities and have weak adsorption capacity for small suspended solids (particle size <5mm) and heavy metals, leaving the treated water still turbid and containing heavy metals; some devices do not integrate pH adjustment, and when the wastewater's acidity or alkalinity is unsuitable, flocculants cannot react fully, resulting in poor flocculation and low suspended solids removal rates; some oxidation treatment processes only use chlorine-based disinfectants, which easily produce toxic byproducts such as trihalomethanes and do not completely degrade organic matter; in addition, most devices lack biological deodorization, leaving residual odorous gases in the treated water, affecting its acceptability for reuse or discharge.

[0004] Therefore, a wastewater treatment device for stone processing is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to address the aforementioned shortcomings by providing a wastewater treatment device for stone processing.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a wastewater treatment device for stone processing, comprising a main body, wherein a water tank and a bottom plate are disposed inside the main body, and the water tank is installed on the top of the bottom plate.

[0007] The water tank is divided into a first water storage tank and a second water storage tank by a partition. The top of the first water storage tank is provided with a preliminary filtration assembly, and the preliminary filtration assembly integrates a first water pump for pumping out sewage.

[0008] The top of the base plate is equipped with a second water pump, a flocculation tank and an oxidation tank. The second water pump is located between the first water storage tank and the flocculation tank and is used to pump water from the first water storage tank to the flocculation tank.

[0009] The flocculation tank is equipped with a reagent dosing component to generate large flocs to adsorb suspended solids and heavy metals in the wastewater.

[0010] The oxidation tank is located on one side of the flocculation tank and is connected to the flocculation tank through a connecting pipe. The oxidation tank is equipped with an oxidant dosing component for decomposing organic matter in wastewater and disinfecting it.

[0011] The inner wall of the second water storage tank is equipped with a biological filter, which is used for deodorizing wastewater.

[0012] As a preferred technical solution of this utility model, the preliminary filtration component includes stacked grids for filtering large stone chips, wood chips and sand particles with a diameter greater than 5mm in sewage.

[0013] As a preferred technical solution of this utility model, the first water storage tank is equipped with a pH adjustment component, including a pH sensor and an acid-base dosing device. The pH sensor is linked with the acid-base dosing device to automatically adjust the pH of the sewage to 6-9.

[0014] As a preferred technical solution of this utility model, the agent dosing component in the flocculation tank includes an agent storage tank, a metering pump and a spraying device. The metering pump automatically adjusts the dosage of the composite agent of polyaluminum chloride and polyacrylamide according to the sewage flow rate of the first water storage tank. The flocculation tank is also equipped with a stirring device, and the rotation speed of the stirring device is automatically adjusted according to the sewage flow rate.

[0015] As a preferred embodiment of this utility model, the oxidant dosing assembly in the oxidation tank includes an ozone generator and a microbubble injector. The ozone generator is connected to the microbubble injector through a pipe and is used to mix ozone with wastewater in the form of microbubbles.

[0016] As a preferred technical solution of this utility model, the biological filter is filled with a mixture of sawdust and ceramsite as filler, and an air distribution device is provided at the bottom. The air distribution device delivers air into the filter through a blower to promote the degradation of malodorous gases by aerobic microorganisms.

[0017] The beneficial effects of this utility model are reflected in:

[0018] This invention achieves highly efficient purification of wastewater from stone processing: the preliminary filtration component intercepts large stone chips, wood chips, and sand particles larger than 5mm, reducing the burden on subsequent treatment; automatic pH adjustment ensures that the flocculant reacts fully with the wastewater, forming large flocs that adsorb suspended solids and heavy metal ions, reducing effluent turbidity and heavy metal content; ozone microbubble injection technology enhances the decomposition and sterilization of organic matter, avoiding the toxic byproducts of chlorine disinfection; the biological filter combined with an aeration device utilizes aerobic microorganisms to deeply degrade odorous gases such as hydrogen sulfide and ammonia, significantly reducing odor. The overall process covers all stages of solid-liquid separation, heavy metal adsorption, organic matter degradation, and deodorization. The treated water quality is stable and can be reused or discharged in compliance with standards, combining environmental friendliness and practicality. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present invention;

[0020] Figure 2 This is a front view of the structure of this utility model;

[0021] Figure 3 This is a cross-sectional view of the present invention.

[0022] In the picture:

[0023] 1. Main body of the device; 2. Preliminary filtration assembly; 201. First water pump; 202. Bar screen; 3. Water tank; 301. First water storage tank; 302. Second water storage tank; 4. Base plate; 5. Second water pump; 6. Flocculation tank; 7. Oxidation tank; 8. Connecting pipe. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0025] Please see Figure 1-3 This utility model discloses a wastewater treatment device for stone processing, including a main body 1, a base plate 4 inside the main body 1, and a water tank 3 installed on the top of the base plate 4. The water tank 3 is divided into a first water storage tank 301 and a second water storage tank 302 by a partition. A preliminary filter assembly 2 is provided on the top of the first water storage tank 301, and a first water pump 201 is integrated in the preliminary filter assembly 2 for pumping out the wastewater from stone processing to be treated.

[0026] The preliminary filtration component 2 is composed of multiple layers of stainless steel grids 202 stacked together. The spacing between the bars of adjacent grids 202 decreases sequentially. The spacing between the bars of the uppermost grid 202 is 10mm, which is used to filter large stone chips and wood chips in the sewage. The spacing between the bars of the lower grid 202 is 5mm, which is used to intercept sand particles with a diameter greater than 5mm, ensuring that large particulate impurities in the sewage entering the first water storage tank 301 are effectively removed.

[0027] The first water storage tank 301 is equipped with a pH adjustment component, including a pH sensor and an acid-base dosing device. The pH sensor monitors the pH value of the wastewater in the tank in real time. When the detected pH value is lower than 6 or higher than 9, the acid-base dosing device (composed of a metering pump, an acid storage tank, and an alkali storage tank) is automatically activated: if the pH is too low, the metering pump draws alkali solution from the alkali storage tank (such as sodium hydroxide solution) and adds it to the wastewater; if the pH is too high, it draws acid solution from the acid storage tank (such as hydrochloric acid solution) and adds it until the pH of the wastewater stabilizes within the range of 6-9.

[0028] The top of the base plate 4 is also equipped with a second water pump 5, a flocculation tank 6, and an oxidation tank 7. The second water pump 5 is located between the first water storage tank 301 and the flocculation tank 6, connected by a pipeline, and is used to pump the pH-adjusted wastewater to the flocculation tank 6. The flocculation tank 6 is equipped with a chemical dosing assembly and a stirring device: the chemical dosing assembly includes a chemical storage tank storing a composite chemical of polyaluminum chloride and polyacrylamide, a metering pump, and a spraying device. The metering pump monitors the wastewater flow rate entering the flocculation tank 6 in real time through a flow meter and automatically adjusts the dosage of the composite chemical according to the flow rate (e.g., 5-15 mg of chemical per liter of wastewater); the spraying device evenly sprays the chemical into the wastewater. The stirring device is an adjustable-speed paddle mixer, the speed of which is controlled by the flow signal fed back from the flow meter to ensure that the chemical and wastewater are fully mixed and quickly form large flocs to adsorb suspended solids and heavy metals in the wastewater.

[0029] Oxidation tank 7 is located on one side of flocculation tank 6, and the two are connected by connecting pipe 8. Oxidation tank 7 is equipped with an oxidant dosing assembly, including an ozone generator and a microbubble injector: the ozone gas generated by the ozone generator is transported to the microbubble injector through a pipe, and the microbubble injector disperses the ozone into the wastewater in the form of microbubbles with a diameter of less than 1 mm, ensuring full contact with the wastewater. The strong oxidizing properties of ozone decompose the organic matter in the wastewater and kill bacteria, thus completing the disinfection treatment.

[0030] Wastewater treated in oxidation tank 7 flows through pipes into the second storage tank 302, whose inner wall is equipped with a biological filter. The biological filter is filled with a 500mm thick packing material composed of a 2:1 volume ratio of sawdust and ceramsite. An aeration device (composed of perforated pipes) is located at the bottom of the filter, connected to an external blower via pipes. The blower continuously supplies air to the filter, providing oxygen to the aerobic microorganisms and promoting their degradation of odorous gases (such as hydrogen sulfide and ammonia) in the wastewater, thus achieving deodorization. The treated water is stored in the second storage tank 302 and can be reused or discharged after meeting standards.

[0031] With the above structural setup, wastewater from stone processing is first pumped by the first water pump 201 to the preliminary filtration component 2 at the top of the first storage tank 301. After passing through a multi-layer stainless steel grid 202, large stone chips, wood chips, and sand particles larger than 5mm are removed, completing the initial solid-liquid separation. The filtered wastewater enters the first storage tank 301, where a pH sensor monitors the acidity / alkalinity in real time. If the pH is below 6 or above 9, the acid / alkali dosing device automatically activates, adding sodium hydroxide (if the pH is too low) or hydrochloric acid (if the pH is too high) to adjust the pH to a suitable range of 6-9. The pH-adjusted wastewater is then pumped by the second water pump 5 to the flocculation tank 6. Inside the flocculation tank 6, the chemical dosing component automatically adds a composite agent of polyaluminum chloride and polyacrylamide according to the wastewater flow rate. Simultaneously, an adjustable-speed stirring device mixes the agent and wastewater, rapidly forming large flocs that adsorb suspended solids and heavy metal ions in the wastewater, achieving solid-liquid separation. The flocculated wastewater flows into the oxidation tank 7 through the connecting pipe 8. Inside oxidation tank 7, ozone generated by an ozone generator is dispersed into tiny bubbles by a microbubble injector, which mix thoroughly with the wastewater. The strong oxidizing properties of ozone decompose organic matter and kill bacteria, completing disinfection and organic matter degradation. The oxidized wastewater enters the second storage tank 302. The sawdust and ceramsite mixture in the biological filter within this tank provides a carrier for aerobic microorganisms. An external blower supplies oxygen to the filter via an aeration device, promoting the degradation of odorous gases such as hydrogen sulfide and ammonia by the microorganisms, thus achieving deodorization. The final treated water is stored in the second storage tank 302 and can be reused in production or discharged in compliance with standards.

[0032] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0033] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0034] Additionally, "multiple" refers to two or more.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wastewater treatment device for stone processing, comprising a main body (1), wherein a water tank (3) and a base plate (4) are disposed inside the main body (1), and the water tank (3) is installed on the top of the base plate (4), characterized in that: The water tank (3) is divided into a first water storage tank (301) and a second water storage tank (302) by a partition. The first water storage tank (301) is provided with a preliminary filter assembly (2) at the top. The preliminary filter assembly (2) integrates a first water pump (201) for pumping sewage. The top of the base plate (4) is equipped with a second water pump (5), a flocculation tank (6) and an oxidation tank (7). The second water pump (5) is located between the first water storage tank (301) and the flocculation tank (6) and is used to pump water from the first water storage tank (301) to the flocculation tank (6). The flocculation tank (6) is equipped with a reagent dosing component for generating large flocs to adsorb suspended solids and heavy metals in wastewater. The oxidation tank (7) is located on one side of the flocculation tank (6) and connected to the flocculation tank (6) via a connecting pipe (8). The oxidation tank (7) is equipped with an oxidant dosing component for decomposing organic matter in wastewater and disinfecting it. The inner wall of the second water storage tank (302) is provided with a biological filter, which is used to deodorize sewage.

2. The wastewater treatment device for stone processing according to claim 1, characterized in that: The preliminary filtration assembly (2) includes stacked grids (202) for filtering large stone chips, wood chips and sand particles with a diameter greater than 5 mm in wastewater.

3. The wastewater treatment device for stone processing according to claim 1, characterized in that: The first water storage tank (301) is equipped with a pH adjustment component, including a pH sensor and an acid-base dosing device. The pH sensor is linked with the acid-base dosing device to automatically adjust the pH of the sewage to 6-9.

4. The wastewater treatment device for stone processing according to claim 1, characterized in that: The agent dosing components in the flocculation tank (6) include an agent storage tank, a metering pump and a spraying device. The metering pump automatically adjusts the dosage of the composite agent of polyaluminum chloride and polyacrylamide according to the sewage flow rate of the first water storage tank (301). The flocculation tank (6) is also equipped with a stirring device, and the speed of the stirring device is automatically adjusted according to the sewage flow rate.

5. The wastewater treatment device for stone processing according to claim 1, characterized in that: The oxidant dispensing assembly in the oxidation tank (7) includes an ozone generator and a microbubble injector. The ozone generator is connected to the microbubble injector through a pipe and is used to mix ozone with wastewater in the form of microbubbles.

6. The wastewater treatment device for stone processing according to claim 1, characterized in that: The biological filter is filled with a mixture of sawdust and ceramsite as filler, and an air distribution device is installed at the bottom. The air distribution device supplies air into the filter through a blower to promote the degradation of malodorous gases by aerobic microorganisms.

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