Laboratory wastewater treatment device with pollution isolation and odor resistance

Abstract

The utility model relates to laboratory wastewater treatment technical field, concretely relates to a laboratory wastewater treatment device with the function of separating pollution and preventing stench, the neutralization cylinder of the device is equipped with the shunt pipe of parallelism up and down: the first atomization shower nozzle is equipped to the upper pipe and sprays the filtered water downward, the second atomization shower nozzle is equipped to the lower pipe and sprays the neutralizing reagent upward, the lower pipe extension cylinder forms the input joint for the reagent injection outside, the bottom of the cylinder is equipped with the discharge joint, the top of the cylinder is equipped with the cover and is connected with the overflow pipeline and communicates with the one-way valve to guide the stench-containing gas; during operation, the filtered water forms the downward water mist through the upper pipe shower nozzle, the neutralizing reagent forms the upward reagent mist through the lower pipe shower nozzle, the stench-containing gas is guided into the top of the cylinder through the one-way valve, the water mist and the reagent mist are inversely interlaced, the pollutants in the water and the gas stench components are synchronously decomposed through atomization contact, realizing the gas-liquid co-purification, the treated liquid is discharged through the discharge port, and the purified gas is orderly diffused; the device uses the reverse atomization reaction and the active gas guiding structure to solve the continuous leakage pollution problem caused by the gas accumulation in the traditional wastewater treatment.

Description

Technical Field

[0001] This utility model relates to the field of laboratory wastewater treatment technology, and in particular to a laboratory wastewater treatment device with the function of separating dirt and blocking odor. Background Technology

[0002] In scientific research activities, laboratory wastewater often contains chemical residues and organic impurities, which release pungent odors when directly discharged or during simple treatment. This odor not only pollutes the surrounding environment but also poses a potential threat to the health of personnel. Traditional wastewater treatment methods, such as simple sedimentation or open discharge, fail to effectively control odor diffusion, allowing odorous components (such as sulfides or volatile organic compounds) to continuously drift into the air, resulting in typical secondary pollution. The root cause of this problem lies in the lack of a dedicated odor interception mechanism in wastewater treatment systems. Odors easily escape from container gaps or openings during storage and initial treatment, exacerbating the risk of environmental pollution.

[0003] To address the aforementioned odor emission problem, some existing technologies have introduced closed-loop filtration devices as an improvement. These devices, by adding multiple layers of physical filtration structures, such as activated carbon adsorption layers or sedimentation tanks, trap solid impurities and some dissolved pollutants in the wastewater, thereby indirectly reducing odor sources. In use, wastewater is introduced into a closed container, where the filter elements adsorb impurities and decompose some odor-causing substances, resulting in relatively clean effluent; simultaneously, the container walls theoretically prevent odor leakage. This filtration and deodorization method, through physical isolation and adsorption, reduces the concentration of pollutants in the wastewater, mitigating the intensity of odor during discharge to some extent and avoiding direct impact on the surrounding environment, making it a common odor control method in laboratories.

[0004] However, while this filtration device addresses the initial odor problem, it introduces a new technical bottleneck: during wastewater treatment, the odor is not completely eliminated; instead, it continues to accumulate and dissipate within the container due to limited system sealing. Specifically, the filtration process itself (such as agitation or liquid flow impact) triggers the release of volatile odors from residual gaseous components in the wastewater. The lack of a dedicated odor diversion or stable treatment channel within the system causes the gas pressure to rise continuously over time, eventually leading to slow leakage from weak points such as connection gaps, valve interfaces, or inspection openings. This continuous dissipation not only leaves the treatment site with a risk of odor pollution but also poses safety concerns due to pressure fluctuations. The crux of the problem lies in the fact that existing devices fail to integrate a stable and controllable odor treatment path, leaving the accumulated gas with nowhere to go and relying solely on passive sealing to deal with the odor, rather than actively introducing it into the purification process. Summary of the Invention

[0005] The purpose of this invention is to provide a laboratory wastewater treatment device with the function of separating dirt and blocking odor, so as to solve the technical problem that existing closed filtration devices accumulate volatile odors during wastewater treatment due to continuous stirring and liquid flow impact, and the lack of active flow channels leads to increased gas pressure, which eventually results in passive leakage from weak points such as container connection gaps and valve interfaces, causing continuous odor pollution and safety hazards in the treatment space.

[0006] To achieve the above objectives, this utility model provides a laboratory wastewater treatment device with pollution isolation and odor prevention functions, including a neutralization cylinder. An upper diversion pipe is installed parallel to the upper part of the neutralization cylinder, and several first atomizing nozzles are installed radially downward through the upper diversion pipe. A lower diversion pipe is installed parallel to the lower part of the neutralization cylinder, and several second atomizing nozzles are installed radially upward through the lower diversion pipe. One end of the lower diversion pipe extends to the outside of the neutralization cylinder to form an input connector. A discharge connector is fixedly installed at the bottom of the neutralization cylinder. A cap is bolted to the top of the neutralization cylinder, and an overflow pipe is bolted to the top of the cap. The other end of the overflow pipe is bolted to the top of a one-way valve, which is installed through one side of the top of a filter assembly.

[0007] The filter assembly includes a lid, which is bolted to the top of the mixing tank. A one-way valve is installed through one side of the top of the lid, and two liquid inlet connectors are installed through the top of the lid on the side adjacent to the one-way valve.

[0008] The top center of the bucket lid is bolted with a drive motor, and the output end of the drive motor is provided with a stirring shaft. The stirring shaft passes through the bucket lid and extends into the interior of the stirring bucket. Several stirring blades are symmetrically installed on the radial outer side of the stirring shaft.

[0009] A liquid level sensor is installed through the upper radial outer side of the mixing tank, and a first suction pipe is installed through the lower radial outer side of the mixing tank. The other end of the first suction pipe is bolted to the suction end of the first suction pump.

[0010] The first pumping end of the first suction pump is bolted to a first pumping pipe, the other end of the first pumping pipe is bolted to the liquid inlet end of the first filter cartridge, and the top of the first filter cartridge is bolted to a first top cover.

[0011] The first filter cartridge has a double-layer filter element inside. The first filter cartridge has a first delivery pipe installed at the drain end by bolts. The other end of the first delivery pipe is installed at the inlet end of the second filter cartridge by bolts. The top of the second filter cartridge has a second top cover installed by bolts.

[0012] The second filter cartridge is filled with activated carbon, and a second delivery pipe is bolted to the drain end of the second filter cartridge. The second delivery pipe is bolted to the inlet end of the transfer cartridge, and a third top cover is bolted to the top of the transfer cartridge.

[0013] The discharge end of the transfer cylinder is bolted with a second suction pipe, the other end of the second suction pipe is bolted to the suction end of the second suction pump, and the pumping end of the second suction pump is bolted with a second pumping pipe.

[0014] The other end of the second pumping pipe is bolted to the liquid inlet of the neutralizing cylinder and connected to the upper diversion pipe. The neutralizing cylinder, the transfer cylinder, the first filter cylinder and the second filter cylinder are respectively fitted with two clamps and fixed with bolts. A perforated assembly plate is fixedly installed on one side of the clamp.

[0015] This utility model discloses a laboratory wastewater treatment device with pollution isolation and odor prevention functions. The core of the purification system is formed by two parallel upper and lower diversion pipes inside the neutralization cylinder. The upper diversion pipe extends downwards and is equipped with multiple first atomizing nozzles to form a water mist spraying channel, while the lower diversion pipe extends upwards and is equipped with multiple second atomizing nozzles to form a chemical mist spraying channel. This vertically opposed spatial arrangement creates a reverse mixing zone for gas-liquid interaction. The lower diversion pipe extends to the outside of the neutralization cylinder to form an input connector, enabling the stable injection of neutralizing agents. A discharge connector is fixedly installed at the bottom of the neutralization cylinder to ensure safe drainage. A specially configured overflow pipe connects one end to the sealing cap at the top of the neutralization cylinder and the other end to an external treatment system via a one-way valve, forming a forced gas flow channel. During operation, when odorous gas enters the overflow pipe through the one-way valve, its path is restricted to the enclosed space at the top of the neutralization cylinder. Simultaneously, the upper distribution pipe receives external purified water and sprays it downwards through the first atomizing nozzle, creating an atomized water curtain. The lower distribution pipe introduces neutralizing agent through the input connector and sprays it upwards through the second atomizing nozzle. The opposing spraying from above and below forces the atomized water particles, neutralizing agent mist, and introduced gas to converge and intertwine in the central space, simultaneously decomposing residual pollutants in the water and odor-causing molecules in the gas through droplet encapsulation and contact reaction. An active gas-directing flow mechanism is constructed in this structure, eliminating the defects of passive gas accumulation and leakage in traditional containers; the dynamic mixing field formed by reverse spraying achieves synergistic purification of gas and liquid pollutants; and the structural coupling of closed pipes and atomization reaction achieves physical isolation between the pollution source and the external environment, solving the problem of odor emission throughout the wastewater treatment process. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0018] Figure 2 This is a schematic diagram of the clamp structure according to an embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the planar structure of the mixing tank according to an embodiment of the present invention.

[0020] Figure 4 This is a schematic diagram of the planar structure of each cylinder in an embodiment of this utility model.

[0021] In the diagram: 101. Neutralization cylinder; 102. Upper distributor pipe; 103. First atomizing nozzle; 104. Lower distributor pipe; 105. Second atomizing nozzle; 106. Inlet connector; 107. Outlet connector; 108. Cover; 109. Overflow pipe; 110. Check valve; 111. Filter assembly; 112. Tank lid; 113. Stirring tank; 114. Liquid inlet connector; 115. Drive motor; 116. Stirring shaft; 117. Stirring blades; 118. Liquid level sensor; 119. 120. First suction pipe; 121. First suction pump; 122. First pumping pipe; 123. First filter cartridge; 124. First top cover; 125. Double-layer filter element; 126. First conveying pipe; 127. Second filter cartridge; 128. Second top cover; 129. Activated carbon; 130. Second conveying pipe; 131. Transfer cylinder; 132. Third top cover; 133. Second suction pipe; 134. Second pumping pipe; 135. Clamp; 136. Perforated assembly plate. Detailed Implementation

[0022] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0023] Please see Figures 1-4 .

[0024] This utility model provides a laboratory wastewater treatment device with pollution isolation and odor prevention functions. The main structure of the device is a vertically arranged neutralization cylinder 101. An upper diversion pipe 102 is horizontally fixedly installed at the upper end of the neutralization cylinder 101. Multiple first atomizing nozzles 103 are evenly installed through the upper diversion pipe 102 in a radially downward direction for uniformly spraying filtered water mist downwards. A lower diversion pipe 104 is installed parallel to the upper diversion pipe 102 at the lower end of the neutralization cylinder 101. Multiple second atomizing nozzles 105 are installed through the lower diversion pipe 104 in a radially upward direction for spraying upwards. The neutralizing agent mist is injected; one end of the lower diversion pipe 104 extends through the side wall of the neutralizing cylinder 101 to form an input connector 106 for connecting to an external neutralizing agent source; the bottom end of the neutralizing cylinder 101 is fixedly connected to the discharge connector 107 to control the discharge of the treated liquid; the top end of the neutralizing cylinder 101 is bolted to install a cover 108, and the top end of the cover 108 is also bolted to the inlet of the overflow pipe 109, and the outlet end of the overflow pipe 109 is bolted to the top of the one-way valve 110, which is installed downward through the top side of the filter assembly 111.

[0025] The filter assembly 111 includes a cylindrical mixing tank 113 and a lid 112 sealed by bolts. A one-way valve 110 is installed through an opening on one side of the lid 112. Two inlet connectors 114 are parallel to each other near the one-way valve 110 at the top of the lid 112, for introducing laboratory wastewater and flocculant respectively. A drive motor 115 is vertically fixed to the center of the top surface of the lid 112 by bolts. The output shaft of the drive motor 115 is connected to a stirring shaft 116. The stirring shaft 116 extends downwards through the lid 112 and into the inner cavity of the mixing tank 113. Multiple layers of stirring blades 116 are symmetrically welded to the outer circumference of the stirring shaft 116. 17. To achieve powerful stirring; a liquid level sensor 118 is installed through the upper part of the side wall of the stirring tank 113 to monitor the liquid level, and the inlet end of the first suction pipe 119 is connected through the lower part of the side wall. The outlet end of the first suction pipe 119 is bolted to the inlet of the first suction pump 120, and the outlet of the first suction pump 120 is bolted to the first pumping pipe 121. The end of the first pumping pipe 121 is bolted to the liquid inlet end of the top of the first filter cylinder 122. The top of the first filter cylinder 122 is fitted with a detachable first top cover 123; the inner cavity of the first filter cylinder 122 is filled with a double-layer filter element 124 structure (upper layer of quartz sand coarse filter layer superimposed with lower layer of...). A non-woven fabric precision filter layer traps suspended solids in stages; the bottom outlet of the first filter cylinder 122 is bolted to the first delivery pipe 125, the end of the first delivery pipe 125 is connected to the inlet of the second filter cylinder 126, and the top of the second filter cylinder 126 is equipped with a second top cover 127; the interior of the second filter cylinder 126 is filled with granular activated carbon 128 to deeply remove dissolved pollutants and odors; the bottom of the second filter cylinder 126 is bolted to the second delivery pipe 129, the outlet of the second delivery pipe 129 is connected to the inlet of the transfer cylinder 130, and the top of the transfer cylinder 130 is equipped with a third top cover 131 to form a buffer water storage space; the transfer cylinder 130 is equipped with a third top cover 131 to form a buffer water storage space; the transfer cylinder 126 is equipped with a second delivery pipe 129, the bottom of the second filter cylinder 126 is bolted to the second delivery pipe 129, the outlet of the second delivery pipe 129 is connected to the inlet of the transfer cylinder 130, and the top of the transfer cylinder 130 is equipped with a third top cover 131 to form a buffer water storage space; the transfer cylinder 130 is equipped with a second delivery pipe 129, the bottom of the first filter cylinder 122 is bolted to the first delivery pipe 125, the end of the first delivery pipe 125 is connected to the inlet of the second delivery pipe 129, and the outlet of the second delivery pipe 129 is connected to the inlet of the transfer cylinder 130, and the top of the transfer cylinder 130 is equipped with a third top cover 131 to form a buffer water storage space; the transfer cylinder 130 is equipped with a second delivery pipe 129, the bottom of the first filter cylinder 122 is bolted to the first delivery pipe 125, the end of the first delivery pipe 1 The bottom outlet of cylinder 130 is bolted to a second suction pipe 132, which is connected to the inlet of a second suction pump 133. The outlet of the second suction pump 133 is connected to a second pumping pipe 134. The end of the second pumping pipe 134 is bolted to the inlet of the upper diversion pipe 102 of the neutralization cylinder 101 to provide water for the first atomizing nozzle 103. In the whole device, the outer walls of the four sets of containers—neutralization cylinder 101, transfer cylinder 130, first filter cylinder 122, and second filter cylinder 126—are fastened by two bolted clamps 135. The clamps 135 are welded to the sides with perforated assembly plates 136 to achieve modular fixed installation.

[0026] Working principle: First, odorous wastewater is introduced into the mixing tank 113 through one of the inlet connectors 114, while flocculant is simultaneously injected into the mixing tank 113 through another parallel inlet connector 114. Then, the drive motor 115 immediately starts, driving the multi-layered stirring blades 117 to powerfully rotate and stir via the stirring shaft 116. This process forces the wastewater and flocculant to undergo a thorough mixing and flocculation reaction, but it also causes gases entrained in the wastewater and newly released volatile gases to accumulate in the top space of the mixing tank 113. As the liquid level gradually rises in the mixing tank 113, the liquid level sensor 118 continuously monitors the water level, and the pressure of the gas accumulated at the top also increases accordingly. When the gas pressure accumulates... Upon reaching a specific threshold, the one-way valve 110 is opened, allowing the odorous mixed gases to be guided through the overflow pipe 109 to the top space of the neutralization cylinder 101, effectively preventing harmful gases from escaping from the mixing tank 113 to the external environment. After the flocculation reaction is complete, the first suction pump 120 starts operating, drawing the flocculated slurry from the bottom of the mixing tank 113 through the first suction pipe 119, and then pumping it into the first filter cylinder 122 through the first pumping pipe 121. Inside the sealed first filter cylinder 122, the slurry first contacts the upper quartz sand structure of the double-layer filter element 124 to filter out coarse suspended impurities, and then penetrates the lower fine non-woven fabric filter layer to remove fine particles, completing the initial solid-liquid reaction. The separated filtrate then enters the second filter cartridge 126 through the first delivery pipe 125. In the second filter cartridge 126, the pre-purified filtrate flows downwards through a bed of activated carbon 128. The activated carbon 128 fully utilizes its strong adsorption properties to deeply remove residual pigments, dissolved organic pollutants, and residual odors from the water, significantly improving water transparency. Afterward, the water purified by the activated carbon 128 flows through the second delivery pipe 129 to the transfer cylinder 130, which serves as a buffer container to ensure a continuous and stable water flow for subsequent pumping operations. Immediately afterwards, the second suction pump 133 starts, drawing the filtered and cleaned water from the transfer cylinder 130 through the second suction pipe 132, and then... The second pump pipe 134 transports the water to the upper distribution pipe 102 of the neutralization cylinder 101. After entering the neutralization cylinder 101, the filtered water is rapidly sprayed downward in the form of fine droplets from a number of radially arranged first atomizing nozzles 103. At this moment, the odorous gas introduced into the top of the neutralization cylinder 101 by the overflow pipe 109 is spreading downward along with the water mist. At the same time, the neutralizing agent from the external neutralizing liquid storage tank enters the lower distribution pipe 104 through the input connector 106, and is then uniformly sprayed upward by the second atomizing nozzles 105 installed in parallel below, forming bundles of upward-spreading drug mist. The upward-sprayed neutralizing drug mist, the downward-sinking filtered water mist, and the downward-spreading gas undergo strong counter-current interaction mixing in the central space of the neutralization cylinder 101.The neutralizing mist effectively captures and encapsulates atomized water particles and gas molecules. Through efficient droplet contact reaction, it eliminates residual chlorine and other substances in the water and decomposes and purifies odor-causing components such as sulfides in the gas. Finally, the completely neutralized safe liquid is controlled to be discharged through the discharge connector 107 at the bottom of the neutralization cylinder 101, while the harmless exhaust gas is simultaneously discharged downwards. Throughout the entire process, the multi-layer sealing structure and one-way valve 110 effectively isolate pollutants and unpleasant odors, achieving a highly environmentally friendly gas-liquid synergistic treatment effect.

[0027] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A laboratory wastewater treatment device with pollution isolation and odor prevention functions, comprising a neutralization cylinder (101), characterized in that: An upper diversion pipe (102) is installed parallel to the upper part of the neutralization cylinder (101). Several first atomizing nozzles (103) are installed radially downward through the upper diversion pipe (102). A lower diversion pipe (104) is installed parallel to the lower part of the neutralization cylinder (101). Several second atomizing nozzles (105) are installed radially upward through the lower diversion pipe (104). One end of the lower diversion pipe (104) extends to the outside of the neutralization cylinder (101) to form an input connector (106). A discharge connector (107) is fixedly installed at the bottom of the neutralization cylinder (101). A cover (108) is installed at the top of the neutralization cylinder (101) by bolts. An overflow pipe (109) is installed at the top of the cover (108) by bolts. The other end of the overflow pipe (109) is installed at the top of a one-way valve (110) by bolts. The one-way valve (110) is installed through one side of the top of the filter assembly (111).

2. The laboratory wastewater treatment device with pollution isolation and odor prevention function as described in claim 1, characterized in that: The filter assembly (111) includes a lid (112), which is bolted to the top of the mixing tank (113). A one-way valve (110) is installed through one side of the top of the lid (112), and two liquid inlet connectors (114) are installed through the top of the lid (112) on the side adjacent to the one-way valve (110).

3. A laboratory wastewater treatment device with pollution isolation and odor prevention functions as described in claim 2, characterized in that: A drive motor (115) is bolted to the top center of the bucket cover (112). The output end of the drive motor (115) is provided with a stirring shaft (116). The stirring shaft (116) passes through the bucket cover (112) and extends into the stirring bucket (113). Several stirring blades (117) are symmetrically installed on the radial outer side of the stirring shaft (116).

4. A laboratory wastewater treatment device with pollution isolation and odor prevention function as described in claim 3, characterized in that: A liquid level sensor (118) is installed through the upper radial outer side of the mixing tank (113), and a first suction pipe (119) is installed through the lower radial outer side of the mixing tank (113). The other end of the first suction pipe (119) is installed on the suction end of the first suction pump (120) by bolts.

5. A laboratory wastewater treatment device with pollution isolation and odor prevention functions as described in claim 4, characterized in that: The pumping end of the first suction pump (120) is bolted with a first pumping pipe (121), the other end of the first pumping pipe (121) is bolted to the liquid inlet end of the first filter cylinder (122), and the top of the first filter cylinder (122) is bolted with a first top cover (123).

6. A laboratory wastewater treatment device with pollution isolation and odor prevention function as described in claim 5, characterized in that: The first filter cartridge (122) is provided with a double-layer filter element (124) inside. The first filter cartridge (122) is connected to a first delivery pipe (125) by bolts at the drain end. The other end of the first delivery pipe (125) is connected to the inlet end of the second filter cartridge (126) by bolts. The second filter cartridge (126) is connected to a second top cover (127) by bolts at the top.

7. A laboratory wastewater treatment device with pollution isolation and odor prevention function as described in claim 6, characterized in that: The interior of the second filter cartridge (126) is filled with activated carbon (128). The drain end of the second filter cartridge (126) is bolted with a second delivery pipe (129). The second delivery pipe (129) is bolted to the inlet end of the transfer cylinder (130). The top of the transfer cylinder (130) is bolted with a third top cover (131).

8. A laboratory wastewater treatment device with pollution isolation and odor prevention function as described in claim 7, characterized in that: The discharge end of the transfer cylinder (130) is bolted with a second suction pipe (132), the other end of the second suction pipe (132) is bolted to the suction end of the second suction pump (133), and the pumping end of the second suction pump (133) is bolted with a second pumping pipe (134).

9. A laboratory wastewater treatment device with pollution isolation and odor prevention function as described in claim 8, characterized in that: The other end of the second pumping pipe (134) is installed on the liquid inlet end of the neutralizing cylinder (101) by bolts and is connected to the upper diversion pipe. The neutralizing cylinder (101), the transfer cylinder (130), the first filter cylinder (122) and the second filter cylinder (126) are respectively fitted with two clamps (135) and fixed by bolts. A perforated assembly plate (136) is fixedly installed on one side of the clamp (135).

Images