A mechanism for diverting contaminated rainwater from a chlorinated paraffin plant

Abstract

A chlorinated paraffin plant area contains sewage rainwater diversion mechanism, including drainage ditch, sewage ditch, first pit, secondary pit, the sewage ditch is connected with first pit, the drainage ditch is connected with secondary pit, the position of first pit and secondary pit is lower than the horizontal height of drainage ditch and sewage ditch, the starting end of drainage ditch and sewage ditch is higher than the horizontal height of overall structure, the outer rainwater ditch is provided with gate at the connection place of drainage ditch and sewage ditch, the gate is sealingly arranged between the connection of outer rainwater ditch, drainage ditch and sewage ditch, the gate is controlled displacement through lifting control mechanism, the inside of first pit is provided with rainwater composition collecting device and sewage pump, through setting outer rainwater ditch and lifting control gate structure, the automatic identification and diversion of initial rainwater and later rainwater are realized, the high pollution initial rainwater is effectively avoided to mix in clean rainwater system, and the accuracy and automation level of rain and sewage diversion are improved.

Description

Technical Field

[0001] This utility model relates to a wastewater diversion mechanism for a chlorinated paraffin plant. Background Technology

[0002] Chlorinated paraffin, an important industrial additive, is primarily produced through a chlorination reaction between wax oil and chlorine gas, with hydrochloric acid as a byproduct. This specific chemical reaction principle determines the unique environmental challenges faced by chlorinated paraffin production plants. Potential pollutants within the plant area mainly fall into two categories:

[0003] Oily substances include raw material wax oil, chlorinated paraffin products, and lubricating oils for production equipment. These oily substances are characterized by their viscosity, insolubility in water, and tendency to adhere to surfaces.

[0004] Acidic substances: mainly hydrochloric acid, a byproduct, and acidic substances formed when leaked chlorine gas comes into contact with water. These acidic substances are highly corrosive and can cause a sharp drop in the pH value of the water.

[0005] Chlorinated paraffin products are formed by reacting wax oil with chlorine gas, with hydrochloric acid as a byproduct. This means that chlorinated paraffin plants may experience leaks and spills of oils / acids. Managing these environmental spills while maximizing recycling is a crucial issue.

[0006] Currently, most domestic chlorinated paraffin production enterprises, especially small and medium-sized enterprises, have significant deficiencies in the design and operation of rainwater and sewage separation systems, mainly in the following aspects:

[0007] Incomplete separation leads to severe pollution from "initial rainwater": Traditional separation methods often only distinguish between "rainwater pipes" and "sewage pipes." However, the "initial rainwater" formed during the initial rainfall, washing over rooftops, floors, and storage yards, has already dissolved acidic gases in the air and washed away oil and acidic pollutants accumulated on the ground. Its pollution load is extremely high, essentially making it high-concentration wastewater. Existing systems generally lack mechanisms for effectively identifying, collecting, and treating this initial rainwater, causing it to mix with the cleaner rainwater in the later stages. This results in either direct discharge causing environmental pollution or the entire amount entering the sewage system, significantly increasing the unnecessary burden and operating costs of sewage treatment plants.

[0008] The chaotic pipe network system poses a risk of cross-contamination: many factories have complex underground rainwater and sewage pipe networks, with some even having mixed or incorrect connections. During extreme weather events such as heavy rain, the water level in the pipe network rises, easily causing sewage to backflow into the rainwater system, resulting in sudden pollution incidents. Furthermore, the collection of rainwater from contaminated and clean areas is not separated, causing potentially recyclable clean rainwater to become contaminated.

[0009] Companies in the chlorinated paraffin industry are generally small-scale, and there is significant room for improvement in their environmental treatment measures. Rainwater and wastewater often mix to some extent, leading to a waste of resources in wastewater treatment. Utility Model Content:

[0010] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a wastewater diversion mechanism for chlorinated paraffin plant areas.

[0011] A rainwater diversion mechanism for a chlorinated paraffin plant includes a drainage ditch, a sewage ditch, a primary water pit, and a secondary water pit. The sewage ditch is connected to the primary water pit, and the drainage ditch is connected to the secondary water pit. The primary and secondary water pits are both located below the horizontal level of the drainage and sewage ditches. The starting ends of the drainage and sewage ditches are higher than the overall structure's horizontal level. The ending ends of the sewage and drainage ditches are connected to the primary and secondary water pits respectively via ramps. An external rainwater ditch is provided at the combined starting ends of the sewage and drainage ditches. The top surface of the ditch is an open structure. The external rainwater ditch is equipped with a gate at the connection point with the drainage ditch and sewage ditch. The gate is sealed and located at the connection point between the external rainwater ditch, drainage ditch and sewage ditch. The displacement of the gate is controlled by a lifting control mechanism. The interior of the primary water pit is equipped with a rainwater component collection device and a sewage pump. By setting up the external rainwater ditch and the lifting control gate structure, the automatic identification and diversion of initial rainwater and subsequent rainwater are realized, effectively preventing highly polluted initial rainwater from mixing into the clean rainwater system, and improving the accuracy and automation level of rainwater and sewage diversion.

[0012] Preferably, the surface of the drainage ditch is provided with a groove, which consists of, from the inside out, a thick granite layer, a resin mortar bonding layer, a resin fiberglass isolation layer, a cement mortar leveling layer, a cement-based penetrating crystalline anti-seepage coating, and an anti-seepage concrete layer. This multi-layer composite anti-seepage structure significantly improves the corrosion resistance and leakage resistance of the drainage ditch, extends its service life, and is particularly suitable for working environments with acidic media in chlorinated paraffin factories.

[0013] Preferably, the secondary water pit structure is the same as the drainage ditch structure. The consistent structural design facilitates construction and maintenance, reduces construction costs, and ensures that the secondary water pit has the same seepage prevention and corrosion resistance as the drainage ditch, thus guaranteeing the overall reliability of the system operation.

[0014] Preferably, the surface of the sewage ditch is provided with a groove, and the groove consists of an anti-corrosion structural layer, a cement-based penetrating crystalline anti-seepage coating, and an anti-seepage reinforced concrete structural layer from the inside out. The sewage ditch adopts a proprietary anti-corrosion and anti-seepage structure, which effectively resists the erosion of strong corrosive media such as hydrochloric acid and prevents sewage leakage from causing secondary pollution to the soil and groundwater.

[0015] Preferably, both the drainage ditch and the sewage ditch are equipped with a top plate at their openings, and both the drainage ditch and the sewage ditch are equipped with a downward guide ramp at their ends. The top plate structure can prevent debris from falling into the ditch, while the guide ramp facilitates the smooth flow of water to the water pit, further improving the drainage efficiency and operational stability of the system.

[0016] Beneficial effects: Compared with existing technologies, this utility model employs a diversion and switching process, collecting rainwater through gravity flow into a rainwater collection tank. The rainwater collection tank automatically monitors rainwater composition indicators, and discharges it into the municipal rainwater pipe network only after it meets standards. Because rainwater may exceed environmental standards in the first 15 minutes of rainfall, rainwater flows through an open channel to a primary water pit in the first 15 minutes of rainfall. Rainwater after 15 minutes is switched by a gate valve to flow directly into a secondary water pit. Water from the primary water pit is then pumped into the sewage system for treatment.

[0017] The wastewater system collects rainwater and workshop flushing wastewater from the first 15 minutes, treats them centrally, and then recycles them to supplement the factory's circulating water supply. Water that cannot be recycled is discharged into a wastewater discharge pond, where wastewater composition indicators are automatically monitored. Once the indicators meet the standards, the wastewater is discharged to the municipal wastewater treatment plant.

[0018] This ensures that environmental standards are met while maximizing the recycling and reuse of rainwater resources.

[0019] By setting up an external rainwater ditch and a gate structure that can be raised and lowered, the system can automatically identify and separate initial rainwater from subsequent rainwater, effectively preventing highly polluted initial rainwater from mixing into the clean rainwater system and improving the accuracy and automation level of rainwater and sewage separation.

[0020] The multi-layer composite seepage-proof structure significantly improves the corrosion resistance and seepage prevention performance of the drainage ditch, extends its service life, and is especially suitable for working environments with acidic media in chlorinated paraffin plants.

[0021] The standardized structural design facilitates construction and maintenance, reduces construction costs, and ensures that the secondary water pit has the same seepage prevention and corrosion resistance as the drainage ditch, thus guaranteeing the overall reliability of the system.

[0022] The drainage ditch adopts a proprietary anti-corrosion and anti-seepage structure, which effectively resists the erosion of strong corrosive media such as hydrochloric acid and prevents sewage leakage from causing secondary pollution to the soil and groundwater.

[0023] The top slab structure prevents debris from falling into the ditch, while the guide ramp facilitates the smooth flow of water into the water pit, further improving the system's drainage efficiency and operational stability. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the drainage ditch structure;

[0025] Figure 2This is a schematic diagram of the sewage ditch structure;

[0026] Figure 3 This is a simplified cross-sectional view of a rainwater and sewage separation system;

[0027] Figure 4 This is a simplified schematic diagram of a rainwater and sewage separation system;

[0028] In the diagram, 1. Thick granite layer, 2. Resin mortar bonding layer, 3. Resin fiberglass isolation layer, 4. Cement mortar leveling layer, 5. Cement-based penetrating crystalline anti-seepage coating, 6. Anti-seepage concrete layer, 7. Top slab, 8. Anti-corrosion structural layer, 9. Anti-seepage reinforced concrete structural layer, 10. External rainwater ditch, 11. Sewage ditch, 12. Primary water pit, 13. Drainage ditch, 14. Secondary water pit, 15. Lifting control mechanism, 16. Gate. Detailed Implementation

[0029] To enhance understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.

[0030] like Figure 1-2 As shown, the structure includes: 1. Thick granite layer; 2. Resin mortar bonding layer; 3. Resin fiberglass isolation layer; 4. Cement mortar leveling layer; 5. Cement-based penetrating crystalline anti-seepage coating; 6. Anti-seepage concrete layer; 7. Top slab; 8. Anti-corrosion structural layer; 9. Anti-seepage reinforced concrete structural layer; 10. External rainwater ditch; 11. Sewage ditch; 12. Primary water pit; 13. Drainage ditch; 14. Secondary water pit; 15. Lifting control mechanism; 16. Gate.

[0031] A rainwater diversion mechanism for a chlorinated paraffin plant includes a drainage ditch 13, a sewage ditch 11, a primary water pit 12, and a secondary water pit 14. The sewage ditch 11 is connected to the primary water pit 12, and the drainage ditch 13 is connected to the secondary water pit 14. The positions of the primary water pit 12 and the secondary water pit 14 are both lower than the horizontal level of the drainage ditch 13 and the sewage ditch 11. The starting ends of the drainage ditch 13 and the sewage ditch 11 are higher than the horizontal level of the overall structure. The ending ends of the sewage ditch 11 and the drainage ditch 13 are respectively connected to the primary water pit 12 and the secondary water pit 14 via ramps. An external rainwater ditch 10 is provided at the starting ends of the sewage ditch 11 and the drainage ditch 13 in a combined connection manner. The top surface of the external rainwater ditch 10 is an open structure. A gate 16 is provided at the connection point of the external rainwater ditch 10 with the drainage ditch 13 and the sewage ditch 11. The gate 16 is densely packed. The sealed connection between the external rainwater ditch 10, drainage ditch 13, and sewage ditch 11 is provided. The gate 16 is controlled by the lifting control mechanism 15. The primary water pit 12 is equipped with a rainwater component collection device and a sewage pump. The surface of the drainage ditch 13 is provided with a groove. From the inside to the outside, the groove consists of a thick granite layer 1, a resin mortar bonding layer 2, a resin fiberglass isolation layer 3, a cement mortar leveling layer 4, a cement-based penetrating crystalline anti-seepage coating 5, and an anti-seepage concrete layer 6. The secondary water pit 14 has the same structure as the drainage ditch 13. The surface of the sewage ditch 11 is provided with a groove. From the inside to the outside, the groove consists of an anti-corrosion structural layer 8, a cement-based penetrating crystalline anti-seepage coating 5, and an anti-seepage reinforced concrete structural layer 9. The openings of the drainage ditch 13 and the sewage ditch 11 are provided with a top plate 7. The end points of the drainage ditch 13 and the sewage ditch 11 are provided with downward guide ramps.

[0032] Instructions for Use: Rainwater is collected by gravity and flows into a rainwater collection tank. The rainwater collection tank automatically monitors rainwater composition indicators, and discharges it into the municipal stormwater network after it meets standards. Because rainwater may exceed environmental standards in the first 15 minutes of rainfall, rainwater flows through an open channel to the primary water sump 12 in the first 15 minutes before rainfall. Rainwater after 15 minutes is switched by a gate valve 16 and flows directly to the secondary water sump 14. Water from the primary water sump 12 is pumped into the sewage system for treatment.

[0033] The wastewater system collects rainwater and workshop flushing wastewater from the first 15 minutes, treats them centrally, and then recycles them to supplement the factory's circulating water supply. Water that cannot be recycled is discharged into a wastewater discharge pond, where wastewater composition indicators are automatically monitored. Once the indicators meet the standards, the wastewater is discharged to the municipal wastewater treatment plant.

[0034] This ensures that environmental standards are met while maximizing the recycling and reuse of rainwater resources.

[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 mechanism for diverting contaminated rainwater from a chlorinated paraffin plant, characterized by The system includes drainage ditches, sewage ditches, primary water pits, and secondary water pits. The sewage ditches are connected to the primary water pits, and the drainage ditches are connected to the secondary water pits. The primary and secondary water pits are both located below the horizontal level of the drainage ditches and sewage ditches. The starting ends of the drainage ditches and sewage ditches are higher than the horizontal level of the overall structure. The ending ends of the sewage ditches and drainage ditches are connected to the primary and secondary water pits via ramps. The starting ends of the sewage ditches and drainage ditches are connected to an external rainwater ditch. The top surface of the external rainwater ditch is an open structure. A gate is installed at the connection point between the external rainwater ditch and the drainage ditches and sewage ditches. The gate is sealed and its displacement is controlled by a lifting control mechanism. The primary water pit is equipped with a rainwater component collection device and a sewage pump.

2. A mechanism for diverting contaminated rainwater from a chlorinated paraffin plant according to claim 1, characterized in that, The surface of the drainage ditch is provided with grooves, which, from the inside out, consist of a thick granite layer, a resin mortar bonding layer, a resin fiberglass isolation layer, a cement mortar leveling layer, a cement-based penetrating crystalline anti-seepage coating, and an anti-seepage concrete layer.

3. A wastewater diversion mechanism for a chlorinated paraffin plant area according to claim 2, characterized in that, The structure of the secondary water pit is the same as that of the drainage ditch.

4. The rainwater diversion mechanism for a chlorinated paraffin plant area according to claim 1, characterized in that, The surface of the sewage ditch is provided with grooves, and the grooves are arranged in sequence from the inside to the outside as follows: anti-corrosion structural layer, cement-based penetrating crystalline anti-seepage coating, and anti-seepage reinforced concrete structural layer.

5. A wastewater diversion mechanism for a chlorinated paraffin plant area according to any one of claims 2-4, characterized in that, The drainage ditch and sewage ditch are both equipped with top plates at their openings, and both have downward guide ramps at their ends.

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