Alloy wastewater treatment and discharge device

Abstract

The utility model relates to the technical field of alloy wastewater treatment, in particular to an alloy wastewater treatment and discharge device which comprises underground collecting tanks, a lifting pump is arranged between the underground collecting tanks, and the input end and the output end of the lifting pump are communicated with the two adjacent underground collecting tanks respectively. An emulsification collecting barrel, a TMF tubular microfiltration membrane, a reverse osmosis system, an MVR evaporator, an ozone system and a diaphragm filter press are arranged on the outer side of the underground collecting tank, an overflow collecting tank, a PH adjusting tank, an RO concentrated water tank, an evaporation raw water tank and a sludge thickening tank are arranged on the inner side of the underground collecting tank, and the emulsification collecting barrel is communicated with the interior of the overflow collecting tank. The TMF tubular microfiltration membrane is communicated with the PH regulating tank, the reverse osmosis system is communicated with the RO concentrated water tank, the MVR evaporator is communicated with the raw water evaporation tank, the ozone system is communicated with the MVR evaporator, and the diaphragm filter press is communicated with the sludge concentration tank.

Description

Technical Field

[0001] The utility model relates to the technical field of alloy wastewater treatment, in particular to an alloy wastewater treatment and discharge device. Background Technique

[0002] Copper alloy is an alloy composed of copper and other elements, which is widely used in various industries. It is favored for its excellent electrical conductivity, thermal conductivity, corrosion resistance and mechanical properties. During the production process of copper alloy products, wastewater containing copper ions will be generated. If these wastewaters are directly discharged without treatment, it will cause serious pollution to the environment.

[0003] There are chemical precipitation method, electrolysis method, ion exchange method and biological treatment method for the treatment of copper alloy production wastewater. The above-mentioned various copper alloy treatment methods all have certain deficiencies:

[0004] 1. The traditional process of adding medicine for coagulation and separating in sedimentation tank cannot make the treated water reach the discharge standard;

[0005] 2. By adopting ozone catalytic technology, the problem that volatile wastewater evaporates directly and COD enters the condensate water and then circulates and accumulates at the front end is solved;

[0006] 3. The problem that the purification cost of multiple sets of RO equipment with conductivity ≤ 50 us / cm is high.

[0007] Therefore, it is necessary to provide an alloy wastewater treatment and discharge device to solve the above technical problems. Content of the Utility Model

[0008] To solve the above technical problems, the utility model provides an alloy wastewater treatment and discharge device, which first performs pretreatment and then uses tubular ultrafiltration membrane for filtration. Under the same pretreatment process (chemical medicine adding and coagulation), it can obtain lower heavy metal concentration of treated water, meet relevant discharge or reuse standards, and is the same as the heavy metal wastewater reuse process. The tubular microfiltration membrane process can make the water recovery rate before reverse osmosis reach 100%, there will be no problem of COD cycle accumulation, the consumption of medicament is reduced, the separation efficiency is high, and the zero discharge ZLD and low-carbon energy conservation are truly realized.

[0009] An alloy wastewater treatment and discharge device provided by the utility model includes:

[0010] It includes underground collection ponds, with lift pumps installed between the underground collection ponds. The input and output ends of the lift pumps are respectively connected to two adjacent underground collection ponds. Emulsion collection barrels, TMF tubular microfiltration membranes, reverse osmosis systems, MVR evaporators, ozone systems, and diaphragm filter presses are respectively arranged outside the underground collection ponds. Inside the underground collection ponds, overflow collection ponds, pH adjustment ponds, RO concentrate water tanks, evaporation raw water ponds, and sludge thickening ponds are respectively provided. The emulsion collection barrels are internally connected to the overflow collection ponds, the TMF tubular microfiltration membranes are connected to the pH adjustment ponds, the reverse osmosis systems are connected to the RO concentrate water tanks, the MVR evaporators are connected to the evaporation raw water ponds, the ozone systems are connected to the MVR evaporators, and the diaphragm filter presses are connected to the sludge thickening ponds.

[0011] Preferably, a coagulation reaction pond, a sedimentation pond, a TMF circulation pond, and a TMF water production pond are also provided inside the underground collection ponds. A pneumatic diaphragm pump is arranged outside the coagulation reaction pond. The coagulation reaction pond, the sedimentation pond, the TMF circulation pond, and the TMF water production pond are connected through lift pumps and pneumatic diaphragm pumps. The coagulation reaction pond, the sedimentation pond, the TMF circulation pond, and the TMF water production pond can coagulate and precipitate the alloy wastewater and the medicine, and complete the circulation and collection of the clear water after precipitation.

[0012] Preferably, the TMF tubular microfiltration membrane internally includes a TMF tubular microfiltration membrane device, which is connected to the pH adjustment pond, the coagulation reaction pond, the sedimentation pond, the TMF circulation pond, and the TMF water production pond. The TMF tubular microfiltration membrane device can ultrafilter the clear water after precipitation, realize the purification of the clear water, make the purified water source reach the discharge standard, and complete the pretreatment.

[0013] Preferably, a recycled water pond and a pure water tank are provided at the position where the RO concentrate water tank is arranged in the underground collection pond. The reverse osmosis system internally includes an RO device, an HPRO device, a pure water RO device, and an ROCIP device. The input ports of the RO device and the HPRO device are connected to the inside of the RO concentrate water tank, the input port of the pure water RO device is connected to the recycled water pond, the input port of the ROCIP device is connected to the pure water tank, the output ports of the RO device and the HPRO device are connected to the recycled water pond, and the output port of the pure water RO device is connected to the pure water tank. The reverse osmosis system can perform activated carbon adsorption on the purified water source, degrade some organic pollutants in the water by using filters, and realize the removal of various microorganisms and organic matters.

[0014] Preferably, a condensate water collection pool is provided at the position where the underground collection pool opens the evaporation raw water pool. The input port of the MVR evaporator is communicated with the evaporation raw water pool, and the output port of the MVR evaporator is communicated with the condensate water collection pool. The ozone system includes an ozone reaction tower, an ozone oxygen generator integrated machine, and a tail gas destroyer. The ozone oxygen generator integrated machine and the tail gas destroyer are located inside the ozone reaction tower. The ozone oxygen generator integrated machine is communicated with the inside of the condensate water collection pool. The evaporation system can perform single-effect degradation evaporation and secondary evaporation on the used chemical solution, and transport the condensed liquid after evaporation into the ozone system for treatment, realizing true zero discharge of wastewater.

[0015] Preferably, the inside of the diaphragm filter press includes a filter press pump. The input port of the filter press pump is communicated with the inside of the sludge thickening pool. The filter press pump can separate the water in the sludge to realize the outsourcing disposal of dry sludge.

[0016] Compared with the related technology, an alloy wastewater treatment and discharge device provided by the present invention has the following beneficial effects:

[0017] 1. The various functional devices of the present invention are reasonably combined and installed, with a small floor area, convenient for operation and rapid installation. By adopting the method of pre-treatment first and then filtering with a tubular ultrafiltration membrane, the separation efficiency is high, the effluent water quality is stable for reuse, and no flocculant needs to be added, with a small chemical consumption. The tubular microfiltration membrane process can make the water recovery rate before reverse osmosis reach 100%, solve the problem of COD cyclic accumulation, and truly realize zero discharge ZLD low-carbon energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of a preferred embodiment of an alloy wastewater treatment and discharge device provided by the present invention;

[0019] Figure 2 is Figure 1 a schematic structural diagram of the MVR evaporator shown;

[0020] Figure 3 is Figure 1 a schematic structural diagram of the ozone system shown;

[0021] Figure 4 is Figure 1 a schematic structural diagram of the lifting pump and pipeline connection shown;

[0022] Figure 5 is Figure 1 a schematic structural diagram of the position of the sedimentation tank shown.

[0023] Numbers in the figure: 1, underground collection tank; 11, emulsification collection tank; 12, TMF tubular microfiltration membrane; 13, reverse osmosis system; 14, MVR evaporator; 15, ozone system; 16, diaphragm filter press; 101, overflow collection tank; 102, lifting pump; 201, PH adjustment tank; 202, coagulation reaction tank; 203, sedimentation tank; 204, pneumatic diaphragm pump; 205, TMF circulation tank; 206, TMF tubular microfiltration membrane device; 208, TMF water production pool; 301, RO device; 303, RO concentrated water tank; 304, HPRO device; 305, recycled water pool; 306, pure water RO device; 307, pure water tank; 308, ROCIP device; 401, evaporation raw water pool; 403, condensate water collection pool; 501, ozone reaction tower; 502, ozone oxygen generator; 503, tail gas destroyer; 601, sludge thickening tank; 602, filter press pump. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0025] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0026] Please refer to the attached Figures 1-4 The present invention provides an alloy wastewater treatment and discharge device, and the alloy wastewater treatment and discharge device includes:

[0027] Underground collection tank 1, blind collection tank is the receiving position of surface treatment flushing overflow water. The alloy wastewater entering underground collection tank 1 first enters coagulation reaction tank 202, and the wastewater is automatically adjusted to a suitable pH by adding acid and alkali through online instruments. Subsequently, coagulant is added for coagulation reaction, so that the colloidal particles and tiny suspended matter in the wastewater react to form flocs, and then flows into TMF circulation tank 205, and is transported by the circulation pump to the TMF membrane filtration system for mud and water separation. The retention molecular weight of tubular ultrafiltration membrane belongs to the category of ultrafiltration, so tubular membrane can provide better material conditions for downstream processes and improve product recovery rate. At the same time, organic tubular membrane components have strong anti-pollution ability and service life, and can be widely used in material clarification filtration, industrial wastewater treatment and other fields.

[0028] During the membrane filtration process, copper ions in the water are retained on one side of the membrane and thus removed. The advantages of membrane filtration are high separation efficiency, large processing volume, and good effluent quality. The sludge is discharged to the sludge concentration tank 601; after the pre-treatment, most of the overall water quality SS is removed.

[0029] After being treated by the TMF tubular microfiltration membrane 12, the water source has clear effluent, which is transported by a pump to an activated carbon filter to adsorb and degrade some organic pollutants in the water. The effluent from the carbon filter enters the RO unit for desalination treatment. The reverse osmosis membrane is the core component of reverse osmosis technology. It is a membrane separation operation that separates the solvent from the solution with a pressure difference as the driving force. A pressure is applied to the feed liquid on one side of the membrane. When the pressure exceeds its osmotic pressure, the solvent will perform reverse osmosis against the direction of natural osmosis, so that the permeated solvent, that is, the permeate, can be obtained on the low-pressure side of the membrane, and the concentrated solution, that is, the concentrate, can be obtained on the high-pressure side. According to the fact that other substances cannot pass through the semipermeable membrane, these substances and water are separated. The membrane pore size of the reverse osmosis membrane is very small, which can effectively remove dissolved salts, colloids, microorganisms, organic matter, etc. in the water. The system has good effluent quality, simple process and convenient operation.

[0030] The effluent from the carbon filter enters the RO unit for desalination treatment, and the RO concentrate is further concentrated by HPRO; most of the salts and pathogenic microorganisms in the wastewater are removed through RO and HPRO treatment; the effluent quality is excellent and is retained in the reuse water tank 305 for reuse; part of the water in the reuse water tank 305 is treated by the pure water RO system and then reused in the laboratory.

[0031] The evaporation raw water tank 401 collects the HPRO concentrate, the degreasing liquid regularly replaced in surface treatment, the pickling liquid regularly replaced in surface treatment, the passivation liquid regularly replaced in surface treatment, and the emulsion.

[0032] Several streams of high-concentration waste liquid are mixed and then enter the MVR evaporation system. Using single-effect falling film evaporation with an evaporation temperature of about 80 °C, the secondary steam is transported to a centrifugal steam compressor. According to the steam temperature and pressure required by the heating chamber of the evaporation device: for the filtrate from the pre-filtration process, corresponding to the boiling point required for its evaporation and concentration, the pressurized secondary steam is returned to the evaporation system and used as a heat source for recycling. After the system operates normally, primary steam is saved.

[0033] The condensate generated by evaporation enters the ozone system 15 for further treatment, and the remaining concentrated mother liquor is regularly collected and disposed of externally to achieve true zero liquid discharge.

[0034] The evaporation condensate returns to the front end after ozone catalytic treatment to avoid the cyclic accumulation of COD. The working principle of the ozone catalytic oxidation tower is based on the strong oxidation performance of ozone (O3) molecules.

[0035] When ozone gas passes through the wastewater to be treated in the presence of the SAO3 ozone catalyst, it can react with pollutant molecules and oxidize them into harmless substances, such as being converted into carbon dioxide (CO2), water (H2O) and other harmless gases or substances, so as to achieve the effect of reducing the COD of the wastewater.

[0036] The system sludge is derived from the sludge generated in the physicochemical stage. The sludge is regularly discharged to the sludge thickening tank 601 for thickening. After thickening, it is pumped to a filter press for filtration. The filtrate is transported to the raw water tank for further treatment, and the dry sludge is entrusted to external parties for disposal.

[0037] It should be noted that: the pipelines connecting the various water tanks in this technical solution are all underground pipelines, which are not shown in the figure.

[0038] The circuits and controls involved in the present utility model are all prior arts and will not be elaborated here.

[0039] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. An alloy wastewater treatment and discharge device, characterized in that, It includes underground collection pools (1), with lift pumps (102) provided between the underground collection pools (1). The input and output ends of the lift pumps (102) are respectively connected to two adjacent underground collection pools (1). Outside the underground collection pools (1), there are respectively an emulsification collection barrel (11), a TMF tubular microfiltration membrane (12), a reverse osmosis system (13), an MVR evaporator (14), an ozone system (15), and a diaphragm filter press (16). Inside the underground collection pools (1), there are respectively an overflow water collection pool (101), a pH adjustment pool (201), an RO concentrated water tank (303), an evaporation raw water pool (401), and a sludge thickening pool (601). The emulsification collection barrel (11) is internally connected to the overflow water collection pool (101), the TMF tubular microfiltration membrane (12) is connected to the pH adjustment pool (201), the reverse osmosis system (13) is connected to the RO concentrated water tank (303), the MVR evaporator (14) is connected to the evaporation raw water pool (401), the ozone system (15) is connected to the MVR evaporator (14), and the diaphragm filter press (16) is connected to the sludge thickening pool (601).

2. The alloy wastewater treatment and discharge device according to claim 1, characterized in that, Inside the underground collection pool (1), there are also a coagulation reaction pool (202), a sedimentation tank (203), a TMF circulation pool (205), and a TMF product water pool (208). Outside the coagulation reaction pool (202), there is a pneumatic diaphragm pump (204). The coagulation reaction pool (202), the sedimentation tank (203), the TMF circulation pool (205), and the TMF product water pool (208) are connected through the lift pump (102) and the pneumatic diaphragm pump (204).

3. The alloy wastewater treatment and discharge device according to claim 1, characterized in that, Inside the TMF tubular microfiltration membrane (12), there is a TMF tubular microfiltration membrane device (206). The TMF tubular microfiltration membrane device (206) is connected to the pH adjustment pool (201), the coagulation reaction pool (202), the sedimentation tank (203), the TMF circulation pool (205), and the TMF product water pool (208).

4. An alloy wastewater treatment and discharge device according to claim 1, characterized in that, At the position where the RO concentrated water tank (303) is opened in the underground collection pool (1), there are a recycled water pool (305) and a pure water tank (307). Inside the reverse osmosis system (13), there are an RO device (301), an HPRO device (304), a pure water RO device (306), and an RO CIP device (308). The input ports of the RO device (301) and the HPRO device (304) are internally connected to the RO concentrated water tank (303). The input port of the pure water RO device (306) is connected to the recycled water pool (305). The input port of the RO CIP device (308) is connected to the pure water tank (307). The output ports of the RO device (301) and the HPRO device (304) are connected to the recycled water pool (305). The output port of the pure water RO device (306) is connected to the pure water tank (307).

5. An alloy wastewater treatment and discharge device according to claim 1, characterized in that, A condensate water collection tank (403) is provided at the position where the evaporation raw water tank (401) is provided in the underground collection tank (1). The input port of the MVR evaporator (14) is communicated with the evaporation raw water tank (401), and the output port of the MVR evaporator (14) is communicated with the condensate water collection tank (403). The ozone system (15) includes an ozone reaction tower (501), an ozone oxygen generation integrated machine (502), and a tail gas destroyer (503). The ozone oxygen generation integrated machine (502) and the tail gas destroyer (503) are located inside the ozone reaction tower (501), and the ozone oxygen generation integrated machine (502) is communicated with the inside of the condensate water collection tank (403).

6. An alloy wastewater treatment and discharge device according to claim 1, characterized in that, The diaphragm filter press (16) internally includes a filter press pump (602), and the input port of the filter press pump (602) is communicated with the inside of the sludge thickening tank (601).

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