CN116262652A - A waste water treatment system for wire saw processing - Google Patents
A waste water treatment system for wire saw processing Download PDFInfo
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Abstract
本发明涉及废水处理技术领域，公开了一种线锯加工废水处理系统，包括生化处理装置、与生化处理装置连通的回用装置、以及分别连通生化处理装置的化学镍废水处理装置、含镍废水处理装置、前处理废水处理装置和综合废水处理装置，生化处理装置包括至少两个生化处理器，回用装置包括至少两个反渗透组件，生化处理装置、回用装置、化学镍废水处理装置、含镍废水处理装置、前处理废水处理装置和/或综合废水处理装置与废气处理装置连通，废气处理装置包括水洗部、氧化部、碱洗部以及生化部；该系统采用分质分流方式将不同工段的废水进行单独处理，处理过程简单且便于含镍污泥的回收，废气处理装置占地小、处理时效长、成本低且完全脱臭的技术效果。
The invention relates to the technical field of wastewater treatment, and discloses a wire saw processing wastewater treatment system, which includes a biochemical treatment device, a recycling device connected to the biochemical treatment device, a chemical nickel wastewater treatment device connected to the biochemical treatment device, and nickel-containing wastewater Treatment device, pre-treatment wastewater treatment device and comprehensive wastewater treatment device, biochemical treatment device includes at least two biochemical processors, recycling device includes at least two reverse osmosis components, biochemical treatment device, recycling device, chemical nickel wastewater treatment device, The nickel-containing wastewater treatment device, the pre-treatment wastewater treatment device and/or the comprehensive wastewater treatment device are connected to the waste gas treatment device. The waste gas treatment device includes a water washing part, an oxidation part, an alkali cleaning part and a biochemical part; The wastewater in the workshop section is treated separately, the treatment process is simple and convenient for the recovery of nickel-containing sludge, the waste gas treatment device occupies a small area, the treatment time is long, the cost is low and the technical effect of complete deodorization.
Description
Technical Field
The invention relates to the technical field of wastewater treatment, in particular to a wire saw processing wastewater treatment system.
Background
A large amount of wastewater is generated in wire saw processing production, the generated wastewater mainly comprises chemical nickel wastewater, nickel plating wastewater, pretreatment wastewater and domestic sewage, a large amount of substances polluting the environment such as heavy metals, organic matters and the like are contained in the generated wastewater, if the substances are not subjected to purification treatment, serious environmental pollution can be caused when the substances are discharged into the environment, and the generated wastewater is mainly treated by a physical and chemical combination biochemical method in the prior art. As publication No. CN108162216B, there is disclosed a diamond wire cut crystalline silicon production line comprising: (i) The diamond wire cutting crystalline silicon unit comprises at least one wire cutting machine, wherein the wire cutting machine is provided with a water storage tank for storing circulating water, and the water storage tank is connected with a first reagent tank and a second reagent tank; (ii) a wastewater collection system; (iii) a wastewater treatment system; (iv) a water supply system. According to the invention, the circulating water is selectively regulated and controlled in the water storage tank of the diamond wire cutting crystalline silicon wire cutting machine, the aim of regulating and controlling the circulating water compositions of different wire cutting machines according to the working state of the wire cutting machine can be realized, the composition can be properly regulated aiming at the working state of the wire cutting machine, and the problem that the production water is excessively enriched with a certain component due to excessive addition of a reagent is avoided. The generated wastewater in the prior art is usually collected and then treated, and the problems that the subsequent treatment process is complex, and the recovery efficiency of nickel is low due to more impurities in the nickel-containing sludge recovered in the treatment process exist in the mode.
When the wire saw processing wastewater treatment system is operated, a large amount of malodorous gas is generated, the main components of the malodorous gas are ammonia gas and hydrogen sulfide, the malodorous gas is usually treated by adopting a mode of combining chemical leaching with high-altitude dilution of a chimney in the prior art, but the treatment mode has the problems of large volume and high maintenance cost of a treatment device.
Disclosure of Invention
In order to overcome the problem that nickel-containing sludge recovery efficiency is low and waste gas treatment timeliness is low in the wire saw processing waste water treatment among the prior art, the application provides a wire saw processing waste water treatment system, this waste water treatment system adopts the matter separation reposition of redundant personnel processing mode to carry out independent treatment with the waste water that different workshop sections produced, the treatment process is simpler and the recovery efficiency of nickel-containing sludge of being convenient for is high, this waste water treatment system's waste gas treatment adopts chemical leaching to combine microbiological method to handle, processing apparatus takes up an area of for a short time, and can reach the effect of complete deodorization, adopt the deodorization subassembly that this application adopted to possess the treatment ageing length and with low costs technological effect simultaneously.
The specific technical scheme of the invention is as follows:
the utility model provides a fretsaw processing effluent disposal system, includes biochemical treatment plant, with the retrieval and utilization device of biochemical treatment plant intercommunication and communicate biochemical treatment plant's chemical nickel effluent disposal plant, nickeliferous effluent disposal plant, pretreatment effluent disposal plant and comprehensive effluent disposal plant respectively, biochemical treatment plant includes two at least biochemical treatment ware, retrieval and utilization device includes two at least reverse osmosis unit, biochemical treatment plant, retrieval and utilization device, chemical nickel effluent disposal plant, nickeliferous effluent disposal plant, pretreatment effluent disposal plant and/or comprehensive effluent disposal plant and exhaust-gas treatment plant intercommunication, exhaust-gas treatment plant includes washing portion, the oxidation portion of communicating with washing portion, the alkaline wash portion of communicating with oxidation portion and the biochemical portion of communicating with alkaline wash portion.
The application provides a coping saw processing effluent disposal system, this application has adopted the mode of matter splitting reposition of redundant personnel to handle and has carried out independent treatment to the waste water that different workshop sections produced, and pretreatment effluent disposal device is including two reaction tanks sinks that communicate in proper order, adopts ferrous, hydrogen peroxide, alkali, ca in the preceding stage reaction sedimentation tank 2+ Removing pollutants such as total phosphorus, organic matters and the like in nickel-containing wastewater by PAC and PAM, and adopting alkali and Ca in a subsequent stage reaction sedimentation tank 2+ PAC and PAM further remove total phosphorus and suspended matters, and supernatant obtained after sludge precipitation is separated enters a biochemical treatment device;
the chemical nickel wastewater treatment device comprises a Fenton reaction tank and a reaction sedimentation tank which are sequentially communicated, wherein organic matters are removed in the Fenton reaction tank by oxidation, and then alkali and Ca (OH) are adopted 2 And (3) separating nickel ions, ferrous ions and phosphate by PAM (polyacrylamide), further removing nickel ions in a reaction sedimentation tank through sodium hypochlorite, alkali, recapturing agent, PAC (PAC) and PAM, enabling filtered supernatant to enter a nickel monitoring tank, and enabling wastewater reaching the nickel standard to enter a biochemical treatment device.
The nickel-containing wastewater treatment device comprises an adjusting tank, a first-stage reaction sedimentation tank and a second-stage reaction sedimentation tank which are sequentially communicated, wherein alkali, PAC and PAM are adopted in the first-stage reaction sedimentation tank to sediment nickel ions, sodium hypochlorite, alkali, recapture agent, PAC and PAM are adopted in the second-stage reaction sedimentation tank to sediment nickel ions again, filtered supernatant fluid firstly enters ion exchange resin, and in the nickel monitoring tank, wastewater reaching the nickel standard enters the biochemical treatment device.
The comprehensive wastewater treatment device comprises an adjusting tank and a reaction sedimentation tank which are sequentially communicated, wherein PAC and PAM are adopted in the reaction sedimentation tank to remove part of organic matters and solid suspended matters, and filtered supernatant enters the biochemical treatment device.
The biochemical treatment device comprises a biochemical regulating tank, a hydrolysis tank, a first-stage AO tank, a second-stage AO tank and a reaction sedimentation tank which are sequentially communicated, wherein the pH of the wastewater is regulated to 7-7.5 by adding acid, macromolecule organic matters are decomposed into micromolecule organic matters by hydrolysis acidification flora in the hydrolysis tank, organic nitrogen is converted into ammonia gas, the AO tank comprises an anaerobic section and a good-cultivation section, denitrifying bacteria in the anaerobic section convert nitrate nitrogen into nitrogen, good-cultivation flora in the good-cultivation section convert ammonia nitrogen into nitrate nitrogen, the two are combined to complete the denitrification effect of the wastewater, meanwhile, partial COD is removed, the denitrification effect can be enhanced by two-stage AO times, COD, solid suspended matters and heavy metals in the wastewater are removed by sodium carbonate, PAC and PAM in the reaction sedimentation tank, and the treated wastewater enters into a recycling device.
The recycling device comprises an ultrafiltration device, a first-stage reverse osmosis device, a second-stage reverse osmosis device and a concentrated water reaction tank which are sequentially communicated, impurities in the wastewater are removed through the ultrafiltration device and the two-stage reverse osmosis device, clear water which can be recycled in production is generated, alkali, PAC and PAM are adopted in the concentrated water reaction tank to remove pollutants in the concentrated water, and the treated concentrated water is separated from sludge, and is discharged to a sewage station after pH callback filtration.
The fretsaw processing effluent disposal system of this application still includes exhaust treatment device, and this exhaust treatment device breaks away from the foul smell that produces through the method that the chemistry drip washing combines microbiological treatment, and this exhaust treatment device possesses and takes up an area of little, with low costs and can accomplish the technological effect who breaks away from the foul smell.
Preferably, the biochemical part comprises a biochemical tank and at least one deodorizing component arranged in the biochemical tank, and the deodorizing component comprises a hollow carrier layer and a microporous substrate layer attached to the carrier layer;
preferably, the method for preparing the deodorization assembly comprises the following steps:
(1) Dispersing alkali-free glass fiber A in sulfuric acid solution to prepare slurry A, deslagging, diluting the slurry A to the mass concentration of 0.2-0.3%, adding water-retaining particles, wet forming to prepare wet paper A, and adding acrylic ester emulsion into the wet paper A to prepare a hollow carrier layer;
(2) Dispersing alkali-free glass fiber B in sulfuric acid solution to prepare slurry B, deslagging, diluting the slurry B to the mass concentration of 0.2-0.3%, adding water-retaining particles, forming by wet method to prepare wet paper B, and adding acrylic ester emulsion into the wet paper B to prepare a microporous substrate layer;
(3) Bonding the mesoporous carrier layer prepared in the step (1) with the microporous substrate layer prepared in the step (2), and drying and dehydrating to prepare a deodorizing carrier;
(4) And (3) loading microorganism immobilized activated carbon particles into gaps of a mesoporous carrier layer of the deodorization carrier prepared in the step (3) and soaking the gaps in a culture medium to prepare the deodorization component.
The deodorization subassembly in this application comprises cavity carrier layer and micropore substrate layer, cavity carrier layer and micropore carrier layer can form one side and be the pore structure of micropore opposite side for the mesopore, microorganism immobilization active carbon granule is loaded to the hole of deodorization subassembly in through the mesopore, in the waste gas that waits to handle enters into the hole in the deodorization subassembly through the micropore layer, microorganism can handle the foul smell that waits to handle, microorganism needs sufficient moisture and nutrient at the during operation, consequently, this application has added the granule that keeps water in the mesopore carrier layer, this granule that keeps water adopts the polyacrylic acid hydrogel to make, this granule that keeps water possesses hydrophilicity, can take place the volume expansion after absorbing water, extrude the parcel with the microorganism in the mesopore and form airtight space, simultaneously the granule that keeps water can absorb moisture and nutrient substance when using, can be slow provide moisture and nutrition for the microorganism in the follow-up use, guarantee that the microorganism can have extremely strong timeliness.
Preferably, the preparation method of the water-retaining particles comprises the following steps: 6 parts of polyethylene glycol diacrylate and 4 parts of acrylic acid are added into deionized water to prepare a solution A, 0.1 part of an initiator and 0.15 part of a cross-linking agent are added into the solution to prepare a solution B by ultrasonic treatment, and the solution B is transferred into a die to react for 5 hours at 70 ℃ under the nitrogen atmosphere to prepare the water-retaining particles.
Preferably, the alkali-free glass fiber A in the step (1) comprises the following components in parts by weight of 10-20: 80-90 of 5mm alkali-free glass fiber and 0.3mm alkali-free glass fiber,
preferably, in the step (1), the mass concentration of the slurry A is 2.5-3%, the pH value is 3-3.5, and the tapping degree is 50-55 DEG SR.
Preferably, the alkali-free glass fiber A in the step (2) comprises the following components in parts by weight of 30-40: 60-70 of 0.3mm alkali-free glass fiber and 4.5mm alkali-free glass fiber.
Preferably, in the step (2), the mass concentration of the slurry B is 2.5-3%, the pH value is 3-3.5, and the tapping degree is 50-55 DEG SR.
Preferably, the step (3) adopts acrylate emulsion bonding.
Preferably, the preparation step of the microorganism-immobilized activated carbon particles in the step (4) includes: the microbial deodorization microbial inoculum is subjected to expansion culture to prepare a bacterial liquid, and the activated carbon particles are added into the bacterial liquid to carry out microbial loading and then are dried and dehydrated to prepare the activated carbon immobilized microorganism.
Preferably, the initiator is ammonium persulfate.
Preferably, the crosslinking agent is N, N-methylenebisacrylamide.
Compared with the prior art, the application has the following technical effects:
(1) According to the wire saw processing wastewater treatment system, wastewater generated in different working sections is treated independently in a quality-dividing and flow-dividing treatment mode, the treatment process is simpler, and the recovery efficiency of nickel-containing sludge is high;
(2) The waste gas treatment of the wire saw processing waste water treatment system adopts chemical leaching combined with microorganism method treatment, the treatment device occupies small area, and the effect of complete deodorization can be achieved;
(3) The deodorization subassembly that this application adopted possesses the long and low cost's of treatment ageing technological effect.
Drawings
FIG. 1 is a schematic diagram of the structure of a wastewater treatment system for wire saw processing of the present invention.
FIG. 2 is a schematic structural view of the chemical nickel wastewater treatment apparatus of the present invention.
FIG. 3 is a schematic structural view of the nickel-containing wastewater treatment apparatus of the present invention.
FIG. 4 is a schematic structural view of a pretreatment wastewater treatment device according to the present invention.
FIG. 5 is a schematic diagram of the structure of the integrated wastewater treatment apparatus of the present invention.
FIG. 6 is a schematic diagram showing the structure of the biochemical treatment apparatus of the present invention.
FIG. 7 is a schematic structural view of the wastewater reuse apparatus of the present invention.
Detailed Description
The invention is further described below with reference to examples.
Example 1:
as shown in fig. 1, a wire saw processing wastewater treatment system comprises a biochemical treatment device, a recycling device communicated with the biochemical treatment device, and a chemical nickel wastewater treatment device, a pretreatment wastewater treatment device and a comprehensive wastewater treatment device which are respectively communicated with the biochemical treatment device, wherein the biochemical treatment device, the recycling device, the chemical nickel wastewater treatment device, the pretreatment wastewater treatment device and the comprehensive wastewater treatment device are communicated with the wastewater treatment device, and the wastewater treatment device comprises a water washing part, an oxidation part communicated with the water washing part, an alkaline washing part communicated with the oxidation part and a biochemical part communicated with the alkaline washing part.
As shown in FIG. 2, the chemical nickel wastewater treatment device comprises a chemical nickel wastewater regulating tank, a first-stage Fenton reaction sedimentation tank and a second-stage reaction sedimentation tank which are sequentially communicated, wherein the chemical nickel wastewater regulating tank (carbon steel three-step five-oil corrosion prevention, the size is 1.4mx1.7mx4.5m, and the flow is 7 m) 3 The chemical nickel lift pump (flow rate 2 m) is arranged in the (d) 3 A lift 15m, a power of 0.75 kW), an ultrasonic liquid level meter (0-5 m,4-20 mA), an electromagnetic flowmeter (DN 25) and a perforated pipe; primary Fenton reaction sedimentation tank (carbon steel three-cloth five-oil corrosion prevention, size of 2.6mx1.7mx4.5m, oxidation section of 5 m) 3 The size of the sedimentation tank is 1.6mx1.7mx4.5m, a pH meter and a sludge pump (the power is 1.1kW, the flow is 5 m) are arranged in the sedimentation tank 3 /H, head of 10 m), stirrer (JBJ 600, power of 0.75 kW), first-stage Fenton reaction sedimentation tanks H respectively 2 SO 4 Dosing device (2000L tank, metering pump 2, 53L/H,10bar, 25W), ferrous dosing device (1500L, stirrer 0.75kW, metering pump 2, 53L/H,10bar, 25W), H 2 O 2 Dosing devices (storage tank 2000L, metering pump X2, 53L/h,10bar, 25W), naOH dosing devices (storage tank 2000L, metering pump X2, 53L/h,10bar, 25W), PAC dosing device (1500L, stirrer 0.75kW, metering pump X2, 53L/h,10bar, 25W), PAM dosing device (1500L, stirrer 0.75kW, metering pump X2, 53L/h,10bar, 25W) and calcium salt dosing device (1500L, stirrer 0.75kW, metering pump X2, 200L/h,10bar, 25W) are in communication; two-stage reaction sedimentation tank (carbon steel three-cloth five-oil corrosion prevention, size is 2.6mx1.7mx4.5 m, oxidation section is 5 m) 3 The size of the sedimentation tank is 1.6mx1.7mx4.5m, a pH meter and a sludge pump (the power is 1.1kW, the flow is 5 m) are arranged in the sedimentation tank 3 And/h, the lift is 10 m), a stirrer (JBJ 600, the power is 0.75 kW), and the secondary reaction sedimentation tank is respectively communicated with a PAM dosing device, a PAC dosing device and a NaOH dosing device;
as shown in FIG. 3, the nickel-containing wastewater treatment device comprises a nickel-containing wastewater regulating tank, a primary nickel-containing wastewater reaction sedimentation tank, a secondary nickel-containing wastewater reaction sedimentation tank, a sand filter, ion exchange resin, a nickel monitoring tank and a nickel-containing sludge tank which are communicated in sequence, wherein the nickel-containing wastewater regulating tank (carbon steel three-cloth five-oil corrosion prevention, flow rate is 110m 3 The size of the nickel-containing wastewater lifting pump (flow rate is 5 m) is arranged in the size of 4.0mX3.7mX4.5m 3 The lift is 15m, the power is 1.1 kW), an ultrasonic liquid level meter (0-5 m,4-20 mA), an electromagnetic flowmeter (DN 32), a blower (SSR 65,5.5 kW) and a perforated pipe; primary nickel-containing wastewater reaction sedimentation tank (carbon steel three-cloth five-oil corrosion prevention, flow 110 m) 3 And/d, the size is 3.0mX3.7mX4.5 m, and the reaction tank is 8m 3 The surface load of the sedimentation tank is 0.55m 3 /m 2 The pH meter (0-14) is arranged in h), and the sludge pump (flow is 5m 3 The power is 1.1kW, the lift is 10 m), a reaction stirrer (JBJ 600, the power is 0.75kW, omega=127 r/min), and the primary nickel-containing wastewater reaction sedimentation tank is respectively communicated with a NaOH dosing device, a PAM dosing device and a PAC dosing device; secondary nickel-containing wastewater reaction sedimentation tank (carbon steel three-cloth five-oil corrosion prevention, flow 110 m) 3 And/d, the size is 3.0mX3.7mX4.5 m, and the reaction tank is 8m 3 The surface load of the sedimentation tank is 0.55m 3 /m 2 The pH meter and a sludge pump (flow rate is 5 m) are arranged in h) 3 And/h, the power is 1.1kW, the lift is 10 m), an ultrasonic liquid level meter (0-5 m,4-20 mA) and an electromagnetic flowmeter (DN 32), and the secondary nickel-containing wastewater reaction sedimentation tank is respectively filled with NaOH in a dosing wayThe PAM dosing device, the PAC dosing device and the sodium hypochlorite dosing device (2000L of a storage tank, 2 stations of a metering pump, 53L/h,10bar and 25W) are communicated; sand filter (Quartz sand filter tank, flow 110 m) 3 D, carbon steel lining rubber is anti-corrosion); ion exchange resin (flow 110 m) 3 D, carbon steel lining rubber is anti-corrosion); the nickel monitoring pool (flow 110m3/d, carbon steel three-cloth five-oil corrosion prevention, size is 1.8mX3.7mX4.5 m), and a lifting pump, an ultrasonic liquid level meter and an electromagnetic flowmeter are arranged in the nickel monitoring pool; a sludge pump and a plate-and-frame filter press are arranged in the nickel-containing sludge tank (the flow is 110m3/d, the carbon steel is three-cloth and five-oil corrosion prevention, and the size is 4.5mx1.8mx4.5m);
as shown in FIG. 4, the pretreatment wastewater treatment apparatus comprises a pretreatment wastewater adjustment tank, a primary pretreatment wastewater oxidation reaction sedimentation tank, a secondary pretreatment wastewater reaction sedimentation tank, and a sludge tank which are communicated in this order, and the pretreatment wastewater adjustment tank (flow rate is 12m 3 D, carbon steel three-cloth five-oil corrosion prevention, wherein the size is 1.4mX4.0mX4.5m), and a lifting pump, an ultrasonic liquid level meter, an electromagnetic flowmeter and a perforated pipe are arranged in the pretreatment wastewater regulating tank; first-stage pretreatment wastewater oxidation reaction sedimentation tank (flow is 12 m) 3 D, carbon steel three-cloth five-oil corrosion prevention, the size is 3m multiplied by 2m multiplied by 4.5m, and the oxidation reaction tank is 5m 3 The surface load of the sedimentation tank is 0.5m 3 /m 2 H), the first-stage pretreatment wastewater oxidation reaction sedimentation tank is respectively connected with H 2 SO 4 Dosing device, ferrous dosing device and H 2 O 2 The dosing device, the NaOH dosing device, the PAC dosing device, the PAM dosing device and the calcium salt dosing device are communicated; secondary pretreatment wastewater reaction sedimentation tank (flow 12 m) 3 D, carbon steel three-cloth five-oil corrosion prevention, the size is 3m multiplied by 2m multiplied by 4.5m, and the reaction tank is 8m 3 The surface load of the sedimentation tank is 0.55m 3 /m 2 The pH meter, the sludge pump and the stirrer are arranged in the h), and the secondary pretreatment wastewater reaction sedimentation tank is respectively communicated with the NaOH dosing device, the PAM dosing device and the PAC dosing device; a sludge pump and a plate-and-frame filter press are arranged in the sludge tank (the size is 1.7mX3mX4.5 m);
as shown in fig. 5, the integrated wastewater treatment apparatus includes an integrated wastewater adjustment tank and an integrated wastewater reaction sedimentation tank which are sequentially communicated, the integrated wastewater adjustment tank (ruler1.25m×1.4m×4.5 m) is provided with a sludge pump and a plate-and-frame filter press; comprehensive wastewater treatment device (flow is 80m3/d, carbon steel three-cloth five-oil corrosion prevention, size is 2 X 4.5 m), an ultrasonic liquid level meter, an electromagnetic flowmeter and a perforated pipe are arranged in the comprehensive wastewater treatment device; comprehensive wastewater reaction sedimentation tank (size of 2.7mx2mx4.5m, reaction tank 5 m) 3 The surface load of the sedimentation tank is 0.8m 3 /m 2 The pH meter, the sludge pump and the stirrer are arranged in the h), and the comprehensive wastewater reaction sedimentation tank is respectively communicated with the NaOH dosing device, the PAM dosing device and the PAC dosing device;
as shown in fig. 6, the biochemical treatment device comprises a biochemical regulating tank, a hydrolysis tank, a primary anoxic tank, a primary aerobic tank, a secondary anoxic tank, a secondary aerobic tank, a secondary sedimentation tank and a final sedimentation tank which are sequentially communicated; biochemical regulating tank (flow 210 m) 3 D, carbon steel three-cloth five-oil corrosion prevention, wherein the size is 8.2m multiplied by 2.5m multiplied by 4.5m, the residence time is 8.6h, and a lifting pump, an ultrasonic liquid level meter, an electromagnetic flowmeter and a perforated pipe are arranged in the biochemical regulating tank; hydrolysis tank (210 m) 3 D, reinforced concrete is antiseptic, the size is 7.0mX2.5mX5 m, the residence time is 8.9 h), and a stirrer is arranged in the hydrolysis tank; primary anoxic tank (210 m) 3 D, reinforced concrete is anticorrosion, the size is 5m multiplied by 5m, the residence time is 9 h), a carbon source dosing device (5000L of a storage tank, 2 stations of a metering pump, 100L/h,2b ar and 25W) is arranged in the primary anoxic tank; primary aerobic pool (210 m) 3 D, reinforced concrete is anticorrosive, the size is 5m multiplied by 5m, the residence time is 9 h), an aeration device (phi 65mm multiplied by 500 mm) and a nitrifying liquid reflux pump (the flow is 30 m) are arranged in the primary aerobic tank 3 /h, lift 10 m) and blowers (SSR 80,7.5 kW); two-stage anoxic tank (flow 210 m) 3 D, carbon steel three-cloth five-oil corrosion prevention, wherein the size is 3.75mx5mx5m, the residence time is 9 h), a stirrer is arranged in the carbon steel three-cloth five-oil corrosion prevention device, and the secondary anoxic tank is communicated with a carbon source dosing device; two-stage aerobic tank (flow 210 m) 3 D, carbon steel three-cloth five-oil corrosion prevention, wherein the size is 7.7mX7.5mX5.0 m, and the residence time is 18 h), a nitrifying liquid reflux pump is arranged in the carbon steel three-cloth five-oil corrosion prevention device; secondary sedimentation tank (flow 210 m) 3 D, carbon steel three-cloth five-oil corrosion prevention, wherein the size is 5.0mx5.0mx5 m, and the surface load is as follows: 0.4m 3 /㎡h)；
As shown in the figure7, the wastewater recycling device comprises an ultrafiltration device, a primary reverse osmosis device, a secondary reverse osmosis device, a concentrated water reaction sedimentation tank, a sand filtration device and a pH callback tank which are sequentially communicated, and the ultrafiltration system comprises a raw water pump (SUS 304, flow 10 m) 3 2KW, a pump lift of 26m, a power of 9.2 KW), a filter (SS 304, a flow of 10m3/h, a filtering precision of 800 mu m, a filter basket SUS 316L), an ultrafilter (210T/D, a PVDF anti-pollution ultrafiltration membrane), a pipeline (UPVC), a circulating pump (a flow of 265m3/h, a pump lift of 50m, a power of 45KW, SUS 304), a cleaning water tank (3 tons), a cleaning water pump (a flow of 80m3/h, a pump lift of 26m, a power of 9.2KW, SUS 304), a pressure sensor (0-10 bar), a temperature transmitter (0-100 ℃), a rotor flowmeter, a pressure gauge, a liquid level gauge, an electromagnetic flowmeter, an air compressor and a clear water tank; the reverse osmosis device comprises a water inlet pump, a water diversion tank, a water inlet filter, a water inlet high-pressure pump, a two-stage high-pressure pump, a reverse osmosis membrane (SW 30HRLE-400 type anti-pollution membrane), a flushing water pump, a cleaning water tank, a cleaning water pump and a security filter; concentrated water reaction tank (flow 110 m) 3 D, carbon steel three-cloth five-oil corrosion prevention, the size is 4.2m multiplied by 2.5m multiplied by 4.5m, and the reaction tank is 8m 3 The surface load of the sedimentation tank is 0.87m 3 /m 2 H) the device comprises a pH agent, a sludge pump, a stirrer, an ultrasonic liquid level meter and an electromagnetic flowmeter, wherein the concentrated water reaction tank is respectively communicated with a NaOH dosing device, a PAM dosing device, a sodium hypochlorite dosing device and a PAC metering pump, the nickel-containing sludge recovery efficiency of the treatment device can reach 99.8%, and the nickel-containing efficiency is the ratio of the nickel content in the recovered sludge to the nickel content in the wastewater before treatment.
Example 2:
the utility model provides a fretsaw processing effluent disposal system includes exhaust treatment device, exhaust treatment device includes washing portion, the oxidation portion of communicating with washing portion, with the alkaline washing portion of oxidation portion intercommunication and with the biochemical portion of alkaline washing portion intercommunication, biochemical portion includes biochemical jar, set up the deodorization subassembly that is provided with the interval in biochemical jar for 3cm, deodorization subassembly includes hollow carrier layer and the micropore substrate layer laminating with the carrier layer, the preparation method of deodorization subassembly includes:
(1) The mass portion ratio is 10:90, dispersing 5mm alkali-free glass fibers and 0.3mm alkali-free glass fibers in sulfuric acid solution to obtain slurry A, deslagging and diluting the slurry A to the mass concentration of 0.2%, then adding water-absorbing particles for wet forming to obtain wet paper A, adding acrylate emulsion into the wet paper A to obtain a hollow carrier layer, wherein the alkali-free glass fibers A comprise a hollow carrier layer with the thickness of 0.32mm, and the preparation method of the water-retaining particles comprises the following steps: adding 6 parts of polyethylene glycol diacrylate and 4 parts of acrylic acid into deionized water to prepare a solution A, adding 0.1 part of ammonium persulfate and 0.15 part of N, N-methylene bisacrylamide into the solution to prepare a solution B by ultrasonic treatment, transferring the solution B into a mold, and reacting at 70 ℃ for 5 hours under a nitrogen atmosphere to prepare water-retaining particles;
(2) Dispersing 0.3mm alkali-free glass fiber and 4.5mm alkali-free glass fiber with the mass part ratio of 30:70 in sulfuric acid solution to obtain slurry B, wherein the mass concentration of the slurry B is 2.5%, the pH value is 3, pulping to a beating degree of 50 DEG SR, deslagging, diluting to the mass concentration of 0.25%, and performing wet forming to obtain wet paper B, and adding acrylate emulsion into the wet paper B to obtain a microporous substrate layer with the thickness of 0.18mm;
(3) Bonding the water-locking layer prepared in the step (1) on the substrate layer prepared in the step (2), and dehydrating and drying to prepare a deodorizing component, wherein the bonding agent is acrylate emulsion;
(4) Loading microorganism immobilized active carbon particles into a mesoporous carrier layer of a deodorization component, soaking in LB culture solution, and drying in the shade to prepare the deodorization component; the preparation method of the activated carbon immobilized microorganism comprises the following steps: performing amplification culture (LB culture medium) of microorganism deodorizing bacteria (Tianqing source microorganism deodorizing agent) to obtain bacterial liquid, and preparing activated carbon granule (Beijing Dali gold refining factory, analytical grade, density 422.5 kg/m) 3 ) Adding the activated carbon-loaded microorganism into bacterial liquid to prepare activated carbon-loaded microorganism, and drying the activated carbon-loaded microorganism to prepare microorganism immobilized activated carbon particles.
Example 3:
the utility model provides a fretsaw processing effluent disposal system includes exhaust treatment device, exhaust treatment device includes washing portion, the oxidation portion of communicating with washing portion, with the alkaline washing portion of oxidation portion intercommunication and with the biochemical portion of alkaline washing portion intercommunication, biochemical portion includes biochemical jar, sets up at least one deodorization subassembly in biochemical jar, deodorization subassembly includes cavity carrier layer and the micropore substrate layer laminating with the carrier layer, the preparation method of deodorization subassembly includes:
(1) Dispersing alkali-free glass fiber A in sulfuric acid solution to obtain slurry A, deslagging, diluting the slurry A to the mass concentration of 0.25%, adding water-absorbing particles, performing wet forming to obtain wet paper A, adding acrylic ester emulsion into the wet paper A to obtain a hollow carrier layer, wherein the alkali-free glass fiber A comprises the following components in parts by mass: 85.5 mm alkali-free glass fiber and 0.3mm alkali-free glass fiber, wherein the mass concentration of the slurry A is 2.5%, the pH value is 3, the beating degree is 50 DEG SR, the thickness of a water-blocking layer is 0.32mm, and the preparation method of the water-blocking particles comprises the following steps: adding 6 parts of polyethylene glycol diacrylate and 4 parts of acrylic acid into deionized water to prepare a solution A, adding 0.1 part of ammonium persulfate and 0.15 part of N, N-methylene bisacrylamide into the solution to prepare a solution B by ultrasonic treatment, transferring the solution B into a mold, and reacting at 70 ℃ for 5 hours under a nitrogen atmosphere to prepare water-retaining particles;
(2) Dispersing alkali-free glass fiber B in sulfuric acid solution to obtain slurry B, deslagging and diluting the slurry B to the mass concentration of 0.25%, then performing wet forming to obtain wet paper B, adding acrylic ester emulsion into the wet paper B to obtain a microporous substrate layer, wherein the alkali-free glass fiber B comprises 0.3mm alkali-free glass fiber and 4.5mm alkali-free glass fiber in a mass part ratio of 25:65, the mass concentration of the slurry B is 2.5%, the pH value is 3, pulping is performed until the beating degree is 50 DEG SR, and the thickness of the substrate layer is 0.18mm;
(3) Bonding the water-locking layer prepared in the step (1) on the substrate layer prepared in the step (2), and dehydrating and drying to prepare a deodorization carrier; the adhesive is acrylic ester emulsion;
(4) Loading microorganism immobilized active carbon particles into a mesoporous carrier layer of a deodorization component, soaking in LB culture solution, and drying in the shade to prepare the deodorization component; the preparation method of the activated carbon immobilized microorganism comprises the following steps: performing amplification culture (LB culture medium) of microorganism deodorizing bacteria (Tianqing source microorganism deodorizing agent) to obtain bacterial liquid, and preparing activated carbon granule (Beijing Dali gold refining factory, analytical grade, density 422.5 kg/m) 3 ) Adding into bacterial liquid to obtain activated carbon-loaded microorganism, and drying to obtain the final productMicroorganism immobilized activated carbon particles.
Example 4:
the utility model provides a fretsaw processing effluent disposal system includes exhaust treatment device, exhaust treatment device includes washing portion, the oxidation portion of communicating with washing portion, with the alkaline washing portion of oxidation portion intercommunication and with the biochemical portion of alkaline washing portion intercommunication, biochemical portion includes biochemical jar, sets up at least one deodorization subassembly in biochemical jar, deodorization subassembly includes cavity carrier layer and the micropore substrate layer laminating with the carrier layer, the preparation method of deodorization subassembly includes:
(1) Dispersing alkali-free glass fiber A in sulfuric acid solution to obtain slurry A, deslagging, diluting the slurry A to the mass concentration of 0.3%, adding water-absorbing particles, performing wet forming to obtain wet paper A, adding acrylic ester emulsion into the wet paper A to obtain a hollow carrier layer, wherein the alkali-free glass fiber A comprises the following components in parts by mass: 80 of 5mm alkali-free glass fiber and 0.3mm alkali-free glass fiber, wherein the mass concentration of the slurry A is 2.5%, the pH value is 3, the beating degree is 50 DEG SR, the thickness of a water-blocking layer is 0.32mm, and the preparation method of the water-blocking particles comprises the following steps: adding 6 parts of polyethylene glycol diacrylate and 4 parts of acrylic acid into deionized water to prepare a solution A, adding 0.1 part of ammonium persulfate and 0.15 part of N, N-methylene bisacrylamide into the solution to prepare a solution B by ultrasonic treatment, transferring the solution B into a mold, and reacting at 70 ℃ for 5 hours under a nitrogen atmosphere to prepare water-retaining particles;
(2) Dispersing alkali-free glass fiber B in sulfuric acid solution to obtain slurry B, deslagging and diluting the slurry B to the mass concentration of 0.25%, then performing wet forming to obtain wet paper B, adding acrylic ester emulsion into the wet paper B to obtain a microporous substrate layer, wherein the alkali-free glass fiber B comprises 0.3mm alkali-free glass fiber and 4.5mm alkali-free glass fiber in a mass part ratio of 40:60, the mass concentration of the slurry B is 2.5%, the pH value is 3, pulping is performed until the beating degree is 50 DEG SR, and the thickness of the substrate layer is 0.18mm;
(3) Bonding the water-locking layer prepared in the step (1) on the substrate layer prepared in the step (2), and dehydrating and drying to prepare a deodorization carrier; the adhesive is acrylic ester emulsion;
(4) Loading microorganism immobilized active carbon particles into a mesoporous carrier layer of a deodorization component, and then soakingMoistening in LB culture solution, and drying in the shade to obtain deodorizing component; the preparation method of the activated carbon immobilized microorganism comprises the following steps: performing amplification culture (LB culture medium) of microorganism deodorizing bacteria (Tianqing source microorganism deodorizing agent) to obtain bacterial liquid, and preparing activated carbon granule (Beijing Dali gold refining factory, analytical grade, density 422.5 kg/m) 3 ) Adding the activated carbon-loaded microorganism into bacterial liquid to prepare activated carbon-loaded microorganism, and drying the activated carbon-loaded microorganism to prepare microorganism immobilized activated carbon particles.
Comparative example 1:
in comparison with example 2, no water-absorbing particles were added to the deodorizing module, and the other conditions were the same as in example 2.
Comparative example 2:
the deodorization microorganism in the treatment device is liquid fermentation liquor.
Comparative example 3:
in comparison with example 2, the deodorizing device uses a chemical leaching tower and a chimney (20 m).
Test case
The above embodiment is used for treating wire saw processing wastewater, and the efficiency of treating waste gas by the biochemical part and the timeliness of microorganism treatment are respectively detected, and the method for treating waste gas by the biochemical part comprises the following steps: introducing the waste gas with the same volume, and detecting the treatment time required by complete deodorization; the timeliness detection method of the microorganism treatment comprises the following steps: continuously treating the waste gas, and detecting the longest treatment time of the continuous treatment of microorganisms; the odor treatment detection standard evaluation method comprises the following steps: the evaluation is carried out manually, the evaluation grade is 6, and the method comprises the following steps: 0, 1, 2, 3, 4, 5, and (the strong odor causing nausea and headache) are strong. The test results are shown in Table 1, the test results of Table 1
| Treatment efficiency (Tian) | Treatment timeliness (Tian) | Deodorization effect | |
| Example 1 | 2 | 35 | 0 |
| Example 2 | 2 | 34 | 0 |
| Example 3 | 2 | 35 | 0 |
| Example 4 | 2 | 35 | 0 |
| Comparative example 1 | - | - | 2 |
| Comparative example 2 | 5 | 30 | 0 |
| Comparative example 3 | - | - | 2 |
The above experimental structure shows that, compared with example 2, comparative example 1 uses no water-absorbing particles, the microorganism cannot treat the waste gas to be treated in an anhydrous environment, and thus cannot achieve complete deodorization, and comparative example 2 uses conventional liquid fermentation liquid, but the treatment efficiency of liquid fermentation is significantly lower than that of example, since the liquid treatment to gas is greatly affected by the contact area, and the deodorization module is treated by a plurality of microorganism reactors fixed on the carrier, the efficiency of gas treatment is significantly higher than that of liquid treatment, and comparative example 3 uses chemical leaching and chimney high-altitude dilution, but it cannot achieve complete deodorization, and its occupied area is large.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any simple modification, variation and equivalent transformation of the above embodiment according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.
Claims (8)
1. The utility model provides a fretsaw processing effluent disposal system, characterized by includes biochemical treatment plant, with the retrieval and utilization device of biochemical treatment plant intercommunication to and communicate biochemical treatment plant's chemical nickel effluent disposal plant, nickeliferous effluent disposal plant, pretreatment effluent disposal plant and comprehensive wastewater disposal plant respectively, biochemical treatment plant includes two at least biochemical treatment ware, retrieval and utilization device includes two at least reverse osmosis components, biochemical treatment plant, retrieval and utilization device, chemical nickel effluent disposal plant, nickeliferous effluent disposal plant, pretreatment effluent disposal plant and/or comprehensive wastewater disposal plant and exhaust gas treatment plant intercommunication, exhaust gas treatment plant includes washing portion, the oxidation portion of communicating with washing portion, the alkaline wash portion of communicating with oxidation portion and the biochemical portion of communicating with alkaline wash portion.
2. The wire saw processing wastewater treatment system of claim 1, wherein the biochemical section comprises a biochemical tank, at least one deodorizing module disposed within the biochemical tank, the deodorizing module comprising a hollow carrier layer and a microporous substrate layer bonded to the carrier layer.
3. The wire saw processing wastewater treatment system of claim 2, wherein the method of preparing the deodorizing assembly comprises:
(1) Dispersing alkali-free glass fiber A in sulfuric acid solution to prepare slurry A, deslagging, diluting the slurry A to the mass concentration of 0.2-0.3%, adding water-retaining particles, performing wet forming to prepare wet paper A, and adding acrylic ester emulsion into the wet paper A to prepare a hollow carrier layer;
(2) Dispersing alkali-free glass fiber B in sulfuric acid solution to prepare slurry B, deslagging, diluting the slurry B to the mass concentration of 0.2-0.3%, adding water-retaining particles, performing wet forming to prepare wet paper B, and adding acrylic ester emulsion into the wet paper B to prepare a microporous substrate layer;
(3) Bonding the mesoporous carrier layer prepared in the step (1) with the microporous substrate layer prepared in the step (2), and drying and dehydrating to prepare a deodorizing carrier;
(4) And (3) loading microorganism immobilized activated carbon particles into gaps of a mesoporous carrier layer of the deodorization carrier prepared in the step (3) and soaking the gaps in a culture medium to prepare the deodorization component.
4. A wire saw processing wastewater treatment system as defined in claim 3, wherein said water retention particles are prepared by a process comprising: adding 6 parts of polyethylene glycol diacrylate and 4 parts of acrylic acid into deionized water to prepare a solution A, adding an initiator and a cross-linking agent into the solution to prepare a solution B by ultrasonic, transferring the solution B into a die, and reacting at 70 ℃ for 5 hours under a nitrogen atmosphere to prepare the water-retaining particles.
5. The wire saw processing wastewater treatment system of claim 4, wherein the initiating agent is ammonium persulfate.
6. The wire saw processing wastewater treatment system of claim 4, wherein the cross-linking agent is N, N-methylenebisacrylamide.
7. A wire saw processing wastewater treatment system as claimed in claim 3, wherein said step (3) is performed using acrylate emulsion bonding.
8. The wire saw processing wastewater treatment system as defined in claim 3, wherein the step of preparing the microorganism-immobilized activated carbon particles in the step (4) comprises: preparing microbial deodorizing microbial agent into bacterial liquid, and loading the bacterial liquid into active carbon particles to prepare the active carbon immobilized microorganism.
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