CN105693034A - PVC centrifugal mother liquid treating and recycling method and device - Google Patents
PVC centrifugal mother liquid treating and recycling method and device Download PDFInfo
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- C02F9/00—Multistage treatment of water, waste water or sewage
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- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
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- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
- C02F2103/38—Polymers
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- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- C02F3/02—Aerobic processes
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- C02F3/00—Biological treatment of water, waste water, or sewage
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Abstract
The invention belongs to the technical field of PVC production and in particular discloses a PVC centrifugal mother liquid treating and recycling method and also discloses a treating and recycling device. The PVC centrifugal mother liquid treating and recycling method comprises the steps of pretreating PVC centrifugal mother liquid, carrying out biochemical treatment and carrying out sludge treatment, wherein the biochemical treatment comprises the following steps: feeding wastewater obtained after being tempered by virtue of a homogenous adjusting tank to a secondary hydrolysis acidification pool, respectively adding diammonium hydrogen phosphate, urea and an HWO activator into the secondary hydrolysis acidification pool, and removing part of organic matters in the wastewater by carrying out hydrolysis reaction in the secondary hydrolysis acidification pool, so that BOD and COD values of the wastewater are improved, and conversion to readily biodegradable substances from substances difficult to be biodegraded is realized; and enabling the wastewater treated by the secondary hydrolysis acidification pool to overflow into a tertiary biological contact oxidation pool, and carrying out biological contact oxidation process treatment. The treating and recycling method provided by the invention has the advantages that treated effluent realizes 100% reclaimed water reuse, water resources are effectively saved, and environmental pollution is reduced.
Description
Technical field
The present invention relates to PVC production technical field, be specifically related to a kind of PVC centrifugation mother liquor and process recovery method, also relate to process recovery device。
Background technology
The suspension method production polrvinyl chloride that it is suspending agent with water that existing polrvinyl chloride (PVC) project is generally adopted, suspending agent is deviate to be taken as waste water by centrifuge after completion of polymerization and is discharged, i.e. centrifuge mother liquor。Produced centrifugal mother liquor waste water mainly contains PVC (existing with SS form) and the VCM monomer of other residuals, the auxiliary agent of fine granularity, is similar to the softening water containing impurity。PVC centrifugation mother liquor waste water is mainly characterized by: 1. the water yield is big, often produces 1 ton of PVC and about produces centrifugal mother liquor waste water 3-4 ton；2. hardness is low, chlorine root concentration is low；3. turbidity is high, is mainly PVC granule；4. Organic substance difficult degradation therein, belongs to low concentration wastewater from chemical industry。Feature according to PVC centrifugation mother liquor waste water needs to adopt suitable process technique to recycle。
Current PVC centrifugation mother liquor processes the more use activated sludge process of technique, but in Wastewater Treated by Activated Sludge Process process, there is the phenomenon of index fluctuation, mainly PVC is polymerized Batch Process and there is the discharge of polymeric kettle flushing water and sometimes excessively concentrate, exceed the disposal ability of existing sludge treating stations, water after process does not reach qualified discharge, therefore can only reduce polymerization to produce, again this part of contaminated water is processed, qualified discharge again after process, therefore original sewage disposal process by activated sludge process process water is only capable of reaching qualified discharge, and it is complicated to control the controlling unit such as sludge concentration and sludge reflux, can not stable operation, Treated sewage reusing can not be realized, there is also index fluctuation, the problem that impact produces。The problem that problem above particularly can not realize Treated sewage reusing is in the urgent need to address。
Summary of the invention
It is an object of the invention to provide a kind of PVC centrifugation mother liquor and process recovery method, additionally provide a kind of process recovery device simultaneously。Adopt the present invention to process the water outlet after recovery method can make PVC centrifugation mother liquor process and reach the Treated sewage reusing of 100%, it is effectively saved water resource, it is ensured that the carrying out of production, both reduces operating cost, improve Business Economic Benefit, decrease again personnel's injury and environmental pollution。
In order to realize object above, the present invention adopts the following technical scheme that a kind of PVC centrifugation mother liquor processes recovery method, comprises the following steps:
(1) PVC centrifugation mother liquor pretreatment
The PVC granule carried secretly in described PVC centrifugation mother liquor, through precipitating at the beginning of preliminary sedimentation tank, is precipitated by PVC centrifugation mother liquor, and the supernatant of preliminary sedimentation tank send cooling tower to be cooled to 30 DEG C, carries out modified subsequently into homogenizing regulating reservoir；
(2) biochemical treatment
The waste water obtained after homogenizing regulating reservoir is modified delivers to two grades of hydrolysis acidification pools, and it is separately added into DAP, carbamide and HWO activator in two grades of hydrolysis acidification pools, two grades of hydrolysis acidification pools remove the partial organic substances in waste water by hydrolysis, the BOD of waste water and COD value is made to improve, thus realizing by the recalcitrant substance conversion to easily biological-degradable material；Through waste water outflow to the three grades biological contact oxidation pond that two grades of hydrolysis acidification pools process, described three grades of biological contact oxidation ponds carry out biological contact oxidation process process, process the waste water obtained and enter flocculation tank；
(3) Treatment of Sludge
PAM flocculant and PAC flocculant is added in described flocculation tank, after flocculation, precipitation, isolate precipitate and clear liquid, described precipitate gets to sludge concentration tank concentration, the concentrated solution obtained is through the further filter-press dehydration of pressure filter, filter-press dehydration gained filtrate returns to described homogenizing regulating reservoir, and filter cake outward transport processes；Gained clear liquid is delivered to manganese sand filter and is filtered, and filtrate enters clear water reserviors, uses the water in described clear water reserviors during manganese sand filter backwash, and the backwash liquor obtained delivers to described homogenizing regulating reservoir。
Preferably, the consumption of described DAP is: PVC centrifugation mother liquor per ton uses DAP 0.002kg。
Preferably, the consumption of described carbamide is: PVC centrifugation mother liquor per ton uses carbamide 0.00275kg。
Preferably, the consumption of described HWO activator is: PVC centrifugation mother liquor per ton uses HWO activator 0.001kg。
Preferably, the consumption of described PAM flocculant is: PVC centrifugation mother liquor per ton uses PAM flocculant 0.001kg。
Preferably, the consumption of described PAC flocculant is: PVC centrifugation mother liquor per ton uses PAC flocculant 0.0297kg。
A kind of PVC centrifugation mother liquor processes retracting device, including preliminary sedimentation tank, described preliminary sedimentation tank is provided with PVC centrifugation mother liquor input pipe, the outlet of described preliminary sedimentation tank is connected with cooling tower by the first elevator pump, cooling tower is connected with homogenizing regulating reservoir by pipeline, the outlet of described homogenizing regulating reservoir is connected by the second elevator pump and two grades of hydrolysis acidification pools, described two grades of hydrolysis acidification pools are respectively arranged with DAP adding tube, carbamide adding tube and HWO activator adding tube, it is arranged below three grades of biological contact oxidation ponds at described two grades of hydrolysis acidification pools, the outlet of three grades of biological contact oxidation ponds is connected with flocculation tank by pipeline, described flocculation tank is respectively arranged with PAM flocculant adding tube and PAC flocculant adding tube, flocculation tank is connected with flocculation sedimentation tank, described flocculation sedimentation tank has purified liquor outlet and precipitate outlet, the outlet of described precipitate is connected with sludge concentration tank by sludge pump, it is provided with pressure filter after described sludge concentration tank, pump hole it is provided with after described pressure filter, described pump hole connects with described homogenizing regulating reservoir, pressure filter water outlet is back to homogenizing regulating reservoir by described pump hole, described purified liquor outlet is connected with manganese sand filter by the 3rd elevator pump, manganese sand filter is respectively arranged with filtrate (liquid, backwash liquor import and backwash liquor outlet, described filtrate (liquid and described backwash liquor import are all connected with clear water reserviors, the outlet of described backwash liquor is connected with described homogenizing regulating reservoir。
Preferably, described cooling tower adopts DBNL3-125 type, air quantity 67200m3/ h, blower fan diameter 1800mm, power of motor 4.0kw。
Preferably, described two grades of long 10m of hydrolysis acidification pool, wide 6m, two grades of hydrolysis acidification pools are divided into 4 lattice, every lattice to set 2 diving mixers, fill 3 D elastic filler DY150-3500 in two grades of hydrolysis acidification pools, and bed stuffing height is 3m, and total dischargeable capacity is 2100m3。
Preferably, described pressure filter is plate and frame type filter-press, and filter area is 80m2。
The former PVC centrifugation mother liquor of chlor-alkali project is directly discharged into sewage network after waste water treatment plant's biochemical treatment, does not meet energy-saving and emission-reduction requirement。In water resource today that there is a serious shortage in the supply, energy day is becoming tight; by certain process technique; this part water is recycled again; improve the recycling rate of waterused of water; protection and rational utilization of water resources; not only PVC plant is had certain economic benefit, its surrounding enviroment are also had good social benefit。PVC centrifugation mother liquor provided by the invention processes recovery method, biomembrance process is adopted to process technique, application HWO sewage disposal technology, HWO high-effective microorganism and activation of microorganism technology, the disposal ability of microorganism can be increased substantially, have strong adaptability, activity height, strong stress resistance, capacity of decomposition by force, efficiency advantages of higher。Adopt HWO embrane method mother liquid disposal technology, biological contact oxidation process have that the process time is short, volume is little, good purification, effluent quality are good and stablize, mud does not need the advantages such as backflow does not also expand, power consumption is little, water outlet after making PVC centrifugation mother liquor process reaches the Treated sewage reusing of 100%, it is effectively saved water resource, ensure that the carrying out of production, both reduce operating cost, improve Business Economic Benefit, decrease again personnel's injury and environmental pollution。
PVC centrifugation mother liquor provided by the invention processes recovery method, improves the processed in units efficiency of biochemical part；Not returned sludge, reduces operational management difficulty；Adopt the population of HWO high-activity microorganism and the consistent acclimated microorganism of activation of microorganism, persistently maintain the biochemical efficiency of biochemical unit；Add N, P as growth of microorganism necessity nutrition；Increase Treatment of Sludge part and sand filtration unit, control water outlet concentration of suspension。
PVC centrifugation mother liquor provided by the invention processes recovery method and has the advantages that process, floor space are little, stable, it is less to invest, operating cost is relatively low, it is easy to maintenance to operate；The mother liquor waste water produced in PVC production process is processed, is back to circulation after process, is effectively saved water resource, improve Business Economic Benefit, decrease again personnel's injury and environmental pollution。
To produce 300000 tons of polrvinyl chloride projects per year, PVC centrifugation mother liquor provided by the invention is adopted to process recovery method, water backwater in year recoverable 96 ten thousand stere, the charges for disposing pollutants simultaneously having saved nearly 19.2 ten thousand yuan are used, and it is greatly improved the utilization rate of water, it addition, reduce the pollution to environment, it is possible to achieve economic benefit, social benefit doulbe-sides' victory target。
In PVC centrifugation mother liquor before treatment, each index is:
| Project | Limit value |
| Float, mg/L | 150 |
| COD (CODcr), mg/L | 300 |
| Biochemical oxygen demand (BOD5), mg/L | 30 |
After adopting PVC centrifugation mother liquor provided by the invention to process recovery method process, in water outlet, each index is as follows, and the water outlet after making PVC centrifugation mother liquor process reaches the Treated sewage reusing of 100%。
| Project | Limit value |
| Float, mg/L | 10 |
| COD (CODcr), mg/L | 50 |
| Biochemical oxygen demand (BOD5), mg/L | 10 |
Accompanying drawing explanation
Fig. 1 is the structural representation that a kind of PVC centrifugation mother liquor provided by the invention processes retracting device embodiment。
Detailed description of the invention
Below by specific embodiment, technical scheme is described in detail。
Embodiment 1
A kind of PVC centrifugation mother liquor processes recovery method, adopts biomembrance process to process technique, application HWO high-effective microorganism and activation of microorganism technology, comprises the following steps:
(1) PVC centrifugation mother liquor pretreatment unit
Carry out the PVC centrifugation mother liquor of auto polymerization through precipitating at the beginning of preliminary sedimentation tank, the PVC granule major part carried secretly in PVC centrifugation mother liquor is precipitated, the supernatant of preliminary sedimentation tank is delivered to cooling tower by elevator pump, the supernatant of 60 DEG C is cooled to 30 DEG C by cooling tower, subsequently into homogenizing regulating reservoir, in homogenizing regulating reservoir waste water kept in, modified, provide system homogeneous waste water for next procedure；
(2) biochemical treatment unit
The homogeneous waste water of the system that obtains after homogenizing regulating reservoir is modified is delivered to two grades of hydrolysis acidification pools by elevator pump, and it is separately added into DAP, carbamide and HWO activator in two grades of hydrolysis acidification pools, wherein the consumption of DAP is: PVC centrifugation mother liquor per ton uses DAP 0.002kg, the consumption of carbamide is: PVC centrifugation mother liquor per ton uses carbamide 0.00275kg, the consumption of HWO activator is: PVC centrifugation mother liquor per ton uses HWO activator 0.001kg, and DAP, carbamide and HWO activator obtain each through market purchasing；Waste water removes partial organic substances at two grades of hydrolysis acidification pools by hydrolysis, and acidifying that the Organic substance of part indissoluble is hydrolyzed, improve the ratio of dissolved organic matter, the BOD and the COD value that make waste water improve, thus realizing by the recalcitrant substance conversion to easily biological-degradable material, when useless Organic substance in water is labyrinth, hydrolysis acidification bacterium utilizes H2The H of O ionization+Being opened by C-C in organic molecule with-OH, one end adds H+, one end addition-OH, it is possible to long-chain is hydrolyzed to short chain, side chain becomes straight chain, ring junction constitutes straight or branched, improves the biodegradability of sewage。In water during SS height, bacterium is caught by ectoplasm in hydrolysis, is hydrolyzed into molecule part with exoenzyme and enters back into born of the same parents' intracellular metabolite, and incomplete metabolism can make SS become dissolved organic matter, and it is limpid that water outlet just becomes。This is hydrolyzed bacterium therebetween is the activity form that in the Organic substance that make use of and be hydrolyzed scission of link, covalent bond energy completes life。Due to the deficiency of N, P element in raw wastewater, it is therefore desirable to supplement N, P element in two grades of hydrolysis acidification pools, therefore to add DAP, carbamide and HWO activator in two grades of hydrolysis acidification pools。Through waste water outflow to the three grades biological contact oxidation pond that two grades of hydrolysis acidification pools process, three grades of biological contact oxidation ponds carry out biological contact oxidation process process, biological contact oxidation process is a kind of wastewater biochemical facture having activated sludge process and biomembrance process feature concurrently, filler is submerged by water, with aerator aeration aerating bottom filler, activated sludge is attached to filling surface, do not flow with water, because biomembrane is directly subjected to the strong agitation of ascending air, constantly update, thus improve clean-up effect, processing the waste water obtained and entering flocculation tank；
(3) sludge treating block
PAM flocculant and PAC flocculant is added in flocculation tank, PAM flocculant and PAC flocculant are obtained by market purchasing, the consumption of PAM flocculant is: PVC centrifugation mother liquor per ton uses PAM flocculant 0.001kg, the consumption of PAC flocculant is: PVC centrifugation mother liquor per ton uses PAC flocculant 0.0297kg, at flocculant PAM, under PAC effect, the auxiliary agent in waste water is made to flocculate into precipitate, after precipitating then through flocculation sedimentation tank afterwards, isolate precipitate and clear liquid, precipitate is got to sludge concentration tank by sludge pump and is concentrated further, the concentrated solution obtained is through the further filter-press dehydration of pressure filter, filter-press dehydration gained filtrate returns to homogenizing regulating reservoir, filter cake outward transport processes；Gained clear liquid is delivered to manganese sand filter by elevator pump and is filtered, and filtrate enters clear water reserviors, and manganese sand filter needs regular backwash, uses the water in clear water reserviors during backwash, and the backwash liquor obtained delivers to homogenizing regulating reservoir。The water entering clear water reserviors reaches the requirement of circulating cooling make-up water。
The PVC centrifugation mother liquor process recovery method of the present embodiment offer, is the optimum selection of the various problems occurred in solution industrial wastewater biological treatment, is also the Chi Rong great of the biochemical treatment needs that the newly-built sewage plant of solution runs into simultaneously, takes up an area the good method that many costs are high。
Embodiment 2
A kind of PVC centrifugation mother liquor that the present embodiment provides processes retracting device, as shown in Figure 1, including preliminary sedimentation tank 1, preliminary sedimentation tank 1 is provided with PVC centrifugation mother liquor input pipe 2, the outlet of preliminary sedimentation tank 1 is connected with cooling tower 4 by the first elevator pump 3, cooling tower 4 is connected with homogenizing regulating reservoir 5 by pipeline, the outlet of homogenizing regulating reservoir 5 is connected with two grades of hydrolysis acidification pools 7 by the second elevator pump 6, two grades of hydrolysis acidification pools 7 are respectively arranged with DAP adding tube 8, carbamide adding tube 9 and HWO activator adding tube 10, it is arranged below three grades of biological contact oxidation ponds 11 at two grades of hydrolysis acidification pools 7, the outlet of three grades of biological contact oxidation ponds 11 is connected with flocculation tank 12 by pipeline, flocculation tank 12 is respectively arranged with PAM flocculant adding tube 13 and PAC flocculant adding tube 14, flocculation tank 12 is connected with flocculation sedimentation tank 15, flocculation sedimentation tank 15 has purified liquor outlet and precipitate outlet, precipitate outlet is connected with sludge concentration tank 17 by sludge pump 16, it is provided with pressure filter 18 after sludge concentration tank 17, pump hole 19 it is provided with after pressure filter 18, pump hole 19 connects with homogenizing regulating reservoir 5, pressure filter 18 water outlet is back to homogenizing regulating reservoir 5 by pump hole 19, purified liquor outlet is connected with manganese sand filter 21 by the 3rd elevator pump 20, manganese sand filter 21 is respectively arranged with filtrate (liquid, backwash liquor import and backwash liquor outlet, filtrate (liquid and backwash liquor import are all connected with clear water reserviors 22, backwash liquor outlet is connected with homogenizing regulating reservoir 5。
Preliminary sedimentation tank 1 and homogenizing regulating reservoir 5 constitute PVC centrifugation mother liquor pretreatment unit 23；Two grades of hydrolysis acidification pools 7 and three grades of biological contact oxidation ponds 11 constitute biochemical treatment unit 24；Sludge concentration tank 17 and pressure filter 18 constitute sludge treating block 25。
Homogenizing regulating reservoir 5 is set and can make aftertreatment device normal operation, not by the impact of waste water peak flow or concentration change。
By arranging the sand filtration unit of sludge treating block 25 and manganese sand filter 21, effectively control the concentration of suspension of water outlet。
Wherein, cooling tower 4 adopts DBNL3-125 type, air quantity 67200m3/ h, blower fan diameter 1800mm, power of motor 4.0kw。
Two grades of long 10m of hydrolysis acidification pool 7, wide 6m, two grades of hydrolysis acidification pools are divided into 4 lattice, every lattice to set 2 diving mixers, set 8 altogether, fill 3 D elastic filler DY150-3500 in two grades of hydrolysis acidification pools, and bed stuffing height is 3m, and total dischargeable capacity is 2100m3。
Total dischargeable capacity of three grades of biological contact oxidation ponds 11 is 1500m3。
Pressure filter 18 is plate and frame type filter-press, and filter area is 80m2。
Claims (10)
1. a PVC centrifugation mother liquor processes recovery method, it is characterised in that comprise the following steps:
(1) PVC centrifugation mother liquor pretreatment
The PVC granule carried secretly in described PVC centrifugation mother liquor, through precipitating at the beginning of preliminary sedimentation tank, is precipitated by PVC centrifugation mother liquor, and the supernatant of preliminary sedimentation tank send cooling tower to be cooled to 30 DEG C, carries out modified subsequently into homogenizing regulating reservoir；
(2) biochemical treatment
The waste water obtained after homogenizing regulating reservoir is modified delivers to two grades of hydrolysis acidification pools, and it is separately added into DAP, carbamide and HWO activator in two grades of hydrolysis acidification pools, two grades of hydrolysis acidification pools remove the partial organic substances in waste water by hydrolysis, the BOD of waste water and COD value is made to improve, thus realizing by the recalcitrant substance conversion to easily biological-degradable material；Through waste water outflow to the three grades biological contact oxidation pond that two grades of hydrolysis acidification pools process, described three grades of biological contact oxidation ponds carry out biological contact oxidation process process, process the waste water obtained and enter flocculation tank；
(3) Treatment of Sludge
PAM flocculant and PAC flocculant is added in described flocculation tank, after flocculation, precipitation, isolate precipitate and clear liquid, described precipitate gets to sludge concentration tank concentration, the concentrated solution obtained is through the further filter-press dehydration of pressure filter, filter-press dehydration gained filtrate returns to described homogenizing regulating reservoir, and filter cake outward transport processes；Gained clear liquid is delivered to manganese sand filter and is filtered, and filtrate enters clear water reserviors, uses the water in described clear water reserviors during manganese sand filter backwash, and the backwash liquor obtained delivers to described homogenizing regulating reservoir。
2. PVC centrifugation mother liquor according to claim 1 processes recovery method, it is characterised in that the consumption of described DAP is: PVC centrifugation mother liquor per ton uses DAP 0.002kg。
3. PVC centrifugation mother liquor according to claim 2 processes recovery method, it is characterised in that the consumption of described carbamide is: PVC centrifugation mother liquor per ton uses carbamide 0.00275kg。
4. PVC centrifugation mother liquor according to claim 3 processes recovery method, it is characterised in that the consumption of described HWO activator is: PVC centrifugation mother liquor per ton uses HWO activator 0.001kg。
5. PVC centrifugation mother liquor according to claim 4 processes recovery method, it is characterised in that the consumption of described PAM flocculant is: PVC centrifugation mother liquor per ton uses PAM flocculant 0.001kg。
6. PVC centrifugation mother liquor according to claim 5 processes recovery method, it is characterised in that the consumption of described PAC flocculant is: PVC centrifugation mother liquor per ton uses PAC flocculant 0.0297kg。
7. a PVC centrifugation mother liquor processes retracting device, it is characterized in that, including preliminary sedimentation tank, described preliminary sedimentation tank is provided with PVC centrifugation mother liquor input pipe, the outlet of described preliminary sedimentation tank is connected with cooling tower by the first elevator pump, cooling tower is connected with homogenizing regulating reservoir by pipeline, the outlet of described homogenizing regulating reservoir is connected by the second elevator pump and two grades of hydrolysis acidification pools, described two grades of hydrolysis acidification pools are respectively arranged with DAP adding tube, carbamide adding tube and HWO activator adding tube, it is arranged below three grades of biological contact oxidation ponds at described two grades of hydrolysis acidification pools, the outlet of three grades of biological contact oxidation ponds is connected with flocculation tank by pipeline, described flocculation tank is respectively arranged with PAM flocculant adding tube and PAC flocculant adding tube, flocculation tank is connected with flocculation sedimentation tank, described flocculation sedimentation tank has purified liquor outlet and precipitate outlet, the outlet of described precipitate is connected with sludge concentration tank by sludge pump, it is provided with pressure filter after described sludge concentration tank, pump hole it is provided with after described pressure filter, described pump hole connects with described homogenizing regulating reservoir, pressure filter water outlet is back to homogenizing regulating reservoir by described pump hole, described purified liquor outlet is connected with manganese sand filter by the 3rd elevator pump, manganese sand filter is respectively arranged with filtrate (liquid, backwash liquor import and backwash liquor outlet, described filtrate (liquid and described backwash liquor import are all connected with clear water reserviors, the outlet of described backwash liquor is connected with described homogenizing regulating reservoir。
8. PVC centrifugation mother liquor according to claim 7 processes retracting device, it is characterised in that described cooling tower adopts DBNL3-125 type, air quantity 67200m3/ h, blower fan diameter 1800mm, power of motor 4.0kw。
9. PVC centrifugation mother liquor according to claim 8 processes retracting device, it is characterized in that, described two grades of long 10m of hydrolysis acidification pool, wide 6m, two grades of hydrolysis acidification pools are divided into 4 lattice, every lattice set 2 diving mixers, filling 3 D elastic filler DY150-3500 in two grades of hydrolysis acidification pools, bed stuffing height is 3m, and total dischargeable capacity is 2100m3。
10. PVC centrifugation mother liquor according to claim 9 processes retracting device, it is characterised in that described pressure filter is plate and frame type filter-press, and filter area is 80m2。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610214736.8A CN105693034A (en) | 2016-04-06 | 2016-04-06 | PVC centrifugal mother liquid treating and recycling method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610214736.8A CN105693034A (en) | 2016-04-06 | 2016-04-06 | PVC centrifugal mother liquid treating and recycling method and device |
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| CN201610214736.8A Pending CN105693034A (en) | 2016-04-06 | 2016-04-06 | PVC centrifugal mother liquid treating and recycling method and device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106565061A (en) * | 2016-11-14 | 2017-04-19 | 深圳市玖品空气净化科技有限公司 | Oil producing wastewater treatment system for oil exploration |
| CN107326197A (en) * | 2017-08-17 | 2017-11-07 | 长兴上拓环境科技有限公司 | A kind of germanic strip liquor alkali recovery process of zinc abstraction |
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| CN101333051A (en) * | 2007-11-16 | 2008-12-31 | 北京中科国益环保工程有限公司 | Process for treating and recovering polyvinyl chloride centrifugation mother liquid by suspension method |
| CN103342442A (en) * | 2013-07-18 | 2013-10-09 | 山东太平洋环保有限公司 | Integrated biotreatment system and method for PVC (poly vinyl chloride) industrial wastewater |
| CN204211602U (en) * | 2014-10-09 | 2015-03-18 | 青海宜化化工有限责任公司 | A kind of PVC centrifugation mother liquor treatment station |
| CN205556403U (en) * | 2016-04-06 | 2016-09-07 | 内蒙古宜化化工有限公司 | Recovery unit is handled to PVC centrifugation mother liquor |
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| CN101333051A (en) * | 2007-11-16 | 2008-12-31 | 北京中科国益环保工程有限公司 | Process for treating and recovering polyvinyl chloride centrifugation mother liquid by suspension method |
| CN103342442A (en) * | 2013-07-18 | 2013-10-09 | 山东太平洋环保有限公司 | Integrated biotreatment system and method for PVC (poly vinyl chloride) industrial wastewater |
| CN204211602U (en) * | 2014-10-09 | 2015-03-18 | 青海宜化化工有限责任公司 | A kind of PVC centrifugation mother liquor treatment station |
| CN205556403U (en) * | 2016-04-06 | 2016-09-07 | 内蒙古宜化化工有限公司 | Recovery unit is handled to PVC centrifugation mother liquor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106565061A (en) * | 2016-11-14 | 2017-04-19 | 深圳市玖品空气净化科技有限公司 | Oil producing wastewater treatment system for oil exploration |
| CN106565061B (en) * | 2016-11-14 | 2019-05-07 | 旭日环保集团股份有限公司 | A kind of oil extraction waste water processing system for oil exploration |
| CN107326197A (en) * | 2017-08-17 | 2017-11-07 | 长兴上拓环境科技有限公司 | A kind of germanic strip liquor alkali recovery process of zinc abstraction |
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Application publication date: 20160622 |