CN109205943A - A kind of processing method of pharmacy waste water - Google Patents

A kind of processing method of pharmacy waste water Download PDF

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Publication number
CN109205943A
CN109205943A CN201811183573.7A CN201811183573A CN109205943A CN 109205943 A CN109205943 A CN 109205943A CN 201811183573 A CN201811183573 A CN 201811183573A CN 109205943 A CN109205943 A CN 109205943A
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China
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water
counter
level
dtl
infiltration system
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CN201811183573.7A
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Inventor
齐奇
饶斌
罗征
张立娜
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BEIJING TDR ENVIRON-TECH Co Ltd
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BEIJING TDR ENVIRON-TECH Co Ltd
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Priority to CN201811183573.7A priority Critical patent/CN109205943A/en
Publication of CN109205943A publication Critical patent/CN109205943A/en
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/70—Treatment of water, waste water, or sewage by reduction
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/02—Non-contaminated water, e.g. for industrial water supply
    • C02F2103/026—Treating water for medical or cosmetic purposes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124—Water desalination
    • Y02A20/131—Reverse-osmosis

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

The present invention provides a kind of processing methods of pharmacy waste water, for realizing Treated sewage reusing.Its basic step includes: that pharmacy waste water enters V-type filter tank except SS, the water outlet of V-type filter tank enters the desalination and concentration decrement that level-one DTL counter-infiltration system carries out the first step, the concentrated water of level-one DTL counter-infiltration system is after chemical tendering removes firmly, the concentration decrement of second step is carried out, into second level DTL counter-infiltration system to meet the requirement of the system rate of recovery.After the production water of firsts and seconds DTL counter-infiltration system is collected, secondary desalination is carried out into three-level rolling counter-infiltration system, to meet the water quality requirement of system recycle-water.The index of recycle-water close to drinking water, can with economical and efficient Pharmaceutical Wastewater Treatment, there is significant economic benefit and social benefit.

Description

A kind of processing method of pharmacy waste water
Technical field
The present invention relates to technical field of waste water processing, and in particular to a kind of pair of pharmacy waste water is handled, thus in realizing The method of water reuse.
Background technique
Treated sewage reusing, that is, advanced treatment of wastewater, this method are different from tertiary sewage treatment.Difference is: tertiary treatment be Treatment facility is further added by obtain good water quality after two stage treatment process, reaches discharge standard.And advanced treating Final purpose is to realize the reuse of sewage.
Currently used sewerage advanced treatment process specifically includes that (1) using secondary effluent from sewage treatment plant as raw water, then passes through The deep purifying processing based on physico-chemical process is crossed, most common advanced treatment process is coagulation+precipitating+filtering.(2) living Property carbon adsorption: this method is a kind of technology with broad prospect of application, but the capital expenditure of technique, operating cost and activity Charcoal regeneration cost is research emphasis from now on.(3) Ozonation: ozone has extremely strong oxidisability, can effectively improve water quality. But operating cost is higher, promotes still difficult.(4) embrane method: membrane separation technique is a kind of novel high efficient separation technology, micro-filtration energy Enough separate all suspended particulates, ultrafiltration can be effectively removed particulate matter and macromolecular substances in sewage, can remove completely in water Bacterium and Escherichia coli, effectively remove the suspended matter (SS) in water, nanofiltration and reverse osmosis then to dissolubility small molecule in water Substance is more effective, can go water removal in salinity, bod (Biochemical Oxygen Demand, abbreviation BOD), Chemical oxygen consumption (COC) (uses potassium bichromate K2Cr2O7As the chemical oxygen consumption (COC) that oxidant determines, abbreviation CODcr), total nitrogen and total Excellent quality of reused water is stablized in the pollutant concentrations such as phosphorus, acquisition.
Determine that sewerage advanced treatment process is the key that sewage treatment project design.Whether treatment process is proper not only to influence Treatment effect, the effluent quality of sewage treatment project, and have an effect on the capital expenditure size of engineering, whether operation is reliable, transports The various aspects such as the height of row expense, the complexity of management operation, occupied area size, engineering staff's index be how many.It is biochemical Pharmacy waste water has the main features such as content of microorganisms is high, COD is higher, suspension content is high, hardness is high and salt content is higher.Cause This, it is necessary to comprehensive actual conditions cautiously select treatment process, to reach optimum efficiency.
In consideration of it, the present invention is specifically proposed.
Summary of the invention
The purpose of the present invention is to provide a kind of processing methods of pharmacy waste water.
To achieve the above object, technical scheme is as follows:
The present invention relates to a kind of processing methods of pharmacy waste water, comprising the following steps:
(1) biochemical treatment and sterilization processing are successively carried out to pharmacy waste water, then waste water introduces V-type filter tank by treated It is filtered, removes the suspended matter in waste water；
Preferably, the sterilization processing is that NaClO is added into the waste water after the biochemical treatment.
(2) V-type filter tank is produced into water and introduces filter tank production pond, carried out sedimentation in the production pond of the filter tank and pH value is adjusted； The water outlet that filter tank produces pond enters level-one DTL counter-infiltration system and carries out level-one desalination and concentration；Level-one DTL counter-infiltration system goes out Water includes concentrated water and production water；
Preferably, the filter tank produces turbidity≤10NTU of water body in pond.
Preferably, it is produced in pond to the filter tank and sequentially adds NaHSO3And H2SO4, the pH value of the waste water is adjusted to Then the water outlet that filter tank produces pond is introduced level-one DTL counter-infiltration system by 6.0-7.0.
(3) concentrated water of level-one DTL counter-infiltration system is introduced into highly dense cell system and carries out sofening treatment；Level-one DTL is reverse osmosis The production water of system introduces intermediate pool；
Preferably, the sofening treatment uses liquid alkaline method, and the reagent of use includes liquid alkaline, PAC and PAM.
Preferably, highly dense pond produces water turbidity≤10NTU, total hardness≤100mg/L.
(4) highly dense pond is produced water introducing sand filter to be filtered, enters sand filtration production pond after removing suspended matter, in the sand Filter, which produces, carries out sedimentation and pH value adjusting in pond；It is dense that the water outlet that sand filtration produces pond enters second level DTL counter-infiltration system progress second level Reduction, the water outlet of second level DTL counter-infiltration system include concentrated water and production water；
Preferably, sand filtration produces turbidity of wastewater≤10NTU in pond.
Preferably, it is produced in pond to the sand filtration and H is added2SO4, the pH value of the waste water is adjusted to 6.0-7.0, then will The water outlet that sand filtration produces pond introduces second level DTL counter-infiltration system.
Preferably, second level DTL counter-infiltration system concentrated water enter divide salt collecting-tank, travel further into the highly dense system of point salt into Row sofening treatment；The production water of second level DTL counter-infiltration system is introduced into intermediate pool, it is mixed with the production water of level-one DTL counter-infiltration system It closes.
(5) the production water of firsts and seconds DTL counter-infiltration system is mixed, is sent into three-level rolling counter-infiltration system and carries out desalination Processing, obtains recycle-water.
Preferably, the μ of the conductivity of the recycle-water≤100 S/cm, COD≤30mg/L, it is up to standard after recycle-water can send outside To with carrying out reuse between waterwheel.
Preferably, firsts and seconds DTL counter-infiltration system uses DTL reverse osmosis equipment, and three-level rolling counter-infiltration system is adopted With common rolling RO equipment.
Preferably, level-one DTL counter-infiltration system uses bitter film, and operation maximum pressure is 75bar；Second level DTL reverse osmosis Permeable system uses seawater film, and operation maximum pressure is 90bar；Three-level rolling counter-infiltration system uses bitter film, and operation is maximum Pressure is 16bar.
Beneficial effects of the present invention:
The present invention provides a kind of processing methods of pharmacy waste water, for realizing Treated sewage reusing.Its basic step includes: system Medicine waste water enters V-type filter tank except SS, and the water outlet of V-type filter tank enters desalination and the concentration that level-one DTL counter-infiltration system carries out the first step Decrement, level-one DTL reverse osmosis concentrated water carry out second step after chemical tendering removes firmly, into second level DTL counter-infiltration system Concentration decrement, to meet the requirement of the system rate of recovery.After the production water of firsts and seconds DTL counter-infiltration system is collected, into three Grade rolling counter-infiltration system carries out secondary desalination, to meet the water quality requirement of system recycle-water.
Detailed description of the invention
Fig. 1 is the process flow chart of the pharmacy wastewater treatment method.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, technical solution of the present invention will be carried out below Detailed description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base Embodiment in the present invention, those of ordinary skill in the art are obtained all without making creative work Other embodiment belongs to the range that the present invention is protected.
The present invention relates to a kind of processing methods of pharmacy waste water, comprising the following steps:
(1) biochemical treatment and sterilization processing are successively carried out to pharmacy waste water, then waste water introduces V-type filter tank by treated It is filtered, removes the suspended matter in waste water.
Wherein, biochemical treatment is the metabolism using microorganism, makes organic dirt in waste water in dissolution and colloidal state Dye object is converted into innocuous substance, the method to realize purification.Aerobe facture and Anaerobic biotreatment method can be divided into.
In one embodiment of the invention, sterilization processing is that NaClO is added into the waste water after biochemical treatment, makes waste water In the miscellaneous bacterias such as mould, bacterium and actinomyces content be reduced to it is micro.
V-type filter tank uses constant water level filtering, and ultrasonic level gage automatically controls adjustable solution and is discharged purge valve in pond, and valve can Opening degree is automatically adjusted according to the height of pool inner water position, to guarantee the constant level in pond.Using homogeneous filtering material, filter area Greatly, mixing wastewater with air backwashes.Its high degree of automation, control system are mature.
(2) V-type filter tank is produced into water and introduces filter tank production pond, carried out sedimentation in the production pond of filter tank and pH value is adjusted；Filter tank The water outlet for producing pond enters level-one DTL counter-infiltration system and carries out level-one desalination and concentration；The water outlet packet of level-one DTL counter-infiltration system It includes concentrated water and produces water.
In one embodiment of the invention, filter tank produces turbidity≤10NTU of water body in pond.
In one embodiment of the invention, it is produced in pond to filter tank and NaHSO is added3, with excessive in reductive water NaClO reduces the oxidisability of waste water, shown in the chemical equation such as formula (1) of the two reaction:
2NaHSO3+ 2NaClO=Na2SO4+2NaCl+2H2O (1)
Since the pH value of biochemical water is in 8.0-9.0 or so, is next produced in pond to filter tank and H is added2SO4, will wherein give up The pH value of water is adjusted to 6.0-7.0, then introduces level-one DTL counter-infiltration system.The water outlet of level-one DTL counter-infiltration system is divided into two Point, permeate (referred to as production water) is discharged into intermediate pool, and concentrate (referred to as concentrated water) is discharged into highly dense cell system and carries out in next step Processing.
(3) concentrated water of level-one DTL counter-infiltration system is introduced into highly dense cell system and carries out sofening treatment；Level-one DTL is reverse osmosis The production water of system introduces intermediate pool.
Highly dense cell system full name potassium permanganate composites system is after horizontal sedimentation tank, and inclined plate (pipe) sedimentation basin and machinery add A kind of New clarifier after fast (pulse) clarifying basin, by dosing, coagulation, flocculation, precipitating and sludge condensation function set in One.It is divided into mixed zone, flocculation zone, settling zone and pH regulation area.Quick mixer is set in mixed zone, makes the coagulation added Agent and liquid alkaline rapid dispersion make slightly solubility substance flocculate to form the flocculent deposit of macromolecular, realize mud-water separation.Water outlet is through pH value Enter next stage processing unit after adjusting.
In one embodiment of the invention, sofening treatment uses liquid alkaline method, i.e., is gone using liquid alkaline remaining temporary in water removal When hardness and part magnesium hardness.Reagent includes liquid alkaline, PAC and PAM.
Wherein, liquid alkaline is the sodium hydroxide of liquid state.For existing chlor-alkali plant due to the difference of production technology, the concentration of liquid alkaline is logical Often it is 30%-32% or 40%-42%, the pH of waste water in highly dense cell system is adjusted to 11.0 or so using liquid alkaline.
PAM is polyacrylamide, and PAC is aluminium polychloride.Both it can make sewage or dirt by itself or hydrolysate Colloid in mud quickly forms precipitating.The present invention makes the settling of floccus in water by adding PAC and PAM.Finally produce highly dense pond Water turbidity≤10NTU, total hardness≤100mg/L.
(4) highly dense pond is produced water introducing sand filter to be filtered, enters sand filtration production pond after removing suspended matter, is produced in sand filtration Sedimentation is carried out in pond and pH value is adjusted；The water outlet that sand filtration produces pond enters second level DTL counter-infiltration system progress secondary concentration and subtracts Amount, the water outlet of second level DTL counter-infiltration system include concentrated water and production water.
Sand filter entitled shallow media filter (Shallow medium filter) entirely is a kind of to utilize filter medium Go water removal in various suspended matters, microorganism and other subparticles, be finally reached reduce water turbidity, purify water effect A kind of High-cfficiency Filtration equipment.Common filtrate has quartz sand, activated carbon, anthracite, manganese sand etc..It is handled in the present invention using sand filter The water outlet in highly dense pond reduces the suspended matter in water, to meet the subsequent water inlet requirement into second level DTL counter-infiltration system, reduces The blocking of core filter.
In one embodiment of the invention, handled by sand filter, into sand filtration produce pond in turbidity of wastewater≤ 10NTU。
After waste water enters sand filtration production pond, is produced in pond to sand filtration and H is added2SO4, the pH value of waste water is adjusted to 6.0-7.0, Then the water outlet that sand filtration produces pond is introduced into second level DTL counter-infiltration system.Similar with level-one DTL counter-infiltration system, second level DTL is anti- The water outlet of osmosis system is also classified into permeate (referred to as production water) and concentrate (referred to as concentrated water) two parts.
In one embodiment of the invention, second level DTL counter-infiltration system concentrated water enter divide salt collecting-tank, further into Enter to divide the highly dense system of salt to carry out sofening treatment；The production water of second level DTL counter-infiltration system is introduced into intermediate pool, it is anti-with level-one DTL The production water of osmosis system mixes.
(5) the production water of firsts and seconds DTL counter-infiltration system is mixed, is sent into three-level rolling counter-infiltration system and carries out desalination Processing, obtains recycle-water.
In one embodiment of the invention, the conductivity of recycle-water≤100 μ S/cm, COD≤30mg/L, other indexs Meet drinking water standard.Recycle-water after up to standard can be sent outside to carrying out reuse between waterwheel.
In one embodiment of the invention, firsts and seconds DTL counter-infiltration system includes process concision and compact, equipment Complexes standardization；Technology stability is strong, maintenance is simple, low energy consumption；Effluent quality is good；The advantage of flexible operation.Due to according to The secondary production water handled by level-one DTL counter-infiltration system and second level DTL counter-infiltration system is unable to satisfy the requirement of recycle-water, therefore It also needs to select common coiled reverse osmosis membrane to water progress desalination is produced.Therefore three-level counter-infiltration system is general in the present invention Logical rolling RO system.
Specifically, level-one DTL counter-infiltration system uses bitter film, and operation maximum pressure is 75bar；Second level DTL reverse osmosis Permeable system uses seawater film, and operation maximum pressure is 90bar；Three-level rolling counter-infiltration system uses bitter film, and operation is maximum Pressure is 16bar.
Embodiment
By taking certain company's Treated sewage reusing construction-operation-transfer (BOT) project as an example, the day yield of the said firm's pharmacy waste water For 12000m3/d.Do not use present invention process technology before, by the said firm sewage disposal system directly to pharmacy waste water into Row processing, obtained former bio-chemical effluent are directly entered mechanical steam recompression system (abbreviation MVR) and are evaporated crystallization.Due to COD in waste water is higher, suspension content is high, hardness is high, so that MVR needs frequent clean, MVR whole system is caused to handle energy The 80% of designed capacity is not achieved in power, and energy consumption is high.
After present invention process, by treated, recycle-water is back to use the production phase, is used as process water or recirculated water Water is supplemented, the production pressure in the workshop MVR is significantly reduced, reduces its evaporation energy consumption, improve full factory's sewerage disposing ability.
As shown in Figure 1, pharmacy wastewater treatment method provided by the invention the following steps are included:
(1) after carrying out biochemical treatment to pharmacy waste water, NaClO is added and carries out sterilization processing, obtains biochemical water.Biochemistry comes Water is introduced into collecting-tank, squeezes into V-type filter tank by elevator pump and is filtered, removes the suspended matter in water.V-type filter tank is due to filter The bed of material is thicker, and dirt-carrying amount is big, and the delivery turbidity of water after filter is generally less than 10.0NTU.V-type filter tank needs periodically to carry out air water anti- It washes, backwash water drains into biochemical system.
(2) V-type filter tank produced into water introduce filter tank and produce pond, produce in pond and settled in filter tank, make the turbidity of water body≤ 10NTU.Then NaHSO is added3And H2SO4, the pH value of waste water is adjusted to 6.0-7.0.The water outlet that filter tank produces pond enters level-one DTL counter-infiltration system carries out level-one desalination and concentration.Level-one DTL counter-infiltration system uses bitter film, and operation maximum pressure is The rate of recovery of level-one DTL counter-infiltration system is designed as 80% by 75bar.The water outlet of level-one DTL counter-infiltration system is divided into two Point, permeate (referred to as production water) is discharged into intermediate pool, and concentrate (referred to as concentrated water) is discharged into highly dense cell system and carries out in next step Processing.
In certain operating condition, the influent COD of level-one DTL counter-infiltration system is 626mg/L, and production water COD is 23mg/L, removal rate 97%.
(3) since after the processing of level-one DTL counter-infiltration system, the salt content in concentrated water is 4-5 times of biochemical water, Therefore the scale-forming ion concentration in concentrated water is very high.Need to introduce the concentrated water of level-one DTL counter-infiltration system highly dense cell system into Row sofening treatment, subsequently into the processing of second level DTL counter-infiltration system.The production water of level-one DTL counter-infiltration system introduces intermediate pool.
Sofening treatment carries out in highly dense cell system, using liquid alkaline method.Softening be added medicament be mainly liquid alkaline, PAC and PAM, softening water outlet enter softening and produce pond.Softening sludge removes sludge-tank, and the mud cake and biochemistry generated by sludge dewatering system is dirty Mud is disposed together, and filter press filtrate again returns to chemical tendering system.
In certain operating condition, before sofening treatment, the total hardness of level-one DTL counter-infiltration system concentrated water is 1256.3mg/L, softening Total hardness that treated is 90.1mg/L.
(4) highly dense pond is produced into water, i.e. H is used in softening water outlet2SO4After pH value is adjusted to 6.0-7.0, carried out into sand filter Filter enters sand filtration production pond after removing SS.Sand filtration produces pond by the way of air water backwash, and anti-scouring water is that sand filtration produces water, instead It washes and drains back biochemical system.Sand filtration produce pond water outlet by promoted be pumped into second level DTL counter-infiltration system carry out secondary concentration subtract Amount.Second level DTL counter-infiltration system uses seawater film, and operation maximum pressure is 90bar.
The water outlet of second level DTL counter-infiltration system includes concentrated water and production water.The concentrated water of second level DTL counter-infiltration system enters and divides salt Collecting-tank travels further into the highly dense system of point salt and carries out sofening treatment；The production water of second level DTL counter-infiltration system is introduced into intermediate water Pond is mixed with the production water of level-one DTL counter-infiltration system.Since the quality requirements of recycle-water are very high, level-one and second level DTL are reverse osmosis The mixing of system produces water and is unable to satisfy the water quality requirement of recycle-water, therefore also needs to do further desalting processing to mixing production water.
(5) mixing is produced water and is sent to three-level rolling counter-infiltration system by elevator pump, and the production water of three-level rolling counter-infiltration system is complete The quality requirements of recycle-water all can be met.For the concentrated water of three-level rolling counter-infiltration system since water quality is preferable, SS is very low, can directly return Is produced from pond to V-type filter tank, improves the rate of recovery of system water.Three-level rolling counter-infiltration system is common rolling RO system, is used Bitter film, operation maximum pressure are 16bar.
Wherein, table 1 is the operation data of certain operating condition next stage, second level and three-level counter-infiltration system.Table 2 is by this After the processing of invention, the partial parameters test value of biochemical water and recycle-water.Table 3 is drinking water and reuse water section Testing index Comparison.
Table 1
In table 1, "-" expression is not present.
Table 2
Table 3
Test item Drinking water Recycle-water
pH 6.5-8.5 7.0-7.5
Conductivity (μ S/cm) ≤10 5-8.5
SiO2(mg/l) ≤20 10-16
Sodium ion (mg/l) 0.3 77.93
Total hardness (mg/l) ≤450 ≤5
Total coliform number It must not detect It is not detected
Escherichia coli It must not detect It is not detected
Total plate count (CFU/mL) 100 10-50
Heat-resisting coliform It must not detect It is not detected
From table 2 and table 3 it is found that recycle-water is compared with biochemical water, COD, hardness, basicity and solid content are decreased obviously.It removes Sodium ions content is higher outer, remaining index close to drinking water, can with economical and efficient Pharmaceutical Wastewater Treatment, have significant economical Benefit and social benefit.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.

Claims (10)

1. a kind of processing method of pharmacy waste water, which comprises the following steps:
(1) biochemical treatment and sterilization processing are successively carried out to pharmacy waste water, then waste water introduces the progress of V-type filter tank by treated Filtering removes the suspended matter in waste water；
(2) V-type filter tank is produced into water and introduces filter tank production pond, carried out sedimentation in the production pond of the filter tank and pH value is adjusted；Filter tank The water outlet for producing pond enters level-one DTL counter-infiltration system and carries out level-one desalination and concentration；The water outlet packet of level-one DTL counter-infiltration system It includes concentrated water and produces water；
(3) concentrated water of level-one DTL counter-infiltration system is introduced into highly dense cell system and carries out sofening treatment；Level-one DTL counter-infiltration system Production water introduce intermediate pool；
(4) highly dense pond is produced water introducing sand filter to be filtered, enters sand filtration production pond after removing suspended matter, is produced in the sand filtration Sedimentation is carried out in pond and pH value is adjusted；The water outlet that sand filtration produces pond enters second level DTL counter-infiltration system progress secondary concentration and subtracts Amount, the water outlet of second level DTL counter-infiltration system include concentrated water and production water；
(5) the production water of firsts and seconds DTL counter-infiltration system is mixed, is sent into three-level rolling counter-infiltration system and carries out at desalination Reason, obtains recycle-water.
2. the method according to claim 1, wherein the sterilization processing is at the biochemistry in step (1) NaClO is added in waste water after reason.
3. the method according to claim 1, wherein producing in pond and sequentially adding to the filter tank in step (2) NaHSO3And H2SO4, the pH value of the waste water is adjusted to 6.0-7.0, it is anti-that the water outlet that filter tank produces pond is then introduced level-one DTL Osmosis system.
4. being adopted the method according to claim 1, wherein the sofening treatment uses liquid alkaline method in step (3) Reagent includes liquid alkaline, PAC and PAM.
5. the method according to claim 1, wherein highly dense pond produces water turbidity≤10NTU, total hard in step (3) Degree≤100mg/L.
6. the method according to claim 1, wherein producing in pond and being added to the sand filtration in step (4) H2SO4, the pH value of the waste water is adjusted to 6.0-7.0, the water outlet that sand filtration produces pond is then introduced into second level DTL counter-infiltration system.
7. the method according to claim 1, wherein in step (4), the concentrated water of second level DTL counter-infiltration system into Enter to divide salt collecting-tank, travels further into the highly dense system of point salt and carry out sofening treatment；The production water of second level DTL counter-infiltration system is introduced Intermediate pool produces water with level-one DTL counter-infiltration system and mixes.
8. the method according to claim 1, wherein in step (5), conductivity≤100 μ S/ of the recycle-water Cm, COD≤30mg/L.
9. the method according to claim 1, wherein firsts and seconds DTL counter-infiltration system is reverse osmosis using DTL Equipment, three-level rolling counter-infiltration system use common rolling RO equipment.
10. according to the method described in claim 9, it is characterized in that, level-one DTL counter-infiltration system uses bitter film, operation Maximum pressure is 75bar；Second level DTL counter-infiltration system uses seawater film, and operation maximum pressure is 90bar；Three-level rolling reverse osmosis Permeable system uses bitter film, and operation maximum pressure is 16bar.
CN201811183573.7A 2018-10-11 2018-10-11 A kind of processing method of pharmacy waste water Pending CN109205943A (en)

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Application publication date: 20190115