CN108117196A - Leather waste water advanced treatment system and method - Google Patents
Leather waste water advanced treatment system and method Download PDFInfo
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- CN108117196A CN108117196A CN201810103441.2A CN201810103441A CN108117196A CN 108117196 A CN108117196 A CN 108117196A CN 201810103441 A CN201810103441 A CN 201810103441A CN 108117196 A CN108117196 A CN 108117196A
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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
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
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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
- 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
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
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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
- 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
- C02F1/5281—Installations for water purification using chemical agents
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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
- 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
- C02F1/54—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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- 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
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/22—Nature of the water, waste water, sewage or sludge to be treated from the processing of animals, e.g. poultry, fish, or parts thereof
- C02F2103/24—Nature of the water, waste water, sewage or sludge to be treated from the processing of animals, e.g. poultry, fish, or parts thereof from tanneries
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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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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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
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/026—Fenton's reagent
Abstract
The invention discloses a kind of leather waste water advanced treatment system and method, including：The sour pond of No.1 flocculation tank, No.1 inclined-tube sedimentation tank, buffer pool, tune, water dispensing apparatus, catalysis oxidizing tower, degassing pond, alkali tune pond, No. two flocculation tanks, No. two inclined-tube sedimentation tanks, PAC throwing devices, PAM throwing devices, catalysis and medicament addition device, sour throwing device, alkali throwing device and air blower；Wherein, No.1 flocculation tank is sequentially connected with No.1 inclined-tube sedimentation tank, buffer pool, the sour pond of tune, water dispensing apparatus, catalysis oxidizing tower, degassing pond, alkali tune pond, No. two flocculation tanks and No. two inclined-tube sedimentation tanks；No.1 flocculation tank sets wastewater inlet pipe；No. two inclined-tube sedimentation tanks set delivery pipe；Each throwing device correspondence is connected with each reaction tank.The system adds heterogeneous Fenton to handle using flocculation sediment, and treatment effect is reliable, and water outlet meets《Process hides and fur manufacturing industrial water pollution object discharge standard》The direct discharge standard of (GB30486 2013).
Description
Technical field
The present invention relates to the field of Environment Protection of wastewater treatment, more particularly to a kind of leather waste water advanced treatment system and side
Method.
Background technology
Leather-making waste water pollutional load is high, and waste component is complicated, and not only taste is smelly, the pollution of colourity, suspended matter, ammonia nitrogen, oxygen consumption object
Greatly, and the noxious materials such as heavy metal ion and sulfide are contained.Tannery Wastewater Treatment Technology is frequently with biochemical phase after first materialization
With reference to mode, however most engineering practice proves, after the first materialization it is biochemical be combined by the way of handle leather waste water, water outlet
COD is generally in more than 200mg/L, although employing the longer biochemical residence time to exchange the opposite stable operation of system for,
It is difficult to remove some hardly degraded organic substances in waste water, can only reach reluctantly《Process hides and fur manufacturing industrial water pollution object discharge mark
It is accurate》(GB30486-2013) indirect discharge standard.
There are many correlation techniques to be put to apply in the advanced treating field of waste water both at home and abroad, such as coagulating sedimentation, ozone oxidation
Method, active carbon adsorption, film-hyperfiltration etc..But under operating cost unanimous circumstances, the removal of leather waste water advanced treating
It is less efficient.
The content of the invention
Based on the problems of prior art, the object of the present invention is to provide a kind of leather waste water advanced treatment system and
Method, inexpensive, the efficient advanced treating leather waste water of energy, high treating effect.
The purpose of the present invention is what is be achieved through the following technical solutions：
Embodiment of the present invention provides a kind of leather waste water advanced treatment system, including：
The sour pond of No.1 flocculation tank, No.1 inclined-tube sedimentation tank, buffer pool, tune, water dispensing apparatus, catalysis oxidizing tower, degassing
Pond, alkali tune pond, No. two flocculation tanks, No. two inclined-tube sedimentation tanks, PAC throwing devices, PAM throwing devices, catalysis and medicament are thrown
Feeder apparatus, sour throwing device, alkali throwing device and air blower；Wherein,
The No.1 flocculation tank and No.1 inclined-tube sedimentation tank, buffer pool, adjust sour pond, water dispensing apparatus, catalysis oxidizing tower,
Degassing pond, alkali tune pond, No. two flocculation tanks and No. two inclined-tube sedimentation tanks are sequentially connected with；
The No.1 flocculation tank sets the wastewater inlet pipe for introducing leather waste water bio-chemical effluent；
No. two inclined-tube sedimentation tanks set the delivery pipe of discharged wastewater met the national standard；
The PAC throwing devices are connected with the No.1 flocculation tank；
The PAM throwing devices are connected respectively with the No.1 flocculation tank and No. two flocculation tanks；
The FeSO4Throwing device and H2O2Throwing device is connected with the catalysis oxidizing tower；
The acid throwing device adjusts sour pond to be connected with described；
The alkali throwing device is connected with the alkali tune pond；
The air blower is connected respectively with the degassing pond, the sour pond of tune and alkali tune pond.
Embodiment of the present invention also provides a kind of leather waste water deep treatment method, using leather waste water of the present invention
Advanced treatment system comprises the following steps：
Secondary clarifier effluent after biochemistry pool is handled leather waste water bio-chemical effluent, the leather waste water bio-chemical effluent weight
Power enters the No.1 flocculation tank of the processing system from water inlet pipe is flowed through, with adding in the No.1 flocculation tank
PAC, PAM form big grain size flco by being stirred, by three-level flocculation reaction, into No.1 inclined-tube sedimentation tank in consolidated
Liquid separates, and reduces SS；
The water outlet flow by gravity of the No.1 inclined-tube sedimentation tank enters buffer pool, carries out water quality in the buffer pool and water is equal
After change, the buffer pool water outlet gravity flow adjusts the air stirring through air blower in sour pond into sour pond is adjusted, described, and sewage is fast with acid
Speed mixing, pH are adjusted to 5~6；
Described that sour pond water outlet is adjusted to be pumped up into water dispensing apparatus, the water dispensing apparatus carries out water according to the quantity of catalysis oxidizing tower
Amount distribution, the water outlet after distribution enter the catalysis oxidizing tower by gravity stream pipeline；
Sewage into the catalytic oxidation tower, is urged in catalytic oxidation tower with fluidized state with water distribution manner
After agent carries out catalysis oxidation generation hydroxyl reaction removal organic pollutants, with water outlet after recirculation water water distribution；
The water outlet of the catalysis oxidizing tower enters degassing pond by flow by gravity；
Sewage removes the gas of oxidation reaction process generation in the degassing pond by air stirring；
The degassing pond water outlet enters alkali tune pond by flow by gravity, passes through air stirring, sewage and alkali in alkali tune pond
Quick mixing, pH pull back to neutrality；
By flow by gravity into No. two flocculation tanks, sewage, by being stirred, is passed through with PAM for alkali tune pond water outlet
Flocculation reaction is crossed, forms big grain size flco；
It is up to standard through delivery pipe after the water outlet of No. two flocculation tanks carries out separation of solid and liquid into No. two inclined-tube sedimentation tanks
Discharge.
As seen from the above technical solution provided by the invention, leather waste water advanced treating provided in an embodiment of the present invention
System and method, its advantage are：
The advanced treatment system adds heterogeneous Fenton to handle using flocculation sediment, compared with other chemical oxidation techniques
Speech, have operating process it is simple, be swift in response, without complex device the characteristics of；For homogeneous Fenton technologies, 1. carry
The high utilization rate of catalyst reduces adding for ferrous sulfate and hydrogen peroxide, and processing cost is opposite to be reduced；2. chemical sludge amount
It is opposite to reduce；3. reaction condition milder, the scope of pH value is wider；4. go out salinity water and electrical conductivity is obviously improved, inverse phenomenon
Unobvious are more advantageous to reuse.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the present invention, for this
For the those of ordinary skill in field, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is leather waste water advanced treatment system schematic diagram provided in an embodiment of the present invention；
In Fig. 1：1- No.1 flocculation tanks；2- No.1 inclined-tube sedimentation tanks；3- buffer pools；4- tune acid pond；5- water dispensing apparatus；
6- catalysis oxidizing towers；7- degassings pond；8- alkali tunes pond；No. bis- flocculation tanks of 9-；No. bis- inclined-tube sedimentation tanks of 10-；11-PAC is added
Device；12-PAM throwing devices；13-FeSO4Throwing device；14-H2O2Throwing device；15- acid throwing devices；16- alkali adds dress
It puts；17- raw sewage processing units；A- water inlet pipes；B- delivery pipes.
Fig. 2 is catalysis oxidizing tower organigram provided in an embodiment of the present invention；
In Fig. 2：20- reactor bodies；21- water intakes；22- water distributors；23- fluid beds；24- water outlets；25- is returned
Flow tube；26- catalyst adds mouth.
Specific embodiment
With reference to the particular content of the present invention, the technical solution in the embodiment of the present invention is clearly and completely retouched
It states, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.Based on the present invention
Embodiment, those of ordinary skill in the art's all other embodiments obtained without making creative work,
Belong to protection scope of the present invention.The content not being described in detail in the embodiment of the present invention belongs to professional and technical personnel in the field
The well known prior art.
As shown in Figure 1, the embodiment of the present invention provides a kind of leather waste water advanced treatment system, it is non-to be that a kind of flocculation sediment adds
The processing system of homogeneous Fenton, including：
The sour pond of No.1 flocculation tank, No.1 inclined-tube sedimentation tank, buffer pool, tune, water dispensing apparatus, catalysis oxidizing tower, degassing
Pond, alkali tune pond, No. two flocculation tanks, No. two inclined-tube sedimentation tanks, PAC throwing devices, PAM throwing devices, catalysis and medicament are thrown
Feeder apparatus, sour throwing device, alkali throwing device and air blower；Wherein,
The No.1 flocculation tank and No.1 inclined-tube sedimentation tank, buffer pool, adjust sour pond, water dispensing apparatus, catalysis oxidizing tower,
Degassing pond, alkali tune pond, No. two flocculation tanks and No. two inclined-tube sedimentation tanks are sequentially connected with；
The No.1 flocculation tank sets the wastewater inlet pipe for introducing leather waste water bio-chemical effluent；
No. two inclined-tube sedimentation tanks set the delivery pipe of discharged wastewater met the national standard；
The PAC throwing devices are connected with the No.1 flocculation tank；
The PAM throwing devices are connected respectively with the No.1 flocculation tank and No. two flocculation tanks；
The FeSO4Throwing device and H2O2Throwing device is connected with the catalysis oxidizing tower；
The acid throwing device adjusts sour pond to be connected with described；
The alkali throwing device is connected with the alkali tune pond；
The air blower is connected respectively with the degassing pond, the sour pond of tune and alkali tune pond.
Above-mentioned advanced treatment system, the sludge pipe of the No.1 flocculation tank bottom and No. two flocculation tank bottoms
Sludge pipe is connected respectively with the primary sludge processing unit of former leather waste water.
Above-mentioned advanced treatment system further includes：Between dosing and air blast computer room, the PAC throwing devices, PAM throwing devices,
Catalysis and medicament addition device, sour throwing device and alkali throwing device are each provided in the dosing；
The catalysis and medicament addition device include：FeSO4Throwing device, H2O2Throwing device and catalyst throwing device；
The air blower is located in the air blast computer room.
In above-mentioned advanced treatment system, PAC throwing devices, PAM throwing devices, catalysis and medicament addition device, acid add
Device and alkali throwing device are stored up tank connected chemical feed pipe with the medicament and are arranged on the chemical feed pipe by medicament storage tank
Dosing pump is formed.
As shown in Fig. 2, in above-mentioned advanced treatment system, catalytic oxidation tower includes：
Reactor body, its underpart set water intake, set gradually from bottom to up in the reactor body water distributor,
Fluid bed, the top of the reactor body set water outlet；
The top of the reactor body is equipped with refluxing opening, which passes through return duct and the water distributor equipped with circulating pump
Connection forms the automatic distributing system of reflux and water outlet；
Filled with solid catalyst, the reactor body lower part catalyst is set to add mouth in the reactor body.
In above-mentioned advanced treatment system, mechanical agitation dress is equipped in No.1 flocculation tank and No. two flocculation tanks
It puts.
In above-mentioned advanced treatment system, water dispensing apparatus, positioned at the top of the catalysis oxidizing tower, to catalysis oxidizing tower into
Row water operation.
The embodiment of the present invention also provides a kind of leather waste water deep treatment method, deep using leather waste water of the present invention
Processing system is spent, is comprised the following steps：
Secondary clarifier effluent after biochemistry pool is handled leather waste water bio-chemical effluent, the leather waste water bio-chemical effluent weight
Power enters the No.1 flocculation tank of the processing system from water inlet pipe is flowed through, with adding in the No.1 flocculation tank
PAC, PAM form big grain size flco by being stirred, by three-level flocculation reaction, into No.1 inclined-tube sedimentation tank in consolidated
Liquid separates, and reduces SS；
The water outlet flow by gravity of the No.1 inclined-tube sedimentation tank enters buffer pool, carries out water quality in the buffer pool and water is equal
After change, the buffer pool water outlet gravity flow adjusts the air stirring through air blower in sour pond into sour pond is adjusted, described, and sewage is fast with acid
Speed mixing, pH are adjusted to 5~6；
Described that sour pond water outlet is adjusted to be pumped up into water dispensing apparatus, the water dispensing apparatus carries out water according to the quantity of catalysis oxidizing tower
Amount distribution, the water outlet after distribution enter the catalysis oxidizing tower by gravity stream pipeline；
Sewage into the catalytic oxidation tower, is urged in catalytic oxidation tower with fluidized state with water distribution manner
After agent carries out catalysis oxidation generation hydroxyl reaction removal organic pollutants, with water outlet after recirculation water water distribution；
The water outlet of the catalysis oxidizing tower enters degassing pond by flow by gravity；
Sewage removes the gas of oxidation reaction process generation in the degassing pond by air stirring；
The degassing pond water outlet enters alkali tune pond by flow by gravity, passes through air stirring, sewage and alkali in alkali tune pond
Quick mixing, pH pull back to neutrality；
By flow by gravity into No. two flocculation tanks, sewage, by being stirred, is passed through with PAM for alkali tune pond water outlet
Flocculation reaction is crossed, forms big grain size flco；
It is up to standard through delivery pipe after the water outlet of No. two flocculation tanks carries out separation of solid and liquid into No. two inclined-tube sedimentation tanks
Discharge.
Above-mentioned leather waste water advanced treatment system adds heterogeneous Fenton to handle leather waste water, processing effect using flocculation sediment
Fruit is reliable, and water outlet can meet《Process hides and fur manufacturing industrial water pollution object discharge standard》(GB30486-2013) direct row
Put standard.
The embodiment of the present invention is specifically described in further detail below.
As shown in Figure 1, the leather waste water advanced treatment system of the present embodiment, is that a kind of flocculation sediment adds heterogeneous Fenton
System, including：No.1 flocculation tank, No.1 inclined-tube sedimentation tank, buffer pool, adjust sour pond, water dispensing apparatus, catalysis oxidizing tower,
Deaerate pond, alkali tune pond, No. two flocculation tanks, No. two between inclined-tube sedimentation tank, dosing and air blast computer room, wherein, is set in dosing
It puts and air blower is set in each medicament addition device, air blast computer room；It can reach leather waste water by the advanced treatment system《Process hides
And fur manufacturing industrial water pollution object discharge standard》(GB30486-2013) direct discharge standard.Specifically, the advanced treating
In system, No.1 flocculation tank connects the secondary settling tank after biochemistry pool by gravity stream pipeline, is set in No.1 flocculation tank
Three-level mechanical agitation is put, No.1 flocculation tank is connected to No.1 inclined-tube sedimentation tank by gravity stream pipeline；The interior setting of dosing
PAC, PAM throwing device, medicament are sent by pumping to No.1 flocculation tank；
No.1 inclined-tube sedimentation tank is connected to buffer pool by gravity stream pipeline；No.1 inclined-tube sedimentation tank bottom is equipped with sludge pipe,
Sludge is sent by pumping to leather waste water raw sewage processing system；
Buffer pool is by hole with sour pond is adjusted to be connected.
Sour pond is adjusted to be sent by pumping to water dispensing apparatus；Dosing is interior to set sour throwing device, and medicament is sent by pumping to the sour pond of tune.
Water dispensing apparatus is connected to catalysis oxidizing tower by gravity stream pipeline.
Catalysis oxidizing tower is connected to degassing pond by gravity stream pipeline；Catalysis oxidizing tower be internally provided with water-distributing device, supporting layer,
Discharging device, outside are equipped with probe tube, emptying pipe, return duct；Dosing is interior to set ferrous sulfate, hydrogen peroxide, catalysis and medicament
Throwing device, medicament are sent by pumping to catalysis oxidizing tower.
Degassing pond is connected to alkali tune pond by gravity stream pipeline；Air blower is set in air blast computer room, gas by air blower send to
Deaerate pond, and carries out air stripping.
Alkali tune pond is connected to No. two flocculation tanks by gravity stream pipeline；Dosing is interior to set alkali throwing device, and medicament leads to
It crosses and is pumped to alkali tune pond；Air blower is set in air blast computer room, and gas is sent by air blower to degassing pond, and carries out air stirring.
By mechanical agitation, No. two inclined-tube sedimentation tanks are connected to by gravity stream pipeline for No. two flocculation tanks；In dosing
PAM throwing devices are set, and medicament is sent by pumping to No. two flocculation tanks.
No. two inclined-tube sedimentation tanks are connected to emission point by gravity stream pipeline；No. two inclined-tube sedimentation tank bottoms are equipped with sludge pipe,
Sludge is sent by pumping to leather waste water raw sewage processing system.
The interior throwing device that acid, alkali, ferrous sulfate, hydrogen peroxide, catalyst, PAC and PAM are set of dosing, throwing device
Pass through metering pump or screw rod containing dosing pump (screw pump can be used), medicine storing pot and metering pump or dispensation apparatus and metering pump, medicament
It is pumped to corresponding reaction member.
Air blower in air blast computer room is set, is sent by pipeline to corresponding reaction member.
The step of leather waste water advanced treatment system of the present invention, processing leather waste water, is as follows：
Step 1：Secondary clarifier effluent after biochemistry pool, COD is in 300mg/L or so, and SS is in 30mg/L or so, flow by gravity
Enter the No.1 flocculation tank, mixed with PAC, PAM by mechanical agitation, by three-level flocculation reaction, form larger grain
The flco in footpath, and carry out separation of solid and liquid in the No.1 inclined-tube sedimentation tank.Preferably, PAC dosages are left in 50mg/L
The right side, PAM dosages are respectively in 0.5mg/L or so, the flocculated stir speed (S.S.) of three-level：8rpm、5.2rpm、3.8rpm.Inclined tube sinks
The surface loading in shallow lake pond is 1.5m3/m2H, inclined tube aperture are preferably greater than 80mm, and pipe plagioclase preferably takes 1000mm, and oblique angle is preferably 60 °.Go out
Water COD is in 280mg/L or so, and SS is in 15mg/L or so.
Step 2：After further reducing SS, water outlet flow by gravity enters the buffer pool, after water quality, water are homogenized, passes through
Tune acid pond described in hole from inflow.Air stirring is set in pond, sewage is quickly mixed with acid, and pH is adjusted to 5.5 or so, passes through pump
It send to the water dispensing apparatus.The sour pond basin's effective volume of buffer pool, tune is respectively 1h, 5min, and air stirring intensity is not preferably less than
0.6m3/m3·h。
Step 3：The water dispensing apparatus, positioned at the top of the catalysis oxidizing tower, water outlet is connect by gravity stream pipeline
To the catalysis oxidizing tower.General water dispensing apparatus dischargeable capacity is 1min.
Step 4：The catalytic oxidation tower, make catalyst under fluidized state with Fe2+Realize concerted reaction, jointly
Catalysis and excitation H2O2Generation hydroxyl reaction quickly generates a greater amount of hydroxyl radical free radical substance HO with Strong oxdiative ability,
Organic pollution in HO oxidized waste waters, is eventually converted into CO2And H2O etc. realizes the further removal of COD.Water outlet passes through weight
Force flow pipeline is connected to the degassing pond.Reaction tower basin's effective volume is 1h, tower height 12m.27.5% hydrogen peroxide dosage is
1kg/m3Water, ferrous sulfate (FeSO4·H2O) dosage is 2kg/m3Water.
Step 5：The degassing pond, using air stirring, water outlet is connected to the alkali tune pond by gravity stream pipeline.Have
It imitates pond and holds respectively 10min, air stirring intensity is not preferably less than 0.6m3/m3·h。
Step 6：The alkali tune pond, using air stirring, pH pulls back to neutrality, and water outlet is connected to institute by gravity stream pipeline
No. two flocculation tanks stated.Basin's effective volume is respectively 5min, and air stirring intensity is not preferably less than 0.6m3/m3·h。
Step 7：No. two flocculation tanks, sewage is mixed with PAM by mechanical agitation, by flocculation reaction, shape
Into the flco of greater particle size, and separation of solid and liquid is carried out in No. two inclined-tube sedimentation tanks.Preferably, PAM dosages exist
1mg/L or so, flocculated stir speed (S.S.) are respectively：3.8rpm.The surface loading of inclined-tube sedimentation tank is 1.5m3/m2H, inclined tube hole
Footpath is preferably greater than 80mm, and pipe plagioclase preferably takes 1000mm, and oblique angle is preferably 60 °.Water outlet COD is less than 100mg/L, and SS is less than 10mg/L.
The advanced treatment system of the present invention is handled using flocculation sediment plus heterogeneous Fenton, and treatment effect is reliable, water outlet
It can meet《Process hides and fur manufacturing industrial water pollution object discharge standard》(GB30486-2013) direct discharge standard.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art is in the technical scope of present disclosure, the change or replacement that can readily occur in,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Subject to enclosing.
Claims (8)
1. a kind of leather waste water advanced treatment system, which is characterized in that including：
The sour pond of No.1 flocculation tank, No.1 inclined-tube sedimentation tank, buffer pool, tune, water dispensing apparatus, catalysis oxidizing tower, degassing pond, tune
Alkali pond, No. two flocculation tanks, No. two inclined-tube sedimentation tanks, PAC throwing devices, PAM throwing devices, catalysis and adding of agent dress
It puts, sour throwing device, alkali throwing device and air blower；Wherein,
The No.1 flocculation tank and No.1 inclined-tube sedimentation tank, buffer pool, the sour pond of tune, water dispensing apparatus, catalysis oxidizing tower, degassing
Pond, alkali tune pond, No. two flocculation tanks and No. two inclined-tube sedimentation tanks are sequentially connected with；
The No.1 flocculation tank sets the wastewater inlet pipe for introducing leather waste water bio-chemical effluent；
No. two inclined-tube sedimentation tanks set the delivery pipe of discharged wastewater met the national standard；
The PAC throwing devices are connected with the No.1 flocculation tank；
The PAM throwing devices are connected respectively with the No.1 flocculation tank and No. two flocculation tanks；
The FeSO4Throwing device and H2O2Throwing device is connected with the catalysis oxidizing tower；
The acid throwing device adjusts sour pond to be connected with described；
The alkali throwing device is connected with the alkali tune pond；
The air blower is connected respectively with the degassing pond, the sour pond of tune and alkali tune pond.
2. leather waste water advanced treatment system according to claim 1, which is characterized in that the No.1 flocculation reaction bottom of pond
The sludge pipe in portion and the sludge pipe of No. two flocculation tank bottoms are connected respectively with the primary sludge processing unit of former leather waste water.
3. leather waste water advanced treatment system according to claim 1, which is characterized in that further include：Between dosing and air blast
Computer room, the PAC throwing devices, PAM throwing devices, catalysis and medicament addition device, sour throwing device and alkali throwing device are equal
It is located in the dosing；
The catalysis and medicament addition device include：FeSO4Throwing device, H2O2Throwing device and catalyst throwing device；
The air blower is located in the air blast computer room.
4. the leather waste water advanced treatment system according to claim 1 or 3, which is characterized in that the PAC throwing devices,
PAM throwing devices, catalysis and medicament addition device, sour throwing device and alkali throwing device are stored up by medicament storage tank with the medicament
Tank connected chemical feed pipe and the dosing pump being arranged on the chemical feed pipe and metering pump are formed.
5. leather waste water advanced treatment system according to any one of claims 1 to 3, which is characterized in that the catalysis oxygen
Changing reaction tower includes：
Reactor body, its underpart set water intake, set gradually water distributor, fluidisation in the reactor body from bottom to up
Bed, the top of the reactor body set water outlet；
The top of the reactor body is equipped with refluxing opening, which passes through the return duct equipped with circulating pump and connect with the water distributor
It connects；
Filled with solid catalyst, the reactor body lower part catalyst is set to add mouth in the reactor body.
6. leather waste water advanced treatment system according to any one of claims 1 to 3, which is characterized in that the No.1 wadding
Mechanical stirring device is equipped in solidifying reaction tank and No. two flocculation tanks.
7. leather waste water advanced treatment system according to any one of claims 1 to 3, which is characterized in that the water distribution dress
It puts, positioned at the top of the catalysis oxidizing tower, water operation is carried out to catalysis oxidizing tower.
8. a kind of leather waste water deep treatment method, which is characterized in that given up using claim 1 to 7 any one of them leather
Water depth processing system, comprises the following steps：
Secondary clarifier effluent after biochemistry pool is handled leather waste water bio-chemical effluent, and the leather waste water bio-chemical effluent gravity is certainly
Flow through water inlet pipe enter the processing system No.1 flocculation tank, with added in the No.1 flocculation tank PAC,
PAM forms big grain size flco by being stirred, by three-level flocculation reaction, into No.1 inclined-tube sedimentation tank in carry out solid-liquid point
From reduction SS；
The water outlet flow by gravity of the No.1 inclined-tube sedimentation tank enters buffer pool, and carry out water quality in the buffer pool is homogenized with water
Afterwards, the buffer pool water outlet gravity flow adjusts the air stirring through air blower in sour pond, sewage is quick with acid into sour pond is adjusted described
Mixing, pH are adjusted to 5~6；
Described that sour pond water outlet is adjusted to be pumped up into water dispensing apparatus, the water dispensing apparatus carries out water point according to the quantity of catalysis oxidizing tower
Match somebody with somebody, the water outlet after distribution enters the catalysis oxidizing tower by gravity stream pipeline；
Sewage with water distribution manner into the catalytic oxidation tower, in catalytic oxidation tower with the catalyst of fluidized state
After carrying out catalysis oxidation generation hydroxyl reaction removal organic pollutants, with water outlet after recirculation water water distribution；
The water outlet of the catalysis oxidizing tower enters degassing pond by flow by gravity；
Sewage removes the gas of oxidation reaction process generation in the degassing pond by air stirring；
The degassing pond water outlet enters alkali tune pond by flow by gravity, and by air stirring in alkali tune pond, sewage is quick with alkali
Mixing, pH pull back to neutrality；
Alkali tune pond water outlet by flow by gravity into No. two flocculation tanks, sewage with PAM by being stirred, by wadding a quilt with cotton
Solidifying reaction, forms big grain size flco；
After the water outlet of No. two flocculation tanks carries out separation of solid and liquid into No. two inclined-tube sedimentation tanks, through delivery pipe row up to standard
It puts.
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