CN107487904A - A kind of iron content waste water pretreatment unit - Google Patents
A kind of iron content waste water pretreatment unit Download PDFInfo
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- CN107487904A CN107487904A CN201710933070.6A CN201710933070A CN107487904A CN 107487904 A CN107487904 A CN 107487904A CN 201710933070 A CN201710933070 A CN 201710933070A CN 107487904 A CN107487904 A CN 107487904A
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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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/70—Treatment of water, waste water, or sewage by reduction
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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
- C02F2001/007—Processes including a sedimentation step
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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
- C02F2001/5218—Crystallization
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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
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/203—Iron or iron compound
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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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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The present invention relates to a kind of iron content waste water pretreatment unit, including regulating reservoir, reduction reaction pond, crystalline deposit pond, quicksand filter tank and tank, regulating reservoir, reduction reaction pond, crystalline deposit pond, quicksand filter tank and tank are sequentially communicated；Regulating reservoir includes regulating reservoir water inlet pipe and regulating reservoir outlet pipe；The middle and upper part of reduction reaction pond is provided with reduction reaction pond water inlet pipe, top is provided with reducing agent addition metering system, middle part is provided with reduction reaction pond agitator, bottom is provided with reduction reaction pond outlet pipe；Crystalline deposit pond includes the overfalling weir of connection crystalline deposit pond outlet pipe and the outlet pipe of connection flow sand filter water inlet pipe；The quicksand filter tank outlet pipe of water after quicksand filter tank is provided with quicksand filter tank water inlet pipe and handled for discharge, including water distribution area, washed-out sand area and sand filtration area；Water after the processing of quicksand filter enters tank.
Description
Technical field
The present invention relates to environmental technology field, and in particular to a kind of iron content waste water pretreatment unit.
Background technology
It is existing in China《Industrial " three Waste " discharges tentative standard》In, the content of iron does not impose any restrictions.If but it will contain
Iron waste water directly discharges, and dissolubility iron ion present in waste water causes the dissolved oxygen in water body to reduce rapidly, and draining is in red orange
Color and muddiness, once into ecological circulation, significant damage can be produced to ecological safety and human health.
Iron content heavy metal wastewater thereby is mainly derived from noble metal processing draining in Practical Project, mainly includes mine mine
Draining, steel production and processing water outlet, part metals etching and processing and electroplate technology water outlet etc., during these processings
Different links can produce the iron largely containing higher concentration different shape, belong to intractable a kind of waste water.
Chinese patent《A kind of processing unit and treating method of pickling iron content waste water》(the patent No.：201410288531.5)
A kind of processing unit and treating method of pickling iron content waste water are disclosed, iron content waste water can be handled.The invention passes through
Oil removal, aeration, accurate adjustment pH, primary sedimentation and secondary precipitation are neutralized, in and when being aerated, block lime stone is sent into neutralization in batches
Aerated reaction pond, the device have the advantages that simple and easy, sediment is few；But the patent has the following disadvantages：Block lime stone point
Feeding neutralization aerated reaction pond is criticized to increase processing cost and running cost, aggravated business burden.
The content of the invention
The technical problem to be solved in the present invention is：In order to solve the process problem of above-mentioned iron content waste water, the present invention provides one
Kind iron content waste water pretreatment unit.
The technical solution adopted for the present invention to solve the technical problems is：A kind of iron content waste water pretreatment unit, including adjust
Save pond, reduction reaction pond, crystalline deposit pond, quicksand filter tank and tank, regulating reservoir, reduction reaction pond, crystalline deposit pond, quicksand
Filter tank and tank are sequentially communicated.
Described regulating reservoir includes regulating reservoir water inlet pipe and regulating reservoir outlet pipe, for adjusting the water quality and water of waste water.
The middle and upper part of described reduction reaction pond is provided with reduction reaction pond water inlet pipe, and the top of reduction reaction pond is provided with
Reducing agent adds metering system；Reduction reaction pond agitator is provided with the middle part of reduction reaction pond, the bottom of reduction reaction pond is set
It is equipped with reduction reaction pond outlet pipe.
The reducing agent of described reducing agent addition metering system addition is sodium hydrogensulfite.
Described crystalline deposit pond includes crystal region and settling zone.
The middle and upper part of described crystal region is provided with crystalline deposit pond water inlet pipe, and the top of crystal region is provided with crystallization induction
Metering system is added in agent；The middle and lower part of crystal region is provided with crystal region agitator.
The crystallization derivant of described crystallization derivant addition metering system addition is the quartz sand of coating sodium carbonate；It is described
The preparation process of crystallization derivant be：
Soaked 1. quartz sand is put into 1mol/L sodium carbonate liquor, 24h is vibrated in shaking table；
2. by the quartz sand filtration after immersion；
3. the quartz sand after filtering is cleaned with deionized water；
4. the quartz after cleaning is dried, crystallization derivant is made.
Dividing plate is provided between crystal region and settling zone, the inwall formation in the dividing plate and crystalline deposit pond enters as waste water sinks
The waste water runner in shallow lake area, the exit of settling zone are provided with crystalline deposit pond three phase separator, and the outlet top of settling zone is provided with knot
Brilliant sedimentation basin overfalling weir, the tapered structure of settling zone bottom design, pyramidal structure bottom is provided with sediment discharge valve.Crystallization
Sedimentation basin overfalling weir connection crystalline deposit pond outlet pipe, crystalline deposit pond outlet pipe connection flow sand filter water inlet pipe.
The quicksand filter tank outlet pipe of water, described after the quicksand filter tank includes quicksand filter tank water inlet pipe and handled for discharge
Quicksand filter tank include water distribution area, washed-out sand area and sand filtration area；Described water distribution area is located at the bottom in quicksand filter tank, and water distribution area is provided with
Quicksand filter tank water distributor, quicksand filter tank water distributor connection flow sand filter water inlet pipe is more preferable for the effect of wastewater treatment, described
Quicksand filter tank water distributor is arranged to concentric circles, has downward radiation delivery port on the water distributor of quicksand filter tank；Described washed-out sand
Area is located at the center in quicksand filter tank, is cylindrical barrel structure, and cylindrical barrel structure lower ending opening is located at quicksand filter tank most
Bottom, cylindrical barrel structure upper end open are located at the top in quicksand filter tank, and the middle part in washed-out sand area is provided with stripping tube, and stripping tube connects
The quicksand filter tank air blower outside quicksand filter tank is connect, the top in washed-out sand area is provided with sand water sedimentation Disengagement zone, sand water sedimentation Disengagement zone
Top is provided with washed-out sand area overfalling weir, washed-out sand area overfalling weir connection washed-out sand water discharge spout and crystalline deposit pond water inlet pipe, sand water sedimentation
The bottom of Disengagement zone is provided with back sand passage；Described sand filtration area is located at the periphery in washed-out sand area, and fine sand, sand filtration are filled with sand filtration area
Area top is provided with sand filtration area overfalling weir, sand filtration area overfalling weir connection flow sand filter outlet pipe, the water after the processing of quicksand filter
Into tank.
A kind of method that wastewater treatment is carried out using above-mentioned iron content waste water processing unit, has following steps：
1. iron content waste water enters regulating reservoir, regulating water quality, water and pH value by regulating reservoir water inlet pipe.
2. the waste water after regulation enters reduction reaction pond, reducing agent addition metering system adds reducing agent sodium hydrogensulfite,
Reduction reaction pond agitator is stirred to waste water, and the ferric ion in waste water is reduced into the divalence that out-phase crystallization easily occurs
Iron ion.
3. the waste water after reduction reaction enters crystal region, crystallization derivant addition metering system by crystalline deposit pond water inlet pipe
System addition crystallization derivant, crystal region agitator are stirred mixing to waste water.
4. and then waste water enters the waste water runner of settling zone, crystallization reaction, crystalline deposit pond three phase separator occur for waste water
The separation of waste water and solid is realized, sediment sinks to the bottom of settling zone under gravity, passes through the sediment of bottom
Drain valve is discharged, and the waste water after precipitation is intake by crystalline deposit pond overfalling weir and crystalline deposit pond outlet pipe into quicksand filter tank
Pipe.
5. waste water enters the bottom in quicksand filter tank, quicksand filter tank cloth by quicksand filter tank water inlet pipe, quicksand filter tank water distributor
Water pipe realizes water distribution uniformity, and waste water enters sand filtration area, and the pollutant in waste water is further filtered, and then waste water passes through sand filtration area
Flowed out by sand filtration area overfalling weir and quicksand filter tank outlet pipe, into tank；Air-flow caused by the air blower of quicksand filter tank drives and washed
Sha Heshui in sand area is flowed up, while sand is rinsed, and the sand and water in air-flow drive washed-out sand area enter sand water sedimentation
Disengagement zone, because sand is different with the proportion of water, fine deposition goes down and flows into sand filtration area by returning sand passage, realizes in sand filtration area
Fine sand constantly movement from top to bottom, the water in sand water sedimentation Disengagement zone entered by washed-out sand area overfalling weir and washed-out sand water discharge spout
Enter crystalline deposit pond to be reprocessed.
6. the effluent reuse of tank or further processing.
7. sediment caused by crystalline deposit pond is concentrated, dehydration recycles.
The beneficial effects of the invention are as follows：Suit measures to local conditions, capital expenditure is few, easy to maintenance, and energy consumption is relatively low, to waste water have than
Preferable treatment effect.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
In Fig. 1：1. reduction reaction pond, 1-1. reduction reaction pond water inlet pipes, 1-2. reducing agents addition metering system, 1-3. is also
Former reaction tank agitator, 1-4. reduction reaction pond outlet pipes.
Fig. 2 is the structural representation in crystalline deposit of embodiment of the present invention pond.
In Fig. 2：2. crystalline deposit pond, 2-1. crystal regions, 2-2. settling zones, 2-3. crystalline deposits pond water inlet pipe, 2-4. knots
Brilliant derivant adds metering system, 2-5. crystal regions agitator, 2-6. dividing plates, 2-7. crystalline deposits pond three phase separator, 2-8.
Crystalline deposit pond overfalling weir, 2-9. sediment discharge valves.
Fig. 3 is the structural representation in quicksand of embodiment of the present invention filter tank.
In Fig. 3：3. quicksand filter tank, 3-1. quicksands filter tank water inlet pipe, 3-2. quicksands filter tank water distributor, 3-3. stripping tubes, 3-
4. quicksand filter tank air blower, 3-5. washed-out sands area overfalling weir, 3-6. return sand passage, 3-7. sand filtrations area overfalling weir.
Fig. 4 is the process chart of the embodiment of the present invention.
Embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These accompanying drawings are rough schematic view, only to show
Meaning mode illustrates the basic structure of the present invention, therefore it only shows the composition relevant with the present invention.
Embodiment
As shown in Figure 1 to 4, a kind of iron content waste water pretreatment unit of the present invention, including regulating reservoir, reduction reaction pond 1, knot
Brilliant sedimentation basin 2, quicksand filter tank 3 and tank, regulating reservoir, reduction reaction pond 1, crystalline deposit pond 2, quicksand filter tank 3 and tank
It is sequentially communicated.
Described regulating reservoir includes regulating reservoir water inlet pipe and regulating reservoir outlet pipe, for adjust the water quality of waste water, water and
PH value.
The middle and upper part of described reduction reaction pond 1 is provided with reduction reaction pond water inlet pipe 1-1, and the top of reduction reaction pond is set
It is equipped with reducing agent addition metering system 1-2；Reduction reaction pond agitator 1-3, reduction reaction are provided with the middle part of reduction reaction pond
The bottom in pond is provided with reduction reaction pond outlet pipe 1-4.
The reducing agent of described reducing agent addition metering system 1-2 additions is sodium hydrogensulfite.
Described crystalline deposit pond 2 includes crystal region 2-1 and settling zone 2-2.
Described crystal region 2-1 middle and upper part is provided with crystalline deposit pond water inlet pipe 2-3, and the top of crystal region is provided with knot
Brilliant derivant adds metering system 2-4, and the bottom of crystal region is provided with crystal region agitator 2-5.
The crystallization derivant of described crystallization derivant addition metering system addition is the quartz sand of coating sodium carbonate；It is described
The preparation process of crystallization derivant be：
Soaked 1. quartz sand is put into 1mol/L sodium carbonate liquor, 24h is vibrated in shaking table；
2. by the quartz sand filtration after immersion；
3. the quartz sand after filtering is cleaned with deionized water；
4. the quartz after cleaning is dried, crystallization derivant is made.
Dividing plate 2-6 is provided between the crystal region 2-1 and settling zone 2-2, the dividing plate and the inwall in crystalline deposit pond are formed
Entering settling zone 2-2 waste water runner as waste water, settling zone 2-2 exit is provided with crystalline deposit pond three phase separator 2-7,
The outlet top of settling zone is provided with crystalline deposit pond overfalling weir 2-8, the tapered structure of settling zone bottom design, at pyramidal structure bottom
Portion is provided with sediment discharge valve 2-9.Crystalline deposit pond overfalling weir 2-8 connection crystalline deposits pond outlet pipe, crystalline deposit pond goes out
Water pipe connection flow sand filter water inlet pipe.
The quicksand filter tank outlet pipe of water after the quicksand filter tank 3 includes quicksand filter tank water inlet pipe 3-1 and handled for discharge,
Described quicksand filter tank includes water distribution area, washed-out sand area and sand filtration area；Described water distribution area is located at the bottom in quicksand filter tank, water distribution area
Provided with quicksand filter tank water distributor 3-2, quicksand filter tank water distributor 3-2 connection flow sand filter water inlet pipe 3-1, for the effect of wastewater treatment
Fruit is more preferable, and described quicksand filter tank water distributor 3-2 is arranged to concentric circles, goes out on the water distributor of quicksand filter tank with downward radiation
The mouth of a river；Described washed-out sand area is located at the center in quicksand filter tank, is cylindrical barrel structure, cylindrical barrel structure lower ending opening position
Bottommost in quicksand filter tank, cylindrical barrel structure upper end open are located at the top in quicksand filter tank, and the middle part in washed-out sand area is provided with
Stripping tube 3-3, the quicksand filter tank air blower 3-4 outside stripping tube 3-3 connection flow sand filters, the top in washed-out sand area is provided with sand water sedimentation
Disengagement zone, the top of sand water sedimentation Disengagement zone are provided with washed-out sand area overfalling weir 3-5, the discharge of washed-out sand area overfalling weir 3-5 connection washed-out sands water
Pipe and crystalline deposit pond water inlet pipe, the bottom of sand water sedimentation Disengagement zone is provided with back sand passage 3-6；Described sand filtration area is located at washed-out sand
The periphery in area, fine sand is filled with sand filtration area, sand filtration area top is provided with sand filtration area overfalling weir 3-7, the overfalling weir 3-7 connections of sand filtration area
Quicksand filter tank outlet pipe, the water after the processing of quicksand filter enter tank reuse.
A kind of method that wastewater treatment is carried out using above-mentioned iron content waste water processing unit, has following steps：
1. iron content waste water enters regulating reservoir, regulating water quality, water and pH value by regulating reservoir water inlet pipe.
2. the waste water after regulation enters reduction reaction pond 1, reducing agent addition metering system 1-2 addition reducing agent bisulfites
Sodium, reduction reaction pond agitator 1-3 are stirred to waste water, the ferric ion in waste water are reduced into out-phase crystallization easily occurs
Ferrous ion.
3. the waste water after reduction reaction enters crystal region 2-1, crystallization derivant addition by crystalline deposit pond water inlet pipe 2-3
Metering system 2-4 addition crystallization derivants, crystal region agitator 2-5 are stirred mixing to waste water.
4. and then waste water enters the waste water runner of settling zone, crystallization reaction, crystalline deposit pond three phase separator occur for waste water
2-7 realizes the separation of waste water and solid, and sediment sinks to the bottom of settling zone under gravity, passes through the precipitation of bottom
Thing drain valve 2-9 is discharged, and the waste water after precipitation enters quicksand by crystalline deposit pond overfalling weir 2-8 and crystalline deposit pond outlet pipe
Filter tank water inlet pipe 3-1.
5. waste water enters the bottom in quicksand filter tank, quicksand by quicksand filter tank water inlet pipe 3-1, quicksand filter tank water distributor 3-2
Filter tank water distributor 3-2 realizes water distribution uniformity, and waste water enters sand filtration area, and the pollutant in waste water is further filtered, then waste water
Through sand filtration area, flowed out by sand filtration area overfalling weir 3-7 and quicksand filter tank outlet pipe, into tank；Quicksand filter tank air blower 3-4
Caused air-flow drives the Sha Heshui in washed-out sand area to flow up, while sand is rinsed, and then sand and water sink into sand water
Shallow lake Disengagement zone, because sand is different with the proportion of water, fine deposition goes down and flows into sand filtration area by returning sand passage 3-6, realizes sand
Filter the fine sand constantly movement from top to bottom in area, the water in sand water sedimentation Disengagement zone passes through washed-out sand area overfalling weir 3-5 and washed-out sand
Water discharge spout is reprocessed into crystalline deposit pond.
6. the effluent reuse of tank or further processing.
7. sediment caused by crystalline deposit pond is concentrated, dehydration recycles.
It is complete by above-mentioned description, relevant staff using the above-mentioned desirable embodiment according to the present invention as enlightenment
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.This invention it is technical
Scope is not limited to the content on specification, it is necessary to determines its technical scope according to right.
Claims (2)
- A kind of 1. iron content waste water pretreatment unit, it is characterised in that：Including regulating reservoir, reduction reaction pond (1), crystalline deposit pond (2), quicksand filter tank (3) and tank, regulating reservoir, reduction reaction pond (1), crystalline deposit pond (2), quicksand filter tank (3) and water storage Pond is sequentially communicated；Described regulating reservoir includes regulating reservoir water inlet pipe and regulating reservoir outlet pipe, for adjusting the water quality, water and pH value of waste water；The middle and upper part of described reduction reaction pond (1) is provided with reduction reaction pond water inlet pipe (1-1), and the top of reduction reaction pond is set It is equipped with reducing agent addition metering system (1-2)；Reduction reaction pond agitator (1-3) is provided with the middle part of reduction reaction pond, is reduced The bottom of reaction tank is provided with reduction reaction pond outlet pipe (1-4)；The reducing agent of described reducing agent addition metering system (1-2) addition is sodium hydrogensulfite；Described crystalline deposit pond (2) includes crystal region (2-1) and settling zone (2-2)；The middle and upper part of described crystal region (2-1) is provided with crystalline deposit pond water inlet pipe (2-3), and the top of crystal region is provided with knot Brilliant derivant addition metering system (2-4), the bottom of crystal region is provided with crystal region agitator (2-5)；The crystallization derivant of described crystallization derivant addition metering system addition is the quartz sand of coating sodium carbonate；The preparation process of described crystallization derivant is：Soaked 1. quartz sand is put into 1mol/L sodium carbonate liquor, 24h is vibrated in shaking table；2. by the quartz sand filtration after immersion；3. the quartz sand after filtering is cleaned with deionized water；4. the quartz after cleaning is dried, crystallization derivant is made；Dividing plate (2-6), the dividing plate and the inwall shape in crystalline deposit pond are provided between the crystal region (2-1) and settling zone (2-2) Into the waste water runner for entering settling zone (2-2) as waste water, the exit of settling zone (2-2) is provided with crystalline deposit pond three phase separation Device (2-7), the outlet top of settling zone are provided with crystalline deposit pond overfalling weir (2-8), the tapered structure of settling zone bottom design, Pyramidal structure bottom is provided with sediment discharge valve (2-9)；Crystalline deposit pond overfalling weir (2-8) connects crystalline deposit pond water outlet Pipe, crystalline deposit pond outlet pipe connection flow sand filter water inlet pipe；The quicksand filter tank outlet pipe of water after the quicksand filter tank (3) includes quicksand filter tank water inlet pipe (3-1) and handled for discharge, Described quicksand filter tank includes water distribution area, washed-out sand area and sand filtration area；Described water distribution area is located at the bottom in quicksand filter tank, water distribution area Provided with quicksand filter tank water distributor (3-2), quicksand filter tank water distributor (3-2) connection flow sand filter water inlet pipe (3-1), at waste water The effect of reason is more preferable, and described quicksand filter tank water distributor (3-2) is arranged to concentric circles, have on the water distributor of quicksand filter tank to Lower radiation delivery port；Described washed-out sand area is located at the center in quicksand filter tank, is cylindrical barrel structure, under cylindrical barrel structure End opening is located at the bottommost in quicksand filter tank, and cylindrical barrel structure upper end open is located at the top in quicksand filter tank, washed-out sand area Middle part is provided with stripping tube (3-3), the quicksand filter tank air blower (3-4) outside stripping tube (3-3) connection flow sand filter, washed-out sand area it is upper Portion is provided with sand water sedimentation Disengagement zone, and the top of sand water sedimentation Disengagement zone is provided with washed-out sand area overfalling weir (3-5), washed-out sand area overfalling weir (3-5) connects washed-out sand water discharge spout and crystalline deposit pond water inlet pipe, the bottom of sand water sedimentation Disengagement zone are provided with back sand passage (3- 6)；Described sand filtration area is located at the periphery in washed-out sand area, and fine sand is filled with sand filtration area, and sand filtration area top is provided with sand filtration area overfalling weir (3-7), sand filtration area overfalling weir (3-7) connection flow sand filter outlet pipe, the water after the processing of quicksand filter return into tank With.
- A kind of 2. iron content waste water pretreatment unit according to claim 1, it is characterised in that：It is pre- using above-mentioned iron content waste water The method that processing unit carries out wastewater treatment, has following steps；1. iron content waste water enters regulating reservoir, regulating water quality, water and pH value by regulating reservoir water inlet pipe；2. the waste water after regulation enters reduction reaction pond (1), reducing agent addition metering system (1-2) addition reducing agent bisulfite Sodium, reduction reaction pond agitator (1-3) are stirred to waste water, the ferric ion in waste water are reduced into out-phase knot easily occurs Brilliant ferrous ion；3. the waste water after reduction reaction enters knot by reduction reaction pond outlet pipe (1-4) and crystalline deposit pond water inlet pipe (2-3) Crystalline region (2-1), crystallization derivant addition metering system (2-4) addition crystallization derivant, crystal region agitator (2-5) enter to waste water Row is stirred；4. and then waste water enters the waste water runner of settling zone, crystallization reaction, crystalline deposit pond three phase separator (2-7) occur for waste water The separation of waste water and solid is realized, sediment sinks to the bottom of settling zone under gravity, passes through the sediment of bottom Drain valve (2-9) is discharged, and the waste water after precipitation enters to become a mandarin by crystalline deposit pond overfalling weir (2-8) and crystalline deposit pond outlet pipe Sand filter water inlet pipe (3-1)；5. waste water enters the bottom in quicksand filter tank, quicksand by quicksand filter tank water inlet pipe (3-1), quicksand filter tank water distributor (3-2) Filter tank water distributor (3-2) realizes water distribution uniformity, and waste water enters sand filtration area, and the pollutant in waste water is further filtered, and is then given up Water passes through sand filtration area, is flowed out by sand filtration area overfalling weir (3-7) and quicksand filter tank outlet pipe, into tank；The air blast of quicksand filter tank Air-flow caused by machine (3-4) drives the Sha Heshui in washed-out sand area to flow up, while sand is rinsed, and then sand and water enter Sand water sedimentation Disengagement zone, because sand is different with the proportion of water, fine deposition goes down and flows into sand filtration by returning sand passage (3-6) Area, realizes the movement of fine sand in sand filtration area constantly from top to bottom, and the water in sand water sedimentation Disengagement zone passes through washed-out sand area overfalling weir (3-5) and washed-out sand water discharge spout are reprocessed into crystalline deposit pond；6. the effluent reuse of tank or further processing；7. sediment caused by crystalline deposit pond is concentrated, dehydration recycles.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108947147A (en) * | 2018-08-30 | 2018-12-07 | 常州大学 | A kind of DMF advanced waste treatment apparatus |
| CN109133526A (en) * | 2018-09-25 | 2019-01-04 | 常州大学 | A kind of phenol resin production waste water processing unit |
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