CN104860448A - System and method for treating lead-containing and phosphorus-containing wastewater - Google Patents
System and method for treating lead-containing and phosphorus-containing wastewater Download PDFInfo
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- CN104860448A CN104860448A CN201510316181.3A CN201510316181A CN104860448A CN 104860448 A CN104860448 A CN 104860448A CN 201510316181 A CN201510316181 A CN 201510316181A CN 104860448 A CN104860448 A CN 104860448A
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Abstract
The invention discloses a system for treating lead-containing and phosphorus-containing wastewater. The system comprises a wastewater homogenizing tank, a filter device, a primary pH regulating tank, a polyaluminum chloride reaction tank, a polyacrylamide reaction tank, an inclined-plate settling tank and a secondary pH regulating tank, all of which are orderly connected together from front to back, wherein the wastewater homogenizing tank comprises a lead-containing wastewater homogenizing tank and a phosphorus-containing wastewater homogenizing tank which are connected in parallel with each other. The invention also discloses a method for treating lead-containing and phosphorus-containing wastewater. The method has the advantages of simple process, good wastewater purification effect, effective treatment on sludge, and separate homogenization and collection of the lead-containing wastewater and the phosphorus-containing wastewater.
Description
Technical field
The present invention relates to technical field of waste water processing, particularly relate to a kind of system and the method thereof that process lead waste water and phosphorus-containing wastewater.
Background technology
Lead is one of metal of using the earliest of the mankind, and be also one of conventional element of industry, it is a kind of nondegradable environmental pollutant, directly or indirectly enters human body, damage human body by different approaches.If lead waste water does not process in time, bring great harm must to environment and society.Body eutrophication can be accelerated containing excessive phosphorus in waste water, cause the plant excessive multiplication such as algae in water, cause the phenomenon such as " blue-green algae ", " red algae ", along with the death of algae is with rotten, they can be used by microbial food, cause the amount reproduction of microorganism, the amount reproduction of microorganism can cause lethal challenge to other biological in local fish and water again.Meanwhile, the excessive emissions of phosphorus also can cause the eubiosis of water surrounding to be destroyed, and water body oneself detergent power weakens, and in water body, the wadding of food chain disorderly, and deteriorating water quality, water supply cost improves, lakes and swamps etc.
At present, as shown in Figure 1, this treatment process has the following disadvantages in the technical process of Removal of Phosphorus in Wastewater and lead waste water:
(1) leaded, phosphorus-containing wastewater fails to accomplish separately process, and process specific aim is poor, and processing efficiency is low;
(2) equalizing tank adopts simple sheet alkali dissolution mode, unreasonable allocation, increases and with the addition of operation complexity, improve running cost and risk;
(3) in view of P
b 2+, PO
3- 4solubleness in water is to the susceptibility of pH value, and existing pollution reducing facility fails to adopt effective technique means to control reaction process, causes production operation to carry out;
(4) the quartz sand filtration link treatment effect in existing technique is not remarkable, and technique needs to be simplified;
(5) existing installation is without effective sludge disposal equipment and means, causes production run to carry out.
Summary of the invention
For the deficiencies in the prior art, the present invention discloses that a kind of technique is simple, purification of waste water is effective, can effective lignin-sludge carry out the process lead waste water of separate collection and the system of phosphorus-containing wastewater and method thereof to lead waste water, phosphorus-containing wastewater.
The present invention solves the problems of the technologies described above by the following technical solutions: a kind of system processing lead waste water and phosphorus-containing wastewater, and described system comprises waste water homogeneous pond, filtration unit, one-level pH regulator pond, polymeric aluminium reaction pond, polyacrylamide reaction tank, inclined-plate clarifying basin and secondary pH regulator pond.Described waste water homogeneous pond, described filtration unit, described one-level pH regulator pond, described polymeric aluminium reaction pond, described polyacrylamide reaction tank, described inclined-plate clarifying basin and described secondary pH regulator pond are connected from front to back successively.Described waste water homogeneous pond comprises lead waste water homogeneous pond and phosphorus-containing wastewater homogeneous pond; Described lead waste water homogeneous pond and described phosphorus-containing wastewater homogeneous pond are in being arranged in parallel.Sanitary wastewater tentatively filters by described filtration unit, described filtration unit comprises grating tank, grid, transport unit, handgrip, sealed strip and garbage cleaning device, described grid is arranged in described grating tank, described transport unit is arranged on the water outlet of described grating tank, the solid refuse filtered out is carried out transmission and be separated in waste water.The delivery direction that described handgrip is parallel to described transport unit is successively set on described transport unit.Gap between described transport unit and described solid-liquid separation tank is covered by described sealed strip; Described garbage cleaning device is arranged on the end of described transport unit.
Preferably, described handgrip comprises connecting rod and drag head, and described connecting rod is fixed on described transmission mechanism, and described connecting rod and described drag head adopt and removably connect.Described tightness system is rubber pad, described rubber pad all adopt rivet interlacement with the outer rim of described transmission mechanism and the pool wall of described grating tank.
Preferably, pH controller is respectively arranged with in described one-level pH regulator pond and described secondary pH regulator pond.
Preferably, described one-level pH regulator pond, described polymeric aluminium reaction pond, described polyacrylamide reaction tank and described secondary pH regulator pond are epoxy glass steel structure water pond.
Preferably, all perforated pipe is established in described phosphorus-containing wastewater homogeneous pond and lead waste water homogeneous pond.
Preferably, described treatment system also comprises sludge press filtration equipment, and described sludge press filtration equipment carries out processed in order to the mud be precipitated out by described settling tank.
As a kind of method processing lead waste water and phosphorus-containing wastewater of above-mentioned any one, it is characterized in that, the treating method comprises following steps:
1) phosphorus-containing wastewater is collected in phosphorus-containing wastewater homogeneous pond, lead waste water is collected in lead waste water homogeneous pond;
2) when Removal of Phosphorus in Wastewater, that opens phosphorus-containing wastewater homogeneous pond goes out sluice, is flowed into by phosphorus-containing wastewater in grating tank, filters; The solid refuse filtered out is sent to garbage cleaning device place by transport unit, and the phosphorus-containing wastewater after filtration enters in one-level pH regulator pond; The pH value regulating phosphorus-containing wastewater in one-level pH regulator pond is 8-10, and drop into the calcium chloride of 4.36g/L-21.33g/L, carry out precipitation process to the phosphorus-containing wastewater in pH regulator pond, the phosphorus-containing wastewater after precipitation process enters in polymeric aluminium reaction pond; When processing lead waste water, that opens phosphorus-containing wastewater homogeneous pond goes out sluice, is flowed into by phosphorus-containing wastewater in grating tank, filters; The solid refuse filtered out is sent to garbage cleaning device place by transport unit, and the lead waste water after filtration enters in one-level pH regulator pond; The pH value regulating lead waste water in one-level pH regulator pond is 6.2-9.8, and carry out precipitation process to the lead waste water in one-level pH regulator pond, the lead waste water after precipitation process enters in polymeric aluminium reaction pond;
3) drop into the polymerize aluminum chloride of (200-600) ppm in polymeric aluminium reaction pond, flocculation sediment is carried out to the waste water containing phosphorus, lead wherein, and processed waste water is entered in polyacrylamide reaction tank;
4) drop into the polyacrylamide of (400-800) ppm in polyacrylamide reaction tank, flocculation sediment is again carried out to the waste water entered wherein, and the waste water after process is entered in inclined-plate clarifying basin;
5) mud precipitated in inclined-plate clarifying basin is carried to carry out dewatering to sludge press filtration equipment, press filtration, and to dispose as danger is useless; Water after precipitation is entered in secondary pH regulator pond;
6) pH value regulating secondary pH regulator pond is 7.2-8.3, carries out neutralizing treatment to the water entered wherein;
7) water after neutralizing treatment is discharged or reuse.
Preferably: described step 2), when Removal of Phosphorus in Wastewater, the pH value regulating phosphorus-containing wastewater in one-level pH regulator pond is 8.2, drops into the calcium chloride of 17.33g/L; When processing lead waste water, the pH value regulating lead waste water in one-level pH regulator pond is 9.3; Described step 3) in the input amount of polymerize aluminum chloride be 400ppm; Describedly state step 4) in the input of polyacrylamide be 630ppm; Described step 6) in the pH value in secondary pH regulator pond be 7.6.
Preferably, described step 2) in, when Removal of Phosphorus in Wastewater, the pH value regulating phosphorus-containing wastewater in one-level pH regulator pond is 8.2, drops into the calcium chloride of 17.33g/L; When processing lead waste water, the pH value regulating lead waste water in one-level pH regulator pond is 8.7; Described step 3) in the input amount of polymerize aluminum chloride be 400ppm; Describedly state step 4) in the input of polyacrylamide be 630ppm; Described step 6) in the pH value in secondary pH regulator pond be 7.6.
Preferably, the alkali added in described one-level pH regulator pond and described secondary pH regulator pond is the one of sodium hydroxide or potassium hydroxide, and the acid of interpolation is the one of sulfuric acid, hydrochloric acid, nitric acid.
The invention has the advantages that: by lead waste water and phosphorus-containing wastewater being carried out separate collection in the lead waste water homogeneous pond with perforated pipe and phosphorus-containing wastewater homogeneous pond, preventing from depositing reaching with even water quality and collecting homogenizing of storage.Enter separately in one-level pH regulator pond again, for the pH value in different waste water (lead waste water or phosphorus-containing wastewater) timely adjustment ponds and reactant, the lead in this waste water or phosphorus are settled out, play the effect of rough purification.By the phosphorous waste water after rough purification and lead waste water are carried out twice flocculation treatment by PAC (polymerize aluminum chloride) reaction tank and PAM (polyacrylamide) reaction tank successively, waste water is purified further.Again waste water is entered in inclined-plate clarifying basin, precipitate, and by the mud that is settled out by after the dehydration of sludge press filtration equipment, press filtration, as the useless process of danger, avoid causing because of the sedimentation of mud production run to carry out.Meanwhile, the water after precipitation enters in Secondary Control, carries out the readjustment of pH value, completes purifying treatment.After process, in the water of discharge or reuse, total phosphorous is lower than 1.5mg/L, and plumbous content, lower than 0.8mg/L, meets grade III Standard in " integrated wastewater discharge standard ".By arranging pH controller respectively in one-level pH regulator pond and secondary pH regulator pond, play the object of on-line monitoring, the potential of hydrogen of stabilizing water quality.
Accompanying drawing explanation
Fig. 1 is the technical process of prior art Removal of Phosphorus in Wastewater and lead waste water.
Fig. 2 is the process flow sheet of the embodiment of the present invention 1.
Fig. 3 is the structural representation of filtration unit in the embodiment of the present invention 1.
Fig. 4 is the structural representation of drag head in the embodiment of the present invention 1.
Fig. 5 is the structural representation of cap in the embodiment of the present invention 1.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
Embodiment 1
As in Figure 2-4, a kind of system processing lead waste water and phosphorus-containing wastewater of the present embodiment, comprises waste water homogeneous pond 1, filtration unit 2, one-level pH regulator pond 3, polymeric aluminium reaction pond 4, polyacrylamide reaction tank 5, inclined-plate clarifying basin 8 and secondary pH regulator pond 6.Described waste water homogeneous pond 1, described filtration unit 2, described one-level pH regulator pond 3, described polymeric aluminium reaction pond 4, described polyacrylamide reaction tank 5, inclined-plate clarifying basin 8 and described secondary pH regulator pond 6 are connected from front to back successively.Described waste water homogeneous pond 1 comprises lead waste water homogeneous pond 11 and phosphorus-containing wastewater homogeneous pond 12.Described lead waste water homogeneous pond 11 and described phosphorus-containing wastewater homogeneous pond 12 are in being arranged in parallel.Sanitary wastewater tentatively filters by described filtration unit 2, and described filtration unit 2 comprises grating tank 21, grid 22, transport unit 23, handgrip 24, string rubber 25 and garbage cleaning device 26.Described grid 22 is arranged in described grating tank 21, and the initiating terminal of described transport unit 3 is arranged on the water outlet of described grating tank 21, the solid refuse filtered out is carried out transmission and be separated in waste water.The delivery direction that described handgrip 24 is parallel to described transport unit 23 is successively set on described transport unit 23.Gap between described transport unit 23 and described grating tank 21 is covered by described string rubber 25.Described garbage cleaning device 26 is arranged on the end of described transport unit 23.
Described handgrip 24 comprises connecting rod 241, drag head 242 and cap 243, described connecting rod 241 offers groove, offer internal thread in described groove, the coupling end of described drag head 242 and the coupling end of described cap 24 all offer the outside screw suitable with described internal thread.Described string rubber 25 all adopts rivet interlacement with the outer rim of described transmission mechanism 23 and the pool wall of described grating tank 21.
PH controller 7 is respectively arranged with in described one-level pH regulator pond 3 and described secondary pH regulator pond 6.Described one-level pH regulator pond 3, described polymeric aluminium reaction pond 4, described polyacrylamide reaction tank 5 and described secondary pH regulator pond 6 are epoxy glass steel structure water pond.All establish perforated pipe in described phosphorus-containing wastewater homogeneous pond and lead waste water homogeneous pond, prevent alluvial with even water quality.Described treatment system also comprises sludge press filtration equipment 9, and described sludge press filtration equipment 9 carries out processed in order to the mud be precipitated out by described inclined-plate clarifying basin 8.
The treatment process of the present embodiment comprises the following steps:
1) phosphorus-containing wastewater is collected in phosphorus-containing wastewater homogeneous pond 12, lead waste water is collected in lead waste water homogeneous pond 11;
2) when Removal of Phosphorus in Wastewater, that opens phosphorus-containing wastewater homogeneous pond 12 goes out sluice, is flowed into by phosphorus-containing wastewater in grating tank 21, filters; The solid refuse filtered out is sent to garbage cleaning device 26 place by transport unit 23, and the phosphorus-containing wastewater after filtration enters in one-level pH regulator pond 3; The pH value regulating phosphorus-containing wastewater is 8, and drop into the calcium chloride of 4.36g/L, carry out precipitation process to the phosphorus-containing wastewater in one-level pH regulator pond 3, the phosphorus-containing wastewater after precipitation process enters in polymeric aluminium reaction pond 4; When processing lead waste water, that opens lead waste water homogeneous pond 11 goes out sluice, lead waste water is flowed in grating tank 21, filters; The solid refuse filtered out is sent to garbage cleaning device 26 place by transport unit 23, and the lead waste water after filtration enters in one-level pH regulator pond 3; The pH value regulating lead waste water in one-level pH regulator pond 3 is 6.2, and carry out precipitation process to the lead waste water in one-level pH regulator pond 1, the lead waste water after precipitation process enters in polymeric aluminium reaction pond 4;
3) drop into the polymerize aluminum chloride of 200ppm in polymeric aluminium reaction pond 4, flocculation sediment is carried out to the waste water containing phosphorus, lead wherein, and processed waste water is entered in polyacrylamide reaction tank 5;
4) drop into the polyacrylamide of 400ppm in polyacrylamide reaction tank 5, flocculation sediment is again carried out to the waste water entered wherein, and the waste water after process is entered in inclined-plate clarifying basin 8;
5) mud of precipitation in inclined-plate clarifying basin 8 is carried to carry out dewatering to sludge press filtration equipment 9, press filtration, and to dispose as danger is useless; Water after precipitation is entered in secondary pH regulator pond 6;
6) pH value regulating secondary pH regulator pond is 7.2, carries out neutralizing treatment to the water entered wherein;
7) water after neutralizing treatment is discharged or reuse.
The alkali added in described one-level pH regulator pond 3 and described secondary pH regulator pond 6 is sodium hydroxide, and the acid of interpolation is sulfuric acid.
After process, the total phosphorous of discharge or reuse water is 1.31mg/L, and plumbous content is 0.72mg/L.
Embodiment 2
The treatment system of the present embodiment as described in Example 1.The treatment process of the present embodiment of the present embodiment comprises the following steps:
1) phosphorus-containing wastewater is collected in phosphorus-containing wastewater homogeneous pond, lead waste water is collected in lead waste water homogeneous pond;
2) when Removal of Phosphorus in Wastewater, that opens phosphorus-containing wastewater homogeneous pond goes out sluice, is flowed into by phosphorus-containing wastewater in grating tank, filters; The solid refuse filtered out is sent to garbage cleaning device place by transport unit, and the phosphorus-containing wastewater after filtration enters in one-level pH regulator pond; The pH value regulating phosphorus-containing wastewater is 8.2, and drop into the calcium chloride of 17.33g/L, carry out precipitation process to the phosphorus-containing wastewater in one-level pH regulator pond, the phosphorus-containing wastewater after precipitation process enters in polymeric aluminium reaction pond; When processing lead waste water, that opens lead waste water homogeneous pond goes out sluice, lead waste water is flowed in grating tank, filters; The solid refuse filtered out is sent to garbage cleaning device place by transport unit, and the lead waste water after filtration enters in one-level pH regulator pond; The pH value regulating lead waste water in one-level pH regulator pond is 9.3, and carry out precipitation process to the lead waste water in one-level pH regulator pond, the lead waste water after precipitation process enters in polymeric aluminium reaction pond;
3) drop into the polymerize aluminum chloride of 400ppm in polymeric aluminium reaction pond, flocculation sediment is carried out to the waste water containing phosphorus, lead wherein, and processed waste water is entered in polyacrylamide reaction tank;
4) drop into the polyacrylamide of 630ppm in polyacrylamide reaction tank, flocculation sediment is again carried out to the waste water entered wherein, and the waste water after process is entered in inclined-plate clarifying basin;
5) mud precipitated in inclined-plate clarifying basin is carried to carry out dewatering to sludge press filtration equipment, press filtration, and to dispose as danger is useless; Water after precipitation is entered in secondary pH regulator pond;
6) pH value regulating secondary pH regulator pond is 7.6, carries out neutralizing treatment to the water entered wherein;
7) water after neutralizing treatment is discharged or reuse.
The alkali added in described one-level pH regulator pond and described secondary pH regulator pond is sodium hydroxide, and the acid of interpolation is hydrochloric acid.
After process, the total phosphorous of discharge or reuse water is 1.08mg/L, and plumbous content is 0.62mg/L.
Embodiment 3
The treatment system of the present embodiment as described in Example 1.The treatment process of the present embodiment of the present embodiment comprises the following steps:
1) phosphorus-containing wastewater is collected in phosphorus-containing wastewater homogeneous pond, lead waste water is collected in lead waste water homogeneous pond;
2) when Removal of Phosphorus in Wastewater, that opens phosphorus-containing wastewater homogeneous pond goes out sluice, is flowed into by phosphorus-containing wastewater in grating tank, filters; The solid refuse filtered out is sent to garbage cleaning device place by transport unit, and the phosphorus-containing wastewater after filtration enters in one-level pH regulator pond; The pH value regulating phosphorus-containing wastewater is 10, and drop into the calcium chloride of 21.33g/L, carry out precipitation process to the phosphorus-containing wastewater in one-level pH regulator pond, the phosphorus-containing wastewater after precipitation process enters in polymeric aluminium reaction pond; When processing lead waste water, that opens lead waste water homogeneous pond goes out sluice, lead waste water is flowed in grating tank, filters; The solid refuse filtered out is sent to garbage cleaning device place by transport unit, and the lead waste water after filtration enters in one-level pH regulator pond; The pH value regulating lead waste water in one-level pH regulator pond is 9.8, and carry out precipitation process to the lead waste water in one-level pH regulator pond, the lead waste water after precipitation process enters in polymeric aluminium reaction pond;
3) drop into the polymerize aluminum chloride of 600ppm in polymeric aluminium reaction pond, flocculation sediment is carried out to the waste water containing phosphorus, lead wherein, and processed waste water is entered in polyacrylamide reaction tank;
4) drop into the polyacrylamide of 800ppm in polyacrylamide reaction tank, flocculation sediment is again carried out to the waste water entered wherein, and the waste water after process is entered in inclined-plate clarifying basin;
5) mud precipitated in inclined-plate clarifying basin is carried to carry out dewatering to sludge press filtration equipment, press filtration, and to dispose as danger is useless; Water after precipitation is entered in secondary pH regulator pond;
6) pH value regulating secondary pH regulator pond is 8.3, carries out neutralizing treatment to the water entered wherein;
7) water after neutralizing treatment is discharged or reuse.
The alkali added in described one-level pH regulator pond and described secondary pH regulator pond is potassium hydroxide, and the acid of interpolation is nitric acid.
After process, the total phosphorous of discharge or reuse water is 1.03mg/L, and plumbous content is 0.59mg/L.
Integrated embodiment 1, embodiment 2 and embodiment 3, compare embodiment 1, under the formula of embodiment 2, processes, can obtain good decontamination effect improving better; Under the formula of embodiment 3, process, its decontamination effect improving promotes not obvious, causes the waste for the treatment of agent.
The foregoing is only the preferred embodiment of the invention; not in order to limit the invention; the any amendment done within all spirit in the invention and principle, equivalently to replace and improvement etc., within the protection domain that all should be included in the invention.
Claims (9)
1. process a system for lead waste water and phosphorus-containing wastewater, it is characterized in that, described system comprises waste water homogeneous pond, filtration unit, one-level pH regulator pond, polymeric aluminium reaction pond, polyacrylamide reaction tank, inclined-plate clarifying basin and secondary pH regulator pond; Described waste water homogeneous pond, described filtration unit, described one-level pH regulator pond, described polymeric aluminium reaction pond, described polyacrylamide reaction tank, described inclined-plate clarifying basin and described secondary pH regulator pond are connected from front to back successively; Described waste water homogeneous pond comprises lead waste water homogeneous pond and phosphorus-containing wastewater homogeneous pond; Described lead waste water homogeneous pond and described phosphorus-containing wastewater homogeneous pond are in being arranged in parallel; Sanitary wastewater tentatively filters by described filtration unit, and described filtration unit comprises grating tank, grid, transport unit, handgrip, sealed strip and garbage cleaning device; Described grid is arranged in described grating tank, and described transport unit is arranged on the water outlet of described grating tank, the solid refuse filtered out is carried out transmission and be separated in waste water; The delivery direction that described handgrip is parallel to described transport unit is successively set on described transport unit; Gap between described transport unit and described solid-liquid separation tank is covered by described sealed strip; Described garbage cleaning device is arranged on the end of described transport unit.
2. a kind of system processing lead waste water and phosphorus-containing wastewater according to claim 1, it is characterized in that, described handgrip comprises connecting rod and drag head, and described connecting rod is fixed on described transmission mechanism, and described connecting rod and described drag head adopt and removably connect; Described tightness system is rubber pad, described rubber pad all adopt rivet interlacement with the outer rim of described transmission mechanism and the pool wall of described grating tank.
3. a kind of system processing lead waste water and phosphorus-containing wastewater according to claim 1, is characterized in that, is respectively arranged with pH controller in described one-level pH regulator pond and described secondary pH regulator pond.
4. a kind of lead waste water according to claim 1, phosphorus-containing wastewater separate treatment system, it is characterized in that, described one-level pH regulator pond, described polymeric aluminium reaction pond, described polyacrylamide reaction tank and described secondary pH regulator pond are epoxy glass steel structure water pond.
5. a kind of system processing lead waste water and phosphorus-containing wastewater according to claim 1, is characterized in that, all establishes perforated pipe in described phosphorus-containing wastewater homogeneous pond and lead waste water homogeneous pond.
6. a kind of system processing lead waste water and phosphorus-containing wastewater according to claim 1, it is characterized in that, described treatment system also comprises sludge press filtration equipment, and described sludge press filtration equipment carries out processed in order to the mud be precipitated out by described settling tank.
7. a kind of method processing lead waste water and phosphorus-containing wastewater according to any one of claim 1-6, is characterized in that, the treating method comprises following steps:
1) phosphorus-containing wastewater is collected in phosphorus-containing wastewater homogeneous pond, lead waste water is collected in lead waste water homogeneous pond;
2) when Removal of Phosphorus in Wastewater, that opens phosphorus-containing wastewater homogeneous pond goes out sluice, is flowed into by phosphorus-containing wastewater in grating tank, filters; The solid refuse filtered out is sent to garbage cleaning device place by transport unit, and the phosphorus-containing wastewater after filtration enters in one-level pH regulator pond; The pH value regulating phosphorus-containing wastewater in one-level pH regulator pond is 8-10, and drop into the calcium chloride of 4.36g/L-21.33g/L, carry out precipitation process to the phosphorus-containing wastewater in pH regulator pond, the phosphorus-containing wastewater after precipitation process enters in polymeric aluminium reaction pond; When processing lead waste water, that opens phosphorus-containing wastewater homogeneous pond goes out sluice, is flowed into by phosphorus-containing wastewater in grating tank, filters; The solid refuse filtered out is sent to garbage cleaning device place by transport unit, and the lead waste water after filtration enters in one-level pH regulator pond; The pH value regulating lead waste water in one-level pH regulator pond is 6.2-9.8, and carry out precipitation process to the lead waste water in one-level pH regulator pond, the lead waste water after precipitation process enters in polymeric aluminium reaction pond;
3) drop into the polymerize aluminum chloride of (200-600) ppm in polymeric aluminium reaction pond, flocculation sediment is carried out to the waste water containing phosphorus, lead wherein, and processed waste water is entered in polyacrylamide reaction tank;
4) drop into the polyacrylamide of (400-800) ppm in polyacrylamide reaction tank, flocculation sediment is again carried out to the waste water entered wherein, and the waste water after process is entered in inclined-plate clarifying basin;
5) mud precipitated in inclined-plate clarifying basin is carried to carry out dewatering to sludge press filtration equipment, press filtration, and to dispose as danger is useless; Water after precipitation is entered in secondary pH regulator pond;
6) pH value regulating secondary pH regulator pond is 7.2-8.3, carries out neutralizing treatment to the water entered wherein;
7) water after neutralizing treatment is discharged or reuse.
8. a kind of method processing lead waste water and phosphorus-containing wastewater according to claim 7, is characterized in that, described step 2) in, when Removal of Phosphorus in Wastewater, the pH value regulating phosphorus-containing wastewater in one-level pH regulator pond is 8.2, drops into the calcium chloride of 17.33g/L; When processing lead waste water, the pH value regulating lead waste water in one-level pH regulator pond is 9.3; Described step 3) in the input amount of polymerize aluminum chloride be 400ppm; Describedly state step 4) in the input of polyacrylamide be 630ppm; Described step 6) in the pH value in secondary pH regulator pond be 7.6.
9. a kind of method processing lead waste water and phosphorus-containing wastewater according to claim 1, it is characterized in that, the alkali added in described one-level pH regulator pond and described secondary pH regulator pond is the one of sodium hydroxide or potassium hydroxide, and the acid of interpolation is the one of sulfuric acid, hydrochloric acid, nitric acid.
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| CN107628710A (en) * | 2017-11-07 | 2018-01-26 | 长沙埃比林环保科技有限公司 | A kind of method of inorganic coacervation processing lead waste water |
| CN107640845A (en) * | 2016-07-22 | 2018-01-30 | 天津市茂联科技有限公司 | A kind of waste water dephosphorization method under alkalescence condition |
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