CN209507837U - A kind of circulating reflux deep phosphorous removal device - Google Patents
A kind of circulating reflux deep phosphorous removal device Download PDFInfo
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- CN209507837U CN209507837U CN201920220569.7U CN201920220569U CN209507837U CN 209507837 U CN209507837 U CN 209507837U CN 201920220569 U CN201920220569 U CN 201920220569U CN 209507837 U CN209507837 U CN 209507837U
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- mixing pit
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Abstract
The utility model provides a kind of circulating reflux deep phosphorous removal device, including mixing pit, reaction tank, three heavy ponds, medicine system, sludge refluxing apparatus, the mixing pit, reaction tank, three heavy ponds are sequentially connected with by pipeline, the mixing pit is divided into mixing pit a, two lattice of mixing pit b, the two is linked in sequence, the medicine system is made of acid, alkali chemicals dosing plant, flocculant chemicals dosing plant and flocculation aid chemicals dosing plant, and three heavy ponds are connected by the sludge refluxing apparatus by pipeline with reaction tank.Its novelty is embodied in: the chemical sludge of formation being carried out reflux utilization, first takes full advantage of and incomplete dephosphorization agent is excessively added or reacted in dephosphorization reaction process；Second it is caught using the intensive net of high concentration chemistry floc sludge, suction-operated is removed P, COD that primary reaction is omitted again.
Description
Technical field
The utility model belongs to field of waste water treatment, and in particular to a kind of circulating reflux deep phosphorous removal device.
Background technique
Phosphorus is a kind of essential element of organism, however if when phosphorus content in water body is more than a certain amount of, not only
It can threaten to human health while can also cause damages to aquatile.Some researches show that when the content of total phosphorus in water
More than 0.2mg/L, algae excessive propagation can promote, destroy the balance of original water body, cause eutrophication pollution.In down-stream
In treatment plant, A is often used2/ O technique carries out biological phosphate-eliminating, but raw in small-sized sewage treatment plant or distributing rural area
In sewage disposal device living, which is difficult to operate.
Based on this, chemical precipitation method is the effective ways of current Removal of Phosphorus in Wastewater.Chemical precipitating agent mainly have aluminium ion,
The equilibrium constant of iron ion and calcium ion, the hydroxyapatite that wherein lime and phosphate radical generate is maximum, and phosphor-removing effect is best.It throws
Add lime in phosphorus-containing wastewater, calcium ion reacts generation precipitating with phosphate radical, it reacts as follows:
Main reaction: Ca2++7OH-+3H3PO4 -=Ca5(OH)(PO4)3↓+6H2O
Side reaction: Ca2++OH-=Ca(OH)2↓
In China, most of rural area is not at present handled sewage, but takes the mode of nearest discharge into water,
The a large amount of water pollutions in rural area are had resulted in, risk is generated to rural environment, residents ' health.If taking existing town sewage pipe network
The mode for collecting centralized processing handles country sewage, and since analysis is wide and disperses, the reasons such as single-point sewage quantity is few are caused
Pipe network investment it is huge, be unreasonable from feasibility, it is therefore necessary to establish decentralized type sewage processing unit to country sewage into
Row processing.It is currently used at most, also most economical effective sewage water treatment method is biochemical method.Biochemical method removes organic matter and nitrogen
Except effect is obvious and easily controllable, but to the removal effect of phosphorus due to the limitation of process conditions, it is difficult to meet discharge
The requirement of index.
It is generallyd use in decentralized type sewage processing unit at present and adds chemical dosing dephosphorization apparatus after biochemical treatment.Change
Dosing dephosphorization apparatus is learned to be made of dosing pump, mixing apparatus, dosing tank, solid-liquid separating equipment etc..Configured with certain in dosing tank
The medicament of concentration, is added in water pipe by dosing pump, is come into full contact with using mixing apparatus with water and is generated chemical reaction after mixing,
Phosphate radical in water forms the substance of slightly solubility, is then separated by solid-liquid separating equipments such as precipitating, eddy flows, to reduce
The concentration of phosphorus in water, reaches discharge standard.However it has the drawback that due to chemical action to be generated, it is necessary to use
The mode added is measured, a large amount of consumption of medicament are on the one hand caused, on the other hand generates a large amount of chemical sludge, sludge transhipment is easy
Cause secondary pollution；Operating cost caused by the disposition of adding of agent and sludge is high.
Utility model content
In view of the deficiencies of the prior art, the purpose of this utility model is to provide a kind of deep phosphorous removals efficiently, inexpensive
Device.
To achieve the above object, the utility model provides a kind of circulating reflux deep phosphorous removal device, and novelty embodies
: the chemical sludge of formation is subjected to reflux utilization, is first taken full advantage of in dephosphorization reaction process and is excessively added or react not
Complete dephosphorization agent；Second it is caught using the intensive net of high concentration chemistry floc sludge, primary reaction is omitted in suction-operated
Phosphorus (P), COD (COD) are removed again.
To realize the purpose of this utility model, the utility model provides a kind of circulating reflux deep phosphorous removal device, including mixed
Pond, reaction tank, three heavy ponds, sludge recirculation system, medicine system are closed, the mixing pit, reaction tank, three heavy ponds are sequentially connected by pipeline
It connects, the mixing pit is divided into mixing pit a, two lattice of mixing pit b, and the two is linked in sequence, and the medicine system is filled by acid, alkali dosing
Set, flocculant chemicals dosing plant and flocculation aid chemicals dosing plant composition, the sludge recirculation system by pipeline by three heavy ponds with react
Pond is connected.
Further improvement lies in that: the soda acid chemicals dosing plant is connected by pipeline with mixing pit a；
Further improvement lies in that: the flocculant chemicals dosing plant is connected by pipeline with mixing pit a.
Further improvement lies in that: the flocculation aid chemicals dosing plant is connected by pipeline with mixing pit b.
Further improvement lies in that: agitating device a, stirring dress are respectively equipped in the mixing pit a, mixing pit b and reaction tank
Set b and agitating device c.
Compared with prior art, the utility model has the beneficial effects that:
1. the utility model makes full use of the excessive dephosphorization agent in the chemical sludge of generation, 30% adding of agent is saved, is dropped
Low operating cost.
2. the utility model dephosphorization process effect is good, the content of P is lower than 0.5mg/L in final outflow water.
3. the dephosphorization process of the utility model also has good removal effect to COD, waste water COD can be dropped by 100mg/L
To 20 ~ 40mg/L, stable water outlet reaches level-one A standard.
4. water outlet after conventional chemical dephosphorization is since the Optimal pH of dephosphorization agent is acid or alkalinity, water outlet need to be adjusted pH to
It can be discharged after 6-9, and the phosphorus removing method of the utility model treated wastewater pH is stablized in 6-6.5, and addition acid, alkali are no longer needed to
PH is adjusted, medicament expense is saved.
5. the phosphorus removing method chemical sludge yield of the utility model reduces 30 ~ 70%, the minimizing of sludge is realized.
Detailed description of the invention
A kind of Fig. 1 circulating reflux deep phosphorous removal technique flow diagram provided by the utility model.
A kind of Fig. 2 circulating reflux advanced treatment apparatus figure provided by the utility model
Wherein: 1- mixing pit, 2- reaction tank, 3- tri- sink pond, 4- medicine system, 5- sludge refluxing apparatus, 101- mixing pit
A, 102- mixing pit b, 103- agitating device a, 104- agitating device b, 201- agitating device c, 401- soda acid chemicals dosing plant, 402-
Flocculant chemicals dosing plant, 403- flocculation aid chemicals dosing plant.
Specific embodiment
In order to deepen the understanding to the utility model, the utility model is further described below in conjunction with embodiment,
The present embodiment is only used for explaining the utility model, does not constitute the restriction to scope of protection of the utility model.
According to Fig.2, the present embodiment proposes a kind of circulating reflux deep phosphorous removal device, including mixing pit 1, reaction tank
2, three heavy ponds 3, medicine system 4, sludge refluxing apparatus 5, mixing pit 1, reaction tank 2, three heavy ponds 3 are sequentially connected with by pipeline, mixing
Pond 1 is divided to for mixing pit a101, two lattice of mixing pit b102, and the two is linked in sequence, and medicine system 4 is by soda acid chemicals dosing plant 401, flocculation
Agent chemicals dosing plant 402 and flocculation aid chemicals dosing plant 403 form, and sludge refluxing apparatus 5 passes through pipeline for three heavy ponds 3 and reaction tank 2
It is connected；Soda acid chemicals dosing plant 401 is connected by pipeline with mixing pit a101；Flocculant chemicals dosing plant 402 is by pipeline and mixes
Pond a101 is closed to be connected；Flocculation aid chemicals dosing plant 403 is connected by pipeline with mixing pit b102；Mixing pit a101, mixing pit b102
With agitating device a103, agitating device b104 and agitating device c201 are respectively equipped in reaction tank 2.
Working principle: a kind of circulating reflux deep phosphorous removal device, the waste water after secondary biochemical successively pass through mixing pit a, mixed
Pond b, reaction tank and three heavy ponds are closed, standard water discharge discharge or reuse after chemical dephosphorization.After waste water adjusts pH in mixing pit a
It quickly mixes with dephosphorization agent, is mixed in mixing pit b with flocculation aid, formed under the collective effect of dephosphorization agent and flocculation aid tiny
Floccule body.Mixing pit b water outlet enters reaction tank and is sufficiently reacted, and tiny wadding body is condensed into big flocculating body gradually in order to heavy
It forms sediment.Waste water completes flocculation process after dosing, mixing, reaction, and reaction tank water outlet enters three heavy ponds and carries out mud-water separation.Three
Sinking pool effluent can qualified discharge or reuse, three heavy pond sludge a part are back to reaction tank, and another part is transported outward after processing.
Experimental example 1
The secondary biochemical effluent of certain wheaten starch processing factory, P concentration is 10mg/L in waste water, and COD 90mg/L, SS are
60mg/L, waste water water are 3000m3/d。
Dephosphorization is carried out using circulating reflux deep phosphorous removal technique described in the utility model, comprising the following steps:
(1) secondary clarifier effluent after aerobic treatment is introduced into mixing pit a, adds in mixing pit a after adjusting pH
Enter dephosphorization agent, is quickly mixed；
(2) mixing pit a water outlet enters mixing pit b, and flocculation aid is added and stirs, forms tiny wadding body；
(3) mixing pit b water outlet enters reaction tank, sufficiently reacts in reaction tank, big wadding body is condensed by tiny wadding body；
(4) reaction tank water outlet enter three heavy ponds be separated by solid-liquid separation, supernatant can direct emission, the chemical sludge in three heavy ponds
A part is back to reaction tank, and return sludge ratio 50%, another part is transported outward after processing.
The mixing pit a residence time is 15min, stirring intensity 10W/m3, the dephosphorization agent is using ferric trichloride
FeCl3, dosage 50mg/L.The mixing pit b residence time is 20min, and stirring intensity is 2 W/m3, the flocculation aid is
PAM, dosage 3mg/L.The reaction tank residence time is 30min, and stirring intensity is 2 W/m3。
P is 0.3mg/L in water outlet after processing, and P removal rate is 97%；COD is 38mg/L, and COD removal rate is 57.8%；SS
For 10mg/L, SS removal rate is 83.3%.
Experimental example 2
The secondary biochemical effluent of certain cornstarch processing factory, waste water water 5000m3/ d, P concentration is 6mg/L in waste water,
COD is 80mg/L.
Dephosphorization is carried out using circulating reflux deep phosphorous removal technique described in the utility model, comprising the following steps:
(1) secondary clarifier effluent after aerobic treatment is introduced into mixing pit a, adds in mixing pit a after adjusting pH
Enter dephosphorization agent, is quickly mixed；
(2) mixing pit a water outlet enters mixing pit b, and flocculation aid is added and stirs, forms tiny wadding body；
(3) mixing pit b water outlet enters reaction tank, sufficiently reacts in reaction tank, big wadding body is condensed by tiny wadding body；
(4) reaction tank water outlet enter three heavy ponds be separated by solid-liquid separation, supernatant can direct emission, the chemical sludge in three heavy ponds
A part is back to reaction tank, and return sludge ratio 60%, another part is transported outward after processing.
The mixing pit a residence time is 10min, stirring intensity 10W/m3, the dephosphorization agent is using aluminum sulfate, dosing
Amount is 65mg/L.The mixing pit b residence time is 30min, and stirring intensity is 2 W/m3, the flocculation aid helps solidifying for microorganism
Agent, dosage 4mg/L.The reaction tank residence time is 30min, and stirring intensity is 2 W/m3。
P is 0.25mg/L in water outlet after processing, and the removal rate of P is 95.8%；COD is 28mg/L, and COD removal rate is
65%。
Claims (5)
1. a kind of circulating reflux deep phosphorous removal device, which is characterized in that including mixing pit (1), reaction tank (2), three heavy ponds (3),
Medicine system (4), sludge refluxing apparatus (5), the mixing pit (1), reaction tank (2), three heavy ponds (3) are sequentially connected with by pipeline,
The mixing pit is divided into mixing pit a(101), mixing pit b(102) two lattice, the two be linked in sequence, the medicine system (4) is by acid
Alkali chemicals dosing plant (401), flocculant chemicals dosing plant (402) and flocculation aid chemicals dosing plant (403) composition, the sludge refluxing apparatus
(5) three heavy ponds (3) are connected with reaction tank (2) by pipeline.
2. a kind of circulating reflux deep phosphorous removal device according to claim 1, which is characterized in that the soda acid chemicals dosing plant
(401) it is connected by pipeline with mixing pit a(101).
3. a kind of circulating reflux deep phosphorous removal device according to claim 1, which is characterized in that the flocculant dosing dress
(402) are set to be connected by pipeline with mixing pit a(101).
4. a kind of circulating reflux deep phosphorous removal device according to claim 1, which is characterized in that the flocculation aid dosing dress
(403) are set to be connected by pipeline with mixing pit b(102).
5. a kind of circulating reflux deep phosphorous removal device according to claim 1, which is characterized in that the mixing pit a
(101), mixing pit b(102) and reaction tank (2) in be respectively equipped with agitating device a(103), agitating device b(104) and stirring dress
Set c(201).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920220569.7U CN209507837U (en) | 2019-02-21 | 2019-02-21 | A kind of circulating reflux deep phosphorous removal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920220569.7U CN209507837U (en) | 2019-02-21 | 2019-02-21 | A kind of circulating reflux deep phosphorous removal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209507837U true CN209507837U (en) | 2019-10-18 |
Family
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| CN201920220569.7U Active CN209507837U (en) | 2019-02-21 | 2019-02-21 | A kind of circulating reflux deep phosphorous removal device |
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2019
- 2019-02-21 CN CN201920220569.7U patent/CN209507837U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A circulating reflux deep phosphorus removal device Effective date of registration: 20220224 Granted publication date: 20191018 Pledgee: Ji'nan rural commercial bank Limited by Share Ltd. high tech branch Pledgor: SHANDONG LVQUAN ENVIRONMENTAL TECHNOLOGY CO.,LTD. Registration number: Y2022980001808 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230220 Granted publication date: 20191018 Pledgee: Ji'nan rural commercial bank Limited by Share Ltd. high tech branch Pledgor: SHANDONG LVQUAN ENVIRONMENTAL TECHNOLOGY CO.,LTD. Registration number: Y2022980001808 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A circulating reflux deep phosphorus removal device Effective date of registration: 20230419 Granted publication date: 20191018 Pledgee: Ji'nan rural commercial bank Limited by Share Ltd. high tech branch Pledgor: SHANDONG LVQUAN ENVIRONMENTAL TECHNOLOGY CO.,LTD. Registration number: Y2023980038466 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |