CN203568922U - Deep sewage treatment system - Google Patents
Deep sewage treatment system Download PDFInfo
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- CN203568922U CN203568922U CN201320679457.0U CN201320679457U CN203568922U CN 203568922 U CN203568922 U CN 203568922U CN 201320679457 U CN201320679457 U CN 201320679457U CN 203568922 U CN203568922 U CN 203568922U
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- sewage treatment
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- pool
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- 239000010865 sewage Substances 0.000 title claims abstract description 30
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 66
- 239000002351 wastewater Substances 0.000 claims abstract description 33
- 239000007788 liquid Substances 0.000 claims abstract description 26
- 239000000126 substance Substances 0.000 claims abstract description 26
- 239000000701 coagulant Substances 0.000 claims abstract description 23
- 235000011121 sodium hydroxide Nutrition 0.000 claims abstract description 22
- 239000010802 sludge Substances 0.000 claims abstract description 19
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000012028 Fenton's reagent Substances 0.000 claims abstract description 13
- 239000011790 ferrous sulphate Substances 0.000 claims abstract description 8
- 235000003891 ferrous sulphate Nutrition 0.000 claims abstract description 7
- 230000001590 oxidative effect Effects 0.000 claims description 30
- 238000006386 neutralization reaction Methods 0.000 claims description 13
- 239000002562 thickening agent Substances 0.000 claims description 8
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 7
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 6
- 238000004062 sedimentation Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 14
- 239000007787 solid Substances 0.000 abstract description 7
- 230000003647 oxidation Effects 0.000 abstract description 4
- 238000007254 oxidation reaction Methods 0.000 abstract description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 3
- 239000001117 sulphuric acid Substances 0.000 abstract 3
- 235000011149 sulphuric acid Nutrition 0.000 abstract 3
- 238000007872 degassing Methods 0.000 abstract 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 238000001556 precipitation Methods 0.000 abstract 1
- 241000196324 Embryophyta Species 0.000 description 22
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 7
- 239000002957 persistent organic pollutant Substances 0.000 description 6
- 239000000758 substrate Substances 0.000 description 6
- 239000000725 suspension Substances 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 5
- 239000010893 paper waste Substances 0.000 description 4
- 230000002378 acidificating effect Effects 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 3
- 229920002401 polyacrylamide Polymers 0.000 description 3
- 230000001112 coagulating effect Effects 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000003472 neutralizing effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- -1 therefore Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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- Treatment Of Water By Oxidation Or Reduction (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The utility model relates to the technical field of papermaking sewage treatment, and in particular to a deep sewage treatment system. The deep sewage treatment system structurally comprises a middle water pool, a wastewater pump, an oxidation tower, a neutralization-degasification pool, a precipitation pool, a sludge pump and a sludge concentration pool, wherein a concentrated sulphuric acid charge port and a Fenton reagent charge port are formed in the top of the oxidation tower respectively, the concentrated sulphuric acid charge port is communicated with a concentrated sulphuric acid dosing device, and the Fenton reagent charge port is communicated with a ferrous sulphate storage pool and a hydrogen peroxide storage tank respectively; a caustic soda liquid charge port and a coagulant aid charge port are formed in the top of the neutralization-degasification pool, the caustic soda liquid charge port is communicated with a caustic soda liquid dosing device, and the coagulant aid charge port is communicated with a coagulant aid dosing device. The deep sewage treatment system disclosed by the utility model is capable of controlling the CODcr (chemical oxygen demand) of the effluent to be less than 40 mg/l and controlling the suspended solid concentration to be less than 30 mg/l, thus achieving drainage standards and avoiding pollution to environment; moreover, the system is stable in running, and the whole process is simple and easy to operate, and low in investment cost.
Description
Technical field
The utility model relates to technology for the treatment of of papermaking wastewater field, particularly relates to a kind of degree of depth Sewage treatment systems.
Background technology
At present, the first place that China's paper-making industrial waste water quantity discharged and COD quantity discharged all occupy all types of industries quantity discharged, paper industry is the most serious to the pollution of water surrounding, and it is the matter of utmost importance of China's industrial pollution caused by paper manufacturing control still not, the matter of utmost importance that Ye Shi China trade effluent carries out processing up to standard.Therefore, must carry out advanced treatment to existing processing water outlet.
In prior art, the treatment process of papermaking wastewater mainly contains following several:
1, physico-chemical process:
1. coagulating sedimentation and filtration method: this method is difficult to reach water outlet COD≤60mg/l, and the sludge quantity producing is large;
2. active carbon adsorption: investment and working cost are higher, and inconvenient operation;
2, membrane separation process: investment and the working cost of the method equipment are high;
3, oxidation style: the working cost that the method produces is higher than 1.5 yuan/ton of water;
4, integrated process, such as electrochemical techniques are combined with BAF etc., but are all limited to laboratory lab scale, and fairly large engineering application has no report.
Recycled writing paper trade effluent makes water outlet CODcr≤60mg/l by advanced treatment, existing many methods in laboratory, but Practical Project report at home seldom, and invest highly, running cost is high, complex process is not easy to promote.Therefore, research wastewater treatment efficiency is stable, can control water outlet CODcr and drop to below 60mg/l, and it is extremely important to invest the advanced treatment of wastewater technology less, running cost is low, simple to operate.
Summary of the invention
The purpose of this utility model is to avoid weak point of the prior art and provides a kind of cost-saving, simple to operate, stable, water outlet CODcr can be controlled to the degree of depth Sewage treatment systems below 60mg/l.
The purpose of this utility model is achieved through the following technical solutions:
A kind of degree of depth Sewage treatment systems, comprise Controlling System and the intermediate pool being connected successively, waste water pump, oxidizing tower, the degassed pond of neutralization, settling tank, sludge pump and sludge thickener, wherein: the top of described oxidizing tower is respectively arranged with vitriol oil opening for feed and Fenton reagent opening for feed, described vitriol oil opening for feed is communicated with vitriol oil chemicals dosing plant, and described Fenton reagent opening for feed is communicated with ferrous sulfate storage pool and hydrogen peroxide storage tank respectively;
The top in the degassed pond of described neutralization is provided with liquid caustic soda feeding opening and coagulant aids opening for feed, and described liquid caustic soda feeding opening is communicated with liquid caustic soda chemicals dosing plant, and described coagulant aids opening for feed is communicated with coagulant aids chemicals dosing plant.
Wherein, described settling tank is radical sedimentation basin.
Wherein, in described settling tank, be provided with mud scraper.
Wherein, on the pipeline between described oxidizing tower and the degassed pond of described neutralization, be provided with pH on-line measuring device.
Wherein, in described intermediate pool, be provided with liquid level sensor.
the beneficial effects of the utility model:
A kind of degree of depth Sewage treatment systems of the present utility model comprises Controlling System and the intermediate pool being connected successively, waste water pump, oxidizing tower, the degassed pond of neutralization, settling tank, sludge pump and sludge thickener, wherein: the top of oxidizing tower is respectively arranged with vitriol oil opening for feed and Fenton reagent opening for feed, vitriol oil opening for feed is communicated with vitriol oil chemicals dosing plant, and Fenton reagent opening for feed is communicated with ferrous sulfate storage pool and hydrogen peroxide storage tank respectively; The top that neutralizes degassed pond is provided with liquid caustic soda feeding opening and coagulant aids opening for feed, and liquid caustic soda feeding opening is communicated with liquid caustic soda chemicals dosing plant, and coagulant aids opening for feed is communicated with coagulant aids chemicals dosing plant.During sewage disposal, the waste water pump that is stored in intermediate pool is delivered to oxidizing tower, and vitriol oil chemicals dosing plant adds vitriol oil adjusting pH to 3.5～4.5 in oxidizing tower, under acidic conditions, in oxidizing tower, adds Fenton reagent, oxygenant H wherein
2o
2with catalyst Fe SO
4there is oxidizing reaction, by the organic pollutant oxygenolysis in waste water, thereby the organic pollutant of the hard degradation in removal waste water, by the oxidizing tower waste water out degassed pond of process neutralization again, liquid caustic soda chemicals dosing plant is to adding liquid caustic soda in it to regulate pH to neutral, and a small amount of bubble in waste water is sloughed, simultaneously, coagulant aids chemicals dosing plant adds coagulant aids polyacrylamide in the degassed pond of neutralization, the iron mud generation flocculation reaction producing in itself and Fenton's reaction process, then waste water enters settling tank by neutralizing the gravity flow of degassed pond, at the bottom of the iron mud producing in Fenton's reaction process is settled down to pond under the effect of self gravitation, finally that the sludge pumping forming at the bottom of pond is further concentrated to sludge thickener, and the waste water that settling tank separates can reach emission standard and directly discharges.Compared with prior art, adopt degree of depth Sewage treatment systems of the present utility model and treatment process, the CODcr of water outlet further can be controlled to below 40mg/l, solid suspension substrate concentration reaches below 30 mg/l, directly reached the standard of discharge, can be to environment, and also this operation of sewage disposal system is stable, whole technique is simple to operation, and cost of investment is low.
Accompanying drawing explanation
Utilize accompanying drawing to be described further the utility model, but content in accompanying drawing does not form any restriction of the present utility model.
Fig. 1 is the structural representation of a kind of degree of depth Sewage treatment systems of the present utility model.
Fig. 1 comprises:
1---intermediate pool, 2---waste water pump, 3---oxidizing tower, 4---neutralizes degassed pond, 5---settling tank,
6---sludge pump, 7---sludge thickener, 8---vitriol oil chemicals dosing plant, 9---ferrous sulfate storage pool,
10---hydrogen peroxide storage tank, 11---liquid caustic soda chemicals dosing plant, 12---coagulant aids chemicals dosing plants.
Embodiment
With the following Examples and accompanying drawing the utility model is described in further detail.
A kind of degree of depth Sewage treatment systems of the present utility model, as shown in Figure 1, comprise Controlling System with the intermediate pool 1 being connected successively, waste water pump 2, oxidizing tower 3, neutralize degassed pond 4, settling tank 5, sludge pump 6 and sludge thickener 7, wherein: the top of oxidizing tower 3 is respectively arranged with vitriol oil opening for feed and Fenton reagent opening for feed, vitriol oil opening for feed is communicated with vitriol oil chemicals dosing plant 8, and Fenton reagent opening for feed is communicated with ferrous sulfate storage pool 9 and hydrogen peroxide storage tank 10 respectively;
The top that neutralizes degassed pond 4 is provided with liquid caustic soda feeding opening and coagulant aids opening for feed, and liquid caustic soda feeding opening is communicated with liquid caustic soda chemicals dosing plant 11, and coagulant aids opening for feed is communicated with coagulant aids chemicals dosing plant 12.
Intermediate pool 1 being set, paper waste is first being pumped into oxidizing tower 3 through intermediate pool 1, is stably to enter oxidizing tower 3 in order to ensure waste water, guarantees the steady running of Sewage treatment systems.
Oxidizing tower 3 carries out deep oxidation processing to sewage:
Vitriol oil chemicals dosing plant 8 first drops into the vitriol oil by the vitriol oil opening for feed at oxidizing tower 3 tops, regulates pH to 3.5～4.5, and then ferrous sulfate storage pool 9 and hydrogen peroxide storage tank 10 add catalyst Fe SO by Fenton reagent opening for feed to oxidizing tower 3 respectively
4with oxygenant H
2o
2, under acidic conditions, there is Fenton's reaction (oxidizing reaction) in the two, by the organic pollutant oxygenolysis in waste water, thus the organic pollutant of the hard degradation in removal waste water.
Concrete, oxidizing tower 3 arranges two, to improve the treatment capacity to waste water.
By oxidizing tower 3 waste water out, be acid, therefore, liquid caustic soda chemicals dosing plant 11 adds liquid caustic soda adjusting pH to neutral, to meet the pH requirement of water outlet in the degassed pond 4 of neutralization, neutralize degassed pond and also play the effect of sloughing a small amount of gas in waste water, due to the Fe producing in Fenton's reaction process
3+it itself is exactly extraordinary coagulating agent, so 12 of coagulant aids chemicals dosing plants need to add a small amount of coagulant aids polyacrylamide in the degassed pond 4 of neutralization, can make the iron mud generation coagulating in waste water, simultaneously, colourity, solid suspension substrate concentration (SS) and colloid are also had to extraordinary removal function, neutralize the water outlet in degassed pond 4 from flowing to settling tank 5.
In settling tank 5, the waste water after coagulation staticly settles and carries out mud-water separation, and being settled down to mud at the bottom of pond, by sludge pump 6, to be delivered to sludge thickener 7 further concentrated, and the waste water that settling tank 5 separates can reach emission standard and directly discharges.
Concrete, settling tank 5 is radical sedimentation basin 5.
Concrete, in settling tank 5, be provided with mud scraper.
In the present embodiment, oxidizing tower 3 and neutralize on the pipeline between degassed pond 4 and be provided with pH on-line measuring device 13, thereby the pH in on-line monitoring oxidizing tower 3, to control the dosage of vitriol oil chemicals dosing plant 8, ferrous sulfate storage pool 9 and hydrogen peroxide storage tank 10.
Concrete, in intermediate pool 1, be provided with liquid level sensor, when intermediate pool 1 interior liquid level lower than set(ting)value time, waste water pump 2 quits work.
The principle of work of degree of depth Sewage treatment systems of the present utility model is as follows:
During sewage disposal, the waste water pump 2 that is stored in intermediate pool 1 is delivered to oxidizing tower 3, and vitriol oil chemicals dosing plant 8 regulates pH to 3.5～4.5 to the interior interpolation vitriol oil of oxidizing tower 3, under acidic conditions, to the interior interpolation Fenton reagent of oxidizing tower 3, oxygenant H wherein
2o
2with catalyst Fe SO
4there is oxidizing reaction, by the organic pollutant oxygenolysis in waste water, thereby the organic pollutant of the hard degradation in removal waste water, by the oxidizing tower 3 waste water out degassed pond 4 of process neutralization again, liquid caustic soda chemicals dosing plant adds liquid caustic soda in 11 to its to regulate pH to neutral, and a small amount of bubble in waste water is sloughed, simultaneously, coagulant aids chemicals dosing plant 12 adds coagulant aids polyacrylamide in the degassed pond 4 of neutralization, the iron mud generation flocculation reaction producing in itself and Fenton's reaction process, then waste water enters settling tank 5 by neutralizing 4 gravity flows of degassed pond, at the bottom of the iron mud producing in Fenton's reaction process is settled down to pond under the effect of self gravitation, finally the mud forming at the bottom of pond is delivered to sludge thickener 7 by sludge pump 6 further concentrated, and can reaching emission standard, the waste water that settling tank 5 separates directly discharges.
Compared with prior art, adopt degree of depth Sewage treatment systems of the present utility model, the CODcr of water outlet further can be controlled to below 40mg/l, solid suspension substrate concentration reaches below 30 mg/l, and its good sewage processing effect has not only reached the standard of discharging, can be to environment, and this operation of sewage disposal system is stable, whole technique is simple to operation, and cost of investment is low.
Adopt Sewage treatment systems of the present utility model, with 20000 m
3the paper waste of/d is example:
in paper waste, the removal effect of CODcr and solid suspension substrate concentration (SS) is as shown in table 1:
The removal effect of table 1. CODcr and solid suspension substrate concentration (SS)
By table 1, can be obtained: 20000 m
3the water outlet CODcr of the paper waste of/d controls to below 40mg/l, solid suspension substrate concentration (SS) reaches below 30 mg/l, its good sewage processing effect, not only reached the standard of discharge, can be to environment, and this operation of sewage disposal system is stable, whole technique is simple to operation, and cost of investment is low.
Finally should be noted that; above embodiment is the restriction for the technical solution of the utility model is described but not to the utility model protection domain only; although the utility model is explained in detail with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify or be equal to replacement the technical solution of the utility model, and not depart from essence and the scope of technical solutions of the utility model.
Claims (5)
1. a degree of depth Sewage treatment systems, it is characterized in that: comprise Controlling System and the intermediate pool being connected successively, waste water pump, oxidizing tower, the degassed pond of neutralization, settling tank, sludge pump and sludge thickener, wherein: the top of described oxidizing tower is respectively arranged with vitriol oil opening for feed and Fenton reagent opening for feed, described vitriol oil opening for feed is communicated with vitriol oil chemicals dosing plant, and described Fenton reagent opening for feed is communicated with ferrous sulfate storage pool and hydrogen peroxide storage tank respectively;
The top in the degassed pond of described neutralization is provided with liquid caustic soda feeding opening and coagulant aids opening for feed, and described liquid caustic soda feeding opening is communicated with liquid caustic soda chemicals dosing plant, and described coagulant aids opening for feed is communicated with coagulant aids chemicals dosing plant.
2. a kind of degree of depth Sewage treatment systems according to claim 1, is characterized in that: described settling tank is radical sedimentation basin.
3. a kind of degree of depth Sewage treatment systems according to claim 1, is characterized in that: in described settling tank, be provided with mud scraper.
4. a kind of degree of depth Sewage treatment systems according to claim 1, is characterized in that: on the pipeline between described oxidizing tower and the degassed pond of described neutralization, be provided with pH on-line measuring device.
5. a kind of degree of depth Sewage treatment systems according to claim 1, is characterized in that: in described intermediate pool, be provided with liquid level sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320679457.0U CN203568922U (en) | 2013-10-31 | 2013-10-31 | Deep sewage treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320679457.0U CN203568922U (en) | 2013-10-31 | 2013-10-31 | Deep sewage treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203568922U true CN203568922U (en) | 2014-04-30 |
Family
ID=50536666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320679457.0U Expired - Lifetime CN203568922U (en) | 2013-10-31 | 2013-10-31 | Deep sewage treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203568922U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103523966A (en) * | 2013-10-31 | 2014-01-22 | 东莞理文造纸厂有限公司 | Advanced wastewater treatment system and treatment method |
| CN106495297A (en) * | 2016-11-25 | 2017-03-15 | 江苏鼎弘环境科技有限公司 | One-step method advanced waste treatment system |
-
2013
- 2013-10-31 CN CN201320679457.0U patent/CN203568922U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103523966A (en) * | 2013-10-31 | 2014-01-22 | 东莞理文造纸厂有限公司 | Advanced wastewater treatment system and treatment method |
| CN106495297A (en) * | 2016-11-25 | 2017-03-15 | 江苏鼎弘环境科技有限公司 | One-step method advanced waste treatment system |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140430 |
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| CX01 | Expiry of patent term |