CN1098813C - Physic and chemical condensation method for treatment of foulwater - Google Patents
Physic and chemical condensation method for treatment of foulwater Download PDFInfo
- Publication number
- CN1098813C CN1098813C CN 94111868 CN94111868A CN1098813C CN 1098813 C CN1098813 C CN 1098813C CN 94111868 CN94111868 CN 94111868 CN 94111868 A CN94111868 A CN 94111868A CN 1098813 C CN1098813 C CN 1098813C
- Authority
- CN
- China
- Prior art keywords
- sewage
- solid
- flocculation agent
- liquid separation
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Abstract
The present invention relates to a method for treating sewage by adding flocculating agents according to the physicochemical principle. The present invention is characterized in that driven by a water pump, the sewage enters a transport pipeline for operation; at least respectively in the early stage and the later stage during operation, the flocculating agents are respectively and continuously added to sewage in dynamic operation in twice for thorough mixing and agglomeration reaction completion; then, the mixture enters a solid-liquid separation and sedimentation device; purified water after solid-liquid separation can be circularly used. The method of the present invention has small occupation areas, greatly increases the treatment efficiency and saves the consumption of the flocculating agents.
Description
What the present invention relates to is to utilize physical and chemical principle to realize the method for sewage purification can being widely used in multiple water treatment fields such as tap water, process water, urban domestic wastewater, trade effluent by precipitate and separate with flocculation agent.
Utilize physical and chemical principle, with add flocculation agent make with water in solubility and insoluble impurities, dirt generation physical-chemical reaction and produce cohesion, making impurity, deposition of dirt or floating separated and make purification of water quality is a kind of tradition and widely used water purification processing method.Common this method need take larger area soil or buildings to build the pond or the tank of precipitation usefulness, treatment sewage is introduced in pond or the tank, add flocculation agent and stirring, leave standstill natural sedimentation then, generally need a few hours just can make dirt separation to tens of hours.This process often needs just can make water quality reach the index request of purification through multistage re-treatment.Therefore both floor space was big for this method, and processing efficiency is not high again.For improving treatment capacity, certainly will further enlarge floor space.What Chinese patent 88105508.5 (publication number 1036749A) was introduced is exactly a kind of method of two-stage coagulation for wastewater treatment.
Many for solving above-mentioned floor space, inefficient problem, Chinese patent 91102047.0 (publication number 1065643A) discloses a kind of in the special purification groove, in numerous inorganic types and/or organic type flocculation agent, select 2 kinds or 3 kinds at least, the effluent purification method of handling with flocculation agent respectively with at least two processes.In fact this method does not break away from the pond of container type or tank yet to static or be bordering on the mode principle that immobilized sewage is handled.Therefore, the problem that the problems referred to above, especially water treatment efficiency are not high exists equally.
In addition, the problem that present above-mentioned treatment process also exists is that the flocculation agent consumption is relatively large, has in fact had the waste of significant proportion.
The objective of the invention is to provide a kind of new method for cleaning treatment of sewage of same employing physical chemistry agglomeration separation principle at the problems referred to above, even under the situation that does not change used flocculation agent, also can improve processing efficiency greatly, fundamentally solve the big problem of floor space, and the consumption of flocculation agent is reduced significantly.
Method for cleaning treatment of sewage of the present invention has changed in the pond of container type or tank to be handled static or is bordering on the traditional way and the method for the sewage of stationary state, but make sewage enter transport pipe, operation forward under pump or the promotion of other power set is with the sewage of dynamic shape in the flocculation agent processing operational process.In the methods of the invention, with flocculation agent the processing of sewage is divided into two stages at least.Enter the initial stage of transport pipe operation at sewage, with the first time flocculation agent add in the sewage of operation forward continuously, thorough mixing and carry out aggregation with dirt, impurity simultaneously makes it to be in operation.At the later stage of operation, with the second time flocculation agent add continuously in the sewage of operation forward again, make it thorough mixing in operational process equally, further finish aggregation.Then this sewage is sent into the solid-liquid separation sedimentation device,, make solid-liquid separation as various settling vessels commonly used, cyclone separator etc.Clear liquid after the separation is purifies waste water, can be for recycling.If any higher degree of purification requirement, this purifies waste water also can be more after filtering for using.Isolated throw out can further be handled through dehydration, drying etc., wherein can return circulation with the isolating water of solid substance and handle.
The flocculation agent that uses in said process can be one or more mixtures in the inorganic type flocculation agent such as present normally used iron trichloride, aluminum chloride, polymerize aluminum chloride, bodied ferric sulfate, Tai-Ace S 150, alum, or is one or more mixtures in polyoxyethylene, polyvinyl alcohol, polyacrylamide or the polymer flocculation agent such as their derivative, causticization starch.In addition, also can use other various novel flocculation agent.Experiment shows, when using flocculation agent twice in above-mentioned treating processes, to use for the first time the inorganic type flocculation agent, uses mode that polymer coagulates agent for well for the second time.Before handling with flocculation agent, many and be easy to isolating solid substance again as thinking that necessity pre-treatment of also can going ahead of the rest separates and removes, and can make decontamination effect improving better certainly for amount.
Can find after traditional agglomeration process method static or that be bordering on static sewage examines analysis in container type pond or tank, handling with flocculation agent, one pond of every processing or a groove sewage all have bigger volume, although all there is whipping process to make it to mix behind the input flocculation agent, but degree of uniformity, especially the degree of uniformity of observing from microcosmic angle is limited after all.Agglutinant mixes with the water of large volume like this and carries out aggregation itself with regard to needs for a long time, the limitation that flocculation agent mixes degree also can cause the material that aggregation has taken place constantly repeating to combine with agglutinant again, thereby effective cohesion dosage is reduced, agglomeration process delays, efficient reduces, and causes the waste of flocculation agent.
According to above-mentioned analysis, the present invention has fundamentally changed traditional processing mode, sewage is added flocculation agent continuously handle in the dynamic running process of transport pipe.Its result, the sewage volume that contacts with flocculation agent when mixing is very little on the one hand, and thorough mixing is even easily under kinestate.If the e Foerderanlage that adopt the inventor to introduce in CN91230323.9 this moment with high-speed mixing function, when promoting the sewage operation, can make flocculation agent and sewage high speed thorough mixing equal again, its mixing velocity and degree of uniformity are all far above mixing in container type pond or tank.On the other hand, continuous service along with sewage, the sewage that has mixed flocculation agent constantly moves forward, it then is " fresh " sewage of never sneaking into flocculation agent all the time that the then continuous flocculation agent that adds enters the sewage that is contacted behind the transport pipe, can avoid taking place the phenomenon of the material repeat consumption flocculation agent of aggregation effectively, when improving processing efficiency, save the consumption of agglutinant again effectively.Behind the adding flocculation agent first time, add the dissimilar flocculation agent second time again and handle, can make aggregation more fully with complete.After this processed sewage enters equipment for separating liquid from solid, and behind the settlement separate concentrating unit of efficient solid-liquid that uses the inventor once to be introduced in CN91230322.0, the processed sewage of fully finishing aggregation can very fast realization solid-liquid separation especially.The applicable multiple sewage disposal of this method of the present invention, and need not more special conditions requirement.Test shows, this method can shorten to 5～30 minutes with the aggregation treating processes of extremely tens of hours common a few hours, and the various sewage to pH5～13 all can directly be made purifying treatment, to the higher processed water quality of acidity, handle by last method again after can earlier potential of hydrogen being adjusted in the above-mentioned scope.
Below with example the inventive method is further described, but the scope of the inventive method is not meaned and is only limited to following example.
A kind of schema of Fig. 1 the inventive method.
According to flow process shown in Figure 1, treatment sewage is sent into transport pipe 1 operation by tank 3 through water pump 4.Water pump 4 herein can adopt the high-speed mixing transferpump of CN91230323.9.The flocculation agent A preparation back that adds for the first time can be from the front end of water pump 4 with pump 2, or the rear end, or the front and back end sends into transport pipe 1 simultaneously continuously, with operating sewage thorough mixing.When water pump 4 used above-mentioned patent transferpump, this flocculation agent can be sent into by second material inlet of this pump.Add sewage behind the flocculation agent for the first time when transport pipe 1 moves to later stage, also send into transport pipe through the flocculation agent B second time that dispenser 5 prepares continuously through pump 6, with operating sewage after mixing tank 7 thorough mixing reactions, send into solid-liquid separation settling vessel 8, also can adopt the sedimentation concentrating unit of CN91230322.0 this moment.Purifying waste water after the separation can be introduced water storage Buffer Pool 9 for reusing.In case of necessity, also can filter the back through filter 11 again uses.Isolated solid shape throw out can be sent into drying machine 12, and squeezing, the dry dried slag of shape of must consolidating are discharged, and the isolated water liquid of this process can return circulation and handle.Flow in the whole flow system, flow velocity add dose etc. and finish by the DCS computer control.
Example 1
Adopt above-mentioned diagram flow processing paper waste.The related detection index of waste water and processing after water sees Table 1 before handling.Handle by 1 cubic metre scale per hour.For the first time flocculation agent A uses polymerize aluminum chloride, or bodied ferric sulfate, or its mixture, adds continuously in the ratio of 0.5～1.5 kilogram of/ton waste water.Move after 5 minutes, add flocculation agent B for the second time,, add continuously in the ratio of 0.5～5 gram/ton waste water for polyacrylamide is pressed or derivatives thereof or causticization starch.Move and enter settling vessel and subsequent disposal thereof after 5 minutes.
Example 2
Press second-level settling pond traditional way Processing Paper Wastewater, compare test.Waste water sees Table 1 together with the related detection index of handling after water before the test.Treatment scale is suitable with example 1.The flocculation agent that the front and back secondary uses is identical with last example respectively, and flocculation agent adds in 1.5～2.5 kilograms of/ton waste water ratios for the first time, and flocculation agent adds in 5～10 gram/ton waste water ratios for the second time.Total aggregation time of second-level settling pond is 2～3 hours.
Example 3
By above-mentioned diagram flow processing urban domestic wastewater.The related detection index of waste water and processing after water sees Table 2 before handling.Treatment scale and example 1 are together.The flocculation agent A that uses for the first time still is polymerize aluminum chloride or poly-sulfur acid iron, or its mixture, and consumption is 0.1～0.7 kilogram of/ton waste water.Adding flocculation agent B for the second time after 5 minutes, equally also is the polyacrylamide or derivatives thereof, or causticization starch, and consumption is 0.2～2 gram/ton waste water.Send into settling vessel after 5 minutes.
Example 4
Press the second-level settling pond traditional way and handle the urban domestic wastewater, compare test.The related detection index of waste water and processing after water is with seeing Table 2 before handling.Treatment scale is suitable with example 3.The flocculation agent of twice adding in front and back is identical with example 3 respectively.Flocculation agent adds by the consumption of 1.0～2.0 kilograms of/ton waste water for the first time, and flocculation agent adds by the consumption of 2～10 gram/ton waste water for the second time.Total aggregation time of twice settling tank is 2～3 hours.
Table 1
| Example 1 | Example 2 | |||
| Before the processing | Purify waste water | Before the processing | Purify waste water | |
| CODcr(mg/l) | 1188.9 | 215.6 | 950 | 515 |
| BOD5(mg/l) | 396.8 | 79.3 | 350 | 179 |
| SS(mg/l) | 578.6 | 10.7 | 470 | 288 |
| Colourity (dilution doubly) | 520.0 | 15.4 | 280 | 117 |
| pH | 10.5 | 6.8 | 9.0 | 6.2 |
Table 2
| Example 3 | Example 4 | |||
| Before the processing | Purify waste water | Before the processing | Purify waste water | |
| CODcr(mg/l) | 650.0 | 87.5 | 494 | 257 |
| BOD5(mg/l) | 161.3 | 11.3 | 185 | 79 |
| SS(mg/l) | 279.5 | 2.7 | 350 | 151 |
| Colourity (dilution doubly) | 112 | 3 | 110 | 58 |
| pH | 7.6 | 6.9 | 8.5 | 6.3 |
Claims (5)
1. sewage water treatment method that adds the flocculation agent precipitate and separate, it is characterized in that under water pump promotes, making sewage to enter the transport pipe operation, ingress at water pump adopts the conveying water pump of high-speed mixing function to add one or more inorganic type flocculation agent in the sewage of operation forward for the first time continuously, make it thorough mixing in operational process, later stage in operation, add one or more polymer flocculation agent in the sewage of operation forward for the second time again continuously, make it thorough mixing in operational process equally, then this sewage is sent into the solid-liquid separation sedimentation device, make solid-liquid separation, purifying waste water after the separation for recycling.
2. sewage water treatment method as claimed in claim 1 is characterized in that the said flocculation agent adding second time is after mixing tank makes its thorough mixing.
3. sewage water treatment method as claimed in claim 1 or 2 is characterized in that saidly refiltering the back for recycling by isolated the purifying waste water of solid-liquid separation sedimentation device.
4. sewage water treatment method as claimed in claim 1 or 2 is characterized in that saidly being returned circulation and handling through dehydration and the isolating water liquid of solid by the isolating sediment of solid-liquid separation sedimentation device.
5. sewage water treatment method as claimed in claim 1 or 2 is characterized in that said solid-liquid separation sedimentation device adopts the settlement separate concentrating unit of efficient solid-liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94111868 CN1098813C (en) | 1994-08-13 | 1994-08-13 | Physic and chemical condensation method for treatment of foulwater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94111868 CN1098813C (en) | 1994-08-13 | 1994-08-13 | Physic and chemical condensation method for treatment of foulwater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1104183A CN1104183A (en) | 1995-06-28 |
| CN1098813C true CN1098813C (en) | 2003-01-15 |
Family
ID=5035697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94111868 Expired - Lifetime CN1098813C (en) | 1994-08-13 | 1994-08-13 | Physic and chemical condensation method for treatment of foulwater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1098813C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI309579B (en) * | 2003-11-06 | 2009-05-11 | Sanyo Electric Co | Method for preparing coagulant, and method for coagulation treatment of fluid |
| CN102765791B (en) * | 2012-08-23 | 2013-12-11 | 李开春 | Modified physical chemical coagulation sewage treatment method |
| CN109824179A (en) * | 2019-04-08 | 2019-05-31 | 四川博渠科技有限责任公司 | A kind of flood season emergency tap water production 3G flocculation precipitation method and its system |
-
1994
- 1994-08-13 CN CN 94111868 patent/CN1098813C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CN1104183A (en) | 1995-06-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR870000107B1 (en) | Process for removing phosphorus from organic waste liquids | |
| CN105461147B (en) | A kind of Magneto separate water purification system and its purification method | |
| CN207645995U (en) | One kind plus magnetic flocculation clarify sewage-treatment plant | |
| CN101633542A (en) | Treatment process of waste water produced in potato starch manufacturing | |
| CN102659280A (en) | Effective printing and dyeing sewage treatment method | |
| CN1283562C (en) | System and method for urban sewage chemical-biologic composite deep phosphorous removal | |
| CN107265530A (en) | A kind of multiple-effect water treatment agent and preparation method thereof and method for treating water | |
| CN1098813C (en) | Physic and chemical condensation method for treatment of foulwater | |
| CN112897820A (en) | Equipment and method for treating sewage by talcum powder high-concentration activated sludge process | |
| CN1025490C (en) | Method and apparatus for the clarification of sewage and other impure waste water | |
| CN1699226A (en) | Rapid treatment process for middle-small sewage source, and integrated rapid sewage treatment station thereof | |
| CN101376536A (en) | Sludge slurry treatment system | |
| CN215250222U (en) | Multistage purification and magnetic separation heavy metal wastewater treatment system | |
| CN109110917A (en) | Magnetic sludge zero-emission sullage continuous processing technique and dedicated unit | |
| CN1077179A (en) | Alkaline straw pulp paper black liquid and sewage treatment technology of intermediate section | |
| CN206955821U (en) | Multiple-effect separator | |
| CN86101140A (en) | Process for purifying waste water | |
| CN1137855C (en) | Water purifying method by swirl oxidation and flocculation | |
| CN2330649Y (en) | Mud-dreg separating contact type clarification tank | |
| CN1711218A (en) | Waste activated sludge anaerobic contact waste stream treatment process | |
| CN114873779A (en) | Coking wastewater advanced treatment method and system | |
| CN1115304C (en) | Continuous sewage treating process and system through intermittent aeration and by active sludge | |
| CN212076787U (en) | Solid-liquid separation system of biochemical mud of high concentration | |
| CN214457496U (en) | Carbon adsorption multiple-effect clarification system based on sulfur autotrophy | |
| CN1036749A (en) | Two-stage coagulation for wastewater treatment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140813 Granted publication date: 20030115 |