CN102452765A - High-salinity industrial wastewater treatment method combining biological purification - Google Patents
High-salinity industrial wastewater treatment method combining biological purification Download PDFInfo
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- CN102452765A CN102452765A CN2010105190964A CN201010519096A CN102452765A CN 102452765 A CN102452765 A CN 102452765A CN 2010105190964 A CN2010105190964 A CN 2010105190964A CN 201010519096 A CN201010519096 A CN 201010519096A CN 102452765 A CN102452765 A CN 102452765A
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- supersalinity
- biopurification
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- trade effluent
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The invention discloses a high-salinity industrial wastewater treatment method combining biological purification. The method comprises the following steps: a physical treatment step, namely removing the suspended substances and oil layers in high-salinity industrial wastewater; a chemical treatment step, namely removing the dissolved and colloid pollutants in the high-salinity industrial wastewater; a dilution step, namely adding salt-free water into the high-salinity industrial wastewater processed by the physical treatment step and the chemical treatment step so as to reduce the salt concentration; a biological purification step, namely introducing the diluted high-salinity industrial wastewater into an artificial wetland in which purification plants are planted; and a collection step, namely collecting the industrial wastewater subjected to biological purification from a water circulating system in the artificial wetland. According to the invention, the plants planted in the artificial wetland are used for carrying out biological purification, thus wastewater subjected to biological purification basically achieves the water quality of natural water bodies, not only can be safely discharged, but also can be recycled.
Description
Technical field
The present invention relates to technical field of waste water processing, relate in particular to a kind of supersalinity process for treating industrial waste water that combines biopurification.
Background technology
Chemical industry is one of mainstay industry of country, especially petrochemical complex and field of fine chemical, and immediate development is very fast.The subject matter that chemical industry faced is environmental protection problem, and especially chemical industry is to the influence to peripheral water body of the waste water of the consumption of water resources and chemical industry.Owing to contain various organic and inorganic pollutents in the waste water of chemical industry, must after handling, could discharge.Simultaneously, the chemical industry water loss is huge, if can the cycling utilization of wastewater of getting rid of then can be alleviated the influence of chemical industry to surrounding enviroment greatly.
The means that at present processing of trade effluent mainly adopted are physical treatment or chemical treatment.The main purpose of physical treatment is from trade effluent, to remove the solid pollutant that is suspended state or swim in the greasy dirt on the water surface.General the clearance of suspended solids is 70%～80% through after the physical treatment, but physical treatment has only about 25%～40% the clearance of biochemical oxygen demand (BOD), and the degree of purification of waste water is not high.Chemically treated main purpose is the organic or inorganic pollutant of removing in the waste water, and chemical treatment generally realizes through the mode of adding preparation, is used to regulate the pH value of waste water, perhaps the pollutent of resolution of precipitate in water.
But no matter be the waste water after physical treatment or the chemical treatment, the water ratio with in the natural water still contains more industrial pollutants, is drained in the natural water and still can produces bigger pollution to natural water.
Summary of the invention
The present invention is intended to propose a kind of supersalinity process for treating industrial waste water that utilizes the biopurification function of wetland plant.
According to the present invention, a kind of supersalinity process for treating industrial waste water that combines biopurification is proposed, comprise the steps:
The physical treatment step is removed suspended substance and oil film in the supersalinity trade effluent;
Chemical treatment step, dissolving and colloid pollution thing in removing in the supersalinity trade effluent;
Dilution step adds salt-free water in through the supersalinity trade effluent of physical treatment step and chemical treatment step, to reduce salt concentration;
The biopurification step is incorporated into the supersalinity trade effluent after the dilution in kind of the artificial swamp that is implanted with the purification plant;
From the water circulation system of artificial swamp, collect trade effluent through biopurification.
Wherein physical treatment step comprises: use mechanical stirring and deposition to remove the suspended substance in the supersalinity trade effluent; With the oil film that uses in the gravitational separation process removal supersalinity trade effluent.
Wherein chemical treatment step comprises: in the supersalinity trade effluent, add coagulating agent, the post precipitation solid-liquid separation is removed solids.
In the biopurification step; Plant the artificial swamp that is implanted with the purification plant and be divided into first class purification district, secondary purification district and three grades of purifying areas; Wherein the depth of water in first class purification district is 0.1-0.3 rice, and the depth of water in secondary purification district is 0.3-0.6 rice, and the depth of water of three grades of purifying areas is 0.6-1 rice.The purification plant of in the first class purification district, planting comprises wilson iris, aquatic Canna generalis Bailey and Spiked Loosestrife; The purification plant of in the secondary purification district, planting comprises Scirpus tabernaemontani, narrow leaf cattail, common cattail, reed and lotus, and the purification plant of in three grades of purifying areas, planting comprises water lily.
Adopt the supersalinity process for treating industrial waste water of combination biopurification of the present invention; Trade effluent through after physics, the chemical treatment is imported in the artificial swamp; The plant that utilization is planted in the artificial swamp carries out biopurification; Basically reach the water quality in the natural water through the waste water after the biopurification, both can safety dumping, also can recycling.
Description of drawings
Fig. 1 is the schema according to the supersalinity process for treating industrial waste water of combination biopurification of the present invention.
Fig. 2 is the schema according to physical treatment step in the supersalinity process for treating industrial waste water of combination biopurification of the present invention.
Embodiment
Nearest discovers that the part plant that lives in the wetland has tolerance level preferably to brine waste, and some of plant can utilize the salt in the waste water as nutrient.In having the wetland of a large amount of plants, the saline pollution thing in the water can significantly reduce, can be near the water quality of natural water through the brine waste that wetland plant purifies.Therefore, the present invention is intended to utilize the biopurification function of wetland plant, in conjunction with physical treatment and chemical treatment, the supersalinity trade effluent is handled effectively.
With reference to shown in Figure 1, the present invention has disclosed a kind of supersalinity process for treating industrial waste water that combines biopurification, and this method comprises following step:
S101. the physical treatment step is removed suspended substance and oil film in the supersalinity trade effluent.With reference to shown in Figure 2, this physical treatment step further comprises: S201. uses mechanical stirring and deposition to remove the suspended substance in the supersalinity trade effluent, and S202. uses gravitational separation process to remove the oil film in the supersalinity trade effluent.Wherein step S201 can carry out in a stirring settling pond that is provided with whipping appts, and step S202 can carry out in settling bowl.
S102. chemical treatment step, dissolving and colloid pollution thing in removing in the supersalinity trade effluent.In one embodiment, step S102 comprises in the supersalinity trade effluent and adds coagulating agent, makes dissolving and colloid pollution thing post precipitation solid-liquid separation, removes solids then.This step can be carried out in coagulative precipitation tank.
S103. dilution step adds salt-free water in through the supersalinity trade effluent of physical treatment step and chemical treatment step, to reduce salt concentration.Owing to need water be incorporated in kind of the wetland that is implanted with plant afterwards and carry out biopurification; And plant has certain limitation to the degree of restraining oneself of salt concentration; Therefore, if the salt concn in the trade effluent after process physical treatment step and the chemical treatment step is still higher, exceed the words of the tolerance limit of plant; In step S103, in waste water, add salt-free water, make salt concentration be reduced to the level that plant can be tolerated.
S104. the biopurification step is incorporated into the supersalinity trade effluent after the dilution in kind of the artificial swamp that is implanted with the purification plant.In the biopurification step; Plant the artificial swamp that is implanted with the purification plant and be divided into first class purification district, secondary purification district and three grades of purifying areas; Wherein the depth of water in first class purification district is 0.1-0.3 rice, and the depth of water in secondary purification district is 0.3-0.6 rice, and the depth of water of three grades of purifying areas is 0.6-1 rice.The different plant of plantation in the purifying area of different grades; For example in one embodiment; The purification plant of in the first class purification district, planting comprises wilson iris, aquatic Canna generalis Bailey and Spiked Loosestrife; The purification plant of in the secondary purification district, planting comprises Scirpus tabernaemontani, narrow leaf cattail, common cattail, reed and lotus, and the purification plant of in three grades of purifying areas, planting comprises water lily.
S105. from the water circulation system of artificial swamp, collect trade effluent through biopurification.The water quality of the waste water of process biopurification can be discharged in the natural water of periphery, also can recycling.
Adopt the supersalinity process for treating industrial waste water of combination biopurification of the present invention; Trade effluent through after physics, the chemical treatment is imported in the artificial swamp; The plant that utilization is planted in the artificial swamp carries out biopurification; Basically reach the water quality in the natural water through the waste water after the biopurification, both can safety dumping, also can recycling.
Claims (5)
1. a supersalinity process for treating industrial waste water that combines biopurification is characterized in that, comprising:
The physical treatment step is removed suspended substance and oil film in the supersalinity trade effluent;
Chemical treatment step, dissolving and colloid pollution thing in removing in the supersalinity trade effluent;
Dilution step adds salt-free water in through the supersalinity trade effluent of physical treatment step and chemical treatment step, to reduce salt concentration;
The biopurification step is incorporated into the supersalinity trade effluent after the dilution in kind of the artificial swamp that is implanted with the purification plant;
From the water circulation system of artificial swamp, collect trade effluent through biopurification.
2. the supersalinity process for treating industrial waste water of combination biopurification as claimed in claim 1 is characterized in that, said physical treatment step comprises:
Use mechanical stirring and deposition to remove the suspended substance in the supersalinity trade effluent;
Use gravitational separation process to remove the oil film in the supersalinity trade effluent.
3. the supersalinity process for treating industrial waste water of combination biopurification as claimed in claim 1 is characterized in that, said chemical treatment step comprises:
In the supersalinity trade effluent, add coagulating agent, the post precipitation solid-liquid separation is removed solids.
4. the supersalinity process for treating industrial waste water of combination biopurification as claimed in claim 1; It is characterized in that; In the said biopurification step, plant the artificial swamp that is implanted with the purification plant and be divided into first class purification district, secondary purification district and three grades of purifying areas, wherein the depth of water in first class purification district is 0.1-0.3 rice; The depth of water in secondary purification district is 0.3-0.6 rice, and the depth of water of three grades of purifying areas is 0.6-1 rice.
5. the supersalinity process for treating industrial waste water of combination biopurification as claimed in claim 4; It is characterized in that; In the said biopurification step; The purification plant of in the first class purification district, planting comprises wilson iris, aquatic Canna generalis Bailey and Spiked Loosestrife, and the purification plant of in the secondary purification district, planting comprises Scirpus tabernaemontani, narrow leaf cattail, common cattail, reed and lotus, and the purification plant of in three grades of purifying areas, planting comprises water lily.
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| CN2010105190964A CN102452765A (en) | 2010-10-26 | 2010-10-26 | High-salinity industrial wastewater treatment method combining biological purification |
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| CN2010105190964A CN102452765A (en) | 2010-10-26 | 2010-10-26 | High-salinity industrial wastewater treatment method combining biological purification |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103232133A (en) * | 2012-06-15 | 2013-08-07 | 北京新创宏力科技发展有限公司 | Composite biochemical, coupled physicochemical, and heavy-metal-removing sewage treatment process and technology |
| CN103240265A (en) * | 2013-04-28 | 2013-08-14 | 上海大学 | Method for repairing diesel oil polluted soil by fringed iris herbs |
| CN105523681A (en) * | 2014-09-28 | 2016-04-27 | 宝山钢铁股份有限公司 | Cold-rolled reverse osmosis concentrated salt water purification treatment method |
| CN106277598A (en) * | 2016-08-28 | 2017-01-04 | 潘纪鸿 | The processing method of high salt height Organic substance industrial wastewater |
-
2010
- 2010-10-26 CN CN2010105190964A patent/CN102452765A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103232133A (en) * | 2012-06-15 | 2013-08-07 | 北京新创宏力科技发展有限公司 | Composite biochemical, coupled physicochemical, and heavy-metal-removing sewage treatment process and technology |
| CN103232133B (en) * | 2012-06-15 | 2015-08-12 | 北京新创宏力科技发展有限公司 | Composite bio-chemical, be coupled materialization and shift out the sewage treatment process of heavy metal |
| CN103240265A (en) * | 2013-04-28 | 2013-08-14 | 上海大学 | Method for repairing diesel oil polluted soil by fringed iris herbs |
| CN105523681A (en) * | 2014-09-28 | 2016-04-27 | 宝山钢铁股份有限公司 | Cold-rolled reverse osmosis concentrated salt water purification treatment method |
| CN105523681B (en) * | 2014-09-28 | 2018-10-02 | 宝山钢铁股份有限公司 | A kind of purifying treatment method of the reverse osmosis concentrated brine of cold rolling |
| CN106277598A (en) * | 2016-08-28 | 2017-01-04 | 潘纪鸿 | The processing method of high salt height Organic substance industrial wastewater |
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Application publication date: 20120516 |