CN107935098A - A kind of method for handling organic wastewater - Google Patents

A kind of method for handling organic wastewater Download PDF

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Publication number
CN107935098A
CN107935098A CN201711422110.7A CN201711422110A CN107935098A CN 107935098 A CN107935098 A CN 107935098A CN 201711422110 A CN201711422110 A CN 201711422110A CN 107935098 A CN107935098 A CN 107935098A
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CN
China
Prior art keywords
methods
montmorillonite
organic wastewater
ferrous
acid solution
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Pending
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CN201711422110.7A
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Chinese (zh)
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不公告发明人
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Wuhu Wanjiang Intellectual Property Operation Center Co Ltd
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Wuhu Wanjiang Intellectual Property Operation Center Co Ltd
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Priority to CN201711422110.7A priority Critical patent/CN107935098A/en
Publication of CN107935098A publication Critical patent/CN107935098A/en
Pending legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
    • B01J20/12—Naturally occurring clays or bleaching earth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/3085—Chemical treatments not covered by groups B01J20/3007 - B01J20/3078
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/06—Controlling or monitoring parameters in water treatment pH
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00—Use of specific compounds during water treatment
    • C02F2305/02—Specific form of oxidant

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Hydrology & Water Resources (AREA)
  • Inorganic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Dispersion Chemistry (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)

Abstract

The present invention provides a kind of method for handling organic wastewater, method is：Add montmorillonite into molysite and ferrous mixed salt solution, after ultrasonic disperse, heating stirring, is then filtered, dry, up to modified montmorillonoid；Modified montmorillonite and persulfate by preparation are placed in organic wastewater, add acid solution, and it is 2.5 6 to adjust pH, stirring reaction, you can.Compared with prior art, processing method of the present invention is simple, and cost is low, high treating effect, utilizes potentiometric titrations SO4 ‑Degradable organic pollutant, the montmorillonite absorption after overactivation, organic wastewater COD≤30mg/L after processing.

Description

A kind of method for handling organic wastewater
Technical field
The invention belongs to treatment of Organic Wastewater field, and in particular to a kind of method for handling organic wastewater.
Background technology
In the industrial wastewaters such as sanitary sewage, food processing and papermaking, contain carbohydrate, protein, grease, wooden The organic substances such as element.These materials can pass through the biological chemistry action of microorganism to suspend or dissolved state is present in sewage And decompose.Need to consume oxygen in its decomposable process, thus be referred to as oxygen consumption pollutant.This pollutant can cause molten in water Solve oxygen to reduce, influence the growth of fish and other aquatiles.After oxygen in water exhausts, organic matter carries out anaerobic digestion, production The bad smells such as raw hydrogen sulfide, ammonia and mercaptan, make water quality deterioration.Organic components are extremely complex in water body, and oxygen consumption organic is dense The oxygen amount consumed in degree conventional unit volume of water during aerobic substance biochemical decomposition represents.
The general organic concentration of organic wastewater is high, and COD is generally even as high as tens of thousands of or even several in more than 2000mg/, some 100000 mg/L, in contrast, BOD is relatively low, and the ratio of many waste water BOD and COD is less than 0.3.Moreover, organic wastewater is more containing poisonous Property the material Organic substance in water that gives up occupied with aromatic compound and heterocyclic compound, it is more containing sulfide, nitride, heavy metal and Toxic organic compound.
It is very necessary to provide a kind of method of efficient processing organic wastewater simple, cost is low.
The content of the invention
It is an object of the invention to provide a kind of method for handling organic wastewater, using modification with Fe montmorillonite, improves and covers The specific surface area of soil is taken off, then coordinates processing organic wastewater with persulfate in acid condition.
Specific technical solution of the invention is as follows：
A kind of method for handling organic wastewater provided by the invention, comprises the following steps：
1) montmorillonite is added into molysite and ferrous mixed salt solution, after ultrasonic disperse, heating stirring, is then filtered, and is done It is dry, up to modified montmorillonoid；
2) the modified montmorillonite and persulfate prepared step 1) is placed in organic wastewater, adds acid solution, is adjusted Section pH is 2.5-6, stirring reaction, you can.
Molysite described in step 1) is selected from iron chloride, ferric nitrate or ferric sulfate.The ferrous salt is selected from ferrous sulfate, vulcanization Ferrous or ferrous nitrate.Molysite concentration in mixed solution is 1-4mol/L.Ferrous salt concentration in mixed solution For 1-4mol/L.
The amount ratio of montmorillonite and mixed solution is 1 in step 1):5-15g/ml.
Ultrasonic disperse 15-40min under the conditions of ultrasonic disperse refers to 15-30 DEG C described in step 1).
4-7h is stirred under the conditions of heating stirring refers to 90-120 DEG C described in step 1).
Drying refers to 60-80 DEG C of dry 15-20h described in step 1).
The mass ratio of modified montmorillonite and persulfate is 1 in step 2):0.8-1.5.
Persulfate described in step 2) is selected from sodium peroxydisulfate, potassium peroxydisulfate or ammonium persulfate.
The amount ratio of modified montmorillonite and organic wastewater is in step 2)：3.3-5：1g/L.
The content of organic wastewater COD described in step 2) is more than 2000mg/L.
Acid solution described in step 2) is selected from hydrochloric acid solution, salpeter solution or sulfuric acid solution.
Reaction is stirred described in step 2) is specially：15-40 DEG C of stirring reaction 2-10min.
In the present invention, first added with iron salt solutions in montmorillonite, progress is imvite modified, interlayer interval is split, interlayer Away from expansion, increase specific surface area and the aperture of montmorillonite, there is strong adsorptivity and chemism.Then in acid condition, Fe2+Etc. the ion for having catalytic activity as potentiometric titrations initiator, potentiometric titrations SO is utilized4 -Degrade organic dirt Thing is contaminated, the montmorillonite absorption after being then activated, reduces waste water COD.
Compared with prior art, processing method of the present invention is simple, and cost is low, and high treating effect, utilizes potentiometric titrations SO4 -Degradable organic pollutant, the montmorillonite absorption after overactivation, organic wastewater COD≤30mg/L after processing.
Embodiment
Embodiment 1
It is a kind of handle organic wastewater method be：
1) mixed to 1mol/L iron chloride 1L and 1mol/L protochloride molysite 1L, obtain mixed solution, added cover thereto De- soil 200g, ultrasonic disperse 30min under the conditions of 20 DEG C, stir 7h under the conditions of 90 DEG C, then filter, 60 DEG C of dry 18h, change to obtain the final product Property montmorillonite；
2) take modified montmorillonites of 100g prepared by step 1) and 100g sodium peroxydisulfates are placed in 250L organic wastewaters and (have Machine waste water comes from certain paper mill, COD 3290mg/L), hydrochloric acid solution is added, pH is adjusted and reacts 6min for 3,20 DEG C of stirrings, i.e., Can；Waste water COD after processing is 27.8mg/L.
Embodiment 2
It is a kind of handle organic wastewater method be：
1) mixed to 1mol/L ferric sulfate 1L and 1mol/L ferrous sulfate 1L, obtain mixed solution, it is de- to add illiteracy thereto Native 250g, ultrasonic disperse 25min under the conditions of 25 DEG C, stir 5h under the conditions of 110 DEG C, then filter, 80 DEG C of dry 15h, change to obtain the final product Property montmorillonite；
2) take modified montmorillonites of 100g prepared by step 1) and 120g potassium peroxydisulfates are placed in 20L organic wastewaters and (have Machine waste water comes from certain paper mill, COD 3290mg/L), hydrochloric acid solution is added, pH is adjusted and reacts 4min for 4,20 DEG C of stirrings, i.e., Can；Waste water COD after processing is 24.9mg/L.

Claims (10)

  1. A kind of 1. method for handling organic wastewater, it is characterised in that the described method comprises the following steps：
    1) montmorillonite is added into molysite and ferrous mixed salt solution, after ultrasonic disperse, heating stirring, is then filtered, dry, i.e., Obtain modified montmorillonoid；
    2) the modified montmorillonite and persulfate prepared step 1) is placed in organic wastewater, adds acid solution, adjusts pH For 2.5-6, stirring reaction, you can.
  2. 2. according to the method described in claim 1, it is characterized in that, molysite described in step 1) be selected from iron chloride, ferric nitrate or Ferric sulfate.
  3. 3. method according to claim 1 or 2, it is characterised in that the ferrous salt be selected from ferrous sulfate, ferrous sulfide or Ferrous nitrate.
  4. 4. according to claim 1-3 any one of them methods, it is characterised in that the use of montmorillonite and mixed solution in step 1) Amount is than being 1:5-15g/ml.
  5. 5. according to claim 1-4 any one of them methods, it is characterised in that ultrasonic disperse refers to 15- described in step 1) Ultrasonic disperse 15-40min under the conditions of 30 DEG C.
  6. 6. according to claim 1-5 any one of them methods, it is characterised in that heating stirring refers to 90- described in step 1) 4-7h is stirred under the conditions of 120 DEG C.
  7. 7. according to claim 1-6 any one of them methods, it is characterised in that modified montmorillonite and over cure in step 2) The mass ratio of hydrochlorate is 1:0.8-1.5.
  8. 8. according to claim 1-7 any one of them methods, it is characterised in that persulfate described in step 2) is selected from over cure Sour sodium, potassium peroxydisulfate or ammonium persulfate.
  9. 9. according to claim 1-7 any one of them methods, it is characterised in that in step 2) modified montmorillonite with it is organic The amount ratio of waste water is：3.3-5：1g/L.
  10. 10. according to claim 1-7 any one of them methods, it is characterised in that acid solution described in step 2) is selected from hydrochloric acid Solution, salpeter solution or sulfuric acid solution.
CN201711422110.7A 2017-12-25 2017-12-25 A kind of method for handling organic wastewater Pending CN107935098A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109987694A (en) * 2019-04-29 2019-07-09 江苏洁壤环保科技有限公司 A method of utilizing single organic wastewater treatment through persulfate
CN112390337A (en) * 2020-10-30 2021-02-23 西南科技大学 Preparation method of modified montmorillonite, product and application thereof
CN113772760A (en) * 2021-09-23 2021-12-10 安徽华业香料股份有限公司 Water treatment agent for perfume production process and preparation method thereof
CN114684887A (en) * 2020-12-30 2022-07-01 中国石油化工股份有限公司 In-situ remediation device and method for petroleum-type polluted underground water

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6663781B1 (en) * 1998-05-14 2003-12-16 U.S. Environmental Protection Agency Contaminant adsorption and oxidation via the Fenton reaction
CN105565465A (en) * 2015-12-15 2016-05-11 广东工业大学 Method for treating phthalate wastewater by means of catalyzing persulfate by utilization of supported activated carbon in microwave inducement manner

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6663781B1 (en) * 1998-05-14 2003-12-16 U.S. Environmental Protection Agency Contaminant adsorption and oxidation via the Fenton reaction
CN105565465A (en) * 2015-12-15 2016-05-11 广东工业大学 Method for treating phthalate wastewater by means of catalyzing persulfate by utilization of supported activated carbon in microwave inducement manner

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
吕利霞等: "《化工反应实训》", 31 March 2013, 北京理工大学出版社 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109987694A (en) * 2019-04-29 2019-07-09 江苏洁壤环保科技有限公司 A method of utilizing single organic wastewater treatment through persulfate
CN109987694B (en) * 2019-04-29 2022-03-08 江苏洁壤环保科技有限公司 Method for treating organic wastewater by using monopersulfate
CN112390337A (en) * 2020-10-30 2021-02-23 西南科技大学 Preparation method of modified montmorillonite, product and application thereof
CN112390337B (en) * 2020-10-30 2022-01-28 西南科技大学 Preparation method of modified montmorillonite, product and application thereof
CN114684887A (en) * 2020-12-30 2022-07-01 中国石油化工股份有限公司 In-situ remediation device and method for petroleum-type polluted underground water
CN113772760A (en) * 2021-09-23 2021-12-10 安徽华业香料股份有限公司 Water treatment agent for perfume production process and preparation method thereof
CN113772760B (en) * 2021-09-23 2022-12-27 安徽华业香料股份有限公司 Water treatment agent used in perfume production process and preparation method thereof

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Application publication date: 20180420

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