CN104445811A - Treatment process for 3,5,6-trichloropyridine-2-sodium alkoxide production wastewater - Google Patents

Treatment process for 3,5,6-trichloropyridine-2-sodium alkoxide production wastewater Download PDF

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Publication number
CN104445811A
CN104445811A CN201410640035.1A CN201410640035A CN104445811A CN 104445811 A CN104445811 A CN 104445811A CN 201410640035 A CN201410640035 A CN 201410640035A CN 104445811 A CN104445811 A CN 104445811A
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China
Prior art keywords
waste water
trichloropyridine
treatment
sodium alkoxide
treatment process
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Pending
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CN201410640035.1A
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Chinese (zh)
Inventor
谷顺明
韦永飞
张涛
周浩
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Anhui Guoxing Biochemistry Co Ltd
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Anhui Guoxing Biochemistry Co Ltd
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Priority to CN201410640035.1A priority Critical patent/CN104445811A/en
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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
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • 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
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • 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
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • 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
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • 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
    • C02F2101/36—Organic compounds containing halogen
    • 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
    • C02F2101/38—Organic compounds containing nitrogen
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
    • C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)

Abstract

The invention relates to a treatment process for 3,5,6-trichloropyridine-2-sodium alkoxide production wastewater, and belongs to the technical field of environment protection. The treatment process comprises the processing steps as follows: the 3,5,6-trichloropyridine-2-sodium alkoxide production wastewater is subjected to acidifying sedimentation and special photocatalytic oxidation, and then is processed through a biochemical process, so as to directly reach the first class discharge standard in the national comprehensive sewage emission standard GB8978-1996. The treatment process has the characteristics of low wastewater treatment cost, short flow, high efficiency and stable effluent quality, and is suitable for industrial large-scale production wastewater treatment.

Description

A kind for the treatment of process of 3,5,6-trichloropyridine-2-sodium alkoxide factory effluent
Technical field
The present invention relates to Industrial Waste Water Treatments field, be specifically related to a kind for the treatment of process of 3,5,6-trichloropyridine-2-sodium alkoxide factory effluent.
Background technology
3,5,6-trichloropyridine-2-sodium alkoxide, molecular formula C 5hONCl 3na, molecular weight 220.5, sterling is white solid, is a kind of important industrial chemicals, is mainly used in the main intermediate of the kind synthesis such as low toxicity, wide spectrum, the organic insecticidal miticide Chlorpyrifos 94 of low residue and chlorpyrifos_methyl.In general, often produce one ton of trichloro pyridyl sodium alcoholate and approximately produce 6 tons of waste water.Trichloro pyridyl sodium alcoholate biological degradability is poor, utilizes common biochemical process to be difficult to process.
Current Chinese scholars has carried out large quantifier elimination to the factory effluent of trichloro pyridyl sodium alcoholate, extraction process, absorption method, the precipitator method, chemical oxidization method etc. is adopted to process it, but due to the existence of Coal Gas Washing Cycling Water salt, make the practical application of above-mentioned technique unsatisfactory.And dilute-biochemical process, the problem brought is that effluent quality is unstable, and extension rate, up to more than 20 times, causes the significant wastage of water resources.
Technical problem to be solved by this invention there is provided a kind for the treatment of process of 3,5,6-trichloropyridine-2-sodium alkoxide factory effluent, comprises the processing steps such as acidifying sedimentation, photochemical catalytic oxidation, biochemical treatment.This method not only cost for wastewater treatment is low, and flow process is short, and it is unstable to efficiently solve tradition dilution-biochemical process effluent quality, the problem of waste great lot of water resources.
Summary of the invention
The object of this invention is to provide a kind for the treatment of process of 3,5,6-trichloropyridine-2-sodium alkoxide factory effluent, effectively can solve traditional technology effluent quality unstable, water resource waste is large, the problems such as cost for wastewater treatment is high, long flow path, and efficiency is low.
The object of the invention is to be achieved through the following technical solutions:
A kind of 3,5, the treatment process of 6-trichloropyridine-2-sodium alkoxide factory effluent, refer to 3,5, the acidified sedimentation of 6-trichloropyridine-2-sodium alkoxide factory effluent, special photochemical catalytic oxidation, then the first discharge standard in national sewage comprehensive emission standard GB8978-1996 directly can be reached by biochemical process process.
The treatment process of 3,5,6-described trichloropyridine-2-sodium alkoxide factory effluents, is characterized in that the pH of acidifying is 1-5.
The treatment process of 3,5,6-described trichloropyridine-2-sodium alkoxide factory effluents, it is characterized in that photocatalysis apparatus can be fluidized-bed reactor or fixed-bed reactor, photocatalyst can be TiO 2, ZnO, SnO 2, ZrO 2, wherein any one such as CdS.
The treatment process of 3,5,6-described trichloropyridine-2-sodium alkoxide factory effluents, is characterized in that biochemical process refers to aerobic treatment
Pattern, adopts high efficient aeration pond, utilizes aerobic granular sludge membrane reactor, have obvious removal effect to the organism in waste water.
The step that the present invention adopts specifically can be carried out as follows:
(1) acidifying sedimentation
Trichloro pyridyl sodium alcoholate waste water enters acidifying still, adjusts pH to be acid, by Multistage settling filtration unit, can reclaim most of trichloro pyridyl sodium alcoholate, obtain the trichloro pyridyl sodium alcoholate waste water of low levels;
(2) photochemical catalytic oxidation
The trichloro pyridyl sodium alcoholate waste water that acidifying sedimentation obtains is by special photocatalytic oxidation device, and adopt and overlap series system more, the waste water after process directly can carry out biochemical treatment; Photocatalysis apparatus can be fluidized-bed reactor or fixed-bed reactor, and photocatalyst can be TiO 2, ZnO, SnO 2, ZrO 2, wherein any one such as CdS.
(3) biochemical process process
By the waste water after photochemical catalytic oxidation by biochemical process, artificial aeration's oxygen supply also utilizes the microbial decomposition in active sludge to give up
Organism in water, the organism in waste water is almost completely converted as CO 2, H 2o and cellular material, clearance reaches 99.9%;
Technical characteristics of the present invention: waste water treatment process provided by the invention, water outlet reaches GB8978-1996 first discharge standard completely, has cost for wastewater treatment low, flow process is short, efficiency is high, stable effluent quality, is applicable to the features such as the large-scale production wastewater treatment of industrialization.
Embodiment
Water quality situation before the process of table 1 trichloro pyridyl sodium alcoholate factory effluent
Sodium alkoxide (ppm) COD(mg/L) Ammonia nitrogen (mg/L)
5000 34800 417
Embodiment 1:
In the acidifying still of 5000L, add the trichloro pyridyl sodium alcoholate waste water of 3500L, adjust pH to be 1, leave standstill after stirring reaction 1h, the waste water after three grades of sedimentation filtration, utilizes air aeration, TiO 2for the fixed bed photocatalytic oxidation device process of photocatalyst, then by Wastewater by Biochemical Treatment, sampling surveys water quality situation as table 2:
The water quality situation of table 2 trichloro pyridyl sodium alcoholate factory effluent
Sodium alkoxide (ppm) COD(mg/L) Ammonia nitrogen (mg/L)
2.5 32 26
Waste water in table 2 after process reaches the first discharge standard in national sewage comprehensive emission standard GB8978-1996.
Embodiment 2:
In the acidifying still of 5000L, add the trichloro pyridyl sodium alcoholate waste water of 3500L, adjust pH to be 3, leave standstill after stirring reaction 1h, the waste water after three grades of sedimentation filtration, utilizes air aeration, TiO 2for the fixed bed photocatalytic oxidation device process of photocatalyst, then by Wastewater by Biochemical Treatment, sampling surveys water quality situation as table 3:
The water quality situation of table 3 trichloro pyridyl sodium alcoholate factory effluent
Sodium alkoxide (ppm) COD(mg/L) Ammonia nitrogen (mg/L)
3.1 49 39.2
Waste water in table 3 after process reaches the first discharge standard in national sewage comprehensive emission standard GB8978-1996.
Embodiment 3:
In the acidifying still of 5000L, add the trichloro pyridyl sodium alcoholate waste water of 3500L, adjust pH to be 5, leave standstill after stirring reaction 1h, the waste water after three grades of sedimentation filtration, utilizes air aeration, TiO 2for the fixed bed photocatalytic oxidation device process of photocatalyst, then by Wastewater by Biochemical Treatment, sampling surveys water quality situation as table 4:
The water quality situation of table 4 trichloro pyridyl sodium alcoholate factory effluent
Sodium alkoxide (ppm) COD(mg/L) Ammonia nitrogen (mg/L)
7.0 55 42
Waste water in table 4 after process reaches the first discharge standard in national sewage comprehensive emission standard GB8978-1996.
Embodiment 4:
In the acidifying still of 5000L, add the trichloro pyridyl sodium alcoholate waste water of 3500L, pH is adjusted to be 1, leave standstill after stirring reaction 1h, waste water after three grades of sedimentation filtration, the fixed bed photocatalytic oxidation device process utilizing CdS to be catalyzer, then by Wastewater by Biochemical Treatment, sampling surveys water quality situation as table 5:
The water quality situation of table 5 trichloro pyridyl sodium alcoholate factory effluent
Sodium alkoxide (ppm) COD(mg/L) Ammonia nitrogen (mg/L)
3.6 74 86
Waste water in table 5 after process reaches the first discharge standard in national sewage comprehensive emission standard GB8978-1996.
Embodiment 5:
In the acidifying still of 5000L, add the trichloro pyridyl sodium alcoholate waste water of 3500L, pH is adjusted to be 3, leave standstill after stirring reaction 1h, waste water after three grades of sedimentation filtration, the fixed bed photocatalytic oxidation device process utilizing CdS to be catalyzer, then by Wastewater by Biochemical Treatment, sampling surveys water quality situation as table 6:
The water quality situation of table 6 trichloro pyridyl sodium alcoholate factory effluent
Sodium alkoxide (ppm) COD(mg/L) Ammonia nitrogen (mg/L)
2.5 63 48.4
Waste water in table 6 after process reaches the first discharge standard in national sewage comprehensive emission standard GB8978-1996.
Embodiment 6:
In the acidifying still of 5000L, add the trichloro pyridyl sodium alcoholate waste water of 3500L, pH is adjusted to be 5, leave standstill after stirring reaction 1h, waste water after three grades of sedimentation filtration, the fixed bed photocatalytic oxidation device process utilizing CdS to be catalyzer, then by Wastewater by Biochemical Treatment, sampling surveys water quality situation as table 7:
The water quality situation of table 7 trichloro pyridyl sodium alcoholate factory effluent
Sodium alkoxide (ppm) COD(mg/L) Ammonia nitrogen (mg/L)
2.2 57 25.4
Waste water in table 7 after process reaches the first discharge standard in national sewage comprehensive emission standard GB8978-1996.

Claims (2)

1. the treatment process of a trichloropyridine-2-sodium alkoxide factory effluent, is characterized in that: concrete steps are as follows:
(1) acidifying sedimentation
Trichloro pyridyl sodium alcoholate waste water enters acidifying still, and tune pH is 1-5, by Multistage settling filtration unit, reclaims most of trichloro pyridyl sodium alcoholate, obtains the waste water of trichloro pyridyl sodium alcoholate low levels;
(2) photochemical catalytic oxidation
The trichloro pyridyl sodium alcoholate waste water that acidifying sedimentation obtains carries out photochemical catalysis by the photocatalytic oxidation device of many cover series connection, and the waste water after process directly can carry out biochemical treatment;
(3) biochemical process process
By the waste water after photochemical catalytic oxidation by biochemical process, artificial aeration's oxygen supply also utilizes the organism in the microbial decomposition waste water in active sludge, and the organism in waste water is almost completely converted as CO 2, H 2o and cellular material, clearance reaches 99.9%, and water outlet reaches GB8978-1996 first discharge standard completely.
2. the treatment process of 3,5,6-trichloropyridine-2-sodium alkoxide factory effluents as claimed in claim 1, it is characterized in that the photocatalysis apparatus described in step (2) is fluidized-bed reactor or fixed-bed reactor, the photocatalyst in photocatalysis apparatus is TiO 2, ZnO, SnO 2, ZrO 2, any one in CdS.
CN201410640035.1A 2014-11-13 2014-11-13 Treatment process for 3,5,6-trichloropyridine-2-sodium alkoxide production wastewater Pending CN104445811A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104876394A (en) * 2015-05-13 2015-09-02 安徽国星生物化学有限公司 Deep treatment method for wastewater containing 3,5,6-trichloropyridine-2-sodium alcoholate
CN105967312A (en) * 2015-04-09 2016-09-28 江苏九九久科技股份有限公司 3,5,6-trichloropyridine-2-sodium alcohol wastewater treatment method convenient to operate
CN106242136A (en) * 2016-08-31 2016-12-21 浙江奇彩环境科技股份有限公司 A kind of processing method containing pyridines waste water
CN108218113A (en) * 2017-12-29 2018-06-29 浙江环耀环境建设有限公司 A kind of organic wastewater treating system and its treatment process
CN115321707A (en) * 2022-08-04 2022-11-11 内蒙古犇星化学有限公司 Method for treating alkaline hydrolysis wastewater of mother liquor of sodium trichloropyridinol

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105967312A (en) * 2015-04-09 2016-09-28 江苏九九久科技股份有限公司 3,5,6-trichloropyridine-2-sodium alcohol wastewater treatment method convenient to operate
CN105967312B (en) * 2015-04-09 2018-10-02 江苏九九久科技有限公司 A kind of processing method of 3,5,6- trichloropyridines -2- sodium alkoxide waste water
CN104876394A (en) * 2015-05-13 2015-09-02 安徽国星生物化学有限公司 Deep treatment method for wastewater containing 3,5,6-trichloropyridine-2-sodium alcoholate
CN106242136A (en) * 2016-08-31 2016-12-21 浙江奇彩环境科技股份有限公司 A kind of processing method containing pyridines waste water
CN106242136B (en) * 2016-08-31 2019-06-11 浙江奇彩环境科技股份有限公司 A kind of processing method of the waste water containing pyridines
CN108218113A (en) * 2017-12-29 2018-06-29 浙江环耀环境建设有限公司 A kind of organic wastewater treating system and its treatment process
CN115321707A (en) * 2022-08-04 2022-11-11 内蒙古犇星化学有限公司 Method for treating alkaline hydrolysis wastewater of mother liquor of sodium trichloropyridinol
CN115321707B (en) * 2022-08-04 2023-11-21 内蒙古犇星化学有限公司 Mother liquor alkaline hydrolysis wastewater treatment method of sodium trichloropyridine alkoxide

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