CN211570339U - High-concentration wastewater treatment device in pyraclonil production process - Google Patents

Abstract

The utility model discloses a high concentration effluent treatment plant in pyraclonil production process, including sewage buffer memory pond, diaphragm pump, indisputable carbon electrolysis cell, play water buffer memory pond, elevator pump and coagulating sedimentation tank, wherein, the sewage buffer memory pond passes through diaphragm pump connection indisputable carbon electrolysis cell, indisputable carbon electrolysis cell is separated into a plurality of independent electrolysis unit by a plurality of partition walls, and pre-buried in the partition wall has the honeycomb duct that supplies the sewage circulation, and the aeration pipe is all installed to the bottom of every electrolysis unit, and it has iron to dig the flower filler to fill simultaneously, still installs two immersible pumps in the bottom of last electrolysis unit, and one is the backflow circulating pump, through the first electrolysis unit of pipe connection, and another is the delivery pump, through pipe connection to play water buffer memory pond, it passes through the elevator pump and connects coagulating sedimentation tank to go out water buffer memory. The utility model discloses an iron-carbon micro-electrolysis technology carries out waste water treatment, and the treatment effeciency is high, effectual, has reduced sewage discharge, has reduced the sewage treatment expense.

Description

High-concentration wastewater treatment device in pyraclonil production process

Technical Field

The utility model relates to a chemical production technical field, more specifically say, especially relate to a high concentration effluent treatment plant in pyraclonil production process.

Background

The wastewater generated in the production process of the herbicide diconazole original drug mainly contains about 2 percent of salt (calculated by NaCl), 9000 of Chemical Oxygen Demand (COD) 16000mg/L, 600 times of chroma and about 2-5 of pH, has large fluctuation of wastewater pollutant concentration, contains tar-like suspended matters and organic byproducts which are difficult to degrade, and belongs to typical organic chemical wastewater with high salt, high concentration and difficult biodegradation. The existing treatment technical measures are that after production wastewater is collected by a special water tank, the production wastewater is neutralized, added with coagulation and coagulant aid, and then directly enters a biochemical treatment unit for treatment after being pretreated by gravity settling, however, the treatment efficiency is low, the chroma of the treated wastewater is hardly reduced, the wastewater is acidic, a large amount of alkali is consumed for neutralization, the salinity is increased, and the operation cost is high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high concentration effluent treatment plant in pyraclonil production process to the not enough of above-mentioned prior art, reduce sewage discharge, reduce the sewage treatment expense.

In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a high concentration effluent treatment plant in pyraclonil production process, includes sewage buffer memory pond, diaphragm pump, the little electrolytic bath of iron carbon, goes out water buffer memory pond, elevator pump and coagulating sedimentation tank, wherein, the sewage buffer memory pond passes through the little electrolytic bath of diaphragm pump connection iron carbon, the little electrolytic bath of iron carbon is separated into a plurality of independent electrolysis units by a plurality of partitions, and pre-buried in the partition has the honeycomb duct that supplies the sewage circulation, and the aeration pipe is all installed to the bottom of every electrolysis unit, and it has iron to dig the flower filler to fill simultaneously, still installs two immersible pumps in the bottom of last electrolysis unit, and one is the backflow circulating pump, through the first electrolysis unit of pipe connection, and another is the delivery pump, through pipe connection to play water buffer memory pond, it connects coagulating sedimentation tank through the elevator pump to go out water buffer memory pond.

The utility model discloses an iron-carbon micro-electrolysis technology carries out waste water treatment, compares with prior art, has following beneficial effect:

1. the chroma of the wastewater is obviously reduced, and can be reduced to below 50 times;

2. the iron-carbon micro-electrolysis operates at the pH value of 2-4, the inlet water does not need to be neutralized by adding alkali, and the salt content of the effluent wastewater is reduced to about 1.3%;

3. the pH of the wastewater is obviously improved, the effluent can reach about pH6, and the water inlet index requirement of a biochemical system can be met only by adding a small amount of alkali to adjust the pH to 7.5;

4. the Chemical Oxygen Demand (COD) can be reduced by 20-40% and can be reduced by 47.2% to the maximum;

5. the key biochemical index BOD/COD reaches 0.594 and the highest value reaches 0.682, so that the biochemical treatment is easy;

6. tarry suspended solids in the wastewater are removed after the iron-carbon micro-electrolysis treatment, organic byproducts which are difficult to degrade are also damaged, and the treatment efficiency and effluent indexes of the biochemical treatment unit are remarkably improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: 1-a sewage buffer pool; 2-a diaphragm pump; 3-an iron-carbon micro-electrolysis cell; 4-a water outlet buffer pool; 5-a lift pump; 6-a coagulating sedimentation tank; 7-a flow guide pipe; 8-an aerator pipe; 9-a circulating pump; 10-delivery pump.

Detailed Description

The present invention will be described in further detail with reference to the following examples, which are not intended to limit the invention.

As shown in figure 1, the high-concentration wastewater treatment device in the production process of pyraclonil provided by the utility model comprises a wastewater buffer tank 1, a diaphragm pump 2, an iron-carbon micro-electrolysis tank 3, an effluent buffer tank 4, a lift pump 5 and a coagulating sedimentation tank 6, wherein the sewage buffer tank 1 is connected with the iron-carbon micro-electrolysis tank 3 through a diaphragm pump 2, the iron-carbon micro-electrolysis tank 3 is divided into a plurality of independent electrolysis units by a plurality of partition walls, a guide pipe 7 for sewage circulation is pre-embedded in each partition wall, the bottom of each electrolysis unit is provided with an aeration pipe 8, and is filled with iron shaving filler, two submersible pumps are also arranged at the bottom of the last electrolysis unit, one is a reflux circulating pump 9, the first electrolysis unit is connected through a pipeline, the other electrolysis unit is a delivery pump 10 and is connected to the effluent cache pool 4 through a pipeline, and the effluent cache pool 4 is connected with the coagulation sedimentation tank 6 through a lifting pump 5.

The utility model discloses a working process is: the sewage buffer pool 1 is carried to the technology waste water that produces in the difenoconazole production process, carry out pH regulation and coagulating sedimentation in sewage buffer pool 1, the little electrolytic bath 3 of iron carbon is carried through diaphragm pump 2 to the clear water after the sediment, it circulates constantly in little electrolytic bath 3 of iron carbon, it is low electron to electrolyze the polymer in the waste water, waste water after electrolytic treatment passes through delivery pump 10 and carries out water buffer pool 4, carry out water output through elevator pump 5 at last and carry coagulating sedimentation tank 6, carry out subsequent processing.

The utility model discloses in, the little electrolysis principle of iron carbon is based on the battery reaction in the electrochemistry, when digging the filler with the iron and immersing electrolyte solution (contain the solution that salt ionization goes out zwitterion) in, because there is 1.2V's electrode potential difference between Fe and the C, therefore can form countless microbattery system, constitute an electric field in its effect space, the new ecological ferrous ion that the anodic reaction produced has stronger reducing power, can make the chromophoric group nitryl-NO of some organic matters₂Reduction of nitroso-NO to amino-NH₂The biodegradability of the amido organic matters is obviously higher than that of the nitro organic matters; the nascent divalent iron ion can also open the double bond of some unsaturated chromophoric groups (such as carboxyl-COOH, azo-N ═ N-), destroy the chromophoric groups and remove chroma, and decompose part of cyclic and long-chain organic matters which are difficult to degrade into small molecular organic matters which are easy to biodegrade, thereby improving biodegradability. In addition, divalent and trivalent iron ions are good flocculants, especially nascent divalent ironThe ions have higher adsorption-flocculation activity, iron ions can be changed into hydroxide flocculent precipitates by adjusting the pH value of the wastewater, suspended or colloid-state micro particles and organic macromolecules in the wastewater can be adsorbed, the chromaticity of the wastewater can be further reduced, and meanwhile, partial organic pollutants are removed to purify the wastewater. Cathodic reaction producing large quantities of nascent state [ H ]]And [ O]Under the condition of subacidity, the active ingredients can generate oxidation-reduction reaction with a plurality of components in the wastewater, so that organic macromolecules are subjected to chain scission degradation, the chromaticity of the organic wastewater is eliminated, the biodegradability of the wastewater is improved, and a large amount of H + is consumed by the cathode reaction to generate a large amount of OH < - >, so that the pH value of the wastewater is also improved.

Claims (1)

1. The utility model provides a high concentration effluent treatment plant in pyraclonil production process which characterized in that: including sewage buffer memory pond, diaphragm pump, the little electrolytic bath of iron carbon, play water buffer memory pond, elevator pump and coagulating sedimentation tank, wherein, sewage buffer memory pond passes through the little electrolytic bath of diaphragm pump connection iron carbon, the little electrolytic bath of iron carbon is separated into a plurality of independent electrolysis units by a plurality of partition walls, and pre-buried in the partition wall has the honeycomb duct that supplies the sewage circulation, and the aeration pipe is all installed to every electrolysis unit's bottom, and it has iron to dig the flower filler to fill simultaneously, still installs two immersible pumps in last electrolysis unit's bottom, and one is the backward flow circulating pump, through the first electrolysis unit of pipe connection, and another is the delivery pump, through pipe connection to play water buffer memory pond, play water buffer memory pond passes through the elevator pump and connects coagulating sedimentation tank.

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