System and method for degrading biotoxicity in wastewater

A biological toxicity and waste water technology, applied in the direction of chemical instruments and methods, water pollutants, separation methods, etc., can solve the problems of no waste gas collection and treatment system, secondary pollution, dead ends in the reactor, etc., and achieve environmental and social benefits Obvious, improve wastewater B/C, solve the effect of low treatment efficiency

Inactive Publication Date: 2019-12-31
利民化学有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has the following defects: 1) The cathode uses Ti electrodes, the wastewater components are complex, and the electrode surface is prone to passivation problems; 2) The fixed cathode and anode and the anion and yang chamber have dead ends in the reactor, which cannot ensure uniform reaction, and the operation is relatively complicated; 3) The ion-exchange membrane is a consumable, resulting in secondary pollution; 4) There is no waste gas collection and treatment system
This method has the following defects: 1) The cathode uses a stainless steel plate electrode, and the cathode and anode are fixed, and the electrode surface is prone to corrosion and passivation problems; 2) Additional Fenton agents and ion electrodes need to be added, resulting in secondary pollution; 3) The use of The aeration method mixes the wastewater and produces a large amount of waste gas, and there is no waste gas collection and treatment system
This system still has the problems of fixed cathode and anode, the need to add ion electrodes, the use of aeration to mix wastewater, and no waste gas collection and treatment devices.

Method used

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  • System and method for degrading biotoxicity in wastewater
  • System and method for degrading biotoxicity in wastewater
  • System and method for degrading biotoxicity in wastewater

Examples

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Embodiment 1

[0039] A system for degrading biological toxicity in wastewater such as figure 1 and 2As shown, it includes a storage system 1, a collection tank 2, an electrochemical reaction system 3, a buffer tank 4, and a biochemical treatment system 6. The storage system, the collection tank, and the buffer tank are respectively provided with high and low liquid level interlocking and alarm devices. The high and low liquid level interlocking and alarming device is composed of a liquid level meter 8 and a flow meter 9;

[0040] The storage system 1 includes 6 storage tanks 11 and a lift pump A arranged at the outlet of the storage tank 11, wherein the storage tank 11 is used to collect waste water, and the lift pump A cooperates with the flowmeter 9 to control the water entering the collection tank 2. waste water flow;

[0041] The collecting tank 2 is used for mixing and homogenizing the waste water entering therein, and the waste water flow rate entering the electrochemical reaction s...

Embodiment 2

[0052] Such as image 3 Shown, the method for biotoxicity in the system degradation bactericide waste water described in application embodiment 1, step is as follows:

[0053] 1) Collect the wastewater from the 6 fungicide production workshops into the 6 storage tanks of the storage system, set the wastewater delivery volume according to the wastewater flow in the workshop, and then use the lift pump A, liquid level meter 8 and flow meter 9 to control the wastewater entering the wastewater collection tank 2, the waste water in each storage tank 11 enters the waste water collecting tank 2 and carries out homogeneous mixing;

[0054] Among them, the water quality and quantity of mother liquor wastewater collected by each fungicide production workshop are shown in Table 1 below:

[0055] Table 1-Fungicide wastewater water quality and water quantity parameters

[0056]

[0057]

[0058] 2) Transport the homogeneous wastewater into the electrochemical reactor 31 through the...

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Abstract

The invention discloses a system and method for degrading biotoxicity in wastewater. The system comprises a storage system, a collection tank, an electrochemical reaction system, a buffer tank and a biochemical treatment system, wherein the electrochemical reaction system comprises an electrochemical reactor and a PLC control device; the electrochemical reactor comprises a water inlet, a water outlet, a water distribution chamber, a water outlet chamber, an overflow port and a plurality of reaction chambers; electrodes are arranged in the reaction chamber; a part of the electrodes are Ti / Ru series electrodes, and the rest of the electrodes are Ti / Ir electrodes; the Ti / Ru series electrodes and the Ti / Ir electrodes are separately connected with PLC control equipment; and the PLC control equipment is used for controlling the anodic-cathodic switching of two electrodes during an electrochemical reaction. The system of the invention is good in bactericide wastewater treatment effect, realizes automatic operation in the whole process, and effectively overcomes the defects of low treatment efficiency, high operation cost, and generation of solid waste and VOC pollution in the prior art.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a system and method for degrading biological toxicity in wastewater. Background technique [0002] In recent years, the proportion of the production and usage of fungicides has gradually increased. In fungicides (such as dyson, methoxyacrylates, cymoxanil, difenoconazole, thiacloprid, pyrimethanil, etc.) The mother liquor wastewater produced in the production process has the characteristics of high organic matter and high salt, low biodegradability and certain biological toxicity, and is not easy to be biodegraded. After the mother liquor wastewater is separated and desalinated through a certain pretreatment process, the distilled water still needs to be further treated to meet the requirements of biochemistry. [0003] At present, the pretreatment methods for degrading fungicide wastewater include adding oxidizing agents, adsorbent adsorption, micro-ele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/06B01D53/18B01D53/04C02F101/34C02F101/38C02F103/36
CPCB01D53/04B01D53/18C02F1/46C02F1/461C02F1/46104C02F1/46109C02F3/00C02F2101/34C02F2101/38C02F2103/36C02F2201/46105C02F2209/005
Inventor 尚鸿艳孙敬权李新生许宜伟王宇张荣全马书杰孙丽梅孔令飞
Owner 利民化学有限责任公司
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