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Intermittent-type treatment system for high-concentration COD in industrial wastewater and treatment technology

A technology for treating system and industrial wastewater, applied in the direction of backflow water treatment, water/sewage treatment, water treatment parameter control, etc. It can solve the problems of no treatment system and process steps, high COD of wastewater, and achieve the effect of convenient and flexible treatment process.

Pending Publication Date: 2018-11-06
孙鹏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the COD of wastewater after final treatment by this method is still high, at 200mg / L, and it only provides a preliminary treatment method, without providing specific treatment systems and process steps

Method used

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  • Intermittent-type treatment system for high-concentration COD in industrial wastewater and treatment technology
  • Intermittent-type treatment system for high-concentration COD in industrial wastewater and treatment technology
  • Intermittent-type treatment system for high-concentration COD in industrial wastewater and treatment technology

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specific Embodiment approach

[0044] like figure 1 As shown, the present invention provides an intermittent treatment system for high-concentration COD in industrial wastewater, including a pretreatment device, a buffer device 1, a UV-Cu-Fenton advanced oxidation device 2, a dosing device, a wastewater conveying device, and a return pipeline 3 ; Wherein the pretreatment device is connected to the inlet of the buffer device 1, the waste water conveying device comprises a first waste water delivery pump 4 and a second waste water delivery pump 5, and the UV-Cu-Fenton advanced oxidation device 2 is at the entrance through the first waste water delivery pump 4 and the buffer. The outlet of the device 1 is connected, and the outlet is connected to the inlet through the second waste water delivery pump 5 through the return pipeline 3; the dosing device includes a front-end dosing pump 6 and a mid-way dosing pump 7, and the front-end dosing pump 6 is connected to the UV through the dosing pipeline. -The inlet of ...

Embodiment 1

[0063] All the sewage collected in this example comes from Yongning County Industrial Park, in which industrial wastewater accounts for more than 60%, and the rest is domestic sewage. After the wastewater is treated in the UV-Cu-Fenton advanced oxidation device 2, it reaches the first-level A (COD content less than 50mg / L) discharge standard.

[0064] The specific treatment process is as follows:

[0065] Step 1: The pretreated industrial wastewater is transported to the buffer device 1, the COD content in the wastewater is detected by the first water quality online detector, and the copper oxide (CuO) and hydrogen peroxide (CuO) and hydrogen peroxide ( H 2 O 2 ), the calculated amount of hydrogen peroxide required for the treatment of 1t of waste water is 1%, H 2 O 2 with Cu 2+ The molar ratio is 30:1.

[0066] Step 2: The waste water in the buffer device 1 is transported to the inlet of the UV-Cu-Fenton advanced oxidation device 2 through the first waste water delivery...

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Abstract

The invention provides an intermittent-type treatment system for high-concentration COD in industrial wastewater and a treatment technology. The intermittent-type treatment system is characterized bycomprising a buffering device, a UV-Cu-Fenton advanced oxidation device, a dosing device, a wastewater conveying device and a refluxing pipe, wherein the wastewater conveying device comprises a firstwastewater conveying pump and a second wastewater conveying pump, the inlet of the UV-Cu-Fenton advanced oxidation device is connected with the outlet of the buffering device through the first wastewater conveying pump, and the outlet is connected with the inlet through the second wastewater conveying pump and via the refluxing pipe; the dosing device comprises a front end dosing pump and a midwaydosing pump, the front end dosing pump is connected with the inlet of the UV-Cu-Fenton advanced oxidation device through a dosing pipe, and the midway dosing pump is connected with the middle sectionof the UV-Cu-Fenton advanced oxidation device through the dosing pipe. The intermittent-type treatment system is particularly suitable for treating wastewater containing mass high-concentration COD and degradation-resistant organic matters generated by pharmaceutical wastewater, domestic wastewater, printing and dyeing wastewater, papermaking wastewater and the like in small-scale sewage treatment plants, and the COD content after the treatment can reach an emission standard first-level A.

Description

technical field [0001] The invention relates to the technical field of combining industrial wastewater treatment and automatic control, in particular to a treatment system and a treatment process for treating high-concentration COD in industrial wastewater, especially suitable for small sewage treatment plants due to pharmaceutical wastewater, domestic sewage, printing and dyeing wastewater, papermaking wastewater, etc. Wastewater treatment of a large amount of high-concentration COD and refractory organic matter produced by wastewater, as well as a small test device for treating high-concentration COD and refractory organic matter wastewater in the laboratory. Background technique [0002] With the rapid development of industry, my country has achieved rapid economic growth, while environmental pollution has also become a problem left over from the past. After several years of hard work, my country has made great achievements in urban sewage treatment technology, with fruit...

Claims

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Application Information

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IPC IPC(8): C02F1/32C02F1/72
CPCC02F1/325C02F1/722C02F2301/04C02F2209/42C02F2305/026C02F2201/3227C02F2209/06C02F2209/08C02F2209/02C02F2209/001C02F2209/005C02F2209/003
Inventor 张伟军杨鹏孙鹏
Owner 孙鹏
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