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Combined chemical wastewater treatment device and treatment method

A chemical wastewater and treatment device technology, applied in chemical instruments and methods, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of increasing the complexity of equipment and the difficulty of operation and management, and the removal of organic pollutants Low efficiency, failure to meet environmental protection requirements, etc., to achieve good sewage treatment effect, clear and orderly treatment mechanism, and stable and reliable process operation

Pending Publication Date: 2022-04-12
YANCHENG INST OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned patents use multiple repeated oxidations, the process route is complicated, and the optimization effect that biological treatment and subsequent processes may play is not considered
[0004] Chinese patents "a baffle reactor and its method for treating sewage (ZL200610012070.4)" and "integrated high-concentration organic wastewater treatment device (ZL200310100513.1)" involve multiple couplings of anaerobic and aerobic processes , which increases the complexity of equipment and the difficulty of operation and management, and there is no advanced oxidation process
[0005] The existing combined treatment process of chemical wastewater has complex and lengthy process routes, chaotic combination mechanism, low removal efficiency of characteristic organic pollutants that are difficult to degrade, unstable process operation, and failure to meet environmental protection requirements, etc.

Method used

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  • Combined chemical wastewater treatment device and treatment method
  • Combined chemical wastewater treatment device and treatment method
  • Combined chemical wastewater treatment device and treatment method

Examples

Experimental program
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Effect test

Embodiment 1

[0056] The production wastewater produced by a chemical enterprise needs to be treated. The high-concentration chemical wastewater before treatment is COD≤8000mg / L, pH 6.5~8.5, SS≤300mg / L, NH 3 -N≤100mg / L, TP≤2.5mg / L, characteristic pollutant concentration chlorobenzene≤100mg / L. Chemical wastewater COD≤2500mg / L, pH 6.5~8.5, SS≤300mg / L, NH 3 -N≤50mg / L, TP≤1.0mg / L, characteristic pollutant concentration chlorobenzenes≤10mg / L. The effluent is required to meet the secondary standard of "Jiangsu Provincial Chemical Industry Discharge Standards for Major Water Pollutants" (DB32 / 939-2006). The effluent indicators require COD≤120mg / L, pH 6.5-8.5, SS≤150mg / L, NH 3 -N≤25mg / L, TP≤1.0mg / L, characteristic pollutant concentration chlorobenzene≤1.0mg / L.

[0057] use figure 1 Medium combined chemical wastewater treatment device, including pre-aeration unit 1, photoelectric Fenton reactor 2, degassing and neutralization unit 3, coagulation sedimentation unit 4, regulating tank 5, composite...

Embodiment 2

[0082] Such as Figure 2 to Figure 4 As shown, as an optional embodiment of the present invention, the degassing and neutralizing unit 3 includes:

[0083] A degassing neutralization tank 31, the photoelectric Fenton reactor 2 and the coagulation sedimentation unit 4 are all connected to the degassing neutralization tank 31, and the bottom end of the degassing neutralization tank 31 is connected with an aeration port;

[0084] A cover plate, the cover plate is installed on the pool mouth end of the degassing neutralization pool 31;

[0085] A dosing mechanism 32, the dosing mechanism 32 is installed on the cover plate;

[0086] Stirring mechanism 33, said stirring mechanism 33 is installed at the inner bottom of said degassing neutralization tank 31.

[0087] In this embodiment, the dosing mechanism 32 includes:

[0088] Add medicine box 34, described medicine add box 34 is installed on the top of described cover plate;

[0089] A dosing pump, the dosing pump is installed ...

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Abstract

The invention discloses a combined chemical wastewater treatment device and a treatment method. The combined chemical wastewater treatment device comprises a pre-aeration unit, a photoelectric Fenton reactor, a degassing neutralization unit, a coagulating sedimentation unit, an adjusting tank, a composite anaerobic reactor HAF and an immobilized biological activated carbon bed which are sequentially connected through water pipes. The device is reasonable in structural design, convenient to operate, high in working efficiency, low in cost and good in wastewater treatment effect, physicochemical treatment, biochemical treatment and guarantee treatment are orderly and organically combined, and the photoelectric Fenton reactor, the composite anaerobic reactor HAF and the immobilized biological activated carbon bed support and promote one another in function, so that the wastewater treatment effect is improved. The removal efficiency of refractory characteristic organic pollutants is higher than 98%, the sludge yield is low, the sludge treatment cost is low, the sewage treatment effect is good, and the method has important significance on environmental protection.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, in particular to a combined chemical wastewater treatment device. Background technique [0002] Chemical wastewater has the characteristics of large changes in water quantity and quality, poor biodegradability, difficult to degrade, and complex and diverse pollutants. Generally, appropriate pretreatment methods are adopted according to the actual wastewater quality, such as flocculation, micro-electrolysis, adsorption, and photocatalysis. Destroy refractory organic matter in wastewater, improve the biodegradability of wastewater, and then use biological methods to treat chemical wastewater. [0003] From the existing patent information, the Chinese patent "A Method and Device for Multiple Oxidation Treatment of Wastewater" (CN106145483A) discloses a method and device for multiple oxidation treatment of wastewater. The disclosed multiple oxidation treatment method for wastewater inclu...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F101/30
Inventor 李娜刘子锐王治敏夏妍吕慧华陈天明
Owner YANCHENG INST OF TECH
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