A paint wastewater treatment process

A technology for treating process and paint wastewater, applied in the direction of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problem that the equipment cannot fully play its role, the discharge stability is poor, and the treatment effect remains to be seen. Improvement and other issues, to achieve the effect of stable treatment effect, convenient operation and maintenance, and long service life

Inactive Publication Date: 2018-08-07
HUZHOU SENNUO MEMBRANE TECH ENG
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the process is lengthy, the equipment cannot fully play its role, the treatment cost is high, the discharge stability is poor, and the treatment effect needs to be improved.

Method used

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  • A paint wastewater treatment process

Examples

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Embodiment

[0024] Examples, see attached figure 1 , a paint wastewater treatment process, it includes the following process:

[0025] (1) Raw water enters the regulating tank: the raw water enters the regulating tank 1 through the pump, the water inflow rate is 3.5t / h, and the volume of the regulating tank is 24m 3 , the system starts to operate normally after the water volume in the adjustment pool reaches a certain level.

[0026] (2) The water in the adjustment pool enters the pre-filter 3 through the lifting pump 2 and enters the degassing carbonization linkage system 4 after being filtered: the degassing carbonization linkage system is provided with a carbonized membrane module, and the carbonized membrane module is made of 30 hollow fibers Tubes and membranes are connected in series. The hollow fiber tubes are equipped with an air inlet, an air outlet, a water inlet and a water outlet. The water distributor makes the tube membrane fill evenly inside the carbonized membrane module...

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Abstract

The invention relates to a paint wastewater treatment process, which includes the following process: the raw water enters the adjustment pool; the water in the adjustment pool enters the pre-filter through the lifting pump and is filtered, and then enters the degassing and carbonization linkage system. The degassing and carbonization linkage system is equipped with Carbonized membrane module; the effluent of the carbonized membrane module passes through the dosing tank a and enters the micro-electrolysis system through pump a to treat high-concentration organic wastewater; The Fenton reaction is carried out in the shaped tube, and the medicine tank b is added to adjust the pH value and hydrogen peroxide content; after the Fenton reaction, the effluent enters the coagulation sedimentation tank for precipitation after the dosing tank c is added; the clear liquid in the upper part of the coagulation sedimentation tank Enter the photocatalytic system through pump c to remove organic matter in the clear liquid; the photocatalytic effluent is collected in an intermediate water tank, and then enters the enhanced filter through pump d to be discharged. The invention reduces the COD value of paint wastewater, has simple technological process and long service life.

Description

Technical field: [0001] The invention relates to the field of waste water treatment technology, and more specifically relates to a paint waste water treatment technology. Background technique: [0002] The main components of paint wastewater discharged by production enterprises are toluene, xylene, dicyclopentadiene, phthalic anhydride, maleic anhydride, butenedioic acid (cis, trans), methylal, acetal, ethanol, dimethyl ether, butylene Esters, hypophosphorous acid, etc., these. It often contains toxic and harmful substances such as phenols, benzenes and heavy metals (surface treatment), and the COD of the water produced by evaporation of paint wastewater is 4000-5000mg / L. pH = 4-12.5 range. Phenol is a chemical co-carcinogen, and if high-concentration phenol-containing wastewater is discharged into waters, aquatic organisms will be damaged. Pigments currently used in the paint industry also contain lead and chromium. Lead is currently the most widely polluting element, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/06
Inventor 王中华刘宁生
Owner HUZHOU SENNUO MEMBRANE TECH ENG
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