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Method for processing and resuing carbinol waste water for circulated cooling water

A technology of circulating cooling water and methanol, applied in adsorption water/sewage treatment, illumination water/sewage treatment, water/sewage multi-stage treatment, etc. Advanced system technology, the effect of reducing the amount of sludge treatment

Inactive Publication Date: 2011-06-29
NANKAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method requires large investment and complex operation and management

Method used

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  • Method for processing and resuing carbinol waste water for circulated cooling water
  • Method for processing and resuing carbinol waste water for circulated cooling water

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Under the normal operating conditions of each process in the wastewater treatment system, the treatment effects of each wastewater treatment process after treatment are shown in Table 1.

[0026] Table 1 The results of each process operation (hardness is expressed as CaCO 3 count)

[0027] Water quality project

flooded

hydrolysis

Regulation pool

Microaerobic organisms

deal with

aerobic

biological treatment

coagulation sedimentation place

reason

BAC

reaction tower

UV disinfection

craft

CODcr (mg / l)

Methanol (%)

pH

Turbidity (degrees)

Conductivity

total hardness

total alkalinity

Ca 2+ (mg / L)

CI - (mg / L)

T-P(mg / L)

NH 3 -N (mg / L)

Total number of bacteria

(piece / mL)

456

3.7

9.1

24.3

198

177

135

31

70

1.94

0.7

Winter 8×10 6

Summer 3×10 7

403

2.2

7.7

26...

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Abstract

The invention discloses a method for recycling industrial wastewater with carbinol from methanol plant for circulating cooling water, which adoptings a treatment process integration system including hydrolytic adjusting pond, microaerobic biological contact oxidization; aerobic biological contact oxidization, concreting sedimentation, active charcoal filtering and UV disinfection. In the biological contact oxidization, elastic cubic packing and microporous aeration system are used as packing. In the microaerobic biological contact oxidization process, organism is decomposed with 0.5-1. 0mg / L DO and and biodegradability of wastwater is greatly improved; in the aerobic biological contact oxidization, CODcr is effectively removed with 2-4mg / L DO; the suspension matter in output water of aerobic biochemical pond is removed via concreting sedimentation; suspension matter and organic matter is further removed by active charcoal filtering and finally the output water is repatedly used as supply water of circulating cooling waterafter UV disinfection. The method has the advantage of simple operation, low running cost, little equipment investment, repeatedly used wastewater and no secondary pollution.

Description

technical field [0001] The invention relates to the treatment and reuse of methanol industrial waste water, in particular to a method for treating methanol-containing waste water discharged from the production of methanol by a methanol plant and recycling it into circulating cooling water. Background technique [0002] Methanol is an important raw material in the production of pharmaceuticals, chemicals and pesticides. In the process of methanol production, the distillation raffinate discharged from the bottom of the rectification tower is usually called methanol wastewater. Methanol wastewater has a strong pungent odor, and its main components are methanol, ethanol, higher alcohols and aldehydes; it also contains some long-chain compounds. [0003] At present, the common methanol wastewater treatment methods include physical and chemical methods, chemical methods and biochemical methods, and these methods can treat methanol wastewater to varying degrees. Physicochemical a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F3/30C02F1/52C02F1/28C02F1/32
Inventor 肖羽堂
Owner NANKAI UNIV
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