Ethylene glycol industrial waste water treatment device and method for treating ethylene glycol industrial waste water

A technology for industrial waste water and treatment devices, applied in water/sewage treatment, natural water body treatment, water treatment parameter control, etc. It can solve problems such as high investment and operating costs, unprocessable waste water, clogging of circulating pumps, etc., to ensure normal operation , accurate pH value, and the effect of saving dosage

Active Publication Date: 2018-12-25
CHINA PETROLEUM & CHEM CORP +1
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has the following problems: the treatment process requires the COD concentration of the incoming water and the NO 3 -N is less than 1000mg/L and 100mg/L respectively, for high concentration of COD and high concentration of NO 3 -N wastewater cannot be treated
Moreover, during the operation function, a small amount of microbial fillers will gradually float from the inside of the reactor system to the liquid outlet of the reactor body, and a large amount of defilmed sludge will be washed out during this period. These floating fillers and washed out sludge are often blocked Circulating pumps need to be shut down frequently and backwashed to clean up the sludge, which brings great inconvenience to continuous production
[0005] In summary, in the current ethylene g

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ethylene glycol industrial waste water treatment device and method for treating ethylene glycol industrial waste water
  • Ethylene glycol industrial waste water treatment device and method for treating ethylene glycol industrial waste water
  • Ethylene glycol industrial waste water treatment device and method for treating ethylene glycol industrial waste water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0098] (1) if figure 1 As shown, the concentration of influent COD is 1800mg / L, NO 3 The concentration of -N is that the flow rate of 2320mg / L is the ethylene glycol industrial waste water 1 of 10t / h in the homogeneous pool 2, by contacting with the lye (concentration is 32%) from alkali tank 4, regulates the ethylene glycol industry The pH value of waste water 1 is 0.1, and the effluent of the homogeneous pool is obtained;

[0099] (2) the effluent of the homogeneous pool obtained by step (1) is in the neutralization pool 3, by contacting with the lye (concentration is 32%) from the alkali tank 4, the pH value of the effluent of the homogeneous pool is adjusted, by contacting with the lye from the alkali tank 4 Methanol (concentration is 99.85%) contacts of methanol tank 5, regulates COD: NO 3 -N mass ratio by urea solution from nitrogen salt tank 6 and KH from phosphorus salt tank 7 2 PO 4 Solution contact, adjust COD:N:P mass ratio, obtain the first waste water, the pH ...

Embodiment 2-3

[0106] According to the method of Example 1, the difference is that the ethylene glycol industrial wastewater treatment is carried out according to the reaction conditions in Table 1.

[0107] According to the method of Example 1, the water quality of the purified wastewater in the pool was measured, and the volume load was calculated. The results are shown in Table 1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to the field of organic waste water treatment, and discloses an ethylene glycol industrial waste water treatment device and a method for treating ethylene glycol industrial wastewater. The ethylene glycol industrial waste water treatment device comprises a secondary adjusting control unit and a reaction and discharge unit, wherein the secondary adjusting control unit is usedfor adjusting the pH value of ethylene glycol industrial waste water and adding carbon source, nitrogen nutrient salt and phosphorus nutrient salt to obtain first waste water; the reaction and discharge unit comprises a feed pump, a circulating pump, an anoxic expansion bed reactor, an anoxic water outlet tank, a water outlet tank, a self-cleaning filter and a slag storage tank, and the reactionand discharge unit is used for carrying out denitrification reaction on the first waste water to obtain purified waste water; the anoxic expansion bed reactor comprises a main body, a water flow distributor and a three-phase separator which are arranged inside the main body, and the inside of the main body is divided into a water flow distribution area, an anoxic expansion bed reaction area and aseparated water outlet area from bottom to top in sequence. The device of the invention has low energy consumption, and can continuously treat the ethylene glycol industrial waste water containing high-concentration COD and NO3-N .

Description

technical field [0001] The invention relates to the field of organic wastewater treatment, in particular to an ethylene glycol industrial wastewater treatment device and a method for treating ethylene glycol industrial wastewater. Background technique [0002] Ethylene glycol (EG, commonly known as glycol) is an important bulk basic organic chemical raw material, which can be used to produce a variety of chemical products, such as polyester fiber, antifreeze, unsaturated polyester resin, lubricant, plasticizer, Non-ionic surfactants, explosives, coatings and inks, etc., have a wide range of applications. In China, ethylene glycol is mainly used as a raw material for polyester and antifreeze, of which polyester consumption accounts for more than 90%. In 2013, the domestic import volume of ethylene glycol was 8.25 million tons, and the import dependence was as high as about 70%, showing a huge market gap. In 2014, the new domestic polyester production capacity is expected to ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C02F9/14C02F103/36
CPCC02F1/00C02F1/52C02F1/66C02F3/28C02F9/00C02F2103/36C02F2209/15C02F2305/06
Inventor 张宾王珺程学文李海龙莫馗高凤霞万国晖
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap