Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

System for treating wastewater containing heavy oil

A waste water and heavy oil technology, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve large economic burden, violate clean production, increase energy consumption and cost of sewage treatment, etc. problem, to achieve the effect of low cost and convenient use

Inactive Publication Date: 2013-09-18
STATE GRID CORP OF CHINA +2
View PDF3 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a large amount of diluted wastewater increases the processing load of the biochemical station, virtually increases the energy consumption and cost of sewage treatment, and makes the enterprise bear a huge economic burden, which violates the principle of clean production

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
  • System for treating wastewater containing heavy oil
  • System for treating wastewater containing heavy oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0024] A system for treating heavy oil wastewater, its structure is as follows figure 1 As shown, it includes interconnected pretreatment unit, biochemical treatment pool and filtration unit. The pretreatment unit includes a grease trap 2 , a regulating tank 3 and a clean water tank 4 connected in sequence, and a slag tank 5 is also connected to the side of the clean water tank 4 . The grease trap 2 communicates with the regenerated waste water pool 1 containing heavy oil containing waste water. Fupai compound coagulant can be added in the adjustment tank 3. Inorganic coagulants that can be used include polyaluminum chloride, polyferric sulfate, polysilicon aluminum chloride, polysilicon aluminum sulfate or polysilicon ferric sulfate, and organic coagulants include polyacrylamide, dimethyl propyl ammonium chloride . A submersible mixer is installed at the bottom of the clear water pool, and the hydraulic retention time (HRT) in the pool is controlled to be 8-9 hours, which ...

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

PropertyMeasurementUnit
concentrationaaaaaaaaaa
concentrationaaaaaaaaaa
Login to View More

Abstract

The invention relates to a system for treating wastewater containing heavy oil. The system comprises a pretreating unit, a coagulation-air floatation unit and an oxidation and biochemical treatment filter unit which are connected with one another, wherein the pretreating unit comprises oil separation tanks, an adjusting tank and a clean water tank which are connected in sequence; a slag tank is connected to the side of the clean water tank; the coagulation-air floatation unit comprises a dosing device, an air floatation tank, a discharge tank and control devices connected with the air floatation tank and the discharge tank; the control devices are connected with a dissolved air tank and agent tanks; strong oxidants are arranged in the oxidation and biochemical treatment filter unit; and the discharge end of the oxidation and biochemical treatment filter unit is connected with an original regenerated wastewater tank, namely a biochemical tank or an activated carbon filtration system. Compared with the prior art, the system has the advantages that the existing field oily water treatment equipment is transformed for field treatment tests, so that the system is convenient to use and is low in cost; and the system can well treat the wastewater containing heavy oil, thus not only solving the problem that the wastewater effluent has difficulty in reaching the standard but also achieving the aim of recycling.

Description

technical field [0001] The invention relates to a wastewater treatment system, in particular to a system for treating heavy oil-containing wastewater. Background technique [0002] Wastewater produced by heavy oil from gas turbines has the characteristics of high CODcr, high oil content, high toxicity, and low B / C ratio, and belongs to difficult industrial wastewater. At present, the treatment methods of this kind of wastewater in China mainly adopt A / O and AA / O processes. These processes mainly use gravity separation and adsorption methods for oily substances. The removal rate of oily substances is only 20-30%, and the treatment effect is not good. It is very ideal, but it brings great difficulties to the subsequent biochemical treatment. Due to the fragile anti-shock load capacity of the biochemical system itself, the limitations of the traditional denitrification reaction mechanism, and the pressure brought by the pretreatment stage, the CODcr degradation of the system e...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 吕敬友王玲秋岳春妹施依娜李群
Owner STATE GRID CORP OF CHINA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com