Process for treating maize oil wastewater

A treatment process, corn oil technology, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, osmosis/dialysis water/sewage treatment, etc., can solve the problems of difficult treatment and large impact of corn oil wastewater, Achieve good treatment effect, improve service life and cycle, and achieve high economic benefits

Inactive Publication Date: 2011-09-21
吕维学
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that corn oil wastewater has a great impact on the environment, and it is difficult to deal with it. At the same time, the ammonia nitrogen and SO contained in the wastewater 4 2- are recyclable resources

Method used

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  • Process for treating maize oil wastewater
  • Process for treating maize oil wastewater

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Experimental program
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Embodiment 1

[0016] A treatment process for corn oil wastewater (see figure 1 ), the process is realized by the following devices, including pretreatment tank 1, a concentrated liquid tank 2, a combined ultrafiltration membrane 3, a concentrated liquid tank 4, a combined nanofiltration membrane 5, a clean water tank 6, and an ammonia nitrogen storage tank 9, SO 4 2- Storage tank 10, circulating pumps 7, 8, and pipes for connection.

[0017] First collect the corn oil wastewater and filter it through the pretreatment tank 1. The pretreatment tank 1 uses sand and gravel as the filler to treat the impurities in the wastewater. The wastewater is initially treated. The treated wastewater enters the first concentrated liquid tank 2 for storage. The one-stage ultrafiltration composite membrane 3 composed of 1000D roll-type ultrafiltration membranes adopts a cross-flow method, ultrafiltration treatment to remove ammonia nitrogen, and the wastewater containing ammonia nitrogen is pumped into the first...

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Abstract

The invention discloses a process for treating maize oil wastewater, and belongs to the technical field of wastewater treatment. A pretreatment tank, a primary-stage concentrated liquor tank, a primary-stage ultrafiltration combined membrane, a secondary-stage concentrated liquor tank and a secondary-stage nanofiltration combined membrane are connected in turn through a pipeline; and circulating pumps are arranged between the primary-stage concentrated liquor tank and the primary-stage ultrafiltration combined membrane, and between the secondary-stage concentrated liquor tank and the secondary-stage nanofiltration combined membrane. By utilizing characteristics of the membranes, ammonia nitrogen and sulfate radicals are separated from the maize oil wastewater so as to facilitate recycling.

Description

Technical field [0001] The invention relates to the field of wastewater treatment, in particular to a treatment process of corn oil wastewater. Background technique [0002] The standard one-stage two-stage reverse osmosis and nanofiltration system in the prior art is mainly used in the fields of boiler feed water desalination, ultra-pure water preparation, industrial water supply, seawater desalination, and sewage reuse. When used in areas with better water quality, reverse osmosis and nanofiltration membranes are less polluted or basically non-pollution. However, in recent years, due to the increasing national requirements for energy conservation and emission reduction, sewage reuse has become a An important application area of ​​nanofiltration. In the production of corn oil, the wastewater produced contains 75% oil, BOD:COD is 1:2, ammonia nitrogen content is 1200PPm, SS is 375, conductivity is 4340us / cm3, SO 4 2- It is 1474PPm. It can be seen that the corn oil wastewater ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/02C02F1/44
Inventor 吕维学吴国敏
Owner 吕维学
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