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

Soybean wastewater biochemical treatment process and device

A biochemical treatment device, soybean product wastewater technology, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problem of narrow range of low dissolved oxygen and insufficient degradation efficiency of COD and N Ideal and other problems, to achieve the effect of low processing cost

Inactive Publication Date: 2013-04-03
HANGZHOU GREEN ENVIRONMENTAL PROTECTION TECH DEV
View PDF3 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the narrow range of low dissolved oxygen controlled by these processes and devices (0.1-0.5 mg / L), the degradation efficiency of COD and N is not ideal when treating soybean product wastewater with high concentrations of COD and N.

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
  • Soybean wastewater biochemical treatment process and device
  • Soybean wastewater biochemical treatment process and device
  • Soybean wastewater biochemical treatment process and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0047] Embodiment, a certain bean product factory waste water treatment

[0048] The original process and equipment of wastewater treatment are "regulating tank + physical and chemical sedimentation tank + anaerobic tank + aerobic tank + physical and chemical air flotation tank", the effluent ammonia nitrogen and total nitrogen exceed the standard, the sludge output is large, and the treatment cost is high. Apply the present invention to carry out process adjustment practice.

[0049] Adjusted process and equipment: "Regulating pool + UBF pool + EGSB pool + biosynchronous degradation pool".

[0050] Adjusted process and device parameters: UBF pool: biochemical residence time 12h, effluent COD Cr 8450mg / L, COD Cr Removal rate 16%, COD Cr Remove volume load 3.1KgCOD / m 3 .d; EGSB pool: biochemical residence time 26h, pH6.8, effluent COD Cr 1960mg / L, COD Cr 77% removal rate, COD Cr Remove volume load 6.0KgCOD / m 3 .d; Biological synchronous degradation tank: biochemical res...

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 a soybean wastewater biochemical treatment process and a soybean wastewater biochemical treatment device. The process comprises the following steps and the device comprises the following composition that wastewater sequentially flows through a regulating tank, a hydrolysis acidification pool, an anaerobic tank, a biological synchronous degradation tank and a sludge-water separation device; by the hydrolysis acidification pool, particles and macromolecules are hydrolyzed into soluble substances and COD (Chemical Oxygen Demand) degradation is carried out; when methane is generated in the anaerobic tank, COD degradation is carried out in the anaerobic tank; the biological synchronous degradation tank adopts low dissolved oxygen aeration to carry out synchronous degradation of COD and N; mixed solution at the tail end of the biological synchronous degradation tank flows back to the water inlet end and part of the mixed solution is lifted to the sludge-water separation device; clear water subjected to sludge-water separation reaches the standard and is discharged, sludge flows back to the water inlet end of the hydrolysis acidification pool; and residual sludge is discharged into a sludge treatment system. The soybean wastewater biochemical treatment process and the soybean wastewater biochemical treatment device has the benefits that the whole biochemical treatment process and the biological synchronous degradation of COD and N are adopted; treated effluent reaches the A-level emission standard of 'Integrated Wastewater Discharge Standard'(GB8978-1996); and the soybean wastewater biochemical treatment process and the soybean wastewater biochemical treatment device solve the problems that in the soybean wastewater treatment, N exceeds the standard, the sludge quantity is large and cost is high.

Description

technical field [0001] The invention relates to a wastewater treatment process and device, in particular to a biochemical treatment process and device for bean product wastewater, which is a process and device for synchronously degrading COD and N in bean product wastewater by using microorganisms. Background technique [0002] Soy product wastewater is the wastewater generated during the processing of soybeans into soybean products. The main components of soybean product wastewater are: yellow swill, soaking water, and flushing wastewater; the main pollutant components of soybean product wastewater are: bean dregs, oil, protein, and fiber polysaccharides. The main characteristics of soybean product wastewater are: the concentration of COD and N is very high, and the COD of comprehensive wastewater Cr 5500~10000mg / L, BOD 5 3000~5000mg / L, total nitrogen 200~500mg / L. Substandard discharge of soybean product wastewater treatment will lead to eutrophication of the water body ...

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): C02F9/14
Inventor 奕锦伟张淼佳刘慧
Owner HANGZHOU GREEN ENVIRONMENTAL PROTECTION TECH DEV
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