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

Method for treatment of pickling wastewater with dunaliella salina and halophilic bacteria

A technology for pickling wastewater and halophilic bacteria, which is applied in chemical instruments and methods, food industry wastewater treatment, biological water/sewage treatment, etc. low effect

Inactive Publication Date: 2019-06-25
JIANGSU UNIV
View PDF10 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this method, halophilic bacteria adapted to pickling wastewater are first domesticated, and then added to anaerobic and aerobic stages to jointly degrade pickling wastewater. However, the degradation of pickling wastewater depends entirely on the characteristics of halophilic bacteria, and requires anoxic and aerobic conditions. Segmented degradation, the degradation effect of this type of method is limited

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
  • Method for treatment of pickling wastewater with dunaliella salina and halophilic bacteria

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Adjust the pH of the pickling wastewater to 8.0, filter and clarify, remove suspended particles, and improve the turbidity of the water body; the salinity of the wastewater after pretreatment is 106 g / L, the concentration of total phosphorus is 76.15 mg / L, and the concentration of total nitrogen is 638.24 mg / L, the concentration of ammonia nitrogen is 153.47mg / L;

[0027] Configure bacteria and algae culture medium, which contains the following components in 1 L: 1 g C 6 h 12 o 6 , 100 g NaCl, 0.1 g KNO 3 , 0.1 g NaHCO 3 , 0.01 g CaCl 2 , 0.1 g MgSO 4 ·7H 2 O, 0.1 g KCl, 0.01 g KH 2 PO 4 , 0.001 g Na 2 EDTA·2H 2 O and 0.001 g FeCl 3 ·6H 2 O, the pH of the bacteria and algae culture medium is 8; the bacteria and algae culture medium is mixed with the pretreated waste water of 30% volume percentage concentration to obtain domestication medium A, and the bacteria and algae culture medium is mixed with the pretreatment of volume percentage concentration 80% Af...

Embodiment 2

[0030] Adjust the pH of the pickling wastewater to 7.0, filter and clarify, remove suspended particles, and improve the turbidity of the water body; the salinity of the wastewater after pretreatment is 182 g / L, the concentration of total phosphorus is 79.97 mg / L, and the concentration of total nitrogen is 647.79 mg / L, the ammonia nitrogen concentration is 186.98mg / L.

[0031] Configure bacteria and algae culture medium, which contains the following components in 1 L: 5 g C 6 h 12 o 6 , 180 g NaCl, 0.5 g KNO 3 , 0.5 g NaHCO 3 , 0.05 g CaCl 2 , 0.5 g MgSO 4 ·7H 2 O, 0.5 g KCl, 0.05 g KH 2 PO 4 , 0.005 gNa 2 EDTA·2H 2O and 0.005 g FeCl 3 ·6H 2 O, the pH of the bacteria and algae culture medium is 7; the bacteria and algae culture medium is mixed with the pretreated pickling wastewater with a volume percentage concentration of 40% to obtain the domestication medium C, and the bacteria and algae culture medium is mixed with the volume percentage concentration of 60% fo...

Embodiment 3

[0034] Adjust the pH of the pickling wastewater to 6.0, filter and clarify, remove suspended particles, and improve the turbidity of the water body; the salinity of the wastewater after pretreatment is 243 g / L, the concentration of total phosphorus is 83.15 mg / L, and the concentration of total nitrogen is 657.98 mg / L, the ammonia nitrogen concentration is 196.53mg / L.

[0035] Configure bacteria and algae culture medium, which contains the following components in 1 L: 10 g C 6 h 12 o 6 , 250 g NaCl, 1 g KNO 3 , 1 g NaHCO 3 , 0.1 g CaCl 2 , 1 g MgSO 4 ·7H 2 O, 1 g KCl, 0.1 g KH 2 PO 4 , 0.01 g Na 2 EDTA·2H 2 O and 0.01 g FeCl 3 ·6H 2 O, the pH of the bacteria and algae medium is 6; the bacteria and algae medium is mixed with the pretreated pickling waste water of 30% concentration by volume to obtain domestication medium A, and the bacteria and algae medium is mixed with the pretreatment of 60% concentration by volume After the pickling wastewater was mixed to obta...

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 technical field of industrial wastewater treatment, in particular to a method for treatment of pickling wastewater with dunaliella salina and halophilic bacteria. The method includes: pretreatment of pickling wastewater, gradient acclimation of medium, construction of a bacterial-algal symbiotic system and collection of bacteria and algae. The method provided by the invention can effectively remove nitrogen, phosphorus and total nitrogen content in pickling wastewater, is not restricted by the salt concentration of wastewater during degradation treatment of high-salt wastewater, and has good nitrogen and phosphorus removal effect on pickling wastewater; the method is free of anaerobic or aerobic condition restriction, has no need for additional oxygen supply equipment, and also is independent of additional carbon sources; only under appropriate illumination and temperature conditions, can a good degradation effect be achieved; and the method has the advantages of low operating cost, green and environmental protection, etc.

Description

technical field [0001] The invention relates to the technical field of industrial wastewater treatment, in particular to a method for treating pickling wastewater by using salina and halophilic bacteria. Background technique [0002] The wastewater generated during the production and processing of pickled food mainly comes from elutriation, pressing, pickling and ground washing. The salt dehydration process commonly used in the pickling process will produce a large amount of high-salt brine, and the suspended solids in the pickling wastewater , total nitrogen, ammonia nitrogen, and total phosphorus concentrations all seriously exceeded the standard. [0003] At present, most of the microorganisms used in conventional biological water treatment processes are non-halophilic microorganisms, and the activity of such microorganisms gradually decreases with the increase of salinity. At high salinity, the dehydrogenase activity of microorganisms will decrease sharply, and the osmo...

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): C02F3/32C02F103/32C02F101/16C02F101/10
Inventor 储金宇钱斌高恶斌储烨徐怡陈明鲁力
Owner JIANGSU UNIV
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