Treatment method for saline wastewater

A technology for salty wastewater and treatment methods, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve problems such as increased operating costs, and achieve high operating costs and simple processes Ease of operation, effect of reducing emissions

Inactive Publication Date: 2013-11-27
JIANGSU LASON CHEM ENVIRONMENTAL PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If micro-electrolytic reduction technology is adopted, physical and chemical pretreatment technologies such as fenton oxidation will inevitably bring about an increase in operating costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Pass the saline wastewater with a salt content of 1wt% into the regulating tank, adjust the pH value to 7.5; control the water temperature at 25-35°C and add Pseudomonas aureogenes and Pseudomonas chlorophylla to the water body to perform the first-level anaerobic After 24 hours of biochemical reaction, the amount of Pseudomonas aureus and Pseudomonas chlorophyllus added is 0.03wt% of the saline wastewater; continue to pass the water into the reaction tank, adjust the pH to 7, and control the water temperature at 25-35°C to add fermented milk Bacillus and Gluconobacter oxidans, carry out aerobic reaction for 24 hours, and the amount of Lactobacillus fermentum and Gluconobacter oxidans added is 0.06wt% of the saline wastewater; the reacted water body is subjected to MVR mechanical evaporation, and then exported to the reaction tank for recovery.

Embodiment 2

[0024] Pass the saline wastewater with a salt content of 3wt% into the adjustment tank, adjust the pH value to 8.5; control the water temperature at 25-35°C and add Pseudomonas chlorophyll, Pseudomonas nitric acid reduction and Pseudomonas riboflavin to the water body Bacteria, carry out the first-level anaerobic biochemical reaction for 36 hours, the amount of compound salt-tolerant bacteria added is 0.10wt% of the saline wastewater; continue to pass the water into the reaction tank, adjust the pH to 8, control the water temperature at 25-35°C and add gamboge Micrococcus and Micrococcus halo, carry out aerobic reaction for 36 hours, the addition amount of Micrococcus luteus and Micrococcus halo is 0.08wt% of the saline wastewater; the water body after the reaction is subjected to MVR mechanical evaporation and exported to the reaction pool for recovery. use.

Embodiment 3

[0026] Pass the saline wastewater with a salt content of 5wt% into the adjustment tank, adjust the pH value to 9.5; control the water temperature at 25-35°C and add Pseudomonas nitric acid reduction and Pseudomonas riboflavin to the water body to conduct a first-level For 48 hours of anaerobic biochemical reaction, the amount of Pseudomonas nitric acid reduction and Pseudomonas riboflavin added is 0.14wt% of the saline wastewater; the water body is continuously passed into the reaction tank, the pH is adjusted to 8.5, and the water temperature is controlled at 25-35 Add Micrococcus halo and Lactobacillus fermentum at ℃, and carry out aerobic reaction for 48 hours. The amount of Micrococcus halo and Lactobacillus fermentum added is 0.12wt% of the saline wastewater; then add 0.02wt% of Micrococcus halo to the water body The secondary aerobic reaction with Lactobacillus fermentum was carried out for 12 hours; the reacted water was mechanically evaporated by MVR and exported to the...

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Abstract

The invention discloses a treatment method for saline wastewater. The treatment method comprises the steps as follows: introducing saline wastewater into a regulation tank, and regulating the pH value to 7.5-9.5; adding salt-tolerant compound bacteria to a water body, performing a primary anaerobic biochemical reaction, damaging the structures of organic substances in the saline wastewater, and degrading partial organic substances; continuously introducing the water body into a reaction tank, regulating the pH value to 7-9, adding the salt-tolerant compound bacteria, and performing an aerobic reaction; performing MVR mechanical vaporization subjected to the reaction to the water body, and then leading out the water body from the reaction tank for recovering and standby. The treatment method adopts specific sequential process degradation steps in order, not only has a very good treatment effect, but also is simple in each individual treatment step, is convenient to operate and easy to implement, and does not generate extra hazardous solid waste.

Description

technical field [0001] The invention belongs to the field of environmental protection, and in particular relates to a treatment method for salty wastewater. Background technique [0002] The treatment of saline chemical wastewater has always been the difficulty and focus of chemical wastewater treatment. The high salt content determines that it cannot be directly treated by biochemical treatment. Refractory and toxic characteristics determine the need for physical and chemical pretreatment technology. [0003] In view of the characteristics of high salt, the commonly used treatment methods are: evaporation process and dilution method, in which the evaporation process is placed in the first stage of wastewater treatment, because the wastewater contains various organic components, which will lead to the return of evaporated stills There is a large amount of organic matter, and the kettle residue can only be treated as hazardous solid waste, which increases the cost of operati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 蒋伟群高峰徐林兰王帅
Owner JIANGSU LASON CHEM ENVIRONMENTAL PROTECTION
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