Method and system for processing salt containing wastewater

A technology for saline wastewater and wastewater treatment, which is applied in water treatment parameter control, chemical instruments and methods, biological water/sewage treatment, etc.

Active Publication Date: 2018-11-06
CHINA SHENHUA ENERGY CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Therefore, it is necessary to provide a method and system for treating saline wastewater to solve the difficult problem of high-salt wastewater in the prior art

Method used

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  • Method and system for processing salt containing wastewater
  • Method and system for processing salt containing wastewater
  • Method and system for processing salt containing wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] COD and COD removal rate were selected as water quality parameters, and optimal TDS was set for the biochemical system containing halophagic bacteria. Specific steps are as follows:

[0072] (1) Pass industrial saline wastewater into activated sludge containing halophilic bacteria, use activated sludge to desalinize the saline wastewater to obtain the first treated wastewater, and gradually increase the salt content in the process of desalination pretreatment The flow rate of waste water, measure the TDS value of saline waste water at different flow rates, and measure the COD value of saline waste water at different flow rates;

[0073] (2) measure the COD of the first treatment waste water that desalination pretreatment obtains under different flows, to obtain the COD value of the first treatment waste water, by utilizing the COD value of the first treatment waste water and the saline waste water measured in step (1) Calculate the COD removal rate of the first treated...

Embodiment 2

[0079] The ammonia nitrogen content and ammonia nitrogen removal rate were selected as water quality parameters, and the optimal TDS was set for the biochemical system containing halophagic bacteria. Specific steps are as follows:

[0080] (1) Pass industrial saline wastewater into activated sludge containing halophilic bacteria, use activated sludge to desalinize the saline wastewater to obtain the first treated wastewater, and gradually increase the salt content in the process of desalination pretreatment The flow rate of waste water, measure the TDS value of saline waste water at different flow rates, and measure the ammonia nitrogen content of saline waste water at different flow rates;

[0081] (2) measure the ammonia nitrogen content of the first treatment waste water that desalination pretreatment obtains under different flows, to obtain the ammonia nitrogen content value of the first treatment waste water, by utilizing the ammonia nitrogen content value of the first tr...

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Abstract

The invention provides a method and system for processing salt containing wastewater. The method comprises following steps: making salt containing wastewater go through active sludge containing salt eating bacteria to use the active sludge to carry out a desalination pretreatment to obtain first processed wastewater, wherein during the desalination pretreatment process, the salt containing wastewater flow is gradually increased, and TDS values of the salt containing wastewater are measured under different flows; measuring the water quality parameters of the first processed wastewater, whereineach water quality parameter has a corresponding preset range, and the TDS value of the corresponding flow, when all water quality parameters are in the present ranges is set to be a first TDS optimized value set; adjusting the flow of salt containing wastewater that is introduced into the active sludge until the TDS value corresponding to the flow of salt containing wastewater falls into the range of the first TDS optimized value set, and carrying on a desalination treatment on salt containing wastewater, wherein the water quality parameters comprises COD and / or ammonia nitrogen content. Theprovided method and system can economically and effectively remove pollutants in salt containing wastewater.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular, the invention relates to a method and a system for treating saline wastewater. Background technique [0002] With the acceleration of my country's industrialization process, high-salt wastewater will be produced in many production areas, such as printing and dyeing, papermaking, chemical industry, pesticides, oil extraction, seafood processing, etc. Such wastewater usually contains high concentrations of organic pollutants and is directly discharged to the environment. Cause serious pollution and damage. If high-salt wastewater seeps into the soil system, soil organisms and plants will die due to dehydration, causing the disintegration of the soil ecosystem, and high-salt wastewater usually contains other high-concentration organic matter or nutrients. If it is not treated directly Discharge will bring greater pressure to the water environment and accelerate the eutrophication p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34
CPCC02F3/34C02F2209/08C02F2209/14
Inventor 娄成杰张红旗高小龙王春萍崔恒玲程玉春
Owner CHINA SHENHUA ENERGY CO LTD
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