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Treatment method of high-salt and high-chroma wastewater

A treatment method and technology for wastewater, applied in the field of water treatment, can solve the problems of difficulty in reducing the chromaticity of wastewater, difficulty in treating wastewater with high salt and high chroma, and achieve the effect of normal resin adsorption effect.

Active Publication Date: 2020-03-24
江苏南大华兴环保科技股份公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of the difficulty in the treatment of existing high-salt and high-chroma wastewater, especially the difficulty in reducing the chroma of wastewater, the present invention provides a treatment method for high-salt and high-chroma wastewater, which uses two-stage resin adsorption and ozone oxidation for pretreatment. Treatment, rationally control the pH of the effluent at each stage, and have a good treatment effect on high-salinity and high-chroma wastewater, and the effluent can be reduced to colorless

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  • Treatment method of high-salt and high-chroma wastewater
  • Treatment method of high-salt and high-chroma wastewater
  • Treatment method of high-salt and high-chroma wastewater

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Embodiment 1

[0039] This embodiment provides a treatment method for high-salt, high-chroma wastewater, the specific steps are as follows:

[0040] (1) Send the collected waste water into the adjustment tank, adjust the pH to be acidic, centrifuge, and send the effluent to the primary resin adsorption tower for a resin adsorption. The resin is an aminated ultra-high cross-linked styrene resin, and the waste water The flow rate is controlled at 10-20BV, and the flow rate is controlled at 1.0-2.0BV / h;

[0041] (2) adjust the pH value of the effluent in (1) to 6;

[0042] (3) the effluent in (2) is passed into the ozone tower, and in the ozone tower, an alumina catalyst is added, taking the water inlet volume as a benchmark, the adding volume ratio of the catalyst is 20%, and the feed concentration of the ozone 5.0mg / min, oxidation treatment time is 30min;

[0043] (4) Regulate (3) middle effluent pH to be alkaline;

[0044](5) Send the effluent in (4) to the secondary resin adsorption towe...

Embodiment 2

[0050] Such as figure 1 As shown, the present embodiment provides a treatment method for high-salt, high-chroma wastewater, and the specific steps are as follows:

[0051] (1) Send the collected waste water into the adjustment pool, adjust the pH value to 2, and carry out centrifugation. The effluent is sent to the primary resin adsorption tower for primary resin adsorption. The resin is an aminated ultra-high cross-linked styrene resin, The waste water flow rate is controlled at 10-20BV, and the flow rate is controlled at 1.0-2.0BV / h;

[0052] (2) adjust the pH value of the effluent in (1) to 5;

[0053] (3) the effluent in (2) is passed into the ozone tower, and in the ozone tower, add titanium dioxide catalyst, take the water inflow volume as a benchmark, the adding volume ratio of the catalyzer is 20%, and the feeding concentration of the ozone is 4.0mg / min, oxidation treatment time is 10min;

[0054] (4) adjust the pH value of the effluent in (3) to 11;

[0055] (5) S...

Embodiment 3

[0063] (1) Send the collected waste water into the adjustment tank, adjust the pH value to 5, and carry out centrifugation. The effluent is sent to the primary resin adsorption tower for resin adsorption. The flow rate is 10-20BV, and the flow rate is 1.0-2.0BV / h;

[0064] (2) adjust the pH value of the effluent in (1) to 8;

[0065] (3) the effluent in (2) is passed into the ozone tower, and in the ozone tower, a manganese dioxide catalyst is added, taking the water inflow volume as a benchmark, the adding volume ratio of the catalyst is 20%, the feeding of the ozone The concentration is 6.0mg / min, and the oxidation treatment time is 30min;

[0066] (4) adjust the pH value of the effluent in (3) to 11;

[0067] (5) Send the effluent in (4) to the secondary resin adsorption tower, and use ultra-high cross-linked styrene resin for secondary resin adsorption treatment. The waste water flow rate is controlled at 40-100BV, and the flow rate is controlled at 2.0-4.0BV / h;

[0068...

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Abstract

Belonging to the technical field of water treatment, the invention discloses a treatment method of high-salt and high-chroma wastewater. The method utilizes two-stage resin adsorption and ozone oxidation for pretreatment, and then adopts MVR quadruple-effect evaporation for distillation; wherein the adsorption conditions of the two-stage resin adsorption are different, the first-stage resin adoptsacidic condition adsorption, and the second-stage resin adopts alkaline condition adsorption. The treatment method has good treatment effect on high-salinity and high-concentration pharmaceutical wastewater, can reduce the chroma, COD and ammonia nitrogen of the wastewater, also can acquire white-like salt, and realizes purification of the wastewater.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and more specifically relates to a treatment method for high-salt and high-chroma wastewater. Background technique [0002] Pharmaceutical companies will produce a large amount of high-salt pesticide organic wastewater. Compared with other wastewater, this wastewater has the following three notable characteristics: 1. The pollutant content in wastewater is generally high, with high chroma and complex components. Direct discharge will cause The acid-base imbalance in the environment leads to pollution of the water body; 2. It contains a large amount of inorganic salts, generally saturated brine, which directly leads to the increase of the salinity of river water quality, brings more and more serious pollution to soil, surface water, and groundwater, and endangers the ecological environment , most of the salts contained are C - , SO4 2- 、Na + Although these ions are essential nutrients f...

Claims

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Application Information

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IPC IPC(8): C02F9/10C02F101/30C02F101/34C02F101/38C02F103/34
CPCC02F1/04C02F1/041C02F1/285C02F1/66C02F1/78C02F9/00C02F2101/306C02F2101/34C02F2101/38C02F2103/343C02F2301/08
Inventor 赵选英程夫苓杨峰刘君君周腾腾王智宁唐为清戴建军
Owner 江苏南大华兴环保科技股份公司
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