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Recycle system for recycled water

A technology for reclaimed water and sewage, applied in the direction of neutralized water/sewage treatment, water/sewage treatment, mining wastewater treatment, etc., can solve the problems of reverse osmosis membrane being easily blocked, high SS content, unusable, etc., and achieve turbidity High, high SS content, the effect of improving efficiency

Active Publication Date: 2012-12-19
江苏艾特克环境工程有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the particularity of copper mine wastewater, especially copper mine beneficiation wastewater, that is, high concentration of heavy metal elements, high turbidity, deep color and high SS content, the aforementioned general reclaimed water reuse treatment system cannot be used
Pretreatment + filtration or ultrafiltration cannot prepare for reverse osmosis treatment, resulting in various problems such as reverse osmosis membrane being easily blocked or broken down in the reverse osmosis treatment stage

Method used

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  • Recycle system for recycled water

Examples

Experimental program
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Effect test

Embodiment 1

[0021] The influent water to be treated is a copper mine beneficiation wastewater, and its water quality is as follows: pH: 11.5, Cu 284mg / L, Pb 6.6mg / L, COD 410mg / L, turbidity 115NTU, SS 1200mg / L.

[0022] The incoming water first enters the pH adjustment tank, and uses hydrochloric acid (HCl) to adjust the pH value of the sewage to about 7.2. The water then enters the electrolytic precipitation tank, which uses aluminum as the anode and steel as the cathode. And a magnetic field with a magnetic induction strength of 2500 Gauss is applied in a direction parallel to the electrode surface. The water entering the electrolytic precipitation tank stays in the tank for 30 minutes, the supernatant enters the next processing unit, and the sludge is discharged to the sludge tank, where it is washed, dehydrated, etc., and finally the sludge is recycled.

[0023] The supernatant liquid discharged from the electrolytic precipitation tank enters the heat exchange device through the inter...

Embodiment 2

[0030] The influent water to be treated is a copper mine beneficiation wastewater, and its water quality is as follows: pH: 12.1, Cu 220mg / L, Pb 8.5mg / L, COD 435mg / L, turbidity 100NTU, SS 1100mg / L.

[0031] The incoming water first enters the pH adjustment tank, and uses hydrochloric acid (HCl) to adjust the pH value of the sewage to about 7.2. The water then enters the electrolytic precipitation tank, which uses iron as the anode and steel as the cathode. And a magnetic field with a magnetic induction strength of 2500 Gauss is applied in a direction parallel to the electrode surface. The water entering the electrolytic precipitation tank stays in the tank for 30 minutes, the supernatant enters the next processing unit, and the sludge is discharged to the sludge tank, where it is washed, dehydrated, etc., and finally the sludge is recycled.

[0032] The supernatant liquid discharged from the electrolytic precipitation tank enters the heat exchange device through the intermedi...

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Abstract

The invention provides a recycle system for recycled water for copper mine wastewater. The system mainly comprises the following treatment units such as a pH adjusting pond, an electrolytic sedimentation tank, a heat exchanger, an active carbon filter, a cartridge filter and a reverse osmosis (RO) device. Specifically, the pH adjusting pond is used for adjusting the pH value of wastewater to be neutral. A magnetic field is applied in the process of electrolysis, wherein the magnetic field is parallel to the direction of the surface of an electrode. The water treated by the electrolytic sedimentation tank enters into the heat exchanger through an intermediate water tank and an intermediate water pump. The water outlet and inlet active carbon filter is used for further removing the SS (suspended solids), the colloid, the organic substances and the like in the water. The discharged water of the active carbon filter enters into the cartridge filter, so that the impurities such as fine particles and the like in the water can be further removed. The product water of the RO device flows into a recycle water tank to be recycled after being sterilized by a sterilizer, the crystal substance can be recycled after the concentrate of RO is evaporated by a triple effect evaporator, and the condensate also can enter into the recycle water tank to be recycled.

Description

technical field [0001] The invention relates to a reclaimed water reuse system, in particular to a reclaimed water recycle system for copper ore dressing wastewater treatment. Background technique [0002] At present, the general reclaimed water reuse system includes several treatment units such as pretreatment + filtration or ultrafiltration + reverse osmosis treatment. The general sewage can meet the reuse requirements after these several treatment steps. [0003] Wastewater from copper mines cannot be recycled directly. Discharge into water bodies will acidify the water quality, poison the soil, cause vegetation to wither, die, kill or inhibit the growth of microorganisms, and hinder the self-purification of water bodies. Wastewater containing heavy metal ions is more harmful to the environment. Therefore, how to eliminate the harm of copper mine wastewater has become a problem that must be considered when mining copper mines in our country. Copper mine wastewater is mai...

Claims

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Application Information

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IPC IPC(8): C02F9/12C02F9/10C02F1/463C02F1/48C02F1/66C02F1/02C02F1/28C02F1/44C02F1/32C02F1/04C02F103/10
Inventor 周亚强吴园文潘翼还春祥
Owner 江苏艾特克环境工程有限公司
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