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High-salt wastewater treatment reuse system and method

A high-salt wastewater recycling treatment technology, which is applied in the field of wastewater recycling systems and high-salt wastewater recycling systems, can solve the problems of low purification rate of wastewater recycling and treatment, achieve load reduction, reduce carbonate hardness, and protect normal operation Effect

Pending Publication Date: 2017-05-31
青岛锦龙弘业环保有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the problems existing in the background technology, the object of the present invention is to provide a method for recycling high-salt wastewater, which solves key technical problems such as low purification rate in the current wastewater recycling treatment

Method used

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  • High-salt wastewater treatment reuse system and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Collect 1000L of raw water into the adjustment tank, use a lift pump to place it in the sedimentation tank, add 180mg of lime, 18mg of polyaluminum chloride, and 0.8mg of polyacrylamide per liter of raw water for precipitation, and 985L of upper clear water enters the clear water tank for storage. After that, add hydrochloric acid to adjust the pH to 8, and drain the generated sludge; use the water inlet pump to lift the effluent from the clear water tank into a 150μm self-cleaning filter, and obtain 970L of produced water, and get backwashed water to enter the regulating tank for circulation;

[0036] The obtained product water enters the ultrafiltration device, and the obtained 873L ultrafiltration product water enters the ultrafiltration product water tank, and the backwash water is obtained and enters the regulating tank for circulation treatment;

[0037] The 873L water in the ultrafiltration water tank was raised by the high-pressure pump to the first-stage reverse...

Embodiment 2

[0039] Collect 1500L of raw water into the adjustment tank, use a lift pump to place it in the sedimentation tank, add 150mg of lime, 15mg of polyaluminum chloride, and 0.5mg of polyacrylamide per liter of raw water for precipitation, and 1485L of upper clear water enters the clear water tank for storage. After that, add hydrochloric acid to adjust the pH to 8.5, and drain the generated sludge; use the water inlet pump to lift the effluent from the clear water tank into a 150 μm self-cleaning filter, and obtain 1470 L of produced water, and the obtained backwash drainage enters the regulating tank for recycling treatment;

[0040] The obtained permeated water enters the ultrafiltration device, and 1337L of ultrafiltered permeated water enters the ultrafiltration permeated water tank, and the obtained backwash water enters the regulating tank for circulation treatment;

[0041] The 1337L water in the ultrafiltration water production pool was raised by a high-pressure pump to the...

Embodiment 3

[0043] Collect 800L of raw water into the adjustment tank, use a lift pump to place it in the sedimentation tank, add 200mg of lime, 20mg of polyaluminum chloride, and 1mg of polyacrylamide to each liter of raw water for precipitation, and 789L ​​of upper clear water enters the clean water tank for storage. Add hydrochloric acid to adjust the pH to 9, and drain the generated sludge; use the water inlet pump to lift the effluent from the clear water tank into a 150μm self-cleaning filter, and obtain 785L of produced water, and the obtained backwash water enters the regulating tank for recycling;

[0044] The obtained permeated water enters the ultrafiltration device, and 722L of ultrafiltered permeated water enters the ultrafiltration permeated water tank, and the obtained backwash water enters the regulating tank for circulation treatment;

[0045] The 722L water in the ultrafiltration water production pool was raised by the high-pressure pump to the first-stage reverse osmosis...

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Abstract

The invention discloses a high-salt wastewater treatment reuse system and method. The system comprises a regulating tank, a precipitation tank, a clean water tank, a self-cleaning filter, an ultrafiltration device, a primary reverse osmosis unit and a secondary reverse osmosis unit, wherein the regulating tank is used for balancing the water quality and avoiding the precipitate; the precipitation tank is connected with the regulating tank, and used for precipitating water from the regulating tank; the clean water tank is connected with the precipitation tank, and used for regulating the pH value of upper clean water in the precipitation tank; the self-cleaning filter is connected with the clean water tank, and used for filtering the water from the clean water tank; the ultrafiltration device is connected with the self-cleaning filter, and used for carrying out ultrafiltration on the produced water from the self-cleaning filter; the primary reverse osmosis unit is connected with the ultrafiltration device, and used for carrying out primary reverse osmosis treatment on the produced water from the ultrafiltration device; and the secondary reverse osmosis unit is connected with the primary reverse osmosis unit, and used for carrying out secondary reverse osmosis treatment on the produced water of the primary reverse osmosis unit, thereby obtaining the reused produced water. The system can effectively lower the carbonate hardness and remove partial organic matters and colloids. The system has the advantages of high desalting rate and high recovery rate.

Description

technical field [0001] The invention relates to a waste water recycling system and method, in particular to a high-salt waste water recycling system and method, belonging to the field of sewage treatment. Background technique [0002] With industrial progress and social development, water pollution is becoming more and more serious. Water pollution seriously affects people's lives and endangers human health. In order to make the sewage meet the drainage requirements or the water quality requirements for reuse, sewage purification treatment must be carried out. In addition, the preciousness and lack of water resources also make the reuse of sewage after treatment inevitable, and the demand is increasing, especially for those areas where fresh water resources are scarce, such as islands and deserts. Sewage treatment is widely used in construction, agriculture, transportation, energy, petrochemical, medical, catering and other fields. At present, there are many methods of se...

Claims

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Application Information

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IPC IPC(8): C02F9/04
CPCC02F9/00C02F1/283C02F1/001C02F1/441C02F1/444C02F1/56C02F1/66C02F1/50C02F1/5281C02F1/5236C02F1/70C02F5/08C02F5/086C02F2301/08
Inventor 胡娜郭海峰
Owner 青岛锦龙弘业环保有限公司
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