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Sewage treatment and regeneration cyclic utilization device and sewage treatment and regeneration cyclic utilization method

A sewage treatment and sludge treatment technology, which is applied in water/sewage treatment, biological water/sewage treatment, light water/sewage treatment, etc., can solve the problems of poor quality of regenerated water, high operating cost, and difficult to meet, so as to reduce production , Improve biodegradability and improve efficiency

Inactive Publication Date: 2012-09-19
BOYING XIAMEN SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems existing in the existing sewage regeneration and recycling technology, and provide a method that can overcome the poor quality of regenerated water in the existing sewage regeneration technology, which is difficult to meet the water quality requirements of industrial production process water, and has large investment and operating costs. It is a sewage treatment device that can reduce sewage discharge and improve water utilization efficiency due to defects such as high and secondary pollution to the environment.

Method used

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  • Sewage treatment and regeneration cyclic utilization device and sewage treatment and regeneration cyclic utilization method
  • Sewage treatment and regeneration cyclic utilization device and sewage treatment and regeneration cyclic utilization method
  • Sewage treatment and regeneration cyclic utilization device and sewage treatment and regeneration cyclic utilization method

Examples

Experimental program
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Effect test

Embodiment 1

[0051] 1000 tons / day sewage treatment and recycling project.

[0052] The water quality of the sewage is shown in Table 2.

[0053] Table 2 Water quality of sewage

[0054] serial number project unit measured value serial number project unit measured value 1 COD Cr mg / L 350 5 Turbidity NTU 19 2 BOD 5 mg / L 180 6 Chroma times 50 3 SS mg / L 270 7 pH — 7.5 4 TN mg / L 30 8 Conductivity μS / cm 380

[0055] Step 1. Biochemical treatment: Sewage enters the biochemical system through the interception well 1, and then passes through the coarse screen 2, lifting pump 3, fine screen 4, grit chamber 5, primary water distribution well 6, primary sedimentation tank 7, and biological treatment equipment 8. The treatment of the secondary water distribution well 9 and the secondary sedimentation tank 10, so that all indicators can reach the third-level discharge standard of GB 18918-2002 "Pollutant Discharge ...

Embodiment 2

[0069] Deep purification regeneration and recycling project of 5000 tons / day sewage.

[0070] The water quality of the sewage is shown in Table 4.

[0071] Table 4 Water quality of sewage

[0072] serial number project unit measured value serial number project unit measured value 1 COD Cr mg / L 289 5 Turbidity NTU 16 2 BOD 5 mg / L 114 6 Chroma times 80 3 SS mg / L 250 7 pH — 7.4 4 TN mg / L 42 8 Conductivity μS / cm 510

[0073] Step 1. Biochemical treatment: Sewage enters the biochemical system through the interception well 1, and then passes through the coarse screen 2, lifting pump 3, fine screen 4, grit chamber 5, primary water distribution well 6, primary sedimentation tank 7, and biological treatment equipment 8. The treatment of the secondary water distribution well 9 and the secondary sedimentation tank 10, so that all indicators can reach the third-level discharge standard of GB 18918-20...

Embodiment 3

[0087] Deep purification regeneration and recycling project of 10,000 tons / day sewage.

[0088] The water quality of the sewage is shown in Table 6.

[0089] Table 6 Water quality of sewage

[0090] serial number project unit measured value serial number project unit measured value 1 COD Cr mg / L 259 5 Turbidity NTU 15 2 BOD 5 mg / L 99 6 Chroma times 80 3 SS mg / L 300 7 pH — 7.7 4 NH 3 -N mg / L 45 8 Conductivity μS / cm 440

[0091] Step 1. Biochemical treatment: Sewage enters the biochemical system through the interception well 1, and then passes through the coarse screen 2, lifting pump 3, fine screen 4, grit chamber 5, primary water distribution well 6, primary sedimentation tank 7, and biological treatment equipment 8. The treatment of the secondary water distribution well 9 and the secondary sedimentation tank 10, so that all indicators can reach the third-level discharge standard of GB 1...

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Abstract

The invention relates to a sewage treatment and regeneration cyclic utilization device, which is provided with a biochemical system, an electrolysis system, a membrane biological reactor (MBR) system and a deep processing system. A sewage treatment and regeneration cyclic utilization method comprises the following steps of (1) biochemical treatment; (2) electrolysis; (3) MBR system filtering; (4) capacitance desalting and sterilization; and (5) sludge treatment. The device and the method can overcome the defects that in the existing sewage regeneration technology, the quality of the regeneration water is poor, the water consumption water quality requirements are difficult to meet, the investment is high, the operation cost is high, the secondary pollution is caused on the environment, and the like. The sewage discharge can be reduced, the utilization efficiency of the water is improved, meanwhile, the regeneration and the reutilization on the sludge are realized, and the harm possibly caused by the sludge to the environment is eliminated.

Description

technical field [0001] The invention relates to a sewage treatment and recycling device and method thereof, belonging to the field of environmental protection. Background technique [0002] The problem of water resources and environmental pollution has been increasingly valued by human society. On the one hand, the amount of fresh water is increasing, and water resources are becoming increasingly scarce. On the other hand, the amount of sewage discharge is increasing, and the environmental pollution is becoming more and more serious. It has received more and more attention from various countries. China is a country seriously short of water resources. The per capita fresh water resources are only a quarter of the world's average level. It is one of the 13 most water-deficient countries in the world. More than 400 cities are short of water, so the recycling of sewage has become the key to solving the shortage of fresh water resources. However, most of the current sewage trea...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F11/12
CPCC02F11/12C02F1/76C02F9/00C02F11/006C02F1/4691C02F1/32C02F1/4672C02F2303/06C02F3/1273Y02W10/10
Inventor 张世文许雅玲赵玉琴杨幼军
Owner BOYING XIAMEN SCI & TECH
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