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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, 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 costs, secondary pollution, etc., and achieve reduction Yield, improve biodegradability, reduce COD effect

Inactive Publication Date: 2013-08-28
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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] 1000 tons / day sewage treatment and recycling project.

[0051] The water quality of the sewage is shown in Table 2.

[0052] Table 2 Water quality of sewage

[0053] 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

[0054] 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

[0068] Deep purification regeneration and recycling project of 5000 tons / day sewage.

[0069] The water quality of the sewage is shown in Table 4.

[0070] Table 4 Water quality of sewage

[0071] 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

[0072] 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

[0086] Deep purification regeneration and recycling project of 10,000 tons / day sewage.

[0087] The water quality of the sewage is shown in Table 6.

[0088] Table 6 Water quality of sewage

[0089] 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

[0090] 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

A device for sewage treatment and regenerative recycling, comprising a biochemical system, an electrolysis system, an MBR system and a deep processing system. A method for sewage treatment and regenerative recycling comprises the following steps: (1) biochemical treatment; (2) electrolysis; (3) MBR system filtering; (4) capacitance desalting and sterilization; (5) sludge treatment. The device and method can overcome the defects in the existing sewage regeneration technology such as that the quality of the regenerated water is poor, it is difficult to meet the water quality requirements for water consumption, the investment is large, the operation cost is high and the secondary pollution to the environment is caused. The sewage discharge can be reduced. The utilization efficiency of water is improved. Meanwhile, the regeneration and recycling of 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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Patent Type & Authority Patents(China)
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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