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Apparatus for integrated treatment and comprehensive utilization of wastewater and use thereof

A biochemical treatment tank and wastewater technology, applied in the direction of water/sewage multi-stage treatment, water/sludge/sewage treatment, flocculation/sedimentation water/sewage treatment, etc., can solve the problem of no comprehensive utilization, low controllability, and wastewater Incorporate problems such as comprehensive sewage plants to achieve the effect of preventing blockage and reducing load

Inactive Publication Date: 2009-06-24
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the wastewater is connected to the urban sewage treatment plant through the municipal pipe network for centralized treatment. However, due to many special reasons, there are still the following problems in wastewater treatment: 1. The sewage pipe network in the area where some new projects are located is not perfect, and the wastewater cannot Incorporate into comprehensive sewage plant for treatment; 2. Water resources are very scarce in the world today. Many enterprises must develop circular economy due to the national policy of energy conservation and emission reduction. Therefore, they hope to reuse wastewater after treatment to save costs and create economic benefits.
This equipment also ignores the problem of sludge disposal, and the process is single and the scope of application is small
[0006] Although there are many processes and equipment for wastewater treatment, most of them currently have the following problems: ① The integration of equipment is low and the controllability is low
②There is no comprehensive utilization of wastewater after treatment, especially the lack of sludge disposal measures

Method used

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  • Apparatus for integrated treatment and comprehensive utilization of wastewater and use thereof
  • Apparatus for integrated treatment and comprehensive utilization of wastewater and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] Example 1: Integrated treatment and reuse of comprehensive sewage in a machinery factory

[0071] A machinery factory built a new factory building, and the new factory building area does not have the conditions to receive sewage for the time being, and the comprehensive sewage needs to be treated before reuse. Its sewage discharge is about 25t / d, wastewater parameters pH: 6.5-8; COD: 200-600mg / L; BOD: 100-300mg / L; ammonia nitrogen: 30-50mg / L; SS: 100-300mg / L; Wastewater contains a lot of oil. For the waste water integrated treatment and reuse device provided by the present invention, please refer to the attached figure 2 , its equipment and technological process are as follows:

[0072] (1) Wastewater enters the integrated equipment, which is made of carbon steel, and the outer layer of the equipment is equipped with an insulation layer made of polyurethane sandwich panels. The design wastewater treatment capacity is 30t / d. The waste water first passes through the ...

Embodiment 2

[0076] Example 2: Integrated treatment and comprehensive utilization of wastewater from a restaurant

[0077] A restaurant located in a scenic area produces wastewater of about 15t / d, pH: 6-8; COD: 1000~1600mg / L; ammonia nitrogen: 100~150mg / L; SS: 20~250mg / L, in the wastewater Contains a lot of animal and vegetable oils. Utilize technique and equipment of the present invention to carry out the technological process of wastewater treatment as follows:

[0078] (1) Wastewater enters the integrated equipment, which is made of glass fiber reinforced plastics, and the outer layer of the equipment is equipped with a polystyrene sandwich panel insulation layer. Its design capacity is 10t / d. Sewage first passes through the inclined plate grease trap to remove animal and vegetable oils on the surface of the wastewater, with a removal rate of 65-80%. Grease is collected regularly and delivered away. The wastewater then enters the adjustment tank, and the pH is adjusted to 6-8 by add...

Embodiment 3

[0082] Example 3 Integrated treatment and resource utilization of comprehensive wastewater in a new school

[0083] A newly built school produces about 90t / d of comprehensive wastewater, pH: 6-8; COD: 450-700mg / L; ammonia nitrogen: 150-300mg / L; SS: 150-400mg / L. Wastewater contains a large amount of edible oil. Utilize technique and equipment of the present invention to carry out the technological process of wastewater treatment as follows:

[0084] (1) Wastewater enters the integrated equipment pool made of carbon steel, and the surface of the equipment is equipped with an insulation layer of rock wool sandwich panel material. Its design sewage treatment capacity is 100t / d. The waste water first passes through the flat grease trap to remove more than 60% of the grease, and is collected and recycled regularly; then it enters the regulating pool to adjust the pH and water volume.

[0085](2) The waste water then enters the MBR biochemical treatment tank equipped with a membra...

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Abstract

The invention relates to a wastewater integrated treatment and comprehensive utilization device and application thereof. A method for the wastewater integrated treatment and comprehensive utilization comprises the following steps: firstly leading the wastewater into an oil interceptor tank and then into an equalizing tank; leading the wastewater after neutralization regulation into a biochemical treatment tank where a sump pump and an aeration device are arranged; leading the wastewater after the biochemical treatment into a sedimentation tank; leading the sedimentated wastewater into a filter tank with built-in filler for the filtration treatment of the wastewater; arranging a back flushing device or filtering material regeneration device beside the filter tank; leading the water outputted from the filter device into an advanced treatment tank to obtain the reclaimed water up to the standards; leading the reclaimed water into a reclaimed water tank where a liquid level controller is arranged for controlling the liquid level; and lifting the rest sludge in the sedimentation tank to a sludge drying compost tank, and carrying out the moderate temperature and high temperature composting of the rest sludge through a temperature controlled heating device. The integrated device is enveloped by an insulating layer formed by polyurethane sandwich boards. The invention provides an integrated device which has the advantages of modularized unit structure, high treatment efficiency, strong self control, wide adaptability, less investment and convenient motion and transportation.

Description

technical field [0001] The invention belongs to the technical fields of chemical industry and environmental protection, and relates to technologies and devices for wastewater treatment and comprehensive utilization, in particular to a process and an integrated device for treating wastewater up to standard and further comprehensive utilization. Background technique [0002] Wastewater is ubiquitous in industrial production and life. According to national laws and regulations on environmental protection, waste water must be treated to meet national standards before it can be discharged. At present, most of the wastewater is connected to the urban sewage treatment plant through the municipal pipe network for centralized treatment. However, due to many special reasons, there are still the following problems in wastewater treatment: 1. The sewage pipe network in the area where some new projects are located is not perfect, and the wastewater cannot Incorporate into comprehensive s...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F1/40C02F1/52C02F3/30C05F17/00
CPCY02W30/40
Inventor 赵伟荣杨勇鲍家泽郝睿刘菲菲谈敏
Owner ZHEJIANG UNIV
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