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Reactor for integrally treating deeply-dehydrated sludge water and concentrated and dehydrated sludge water

A technology of concentrated dehydration and deep dehydration, applied in chemical instruments and methods, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of lower pollutant removal efficiency, low available phosphorus content, and unfavorable resource utilization Use and other problems to achieve the effect of improving the removal effect and increasing the phosphorus content

Active Publication Date: 2014-05-07
HUADIAN WATER TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the suspended solids in the concentrated dewatered sludge water are relatively high, and the direct mixing of the two sludge waters will not only reduce the pollutant removal efficiency, but also have a low content of available phosphorus in the formed solids, which is not conducive to resource utilization

Method used

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  • Reactor for integrally treating deeply-dehydrated sludge water and concentrated and dehydrated sludge water
  • Reactor for integrally treating deeply-dehydrated sludge water and concentrated and dehydrated sludge water

Examples

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Embodiment 1

[0023] Reactor for integrated treatment of deep dewatered sludge water and concentrated dewatered sludge water, such as figure 1 As shown, the reactor includes an integrated filter unit A, a mixing reaction unit B and a precipitation unit C. The filter unit A is provided with a concentrated dewatered sludge water inlet 1, a concentrated dewatered sludge water outlet 2, and a filter unit. Component 3 and concentrated dewatered sludge water filter outlet 4, mixing reaction unit B is provided with deep dewatered sludge water inlet 5 and agitator 6, sedimentation unit C is provided with sediment collection port 8 and purified sludge water outlet 7; The concentrated dewatered sludge water inlet 1 and the concentrated dewatered sludge water outlet 2 are arranged on the lower side of the filter assembly 3 , and the concentrated dewatered sludge water filter outlet 4 is arranged on the upper side of the filter assembly 3 . The filter assembly 3 is a filter net. The filter screen is a...

Embodiment 2

[0029] Utilizing the reactor for the integrated treatment of deep dewatered sludge water and concentrated dewatered sludge water described in Example 1, a field test of deep dewatered sludge water treatment concentrated dewatered sludge water was carried out at Shanghai Bailonggang Wastewater Treatment Plant. The water treatment volume of dewatered sludge water is 200L / d. The concentrations of orthophosphorus in concentrated dewatered sludge water and deep dewatered sludge water were 10.32mg / L and 0.08mg / L respectively, Ca 2+ The concentrations were 72.54mg / L and 3057.11mg / L respectively. The concentrated dewatered sludge water enters the filter unit A from the concentrated dewatered sludge water inlet 1, first passes through a 150-mesh micro-mesh, and then is filtered through a 500-mesh micro-mesh, the hydraulic retention time is 30 minutes, and the sludge discharge cycle is 2 hours. The concentrated dewatered sludge water filtered water enters the mixing reaction unit B fro...

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Abstract

The invention relates to a reactor for integrally treating deeply-dehydrated sludge water and concentrated and dehydrated sludge water. The reactor comprises a filtering unit, a mixed reaction unit and a sedimentation unit which are integrally arranged, wherein the filtering unit is provided with a concentrated and dehydrated sludge water inlet, a concentrated and dehydrated sludge water sludge outlet, a filtering assembly and a concentrated and dehydrated sludge water filtration water outlet; the mixed reaction unit is provided with a deeply-dehydrated sludge water inlet and a stirrer; and the sedimentation unit is provided with a sediment collecting hole and a purified sludge water outlet. Compared with the prior art, the reactor has the advantages that over 95% of suspended solids in the concentrated and dehydrated sludge water are removed by using an efficient filtering device, the turbidity of effluent is lower than 5NTU, and then, the effluent and the deeply-dehydrated sludge water are subjected to mixed reaction, the pollutant removal effect can be improved, the phosphorus content of the generated sediment is also remarkably increased, and the phosphorus in the sewage can be favorably recycled.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and relates to a sewage treatment device, in particular to a reactor for integrated treatment of deep dewatered sludge water and concentrated dewatered sludge water. Background technique [0002] The sewage biological treatment technology represented by the activated sludge method will discharge a large amount of excess sludge with a water content higher than 99% while purifying the sewage. It is a routine sewage treatment plant to achieve sludge volume reduction through the process of sludge concentration and dehydration. mud treatment process. The wastewater generated during the sludge thickening and dewatering process is called concentrated dewatered sludge water. With the further improvement of urbanization, the amount of sewage treatment in China has increased, and the amount of sludge has also increased significantly. However, land resources are becoming more and more tense, and sludge with...

Claims

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Application Information

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IPC IPC(8): C02F9/04
Inventor 周振胡大龙任伟超乔卫敏沈雪莲
Owner HUADIAN WATER TECH CO LTD