Rainwater and sewage integrated treatment process

A technology for treating rainwater and sewage, applied in the field of integrated rainwater and sewage treatment technology, can solve the problems of discontinuous effluent quality and low water quality of the rainwater reuse system, and achieve the effects of excellent treated water quality, low power consumption and convenient expansion.

Inactive Publication Date: 2018-12-21
SHANGHAI EMPEROR OF CLEANING HI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the discontinuity of the rainwater reuse system caused by the seasonality of rainwater and the shortcomings of the low water quality of the conventional treatment process, and to combine the rainwater with domestic sewage and miscellaneous drainage after pretreatment respectively and pass the rainwater into one The chemical treatment process can effectively reduce suspended solids, CODcr, BOD, nitrogen, and phosphorus in water. The treated water is better than the water quality requirements of urban miscellaneous water and meets higher water quality requirements for reuse. The treatment system can run continuously, with a high degree of automation and convenient operation and maintenance.

Method used

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  • Rainwater and sewage integrated treatment process

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Experimental program
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Effect test

Embodiment 1

[0042] A trial production test was carried out on the rainwater and domestic sewage generated by an office building (for the process see figure 1 ).

[0043](1) The rainwater is collected through the rainwater pipe, and after the initial abandonment of the automatic filter type rainwater disposal device, it is mixed with domestic sewage and then enters the A+MBR integrated treatment device.

[0044] (2) The domestic sewage is collected to the septic tank through the sewage drainage pipe network, and the clarified water from the septic tank is filtered by the mechanical grille, mixed with rainwater, and then enters the A+MBR integrated treatment device.

[0045] (3) Water quality after rain and sewage mixing: chromaticity is 100 times, BOD5 is 140mg / L, turbidity is 50NTU, NH3-N is 80mg / L.

[0046] (4) Rainwater sewage enters the A+MBR integrated treatment device, first stays in the A-section reactor for 1 hour, and stays in the MBR section reactor for 3 hours, and then adds th...

Embodiment 2

[0050] A trial production test was carried out on the rainwater and domestic sewage generated by an urban complex (for the process see figure 1 ).

[0051] (1) The rainwater is collected through the rainwater pipe, and after the initial abandonment of the automatic filter type rainwater disposal device, it is mixed with domestic sewage and then enters the A+MBR integrated treatment device.

[0052] (2) The domestic sewage is collected to the septic tank through the sewage drainage pipe network, and the clarified water from the septic tank is filtered by the mechanical grille, mixed with rainwater, and then enters the A+MBR integrated treatment device.

[0053] (3) Water quality after rain and sewage mixing: chromaticity is 120 times, BOD5 is 200mg / L, turbidity is 80NTU, NH3-N is 120mg / L.

[0054] (4) Rainwater sewage enters the A+MBR integrated treatment device, first stays in the A-section reactor for 2 hours, and stays in the MBR section reactor for 4 hours, and then adds t...

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Abstract

The invention relates to a rainwater and sewage integrated treatment process. The process comprises the following steps: enabling rainwater conflux to be subjected to initial rainwater discarding, andthen mixing the obtained rainwater with domestic sewage and miscellaneous drainage by means of a pipeline mixer; then, enabling the obtained mixture to enter an A+MBR integrated treatment device, mixing effluent, obtained after treatment of the A+MBR integrated treatment device, with a disinfectant, and carrying out disinfection treatment. Compared with the prior art, the rainwater and sewage integrated treatment process provided by the invention has a high removal rate of chroma, biochemical oxygen demand (BOD), ammonia nitrogen and turbidity in the rainwater and the domestic sewage, is goodin effluent quality, simple in process flow and low in construction and operation costs, can realize full automation, is low in management and maintenance costs, and can bring considerable environmental benefits.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to an integrated rain and sewage treatment process. Background technique [0002] Water is one of the most important material conditions for the survival of human society. As a country with a shortage of water resources, my country has a per capita water resource of 273 cubic meters, which is only 1 / 4 of the world's per capita. An important factor restricting the sustainable development of cities in our country. Among them, rainwater is one of the water sources of urban non-drinking water. Due to the seasonality of rainfall, if the rainwater is only treated, the operation of the treatment system will be discontinuous, resulting in low efficiency of the treatment system. If rainwater, miscellaneous drainage, and domestic sewage can be effectively combined and treated together, regenerated water that meets the quality standards of domestic miscellaneous water can b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCC02F1/001C02F1/50C02F3/30C02F9/00C02F2103/001C02F2301/08C02F2303/04
Inventor 王炜
Owner SHANGHAI EMPEROR OF CLEANING HI TECH
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