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Water treatment method for recycling bath sewage mainly using biological active carbon

A biological activated carbon, sewage recycling technology, applied in the field of water treatment, can solve problems such as water waste

Inactive Publication Date: 2009-03-11
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the past, the main ways of using bathing wastewater after treatment were as industrial water supply, farmland irrigation, watering green land roads, water fountains, or as miscellaneous water for cleaning cars and flushing toilets. It cannot be recycled as bathing water. waste of water

Method used

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  • Water treatment method for recycling bath sewage mainly using biological active carbon
  • Water treatment method for recycling bath sewage mainly using biological active carbon
  • Water treatment method for recycling bath sewage mainly using biological active carbon

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Experimental program
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specific Embodiment approach 1

[0007] The water treatment method of this embodiment includes A. coagulation, sedimentation, pretreatment method of filtration and materialization, B. entering immobilized biological activated carbon reactor, C. membrane filtration, D. UV disinfection four processes:

[0008] The pretreatment method described in process A is: (a). Coagulation: add polyaluminum chloride coagulant to the sewage, the dosage is 10-50mg / L, and the coagulation time does not exceed 30min; (b). Precipitation: then static precipitation for 10-30 minutes; (c). Filtration: then pass through the quartz sand filter column, the column height of the quartz sand filter column is 2-2.5m, the thickness of the filter layer is 1.2-1.5m, the supporting layer The thickness is 0.1~0.4m; the filtration rate is 7~20m / h.

[0009] The interior of the immobilized bioactivated carbon reactor described in process B is equipped with activated carbon. The overall height of the immobilized bioactivated carbon reactor is 200-3...

specific Embodiment approach 2

[0023] Specific embodiment 2: This embodiment is a comparative experiment for verifying the beneficial effects of the present invention.

[0024] The existing technology adopts the following method to treat bathing sewage: raw water→micro-flocculation filter→hollow fiber ultrafiltration membrane→disinfection→reuse, the water quality after treatment is no color, no smell, LAS 0.34mg / L, total number of bacteria 100cfu / ml; the number of coliform bacteria is greater than 3 / L water sample, and these indicators can meet the water quality standard for domestic miscellaneous water (CJ25.1-89). The treated water can be used for miscellaneous purposes such as landscaping, washing cars, and showering roads and toilets.

[0025] The water quality conditions of the bathing wastewater selected in this test are as follows: temperature 30-35°C; chromaticity 5-15 degrees; turbidity 35-120NTU; pH6.8-8.4; strong bath fragrance; permanganate index 10.0-75.0 mg / L; methylene blue active substance...

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Abstract

The invention discloses a water treatment method for recycling bath sewage using biological active carbon which comprises the steps of, (1) coagulating sedimentation and filtering, (2) entering immobilization biologically active charcoal reactor, (3) membrane filtering, (4) UV sterilization, wherein the immobilization biologically active charcoal reactor is provided with activated charcoal fixed by engineering bacterium, which is selected from anionic surface active agent degradation bacterium and / or degraded COD bacterium and / or nitrated bacterium.

Description

Technical field: [0001] The invention relates to a water treatment method capable of recycling bath sewage. Background technique: [0002] my country is a water-short country, especially in the northern region, where water resources are seriously insufficient, which has become one of the key factors restricting social and economic development. While water resources are insufficient, there is also a serious waste of water resources. The reuse rate of water in various industries is low. A large amount of precious water resources are discharged as waste water without being used or only after one-time use. It is imperative to save water and develop new water resources. The recycling of various types of sewage is one of the important development trends today. [0003] The bathing industry is an industry that develops rapidly along with the economic development of our country and the improvement of people's living standards, and various bathing places are spread all over large a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C12N1/00
Inventor 崔福义马放杨海燕
Owner HARBIN INST OF TECH