Fecal sewage decolorizing method and device

A fecal sewage, oxidation decolorization technology, applied in the direction of water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problem of increased chroma, accumulation, and inability to be degraded or removed in time, etc. question

Inactive Publication Date: 2008-06-11
深圳龙澄高科技环保股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the treatment and reuse system of fecal sewage, since the treated object is almost entirely fecal sewage, the content of urobilin and urobilin is relatively high, coupled with th

Method used

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  • Fecal sewage decolorizing method and device

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Effect test

Embodiment 1

[0038] The present invention will be further described in detail by taking a bio-environmental protection toilet as an example in conjunction with the accompanying drawings. The bio-environmentally friendly toilet operates in a weakly alkaline environment, in which urobilin and fecal bilein cannot be degraded, and the circulating water appears yellow-brown, which affects the senses. The decolorization device is now installed in the purified water pipe after the membrane bioreactor in the bio-environmental protection toilet for decolorization. Take a graphite electrode of 500mm×120mm×10mm, two 18 / 8 stainless steel plates of 500mm×120mm×1mm, and install them in the purified water pipe after the membrane bioreactor in the bio-environmental protection toilet. The graphite plate is placed in the middle of the pipe, and the two The 18 / 8 stainless steel plates are respectively placed on both sides of the graphite plate, relatively parallel to each other, so that the distance between ...

Embodiment 2

[0040] Make the material replenished in the automatic salt supply device be seawater, control the final concentration of NaCl to be 0.9%, and the anode is coated with TiO 2 -RuO 2 Coated titanium plate is made, and other structure is identical with embodiment 1, carries out electrolytic decolorization treatment. After the decolorization unit has been in operation for 32 days, the measured pH value of the circulating water has risen to 9.1, and a sufficient number of microorganisms that can be used to degrade urobilin and fecal bilein have accumulated in the circulating water. At this time, stop the operation of the decolorization unit to achieve bio-environmental protection Automatic decolorization of toilet circulating water. After using the decolorization device, the circulating water of the bio-environmental protection toilet is colorless, clear and transparent, which can fully meet the toilet flushing water standard stipulated in the "Urban Sewage Recycling and Utilizatio...

Embodiment 3

[0042] Taking the sewage treatment system of the manure treatment plant as an example to carry out the application of the decolorization device. The sewage flow rate of the manure treatment plant is 250m 3 / d, in order to fully carry out the electrolytic decolorization treatment, a two-stage decolorization device is installed in the sewage pipeline. The primary decolorization device consists of a 600mm×200mm×20mm graphite electrode and a 600mm×200mm×2mm cadmium copper alloy plate. The secondary decolorization device is set up the same as the primary decolorization device. The distance between the two decolorization devices is 1000mm. Use an automatic salt supply device to monitor and control the salt in the sewage, and control its final concentration to 1.5%, wherein the supplementary material is industrial salt water. Use a 10A wire to connect the graphite plate and the cadmium copper alloy plate to the positive and negative output terminals of a DC power supply with a powe...

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Abstract

The invention provides a decolorizing method for fecal sewage and equipment. The equipment is composed of an automatic salt-feed device, negative and positive electrodes and direct current supply. The equipment is installed on an outlet conduit of purified fecal sewage, the direct current supply is connected with a power control device of up-feed pumps via lead wires, and the synchronous operation of decolorizing and water-feeding procedures is realized. The invention realizes the cyclic process of electrolyzation-oxidation decolorizing-reduction by employing the principle of electrolysis of common salt liquor, and the clearance rate of the colourity of the fecal sewage reaches above 99%. The decolorizing equipment is compact in structure, low in energy consumption and excellent in performance, and can be compatible with a sewage treatment and a reclaimed water reusing system. The decolorizing equipment not only can be applied to the circulating water treatment of biological environmental protection toilets, but also can be applied to district reclaimed water reusing system and water reusing system of sewage treatment plants, further can be applied to decolorizing of circulating water of large air conditioners and sterilization and algae killing for reducing the energy consumption of the air conditioners, and the decolorizing equipment has a wide application prospect in the fields of sewage treatment and reclaimed water reusing.

Description

technical field [0001] The invention relates to a method and device for decolorizing sewage, in particular to a method and device for removing urobilin and urobilin in fecal sewage, belonging to the technical field of urban organic sewage treatment. Background technique [0002] When countries around the world solve the water shortage problem, urban sewage is selected as a reliable and reusable second water source. The reuse of urban sewage is the process of reusing the water used in the life and production of urban residents after treatment. For many years, the reuse of urban sewage has been the focus of research in the field of sewage treatment at home and abroad. The development and reuse technology of reclaimed water has recently developed rapidly abroad, especially in the United States, Israel, Japan and other countries. my country is a country with a relatively serious water shortage problem. According to statistics, among the 669 cities in the country, 400 cities ha...

Claims

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Application Information

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IPC IPC(8): C02F1/461
Inventor 张涉马辉文黄卓孟丽娜汪春霞李欣陆晓春杨先明季伟汪晓惠许林华
Owner 深圳龙澄高科技环保股份有限公司
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