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Highly effective waste water treatment technique

A wastewater treatment and process technology, applied in the direction of water/sewage multi-stage treatment, water/sludge/sewage treatment, sustainable biological treatment, etc., can solve the problems of biochemical sludge, secondary pollution, etc., and achieve biochemical treatment , Improve adaptability, set flexible and convenient effects

Inactive Publication Date: 2005-11-02
姜峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While improving biodegradability and decolorization, this method also produces a large amount of physical and chemical sludge, which brings secondary pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1: Applied to the treatment of polyester cloth printing and dyeing wastewater. Include the following process links in turn: regulating pool (HRT10h); an aerobic pool (4.8kgBOD / m 3 d); a sedimentation tank (1.2m 3 / m 2 · h); two facultative oxygen tanks (0.6kgBOD / m 3 d); two aerobic pools (0.4kgBOD / m 3 ·d); secondary settling tank (0.8m 3 / m 2 h); dosing sedimentation tank (0.6m 3 / m 2 h). 80% of the suspended plane filler in the biochemical pool. Add 0.06kgFeCl to an aerobic tank 3 / ton of waste water. Facultative pools are equipped with bottom mixers. Activated sludge from a settling tank is returned to an aerobic tank. The activated sludge in the secondary settling tank is returned to the secondary aerobic tank. An aerobic pool SV30 controls 50%. Wastewater raw water pH8-9, chroma 600-1200 times, COD800-950mg / L, BOD165-360mg / L. The pH of the effluent from the wastewater treatment system is 6.5-7.5, the chroma is 32-64 times, and the COD is 40-80...

Embodiment 2

[0033] Embodiment 2: be applied to reactive dyestuff production waste water treatment, comprise following technological link successively: regulation pond (HRT16h); One part-time oxygen pond (2.6kgBOD / m 3 d); an aerobic pool (2.8kgBOD / m 3 d); a sedimentation tank (1.4m 3 / m 2 · h); two facultative oxygen tanks (0.8kgBOD / m 3 d); two aerobic pools (0.6kgBOD / m 3 ·d); secondary settling tank (0.8m 3 / m 2 ·h); three facultative oxygen tanks (0.2kgBOD / m 3 d); two aerobic pools (0.4kgBOD / m 3 ·d); triple sedimentation tank (0.6m 3 / m 2 h). The effective height of the biochemical pool is 5 meters, and the hanging elastic filler is 4 meters. The facultative pool is equipped with a submersible mixer and an aeration device to control DO0.1-0.4mg / L. The activated sludge in a settling tank is returned to a facultative tank. The activated sludge in the secondary settling tank is returned to the secondary aerobic tank. The activated sludge in the three settling tanks is returned ...

Embodiment 3

[0034] Embodiment 3: applied to the treatment of pesticide production wastewater, including the following process links in turn: regulating tank (HRT8h), adding 0.1kgFeSO 4 / ton of wastewater, set up aeration and stirring, add liquid caustic soda to adjust pH7-8; a facultative oxygen pool (2.2kgBOD / m 3 d), the effective height is 5 meters, the soft packing is suspended 3.5 meters, and the submersible mixer and aeration device are installed; an aerobic tank (4kgBOD / m 3 d), the effective height is 5 meters, no filler, and the SV30 control is greater than 35%; a settling tank (1.2m 3 / m 2 h), the activated sludge returns to the first facultative tank; the second facultative tank (0.6kgBOD / m 3 d), the effective height is 5 meters, the soft packing is suspended 3.5 meters, and the submersible mixer is set; the second aerobic pool (0.6kgBOD / m 3 d), the effective height is 5 meters, the hanging soft packing is 4.5 meters, no secondary settling tank; three facultative oxygen tanks...

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PUM

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Abstract

The high efficiency waste water treating process has raised biochemical treatment and decolorizing and reduced sludge producing amount, and can provides microbe in waste water with nutrients. The treating apparatus includes waste water regulating pond, biochemical treating pond and physical and chemical treating pond. The biochemical treatment includes two or three sections and each section includes facultative treatment, aerobic treatment and active sludge treatment separately in corresponding ponds. The waste water regulating pond and the biochemical treating pond have small amount of iron salt thrown, the biochemical treating pond may have microbial stuffing, and the facultative pond is provided with stirrer and oxygen supplier. The first section of biochemical treatment has high volume load and great microbe amount, and the second and third sections have low volume load. The present invention may be used in treating various kinds of industrial waste water.

Description

Technical field: [0001] The invention relates to the field of environmental protection, and further refers to a high-efficiency wastewater treatment process. Background technique: [0002] The design goal of the wastewater treatment process is to take into account the treatment effect, treatment efficiency and operation treatment cost. The wastewater biochemical treatment process has the advantages of simple management, low operating costs, and no secondary pollution, and is widely used in sewage treatment occasions. However, many industrial wastewaters cannot be treated biochemically due to their low BOD / COD values. There are also many wastewaters with high chroma, which cannot be decolorized by biochemical treatment. In order to improve biodegradability and decolorization, in the wastewater treatment of those printing and dyeing, dyeing, chemical, pharmaceutical, papermaking, etc., environmental protection engineers often use dosing pretreatment methods, and set dosing s...

Claims

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Application Information

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IPC IPC(8): C02F9/14
CPCY02W10/10
Inventor 詹濛奇姜峰詹伯君
Owner 姜峰
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