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Organic sewage treatment complexing agent

A compound agent and organic sewage technology, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of long sewage treatment process route, unstable water quality, difficulty in meeting the needs of sewage treatment, etc., and achieve good killing effect Effect

Inactive Publication Date: 2004-03-17
深圳市金朝阳环保科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these oxygen demands are difficult to reach the standard solely by biological treatment. Whether the AB method, ABR method, SBR method, LINDE method and UASB method are used alone, or mixed in series, it is difficult to meet the comprehensive sewage discharge standard (GB8978-1996 II level emission standards)
However, the chemicals used in physical and chemical treatment are conventional single species. These chemicals are difficult to adapt to the changing needs of sewage treatment. The sewage treatment process is long, costly, and the water quality cannot be stably met.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: Take 98% of polyaluminum chloride and 2% of ferric chloride by weight to make a composite agent.

[0016] Processing technology:

[0017] In 1 ton of cloth washing sewage (the COD concentration of the sewage in this example is 600-700mg / L, PH value = 8), add 20g of the above-mentioned organic sewage treatment compound agent, stir at high speed, mix evenly, flow into the sedimentation tank, and then pass through 60 minutes The aeration of the water flows into the secondary sedimentation tank, clarification through aeration, and then sand filtration, water purification activated carbon adsorption, decolorization, to achieve clear and transparent water. Aeration is to properly aerate the water after coagulation and precipitation to remove the soluble oxygen demand in the water. The overflow water, water quality analysis: CODCr concentration is 155mg / L, SS concentration is 30mg / L, PH=8.

[0018] In this embodiment, the water quality pH value adapts to the ra...

Embodiment 2

[0019] Embodiment 2: Take 94% of polyaluminum chloride and 6% of ferric chloride by weight to make a compound agent.

[0020] In 1 ton of cloth washing sewage (the COD concentration of the sewage in this example is 600-700mg / L, pH value = 8), add 20g of the above-mentioned organic sewage treatment compound agent, stir at high speed, mix evenly, flow into the sedimentation tank, and overflow out Water, water quality analysis: COD Cr The concentration is 155mg / L, the SS concentration is 30mg / L, Ph=8.

[0021] In this embodiment, the pH value of the water quality adapts to the range between 6.0 and 9.0, and the COD Cr 、BOD 5 It can only be used when it is not high, and its settling speed is slow.

Embodiment 3

[0022] Embodiment 3: Take 96% of polyaluminum chloride and 4% of ferric chloride by weight to make a compound agent.

[0023] In 1 ton of silk cloth sewage (this example sewage COD Cr Concentration is 400mg / L, pH = 7.2), add 20g of the above-mentioned organic sewage treatment composite agent, stir and mix evenly at high speed, flow into the sedimentation tank, and then flow into the secondary sedimentation tank after 60 minutes of aeration, and then carry out sanding Filter, water purification activated carbon adsorption, decolorization, to achieve clear and transparent water. Aeration is to add the water after coagulation sedimentation, plus proper aeration. It can further remove a small part of COD, BOD and pigments that still exist in the water, and its COD Cr 、BOD 5 The removal rate is greater than 80%.

[0024] In this embodiment, the medicament has a wide range of adaptability to the pH value of water quality, good decolorization, and general sedimentation. Water qu...

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PUM

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Abstract

The chemical compound for sewage treatment consists of aluminum chloride polymer 94-98 wt% and iron trichloride 2-6 wt%. Here, aluminum chloride polymer may be replaced with iron sulfate polymer; and polyacrylamide, copper dichloride, symclosene, etc. may be also added into the chemical compound for suiting varying sewage. The chemical compound may be recovered for reuse, and has low water treating cost. The treated water can reach GB / 14848-2001V standard.

Description

technical field [0001] The invention belongs to the technical field of organic sewage treatment, and in particular relates to a compound medicament for organic sewage treatment. Background technique [0002] At present, the main components of industrial wastewater such as food industry, textile industry, paper industry, leather industry, and medicine contain a large amount of chemical oxygen demand and biological oxygen demand. The oxygen demand in various industries is different, generally at 2000MgO 2 / L or more, high oxygen demand up to 200000MgO 2 / L, currently most enterprises use biological treatment and physical and chemical treatment. However, these oxygen demands are difficult to reach the standard solely by biological treatment. Whether the AB method, ABR method, SBR method, LINDE method and UASB method are used alone, or mixed in series, it is difficult to meet the comprehensive sewage discharge standard (GB8978-1996 II level emission standards). However, the ...

Claims

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Application Information

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IPC IPC(8): C02F1/52
Inventor 周永康
Owner 深圳市金朝阳环保科技有限公司
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