Novel combined process for treating chemical wastewater

A combined process and chemical wastewater technology, applied in water/sewage treatment, water treatment parameter control, special compound water treatment, etc., can solve problems such as increased device cost, high treatment cost, unfavorable microbial absolute anaerobic environment, etc. Clear and concise, reasonable process composition, process optimization effect

Inactive Publication Date: 2016-08-24
YANCHENG INST OF TECH
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  • Abstract
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Problems solved by technology

[0003] Judging from the existing patent materials, although the Chinese patent "Aerobic-anaerobic microbial repeated coupling treatment of sewage new technology (CN200310121766.7)" has a good effect, it will increase the cost of the device to a certain extent, and the aerobic-anaerobic microorganism Anaerobic repeated coupling is not conducive to the absolute anaerobic environment of microorganisms, and the efficiency of biological treatment is not high
The patent "a baffle reactor and its method for treating sewage (CN200610012070)" and the patent "integra

Method used

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  • Novel combined process for treating chemical wastewater
  • Novel combined process for treating chemical wastewater

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Embodiment 1

[0040] The comprehensive wastewater produced by a chemical company needs to be treated. The influent concentration before treatment is COD≤6000mg / L, pH 6.5~8.5, SS≤300mg / L, NH 3 -N≤100mg / L, TP≤2.5mg / L, characteristic pollutant concentration chlorobenzenes≤80mg / L. The effluent is required to meet the secondary standard of "Jiangsu Provincial Chemical Industry Discharge Standards for Major Water Pollutants" (DB32 / 939-2006). The effluent indicators require COD≤120mg / L, pH 6.5~8.5, SS≤150mg / L, NH 3 -N≤25mg / L, TP≤1.0mg / L, characteristic pollutant concentration chlorobenzenes≤1.0 mg / L.

[0041] Attached figure 1 The combined process in the combined use of improved Fenton fluidized bed (IFBR), upflow anaerobic sludge bed (UASB) and SBR reactor to treat chemical wastewater; including regulating tank, improved Fenton fluidized bed, The degassing neutralization tank, coagulation sedimentation tank, upflow anaerobic sludge bed, and SBR reactor are connected in sequence through water p...

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Abstract

The invention provides a novel combined process for treating chemical wastewater. The process adopts a regulating tank, an improved Fenton fluidized bed, a degassing neutralizing tank, a coagulative precipitation tank, an up-flow anaerobic sludge bed and an SBR (sequencing batch reactor), wherein the units are connected by a water pipe in sequence to treat the chemical wastewater. The novel combined process has the beneficial effects that the process is optimized and is clear and concise in route; the overall COD (chemical oxygen demand) removal rate is not less than 95%; the removal rate of characteristic organic pollutants is not less than 95%; and the process is convenient to operate and manage, is stable and is low in investment and operating costs.

Description

technical field [0001] The invention relates to a wastewater treatment method, in particular to a process method for chemical wastewater treatment, and belongs to the technical field of wastewater treatment. Background technique [0002] Chemical wastewater has the characteristics of large changes in water quantity and quality, poor biodegradability, difficult to degrade, and complex and diverse pollutants. Generally, appropriate pretreatment methods are adopted according to the actual wastewater quality, such as flocculation, micro-electrolysis, adsorption, and photocatalysis. Destroy refractory organic matter in wastewater, improve the biodegradability of wastewater, and then use biological methods, such as ABR, SBR, A / O process, etc., to treat chemical wastewater. At present, domestic and foreign research on the process of treating chemical wastewater also tends to adopt a combination of multiple methods. [0003] Judging from the existing patent materials, although the ...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F101/30
CPCC02F9/00C02F1/20C02F1/461C02F1/52C02F1/66C02F1/722C02F1/725C02F3/30C02F2101/30C02F2209/08C02F2305/026
Inventor 金建祥甘永航周佳玮朱雪晴
Owner YANCHENG INST OF TECH
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