Method for processing palm oil waste water and use thereof

A palm oil and waste water technology, applied in separation methods, chemical instruments and methods, flotation water/sewage treatment, etc., can solve the problems affecting anaerobic methane production process, additional cost of sludge, loss of economy, etc., to achieve Improve the treatment effect and gas production, high load, and avoid secondary pollution

Inactive Publication Date: 2008-11-12
中节能铁汉盖雅(北京)环境科技有限公司
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Problems solved by technology

[0012] When the organic load in the reactor is too high or the temperature is lowered, the insoluble organic matter in the wastewater is easy to accumulate in the granular sludge or in the sludge bed, resulting in the destabilization of the granular sludge or preventing the granulation of the sludge, which in turn affects the Anaerobic methanogenesis of the system, eventually leading to reactor collapse due to accumulation of organic acid concentrations in the system
In order to solve the influence of SS on the anaerobic reactor, the SS can be removed according to the usual treatment method before the wastewater enters the anaerobic reactor. This treatment method produces two problems: one is the suspended organic matter in the wastewater Solids have a large potential for gas production, which makes the treatment process lose better economics due to the large amount of SS removal; second, the disposal of sludge generated by UASB pretreatment requires additional costs

Method used

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  • Method for processing palm oil waste water and use thereof
  • Method for processing palm oil waste water and use thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A small-scale experiment was carried out in the laboratory using PASAO as the main process. The experimental water is wastewater from a palm oil regulating tank in Malaysia. The experimental water flow rate is 250ml / h, the water temperature is controlled at 30±1°C, the effective volume of the first-level UASB anaerobic reaction tank is 2000ml, and the hydraulic retention time is 8h. The effective volume of the anaerobic reaction tank is 10000ml, and the hydraulic retention time is 40h. The granular sludge in the UASB tank of a starch factory is inoculated in the two UASB tanks. The initial inoculated sludge amount is 25000mg MLSS / l, and the B120 engineering bacteria were strengthened. In the experiment, acclimatization was started by a small amount of water inflow, and the full-load operation state could be reached within 15 days, and then entered the continuous operation period. After about 10 days of continuous operation, it entered the formal stable operation period....

Embodiment 2

[0033] A palm oil factory in Malaysia discharges 1000m of sewage per day 3 / d, the existing sewage treatment process is the oxidation pond process, the treatment process covers a large area, and because there is no methane collection and recovery device, the methane and other greenhouse gases produced by the anaerobic pond are directly discharged into the atmosphere. In order to reduce greenhouse gas emissions and then sell corresponding carbon dioxide equivalents abroad, the factory plans to adopt new measures to collect and recycle methane gas.

[0034] In view of the existing problems, it was decided to use the PASAO combined process to treat the wastewater of the palm oil factory on the basis of the small test. The palm oil wastewater enters the regulating sedimentation tank at the back end by gravity, removes a certain amount of SS in the waste water by sedimentation, and then flows into the air flotation device at the rear end by gravity. The designed hydraulic retention...

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Abstract

The invention provides a method for treating palm oil wastewater and an application of the method. The method particularly adopts a process combining pretreatment, primary anaerobic treatment, precipitation, secondary anaerobic treatment and aerobic treatment. The details can be seen in the specification. The method and the application of the method have the advantages of high load, small occupied area, good treatment effect and high treatment efficiency. Most organic substances in the wastewater can be transformed into biogas which can be used as new energy after centralized collection; and the primary anaerobic treatment is controlled in a hydrolytic acidification section, thereby not only reducing the content of SS and grease in the wastewater, but also improving the treatment effect and the gas production of a secondary methanogenic aerobic reactor. The application of the method is as follows: the method not only has excellent treatment effect to the palm oil wastewater, but also can effectively treat similar fermentations (such as factory effluent of bioethanol, vintage, monosodium glutamate, starch and so on), food production, dairy products, livestock and poultry breeding and other industries; meanwhile, the process has excellent digestion effect to excess sludge for a sewage plant, in particular a municipal sewage plant.

Description

technical field [0001] The present invention relates to the field of waste water treatment, more specifically, relates to a method for treating wastewater with high COD, high suspended matter SS, and high oil and its application, the method not only treats high suspended matter SS with good biochemical , high-fat palm oil wastewater has a good treatment effect, and can effectively treat similar fermentation (such as bioethanol, wine, monosodium glutamate, starch and other production wastewater), food production, dairy products, livestock and poultry breeding and other industries wastewater, at the same time, This process also has a good digestion effect on the residual sludge of sewage plants, especially urban sewage treatment plants. Background technique [0002] Oil palm is a tropical oil tree species that blooms and bears fruit all year round and is harvested all year round. It belongs to the palm family tree. The oil content of its fruit is very rich, enjoying the title...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F1/40C02F1/52C02F1/24C02F3/30
Inventor 曾明宗承坤程佳倪晋仁
Owner 中节能铁汉盖雅(北京)环境科技有限公司
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