Kitchen waste leachate treatment and utilization device
A technology of kitchen waste and leachate, which is applied in the direction of contaminated groundwater/leachate treatment, water/sewage treatment, water treatment under temperature conditions, etc. It can solve the problems of low resource recovery rate, high operating cost, and long processing time. , to achieve the effect of strengthening the degradation efficiency, improving the activity of anaerobic bacteria, and reducing the loss
Pending Publication Date: 2021-05-07
ZHONGNONGXINKE SUZHOU ORGANIC RECYCLING RES INST CO LTD
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Problems solved by technology
At present, the main mode of my country's kitchen wastewater treatment project is "pretreatment + biochemical treatment + advanced treatment (membrane treatment)". Problems such as low utilization rate (the average resource utilization rate is less than 30%) have been difficult to overcome
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[0021] The present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments, and the purpose and effect of the present invention will become clearer. It should be understood that the specific embodiments described here are only used to explain the present invention and are not intended to limit the present invention.
[0022] Such as figure 1 and 2 As shown, the kitchen waste leachate treatment and utilization device of the present invention includes three parts: a high-temperature anaerobic digestion bin 1 , an anoxic reaction bin 10 , and a membrane separation bin 16 .
[0023] Wherein, a water inlet 4 is provided on the bottom side of the high-temperature anaerobic digestion chamber 1 , and the water inlet 4 communicates with a clean water return pipe 21 . The bottom of the high-temperature anaerobic digestion chamber 1 is provided with an isolation area, and the interior of the isolation area is filled with PVA-SA i...
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The invention discloses a kitchen waste leachate treatment and utilization device which comprises a high-temperature anaerobic digestion bin, an anoxic reaction bin and a membrane separation bin; a first stirring device and a folded plate are arranged in the high-temperature anaerobic digestion bin, and an isolation bin in which microbe balls for fixing anaerobic bacteria are placed is arranged at the lower part of the high-temperature anaerobic digestion bin; the high-temperature anaerobic digestion bin is communicated with the anoxic reaction bin, a hollow second stirring device is arranged in the anoxic reaction bin, and aeration holes are formed in stirring blades; through aeration holes, dissolved oxygen with a certain concentration is introduced into the anoxic reaction bin as required; an outlet of the anoxic reaction bin is communicated with a pressure pump; an outlet of the pressure pump is communicated with a nanofiltration membrane water outlet pipe which is positioned in the membrane separation bin and is made of a nanofiltration membrane; micromolecular organic substances in the wastewater are further concentrated in a nanofiltration membrane water outlet pipe, and clear water passes through the nanofiltration membrane to be gathered in the membrane separation bin and then is connected into the water inlet of the high-temperature anaerobic digestion bin through a clear water return pipe. The device is high in resource utilization rate, high in degradation efficiency and low in clean sludge output.
Description
technical field [0001] The invention relates to the field of sewage treatment, in particular to a treatment and utilization device for kitchen waste leachate. Background technique [0002] Kitchen waste leachate is waste water with high organic content, high COD concentration and rich trace elements due to extrusion and rainwater erosion during the collection, transportation, stacking and treatment of food waste. If it is not treated in time, it will cause serious harm to the human body. serious harm and serious pollution of the environment. In recent years, the output of food waste has been increasing. According to statistics, in 2019, the national output of food waste exceeded 100 million tons, and it generally has the characteristics of high moisture content (50-80%), especially fresh food waste and The moisture content of the sludge is more than 85%, and the dehydrated wastewater contains a large amount of organic matter, oil and trace elements. At present, the main mo...
Claims
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Login to View More IPC IPC(8): C02F9/14C02F101/30C02F103/06
CPCC02F1/40C02F1/442C02F3/2806C02F9/00C02F2101/30C02F2103/06C02F2301/10
Inventor 李季吴凌彦
Owner ZHONGNONGXINKE SUZHOU ORGANIC RECYCLING RES INST CO LTD