WO2011079450A1 - Integrated treatment method of biochemical sludge in municipal wastewater treatment plant and municipal waste grease - Google Patents

Integrated treatment method of biochemical sludge in municipal wastewater treatment plant and municipal waste grease Download PDF

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Publication number
WO2011079450A1
WO2011079450A1 PCT/CN2009/076300 CN2009076300W WO2011079450A1 WO 2011079450 A1 WO2011079450 A1 WO 2011079450A1 CN 2009076300 W CN2009076300 W CN 2009076300W WO 2011079450 A1 WO2011079450 A1 WO 2011079450A1
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Prior art keywords
biochemical sludge
sludge
distillation
treatment
biochemical
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PCT/CN2009/076300
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French (fr)
Chinese (zh)
Inventor
陈丰
郭志勇
丘国强
陈燕萍
卢欢亮
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茵绿环境科技发展（香港）有限公司
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Priority to PCT/CN2009/076300 priority Critical patent/WO2011079450A1/en
Publication of WO2011079450A1 publication Critical patent/WO2011079450A1/en

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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G3/00—Production of liquid hydrocarbon mixtures from oxygen-containing organic materials, e.g. fatty oils, fatty acids
    • C10G3/40—Thermal non-catalytic treatment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/10—Treatment of sludge; Devices therefor by pyrolysis
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
    • C10G1/02—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal by distillation
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00—Liquid carbonaceous fuels
    • C10L1/02—Liquid carbonaceous fuels essentially based on components consisting of carbon, hydrogen, and oxygen only
    • C10L1/026—Liquid carbonaceous fuels essentially based on components consisting of carbon, hydrogen, and oxygen only for compression ignition
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P30/00—Technologies relating to oil refining and petrochemical industry
    • Y02P30/20—Technologies relating to oil refining and petrochemical industry using bio-feedstock
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/40—Valorisation of by-products of wastewater, sewage or sludge processing

Definitions

  • the invention relates to an environmental protection technology for pollutant treatment and recycling, in particular to a comprehensive treatment technology for biochemical sludge and urban living waste oil in a municipal sewage treatment plant, and belongs to the field of environmental protection and energy conservation technology.
  • the international sludge treatment methods include ocean dumping, sanitary landfill, incineration, sludge heat, and composting.
  • sludge farming accounts for about 45%
  • landfill accounts for about 45%. 31%, other treatments are about 10%
  • composting treatment is about 14%.
  • the so-called ocean dumping that is, direct dumping of biochemical sludge into the ocean, using the self-purification capacity of the ocean to treat biochemical sludge, but currently the countries in the world are basically not allowed to dump sludge into the ocean; sanitary landfill, that is, the biodegradable sludge moisture content After falling below 60%, it will directly enter the landfill for landfill disposal.
  • the sanitary landfill is simple and low-cost, but it takes up a large amount of land, and the seepage liquid is difficult to handle, affecting the groundwater system.
  • Incineration it uses the incinerator to dehydrate it.
  • the sludge is heated and dried, and the organic matter in the sludge is oxidized by high temperature to make the sludge a small amount of ash.
  • the technology is completely treated, and the capacity reduction rate is up to 95%, but the cost is high.
  • the hot-sludge of sludge refers to the use of heat to destroy the gelled structure in the sludge, and the sludge is disinfected and sterilized, which can significantly reduce the volume of the sludge.
  • the product is stable, odorless and free of pathogenic organisms.
  • the sludge product has many uses, but the equipment investment is high.
  • the sludge composting technology the sludge is fermented by the aerobic microbial bacteria in the sludge, which has the advantages of utilizing bioenergy, saving energy, and improving fertilizer efficiency.
  • the disadvantages are large floor space, long cycle, and odor.
  • biodiesel Due to the shortage of petroleum energy, biodiesel is non-toxic, degradable, with excellent environmental protection functions and high calorific value.
  • Developed countries such as Japan, Europe and the United States have successively carried out research on the use of biodiesel.
  • Japan has experimented with frying oil as a raw material to produce biodiesel.
  • European and American countries use rapeseed oil and soybean oil as raw materials to produce biodiesel.
  • domestic research on biodiesel using vegetable oil and methanol as raw materials has also been conducted.
  • the water-repellent oil not only contains a variety of vegetable oils, but also contains animal fats. The ingredients are more complex than simple vegetable oils and are a kind of waste oil with animal and vegetable oils.
  • the invention provides a comprehensive treatment technology of biochemical sludge and waste oil, which not only reduces the treatment cost of biochemical sludge, but also recycles biochemical sludge, and can simultaneously treat waste animal and vegetable oil, especially processing catering water and oil.
  • a clean renewable energy source can also prevent the water from flowing back into the table and affecting the health of the consumer, thereby achieving environmental protection, energy conservation, and waste recycling.
  • a comprehensive treatment method for biochemical sludge and urban living waste oil in a municipal sewage treatment plant comprising a biochemical sludge distillation treatment and a waste oil treatment, characterized in that the steps of the comprehensive treatment method are:
  • the waste grease is subjected to pressure filtration to remove impurities and dehydrated, and then the diesel fuel is mixed in a certain proportion to form a mixed fuel oil.
  • the volume of the waste oil in the prepared mixed fuel oil is 30-80%;
  • the biochemical sludge After the biochemical sludge is dehydrated, it is transported to the sludge distillation unit for dehydration and distillation treatment.
  • the combustible gas of the waste animal and vegetable oil and the biochemical sludge after-products are used as the distillation fuel, and the biochemical sludge is fully distilled.
  • the process is carried out in a sealed equipment, in the sealed, anaerobic, non-combustible and high temperature conditions, the biochemical sludge is converted into water vapor, and some biochemical sludge is converted into flammable gas. Conversion of biochemical sludge into biochar;
  • the mixed fuel produced in the step A and the combustible gas obtained in the step B are sent to the biochemical sludge distillation treatment system as a fuel for the distillation.
  • the distillation temperature is controlled at 300-850 °C.
  • the mixed fuel of the present invention can also be prepared by mixing waste oil (for example, hydrophobic oil) by pickling, caustic washing, water washing and drying, and mixing it with diesel oil.
  • waste oil for example, hydrophobic oil
  • the volume of waste oil in the mixed fuel accounts for 30-80. %.
  • the invention has the beneficial effects that the waste oil and fat are treated at the same time as the biochemical sludge distillation treatment, and the product for treating the waste oil and fat is used as the treatment of the biochemical sludge distillation fuel, thereby greatly reducing the cost of the biochemical sludge distillation treatment.
  • the main product, biochar can be used as a raw material for the production of water treatment flocculants or as a raw material for the production of barbecue charcoal and columnar carbon to realize the recycling of biochemical sludge.
  • the waste grease is subjected to pressure filtration, dewatering and dehydration, and then mixed with diesel oil in a mixing tank according to a certain ratio to prepare a mixed fuel oil, and placed in a mixed fuel storage tank, and the volume of the waste oil in the prepared mixed fuel oil. It is 30-80% of the volume of the mixed fuel.
  • the prepared mixed fuel is supplied to the biochemical sludge distillation machine as a fuel, that is, in the combustion system of the distillation, the mixed fuel is atomized and mixed with the air and completely burned, and the high-temperature hot gas generated after the combustion is sent into the distillation.
  • the unit acts as a heat source for the biochemical sludge.
  • the biochemical sludge is transported to the sludge distillation unit for dehydration and distillation.
  • the whole process of the sludge treatment is carried out in a sealed, anaerobic, non-combustible, 300-85 CTC temperature state.
  • Biochemical sludge in the distillation process part of the carbon After being cooled and cooled, it becomes biochar; the water is converted into water vapor and then cooled to condensed water, and after being adsorbed by biochar, it becomes industrial distilled water; part of the biochemical sludge is converted into a combustible gas.
  • the flammable gas such as C, H 2 or CO produced by the distillation process is condensed and dehydrated, and the flammable gas is collected in the gas storage tank and sent back to the combustion system to realize closed loop use of the flammable gas, that is, The flammable gas of some of the distillation by-products is sent back to the distillation machine for the distillation fuel.

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  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Wood Science & Technology (AREA)
  • Treatment Of Sludge (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)

Abstract

An integrated treatment method of biochemical sludge in municipal wastewater treatment plant and municipal waste grease includes dry distillation of biochemical sludge and treatment of waste grease. This method includes the following steps: mixing the waste grease from which the impurity has been removed by pressure filtration and diesel oil according to certain ratio to obtain mixed fuel which can be used as the fuel of dry distillation, dry distilling the biochemical sludge under the airproof condition of no oxygen, no combustion and high temperature. The water in the biochemical sludge is transformed to vapor, part of biochemical sludge is transformed to combustible gas and part of biochemical sludge is transformed to biological carbon. This method reduces the cost of dry distillation of biochemical sludge and can make use of waste grease simultaneously.

Description

城市污水处理厂生化污泥和城市生活废油脂综合处理方法 技术领域  Comprehensive treatment method for biochemical sludge and urban living waste oil in urban sewage treatment plant
本发明涉及一种污染物处理和再生利用的环保技术，特别是一种城市 污水处理厂生化污泥和城市生活废油脂的综合处理技术，属环保节能技术 领域。 冃 不  The invention relates to an environmental protection technology for pollutant treatment and recycling, in particular to a comprehensive treatment technology for biochemical sludge and urban living waste oil in a municipal sewage treatment plant, and belongs to the field of environmental protection and energy conservation technology.冃 No
目前国际上污泥处理采取的方式有海洋倾倒、卫生填埋、焚烧、污泥 热千化、 堆肥等几种处理技术， 我国污泥处置中， 污泥农用约占 45 %， 陆地填埋占 31 %， 其它处理约 10%， 堆肥处理约 14 %。 所谓海洋倾倒， 即直接将生化污泥倾倒至海洋中，利用海洋的自净能力处理生化污泥，但 目前世界上各国基本都不允许往海洋倾倒污泥；卫生填埋， 即将生化污泥 含水率降至 60%以下后直接进入垃圾填埋场进行填埋处理， 卫生填埋操 作简单、费用低，但占用土地量大，渗漏液难处理，影响地下水系；焚烧， 它利用焚烧炉将脱水污泥加温千燥，再用高温氧化污泥中的有机物，使污 泥成为少量灰烬， 该技术处理彻底， 其减容率可达 95 %， 但费用高。 污 泥热千化， 指利用热来破坏污泥中的胶凝结构， 并对污泥进行消毒灭菌， 能使污泥显著减容， 产品稳定， 无臭且无病原生物， 千化处理后的污泥产 品用途多， 但设备投资高， 至于污泥堆肥技术， 是利用污泥中的好氧微生 物菌对污泥进行发酵的处理过程， 其优点是利用生物能， 节约能源， 肥效 好， 但缺点是占地面积大、 周期长、 产生臭气等。  At present, the international sludge treatment methods include ocean dumping, sanitary landfill, incineration, sludge heat, and composting. In China's sludge disposal, sludge farming accounts for about 45%, and landfill accounts for about 45%. 31%, other treatments are about 10%, and composting treatment is about 14%. The so-called ocean dumping, that is, direct dumping of biochemical sludge into the ocean, using the self-purification capacity of the ocean to treat biochemical sludge, but currently the countries in the world are basically not allowed to dump sludge into the ocean; sanitary landfill, that is, the biodegradable sludge moisture content After falling below 60%, it will directly enter the landfill for landfill disposal. The sanitary landfill is simple and low-cost, but it takes up a large amount of land, and the seepage liquid is difficult to handle, affecting the groundwater system. Incineration, it uses the incinerator to dehydrate it. The sludge is heated and dried, and the organic matter in the sludge is oxidized by high temperature to make the sludge a small amount of ash. The technology is completely treated, and the capacity reduction rate is up to 95%, but the cost is high. The hot-sludge of sludge refers to the use of heat to destroy the gelled structure in the sludge, and the sludge is disinfected and sterilized, which can significantly reduce the volume of the sludge. The product is stable, odorless and free of pathogenic organisms. The sludge product has many uses, but the equipment investment is high. As for the sludge composting technology, the sludge is fermented by the aerobic microbial bacteria in the sludge, which has the advantages of utilizing bioenergy, saving energy, and improving fertilizer efficiency. However, the disadvantages are large floor space, long cycle, and odor.
由于石油能源紧缺， 加上生物柴油无毒性、可降解， 具有优良的环保 功能和较高的热值， 日本、欧美等发达国家先后都开展利用生物柴油的研 究， 日本曾实验用煎炸油作为生产原料生产生物柴油，欧美国家利用菜籽 油和豆油为原料生产生物柴油，国内也有利用植物油和甲醇为原料进行合 成生物柴油的研究。潲水油不仅含有多种植物油， 还含有动物脂肪， 成份 比单纯植物油复杂，为一种舍有动植物油脂的废油脂。利用餐饮潲水油这 类废油脂与柴油混合来制备热值较高混合燃油，并将潲水油处理技术与生 化污泥处理技术结合在一起， 是目前环保领域的一个新课题。 发明内容 Due to the shortage of petroleum energy, biodiesel is non-toxic, degradable, with excellent environmental protection functions and high calorific value. Developed countries such as Japan, Europe and the United States have successively carried out research on the use of biodiesel. In addition, Japan has experimented with frying oil as a raw material to produce biodiesel. European and American countries use rapeseed oil and soybean oil as raw materials to produce biodiesel. Domestic research on biodiesel using vegetable oil and methanol as raw materials has also been conducted. The water-repellent oil not only contains a variety of vegetable oils, but also contains animal fats. The ingredients are more complex than simple vegetable oils and are a kind of waste oil with animal and vegetable oils. It is a new topic in the field of environmental protection to use a mixture of waste oils such as catering water and diesel oil to prepare high-mixed fuel with high calorific value and combine the technology of hydrophobic oil treatment with biochemical sludge treatment. Summary of the invention
本发明提供一种生化污泥和废油脂综合处理技术，该技术不仅降低生 化污泥的处理成本，而且将生化污泥资源化，并能够同时处理废动植物油 脂，特别是把餐饮潲水油加工为生物燃料油，获得一种清洁的可再生能源， 还可防止潲水油重新流入餐桌而影响食用者的健康，从而达到环保、节能、 废物再生利用的目的。  The invention provides a comprehensive treatment technology of biochemical sludge and waste oil, which not only reduces the treatment cost of biochemical sludge, but also recycles biochemical sludge, and can simultaneously treat waste animal and vegetable oil, especially processing catering water and oil. For biofuel oil, a clean renewable energy source can also prevent the water from flowing back into the table and affecting the health of the consumer, thereby achieving environmental protection, energy conservation, and waste recycling.
本发明解决其技术问题所采取的技术方案：  The technical solution adopted by the present invention to solve its technical problems:
一种城市污水处理厂生化污泥和城市生活废油脂综合处理方法，包括 生化污泥千馏处理和废油脂处理， 其特征是该综合处理方法的步骤为： A comprehensive treatment method for biochemical sludge and urban living waste oil in a municipal sewage treatment plant, comprising a biochemical sludge distillation treatment and a waste oil treatment, characterized in that the steps of the comprehensive treatment method are:
A.废油脂处理 A. Waste grease treatment
将废油脂经过压滤除杂脱水后按一定比例混合柴油形成混合燃油，在 制成的混合燃油中废油脂的体积为 30-80 % ;  The waste grease is subjected to pressure filtration to remove impurities and dehydrated, and then the diesel fuel is mixed in a certain proportion to form a mixed fuel oil. The volume of the waste oil in the prepared mixed fuel oil is 30-80%;
B.生化污泥千馏处理  B. Biochemical sludge distillation treatment
生化污泥脱水后，输送到污泥千馏机组内进行脱水和千馏处理，千馏 中以废动植物油及生化污泥千馏后副产品可燃性气体作为千馏燃料，生化 污泥千馏全过程均在密封的设备内进行， 在密封、无氧、非燃和高温状态 下千馏， 将生化污泥转化为水蒸汽， 部分生化污泥转化为可燃性气体， 部 分生化污泥转化成生物炭； After the biochemical sludge is dehydrated, it is transported to the sludge distillation unit for dehydration and distillation treatment. In the distillation, the combustible gas of the waste animal and vegetable oil and the biochemical sludge after-products are used as the distillation fuel, and the biochemical sludge is fully distilled. The process is carried out in a sealed equipment, in the sealed, anaerobic, non-combustible and high temperature conditions, the biochemical sludge is converted into water vapor, and some biochemical sludge is converted into flammable gas. Conversion of biochemical sludge into biochar;
C.将由步骤 A制得的混合燃油及由步骤 B中制得的可燃性气体输送到 生化污泥千馏处理燃烧系统中作为进行千馏的燃料。  C. The mixed fuel produced in the step A and the combustible gas obtained in the step B are sent to the biochemical sludge distillation treatment system as a fuel for the distillation.
在生化污泥千馏过程中， 千馏控制温度为 300-850°C。  In the biochemical sludge distillation process, the distillation temperature is controlled at 300-850 °C.
本发明的混合燃油， 也可以通过将废油脂（例如潲水油） 经过酸洗、 碱洗、水洗和千燥后， 将其与柴油混合制成， 在混合燃油中废油脂的体积 占 30-80 %。  The mixed fuel of the present invention can also be prepared by mixing waste oil (for example, hydrophobic oil) by pickling, caustic washing, water washing and drying, and mixing it with diesel oil. The volume of waste oil in the mixed fuel accounts for 30-80. %.
本发明的有益效果是：在生化污泥千馏处理的同时处理废油脂，并且 以处理废油脂的产物作为处理生化污泥千馏燃料，极大地降低了生化污泥 千馏处理的成本，其主要产品生物炭又可作为生产水处理絮凝剂的原料或 制作烧烤炭、 柱状炭的原料， 实现生化污泥的资源化。 附图说明  The invention has the beneficial effects that the waste oil and fat are treated at the same time as the biochemical sludge distillation treatment, and the product for treating the waste oil and fat is used as the treatment of the biochemical sludge distillation fuel, thereby greatly reducing the cost of the biochemical sludge distillation treatment. The main product, biochar, can be used as a raw material for the production of water treatment flocculants or as a raw material for the production of barbecue charcoal and columnar carbon to realize the recycling of biochemical sludge. DRAWINGS
图 1为本发明综合处理技术的工艺流程图。 具体实施方式  1 is a process flow diagram of an integrated processing technique of the present invention. detailed description
对照附图， 详细说明之。  It will be described in detail with reference to the accompanying drawings.
在图 1中，将废油脂经过压滤除杂脱水后按一定比例在混合罐中与柴 油混合制成混合燃油，并置于混合燃油储罐中，在制成的混合燃油中废油 脂的体积为混合燃油体积的 30-80 %。  In Fig. 1, the waste grease is subjected to pressure filtration, dewatering and dehydration, and then mixed with diesel oil in a mixing tank according to a certain ratio to prepare a mixed fuel oil, and placed in a mixed fuel storage tank, and the volume of the waste oil in the prepared mixed fuel oil. It is 30-80% of the volume of the mixed fuel.
将制得的混合燃油提供给生化污泥千馏机作燃料，即在千馏的燃烧系 统中，混合燃油经雾化后与空气混合并完全燃烧，燃烧后所产生高温热气 被输送入千馏机组作为生化污泥千馏热源。生化污泥经脱水后，输送到污 泥千馏机组内进行脱水和千馏处理，千馏处理污泥全过程是在密封、无氧、 非燃、 300-85CTC的温度状态下进行。 生化污泥在千馏过程中， 部分经炭 化、冷却后成为生物炭； 水分转化为水蒸汽再经冷却成冷凝水， 经用生物 炭吸附后成为工业用蒸馏水； 部分生化污泥转化为可燃性气体。千馏过程 产生的 C 、 H2、 CO等可燃性气体， 经冷凝除水后， 将可燃性气体收集 于储气罐中， 再送回到燃烧系统， 实现可燃性气体的闭路循环使用， 即这 部分千馏副产品可燃性气体再输送回千馏机作千馏燃料。 The prepared mixed fuel is supplied to the biochemical sludge distillation machine as a fuel, that is, in the combustion system of the distillation, the mixed fuel is atomized and mixed with the air and completely burned, and the high-temperature hot gas generated after the combustion is sent into the distillation. The unit acts as a heat source for the biochemical sludge. After dehydration, the biochemical sludge is transported to the sludge distillation unit for dehydration and distillation. The whole process of the sludge treatment is carried out in a sealed, anaerobic, non-combustible, 300-85 CTC temperature state. Biochemical sludge in the distillation process, part of the carbon After being cooled and cooled, it becomes biochar; the water is converted into water vapor and then cooled to condensed water, and after being adsorbed by biochar, it becomes industrial distilled water; part of the biochemical sludge is converted into a combustible gas. The flammable gas such as C, H 2 or CO produced by the distillation process is condensed and dehydrated, and the flammable gas is collected in the gas storage tank and sent back to the combustion system to realize closed loop use of the flammable gas, that is, The flammable gas of some of the distillation by-products is sent back to the distillation machine for the distillation fuel.

Claims

1. 一种城市污水处理厂生化污泥和城市生活废油脂综合处理方法， 包括生化污泥千馏处理和废油脂处理， 其特征是该综合处理方法的步骤 为： 1. A comprehensive treatment method for biochemical sludge and urban living waste oil in a municipal sewage treatment plant, including biochemical sludge distillation treatment and waste oil treatment, characterized in that the steps of the comprehensive treatment method are:
A. 废油脂处理  A. Waste grease treatment
将废油脂经过压滤除杂脱水后与柴油混合形成混合燃油，在混合燃油 中废油脂体积占混合燃油体积的 30-80 % ;  The waste grease is dehydrated by pressure filtration, mixed with diesel oil to form a mixed fuel, and the volume of waste grease in the mixed fuel accounts for 30-80% of the volume of the mixed fuel;
B. 生化污泥千馏处理  B. Biochemical sludge distillation
生化污泥经脱水后，输送到污泥千馏机组内进行脱水和千馏处理，千 馏过程中以混合燃油及生化污泥千馏后的可燃性气体作为千馏燃料，污泥 千馏过程是在密封、 无氧、 非燃和高于 300°C温度状态下进行， 在千馏过 程中，将生化污泥中的水分转化为水蒸汽，部分生化污泥转化为可燃性气 体， 部分生化污泥转化成生物炭；  After dehydration, the biochemical sludge is transported to the sludge distillation unit for dehydration and distillation. In the process of distillation, the combustible gas after the mixed fuel and biochemical sludge is used as the distillation fuel, and the sludge distillation process It is carried out under the conditions of sealed, anaerobic, non-combustible and higher than 300 °C. In the process of distillation, the water in the biochemical sludge is converted into water vapor, and some biochemical sludge is converted into flammable gas, part of biochemistry. Conversion of sludge into biochar;
C. 将由步骤 A制得的混合燃料油及由步骤 B中制得的可燃性气体输 送到生化污泥千馏的燃烧系统中作为进行千馏处理的燃料。  C. The mixed fuel oil obtained in the step A and the combustible gas obtained in the step B are sent to a combustion system of a biochemical sludge fraction as a fuel for the distillation treatment.
2. 根据权利要求 1所述的城市污水处理厂生化污泥和城市生活废油 脂综合处理方法， 其特征是生化污泥千馏处理的控制温度为 300-850°C。  2. The method for comprehensively treating biochemical sludge and urban living waste oil in a municipal sewage treatment plant according to claim 1, wherein the control temperature of the biochemical sludge distillation treatment is 300-850 °C.
3. 根据权利要求 1所述的城市污水处理厂生化污泥和城市生活废油 脂综合处理方法， 其特征是废油脂通过酸洗、 碱洗、 水洗、 千燥后与柴油 混合制成混合燃油， 在混合燃油中废油脂的体积占混合燃油体积的 30-80 %。  3. The method for comprehensively treating municipal sewage treatment plant biochemical sludge and urban living waste oil according to claim 1, characterized in that the waste oil is mixed with diesel oil by pickling, caustic washing, water washing, drying, and mixing with diesel fuel. The volume of waste grease in the mixed fuel accounts for 30-80% of the volume of the mixed fuel.
PCT/CN2009/076300 2009-12-30 2009-12-30 Integrated treatment method of biochemical sludge in municipal wastewater treatment plant and municipal waste grease WO2011079450A1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105645714A (en) * 2015-12-31 2016-06-08 杭州隽琛环保有限公司 Device and method for treating sludge through desiccation and carbonization combined method by utilizing steam of thermal power plant
CN110217971A (en) * 2019-05-29 2019-09-10 安徽省通源环境节能股份有限公司 A kind of sludge base charcoal preparation method and application

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Publication number Priority date Publication date Assignee Title
CN1446889A (en) * 2002-03-21 2003-10-08 杨茂华 Compounding diesel oil dispensed from purified hogwash oil
JP2008031262A (en) * 2006-07-27 2008-02-14 Japan Sewage Works Agency Method for stabilization-treating carbonized product
CN101318759A (en) * 2008-07-11 2008-12-10 谢忠诚 Resource regeneration processing method and equipment for urban sewage sludge

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
CN1446889A (en) * 2002-03-21 2003-10-08 杨茂华 Compounding diesel oil dispensed from purified hogwash oil
JP2008031262A (en) * 2006-07-27 2008-02-14 Japan Sewage Works Agency Method for stabilization-treating carbonized product
CN101318759A (en) * 2008-07-11 2008-12-10 谢忠诚 Resource regeneration processing method and equipment for urban sewage sludge

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105645714A (en) * 2015-12-31 2016-06-08 杭州隽琛环保有限公司 Device and method for treating sludge through desiccation and carbonization combined method by utilizing steam of thermal power plant
CN110217971A (en) * 2019-05-29 2019-09-10 安徽省通源环境节能股份有限公司 A kind of sludge base charcoal preparation method and application

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