WO2024020656A1 - Industrial wastewater and sewage treatment system using the flotation process and related equipment - Google Patents

Industrial wastewater and sewage treatment system using the flotation process and related equipment Download PDF

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Publication number
WO2024020656A1
WO2024020656A1 PCT/BR2022/050292 BR2022050292W WO2024020656A1 WO 2024020656 A1 WO2024020656 A1 WO 2024020656A1 BR 2022050292 W BR2022050292 W BR 2022050292W WO 2024020656 A1 WO2024020656 A1 WO 2024020656A1
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Prior art keywords
effluent
sewage treatment
industrial
flotation process
treatment system
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PCT/BR2022/050292
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French (fr)
Portuguese (pt)
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Marcelo Rachewsky FERMANN
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Fermann Marcelo Rachewsky
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Priority to PCT/BR2022/050292 priority Critical patent/WO2024020656A1/en
Publication of WO2024020656A1 publication Critical patent/WO2024020656A1/en

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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities

Definitions

  • the present invention belongs to the technological sector of effluent treatment and refers, more specifically, to an industrial and sanitary sewage treatment system through the process through a physical-chemical process of flocculation, flocculation or decantation flocculation .
  • This process traditionally used, causes the effluents to be pumped by a motor pump, followed by a hydraulic line composed of a coagulator and flocculator (generally, hydraulic mixers), this being the coagulation/flocculation stage (commonly called flocculation).
  • a coagulator and flocculator generally, hydraulic mixers
  • a second hydraulic line is traditionally used to saturate air in the water, called a recycle line. This process consists of collecting treated water in the float itself, injecting compressed air to saturate the air with water and returning saturated water to the system to generate microbubbles.
  • the recycle line through its motor pump, collects clarified water from inside the float, sends it to the pressure vessel for saturation and returns it to the float in the contact zone.
  • the aforementioned does not use a saturator vessel, but a recycling line.
  • the present system proposes the generation of microbubbles at atmospheric pressure from the power pump, using the same hydraulic line as the coagulation/flocculation stage, making the use of a recycle line unnecessary.
  • the present system proposes the generation of microbubbles at atmospheric pressure from the power pump, using the same hydraulic line as the coagulation/flocculation stage, making the use of a recycle line unnecessary, not This is the objective of the Chinese anteriority mentioned above.
  • German document EP2800730 “COAGULATION/FLOCCULATION APPARATUS FOR THE TREATMENT OF A HYDRAULIC FLOW, AND IMPLEMENTATION PROCESS”, which presents a coagulation/flocculation apparatus for the treatment of an effluent flow of any type of liquid, upstream of a physical separation element, in particular upstream of a water treatment unit, in particular a membrane filtration unit, comprising at least one coagulator with coagulant injection, followed by a flocculator, which are successively passed through the hydraulic flow.
  • this system is equipped with equipment responsible for clarifying the effluents in three stages, namely aeration, coagulation and aerated flocculation.
  • this system aims to propose equipment that promotes the clarification of effluents, using the same hydraulic line as the coagulation/flocculation stage, making the use of a line unnecessary. of recycling and, therefore, surpassing traditionally known processes.
  • Figure 2 represents the arrangement of the injectors (5) and the respective alkalizing agents (11), acidulants (12) and flocculants (13).
  • Figure 3 represents the operation flowchart of said system, highlighting its three main stages.
  • the motor pump (1) suctions effluent and air, both at atmospheric pressure.
  • the motor pump (1 ) preferably equipped with a two-pole motor, which preferably rotates at 3,600 rpm, air and effluent are sheared and part of the air is dissolved in the effluent.
  • pump (3) is pumped up, the effluent is pressurized, preferably between 2 and 4 kgf/cm 2 , so that air dissolution is maintained.
  • the hydraulic piping (10) is equipped with a gate valve (4) for flow control.
  • the effluent, when passing through the gate valve (4) is depressurized to atmospheric pressure, and at this point, the dissolved air precipitates in the form of microair bubbles.
  • the effluent loaded with air microbubbles goes to the coagulation stage (B).
  • the aerated flocculation step (C) uses an injector (5) for dosing flocculant (13) and a hydraulic flocculator (7) for flocculation and aeration of flocs. Throughout the set, the flocculant aggregates clots and microbubbles of air, turning them into aerated flakes ready for flotation. In the outlet pipe (8), the clarified effluent and aerated flakes are ready for separation, either through flotation, filtration, or other compatible processes.

Abstract

In general, the present invention pertains to the effluent treatment technology sector and relates, more specifically, to an industrial wastewater and sewage treatment system using the physical-chemical processes of flocculation-flotation or flocculation-decantation. The equipment for treating industrial wastewater and sewage comprises a motorized pump (1) connected to an inlet pipe (2), a pump discharge (3), to which a gate valve (4) is fastened, injectors (5) with an alkalizing agent (11), an acidifying agent (12) and a flocculant (13), a hydraulic coagulant (6) and a hydraulic flocculant (7) and an outlet pipe (8). Using the above as a starting point, the claimed system is carried out in three steps, which are: A: aeration; B: coagulation; and C: aerated flocculation, to clarify the effluents.

Description

SISTEMA DE TRATAMENTO DE ESGOTO INDUSTRIAL E SANITÁRIO ATRAVÉS DO PROCESSO DE FLOTAÇÃO E RESPECTIVO EQUIPAMENTO INDUSTRIAL AND SANITARY SEWAGE TREATMENT SYSTEM THROUGH THE FLOTATION PROCESS AND RESPECTIVE EQUIPMENT
Setor tecnológico da invenção Technological invention sector
[01] De uma maneira geral a presente invenção pertence ao setor tecnológico de tratamento de efluentes e se refere, mais especificamente, a um sistema de tratamento de esgoto industrial e sanitário através do processo através de processo físico-químico de floculação flotação ou floculação decantação. [01] In general, the present invention belongs to the technological sector of effluent treatment and refers, more specifically, to an industrial and sanitary sewage treatment system through the process through a physical-chemical process of flocculation, flocculation or decantation flocculation .
Estado da técnica conhecido Known state of the art
[02] A problemática do tratamento de efluentes é tema de alta relevância, especialmente do ponto de vista industrial e sanitário, sendo uma exigência presente em praticamente todas as legislações ambientais pelo mundo. Nesse sentido, quando os requisitos legais não são cumpridos, especialmente pelas indústrias, severas sanções podem ser aplicadas, variando desde elevadas multas até mesmo a interdição das atividades industriais. [02] The issue of effluent treatment is a highly relevant topic, especially from an industrial and health point of view, being a requirement present in practically all environmental legislation around the world. In this sense, when legal requirements are not met, especially by industries, severe sanctions can be applied, ranging from high fines to even the ban on industrial activities.
[03] Ao passo que, a cada dia a fiscalização e as leis se tornam mais rigorosas, a busca por soluções eficazes, e ao mesmo tempo rentáveis, visando otimizar o tratamento de efluentes no processo industrial, sem que isso comprometa o orçamento da empresa, se torna mais intensa. [04] Para esse fim, diversos processos de tratamento são conhecidos e utilizados atualmente, tal como a floculação/f lotação, que é um processo já consagrado e largamente utilizado nas atividades de tratamento de água e efluentes industriais e sanitários. [03] While every day inspection and laws become more rigorous, the search for effective and at the same time profitable solutions, aiming to optimize the treatment of effluents in the industrial process, without compromising the company's budget , becomes more intense. [04] For this purpose, several treatment processes are known and currently used, such as flocculation/flotation, which is a process already established and widely used in water treatment activities and industrial and sanitary effluents.
[05] Esse processo, tradicionalmente utilizado, faz com que os efluentes sejam bombeados por uma motobomba, seguindo por uma linha hidráulica composta por coagulador e floculador (geralmente, misturadores hidráulicos), sendo essa a etapa de coagulação/floculação (comumente, chamada de floculação). [05] This process, traditionally used, causes the effluents to be pumped by a motor pump, followed by a hydraulic line composed of a coagulator and flocculator (generally, hydraulic mixers), this being the coagulation/flocculation stage (commonly called flocculation).
[06] Os produtos químicos então são dosados e misturados, precipitando os contaminantes dissolvidos no efluente, que se tornam aparentes na forma de flocos. Após a floculação, o efluente segue, então, para a primeira etapa do processo de flotação, dentro do flotador, na chamada zona de contato. [06] The chemicals are then dosed and mixed, precipitating the contaminants dissolved in the effluent, which become apparent in the form of flakes. After flocculation, the effluent then goes to the first stage of the flotation process, inside the float, in the so-called contact zone.
[07] E m paralelo à etapa de floculação, tradicionalmente utiliza-se uma segunda linha hidráulica para saturação de ar na água, chamada de linha de reciclo. Esse processo consiste em coletar água tratada no próprio flotador, injetar ar comprimido para saturação de ar em água e retornar ao sistema água saturada para geração de microbolhas. [07] In parallel to the flocculation stage, a second hydraulic line is traditionally used to saturate air in the water, called a recycle line. This process consists of collecting treated water in the float itself, injecting compressed air to saturate the air with water and returning saturated water to the system to generate microbubbles.
[08] A partir de então, geralmente são seguidas as seguintes etapas: [09] Primeiro, a água é bombeada para um vaso de pressão (saturador), a aproximadamente 4 kgf/cm2 (conforme largamente difundido no estado da arte), que está ligado a um compressor para injeção de ar para dissolução na água. [08] From then on, the following steps are generally followed: [09] First, the water is pumped into a pressure vessel (saturator), at approximately 4 kgf/cm 2 (as widely known in the state of the art), which is connected to a compressor to inject air for dissolution in water.
[010] Após, a linha de reciclo, através de sua motobomba, coleta água clarificada de dentro do flotador, encaminha para o vaso de pressão para saturação e a retorna para o flotador na zona de contato. [010] Afterwards, the recycle line, through its motor pump, collects clarified water from inside the float, sends it to the pressure vessel for saturation and returns it to the float in the contact zone.
[011] Então, a água saturada ao entrar na zona de contato, que está sob pressão atmosférica, precipita o excesso de ar na forma de microbolhas. [011] Then, when saturated water enters the contact zone, which is under atmospheric pressure, excess air precipitates in the form of microbubbles.
[012] Já na zona de contato, por fim, os efluentes floculados e microbolhas se misturam, formando flocos aerados, isto é, as microbolhas aderem- se aos flocos tornando-os mais leves, e, desta forma, os flocos são direcionados para o topo do flotador onde forma- se o lodo. Finalmente, uma vez no topo, o lodo é removido e, na parte inferior do flotador, a água tratada é coletada e devidamente destinada. [013] Existem, ainda, alternativas que representam o atual estado da técnica e que são descritas em documentos patentários. Destaca-se a patente de invenção PI 0406106-3 “SISTEMA PARA TRATAMENTO DE ÁGUAS QUE INCORPORA UM REATOR DE GERAÇÃO DE FLOCOS COM ELEVADA FORMAÇÃO DE FLOCOS, E, PROCESSO PARA TRATAMENTO DE ÁGUAS E EFLUENTES” que revela um reator para a geração de flocos, para ser utilizado em sistemas de floculação que aproveitam a energia cinética do fluxo hidráulico e compreende a formação de flocos aerados assim como também um sistema de tratamento de efluentes por floculação, em linha, utilizando o referido reator. [012] In the contact zone, finally, the flocculated effluents and microbubbles mix, forming aerated flakes, that is, the microbubbles adhere to the flakes, making them lighter, and, in this way, the flakes are directed towards the top of the float where it forms if the slime. Finally, once at the top, the sludge is removed and, at the bottom of the float, the treated water is collected and properly disposed of. [013] There are also alternatives that represent the current state of the art and that are described in patent documents. Of note is the invention patent PI 0406106-3 “WATER TREATMENT SYSTEM INCORPORATING A REACTOR FOR GENERATING FLAKES WITH HIGH FORMATION OF FLAKES, AND PROCESS FOR TREATMENT OF WATER AND EFFLUENTS” which reveals a reactor for the generation of flakes , to be used in flocculation systems that take advantage of the kinetic energy of the hydraulic flow and comprise the formation of aerated flocs as well as an in-line flocculation effluent treatment system, using the aforementioned reactor.
[014] Todavia, como se observa, a referida anterioridade não utiliza vaso saturador, mas linha de reciclo. Já o presente sistema propõe a geração de microbolhas à pressão atmosférica a partir da motobomba de alimentação, utilizando a mesma linha hidráulica da etapa de coagulação/floculação, tornando desnecessária a utilização de linha de reciclo. [014] However, as can be seen, the aforementioned does not use a saturator vessel, but a recycling line. The present system proposes the generation of microbubbles at atmospheric pressure from the power pump, using the same hydraulic line as the coagulation/flocculation stage, making the use of a recycle line unnecessary.
[015] Há também a patente chinesa CN205892794 “SEWAGE TREATMENT'S FLOCCULATION FLOTATION EQUIPMENT”, a qual revela um equipamento de tratamento de esgoto, que inclui uma coluna de ar interior no tubo externo e centro, sendo o tubo externo de um lado formado por um tubo de admissão formado com o leito de ar entre a parede externa do tubo poroso e a parede interna do tubo externo, a coluna de ar é enviada para a passagem de fluido com regulação do pH e interpolação de agente floculante. [016] Contudo, essa anterioridade apresenta um meio distinto para realizar o tratamento de efluentes daquele ora proposto, tornando-se custoso e significativamente mais complexo que o sistema em questão. Além disso, de forma análoga à anterioridade brasileira, o presente sistema propõe a geração de microbolhas à pressão atmosférica a partir da motobomba de alimentação, utilizando a mesma linha hidráulica da etapa de coagulação/floculação, tornando desnecessária a utilização de linha de reciclo, não sendo esse o objetivo da anterioridade chinesa ora citada. [015] There is also the Chinese patent CN205892794 “SEWAGE TREATMENT'S FLOCCULATION FLOTATION EQUIPMENT”, which discloses a sewage treatment equipment, which includes an inner air column in the outer and center tube, the outer tube on one side being formed by a intake tube formed with the air bed between the outer wall of the porous tube and the inner wall of the outer tube, the air column is sent to the fluid passage with pH regulation and flocculating agent interpolation. [016] However, this priority presents a different means of carrying out effluent treatment than that proposed here, becoming costly and significantly more complex than the system in question. Furthermore, in a similar way to the previous Brazilian approach, the present system proposes the generation of microbubbles at atmospheric pressure from the power pump, using the same hydraulic line as the coagulation/flocculation stage, making the use of a recycle line unnecessary, not This is the objective of the Chinese anteriority mentioned above.
[017] Por fim, é possível citar o documento alemão EP2800730 “COAGULATION/FLOCCULATION APPARATUS FOR THE TREATMENT OF A HYDRAULIC FLOW, AND IMPLEMENTATION PROCESS”, o qual apresenta um aparelho de coagulação/floculação para o tratamento de um fluxo de efluentes de qualquer tipo de líquido, a montante de um elemento de separação física, em particular a montante de uma unidade de tratamento de água, em particular uma unidade de filtragem de membrana, compreendendo pelo menos um coagulador com injeção de coagulante, seguido por um floculador, que são sucessivamente passados pelo fluxo hidráulico. [017] Finally, it is possible to cite the German document EP2800730 “COAGULATION/FLOCCULATION APPARATUS FOR THE TREATMENT OF A HYDRAULIC FLOW, AND IMPLEMENTATION PROCESS”, which presents a coagulation/flocculation apparatus for the treatment of an effluent flow of any type of liquid, upstream of a physical separation element, in particular upstream of a water treatment unit, in particular a membrane filtration unit, comprising at least one coagulator with coagulant injection, followed by a flocculator, which are successively passed through the hydraulic flow.
[018] Porém, a referida anterioridade não se destinada à geração de microbolhas à pressão atmosférica a partir da motobomba de alimentação, utilizando a mesma linha hidráulica da etapa de coagulação/floculação, tornando desnecessária a utilização de linha de reciclo. [018] However, the aforementioned is not intended for the generation of microbubbles at atmospheric pressure from the power pump, using the same hydraulic line as the coagulation/flocculation stage, making the use of a recycle line unnecessary.
[019] Com isso, a partir de todos os inconvenientes existentes nos sistemas e equipamentos atualmente utilizados, é visível a existência da necessidade de criação de um sistema de tratamento de esgoto industrial e sanitário através do processo de flotação o qual utilize um equipamento que destine-se à geração de microbolhas à pressão atmosférica a partir da motobomba de alimentação, utilizando a mesma linha hidráulica da etapa de coagulação/floculação, tornando desnecessária a utilização de linha de reciclo. [019] Therefore, based on all the drawbacks existing in the systems and equipment currently used, it is clear that there is a need to create an industrial and sanitary sewage treatment system through the flotation process which uses a equipment intended for the generation of microbubbles at atmospheric pressure from the power pump, using the same hydraulic line as the coagulation/flocculation stage, making the use of a recycle line unnecessary.
Novidades e objetivos da invenção News and objectives of the invention
[020] Com a finalidade de otimizar o processo de tratamento de efluentes industriais e sanitários por meio floculação/f lotação ou floculação/decantação, o sistema ora revelado promove a geração de microbolhas à pressão atmosférica a partir da motobomba de alimentação, utilizando a mesma linha hidráulica da etapa de coagulação floculação, e, graças a isso, torna dispensável a linha de reciclo, reduzindo custos operacionais e simplificando os complexos sistemas de tratamento de efluentes tradicionalmente utilizados no estado da arte. [020] In order to optimize the process of treating industrial and sanitary effluents through flocculation/flotation or flocculation/decantation, the system now disclosed promotes the generation of microbubbles at atmospheric pressure from the supply motorpump, using the same hydraulic line of the coagulation and flocculation stage, and, thanks to this, makes the recycle line unnecessary, reducing operational costs and simplifying the complex effluent treatment systems traditionally used in the state of the art.
[021] Para tanto, esse sistema é dotado de equipamento responsável por clarificar os efluentes em três etapas, sendo elas a aeração, a coagulação e a floculação aerada. [021] To this end, this system is equipped with equipment responsible for clarifying the effluents in three stages, namely aeration, coagulation and aerated flocculation.
[022] Assim sendo, visando avançar frente às falhas do estado atual da técnica anteriormente destacadas, esse sistema visa propor um equipamento que promova a clarificação dos efluentes, utilizando a mesma linha hidráulica da etapa de coagulação/floculação, tornando desnecessária a utilização de linha de reciclo e, por isso, superando os processos tradicionalmente conhecidos. [022] Therefore, aiming to advance in the face of the flaws in the current state of the art previously highlighted, this system aims to propose equipment that promotes the clarification of effluents, using the same hydraulic line as the coagulation/flocculation stage, making the use of a line unnecessary. of recycling and, therefore, surpassing traditionally known processes.
Descrição dos desenhos anexos Description of attached drawings
[023] A fim de que a presente invenção seja plenamente compreendida e levada à prática por qualquer técnico deste setor tecnológico, a mesma será descrita de forma clara, concisa e suficiente, tendo como base os desenhos anexos, que a ilustram e subsidiam abaixo listados: [024] A figura 1 representa um diagrama do equipamento ora proposto, evidenciando seus componentes. [023] In order for the present invention to be fully understood and put into practice by any technician in this technological sector, it will be described in a clear, concise and sufficient manner, based on the attached drawings, which illustrate and support it listed below : [024] Figure 1 represents a diagram of the equipment proposed here, showing its components.
[025] A figura 2 representa a disposição dos injetores (5) e os respectivos agentes alcalinizantes (1 1 ), acidulantes (12) e floculantes (13). [025] Figure 2 represents the arrangement of the injectors (5) and the respective alkalizing agents (11), acidulants (12) and flocculants (13).
[026] A figura 3 representa o fluxograma de operação do referido sistema, evidenciando suas três etapas principais. [026] Figure 3 represents the operation flowchart of said system, highlighting its three main stages.
Descrição detalhada da invenção Detailed description of the invention
[027] A fim de que o presente sistema possa ser levado à prática por qualquer técnico com razoável conhecimento no assunto, o mesmo deve contar com um equipamento para o tratamento de esgoto industrial e sanitário composto por uma motobomba (1 ) conectada a uma tubulação de entrada (2), recalque da bomba (3), na qual é fixada uma válvula gaveta (4), injetores (5), um coagulador hidráulico (6) e um floculador hidráulico (7) e uma tubulação de saída (8). [027] In order for the present system to be put into practice by any technician with reasonable knowledge on the subject, it must have equipment for the treatment of industrial and sanitary sewage composed of a motor pump (1) connected to a pipe input (2), pump discharge (3), to which a gate valve (4), injectors (5), a hydraulic coagulator (6) and a hydraulic flocculator (7) and an outlet pipe (8) are fixed. .
[028] A partir disso, o sistema ora proposto desenvolve-se através de três etapas, quais sejam: A - aeração, B - coagulação e C - floculação aerada. [028] From this, the system now proposed develops through three stages, namely: A - aeration, B - coagulation and C - aerated flocculation.
[029] Na etapa de aeração (A), a motobomba (1 ), em sua tubulação de entrada (2), succiona efluente e ar, ambos à pressão atmosférica. Ao passarem pelo interior da motobomba (1 ), dotada, preferencialmente, de um motor de dois polos, que gira, preferencialmente, a 3.600 rpm, ar e efluente são cisalhados e parte do ar é dissolvido no efluente. No recalque da bomba (3), o efluente é pressurizado, preferencialmente entre 2 e 4 kgf/cm2, para que a dissolução de ar seja mantida. [029] In the aeration stage (A), the motor pump (1), in its inlet pipe (2), suctions effluent and air, both at atmospheric pressure. When passing through the interior of the motor pump (1 ), preferably equipped with a two-pole motor, which preferably rotates at 3,600 rpm, air and effluent are sheared and part of the air is dissolved in the effluent. When pump (3) is pumped up, the effluent is pressurized, preferably between 2 and 4 kgf/cm 2 , so that air dissolution is maintained.
[030] A tubulação hidráulica (10) é equipada com uma válvula gaveta (4) para controle de vazão. O efluente, ao passar pela válvula gaveta (4) é despressurizado até a pressão atmosférica, e, neste momento, o ar dissolvido precipita-se na forma de microbolhas de ar. O efluente carregado de microbolhas de ar segue para etapa de coagulação (B). [030] The hydraulic piping (10) is equipped with a gate valve (4) for flow control. The effluent, when passing through the gate valve (4) is depressurized to atmospheric pressure, and at this point, the dissolved air precipitates in the form of microair bubbles. The effluent loaded with air microbubbles goes to the coagulation stage (B).
[031] Na etapa de coagulação (B), através de injetores (5), vide figura 2, instalados na linha hidráulica (10), o efluente recebe adição de alcalinizante (11) ou acidulante (12) para a estabilização do pH (preferencialmente, pH = 7) e coagulante. A partir disso, efluente e reagentes são misturados no coagulador hidráulico (6), dando início ao processo de clarificação da água. Ao final desta etapa coágulos e microbolhas presentes no efluente seguem para a etapa de floculação aerada (C). [031] In the coagulation stage (B), through injectors (5), see figure 2, installed in the hydraulic line (10), the effluent receives the addition of alkalinizer (11) or acidulant (12) to stabilize the pH ( preferably, pH = 7) and coagulant. From there, effluent and reagents are mixed in the hydraulic coagulator (6), starting the water clarification process. At the end of this stage, clots and microbubbles present in the effluent go to the aerated flocculation stage (C).
[032] A etapa de floculação aerada (C) utiliza um injetor (5) para dosagem de floculante (13) e um floculador hidráulico (7) para floculação e aeração de flocos. Ao longo do conjunto, o floculante agrega coágulos e microbolhas de ar tornando-os em flocos aerados prontos para flotação. Na tubulação de saída (8) o efluente clarificado e flocos aerados estão prontos para a separação, seja através de flotação, filtração, e demais processos compatíveis. [032] The aerated flocculation step (C) uses an injector (5) for dosing flocculant (13) and a hydraulic flocculator (7) for flocculation and aeration of flocs. Throughout the set, the flocculant aggregates clots and microbubbles of air, turning them into aerated flakes ready for flotation. In the outlet pipe (8), the clarified effluent and aerated flakes are ready for separation, either through flotation, filtration, or other compatible processes.
[033] É importante salientar que as figuras e descrição realizadas não possuem o condão de limitar as formas de execução do sistema ora proposto, mas sim de ilustrar e tornar compreensíveis suas etapas e execução reveladas nesta solução. Desse modo, as descrições e imagens devem ser interpretadas de forma ilustrativa e não limitativa, podendo existir outras formas equivalentes ou análogas de implementação do conceito inventivo ora revelado e que não fujam do espectro de proteção delineado na solução proposta. [033] It is important to highlight that the figures and description made do not have the power to limit the ways of implementing the system proposed here, but rather to illustrate and make understandable its steps and execution revealed in this solution. Therefore, the descriptions and images must be interpreted in an illustrative and non-limiting way, and there may be other equivalent or analogous ways of implementing the inventive concept now revealed and which do not deviate from the spectrum of protection outlined in the proposed solution.
[034] Tratou-se no presente relatório descritivo de um sistema de tratamento de esgoto industrial e sanitário através do processo através de processo físico-químico de floculação flotação ou floculação decantação, dotado de novidade, atividade inventiva, suficiência descritiva, aplicação industrial e, consequentemente, revestido de todos os requisitos essenciais para a concessão do privilégio pleiteado. [034] This descriptive report deals with an industrial and sanitary sewage treatment system through the process through of a physical-chemical process of flocculation flotation or decantation flocculation, endowed with novelty, inventive activity, descriptive sufficiency, industrial application and, consequently, covered by all the essential requirements for granting the privilege sought.

Claims

REIVINDICAÇÕES: CLAIMS:
1 . EQUIPAMENTO DE TRATAMENTO DE ESGOTO INDUSTRIAL E SANITÁRIO ATRAVÉS DO PROCESSO DE FLOTAÇÃO caracterizado por possuir uma motobomba (1 ) conectada a uma tubulação de entrada (2), recalque da bomba (3), na qual é fixada uma válvula gaveta (4), injetores (5) com alcalinizante (1 1 ), acidulante (12) e floculante (13), um coagulador hidráulico (6) e um floculador hidráulico (7) e uma tubulação de saída (8). 1 . INDUSTRIAL AND SANITARY SEWAGE TREATMENT EQUIPMENT THROUGH THE FLOTATION PROCESS characterized by having a motor pump (1) connected to an inlet pipe (2), pump discharge (3), to which a gate valve (4) is fixed, injectors (5) with alkalizer (11), acidulant (12) and flocculant (13), a hydraulic coagulator (6) and a hydraulic flocculator (7) and an outlet pipe (8).
2. EQUIPAMENTO DE TRATAMENTO DE ESGOTO INDUSTRIAL E SANITÁRIO ATRAVÉS DO PROCESSO DE FLOTAÇÃO conforme reivindicação 1 , e ainda caracterizado pela motobomba (1 ) ser dotada de um motor de dois polos que gira a 3.600 rpm.2. INDUSTRIAL AND SANITARY SEWAGE TREATMENT EQUIPMENT THROUGH THE FLOTATION PROCESS as per claim 1, and further characterized by the motor pump (1) being equipped with a two-pole motor that rotates at 3,600 rpm.
3. SISTEMA DE TRATAMENTO DE ESGOTO INDUSTRIAL E SANITÁRIO ATRAVÉS DO PROCESSO DE FLOTAÇÃO caracterizado por apresentar as seguintes etapas: 3. INDUSTRIAL AND SANITARY SEWAGE TREATMENT SYSTEM THROUGH THE FLOTATION PROCESS characterized by presenting the following steps:
(A) Etapa de Aeração; (A) Aeration Stage;
(B) Etapa de Coagulação; (B) Coagulation Step;
(C) Etapa de Floculação Aerada. (C) Aerated Flocculation Step.
4. SISTEMA DE TRATAMENTO DE ESGOTO INDUSTRIAL E SANITÁRIO ATRAVÉS DO PROCESSO DE FLOTAÇÃO conforme reivindicação 3, e ainda caracterizado pela etapa de Aeração (A) succionar efluente e ar à pressão atmosférica através da motobomba (1 ) pela tubulação de entrada (2), sendo que tanto ar quanto efluente são cisalhados, dissolvendo o ar no efluente, sendo que no recalque da bomba (3) o efluente é pressurizado.4. INDUSTRIAL AND SANITARY SEWAGE TREATMENT SYSTEM THROUGH THE FLOTATION PROCESS as per claim 3, and further characterized by the Aeration stage (A) suctioning effluent and air at atmospheric pressure through the motor pump (1) through the inlet pipe (2), whereby both air and effluent are sheared, dissolving the air in the effluent, and in the discharge of the pump (3) the effluent is pressurized.
5. SISTEMA DE TRATAMENTO DE ESGOTO INDUSTRIAL E SANITÁRIO ATRAVÉS DO PROCESSO DE FLOTAÇÃO conforme reivindicação 3 e 4, e ainda caracterizado por pressurizar o efluente entre 2 e 4 kgf/cm2. SISTEMA DE TRATAMENTO DE ESGOTO INDUSTRIAL E SANITÁRIO ATRAVÉS DO PROCESSO DE FLOTAÇÃO conforme reivindicação 3, e ainda caracterizado por conter uma tubulação hidráulica (10) equipada com válvula gaveta (4), sendo que o efluente que passa pela válvula gaveta (4) é despressurizado até a pressão atmosférica, precipitando-se o ar dissolvido na forma de microbolhas de ar. SISTEMA DE TRATAMENTO DE ESGOTO INDUSTRIAL E SANITÁRIO ATRAVÉS DO PROCESSO DE FLOTAÇÃO conforme reivindicação 3, e ainda caracterizado pela etapa de coagulação (B) adicionar alcalinizante ou ácido para a estabilização do pH do efluente e coagulante através dos injetores (5) instalados na linha hidráulica (10), sendo o efluente e reagentes misturados no coagulador hidráulico (6). SISTEMA DE TRATAMENTO DE ESGOTO INDUSTRIAL E SANITÁRIO ATRAVÉS DO PROCESSO DE FLOTAÇÃO conforme reivindicação 3 e 7, e ainda caracterizado pela estabilização do pH se dar com pH = 7. SISTEMA DE TRATAMENTO DE ESGOTO INDUSTRIAL E SANITÁRIO ATRAVÉS DO PROCESSO DE FLOTAÇÃO conforme reivindicação 3, e ainda caracterizado pela etapa de floculação aerada (C) utilizar um injetor (5) para dosagem de floculante e um floculador hidráulico (7) para floculação e aeração de flocos, agregando coágulos e microbolhas de ar e convertendo- os em flocos aerados para flotação, sendo que na tubulação de saída (8) o efluente clarificado e flocos aerados estão prontos para a separação. 5. INDUSTRIAL AND SANITARY SEWAGE TREATMENT SYSTEM THROUGH THE FLOTATION PROCESS as per claims 3 and 4, and further characterized by pressurizing the effluent between 2 and 4 kgf/cm 2 . INDUSTRIAL AND SANITARY SEWAGE TREATMENT SYSTEM THROUGH THE FLOTATION PROCESS as per claim 3, and further characterized by containing a hydraulic pipe (10) equipped with a gate valve (4), and the effluent that passes through the gate valve (4) is depressurized up to atmospheric pressure, precipitating the dissolved air in the form of microair bubbles. INDUSTRIAL AND SANITARY SEWAGE TREATMENT SYSTEM THROUGH THE FLOTATION PROCESS as per claim 3, and further characterized by the coagulation step (B) adding alkalinizer or acid to stabilize the pH of the effluent and coagulant through the injectors (5) installed in the hydraulic line (10), with the effluent and reagents mixed in the hydraulic coagulator (6). INDUSTRIAL AND SANITARY SEWAGE TREATMENT SYSTEM THROUGH THE FLOTATION PROCESS as per claims 3 and 7, and further characterized by pH stabilization occurring at pH = 7. INDUSTRIAL AND SANITARY SEWAGE TREATMENT SYSTEM THROUGH THE FLOTATION PROCESS as per claim 3, and further characterized by the aerated flocculation step (C) using an injector (5) for flocculant dosing and a hydraulic flocculator (7) for flocculation and aeration of flakes, aggregating clots and air microbubbles and converting them into aerated flakes for flotation , and in the outlet pipe (8) the clarified effluent and aerated flakes are ready for separation.
PCT/BR2022/050292 2022-07-25 2022-07-25 Industrial wastewater and sewage treatment system using the flotation process and related equipment WO2024020656A1 (en)

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