CN114409225A - Microbial sludge dehydrating agent and preparation method thereof - Google Patents

Abstract

The invention discloses a microbial sludge dehydrating agent and a preparation method thereof, wherein the sludge dehydrating agent comprises an acidophilic bacteria solution, an aspergillus tubingensis solution, a bacteria secretion extracellular enzyme solution, a lysozyme solution, polyacrylate, wood cellulose, tourmaline stone powder, a polyacrylamide solution, a sludge stripping agent solution, a sludge wall breaking agent solution and a sludge surface structure modifier solution, and the method can thoroughly destroy the adsorption and wrapping effects of sludge extracellular polymers on water under the combined action of acidophilic bacteria, aspergillus tubingensis, bacteria secretion extracellular enzymes and lysozyme by adding the acidophilic bacteria solution, the aspergillus tubingensis solution, the bacteria secretion extracellular enzymes and the lysozyme solution, so that the sludge is easier to dehydrate, and the biological cell wall structure in the sludge can be destroyed, thereby the sludge floc structure is thoroughly disintegrated, the water in the sludge can be fully released, thereby achieving the purpose of deep dehydration of the sludge.

Description

Microbial sludge dehydrating agent and preparation method thereof

Technical Field

The invention relates to a dehydrating agent, in particular to a microbial sludge dehydrating agent and a preparation method thereof, belonging to the technical field of dehydrating agents.

Background

A sludge treatment method is provided for removing water from fluid primary, concentrated or digested sludge and converting the sludge into semi-solid or solid sludge blocks. After dewatering, the water content of the sludge can be reduced to fifty-five percent to eighty percent, depending on the properties of the sludge and the sediments and the efficiency of the dewatering equipment. The further dehydration of the sludge is called sludge drying, and the moisture content of the dried sludge is less than ten percent. The dehydration method mainly comprises a natural drying method, a mechanical dehydration method and a granulation method. The natural drying method and the mechanical dehydration method are suitable for sewage sludge. The granulation method is suitable for coagulating sedimentation sludge.

The sludge dewatering agent which is most commonly used at present is Cationic Polyacrylamide (CPAM), and although CPAM has a good sludge dewatering effect, the defect that CPAM is widely used as the sludge dewatering agent is increasingly shown, it is difficult to degrade under natural conditions, causes secondary pollution to the environment, and a large amount of organic solvents such as surfactants and the like used in the CPAM synthesis process also cause pollution to the environment, Chinese patent No. CN201510987557.3 discloses a preparation method of a composite biological sludge dehydrating agent, the invention selects target strains from residual sludge by taking bovine serum albumin, kanamycin and the like as screening nutrient substances, then culturing the sludge to obtain a composite biological sludge dehydrating agent base solution, carrying out acid-base treatment on pyrite cinder, reacting the treatment solution with sodium silicate to form a composite biological sludge dehydrating agent matrix, and then mixing the composite biological sludge dehydrating agent matrix with the composite biological sludge dehydrating agent base solution; because the microbial culture conditions are harsh, the extraction steps are complex, the enzyme product is easy to inactivate, and the cost of the sludge dehydrating agent is increased, the discovery of the dehydrating agent which has good sludge dehydrating performance, is environment-friendly and simple to prepare becomes a hotspot of current research.

Disclosure of Invention

The invention aims to provide a microbial sludge dehydrating agent and a preparation method thereof, which aim to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the sludge dehydrating agent comprises an acidophilic bacteria solution, an aspergillus tubingensis solution, a bacteria secretion extracellular enzyme solution, a lysozyme solution, a polyacrylate, wood cellulose, tourmaline powder, a polyacrylamide solution, a sludge stripping agent solution, a sludge wall breaking agent solution and a sludge surface structure modifier solution.

As a preferred technical scheme of the invention, the sludge dehydrating agent comprises the following components in percentage by weight: 2-5 parts of acidophilic bacteria, 1-2 parts of aspergillus tubingensis, 3-8 parts of bacteria secretion extracellular enzyme solution, 2-8 parts of lysozyme solution, 3-5 parts of polyacrylate, 5-10 parts of wood cellulose, 1-3 parts of tourmaline powder, 10-15 parts of polyacrylamide solution, 8-10 parts of sludge remover solution, 5-10 parts of sludge wall breaking agent solution and 3-10 parts of sludge surface structure modifier solution.

In a preferred embodiment of the present invention, the concentration of the eosinophilic bacterium solution and the concentration of the A.tubingensis solution are 1.6 × 10⁸And 1.2 x 10⁸。

As a preferred technical scheme of the invention, the enzyme activity of the bacteria secretion extracellular enzyme solution and the enzyme activity of the lysozyme solution are respectively 150-200U and 50-150U.

As a preferred technical scheme of the invention, the preparation method of the microbial sludge dehydrating agent comprises the following steps:

s1: weighing polyacrylate, tourmaline powder and wood cellulose in corresponding proportion, grinding into superfine powder, and screening with a 1500-mesh screen for later use;

s2: adding the polyacrylamide solution, the sludge remover solution, the sludge wall breaking agent solution and the sludge surface structure modifier solution in corresponding proportions into a reaction kettle, and stirring for 2-4 hours at the temperature of 30-40 ℃;

s3: dropwise adding the bacteria secretion extracellular enzyme solution and the lysozyme solution into the reaction kettle in the step S2, heating to 40-50 ℃, continuously stirring for 1-2 hours, and adding the acidophilic bacteria and the aspergillus tubingensis in corresponding proportions to obtain suspension containing the acidophilic bacteria and the aspergillus tubingensis;

s4: and (4) sequentially adding the polyacrylate ultrafine powder, the wood cellulose ultrafine powder and the tourmaline powder ultrafine powder obtained in the step (S1) into the uniformly mixed suspension in the step (S3) to obtain the sludge dewatering agent.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention relates to a microorganism sludge dehydrating agent and a preparation method thereof, which adds acidophilic bacteria solution, aspergillus tubingensis solution, bacteria secretion extracellular enzyme solution and lysozyme solution, under the combined action of acidophilic bacteria, aspergillus tubingensis, extracellular enzyme secreted by bacteria and lysozyme, the adsorption and wrapping effects of sludge extracellular polymers on water can be thoroughly destroyed, so that the sludge is easier to dehydrate, and can destroy the biological cell wall structure in the sludge, thereby leading the sludge floc structure to be thoroughly disintegrated and fully releasing the water in the sludge, the aim of deep dehydration of the sludge is further achieved, meanwhile, the corresponding acidophilic bacteria solution, aspergillus tubingensis solution, bacteria secretion ectoenzyme solution and lysozyme solution are obtained by adopting the existing production process, the preparation and the proportioning are simple, the material cost is low, the additional culture of microorganisms is not needed, and the sludge dehydration cost is saved.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a microbial sludge dehydrating agent and a technical scheme of a preparation method thereof, wherein the microbial sludge dehydrating agent comprises the following components in parts by weight:

the microbial sludge dehydrating agent comprises an acidophilic bacteria solution, an aspergillus tubingensis solution, a bacteria secretion extracellular enzyme solution, a lysozyme solution, a polyacrylate, wood cellulose, tourmaline powder, a polyacrylamide solution, a sludge stripping agent solution, a sludge wall breaking agent solution and a sludge surface structure modifier solution.

The sludge dehydrating agent comprises the following components in percentage by weight: 2-5 parts of acidophilic bacteria, 1-2 parts of aspergillus tubingensis, 3-8 parts of bacteria secretion extracellular enzyme solution, 2-8 parts of lysozyme solution, 3-5 parts of polyacrylate, 5-10 parts of wood cellulose, 1-3 parts of tourmaline powder, 10-15 parts of polyacrylamide solution, 8-10 parts of sludge remover solution, 5-10 parts of sludge wall breaking agent solution and 3-10 parts of sludge surface structure modifier solution.

The concentration of the acidophilic bacteria solution and the concentration of the A.tubingensis solution were 1.6 x 10, respectively⁸And 1.2 x 10⁸The enzyme activity of the bacteria secretion extracellular enzyme solution and the enzyme activity of the lysozyme solutionThe forces are 150-200U and 50-150U, respectively.

The preparation method of the microbial sludge dehydrating agent comprises the following steps:

s1: weighing polyacrylate, tourmaline powder and wood cellulose in corresponding proportion, grinding into superfine powder, and screening with a 1500-mesh screen for later use;

s2: adding the polyacrylamide solution, the sludge remover solution, the sludge wall breaking agent solution and the sludge surface structure modifier solution in corresponding proportions into a reaction kettle, and stirring for 2-4 hours at the temperature of 30-40 ℃;

s3: dropwise adding the bacteria secretion extracellular enzyme solution and the lysozyme solution into the reaction kettle in the step S2, heating to 40-50 ℃, continuously stirring for 1-2 hours, and adding the acidophilic bacteria and the aspergillus tubingensis in corresponding proportions to obtain suspension containing the acidophilic bacteria and the aspergillus tubingensis;

s4: and (4) sequentially adding the polyacrylate ultrafine powder, the wood cellulose ultrafine powder and the tourmaline powder ultrafine powder obtained in the step (S1) into the uniformly mixed suspension in the step (S3) to obtain the sludge dewatering agent.

Example one

2 parts of acidophilic bacteria, 2 parts of aspergillus tubingensis, 8 parts of bacteria secretion extracellular enzyme solution, 8 parts of lysozyme solution, 5 parts of polyacrylate, 5 parts of wood cellulose, 1 part of tourmaline powder, 15 parts of polyacrylamide solution, 10 parts of sludge stripping agent solution, 10 parts of sludge wall breaking agent solution and 10 parts of sludge surface structure modifier solution.

S1: weighing polyacrylate, tourmaline powder and wood cellulose in corresponding proportion, grinding into superfine powder, and screening with a 1500-mesh screen for later use;

s2: adding the polyacrylamide solution, the sludge remover solution, the sludge wall breaking agent solution and the sludge surface structure modifier solution in corresponding proportions into a reaction kettle, and stirring for 2-4 hours at the temperature of 30-40 ℃;

s3: dropwise adding the bacteria secretion extracellular enzyme solution and the lysozyme solution into the reaction kettle in the step S2, heating to 40-50 ℃, continuously stirring for 1-2 hours, and adding the acidophilic bacteria and the aspergillus tubingensis in corresponding proportions to obtain suspension containing the acidophilic bacteria and the aspergillus tubingensis;

s4: and (4) sequentially adding the polyacrylate ultrafine powder, the wood cellulose ultrafine powder and the tourmaline powder ultrafine powder obtained in the step (S1) into the uniformly mixed suspension in the step (S3) to obtain the sludge dewatering agent.

Example two

5 parts of acidophilic bacteria, 1 part of aspergillus tubingensis, 5 parts of bacteria secretion extracellular enzyme solution, 5 parts of lysozyme solution, 5 parts of polyacrylate, 10 parts of wood cellulose, 2 parts of tourmaline powder, 10 parts of polyacrylamide solution, 10 parts of sludge stripping agent solution, 10 parts of sludge wall breaking agent solution and 10 parts of sludge surface structure modifier solution.

S1: weighing polyacrylate, tourmaline powder and wood cellulose in corresponding proportion, grinding into superfine powder, and screening with a 1500-mesh screen for later use;

s2: adding the polyacrylamide solution, the sludge remover solution, the sludge wall breaking agent solution and the sludge surface structure modifier solution in corresponding proportions into a reaction kettle, and stirring for 2-4 hours at the temperature of 30-40 ℃;

s3: dropwise adding the bacteria secretion extracellular enzyme solution and the lysozyme solution into the reaction kettle in the step S2, heating to 40-50 ℃, continuously stirring for 1-2 hours, and adding the acidophilic bacteria and the aspergillus tubingensis in corresponding proportions to obtain suspension containing the acidophilic bacteria and the aspergillus tubingensis;

s4: and (4) sequentially adding the polyacrylate ultrafine powder, the wood cellulose ultrafine powder and the tourmaline powder ultrafine powder obtained in the step (S1) into the uniformly mixed suspension in the step (S3) to obtain the sludge dewatering agent.

EXAMPLE III

3 parts of acidophilic bacteria, 2 parts of aspergillus tubingensis, 8 parts of bacteria secretion extracellular enzyme solution, 5 parts of lysozyme solution, 5 parts of polyacrylate, 10 parts of wood cellulose, 3 parts of tourmaline powder, 15 parts of polyacrylamide solution, 8 parts of sludge stripping agent solution, 8 parts of sludge wall breaking agent solution and 3 parts of sludge surface structure modifier solution.

S1: weighing polyacrylate, tourmaline powder and wood cellulose in corresponding proportion, grinding into superfine powder, and screening with a 1500-mesh screen for later use;

s2: adding the polyacrylamide solution, the sludge remover solution, the sludge wall breaking agent solution and the sludge surface structure modifier solution in corresponding proportions into a reaction kettle, and stirring for 2-4 hours at the temperature of 30-40 ℃;

s3: dropwise adding the bacteria secretion extracellular enzyme solution and the lysozyme solution into the reaction kettle in the step S2, heating to 40-50 ℃, continuously stirring for 1-2 hours, and adding the acidophilic bacteria and the aspergillus tubingensis in corresponding proportions to obtain suspension containing the acidophilic bacteria and the aspergillus tubingensis;

s4: and (4) sequentially adding the polyacrylate ultrafine powder, the wood cellulose ultrafine powder and the tourmaline powder ultrafine powder obtained in the step (S1) into the uniformly mixed suspension in the step (S3) to obtain the sludge dewatering agent.

Example four

5 parts of acidophilic bacteria, 2 parts of aspergillus tubingensis, 8 parts of bacteria secretion extracellular enzyme solution, 8 parts of lysozyme solution, 5 parts of polyacrylate, 10 parts of wood cellulose, 3 parts of tourmaline powder, 10 parts of polyacrylamide solution, 9 parts of sludge stripping agent solution, 9 parts of sludge wall breaking agent solution and 9 parts of sludge surface structure modifier solution.

S1: weighing polyacrylate, tourmaline powder and wood cellulose in corresponding proportion, grinding into superfine powder, and screening with a 1500-mesh screen for later use;

s2: adding the polyacrylamide solution, the sludge remover solution, the sludge wall breaking agent solution and the sludge surface structure modifier solution in corresponding proportions into a reaction kettle, and stirring for 2-4 hours at the temperature of 30-40 ℃;

s3: dropwise adding the bacteria secretion extracellular enzyme solution and the lysozyme solution into the reaction kettle in the step S2, heating to 40-50 ℃, continuously stirring for 1-2 hours, and adding the acidophilic bacteria and the aspergillus tubingensis in corresponding proportions to obtain suspension containing the acidophilic bacteria and the aspergillus tubingensis;

s4: and (4) sequentially adding the polyacrylate ultrafine powder, the wood cellulose ultrafine powder and the tourmaline powder ultrafine powder obtained in the step (S1) into the uniformly mixed suspension in the step (S3) to obtain the sludge dewatering agent.

EXAMPLE five

5 parts of acidophilic bacteria, 1 part of aspergillus tubingensis, 3 parts of bacteria secretion extracellular enzyme solution, 8 parts of lysozyme solution, 5 parts of polyacrylate, 10 parts of wood cellulose, 3 parts of tourmaline powder, 15 parts of polyacrylamide solution, 10 parts of sludge stripping agent solution, 5 parts of sludge wall breaking agent solution and 5 parts of sludge surface structure modifier solution.

S1: weighing polyacrylate, tourmaline powder and wood cellulose in corresponding proportion, grinding into superfine powder, and screening with a 1500-mesh screen for later use;

s2: adding the polyacrylamide solution, the sludge remover solution, the sludge wall breaking agent solution and the sludge surface structure modifier solution in corresponding proportions into a reaction kettle, and stirring for 2-4 hours at the temperature of 30-40 ℃;

s3: dropwise adding the bacteria secretion extracellular enzyme solution and the lysozyme solution into the reaction kettle in the step S2, heating to 40-50 ℃, continuously stirring for 1-2 hours, and adding the acidophilic bacteria and the aspergillus tubingensis in corresponding proportions to obtain suspension containing the acidophilic bacteria and the aspergillus tubingensis;

s4: and (4) sequentially adding the polyacrylate ultrafine powder, the wood cellulose ultrafine powder and the tourmaline powder ultrafine powder obtained in the step (S1) into the uniformly mixed suspension in the step (S3) to obtain the sludge dewatering agent.

The method can thoroughly destroy the adsorption and wrapping effects of the sludge extracellular polymer on water under the combined action of acidophilic bacteria, aspergillus tubingensis, bacteria secretion extracellular enzyme and lysozyme by adding the acidophilic bacteria solution, the aspergillus tubingensis solution, the bacteria secretion extracellular enzyme solution and the lysozyme solution, so that the sludge is easier to dehydrate, and the biological cell wall structure in the sludge can be destroyed, so that the sludge floc structure is thoroughly disintegrated, the internal water of the sludge can be fully released, and the purpose of deep dehydration of the sludge is further achieved.

In addition, the water quality clarifying agent also comprises components such as polyacrylate, wood cellulose, tourmaline powder and a polyacrylamide solution, wherein the polyacrylate and the wood cellulose can be prepared from waste, the water absorbing effect can be improved, the polyacrylamide solution can improve the solubility of the polyacrylate and an acidophilic bacteria solution, an aspergillus tubingensis solution, a bacteria secretion extracellular enzyme solution and a lysozyme solution, so that the polyacrylate can better clarify water quality, and hydroxyl radicals generated by slight electrolysis of the tourmaline powder in sludge are combined with surrounding water molecules to form hydroxyl ions, so that harmful substances and carcinogens are eliminated.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (4)

1. The microbial sludge dehydrating agent is characterized by comprising an acidophilic bacteria solution, an aspergillus tubingensis solution, a bacteria secretion extracellular enzyme solution, a lysozyme solution, polyacrylate, wood cellulose, tourmaline powder, a polyacrylamide solution, a sludge stripping agent solution, a sludge wall breaking agent solution and a sludge surface structure modifier solution.

2. The microbial sludge dewatering agent of claim 1, wherein the sludge dewatering agent comprises the following components in weight percent: 2-5 parts of acidophilic bacteria, 1-2 parts of aspergillus tubingensis, 3-8 parts of bacteria secretion extracellular enzyme solution, 2-8 parts of lysozyme solution, 3-5 parts of polyacrylate, 5-10 parts of wood cellulose, 1-3 parts of tourmaline powder, 10-15 parts of polyacrylamide solution, 8-10 parts of sludge remover solution, 5-10 parts of sludge wall breaking agent solution and 3-10 parts of sludge surface structure modifier solution.

3. The microbial sludge dewatering agent of claim 1, which isCharacterized in that the concentration of the acidophilic bacteria solution and the concentration of the A.tubingensis solution are respectively 1.6 x 10⁸And 1.2 x 10⁸。

4. The microbial sludge dehydrating agent of claim 1, wherein the enzyme activity of the bacterial secretion extracellular enzyme solution and the enzyme activity of the lysozyme solution are 150-200U and 50-150U, respectively;

the preparation method of the microbial sludge dehydrating agent is characterized by comprising the following steps:

s1: weighing polyacrylate, tourmaline powder and wood cellulose in corresponding proportion, grinding into superfine powder, and screening with a 1500-mesh screen for later use;

s2: adding the polyacrylamide solution, the sludge remover solution, the sludge wall breaking agent solution and the sludge surface structure modifier solution in corresponding proportions into a reaction kettle, and stirring for 2-4 hours at the temperature of 30-40 ℃;

s3: dropwise adding the bacteria secretion extracellular enzyme solution and the lysozyme solution into the reaction kettle in the step S2, heating to 40-50 ℃, continuously stirring for 1-2 hours, and adding the acidophilic bacteria and the aspergillus tubingensis in corresponding proportions to obtain suspension containing the acidophilic bacteria and the aspergillus tubingensis;

s4: and (4) sequentially adding the polyacrylate ultrafine powder, the wood cellulose ultrafine powder and the tourmaline powder ultrafine powder obtained in the step (S1) into the uniformly mixed suspension in the step (S3) to obtain the sludge dewatering agent.